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GB50917-2013钢-混凝土组合桥梁设计规范.pdf

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'UDCᐳ᪗ GB50917-2013-Ueᔠ᫑᫡éCodefordesignofsteelandconcretecompositebridges2013-09-062014-05-01ᐳ#ᐳṓ!  ᐳ#᪗-ᔠ᫑᫡>CodefordesignofsteelandconcretecompositebridgeGB50917-2013: ᐳᢇ: ᐳ:20145ᨴ1ᑜ᱐"2013ᓅ#  ᐳ#᪗-éᔠ᫑᫡,ÜGB50917-2013☆ᑜ᱐"᱐ßᙬ:www.jhpress.comᙢᙬ:ᓅ)*+,ᩈ.ᙢᓅ/ᵬ1112ᜧ4C53689ṹ:100038ᵯ<:(010)63906433(B)?@Aᓅ)BᡠBᓅ)DFᓺdᨵ▲aᓺᑵ850mmX1168mm1/324ᓺM102ᓟO20142ᨴP1᱐20142ᨴP1Qᓺᑵ☆US@1:1580242•155VW:24.00ᐗ᱐ᩗᡠᨵftᩗrᩗîᵯ<:(010)63906404᝞ᨵᓺµä⚪,|"᱐¯ᣚ  ᐳabK144IDE"#ᐵOPQ!R᪗《-ᔠ᫑᫡>》Ḅ$cᢇ《-Ueᔠ᫑᫡é》d#᪗,1dGB50917—2013,f20145ᨴ1gh。ᐸ,P4.2_2ᩩdnᑴឋᩩᦻ,rstu᡻。|éᵫᡃ᪗VẆᡠᑜ᱐"᱐B。ᐳ2013?9ᨴ6D龙牛网www.longniu.com下载 ¡᪷w《ᐵZᓺB〈2007᪗éᑴ、ᑜ(PSᢇ)>ḄF》(᪗〔2007〕1251)Ḅ⌕,|éᵫ**Ẇ³▾xFᜧE¡xᨵᐵᓫѯ°Ẇ,±²³´h¸¬¹,¼ὃᨵᐵᑁ᜜ᐜ¥᪗,Íᙠ®ÎÒÓḄÔẠ,ᑴV|é。|éᐳᑖ8à4V▬B,⌕ᑁ]ᒹ3³ᑣ,ÂäM1,ᩞᧇ,Ô|éV,²Ah^᩽▲Y᝱c,Þᵨ᩽▲Y᝱¹c,ᢙuþ5,᪀⌼⌕æ。|éþÿO᪗Ḅᩩᦻdnᑴឋᩩᦻ,rstu᡻。|éᵫᳮ¤nᑴឋᩩᦻḄ,ᵫ**Ẇ³▾ᐹᢈÂᑁ]Ḅ。ᙠ᡻«,ôᨵÒÓ〈**Ẇ³▾(ᙢᙬ:*½ïî34471,89ṹ:200125),þóóÜy¼ὃ。|éᓫÑ、¼ᓫÑ、⌕g₝⌕Þ°:ᓫÑ:**Ẇ³▾xFᜧE¼ᓫÑ:ᜩ£**9Ẇ▾]@âaîºEẆ▾R▾¤Iᨵ▲-a]PaîPxẆ▾ᨵ▲a2ĤIᨵ▲a⌕g₝:ᕜ;iÓ▮ᐗ᧡⎅Ôᴉ}┱ÁᔧÖ³ᐗг"×ᐶØᓩó ᩋᔺ·7:B⃅Ï⊱óᩋ᳝ØÛ⊱ÜÝËᔡ¥Ënn°ᜩ₫ß᪝⌕Þ°:ªẠᒹᴂÔ)ᵨËádᕜἝᔺ¹7ááᕜzⅉâó龙牛网www.longniu.com下载 EQ³、!I........................................................................(1ÂäM1...................................................................(2.1............................................................................(2•2¢..........................................................................................(3ᩞᧇ.......................................................................(61é.....................................................................................(6.2ᩞ..........................................................................................(71.3£®¤................................................................................(101.4⚜bs¤................................................................................(11Ô|éV.....................................................................................(141¨qÜÝ.................................................................................(14,2¥7Qs᩽▲᝱,..........................................................(19,3¶·²ᵨ᩽▲᝱..........................................................(20:.4ᢝ§cn¨ᨚcbs.................................................(21t.5ª⌚¬Ý,............................................................................(22L.6®,.................................................................................(22²Ah^᩽▲Y᝱c..........................................................(23i.lᢙ°¥7s,.......................................................................(231.2ᢙ±¥7s,.......................................................................(28i.3᦮å¬Ý,............................................................................(29Þᵨ᩽▲Y᝱¹c..........................................................(31;.1¨qÜÝ................................................................................(31J.2bs................................................................................(325.3ᢰ................................................................................(36 6.4!¬Ý............................................................................(40)7ᢙuþ5....................................................................(44)7.1¨qÜÝ.................................................................................(44)7.2ᢙ±¥7s,#...................................................................(44)7.3ᢙ±³e{®,..............................................................(46)7.4é᫑☢´µᔣᢙ±,.................................................(46)7.5ᢙ±³e{Ḅᦪ,c.................................................(49)8᪀⌼⌕.......................................................................(52)8.1é᫑☢´............................................................................(52)8.2᫡..........................................................................................(54)8.3ᢙ±³e{............................................................................(54)8.4ᐸi᪀⌼⌕¸............................................................................(55)▬BAᔠ᫡Î4sḄឋÁErëc..................(56)▬BBÔZᨵᦔឋiäḄã₹A-.........................(58)▬BCÞ¦ᔣḄ᜜⚜L^ᔠ᫡ᢰcï-.......................................................................(61)▬BDÐlþ5ᢙuCcï-.........................(63)|éᵨ89ó...................................................................(65)Vᵨ᪗B.......................................................................(66)▬:ᩩᦻ9ó.......................................................................(67)龙牛网www.longniu.com下载 ContentsGeneralprovisions.....................................................................(lTermsandsymbols.....................................................................(22.1Terms.......................................................................................................(22.2Symbols..................................................................................................(3Materials.......................................................................................(63.1Concrete..................................................................................................(63.2Structuralsteel.......................................................................................(73.3Steelbar.................................................................................................(103.4Prestressingtendon............................................................................(11Basicrequirement.....................................................................(144.1Generalrequirement............................................................................(144.2Designofultimatelimitstates...........................................................(194.3Checkingofserviceabilitylimitstates...........................................(204.4Stresscheckingofpersistentsituationandtransientsituation.................................................................................................(214.5Checkingofoverturningstability......................................................(224.6Calculationoffatigue.............................................................................(22Designofultimatelimitstates..............................................(235.1Calculationofbendingresistance.......................................................(235.2Calculationofshearresistance...........................................................(285.3Checkingofoverallstability...........................................................(29Checkingofserviceabilitylimitstates................................(316.1Generalrequirement............................................................................(316.2Checkingofstress.................................................................................(32 6.3Checkingofdeflection..........................................................................(36)6.4Checkingoflocalstability...............................................................(40)7Shearconnectors........................................................................(44)7.1Generalrequirement..........................................................................(44)7.2Designvalueofshearresistance....................................................(44)7.3Calculationoffatigueofshearconnectors....................................(46)7.4Longitudinalshearresistanceofbridgedecks.........................(46)7.5Quantityandarrangementofshearconnectors.........................(49)8Detailingrequirements..........................................................(52)8.1Concretebridgedecks..........................................................................(52)8.2Steelbeams..........................................................................................(54)8.3Shearconnectors...............................................................................(54)8.4Otherdetailingrequirements..........................................................(55)AppendixACalculationofelasticcriticalmomentoflateralbucklingofcompositebeams............(56)AppendixBVirtualloadmethodbasedoneffectiveelasticmodulus.....................................................(58)AppendixCCalculationofdeflectionofexternallyprestressedcompositebeamswithoutdeviatorsatmidspan............................................(61)ApperdixDCalculationofshearstiffnessofperfobondconnectors...............................................................(63)Explanationofworkinginthiscode........................................(65)Listofquotedstandards...............................................................(66)Addition:Explanationofprovisions........................................(67)龙牛网www.longniu.com下载 1.0.1dÞ-Ueᔠ᫑᫡ḄMᔠDᐰG☠、〉ᵨὊ、ᢈÂᐜ¥、¬FᔠᳮḄ⌕,ᑴV|é。1.0.2|é〉ᵨZ⍝îᓫᜧZ120mḄ᫡Ó-Ueᔠ᫑᫡Ḅ。|é〉ᵨZÃᵨᱯïUeḄᔠ᫑᫡。1.0.3|éÃᵨþᭆ᳛ᳮÙdÔẠḄ᩽▲Y᝱ï-(ä)c◀᜜),ᢥᑖ⚗ÝᦪḄ⊤ëÓ¥。1.0.4-Ueᔠ᫑᫡◀LMᔠ|é᜜,VLMᔠ#cᨵᐵ᪗ḄéV。 2ÂäM12.1Âä2.1.1-Ueᔠ᫡steel-concretecompositebeamᵫUe᫑☢5᫡«ᢙuþ5ᔠ¨ᡂh᦮^Ḅ᫡。2.1.2ᢙuþ5shearconnectorᵨZþ᫡5Ue᫑☢Ͳὅ Ḅöu^,hÃᢙὅϤZ、Mᔣᑖ,ù²ὅᐳxḄ5。2.1.3ᨵᦔ{effectivewidthᙠ¥û☢n³Vcy,ᎷV5ᨵᦔḄhSᑖ{。2.1.4ᨵᦔឋiäeffectivemodulusofelasticityìUeUyUᓄVgḄL^-LU´ឋᐵÝæᦔd´ឋᐵÝḄæᦔឋiä。2.1.5ᩞᧇn᪗characteristicvalueofmaterialstrength´᪀ᡈ᪀5yÃᵨḄᩞᧇnḄÔ|¡⊤ 。2.1.6ᩞᧇndesignvalueofmaterialstrengthᩞᧇn᪗ ◀þᩞᧇnᑖ⚗ÝᦪÜḄ。2.1.7ᵨᦔLÔ|ᔠfundamentalcombinationforactioneffects²Ah^᩽▲Y᝱y,ᵨᦔL5GUᵨᦔLḄᔠ。2.1.8ᵨᦔL᪗ᔠstandardcombinationforactioneffects龙牛网www.longniu.com下载 ᵨ᪗ᦔL5GUᵨ᪗ᦔL、xGUᵨᔠ ᦔLḄᔠ。2.2M12.2.1ᩞᧇឋhEc——UeḄឋiä;SUeḄᨵᦔឋiä;EP——⚜L^Ḅឋiä;et-——ÚḄឋiä;Es-——ᩞḄឋiä;Gc-——UeḄuᑗiä;Gs-——ᩞḄuᑗiä;fck■sfcA——UeíDᢙn᪗、;/tk、/tdSUeíDᢙ¹n᪗、;fy-——ᩞ4cn;/d-Sᩞᢙ¹、ᢙᢙrn;/vd-——ᩞᢙun;/cedSᩞâ☢²n;ftA、fstdS᪝┑Ḅ4cnᢙ¹n;fsk、fsdSÚᢙ¹n᪗、;/pk、/PdS⚜L^ᢙ¹n᪗、;SÚ、⚜L^ᢙn。2.2.2ᵨ5ᵨᦔLMSrë;NsSc₹AÊᓫVᢙuþ5²Ḅu^Nl-Sᢙuþ5Ḅᢙu²A^;Fd-SËn᪝Ḅ⚜¹^;TPS⚜L^ᨵᦔ⚜¹^;v—Su^; 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3.1.5Ueᡈ¹yḄឋiäêLᢥ⊤3.1.5Ãᵨ。⊤3.1.5UeḄឋiä(MPa)UeC30C35C40C45C50C55C60næÍEc3.00X1043.15X1043.25X10*3.35X1043.45X1043.55X1043.60X104R:SÃᵨVÁᑺè´0Ṻ᳛Ḅ1〈UewåhÞᦪy,⊤C50〜C60ḄEc L¼þᢚ¦Ýᦪ0.95。3.1.6UeḄuᑗiäGᢥ|é⊤3.1.5ᦪḄ0.4ýÃᵨ,UeḄë&åwGÃᵨ0.2,UeḄ´Ýᦪ~GHd1X10_5/X:。3.2ᩞ3.2.1-Ueᔠ᫡Ḅ´᪀L᪷´᪀¤Ó、^ᱯ、þïÓèᡠᜐ᛻ᩩ5ᔠᳮ⌱ᵨᩞḄ1µäæÍ。3.2.2-Ueᔠ᫡ḄᩞGÃᵨQ235、Q345、Q390Q420,ᐸµäLᑖMᔠc#᪗《zO´᪀》GB/T700《Úᔠ:Ën´᪀》GB/T1591ḄéV。ᩞn Lᢥ⊤3.2.2Ãᵨ。⊤3.2.2ᩞḄn(MPa)ᩞᢙ¹、ᢙâ☢²ᢙuÑᡈᢙr(ᑬ⚔Ï)1fyA(mm)/dy*ced<16190110280Q23516〜4018010527040〜100170100255<16275160415Q34516—4027015540040〜63260150390 I⊤3.2.2ᩞᢙ¹、ᢙâ☢²ᢙuÑᡈᢙr(ᑬ⚔Ï)1/vd(mm)Ufetd63〜80250145375Q34580〜100245140365<1631018046516〜40295170445Q39040〜6328016042063〜100265150395<1633519550516〜40320185480Q42040〜6330517545563〜100290165430R:⊤ÑÝᢣcḄᩞÑ,¤íD¹íD᪀5Ýᢣû☢´Ñ5ḄÑ。3.2.3Þᵨ▲d100Ḅ-Ueᔠ᫡£Ãᵨ᫑᫡ᵨ´᪀,ᐸµäLMᔠc#᪗《᫑᫡ᵨ´᪀》GB/T714ḄéV。ᩞn Lᢥ⊤3.2.3Ãᵨ。⊤3.2.3ᩞḄn(MPa)ᩞᢙ¹、ᢙâ☢²ᢙuÑᡈᢙr(ᑬ⚔Ï)1/vd(mm)hfced<50185105275Q235q50〜100180100270<50275155410Q345q50〜100265150395龙牛网www.longniu.com下载 I⊤3.2.3ᩞᢙ¹、ᢙâ☢²ᢙuÑᡈᢙr(ᑬ⚔Ï)1/vd(mm)/ay"ced<50295170440Q370q50〜100285165425<50335190500Q420q50〜100325185485R:⊤ÑÝᢣcḄᩞÑ,¤íD¹íD᪀5Ýᢣû☢´Ñ5ḄÑ。3.2.4᫡èþ5ḄLMᔠÊᑡéV:1ÊÃᵨḄᩞᧇLMᔠc#᪗《zᩩ》GB5117ᡈ《Úᔠ:ᩩ》GB5118ḄéV。⌱ᵨḄᩩ1L5:ឋhÏ〉L。2fᡈXfÃᵨḄÄᑺ,L5:ឋhÏ〉L,ÍLMᔠ#cÏᐵ᪗ḄéV。3.2.5᫡èþ5ÞᵨḄËn᪝LMᔠÊᑡéV:1Ën᪝、、¿ᙌLMᔠc#᪗《´᪀ᵨËnᜧØᜮ᪝、ᜧØ、¿ᙌᢈÂᩩ5》GB/T1231ᡈ《´᪀ᵨuËn᪝þ》GB/T3632ḄéV。2Ën᪝Ḅ⚜¹^PdLᢥ⊤3.2.5Ãᵨ。30n᪝þḄᩞ᥅5☢ᢙZÝᦪ£Ãᵨ0.45。⊤3.2.5Ën᪝Ḅ⚜¹^{kN}íjéuM20M22M24M27M308.8S125150175230280ឋhæÍ10.9S1551902252903553.2.6᪀5Ḅ᪝┑LMᔠc#᪗《ᵯg.ᵨᙊ.ᜮ┑》GB/T10433ḄéV。᪝┑Ḅ^EឋhLMᔠ⊤3.2.6ḄéV。 ⊤3.2.6᪝┑Ḅ^Eឋh(MPa)14cnᢙ¹n/stdML15、ML15A1>320>4003.2.7ᩞḄᱥᳮឋhᢣ᪗Lᢥ⊤3.2.7Ãᵨ。⊤3.2.7ᩞḄᱥᳮឋhᢣ᪗ឋiäEsuᑗiäGs´Ýᦪ《sµäYë&åvs(MPa)(MPa)(þX:)(kg/m3)2.06XIO57.9XIO40.31.2X10-578503.3£®¤3.3.1Ueè⚜L^UeḄÚ£⌱ᵨHPB300、HRB400,HRB500,HRBF400,HRBF500RRB400,ÍLMᔠc#᪗《UeᵨP1ᑖ:Ùᐝᙊ》GB1499.1ᡈ《UeᵨP2ᑖ:Ù|î》GB1499.2ḄéV。3.3.2ÚḄᢙ¹n᪗ LᐹᨵðZ95%Ḅù²᳛。ÚḄᢙ¹n᪗/skLᢥ⊤3.3.2Ãᵨ。⊤3.3.2Úᢙ¹n᪗ïM1ai/sk(MPa)HPB3006〜50300HRB400ftHRBF400sF6—50400sRRRB400HRB500ï6〜50500HRBF500gF3.3.3ÚḄᢙ¹n/sdᢙn/^Lᢥ⊤3.3.3Ãᵨ。•10•龙牛网www.longniu.com下载 ⊤3.3.3Úᢙ¹、ᢙn(MPa)ï/sd/sdHPB300250250HRB400HRBF400330330RRB400HRB500415415HRBF500R:1UeíD¹ðwD¹᪀5Ḅᢙ¹nᜧZ330MPay,Lᢥ330MPaHᵨ;ᙠ2û☢ᢙu²A^、²A^¹ᑗ²A^cᚖZ¶ᔣ^Ḅðᡈæ¿ᔣḄᢙ¹nᜧZ330MPay,Lᢥ330MPaHᵨ。2᪀5OᨵxïḄy,ïLÃᵨᔜfḄn。3.3.4ÚḄឋiäÏLᢥ⊤3.3.4Ãᵨ。⊤3.3.4ÚḄឋiä(MPa)ïetHPB3002.1X105HRB400、HRB500、HRBF400、HRBF500、RRB4002.OX10s3.4⚜L^3.4.1⚜L^-Ueᔠ᫡Ḅ⚜L^L⌱ᵨ¨´、Ä,、ð᪀5ᡈ¿ᔣ⚜L^aG⌱ᵨ{j。¨´LÒÓc#᪗《⚜L^Ueᵨ¨´》GB/T5224Ḅ⌕,ÄLÒÓc#᪗《⚜L^UeᵨÄ》GB/T5223Ḅ⌕,{jLÒÓc#᪗《⚜L^Ueᵨj》GB/T20065Ḅ⌕。å7´¨´LÒÓc᪗《å7´⚜L^¨´》JG161Ḅ⌕,ᡂì5ᡂì᜜®ḄùNLÒÓÏᐵéḄ•11• ⌕。3.4.2⚜L^Ḅᢙ¹n᪗ LᐹᨵðZ95%Ḅù²᳛。⚜L^Ḅᢙ¹n᪗/PkLᢥ⊤3.4.2Ãᵨ。⊤3.4.2⚜L^ᢙ¹n᪗(MPa)ïM1aid(mm)/pk1X28.0,10.01470、1570、1720、1860、1960()12.01470、1570、1720、18601X3¨´8.6,10.8,12.91470、1570、1720、1860、1960(°)1X79.5,12.7.15.21860,1960(F)17.81720,186051570、1770、1860ᐝ☢P71570`◀91470,1570L^51570、1770、1860ÄîH7157091470.157018、25、32540、785、930、1080{≮jT40、50540、7853.4.3ᑁᨵ7´⚜L^Ḅᢙ¹nòᢙn/kLᢥ⊤3.4.3Ãᵨ。⊤3.4.3⚜L^ᢙ¹、ᢙn(MPa)ï/pk/pd14701000¨´157010701X2()172011703901X3(°)1X7(F)1860126019601330•12• I⊤3.4.3ï/pk/pd/pa1470100015701070`◀L^Ä4101720120018601260540450785650{j40093077010808903.4.4᜜å7´⚜L^Ḅ᩽▲L^crpu,dLÃᵨ⚜L^Ḅ᩽▲L^CTpu◀þὃ⇋ᩞᧇឋh、´᪀ÝæCOḄᑖ⚗ÝᦪyPU,yPUGH1.2。3.4.5⚜L^Ḅឋiä?Lᢥ⊤3.4.5Ãᵨ。⊤3.4.S⚜L^Ḅឋiä(MPa)ïEP¨´1.95X105`◀L^Ä2.05X105{j2.00X10513• 4H04.1S1éV4.1.1-Ueᔠ᫑᫡L¤ᐸ᪀5èþ5¥Êᑡ¹c:1ᢥ²Ah^᩽▲Y᝱Ḅ⌕¥ᢝYýèᏔᯠYýḄ²A^、᦮³Vc。2ᢥÞᵨ᩽▲Y᝱Ḅ⌕¥ᢝYýḄᢙ÷ឋ、L^、ᢰ、³V¹c.,þèὊឋ。3ᢥᨚYý´᪀^Y᝱Ḅ⌕¥æýḄ¹c。4.1.2-Ueᔠ᫑᫡ḄÔLd100。4.1.3-Ueᔠ᫑᫡ḄÞᵨ▲Lᢥ⊤4.1.3Ãᵨ。⊤4.1.3-éᔠ᫑᫡Ḅ,²ᵨ?▲Þᵨ▲()᫑᫡130ð᫑250᫑、S⌕ð᫑3100ᱯᜧ᫑、ᜧ᫑、S⌕᫑R:¤ᨵᱯ⌕´᪀ḄÞᵨ▲,GᙠBéVÔẠ¬ᢈ¬FÙ²Übþ¯᦮。4.1.4-Ueᔠ᫡Ḅ᫡GÃᵨO¤ᡈ9¤æû☢¤Ó,Ue᫑☢GÃᵨc5ᡈ⚜ᑴ,þ5GÃᵨ᪝┑、Ðlᡈ9æ¤Ó。•14• 4.1.5-Ueᔠ᫡᫑☢Ḅᨵᦔ{6。LMᔠÊᑡéV:1ᔠ᫡ᔜè?5ᜐḄUe᫑☢ᨵᦔ{(«4.1.5)LᢥÊᑡaÓc,wLᜧZUe᫑☢h▭{:6C=60+IX(4.1.5-1)6ci=Lc,:/6<6,(4.1.5-2)Ó4。——᫡ῳïᨬ᜜Îu^þ5D¸(mm);bci—᫡ῳSÎḄUe᫑☢ᨵᦔ{(mm)。ᐸb,dᨬ᜜Îu^5DàÏe᫡ῳïḄᨬ᜜Îu^5D¸ḄSXᡈᨬ᜜Îu^5DàUe᫑☢fᵫÅḄ¸;LCtl——æᦔ(mm),¹?᫡LHc,þI᫡Lᢥ«4.1.5(a)⌱H。2¹?᫡?þI᫡Å?ᜐḄUe᫑☢ᨵᦔ{6。LᢥÊᑡaÓc:6c=6o+SA6cl(4.1.5-3)»=0.55+0.025LCll/6l4.2.1-Ueᔠ᫑᫡ḄDᐰæÍL᪷´᪀ḄS⌕ឋ、´᪀ẚGhXÜ»ḄtSឋᢥ⊤4.2.1Ãᵨ。⊤4.2.1-éᔠ᫑᫡,gᐰZÍDᐰæÍ´᪀᫑᫡—ÍS⌕´᪀ᱯᜧ᫑、ᜧ᫑、᫑、S⌕ð᫑ÍS1´᪀ð᫑R⊤ᡠᑡᜧ、、ð᫑Ýᢥc᪗《aî᫑Ëᵨé》JTGD60ḄᓫlV,¤ZLæ᫑᫡,þᐸᨬᜧd;|⊤sþ“S⌕”Ḅ᫑ð᫑,Ýᢣ0laîSÍaî、■aî、*ºlî、õî]ᱯùÿḄ*QõîḄ᫑᫡。2¤ᨵᱯ⌕Ḅ᫑᫡,ᐸDᐰæÍG᪷ᐹüýkV。4.2.2-Ueᔠ᫡Ḅ²Ah^᩽▲Y᝱cLÃᵨÊÓ:y0Snd4.5.1-Ueᔠ᫡C⌚³VcLÃᵨÊÓ:7qfSsk0.5y:h0^376ty,13fl—IV:VffyS£T<0.5y:Ao.^34/345~77^TvXR:⊤ad᫡ËḄå·Ýᦪ,GêÃᵨÊᑡᔜÓc:rëᵨ,6,ᛛឋíᙠ᫡û☢ᑁy:^■sfd~t~ApgpU,d—A.cfc&—^ifadAs—Age—A,ta—~hJ7~rëᵨ,6:»_Aafd~l~Ar/~sjAsc2fd—24 _^sc—-^sbA。ty,Ó:Ast、Asb—ᑖd᫡è、Êè☢ciAs-᫡,Ḅû☢☢c。5.1.2ᛛឋï-c-Ueᔠ᫡ny,ᙠÊᑡÑGèrë5u^ḄÏîx8:1rëᵨḄᔠ᫡û☢;2rëᵨwArt/yðZ0.15As/dḄᔠ᫡û☢(Artdrë,Ue᫑☢ᨵᦔ{kᑁ¶ᔣḄû☢☢c)。5.1.3ᛛឋï-crë,-Ueᔠ᫡Ḅᢙr²A^y,LMᔠÊᑡéV:1ᛛឋíᙠ᫡û☢ᑁ(«5.1.3-1),ᓽ/^+ᜎ;As/a+Aptv,##,ᢙr²A^LMᔠÊᑡaÓ⌕:ᛛឋí(«)/d᜜⚜L^^p^pi^dd5.1.3-1ᛛឋÐᙠ᫡ᑁ^Ḅᔠ᫡Ò☢nbsd¦Acl—Ue᫑☢ḄÑ;Ae2—Ue᫑☢Ḅ²ᡲ0y0M^k(Ac/cd3»i-~Ascfdy2-~Ap(rpu,dy3+Ar/sd3/4)(5.1.3-1)■^sfd•^■p^pufd-^-cfcdfsdAs(5.1.3-2)27dk=—0.048e_0-43r(5.1.3-3)r=______nrNcv______(5.1.3-4)min(Ac/cd,As/d)•25• Ó:y。——᫑᫡´᪀ḄS⌕ឋÝᦪ,ᢥ|éP4.2.1ᩩḄéVÃᵨ;M——rë(N•mm);k——ὃ⇋ZᦔLḄᔠÝᦪ,GHd0.96,aGÃᵨÓ(5.1.3-3)¥A5c;Ac——Ue᫑☢Ḅû☢☢c(mm2);Asc——᫡,Ḅû☢☢c(mm2);Ap——᜜⚜L^Ḅû☢☢c(mm2);Ar—ᛛឋíÎUe᫑☢ᑁ¶ᔣḄû☢☢c(mm2);As——᫡Ḅû☢☢c(mm2);3^1—Ue᫑☢,û☢¤Dà᫡¹,û☢¤DḄ¸(mm);—᫡,û☢¤Dà᫡¹,û☢¤DḄ¸(mm);%—᜜⚜L^Ḅû☢¤Dà᫡¹,û☢¤DḄ¸(mm);3;4—Ue᫑☢ᑁ¶ᔣḄû☢¤Dà᫡¹,û☢¤DḄ¸(mm);ffpu,d——᜜⚜L^Ḅ᩽▲L^(MPa),ᢥ|éP5.1.4ᩩc;/cd——UeḄᢙn(MPa);/c——ᩞḄᢙ¹n(MPa);/sd——Ue᫑☢ᑁ¶ᔣḄᢙ¹n(MPa);’——u^þ;nr-----Vu,Ḅᢙuþ5ᦪE,u,ḄVÓ|éP7.5.2ᩩ;NI-----Vᢙuþ5Ḅᢙu²A^(MPa),ᢥ|éP7.2⁚ḄᨵᐵaÓc。•26 2ᛛឋíᙠUe᫑☢ᑁ(«5.1.3-2),ᓽ/^ᓝAr/Sd>y,ᢙr²A^LMᔠÊᑡaÓ⌕:y0M^k(Acc/cd^i+2bh/b<2cI¤û☢h/b>2dᐸû☢—d•30• 6¶·²ᵨ᩽▲᝱6.1S1éV6.1.1-Ueᔠ᫡L᪷Þᵨ᩽▲Y᝱⌕¥ᨚYýᢝYýḄc。6.1.2ᢥᢝYýy,L¤-Ueᔠ᫡Ḅû☢L^、ᢙ÷ឋ、÷Ö{ᢰ¥c;ᢥᨚYýy,L¤-Ueᔠ᫡Ḅû☢L^¥c。ᔜ⚗c LÒÓ|ééVḄÏL▲。6.1.3-Ueᔠ᫡ឋ▤6cGÃᵨÊᑡÔ|ᎷV:15UeᩞᧇᙳdᳮÆḄ´ឋ;2ᔠ᫡rsy,Ue᫑☢û☢5᫡û☢ᔜfMᔠû☢ᎷV,ᩞᧇc~×VÕ。6.1.4ឋ▤6cG᪷5Ueឋiäå71。¥û☢ᣚc,ìUe᫑☢ᣚcᡂû☢Üᢥᩞᧇ^EaÓcL^,ᣚcPÜUe᫑☢SDËLùᢝU。ᙠZ₹AᵨÊ,UeUḄx8¥û☢ᣚcy,ឋiäåGᵨᨵᦔឋiäåA¡a。5Ueឋiäån。ᨵᦔឋiäå&ḄVLMᔠ|éP6.2.3ᩩḄéV。6.1.5c_Ueᔠ᫡ḄᢰL^yLz·Ḅx8,ÍLᐭUeU、ᦈþèÂæᵨḄᦔL。6.1.6c-UeþIᔠ᫡Ḅᢰy,ᙠrë,,Gᢥᨵᦔ{ᑁḄᐰû☢c;ᙠrë,,G᪷UeḄÐ÷üýᐭUe᫑☢Ḅx8。6.1.7þI᫡?UeḄ÷Ö{Gᢥc᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ḄíD•31• ¹᪀5¥¹c。6.2L^¹c6.2.1-Ueᔠ᫡r᪀5ᙠrëè⚜L^ᵨÊXḄUe᫑☢è᫡-ᔣL^GᢥÊᑡaÓc:Ue᫑☢⚔L^:(6.2.1-1)72。JoWoio᫡ÊèL^:(6.2.1-2)io-/ioioÓ-Ue᫑☢⚔L^(MPa);-û☢rë(N•mm);n0---ᩞឋiä5UeឋiäḄå,W()=f:s/£:cJo——Ue᫑☢5᫡ᔠû☢Ḅᣚcឋë(mm4);3/c——Ue᫑☢⚔àᔠ᫡ឋíḄ¸(mm);txe——᜜⚜L^ḄឋL^(MPa),Gᢥ|éP6.2.2ᩩc;Ap——᜜⚜L^Ḅû☢☢c(mm2);A0——Ue᫑☢5᫡ᔠû☢Ḅᣚc☢c(mm2);e——⚜L^¤DÑàᣚcû☢ឋíḄwD¸(ᔣÊd)(mm);cts——᫡ÊèL^(MPa);%——᫡Êèàᔠ᫡ឋíḄ¸(mm)。2᜜⚜L^ḄឋL^GᢥÊᑡaÓc:+〒)、=J]g"o+ei0ea+et_(6.2.2-3)13^=PLM°edxJo_r»/2M?0«,o+2M?!e,i+M?iei0+M?o^-i=Phli6(6.2.2-4)Ó:~——᜜⚜L^ḄᨵᦔL^(MPa);——᜜⚜L^ḄឋL^âä(MPa),ᙠ◤⌕ᐭḄüýÊ,GᢥÓ(6.2.2-2)¥c;L——ᔠ᫡c(mm);li——Pt•6⚜L^ᙠᙶ᪗ÝḄᢗxZ(mm),Ó«6.2.2(a);^——â7)ᜐᡈPiV¦ᔣᜐ⚜L^¤DÑàᣚcû☢ឋíḄwD¸(mm);6,0——Pi6⚜L^Ḅgᑮᣚcû☢ឋíḄ¸(mm),Ó«6.2.2(b);^•1——Pi6⚜L^Ḅìᑮᣚcû☢ឋíḄ¸(mm),Ó«6.2.2(b);M0——ᓫÑ₹AÊḄrë(N•mm/N);M?o——ᓫÑ₹AÊᙠPi6⚜L^ḄgᜐḄrë(N•mm/N),Ó«6.2.2(c);M?i——ᓫÑ₹AÊᙠPi6⚜L^ḄìᜐḄrë(N•mm/N),Ó«6.2.2(c);——c«¹ᑏM1(mm3);$2——c«¹ᑏM1(N•mm3)。•33• (a)#᜜⚜L^[«(b)e«(ᔣÊd)(c)M0«d6.2.2⚜bs¤Öឋbs×,áᦪ,üÏ6.2.3-Ueᔠ᫡û☢¹cy,Lᐭ᫡5Ue᫑☢´ᔠÜUeUḄx8,cGÃᵨUeᨵᦔឋiä-ᢥÊᑡaÓc:UeḄᨵᦔឋiä:^=1+0。)(6.U-1)5UeḄᨵᦔឋiäåi”l=wo[1+0l#O")](6.2.3-2)n0=-pr(6.2.3-3)Ó:E。—UeḄឋiä(MPa),ᢥ|é⊤3.1.5Ãᵨ;0L——᪷₹AVḄUC,ᵨH1.,ᵨZ¯᦮ᑁ^Ḅn%ÑᵨH1.5,UeᦈᵨH0.55;•34• 2)——ãAÁd6,cὃ⇋ÁdtḄUeUÝᦪ,GHdUÝᦪᨬì,᪷Ue᫑☢ḄãAÁᳮÙÑᢥ⊤6.2.3Ãᵨ;n0——₹AᵨÊ5UeḄឋiäå;Es—ᩞḄឋiä(MPa),ᢥ|é⊤3.2.7Ãᵨ。⊤6.2.3éØÙáᦪ4>(t,t0)ᳮÙA0%13y,ὃ⇋×┑ᦔL,H1.0。7.2.2Ðlþ5Ḅᓫlᢙu²A^ L᪷ÊÓV:Ncv=2a(^?-y^)/td+2•fdl•/vd(7.2.2)Ó:Ne——Ðlþ5Ḅᓫlᢙu²A^(N);dx——Ðl(mm);d2——¿ᔣÓ(mm);/td——UeíDᢙ¹n(MPa);/vd——ᢙun(MPa),ᢥÓ/vd=0.577/sdc,/sdSᢙ¹n(MPa);a---0ËÝᦪ,H6.1。7.2.39þ5Ḅᢙu²A^ L᪷ÊÓV:•45 Nv=0.260+0.5iw)/VEc/cd(7.2.3)Ó:—9þ5Ḅᢙu²A^(N);t—9èḄᙳÑ(mm);K---9ῳḄÑ(mm);---9ḄZ(mm)。þ95᫡ḄØÖLᢥ²½þ5Ḅᢙu²A^Ne¥c。7.3ᢙ±³e{®,7.3.1ᢙuþ5L᪷ÊᑡaÓ¥ä)¹c:7FfANp0.(7.4.2)Ó:——ᓫÑZUe᫑☢ᑁ¿ᔣ³☢c(mm2/mm),ᢥ«7.4.1⊤7.4.2H;0.8——Ýᦪ(N/mm2);Ls——¶ᔣuE☢ḄZ,ᢥ«7.4.1ᡠḄa—a、b_b、c—cèþ´ᙠᢙuþ5þ᜜ḄᨬZH(mm);/sd—¿ᔣḄᢙ¹n(MPa)。⊤7.4.2ᓫÑZ¿ᔣḄû☢c6uᑗ☢a—ab—bc—cd—dAeAb+At2Ab2(Ab+Abh)2Abh7.4.3²᫑☢´ᔠ☢¶ᔣu^Ḅ¿ᔣᙠuᑗ☢᜜ḄZLÒÓ7)ZḄ⌕;±¿ᔣ¸LᜧZþ5Ô¿ᔣËḄ4ý,wLᜧZ600mm。7.4.4-Ueᔠ᫡²ᡲèUe᫑☢¶ᔣE☢u²A•47• ^cLMᔠÊÓ⌕:Vid^ViRd(7.4.4)Ó:Vld——¤ᡂᔠᵨþÜ,ᓫÑ᫡ZᑁUe᫑☢ᔜ¶ᔣuE☢Ḅ¶ᔣu^(N/mm);V1Rd—ᓫÑ᫡Zᑁᔜ¶ᔣuE☢u²A^(N/mm)07.4.5¤ᡂᔠᵨ Ü,ᓫÑ᫡ZᑁUe᫑☢ᔜ¶ᔣuE☢Ḅ¶ᔣu^VldLMᔠÊᑡéV:1ᓫÑ᫡Zᑁa—a¶ᔣuE☢Ḅc¶ᔣu^:Vld=max|y17,1^7(7.4.5-1)2ᓫÑ᫡Zᑁb—b、c-cèd-d¶ᔣuE☢Ḅc¶ᔣu^:Vld=Vi(7.4.5-2)Ó:bc——Ue᫑☢Ḅᨵᦔ{(mm);b,、b2—Ue᫑☢ÍÎᙠa-aE☢þ᜜Ḅᨵᦔ{(mm),Ó«7.4.1;Vi——¤ᡂᔠᵨ Ü,ᓫÑ᫡ZḄ᫡5Ue᫑☢ḄE☢¶ᔣu^(N/mm)。3ᓫÑ᫡ZḄE☢¶ᔣu^LᢥÊᑡ⌕¥c:1)ᵫMᔣu^VgḄᓫÑ᫡ZḄE☢¶ᔣu^:Vi=V^Soc(7.4.5-3)Jo2)ᵫ⚜L^ü¤7)^、UeᦈU¤ᡈÂÙVgḄ¶ᔣu^:⚜L^üᙠ᫡7),7)PÜᙳò⌴¶ᔣu^:V^X1(7.4.5-4)^cs⚜L^üᙠ᫡7),7)P(⚜L^ᵨ,6)ò⌴u^ᡈ᫡â7):•48 Vi=j1(7.4.5-5)^csÓ——¤ᡂᔠᵨ Ü,ᵨZᔠ᫡ḄMᔣu^(N);Vt——ᵫ⚜L^ü¤7)^、UeᦈU¤ᡈÂÙḄ¸ᦔLᙠUe᫑☢XḄ¶ᔣu^(N);S0c——Ue᫑☢¤ᔠû☢íḄ☢cë(mm3);Io——ᔠ᫡û☢ᣚcû☢ឋë(mm4);/cs—UeᦈU¤ᡈÂÙVgḄ¶ᔣu^cò⌴Z(mm),H᫡¸᫡ZḄ1/10Ḅ´ð 。7.4.6ᓫÑZᑁ¶ᔣE☢u²A^ LᢥÊᑡaÓc,ÍLHÍὅḄ´ð :V1Rd==0.7Ls/td+0.8Ae/sd(7.4.6-1)Vmd=0.2bLsfcd(7.4.6-2)Ó:V1Rd——ᓫÑZᑁ¶ᔣE☢u²A^(N/mm);Ls——¶ᔣuE☢ḄZ,ᢥ«7.4.1ᡠḄa—a、b—b、c—c^d—dþ´ᙠᢙuþ5þ᜜ḄᨬZH(mm);/td——UeíDᢙ¹n,ᢥ|é⊤3.1.4H(MPa);/sd——¿ᔣḄᢙ¹n(MPa);/cd——UeíDᢙn,ᢥ|é⊤3.1.4H(MPa)。7.5ᢙuþ5Ḅᦪäc5[7.5.1Vu,6ᑁᢙuþ5ḄᦪELÒÓÊÓ⌕:n^VjNl(7.5.1)Ó—Vu,6ᑁ᫡5Ue᫑☢]E☢Ḅ¶ᔣu^(N);•49 Nl——ᓫVþ5Ḅᢙu²A^(N)。7.5.2u,ḄᑜᑖLþrë&¤ᨬᜧèærëdE▲⌲6¥(«7.5.2)。d7.5.2³å᫡±ÂÒᑜᑖd7.5.3Vu,6ᑁ᫡5Ue᫑☢]E☢Ḅ¶ᔣu^VsLᢥÊᑡï-V:1ÑZrë,6Ḅu:Vs=min{As/d,Ac/cd}(7.5.3-1)Ó:AS——᫡Ḅû☢☢c(mm2);fA—ᩞḄᢙ¹n(MPa);Ac——Ue᫑☢Ḅû☢☢c(mm2);/cd—UeíDᢙn(MPa)。2ÑZrë,6Ḅu:Vs=Art/sd(7.5.3-2)Ó:Art—rë,Ue᫑☢ᨵᦔ{kᑁḄ¶ᔣû☢☢c(mm2);/sd—ᢙ¹n(MPa)。3SÃᵨ᪝┑9ᢙu5y,Gìu,m2m3、m4m5ᑖᔠÍdSV,Oᢙuþ5(«7.5.2),ᔠÍdSV,6ÜḄ¶ᔣu^LMᔠÊᑡéV:VS=AC/Cd+Art/Sd(7.5.3-3)7.5.4ÑZrë,6Ḅᢙuþ5,ᐸᢙu²A^i^vL¼þᢚ¦Ýᦪ0.9(?5ÍÎ)ᡈ0.8(ᑖ)。•50• 7.5.5ᢙuþ5Gᙠ¤LḄu,6ᑁᙳᒴ[。SᙠDu,6ᑁᨵ´ᜧ¤₹Aᵨy,Lìþ5Vᦪ~ᢥu^«☢cå·ᑖOÜuᔜfᙳᒴ[。7.5.6ᢙuþ5ᙠ´ᔠ☢âḄ[,LᵫZ⚜L^ü¤7)^、UeᦈU¤ÂÙVgḄ¶ᔣu^Ḅã。ᓫÑ᫡ZḄE☢¶ᔣu^Lᢥ|éP7.4.5ᩩḄéVc。•51 8᪀⌼⌕8.1é᫑☢´8.1.1Ue᫑☢Ñ£ðZ180mm,᪷◤⌕G²ᡲ。Sᨵ²ᡲy,LMᔠÊᑡéV(«8.1.1):1²ᡲËh£ᜧZUe᫑☢Ñ/^Ḅ1.5ý。2²ᡲ⚔Ḅ{6。£ðZ᫡è{6t51.5ý²ᡲËL。3²ᡲÅàᢙuþ5᜜ÎḄ¸ðZ40mm。4²ᡲ᜜¤¨9Lᙠᵫþ5᪷gḄ45°Ø´ḄE▲þ᜜。5²ᡲ¿ᔣḄÊö6Lᙠ¸᫡è50mmḄk ᑁ;ᢙuþ5ᢙᣬgâ±☢Ë¿ᔣḄ¸&ðZ30mm;¿ᔣ¸LᜧZ4/ie,wLᜧZ600mmod8.1.1ᔠ᫡ḄÒ☢¦ñ8.1.2-Ueᔠ᫡Å᫡Ue᫑☢Ḅ᪀⌼LMᔠÊᑡéV(«8.1.2):1ᨵ²ᡲy,¸Z£ðZD。•52• ^hC2«8.1.2Å᫡᪀⌼«2å²ᡲy,LxyÒÓ¸᫡D´ðZ150mm、¸᫡èÅðZ50mmḄ⌕。8.1.3rë,Ue᫑☢¹û☢O᳛LðZ1.5%。Ê6û☢c£ðZû☢³û☢cḄ50%。8.1.4ᔠ᫡Ḅ᫡âèþIᔠ᫡?▬ê᫑☢ᑁ,£ᢥÊᑡ⌕²³UeᦈÂÙL^Ḅ2ᔣᑖ[(«8.1.4):h´[ᙠ᫑☢ឋíïÎ᫑☢Ḅ¸ïᔣᦈ,ã´[ᙠ#☢ឋíÊïΫ8.1.42ᔣᑖ[[«1k£dῳ¸Ḅ50%〜100%。2ḄZ£êḄᐰ{,£ðZ16mm,¸£ᜧZ150mm。3£[ᙠ᫑☢Ḅû☢ឋí▬ê。4ḄïᔣL5Ḅ¸ïᔣS。•53• 8.2᫡8.2.1᫡ḄèÑLðZ16mm,ῳÑLðZ12mm,ᡠᵨÑLðZ4mm。8.2.25Ue´ᔠḄ᫡è{ðZ250mm,ÍLᜧZᐸÑḄ24ý。è5ῳḄ£ÃᵨᰚÄTOØÖ。8.2.3ᙠ᫡ḄÍâL[¿◞ᡈ¿ᥛµ,ᐸ¿◞ᡈ¿ᥛµḄ[Ñ£᪷^ᑖ᪆V。8.3ᢙ±³e{8.3.1ᢙuþ5ḄLMᔠÊᑡéV:1᪝┑þ5┑ᜮÊ⊤☢ᡈ9þ5èÊ⊤☢Ë᫑☢±⚔☢£ðZ30mm。2þ5Æ᫡ïᔣḄᨬᜧ¸£ᜧZUe᫑☢(ᒹ3²ᡲ)ÑḄ4ý,wLᜧZ400mm。3þ5Ḅ᜜ÎÅ5᫡èÅ Ḅ¸LðZ30mmo4þ5Ḅ᜜ÎÅàUe᫑☢ÅḄ¸LðZ100mm。5þ5⚔☢ḄUeùN6ÑLðZ15mm。8.3.2᪝┑þ5◀LÒÓ|éP8.3.1ᩩḄ⌕᜜,VLMᔠÊᑡéV:1S᪝┑Ѥ᫡ῳy,᝞᫡è²¹^,ᑣ᪝ᩚᩚLᜧZ᫡èÑḄ1.5ý;᝞᫡è²¹^,ᑣ᪝┑ᩚLᜧZ᫡èÑḄ2.5ý。2᪝┑ZLðZᐸᩚḄ4ý,Í£Ô«ᐸᩚḄ6ý。3᪝┑Æ᫡í´ïᔣḄ¸LðZᩚḄ6ý;ᚖZ᫡í´ïᔣḄ¸LðZᩚḄ4ý;S᪝┑¸´ðy,Lᐭ•54• ×┑ᦔL。8.3.3Ðlþ5◀LMᔠ|éP8.3.1ᩩḄ⌕᜜,VLMᔠÊᑡéV:1Ðl¸LᜧZ2.25ýÐl。2Ðl¸ᜧZ1..25ýÐlËy,Ðlþ5Ḅᢙu²A^Gᢥh▭Ðlᦪä¼þᓫl²A^。3¿ᔣÓLᜧZÐlḄ1/2。4Ðl5᫡ ḄLÃᵨ"☢ØÖ。8.3.49þ5GÃᵨQ235,û☢£ᜧZ[12.6。8.4ᐸi᪀⌼⌕¸8.4.1-Ueᔠ᫑᫡L᪷´᪀Ḅᱯ,´ᔠ᫑ᙬᜐḄ᛻ᩩ5,~´᪀᦮ḄὊឋ?¥᪀⌼。8.4.2᫡´ᔠ☢ᙠ5/(ᡈD)Ue᫑☢PLñ◀R┤、p、y6、c:、deᐸᩖᱥ。8.4.3᫡´ᔠ☢Å30mmkᑁL¥■ῖæ。8.4.4S᫑☢Ãᵨ⚜ᑴUe᫑☢y,LÃHÞ⚜ᑴ5᫡Y,ÒÓ■ö⌕。55• ▬hAᔠ᫡ ¡¢Ḅ£ឋ¤¥¦§>A.0.1ᔠ᫡Î4sḄឋÁErë£Ãᵨᦪ ᑖ᪆ï-c。A.0.2ᔠ᫡Î4sḄឋÁErëGÃᵨឋèüᩚi(«A.0.2),ᢥÊᑡaÓ¹ᓄc:M,A.0.2-1)Asb+Asw/2_7Z2EsIahyNcA.0.2-2)niA.0.2-3)KVn4EkJA(m+1)2=A.0.2-4);4ESlshy3ESL2-5)1X4A.0.2-6)12^sb^sbLby=A.0.2-7)12"Ó:M„-ᔠ᫡Î4sḄឋÁErë(N•mm)Na-æᦔឋèüᩚḄÁE^(N);W0a-ὃ⇋Ð÷UeḄû☢iä(mm3);•^•sb、•^•w-ÊèῳḄ☢c(mm2);Eaᩞឋiä(MPa)Isby"æᦔឋèüᩚᐵZíḄឋë(mm4)ឋèüᩚḄcZ(mm);ឋèüᩚḄZ(mm);•56• m—c«åääᦪ;ks—ᓫÑ᫡ZḄ¦èüC(N/mm2);——ᓫÑ{ῳ☢Ḅû☢ឋë(mm)K——᫡èu^DḄ¸(mm)K——᫡ῳÑ(mm);bsh,tsh——᫡ÊèḄ{Ñ(mm)。(a)æç°èᵨḄᔠ᫡(b)Öឋéᔣê(c),üñ¨A.0.2£ឋ©ª«ᩚx ▬ìB"ᨵᦔÖឋüḄíî₹7B.0.1ÔZᨵᦔឋiäḄã₹A-GᵨZcUeU、ᦈæVgḄû☢L^âä。B.0.2ã₹A-GᢥÊᑡFHc:1ᎷV᫡5Ue åþ,Ue᫑☢ᙠÂ、ᦈæᵨÊXfᵫ¤Ue。。2᪷Ue᫑☢ḄLUèᨵᦔឋiäã₹AP。;ì½ã₹AP。ÖᔣãZUe᫑☢¤D,ÞUe᫑☢ឮפU3ឮ×᫡5Ue᫑☢ Ḅþ,½P。,û☢L^。4ìþ3VFHḄL^¥ã。B.0.3ᔠû☢ᔜÑᜐḄL^âäGᢥÊᑡaÓc:Ue᫑☢û☢:Ao-c=—-T-5-+Y^yc°L1—4^(B.0.3-1)WlL^ioL-*0L」Ac᫡û☢:Affs=(B.0.3-2)Aol-»olÓ:——ã₹A(N),«Ueᙠᵨ(ᡈ₹A)ᦔLÊḄLU;Mo——ã₹AᵫZwDXḄrë(N•mm);Aol——ᣚcû☢☢c(mm2);Iol——ᣚcû☢ឋë(mm4);—Ue᫑☢ᡠL^àᣚcû☢íḄ¸58• (mm);^ol——᫡ᡠL^àᣚcû☢íḄ¸(mm)。B.0.4ã₹AḄVLMᔠÊᑡéV:1UVgḄᵨû☢L^âä:Po=Ecgi>Ac£0^Ct,T),M。=P0y0c(B.0.4-1)ᨵᦔឋiäå:wl=w。[1+æL(£,)](B.0.4-2)Ó—Ue᫑☢¤DàᣚcíḄ¸(mm);Ecg,—ὃ⇋Ux8yᵨḄᨵᦔឋiä(MPa);eo——ᔠ᫡Ue᫑☢¤DᜐᙠGyḄ¸LU;nL——5UeḄᨵᦔឋiäå;n0—5UeḄឋiäå;♦dt,T)—UeḄUÝᦪ;0L——ᵨḄUC,H1.1;—ãAÁdcὃ⇋ÁdtḄUeUÝᦪ。UÝᦪᨬì G᪷Ue᫑☢ḄãAÁᳮÙÑᢥ|é⊤6.2.3Ãᵨ。2ὃ⇋Ux8Ḅᦈû☢L^âä:P0=EcsiAc£sh(t,z),M0=P0y0c(B.0.4-3)ᨵᦔឋiäå:wl=«o[1+0l^(《“o)](B.0.4-4)Ó:—ὃ⇋Ux8yUeᦈᵨḄᨵᦔឋiä(MPa);£sh——UeḄᦈLU;0L——UeᦈᵨḄUC,H0.55。3ÂᵨḄû☢L^âä:Â₹AᵨÊᨵᦔឋiäå&Hd&,ᓽwl=wo[1+0l^(,“o)](B.0.4-5)Ó:ᮻ—ÂᵨḄUC,H0。•59• 1)᦮ᓣ9Â:ᎷVÂUᓄÜᔠ᫡ḄÂS,èüL^âäpd5Ue ᵫZ᳛xḄU¤Ù。P0=EcAcA^(as—ac),M0=P0y0c(B.0.4-6)2)ë¤ÂÙ:ᓽᎷV᫡ÂS、Ue´᪀ÂS。P0=ECAC(tsaa—tcac),M0=P0y0c(B.0.4-7)3)¤ÂÙ:¦ᣚḄã₹ALᢥcᑖaÓ,ÍLMᔠc᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ḄÏᐵ⌕。•60• ▬ìCÂïcÕᔣÇḄå᜜⚜bsᔠ᫡ᢰ,ÏC.0.1¤Zå¦ᔣḄ᜜⚜L^ᔠ᫡ḄU¤c,þ°ᢚ´¤[¤Ód·(«c.0.1),ᐸᢰGᢥÊᑡaÓc:/=/o+/s+/x+/e(C.0.1-1)—(4Z?-L2)cosd](C.0.1-2)Ó—"ËUᓄVgḄᔠ᫡ᢰ(mm);Ae---"ËUᓄä(mm);fo、fs、/TBcï-Ó|éP6.3⁚。dC.0.1ᙳ₹7ᵨ£ÝÞᔠ᫡Ḅ,ci1SUe᫑☢;2—᫡;3—ᣚcû☢í;4S⚜L^;5—¦ᔣᙽ;6—7ᐹC.0.2þ°ᢚ´¤[¤Ód·(«C.0.2),"ËUᓄäAeGᢥÊÓc:Ae=A!~A2(C.0.2)Ó——û☢ᜐᔠ᫡ḄMᔣÑ(mm),@ᵨᣚcû☢Cᢥ´᪀^Eï-êc;•61• 2—☠êû☢¦ᔣḄMᔣÑ(mm),@ᵨᣚcû☢Cᢥ´᪀^Eï-êc。dC.0.2ÂðÙᓄ,ÄÅd1SU¤PḄ⚜L^;2—U¤ÜḄ⚜L^ ▬ìDEñ´³e{ᢙ±ò,ÏD.0.1SUeï、Ðl¿ᔣÓMᔠÊᑡüýy,Ðlþ5ᢙuCGᢥÊᑡaÓc:1ÃᵨC50Ue:Ðld55mm,¿ᔣÓÃᵨ#16ḄÐlþ5ᢙuCd:K=l.027CNI-0.744NS)(D.0.1-1)Ðld45mm,¿ᔣÓÃᵨ®16ḄÐlþ5ᢙuCd:K=0.849(Ne~0.629NS)(D.0.1-2)Ðld55mm,¿ᔣÓÃᵨ®20ḄÐlþ5ᢙuCd:K=l.876(NCV~0.929Na)CD.0.1-3)Ðld35mm,¿ᔣÓÃᵨ®12ḄÐlþ5ᢙuCd:K=3.247(NCV~1.007Ns)CD.0.1-4)2ÃᵨC40Ue:Ðld55mm,¿ᔣÓÃᵨ#16ḄÐlþ5ᢙuCd:K=0.943(Ne~0.781NS)(D.0.1-5)Ðld45mm,¿ᔣÓÃᵨ®16ḄÐlþ5ᢙuCd:K=4.167(JVe_l.023NJ(D.0.1-6)•63• Ó:K——Ðlþ5ᢙuC(N/mm)。D.0.2SMᔠ|éD.O.1ᩩéVḄüýy,Ðlþ5ᢙuCḄVLdᐜ⌱+¹Ḅï-。Së¹ᩩ5y,Gᢥ|éPD.0.1ᩩ¡ḄaÓV。•64• |éᵨ89ó1dóZᙠ᡻|éᩩᦻy,¤#,¤⌕tuxḄᵨ89ó᝞Ê:1)⊤$tu,%᪵ÐGḄ:☢8Ãᵨ“rs”,Ö☢8Ãᵨ“tἭ”;2)⊤tu,ᙠüýÊᙳL%᪵ÐḄ:☢8Ãᵨ“L”,Ö☢8Ãᵨ“L”ᡈ“”;3)⊤ᐕ()ᨵ⌱+,ᙠᩩ5(Gy✌ᐜL%᪵ÐḄ:☢8Ãᵨ“£”,Ö☢8Ãᵨ“£”;4)⊤ᨵ⌱+,ᙠSVᩩ5ÊGþ%᪵ÐḄ,Ãᵨ“G”。2ᩩᦻᢣóLᢥᐸᨵᐵ᪗᡻Ḅᑏ-dLMᔠ……ḄéV”ᡈ“Lᢥ……᡻”。•65• ®ᵨ᪗¯h《zO´᪀》GB/T700《᫑᫡ᵨ´᪀》GB/T714《´᪀ᵨËnᜧØᜮ᪝、ᜧØ、¿ᙌᢈÂᩩ5》GB/T1231《UeᵨP1ᑖ:Ùᐝᙊ》GB1499.1《UeᵨP2ᑖ:Ù|î》GB1499.2《Úᔠ:Ën´᪀》GB/T1591《´᪀ᵨuËn᪝þ》GB/T3632《zᩩ》GB5117《Úᔠ:ᩩ》GB5118《⚜L^UeᵨÄ》GB/T5223《⚜L^Ueᵨ¨´》GB/T5224《ᵯg.ᵨᙊ.ᜮ┑》GB/T10433《⚜L^Ueᵨj》GB/T20065《*᫑᫡é》CJJ11《å7´⚜L^¨´》JG161《aî᫑Ëᵨé》JTGD60《aîUeè⚜L^Ue᫑Ëé》;[TGD6266•  ᐳ#᪗-Ueᔠ᫑᫡éGB50917-2013ᩩᦻ9ó ᑴ9ó《-Ueᔠ᫑᫡é》GB50197—2013,¬20139ᨴ6þP1441abᢇB[。-Ueᔠ᫡ᵫZhᐙᑖBᢵᩞ5UeᩞᧇᔜfḄd,ᙠᡃᑮµ®ḄLᵨ。ᯠ¨EPᑁVᨵ┐¤-Ueᔠ᫡ᙠ᫑᫡´᪀LᵨḄé,caîé-Ueᔠ᫡Ḅᩩᦻ*Íᙠ《aî᫑Ë´᪀èᩈ´᪀é》JTJ025—86,Ãᵨ](L^ï-,¡,w5c᪗《aî᫑Ëᵨé》JTGD60Ḅ³⌕?S,%Þ-Ueᔠ᫡Ḅd;ឋhᙠ᫑᫡´᪀ḄLᵨᑮSVḄ▲ᑴ,%aáᑴ|éḄÒ/ᡠᙠ。|éᙠᑴ«,ᑴ¥µ®Ḅ¯°Ẇ,±²³´µh¸¬¹,xy¼ὃµᨵᐵ▭᪗᜜ᐜ¥᪗。dóZᜧ、、ºẆæᓫÑᨵᐵᕒᙠÞᵨ|éyhᳮ᡻ᩩᦻéV,《-Ueᔠ᫑᫡é》ᑏᢥ᯿à、⁚、ᩩz·ᑏµ|éḄᩩᦻ9ó,¤ᩩᦻéVḄEḄ、þþè᡻◤RÒḄᨵᐵ⚗¥µ9ó。üá,|ᩩᦻ9óᐹᜓ5éᦻxæḄ-Õᦔ^,p|ÞᵨὅdᳮÃÄééVyḄ¼ὃ。•69• Q³ᑣ.......................................................................(73)ÂäM1...................................................................(75)ᩞᧇ...........................................................................................(76).1Ue...........................................................................................(76).2ᩞ................................................................................................(77).3Ú......................................................................................(79)•4⚜L^......................................................................................(79)Ô|éV...........................................................................................(81).1S1éV......................................................................................(81)•2²Ah^᩽▲Y᝱c..............................................................(85).3Þᵨ᩽▲Y᝱¹c..............................................................(86).4ᢝYýèᨚYýL^¹c....................................................(86).5⌚³Vc.................................................................................(87).6ä)c......................................................................................(87)²Ah^᩽▲Y᝱c................................................(88).1ᢙr²A^c............................................................................(88).2ᢙu²A^c............................................................................(91).3᦮³Vc.................................................................................(91)Þᵨ᩽▲Y᝱¹c..............................................................(95).1S1éV.....................................................................................(95)1.2L^¹c......................................................................................(96).3ᢰ¹c......................................................................................(100);.4³V¹c.................................................................................(102)ᢙuþ5......................................................................................(107)•71• 7.1SqÜÝ.......................................................................................(107)7.2ᢙ±¥7s,#........................................................................(107)7.3ᢙ±³e{®,...................................................................(109)7.4é᫑☢´µᔣᢙ±,.................................................(111)7.5ᢙ±³e{Ḅᦪ,c....................................................(112)8᪀⌼⌕..........................................................................................(114)8.1é᫑☢´..................................................................................(114)8.2᫡................................................................................................(115)8.3ᢙ±³e{..................................................................................(115)8.4ᐸi᪀⌼⌕¸..................................................................................(116)▬BBÔZᨵᦔឋiäḄã₹A-.................................(117)▬BCÞ¦ᔣḄ᜜⚜L^ᔠ᫡ᢰcï-...........................................................................................(118)•72• ᑣ1.0.1-Ueᔠ᫑᫡ᙠaî、*᫑᫡/¬ᑮ®ḄLᵨ。caîé-Ueᔠ᫡Ḅᩩᦻ*Íᙠ《aî᫑Ë´᪀èᩈ´᪀é》JTJ025-86,Ãᵨ](L^ï-,¡,w5c᪗《aî᫑Ëᵨé》JTGD60Ḅ³⌕?S。dµÞ-Ueᔠ᫑᫡Ḅ´᪀#ᐹᨵºEឋ、ᐜ¥ឋèᔠᳮឋ,³´ᳮÙẆh¸¬¹,Íᢥ᯿᫑᫡´᪀³ឋéḄ⌕¥-Ueᔠ᫑᫡éḄᑴᐹᨵr⌕ឋ。1.0.2|éþc#᪗《´᪀G☠ឋUS᪗》GB50153éVḄwᑣᑴ,〉ᵨkdaî᫑᫡、*᫑᫡(Uid⍝îḄ᫑᫡),5EPaî᫑᫡、*᫑᫡ÃᵨḄ´᪀éḄ〉ᵨkáSḄ。ÔZh¸¬¹,〉ᵨVd120m。⍝]᫑᫡,ᵫZᐸᱯ¤´᪀Vᨵᐸ⌕,G¼᯿Þᵨ。|é〉ᵨZᱯïUeḄᔠ᫑᫡,a〉ᵨZᔠ᫑᫡Ḅã)。|ééVḄ-Ueᔠ᫡ÝᢣᵫUe᫑☢O¤ᡈ9¤æ᫡«ᢙuþ5´ᔠ¨ᡂḄᔠ᫑᫡。|éḄéV〉ᵨᐸû☢¤ÓḄᔠ᫑᫡´᪀(᝞´᪀᜜ᒹUeᡈUe᜜ᒹ´᪀)。1.0.3ᢥ᯿᩽▲Y᝱-¥ác#᪗《´᪀G☠ឋUS᪗》GB50153ḄÔ|⌕。᩽▲Y᝱ᑖd²Ah^ÞᵨÍ。²Ah^᩽▲Y᝱çè᫑᫡Ḅ´᪀Dᐰ,ᒹ3᪀5èþn、ä)、´᪀᦮³Væ;Þᵨ᩽▲Y᝱çè᫑᫡ḄÞᵨᩩ•73• 5èὊឋ,ᒹ3´᪀ḄU¤、ᢙ÷ឋæ。᫑᫡´᪀ÒÓÍï᩽▲Y᝱,ù²µ´᪀ḄDᐰឋ、〉ᵨឋèὊឋ,Þ᫑᫡´᪀ÒÓG☠ឋḄ⌕,ëᑮᐰ⚜VḄgh。þᭆ᳛ᳮÙdÔẠḄ᩽▲Y᝱,ᙠÔᑁ´᪀ḄG☠ᢣ᪗ÒÓE᪗ᢣ᪗,´᪀DᐰáᢣᙠUÔᭆ᳛Ò/ḄDᐰ。1.0.4◤⌕ÒÓḄᐸÏᐵéᵫ|éḄ〉ᵨkᡠV,aîḄᔠ᫑᫡Ḅ◤⌕ÒÓaî᫑᫡éḄ⌕,*ᔠ᫑᫡Ḅ◤⌕ÒÓ*᫑᫡éḄ⌕。74 2°±Âäᑡµ5ᔠ᫑᫡ÏᐵḄÝឋÂä,þëᑮᭆ5⊤ëUSḄEḄ。M1ᢥᩞᧇឋh、ᵨ5ᵨᦔL、cÝᦪæKVᑖᑡ。M1¼᯿aî᫑᫡é,þëᑮÞᵨFḄSឋ。75 3ᩞᧇ3.1Ue3.1.1ᢙn᪗Ýᢣ5ᵨ᪗ï-ᑴ、YNà28dÁ,þ᪗¹ï-ÞḄᐹᨵ95%ù²᳛Ḅᢙn(þMPa)。UenæÍdÅZ150mmḄªïᢙn³ᑖ[ᙳ ¦¯1.645ý᪗Ù(ïÙ)Ḅ,PsC,áUeᔜ⚗^Eᢣ᪗ḄÔ|¡⊤ 。3.1.2⌕^Ue᪀5S1Ýᢣ᫑☢,᪷SPᑁᩞᧇḄÞᵨèḄᱯ,UenæÍ⌱ᵨC30〜C60。3.1.3íDᢙn᪗áþÉ.ndÔẠḄ,Íὃ⇋h´᪀55ḄÙ¤nḄx8,w〉Sὃ⇋UeḄᾪឋ¤nḄx8。íDᢙn᪗ 5ªïn(næÍ)ḄᐵÝd:y*ckUc2ác3y"cu’k(1)Ó:/ek——UeíDᢙn᪗;^cl——É.n5ªïnḄᣚcÝᦪ,ᢥ¹ᦪUH,C50èþÊUeH0.76,C55〜C80H0.78〜0.82(´ឋᑁä);U——᪀5n55nḄᣚcÝᦪ,ᢥ¹ᦪ謹H0.88;áos——UeḄᾪឋÝᦪ,C40þÊHd1.0,C40〜C80H1.0〜0.87(´ឋᑁä);/cu,k——UenæÍ。᝞UenæÍC50Ḅᢙn᪗d:50X0.76X•76• 0.88X0.97=32.4(MPa)„3.1.4Uenáᙠ᪗ḄÔẠ,᪷G☠ᢣ᪗ᡠVḄᩞᧇᑖ⚗Ýᦪ¥cᑮ。|éḄH 5c᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ḄHS。3.1.5Ueឋiäxc᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ḄH。3.1.6UeḄᐸᱥᳮ^Eᢣ᪗(uᑗiä、ë&å、´Ýᦪ)xc᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ḄH。3.2ᩞ3.2.1ᩞḄX«,ᒹ3ᰚ、ῃè、ᑴèÜḄᜐᳮæ,%R}¤ᩞḄᱥᳮ^Eឋhᨵ´ᜧḄx8。ᩞḄᑴD、AïÓ、ÚÂῖ⇨µḄx8,ᑣ¡¤´᪀ḄឋhX´ᜧḄx8。´᪀ᡠᵨḄᩞ}áᛛឋå´¥Ḅᩞᧇ,5ᐸ´᪀ᩞᧇå´,n⌕ËL,û☢Ïa⌕ðL。xy,ᯠ´᪀ᩞᨵå´¥Ḅឋ,üᩞµ、Ñ、^Y᝱、Â}¡¤ᨵx8。¤Z᫑᫡´᪀ᵨḄᩞ,ᵫZL^öË、^×ᩖ、^ᵨᜧæCO,ᩞḄ1èµäæÍ◤⌕┐¤´᪀Ḅᱯ¥ᓛO。ᩞḄµäæÍ,⌕áᩞḄឋᢣ᪗,Ö᧜ᩞឋ¤ÂḄ,ᓽᾪឋ。µäæͤLḄÂd¹Â,ϤZxSឋᢣ᪗,¹ÂôÚ,ᑣ⊤ᩞᾪឋôÚ。⌱ᵨ,ïµäæÍḄᩞ,◤⌕᪷ᨬᜧÑ、ᡠᙠᙢᨬÚÂ、᪀⌼5⁚、L^öèLUl᳛æLïCOᩭWᔠὃ•77• ⇋。ÃᵨᡠᙠᙢᨬÚ¤L¹Âᩭ⌱ᵨᩞµäæÍ,hù²ᩞᧇ⌱+ḄDᐰឋèᔠᳮឋ,w¤ZS1Ḅ¨(wZù。ᨬᜧÑ⌱+5¹ÂᨬÚÂḄᐵÝèᑴ⌕G¼Ój᫑é《Steel,concreteandcompositebridgesSPart3:Codeofpracticefordesignofsteelbridges》BS5400—3!2000ᐵZᨬᜧ](ÑḄÏᐵᩩᦻ。3.2.2c#᪗《zO´᪀》GB/T700、《Úᔠ:Ën´᪀》GB/T1591á´᪀ᵨ=ḄÔ|ᩞᧇ᪗。3.2.3c#᪗《᫑᫡ᵨ´᪀》GB/T714á〉ᵨ᫑᫡´᪀ᱯḄÝᵨᩞ᪗。¤ZÞᵨ▲d100Ḅᔠ᫑᫡Ḅ´᪀ᩞᧇ£Ãᵨ᫑᫡ᵨ´᪀。ᩞḄná᪷᩽▲Y᝱ÊG☠ᢣ᪗⌕Ḅ、ßᩞᧇᑖ⚗ÝᦪḄc。(1)ᢙ¹、ᢙᢙrn/dáþᩞḄ4cdÔẠ◀þᩞᧇᢙ^ᑖ⚗ÝᦪnÍH5Ḅ᦮ýᦪ¨。ᩞᧇḄᢙ^ᑖ⚗ÝᦪH7r=1.25。ᩞḄ4cHfc#᪗《᫑᫡ᵨ´᪀》GB/T714。·᝞:Ñd50mmþÊḄQ345q,ᐸ4cn/y=345MPa,ᑣᢙ¹、ᢙᢙrn/d=/y/yR=345/1.25=276(MPa),Hd275MPa。(2)ᩞḄᢙun/vdáþ/ddÔẠ,/vd=/dA/I=0.577/d,5ᑁᐸÏᐵéùᢝS。(3)5â☢²(ᑬ⚔Ï)ÞDᜐXᛛឋU¤,᡽ᜧµD☢c,ÏSZ0˵ᩞ²²A^,H/cea-1.5/d,5ᑁᐸÏᐵéùᢝS。3.2.4ᩞᧇèÏLḄ£,x8ᜮḄឋh,⌱+¬«£OVᡠ±Ḅ5ᩞᓛOḄᩞᧇè£,áù²µäḄÔ|⌕。3.2.5|ᩩéVµÃᵨËn᪝ᵨZ᥅5þḄᩞᧇ⌕è⚜¹^。•78• 3.2.6dᢙuþ5Ḅ᪝┑,ᐸឋh5£ᨵᐸóᱯVḄ⌕,LÒÓc#᪗Ḅ⌕。3.2.7ᱥᳮឋháᩞḄÔ|ᢣ᪗。ᐸ,ᔠ᫑᫡5UeᙠÂᵨÊᵫZxḄ´Ýᦪ¡Vgû☢ᑁḄèüL^,CDS1Ãᵨ5UeSḄ´Ýᦪᩭ¹ᓄcÂᵨḄᦔL。ᩞḄ´ÝᦪHd1.2X10-5/°C。3.3£®¤3.3.1ᩞᧇḄ⌱ᵨ⌕,wᑣ5cḄᑁᐸéS,Íᢥ?Ḅ#᪗Ḅ⌱ᩞwᑣH`µHRB235。3.3.2ÚḄn᪗HfÏL#᪗Ḅ4c(ᐹᨵðZ95%Ḅù²᳛)。3.3.3ÚḄndn᪗ ◀þᩞᧇᑖ⚗Ýᦪ1.2ÍH᦮,ÒÓE᪗G☠ᢣ᪗Ḅ⌕。3.3.45cᨵᐵ#᪗HS。3.4⚜bs¤3.4.1ᔠ᫑᫡Ḅ⚜L^S1ᑖdUe᫑☢ᑁO5᦮᫡᜜OÍïïÓ。ᑁOḄ⚜L^Ãᵨ¨´èÄ,ð᪀5aÃᵨ{j;᜜üS1Ãᵨ¨´(╄Zᡈèæ6¨´)。⚜L^ÄÝᢣc#᪗《⚜L^UeᵨÄ》GB/T5223èᐸPS1ᦋᓫ`◀L^Ḅ°☢¥Ä、îÄᐝ☢Ä。3.4.2¨´5ÄḄᢙ¹᪗nHfc#᪗Ḅᢙ¹᩽▲n,{jḄᢙ¹᪗nHfÏᐵ᪗Ḅᩞᧇ4c。ᙳᨵðZ95%Ḅù²᳛。3.4.3⚜L^Ḅn 5᩽▲Y᝱ÊḄL^ᨵᐵ。S1•79• ±d,ᑁOḄ⚜L^ᙠ᩽▲Y᝱Êhëᑮᐸ4c(ᡈᩩ54c),ᡠþᑁOḄ⚜L^ndᩞᧇ4c◀þᩞᧇᑖ⚗DᐰÝᦪ。¨´þ᪗nḄ0.85ýdᩩ54c,ᦑᐸnd᪗n¼þ0.85Ü◀þᩞᧇᑖ⚗DᐰÝᦪ1.25。᝞᪗n(᩽▲n)d1860MPaḄ¨´,ᐸnd1860X0.85/1.25=1264.8(MPa),H᦮d1260MPao{j᪗nᓽd4c,ᦑnd᪗n◀þᩞᧇᑖ⚗Ýᦪ(1.20),᝞᪗nd785MPaḄ{j,ᐸnd785/1.20=654.2(MPa),H᦮d650MPa。|éḄH 5c᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62S。◤⌕9óḄá,¤Z᜜OḄ⚜L^ü(ᡈᑁḄå7´),ᵫZᐸ᩽▲Y᝱ÊḄ᩽▲L^5´᪀Ḅ᦮ᨵᐵ,1ëᑮ4c,ᦑ²Ah^aÓḄn Láᙠ᩽▲L^ḄÔẠ¥ᩞᧇDᐰÝᦪḄᢚ¦。3.4.4᜜å7´⚜L^Ḅ᩽▲L^d᩽▲L^◀þὃ⇋ᩞᧇឋh、´᪀ÝæCOḄᑖ⚗Ýᦪ,ÒÓE᪗G☠ᢣ᪗Ḅ⌕。3.4.5⚜L^Ḅឋiä5ᐸcᨵᐵ᪗S。•80• 4H04.1S1éV4.1.1²Ah^᩽▲Y᝱cᒹ3µᢝYýèᏔᯠYýÊ᪀5û☢Ḅ²Ah^c,þè³V、⌚、ä)Ḅc。ᙠᵨè₹AḄᔠ,û☢ᢙr、ᢙu²Ah^þè᦮³VcyᦔLᔠᢥ᯿Ô|ᔠ;⌚cä)cyᦔLᔠᢥ᯿᪗ᔠ(⊤1)。Þᵨ᩽▲Y᝱cᒹ3µᢝYýÊ᪀5Ḅᢰ、ᢙ÷ឋèL^æ¹c。L^¹cáᵨh¸¬¹ᩭᑴ´᪀ḄÞᵨY᝱,hµaáncḄ⊡ᐙ。ᨚYýS1GþÃᵨL^ᑴ,ü¤Z´᪀^Y᝱å´×ᩖḄý,aL½¥²Ah^èU¤Ḅ¹cèᑴ。ᔠ᫑᫡ᵫZᐸz·¤´᪀ḄL^èU¤Y᝱x8´ᜧ,ᙠcL^èU¤y,Lὃ⇋z·Ḅx8。⊤1¹cᑁ]è₹Aᔠ⊤Yý᩽▲Y᝱¹cᑁ]₹Aᔠï-ᢝYý²Ah^᩽▲Y᝱û☢²Ah^Ô|ᔠᭆ᳛᩽▲Y᝱-ᢝYý²Ah^᩽▲Y᝱þ5²Ah^Ô|ᔠᭆ᳛᩽▲Y᝱-ᢝYý²Ah^᩽▲Y᝱᫑᫡⌚᪗ᔠ᩽▲Y᝱-ᢝYý²Ah^᩽▲Y᝱´᪀ä)᪗ᔠ](L^-ᢝYý²Ah^᩽▲Y᝱þ5ä)᪗ᔠ](L^-ᢝYý²Ah^᩽▲Y᝱᦮³VÔ|ᔠ᩽▲Y᝱-ᢝYý²Ah^᩽▲Y᝱᫑☢¶ᔣᢙuÔ|ᔠᭆ᳛᩽▲Y᝱-ᢝYýÞᵨ᩽▲Y᝱ᢰ、÷ÖᦔLᔠᭆ᳛᩽▲Y᝱-ᢝYýÞᵨ᩽▲Y᝱ZᢰZᦔLᔠᭆ᳛᩽▲Y᝱-•81• I⊤1Yý᩽▲Y᝱¹cᑁ]₹Aᔠï-ᢝYýÞᵨ᩽▲Y᝱³V᪗ᔠ᩽▲Y᝱-᫡L^、UeᢝYýL^Y᝱᪗ᔠឋï-L^᫡L^、UeᨚYýL^Y᝱᪗ᔠឋï-L^4.1.2ÔádVGUᵨæḄH¨⌱ᵨḄy¼ᦪ。ÃᵨþG☠ឋᳮÙdÔẠḄ᩽▲Y᝱-◤⌕V⌱VḄy6,ìᐸdOVᔜïGUᵨHè5yÏᐵḄᩞᧇឋhHḄþ,%Vy6ᓽdÔ。ÔᑁḄ´᪀DᐰÍ&¤Ò/ḄDᐰ,¨á´᪀ḄG☠ᢣ᪗ÒÓE᪗ᢣ᪗,ᙠUÔᭆ᳛Ò/ḄDᐰ。᪷#᪗《´᪀G☠ឋUS᪗》GB50153—2008▬BAPA.3.2ᩩ,᫑᫡´᪀ḄÔLd100。4.1.3Þᵨ▲áéVḄ´᪀ᡈὅ᪀5◤⌕¥ᜧᓽGᢥ⚜VEḄÞᵨḄ▲,ᓽ᫑᫡ᙠ、、Þᵨ、NÊëᑮḄÞᵨ▲。᪷#᪗《´᪀G☠ឋUS᪗》GB50153—2008▬BAPA.3.3ᩩ,᫑᫡´᪀ḄÞᵨ▲ᢥ᯿|éḄ⊤4.1.3ḄéVÃᵨ。4.1.4|ᩩéVµ|é〉ᵨḄ-Ueᔠ᫑᫡ḄÔ|¤Ó。h▭,☢Ḅ¤Ó5ᨵSVḄᐵÝ,S1¹?᫡SᜧZ35myGÃᵨO¤᫡,ᜧZ35m£Ãᵨ9¤᫡。¤ZþI᫡,G〉Sãᜧ,üÅ5å£ðZ0.70。5Ueᔠû☢ḄDíS1£Z᫡û☢ᑁ。4.1.5᫡ry,Ue᫑☢ᵫZu>ᦔL,ᙠ¿ᔣxSµ6Ḅ-ᔣL^ᕈæ。¸æᩞᧇ^Eï-Ḅû☢ᎷVᡂª,üGÃᵨËæᩞᧇ^Eï-¥。ᙠù²c{ḄP0Ê,dµhᵨ¹óḄ¸æᩞᧇ^EaÓ,Ãᵨµᨵᦔ{Ḅᭆ,ᢥ᯿ L^ÏæᡈὅL^cÏæḄwᑣ¤•82 c{¥ᢚ¦,Þᢥ¸æᩞᧇ^EaÓḄL^æZᢥËæᩞᧇEï-Ḅ L^(ᡈL^cÏæ)。|ᩩݼ᯿âé《Eurocode4:Designofcompositesteelandconcretestructures》(þʹiâé4)ᐵZᔠ᫡ᨵᦔ{ḄéVÃᵨ。4.1.6-Ueᔠ᫡ᙠUe᫑☢ᑁ[Ḅ⚜L^ḄL^ᜫCO5Ue᫡áÔ|SḄ。᜜üS1ᨵᐜM-⚜L^ḄÐ-,ᦑ᜜üḄ⚜L^ᜫCOµ⚜L^5±5 ḄÂÙS⚗。´᪀Ḅèü,-Ueᔠ᫡ḄUe᫑☢ḄᦈUᵨ¡Vg᦮Vû☢ᑁḄèüL^,UeᦈULUᵫZ´᪀èü¨ᕈcᔠ᫡Ḅᱯ,ᐸLUS1´Ue᫡⌕ð。ᦑᦈUCOVgḄ⚜L^ᜫ◤⌕ὃ⇋%Vᱯ,G᪷⚜L^SDᜐᵫZᦈUᵨVgḄL^Sᑖ[ÜḄL^âä(LUâä)ᩭcÏLḄ⚜L^ᜫ。¤Z᜜⚜L^,ᦈU¡âã´᪀ḄU¤ä,S1᜜üḄ⚜L^ ¡ᶍᨵâã¨á9Ú,᝞wDᐰᙢ¹ᓄc,GᦈUCOVgḄ᜜ü⚜L^ᜫ。4.1.7UeḄᦈUiÝÃᵨ᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62-2004▬BFḄci。DiáÔZ《CEB—FIPModelCode》ḄaÓ,ᢥS1ấ⏚]ödᡈºödḄx8Ýᦪ,Í┐¤C50þḄUe¥µᢚ¦。AÓ᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62—2004ᩩᦻ9óP6.2.7ᩩ。4.1.8ᔠ᫑᫡Ḅ´᪀5Ue᫑☢´ᔠÜ,ᙠ᦮ᓣ9ÂḄᵨÊ,ᵫZ5UexḄ´Ýᦪ,û☢ᑁ¡XèüfL^。ᙠÂḄᵨÊ,û☢ᑁ¡XfL^。¤ZÔ☟V´᪀,û☢ḄfL^Q¡VgQᑁ^。•83 ᦮ᓣ9ÂᵨèÂᵨḄH 5᪗《aî᫑Ëᵨé》JTGD60—2004P4.3.10ᩩéVS。ᙠSVḄyᕜᑁ,-Ueᔠ᫡⊤☢ḄÂᓣ、Â9ì᫡¬ᔊᨬË(⚔☢ÂË)、ᨬÚ(⚔☢ÂÚ)ÂḄUᓄ。ᵫZUeḄÙឋhxÞὅÂÆ᫡û☢ËïᔣX¨Xᑁ^,S᛻ÂUᓄùᢝS6yÜ,ὅÂÆZS,½ᑁ^⌲j`ᜫ。ᦑÂXḄᑁ^áḄ。ᡠᨵẆᙳ,ÂÆ᫡û☢ËḄᑖ[á´ឋḄ,wS1G⊤ëdÍïᑖ[¤Ó:ᑖ6ᢚ´¤Ó(id“S1¤Ó”),Ue᫑☢ᙳᒴᓣ9¤Ó(id“¹ᓄ¤Ó”)。ÃᵨS1¤ÓḄ⌕éᨵᡃḄ《aî᫑Ëᵨé》JTGD60—2004、jḄ《-Ueᔠ᫡᫑é》BS5400:PART2:1978(Steel,concreteandcompositebridges—Part2:Specificationforloads)、>ᔜὶᔠé(《AASHTOLRFDBridgeDesignSpecifications)),ThirdEdition,2004)æ,D᜜,2003ᓭᜧE¤☘URîᔠ᫡5¥µ9¹¨ᑮḄÂᑖ[¤Ó2004½ḕ/Ẇ▾¤??£ᜧ᫑(65m+2X120m+65mC᪀᫑)Ue᫡☢ÞḄMᔣÂaêDᑖ[¤Ó。Ãᵨ¹ᓄ¤ÓḄ⌕éᨵᡃḄaî᪗《aî᫑Ë´᪀èᩈ´᪀é》JTJ025—86、ᡃḄRî᪗《Rî´ᔠ᫡éV》TBJ24—89、|é《⍝î᫑ï@I᫑Ö》。âéBSEN1991—1—5:2003(Eurocodel:Actionsonstrucures—Parti—5:Generalactions—Thermalactions)xyÃᵨµBÍï¤Ó。GÓ,ᔠ᫡ÂḄᑖ[¤Ó,÷ÂḄᑖ[üýx8ᜧ,⌕ᩞᧇḄÙòឋhᑴ。¤Z-Ueᔠ᫡ÂḄH,ᔜ“S1¤Ó”ḄÂHÙ´ᜧ,>ÃᐰᑖdkVÂ,,ÂḄᓣÂᨬᜧd21°C〜30°C,9Âᨬᜧ᪷ᑖdᓣÂᨬᜧḄS30%(Ue)S20%(Ç☘Uejé•84• ÂḄᓣÂᨬᜧd16°C,9ÂᨬᜧdS8°C;âé5jéÏx;ᔜ¹ᓄ¤ÓḄÂHå´ê,ᑖdUe᫑☢å᫡ÂË、Ú10°C〜15°C。¼᯿ᑁ᜜é,|éÆᵨµᡃc᪗《aî᫑Ëᵨé》JTGD60ḄéV。4.2¥7Qs᩽▲᝱,4.2.1|ᩩáᐵZ-Ueᔠ᫑᫡DᐰæÍḄ⌱ᵨ。⊤4.2.1ḄDᐰæÍᑜᑖáᢥ᯿c#᪗《´᪀G☠ឋUS᪗》GB50153ḄÏᐵéV,Íὃ⇋-Ueᔠ᫑᫡Ḅᱯ¡Ḅ,5c᪗《*᫑᫡é》CJJ11ùᢝS。4.2.2|ᩩ¡µ²Ah^᩽▲Y᝱cḄ⊤ëÓ,〉ᵨZ|é´᪀᪀5Ḅ²A^c。|éxyᢣᙠcÃᵨ⚜L^ḄÔ☟V´᪀Ḅ²Ah^᩽▲Y᝱y,Lὃ⇋ᵫ⚜L^VgḄQᦔL,5c᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ùᢝS。|ᩩdnᑴឋᩩᦻ。4.2.3|ᩩéVµxḄ²Ah^᩽▲Y᝱cyḄᵨᔠïÓ。#᪗《´᪀G☠ឋUS᪗》GB50153—2008P4.1.1ᩩP1méV,S´᪀ᡈ´᪀᪀5ᜫ³Vy,L±d½´᪀ᡈ᪀5Ô«µ²Ah^᩽▲Y᝱。-Ueᔠ᫡Ùᙠ▤6Qá@⃩▤6,S᫡ᑖ²´ᜧḄ^y,}ᨵGhcᜫ³cè,ßà¡Þ᫑᫡lẚ,%ïẚᕈᾪឋẚḄᱯឋ,ᐹᨵÎBឋ。CD,ᔠ᫡᫑ᙠ²Ah^᩽▲Y᝱y,◀LÒÓ|éḄn⌕᜜,VL᪷|éḄÏᐵéV¥᦮³Vc。4.2.4-Ueᔠ᫡Ue᫑☢Ḅ᪀⌼èc,5Ue᫡Ḅ,⌕áᦈUḄèüᦔL¤Ue᫑☢Ḅx8、þ5¤Ue᫑☢ḄᵨèᵫZ¿᫑ᔣ´᪀¤Ue᫑☢èüC´ðḄx8æ。85• 4.3²³´ᵨ᩽▲᝱^4.3.1Ó(4.3.1)dᢝYý᩽▲Y᝱Ḅ¹c⊤ëÓ。ᵨḄᦔLᔠS1Ãᵨ᪗ᔠ、⚣⍗ᔠèᔠ,ßDᐰæÍVḄS⌕ឋÝᦪ;▲ḄHéZh¸Ḅ¬¹。4.3.2ᵨḄᔠéV5c᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62ḄÏᐵéVÔ|S。4.3.3᫡Ḅᢰᑴá´᪀CḄᑴ⌕,⚜áᡂ᫑szḄ⌕。▲ 5c᪗《aîUeè⚜L^Ue᫑Ëé》JTGD62S。4.3.4#᪗《´᪀G☠ឋUS᪗》GB50153—2008P4.1.1ᩩP2méV,S´᪀ᡈ´᪀᪀5cx8ÞᵨᡈὊឋhḄY᝱,L±d½´᪀ᡈ´᪀᪀5Ô«µÞᵨ᩽▲Y᝱。-Ueᔠ᫡Ḅᢙrh^⌕ᩭfè,èôᜫ³,ìᐰ᫡ẚ;S@ècᜫ³,ῳᜫᣵµè¤Ḅ?ᥛ,ᨵnᜧḄ¹^6,ῳa$]᧕ញᒓâãᐸ4s,ßàEÞᐰ᫡ẚ。k᜜,ᔠ᫡ḄUe᫑☢ᵫZÂ、Ueᦈ᫡èüæCO,᫑☢]᧕c÷j,tSyGx8᫑᫡Ḅ᦮ឋ。CD,-Ueᔠ᫑᫡ᢥÞᵨ᩽▲Y᝱y,◀LÒÓ|ééVḄn⌕᜜,VL᪷|éḄÏᐵéV,¥´᪀³VUeÐ÷¹c。4.3.5¤ZxḄ᛻,Ue÷ÖḄᑴ⌕5c᪗《aîUeè⚜L^Ue᫑ËéHTGD62S。ᔠ᫑᫡ḄUe᫑☢ᵫZUeᦈᑮ᫡Ḅèü,ᙠᑁ¡X¹L^,ᓽÞárë,6,᫑☢¬Ghc÷Ö,cyL¡bᐙᑖS。4.4ᢝ§cn¨ᨚcbs4.4.1〜4.4.3L^▲ḄHéZh¸¬¹,Í5EPc86 ḄᨵᐵéÔ|S。ᑖᑴdn¹cḄ⊡ᐙ。4.5ª⌚¬Ý,4.5.1´᪀Ḅ⌚³VáZ´᪀²Ah^᩽▲Y᝱Ḅ⚪,ᐸẚᐹᨵÎᯠឋ5tSឋ。᫑᫡Ḅ⌚⌕áᵫZ×s₹AḄwAᵨ。⌚Ḅ᩽▲Y᝱⌕ᨵ:SáᙠwAᵨÊ,᫡dCìëS⌚í´ëᑮÁEY᝱;áᙠwAᵨÊ,᫡ëRᑖX´ᜧḄ¦Ø,Vgèüᩩ5è⊝ᩩ5ḄᦋU,ឤAᵫ³VᦔL⌲FUd⌚ᦔL¨ëᑮÁEY᝱。S1¿ᔣᙳÃᵨ"??²Ḅ᫡⌚⌕áPSïY᝱。ÅÃᵨ"??²、Ãᵨᓫ??²ḄþI᫡(´᫡ᡈs´᫡)GhBPïY᝱。PSïY᝱¹c´d?¹ᓫ,Ãᵨ¹ᓫḄ^E⊝aÓᓽG;PïY᝱«´d×ᩖ,Lþᑴèüᩩ5Ḅᨵᦔឋèᑴ?ᜐ᫡¿ᔣ¦Ø▲ᩭ。ᐹd:(1)ᙠᨬᑭḄ₹Aᡈᵨ᪗ᔠÊ,?²cῃ;(2)ᙠᢙ⌚ÝᦪyqfýḄ⌚ᵨ5fS᪗ᔠÊ,-S?²ᜐ᫡Ḅ¿ᔣ¦ØS1Ô«1/50。Wᔠh▭@⃩×s5×s₹AḄÏîᐵÝ,Vᢙ⌚ÝᦪòLðZ2.5。4.5.2xᔣÍVs⍝þḄᢚ¦,¤Z⌚x8ᜧ,ᢚ¦ÝᦪwDᐰḄHd1.0(ᢚ¦);5×s₹AxyᵨḄT₹A,Gᢥᡠᙠᙢ10S⍗è25m/sTlḄð c。×s₹AḄ¹ÞᵨÝᦪáÔZ?²^ḄÝᦪ,£〉SHᜧ。4.6®,4.6.1〜4.6.4|éḄä)¹cï-Ãᵨ](L^À-,5cᨵᐵ᪗S,ᐹ¹cG¼᯿ÏL´᪀é。þ5Ḅä)¹cLMᔠ|éḄÏᐵᩩᦻéV。•87 5¥7Qs᩽▲᝱,5.1ᢙr²A^c5.1.1ᢥᛛឋᳮÙc-Ueᔠ᫡û☢Ḅᢙr²A^y,⌕᪀5Ḅ³V⚪hᐜZû☢ᛛឋPB,ᦑ¤᫡5Ḅ{Ñå´tuḄ▲ᑴ,þÔÕᵫZ5ᜫ³¨9Ú᪀5Ḅ²A^。¼ὃâé4Ḅ⌕,Ãᵨᛛឋï-y,dµù²᪀5ḄᛛឋBÅ,ÃᵨᩞḄ^EឋhLÒÓn4å/u//y>1.10,¸Z᳛ðZ15%,ÏLZᢙ¹n/uḄLUeuðZ15ý4cyḄLUey。r-Ueᔠ᫡᪷´᪀³V5û☢ᛛឋBÅ ḄᐵÝ,ᢥâé4Gþᑖd:PSû☢,ᐰû☢ëᑮᛛឋ,ÍG¤ᡂᛛឋ(ᦋU´᪀¤ᡂᑁ^Sᑖ[);Pû☢,ᐰû☢Gëᑮᛛឋ,üh¤ᡂᛛឋ,³V⚪ᐜZᛛឋc;P°û☢,û☢Åëᑮᛛឋ,³V⚪ᐜZᐰû☢ᛛឋc;Pkû☢,³V⚪ᐜZᛛឋc,ᓽ²Ah^Èᐰᵫ³Vᑴ。PS、Pû☢GÃᵨᛛឋcû☢ᢙr²A^,P°û☢GÃᵨᛛឋcû☢²A^,Pkû☢S1áᐕ(ÃᵨḄ。û☢Ḅᑖᢥ᯿èèῳᔜfḄxüý¥ᑨV。|ᩩéV¼ὃµâé4ḄÏᐵéV,þPS、û☢¥ᑴ。•88• S5{ÑåÒÓ⊤5.1.1Ḅ▲,üÒÓ|é᪀⌼⌕Ḅû☢y,GÃᵨឋï-cû☢ᢙr²Ah^,ᓽLUÒÓû☢ᎷV,L^LUᐵÝÒÓ×VÕ,û☢ÅL^ëᑮᩞᧇnḄᩩ5ᩭcû☢²Ah^,ᓽ:r0cj0.15As/d(Ú5᫡Ḅ^åᜧZ0.15)Ḅ⌕y,ᢙu²Ah^ᨵ´ᜧḄ0Ë,ᢙr²Ah^aGὃ⇋u^Ḅx8。SÒÓ|ᩩéVy,ᢙr²Ah^G᪷ÊᑡéVc:(1)Su^ ðZ50%Ḅu^²Ah^y,¬Gὃ⇋u^¤ᢙr²Ah^Ḅx8;(2)Su^æZ100%Ḅu^²Ah^y,ᢙr²Ah^pᵫ᫡è¶ᔣ0|;(3)Su^ᙠ50%〜100%Ḅu^²Ah^ y,ᢙr²A^GᙠBÍïY᝱´ឋᑁä。5.1.3᪝┑æᢙuþ5ᙠò⌴᫡Ue᫑☢]E☢Ḅöu^y¡BU¤,~¨ᙠ]E☢VgZ,Þ-U89• eᔠ᫡û☢Ḅ᩽▲ᢙrn9Ú,CDᙠc-Ueᔠ᫡ᢙrnyLὃ⇋ZᦔLḄx8。|ᩩ¡µὃ⇋ZᦔLUe᫑☢ᑁÚᵨḄrëᵨÊḄ-Ue¹?ᔠ᫡᩽▲ᢙrncaÓ。ᵫZUe᫑☢᫡ ᨵϤZ,᩽▲Y᝱yUe᫑☢᫡}ᙠí,-Ueᔠ᫡û☢ᢙrncᑖkïüý:Ue᫑☢ᑁíᙠÍ6 w᫡ᑁíᙠ᫡èᑁ,Ue᫑☢ᑁíᙠÍ6w᫡ᑁíᙠ᫡ῳᑁ,Ue᫑☢ᑁíᙠÊ6þÊw᫡ᑁíᙠ᫡èᑁ,Ue᫑☢ᑁíᙠÊ6þÊw᫡ᑁíᙠ᫡ῳᑁ。|ᩩᡠᑡḄrëᵨ,6-Ueᔠ᫡ᢙrncaÓá´ᔠᳮÙaÓÏᐵ¹´»ᔠḄ(AÓ《-Ueᔠ᫡ᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠ᫑᫡é》ᑴ,2010)。Ue᫑☢☢ccyLὃ⇋²ᡲḄ☢c。ᢥ᯿|é、c#᪗《´᪀é》GB50017、âé4、>´᪀éAISC(«SpecificationforStructuralSteelBuildingsApprovedbytheAmericanInstituteofSteelConstructionCommittee»2005)、ó´᪀é《BritishStanderd:Structuraluseofsteelworkinbuilding》BS5950-3:1990、S.Chen《Loadcarryingcapacityofcompositebeamsprestressedwithexternaltendonsunderpositivemoment》(《JournalofConstructionalSteelReseach》,2005,Vol.61(4):515—530)Ὢ《-Ueᔠ᫡n、U¤÷ÖḄẆ》(LBÜtb,ᓅ):ñᜧE,1994)aÓᑖ¤éᑴÈᡂḄ¹ᐸÏᐵ¹Ḅ23᪷-Ueᔠ᫡Ḅᢙrn¥µ¹c(AÓ《-Ueᔠ᫡ᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠ᫑᫡é》ᑴ,2010)。´»⊤ó,ᢥ᯿|éaÓ•90• cᑮḄ´»5¹´»7Ù´ð(ᙳ7Ùd0.2%,᪗Ùd0.058)。5.1.4|ᩩ¡µ᜜⚜L^Ḅ᩽▲L^Ḅcï-。᜜⚜L^Ḅ᩽▲L^á᜜⚜L^ḄᨵᦔL^ãL^âä,L^âäḄcᑖdᛛឋíᙠᑁ᫡ᑁÍïüý。᪷|éᑴÈᡂḄ¹´»,L^âäḄcaÓá᪷⌱ᵨḄ¼ᦪ¥ᔠ¨Ḅ。ᢥ᯿|é、S.Chen«Loadcarryingcapacityofcompositebeamsprestressedwithexternaltendonsunderpositivemoment》(《JournalofConstructionalSteelReseach》,2005,Vol.61(4):515—530)Ὢ《-Ueᔠ᫡n、U¤÷ÖḄẆ》(LBÜtb,ᓅ):ñᜧE,1994)aÓᑖFÜᑴÈᡂḄ¹ᐸÏᐵ¹Ḅ14᪷-Ueᔠ᫡᜜⚜L^᩽▲L^âä᩽▲L^¥µ¹c(AÓ《-Ueᔠ᫡ᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠ᫑᫡é》ᑴ,2010)。´»⊤ó,ᢥ᯿|éaÓcᑮḄ⚜L^᩽▲L^âä᩽▲L^5¹´»7Ù´ð(ᙳ7Ùᑖd6.3%2.5%,᪗Ùᑖd0.0980.035)。5.2ᢙu²A^c5.2.1cᑁ᜜é}éVᙠ᩽▲Y᝱y,-Ueᔠ᫡ḄᐰMᔣu^pᵫ᫡ῳ²³。|ᩩᡠᑡaÓ5c#᪗《´᪀é》GB50017S。5.2.2Sᔠ᫡²r、uᐳxᵨy,ᔠ᫡ᢙu²A^¡û☢ᡠ²rëḄâ㨦ð,ᦑÃᵨᨬᜧᢚcL^Ḅï-ὃ⇋ᔠ᫡r、u὚ᔠᵨ。5.3᦮³Vc5.3.1|ᩩéVµ-Ueᔠ᫡G¥᦮³VcḄ•91• üý。1᫡~☢rsY᝱UdrY᝱(Îᔣrs¦U¤)Ḅcè,id᦮ᜫ³。ᔠ᫡,SUe᫑☢|©ᐹᨵÓiḄnC,w«þ5ìᐸ5᫡Ḅèᱞ)ᙢþᙠSgy,h{èḄÎᔣÑ,᫡¡ᜫ᦮³V,CDr¹c᫡Ḅ᦮³Vឋ。2rëᵨḄIO¤û☢ᔠ᫡,Êè,◤⌕ὃ⇋᦮³V⚪。ὃ⇋ᐸ^Y᝱5ᓫVIO᫡,wDᐰᙢ¼ὃIO᫡ḄᨬᜧA/h▲。ᡃc#᪗《´᪀é》GB50017dµ¹ᓄcóZLᵨ,´ᔠh¸Gh⍗ᑮḄû☢ᨬᑭÏå·,᪷᫡Ḅ᦮³VÝᦪ,êᙢ¡µ¹c᦮³Vឋy᫡èfᵫZ(A)5ᐸ³{(ᓃ)Ḅ▲,Ó《´᪀é》GB50017—2003⊤4.2.1。½⊤ḄᦪÝ᪷"í¤iæû☢IO¤¹?᫡,S᫡Ḅ³VÝᦪ(^)d2.5(ÏLZ-)(f)(7)Óa——?²ÅḄឋèüÝᦪ,¤¹?H1.0;k——ឋ4sÝᦪ;“b——Ñ{;fi——ë&å,H0.3;Es——ᩞឋiä。(1)u᪀5ḄÁEL^^GᵫÊÓc:T-=ks12(l-^2)X(fe)(8)ᐸk&duyḄ4sÝᦪ,Së¤ZaᜧZ{/iy,1=5.34+4(Aw/a)2;SaᜧBhw´Ly,々sHd5.34。k᜛E,Q345qḄ](u^[r]d120MPa(Hf᪗《Rî᫑᫡•103• ´᪀é》TB10002.2—2005⊤3.2.1,Êx)。DᐰÝᦪH1.72,ᑣrer=l.72X120=207(MPa),¡ᐭÓ(8),Í/iwAw<70,ὃ⇋☢æᑭCO,¼þ0.715Ḅᢚ¦Ýᦪ,ᑣZuAw<50。ᵫDGF:S/iw/~<50y,¤åL^(&==())Ḅ᫡,GþMᔣã<î;ü¤ᨵL^Or。I0)Ḅ᫡,¬Lᢥ᪀⌼OMᔣã<î。(2)r5:¤ZᕜŹ?,Ͳrs-ᔣL^y,ᐸÁEL^ᢥÓ(9)c:0=k-(^)2(9)Ó:々s——4sÝᦪ,kŹ?Ḅᨬð H23.9。Q345qḄ](íᔣL^|>]H200MPa,w`DᐰÝᦪd1.15,ᢚ¦Ýᦪd1.0,ᑣ〜=1.0X1.15X200=230(MPa),ìD ¡ᐭÓ(7),/iwAw<140。ὃ⇋ᑮᐸᑭCO,▲Hd/iwAw<120oôMᔣã<îḄ¸ðZῳË,ᑣ6¡⊤Mᔣã<îḄ¸,a¡⊤ῳË/i,᪷᫑᫡Ḅh¸üý,±dMᔣã<îḄ¸¡ðZῳ0ḄSX,`b=hj.5=0.66/iw。4sÝᦪង=4.0+5.34ia/Ky=4.0+5.34(0.^K/KY=6.32。`rer=ry=l.3r(rdῳḄᙳu^,1.3dDᐰÝᦪ)。rcr=1.3r=,8T^^(l^)2(10)ᵫÓ(10)Mᔣã<îḄ¸da=üᜧZVr2.0m。c⊤ó,ô6>0.5A,ᑣDᐰÝᦪᜧZ1.3,ᓽ#dDᐰ。CD,S120>/iw/iwy,LMᔣã<î,ᐸ¸a=¥g,wLᜧZ2.0m。Vr•104• K3)SS⍝öã<î,Íìᐸᙠèd;tw/5y,ᐸÁEL^d:12(l-^)2(fc)(11)Ó:々b——4sÝᦪ。ᙠMîöîÍᵨy,ìöîZ¸è/iw/5y,GÞ54sÝᦪLëᑮ129(ᢥöîᢙrCÓþÞ5ᙠîᜐB4sὃ⇋)。ὃ⇋ᑮSῳËᜧy,öîèâêìÞ᪀⌼5⁚~Z[,%yGìᐸZ¸èhjiᜐ,ᐸ4sÝᦪì9d93,CDH93¥c。Q345qḄ](íᔣL^[^]H200MPa,DᐰÝᦪH1.4,ᑣOct=1.4X200=280(MPa)。¡ᐭÓ(11),Í:/iwAw=250,ὃ⇋ᑮᐸᑭCO,▲Hdᡠþ,|ééV,S210>/iwAw>120y,◀Mᔣã<î᜜,Q£ᙠ¸èD/5ᜐöã<î。(4)SÍ⍝öã<î,Íìᐸᑖᙠè0.UK0.36/iw▬ê,ᑮËÑå▲d/iwAw<300。ᓽS300>/iwAw>210y,£ᙠ¸è0.UK0.36hwᜐÍ⍝öã<î。6.4.4ã<îLᨵÓiḄC,ÞᐸᡂdῳḄ?。SῳB½sy,ã<îᩩ¬hù²。dµÞ᫡Ḅ᦮³VXdḄÎᔣwD,ã<îᨬ¥ÍÎᡂ¤O(ᱯ◤⌕yaGᓫÎ[)。ᙠῳÍÎᡂ¤OMᔣã<îy,ᐸû☢ÏᐸC⌕Ãᵨc᪗《aî᫑Ë´᪀èᩈ´᪀é》JTJ025—86P1.5.10ᩩPk、£ÍméVḄᑁ]。Cd%RéV}áaîRî᫑᫡éLÆᵨḄh¸ᦪ。SᙠῳᓫÎOã<îy,ã<îḄÏC⌕Ãᵨ•105• c᪗《aî᫑Ë´᪀èᩈ´᪀é》JTJ025-86P1.5.10ᩩPméVḄᑁ]。6.4.5?²ã<îáᢣ᫡Ḅ?5ᜐᡈ´ᜧ)V¤₹AᜐḄMᔣã<î,ᐸᵨáÃ)V¤^ᡈ?5Ö^«ã<îò¡᫡ῳ,ÔÕÞῳ4。?²ã<ᙠῳÍÎ。ᐸ^᝞xíD.,ᙠ?5Ö^ᡈ¤₹AÊ,?²ã<îþxᐸ▬êḄῳᨵGhᙠῳ☢᜜ᜫ³。C¨,yLù²ᐸᙠῳ☢᜜Ḅ᦮³V。ᐸ³VឋᢥíD᪀5³VaÓὃ⇋(ᓽ$=/),üᐸû☢cAᑣᒹ3ã<î☢cã<îÍÎᔜ15X~Xv/235//ykᑁḄῳ☢c。•106• 7ᢙ±³e{7.1S1éV7.1.15Ueᔠ᫡Ḅ^EឋhpᑮÍïᩞᧇᔜfᩞµḄx8,¨w5u^þ5Ḅ⌱ᵨᨵ´ᜧᐵÝ。L⌱ᵨᔠᳮḄu^þ5ù²᫡5Ue᫑☢ᐳx^。7.1.2ᢙuþ5ᑖdCឋþ5ឋþ5。Cឋþ5ᒹ3Ðlþ5、9þ5æ;ឋþ5ᒹ3᪝┑þ5æ。ôÃᵨ᪝┑、Ðl、9þ᜜Ḅ?ᢙuþ5y,£«¹5ᑖ᪆Ù²ÜÞᵨ。ᢙuþ5Ḅ⌱ᵨ¼ὃÊᑡwᑣ:(1)S᫡5Ue᫑☢´ᔠ☢u^Ḅᵨïᔣóy,L⌱ᵨ᪝┑þ5;(2)S᪝┑þ5[«Y,ᡈ¤ᢙuC、ᢙä)ឋhᨵ´Ë⌕y,£⌱ᵨÐlþ5;(3)S¤ᢙuC⌕$Ë,w¹M^ᵨ´ðy,G⌱ᵨ9þ5。x¤ÓḄþ5£ᙠxSû☢UᔠÞᵨ。þ5Ḅ¶ᔣ¸ᙠxSᔠ᫡£Ô«3ï。7.1.3dù²Þᵨ᩽▲Y᝱Ê᫡Ue᫑☢B«ᜧḄϤZ,ᨵr⌕¤Þᵨ▤6᪝┑þ5ᡠ²³Ḅu^¥▲ᑴ。7.2ᢙu²A^7.2.1᪝┑ᢙu²A^⌕x8COdUenæÍ、ឋiäþè᪝┑Ḅᩞᧇn、ឋiäæ(¼Ó《Staticbehavior•107• andtheoreticalmodelofstudshearconnectors》,XueW.C.,DingM,WangH,etal.,JournalofBridgeEngineering,2008,13(6):623-634)。ÔZ¹ᦪᔠ,ᢥ|éÓ(7.2.1-1)Ó(7.2.1-2)c,HὅḄ´ð d᪝┑ᢙu²A^。ᢥ᯿|éaÓcᡠ´»5éᑴÈᡂḄ¹´»¥¤å⊤ó,xUenᑮḄc 5¹åᙠ0.83〜1.35 。c 5ᐸ¹´»AÓ《PBLu^þ5²A^¹》(Õ,1᫥?,"N,aîE,2006,19(6):65—72)《ExperimentalanalysisofPerfobondshearconnectionbetweensteelandlightweightconcrete》(IsabelValente,PauloJ.S.Cruz,JournalofConstructionalSteelResearch.2004,60:465—479)。ᢥ᯿|éaÓcᡠ´»5ᢥ᯿#᪗《´᪀é》GB50017—2003cᑮḄ´»¤åᙠ1.00〜1.11 ,ᙳ d1.06。¹Ẇ⊤ó,᪝┑Ḅᢙu²A^UenæÍ、᪝┑、᪝┑ZḄx8℉。,᪝┑ôᜧ,ᐸᢙu²A^ôË;UenæÍôË,᪝┑ᢙu²A^ôᜧ,᩽▲ZU¤ôð;᪝┑ZôZ,ᐸᢙu²A^ôÚ,᪝┑ḄZLÔ«ᐸḄ6ý。D᜜,ÚkḄ£hÞ᪝┑Ḅᢙuh^ᐙᑖBᢵ。Ëᰚ5,ᐸ²A^᩽▲Z}åÚk5⌕Ë;0ËUe᫑☢ðḄO᳛,Gþ0Ë᪝┑Ḅᢙu²A^,üá¤ð᪝┑Ḅᦔ»Íó。7.2.2ÔZéᑴûÈᡂḄ14ᐳ42VÐlþ5Ḅ¹,¤¹´»èẚiÓḄᑖ᪆⊤ó,Ðlþ5ᢙu²A^⌕x8COdUenæÍ、Ðl、¿ᔣÓèᦪäæ。Ðlþ5Ḅᢙu²A^⌕ᵫÍᑖᡂ:ÐllUeᑖᢙuè¿ᔣÓᢙu。Ðlþ5•108• ᢙu²A^ ᢥ᯿|éÓ(7.2.2)¥c。cᨵẆ⊤ó,UeḄᢙun5ᢙ¹nêᕈ´ឋᐵÝ,CDUenÃᵨ/t¥c。Íὃ⇋ᑮÐl¤lUeᙠÎᔣèüᵨ,¿ᔣÓ¤Ue¿ᔣU¤aGþgᑮèüᵨ,ÞlUeᜐZ°ᔣèüY᝱。CDÔZþ5¹´»,Ãᵨὃ⇋°ᔣèüḄUeᢙun0ËÝᦪ《¤Ueᑖ²A^¥。ᢙun,¼᯿ᩞᢙuncï-,ᢥÓ/vd=0.577/d¥c。ᢥ᯿|éaÓ¤éᑴÈᡂḄ¹ÐlḄᢙu²A^¥¹c,c 5ᐸ¹´»[¼ÓÕ《PBLu^þ5²A^¹》(《aîE》,2006,19(6):65—72)IsabelValente《ExperimentalanalysisofPerfo-bondshearconnectionbetweensteelandlightweightconcrete》(«JournalofConstructionalSteelResearch»,2004,60:465—479)]Ḅ¤å⊤ó,c 5¹åᙠ0.7〜1.67 ,ᙳd1.07。7.3ᢙ±³e{®,7.3.1〜7.3.3|⁚éVá¼᯿Ïᐵéè᪝┑Ḅä)⌕ᑴḄ。ä)₹AiS1ᑖd°。₹AiIᵨZ᦮᪀5Ḅå▲ä)õC¹c,₹AinᵨZ᦮᪀5ḄÞᵨä)¹c,₹AiinᵨZ᪀5Ḅä)¹c。S1±d,S₹AᵨÊXL^UᓄḄKQᦪhÒÓrz>lX108,᪀5ÒÓå▲ä)õCḄ⌕;S₹AᵨÊXL^UᓄḄKQᦪhÒÓnᙠ2X106〜5X106,᪀5ÒÓÞᵨḄä)õC⌕。ᢙuþ5Ḅ^Z᦮᪀5Ḅ^,LÃᵨä)₹AiI¥å▲ä)õC¹c,ᡈÃᵨä)₹Ain¥ÞᵨḄä)õC¹c。•109• 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Ḅ7´^è᥅5ᵨ,wὃ⇋rë,UeÐ÷Ḅx8。7.4.5ᵫMᔣu^VgḄE☢¶ᔣu^,Gᢥᩞᧇ^EÏᐵaÓc。ᵫ⚜L^ü¤7)^、UeᦈU¤ᡈÂÙVgḄ¶ᔣu^,ᵫâᡈ7)ᜐZkᑁḄþ5²,ÍᎷV½¶ᔣu^ÆL´ឋᑖ[,ᓽᙠâdVt,ᙠ¸âLᜐd0。ᔜ餶ᔣu^cò⌴ZᨵxḄéV,|é5ᑁéS,wùᙢÃᵨ᫡¸51/10᫡ZḄ´ð 。7.4.6Ue᫑☢Ḅ¶ᔣᢙu²A^ᵫUe¿ᔣÍᑖᡂ。xy,¤UeḄuL^ö¥µ▲ᑴ,þ■{Bᾪឋẚ。7.5ᢙuþ5Ḅᦪäc5[7.5.1〜7.5.3ᢙuþ5Ḅᦪäù²µᛛឋ᩽▲Y᝱ÊUe᫑☢5᫡ Ḅu^ò⌴。SVu,6ᑁ,þ5Ḅ²Ah^ᜧZUe᫑☢ᡈ᫡Ḅ¶ᔣᡈ¹²A^。rë,6,Ue᫑☢ᜐZ¹Y᝱,þḄ¶ᔣu^pὃ⇋ᜧZUeᑁḄ¶ᔣ¹²Ah^。u^5ᦪEḄV,¤Zᵨ,GÃᵨrëᑖ[«¥uᑖ,,ÍVu^5Vᦪ;¤ZbAᵨ,◤⌕ᑖÃᵨrëᨬᜧᨬð Ḅᒹî«¥ᑖ,,ᑖcᔜV,÷ᑁᡠ◤Ḅu^5Vᦪ。ᨬìHxᒹîᑖ,u^5VᦪḄᜧ。þ°þI᫡d·(«3)¥9ó。᪷rëᨬᜧᒹî´Vu^5ḄᦪE᪷rëᨬð ᒹî´Vu^5ḄᦪEnMminU),ᨬìu^5Ḅ[HÍὅḄᜧ,ᓽwf=max{?iMmax(:c),wMmin(o:)}。•112• d3³å᫡°èᒹød7.5.4rë,6,ὃ⇋þ5ᕜkḄUeèüᵫZÐ÷¨9Ú,þ5Ḅᢙu²Ah^Lbþᢚ¦。7.5.5ὃ⇋þ5ᙠZèSVḄU¤h^,þ5ᐹᨵSVḄ¶ᔣu^Sᑖ[h^,SVu,6ᑁḄᦪäGᙳᑖ[。7.5.6Ue᫑☢5᫡þḄâ,ᙠᦈ、ÂæᵨÊ,ᨵ´ᜧḄ¶ᔣu^。%RÑḄ¶ᔣþL¥ãn。•113• 8᪀⌼⌕8.1Ue᫑☢8.1.3|ᩩéV⌕þUe᫑☢Ð÷ᑁ^dÔ,Íὃ⇋Ue᫑☢ᑁ5᫡Ḅᨵᦔᐳxᵨ,5Üᑡ᪝┑᪀⌼⌕Sg,0☠êÎᦪäḄ⌕,|éᨵᕜZ᳛⌕,jéᨵ¸⌕,EḄᙳáâã5UeḄÄ"^þèUe᫑☢5᫡ 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