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'UDCᐳ᪗GB50917-2013-UeᔠéCodefordesignofsteelandconcretecompositebridges2013-09-062014-05-01ᐳ#ᐳṓ!
ᐳ#᪗-ᔠ>CodefordesignofsteelandconcretecompositebridgeGB50917-2013:ᐳᢇ:ᐳ:20145ᨴ1ᑜ᱐"2013ᓅ#
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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^▲Yc..........................................................(23i.lᢙ°¥7s,.......................................................................(231.2ᢙ±¥7s,.......................................................................(28i.3å¬Ý,............................................................................(29Þᵨ▲Y¹c..........................................................(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)7.4é☢´µᔣᢙ±,.................................................(46)7.5ᢙ±³e{Ḅᦪ,c.................................................(49)8᪀⌼⌕.......................................................................(52)8.1é☢´............................................................................(52)8.2..........................................................................................(54)8.3ᢙ±³e{............................................................................(54)8.4ᐸi᪀⌼⌕¸............................................................................(55)▬BAᔠÎ4sḄឋÁErëc..................(56)▬BBÔZᨵᦔឋiäḄã₹A-.........................(58)▬BCÞ¦ᔣḄ⚜L^ᔠᢰcï-.......................................................................(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-UeᔠḄMᔠDᐰG☠、〉ᵨὊ、ᢈÂᐜ¥、¬FᔠᳮḄ⌕,ᑴV|é。1.0.2|é〉ᵨZ⍝îᓫᜧZ120mḄÓ-UeᔠḄ。|é〉ᵨZÃᵨᱯïUeḄᔠ。1.0.3|éÃᵨþᭆ᳛ᳮÙdÔẠḄ▲Yï-(ä)c◀),ᢥᑖ⚗ÝᦪḄ⊤ëÓ¥。1.0.4-Ueᔠ◀LMᔠ|é,VLMᔠ#cᨵᐵ᪗ḄéV。
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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-UeᔠḄ´᪀L᪷´᪀¤Ó、^ᱯ、þïÓèᡠᜐᩩ5ᔠᳮ⌱ᵨᩞḄ1µäæÍ。3.2.2-UeᔠḄᩞGÃᵨQ235、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
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⊤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^-UeᔠḄ⚜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•
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I⊤3.4.3ï/pk/pd/pa1470100015701070`◀L^Ä4101720120018601260540450785650{j40093077010808903.4.4å7´⚜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-UeᔠL¤ᐸ᪀5èþ5¥Êᑡ¹c:1ᢥ²Ah^▲YḄ⌕¥ᢝYýèᏔᯠYýḄ²A^、³Vc。2ᢥÞᵨ▲YḄ⌕¥ᢝYýḄᢙ÷ឋ、L^、ᢰ、³V¹c.,þèὊឋ。3ᢥᨚYý´᪀^YḄ⌕¥æýḄ¹c。4.1.2-UeᔠḄÔLd100。4.1.3-UeᔠḄÞᵨ▲Lᢥ⊤4.1.3Ãᵨ。⊤4.1.3-éᔠḄ,²ᵨ?▲Þᵨ▲()130ð250、S⌕ð3100ᱯᜧ、ᜧ、S⌕R:¤ᨵᱯ⌕´᪀ḄÞᵨ▲,GᙠBéVÔẠ¬ᢈ¬FÙ²Übþ¯。4.1.4-UeᔠḄGÃᵨO¤ᡈ9¤æû☢¤Ó,Ue☢GÃᵨc5ᡈ⚜ᑴ,þ5GÃᵨ┑、Ðlᡈ9æ¤Ó。•14•
4.1.5-Ueᔠ☢Ḅᨵᦔ{6。LMᔠÊᑡéV:1ᔠᔜè?5ᜐḄUe☢ᨵᦔ{(«4.1.5)LᢥÊᑡaÓc,wLᜧZUe☢h▭{:6C=60+IX(4.1.5-1)6ci=Lc,:/6<6,(4.1.5-2)Ó4。——ῳïᨬÎu^þ5D¸(mm);bci—ῳSÎḄUe☢ᨵᦔ{(mm)。ᐸb,dᨬÎu^5DàÏeῳïḄᨬÎu^5D¸ḄSXᡈᨬÎu^5DàUe☢fᵫÅḄ¸;LCtl——æᦔ(mm),¹?LHc,þILᢥ«4.1.5(a)⌱H。2¹??þIÅ?ᜐḄUe☢ᨵᦔ{6。LᢥÊᑡaÓc:6c=6o+SA6cl(4.1.5-3)»=0.55+0.025LCll/6l4.2.1-UeᔠḄDᐰæÍL᪷´᪀ḄS⌕ឋ、´᪀ẚGhXÜ»ḄtSឋᢥ⊤4.2.1Ãᵨ。⊤4.2.1-éᔠ,gᐰZÍDᐰæÍ´᪀—ÍS⌕´᪀ᱯᜧ、ᜧ、、S⌕ðÍS1´᪀ðR⊤ᡠᑡᜧ、、ðÝᢥc᪗《aîËᵨé》JTGD60ḄᓫlV,¤ZLæ,þᐸᨬᜧd;|⊤sþ“S⌕”Ḅð,Ýᢣ0laîSÍaî、■aî、*ºlî、õî]ᱯùÿḄ*QõîḄ。2¤ᨵᱯ⌕Ḅ,ᐸDᐰæÍG᪷ᐹüýkV。4.2.2-UeᔠḄ²Ah^▲YcLÃᵨÊÓ:y0Snd4.5.1-UeᔠC⌚³VcLÃᵨÊÓ:7qfSsk0.5y:h0^376ty,13fl—IV:VffyS£T<0.5y:Ao.^34/345~77^TvXR:⊤adËḄå·Ýᦪ,GêÃᵨÊᑡᔜÓc:rëᵨ,6,ᛛឋíᙠû☢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—ᑖdè、Êè☢ciAs-,Ḅû☢☢c。5.1.2ᛛឋï-c-Ueᔠny,ᙠÊᑡÑGèrë5u^ḄÏîx8:1rëᵨḄᔠû☢;2rëᵨwArt/yðZ0.15As/dḄᔠû☢(Artdrë,Ue☢ᨵᦔ{kᑁ¶ᔣḄû☢☢c)。5.1.3ᛛឋï-crë,-UeᔠḄᢙr²A^y,LMᔠÊᑡéV:1ᛛឋíᙠû☢ᑁ(«5.1.3-1),ᓽ/^+ᜎ;As/a+Aptv,##,ᢙr²A^LMᔠÊᑡaÓ⌕:ᛛឋí(«)/d⚜L^^p^pi^dd5.1.3-1ᛛឋÐᙠᑁ^ḄᔠÒ☢nbsd¦Acl—Ue☢ḄÑ;Ae2—Ue☢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——Ue☢Ḅû☢☢c(mm2);Asc——,Ḅû☢☢c(mm2);Ap——⚜L^Ḅû☢☢c(mm2);Ar—ᛛឋíÎUe☢ᑁ¶ᔣḄû☢☢c(mm2);As——Ḅû☢☢c(mm2);3^1—Ue☢,û☢¤Dà¹,û☢¤DḄ¸(mm);—,û☢¤Dà¹,û☢¤DḄ¸(mm);%—⚜L^Ḅû☢¤Dà¹,û☢¤DḄ¸(mm);3;4—Ue☢ᑁ¶ᔣḄû☢¤Dà¹,û☢¤DḄ¸(mm);ffpu,d——⚜L^Ḅ▲L^(MPa),ᢥ|éP5.1.4ᩩc;/cd——UeḄᢙn(MPa);/c——ᩞḄᢙ¹n(MPa);/sd——Ue☢ᑁ¶ᔣḄᢙ¹n(MPa);’——u^þ;nr-----Vu,Ḅᢙuþ5ᦪE,u,ḄVÓ|éP7.5.2ᩩ;NI-----Vᢙuþ5Ḅᢙu²A^(MPa),ᢥ|éP7.2⁚ḄᨵᐵaÓc。•26
2ᛛឋíᙠUe☢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-UeᔠL᪷Þᵨ▲Y⌕¥ᨚYýᢝYýḄc。6.1.2ᢥᢝYýy,L¤-UeᔠḄû☢L^、ᢙ÷ឋ、÷Ö{ᢰ¥c;ᢥᨚYýy,L¤-UeᔠḄû☢L^¥c。ᔜ⚗c LÒÓ|ééVḄÏL▲。6.1.3-Ueᔠឋ▤6cGÃᵨÊᑡÔ|ᎷV:15UeᩞᧇᙳdᳮÆḄ´ឋ;2ᔠrsy,Ue☢û☢5û☢ᔜfMᔠû☢ᎷV,ᩞᧇc~×VÕ。6.1.4ឋ▤6cG᪷5Ueឋiäå71。¥û☢ᣚc,ìUe☢ᣚcᡂû☢Üᢥᩞᧇ^EaÓcL^,ᣚcPÜUe☢SDËLùᢝU。ᙠZ₹AᵨÊ,UeUḄx8¥û☢ᣚcy,ឋiäåGᵨᨵᦔឋiäåA¡a。5Ueឋiäån。ᨵᦔឋiäå&ḄVLMᔠ|éP6.2.3ᩩḄéV。6.1.5c_UeᔠḄᢰL^yLz·Ḅx8,ÍLᐭUeU、ᦈþèÂæᵨḄᦔL。6.1.6c-UeþIᔠḄᢰy,ᙠrë,,Gᢥᨵᦔ{ᑁḄᐰû☢c;ᙠrë,,G᪷UeḄÐ÷üýᐭUe☢Ḅx8。6.1.7þI?UeḄ÷Ö{Gᢥc᪗《aîUeè⚜L^UeËé》JTGD62ḄíD•31•
¹᪀5¥¹c。6.2L^¹c6.2.1-Ueᔠr᪀5ᙠrëè⚜L^ᵨÊXḄUe☢è-ᔣL^GᢥÊᑡaÓc:Ue☢⚔L^:(6.2.1-1)72。JoWoioÊèL^:(6.2.1-2)io-/ioioÓ-Ue☢⚔L^(MPa);-û☢rë(N•mm);n0---ᩞឋiä5UeឋiäḄå,W()=f:s/£:cJo——Ue☢5ᔠû☢Ḅᣚcឋë(mm4);3/c——Ue☢⚔àᔠឋíḄ¸(mm);txe——⚜L^ḄឋL^(MPa),Gᢥ|éP6.2.2ᩩc;Ap——⚜L^Ḅû☢☢c(mm2);A0——Ue☢5ᔠû☢Ḅᣚc☢c(mm2);e——⚜L^¤DÑàᣚcû☢ឋíḄwD¸(ᔣÊd)(mm);cts——ÊèL^(MPa);%——ÊèàᔠឋíḄ¸(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——ᔠc(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-Ueᔠû☢¹cy,Lᐭ5Ue☢´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,᪷Ue☢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)。þ95ḄØÖLᢥ²½þ5Ḅᢙu²A^Ne¥c。7.3ᢙ±³e{®,7.3.1ᢙuþ5L᪷ÊᑡaÓ¥ä)¹c:7FfANp0.(7.4.2)Ó:——ᓫÑZUe☢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´ᙠᢙuþ5þḄᨬZH(mm);/sd—¿ᔣḄᢙ¹n(MPa)。⊤7.4.2ᓫÑZ¿ᔣḄû☢c6uᑗ☢a—ab—bc—cd—dAeAb+At2Ab2(Ab+Abh)2Abh7.4.3²☢´ᔠ☢¶ᔣu^Ḅ¿ᔣᙠuᑗ☢ḄZLÒÓ7)ZḄ⌕;±¿ᔣ¸LᜧZþ5Ô¿ᔣËḄ4ý,wLᜧZ600mm。7.4.4-Ueᔠ²ᡲèUe☢¶ᔣE☢u²A•47•
^cLMᔠÊÓ⌕:Vid^ViRd(7.4.4)Ó:Vld——¤ᡂᔠᵨþÜ,ᓫÑZᑁUe☢ᔜ¶ᔣuE☢Ḅ¶ᔣu^(N/mm);V1Rd—ᓫÑZᑁᔜ¶ᔣuE☢u²A^(N/mm)07.4.5¤ᡂᔠᵨÜ,ᓫÑZᑁUe☢ᔜ¶ᔣuE☢Ḅ¶ᔣu^VldLMᔠÊᑡéV:1ᓫÑZᑁa—a¶ᔣuE☢Ḅc¶ᔣu^:Vld=max|y17,1^7(7.4.5-1)2ᓫÑZᑁb—b、c-cèd-d¶ᔣuE☢Ḅc¶ᔣu^:Vld=Vi(7.4.5-2)Ó:bc——Ue☢Ḅᨵᦔ{(mm);b,、b2—Ue☢ÍÎᙠa-aE☢þḄᨵᦔ{(mm),Ó«7.4.1;Vi——¤ᡂᔠᵨÜ,ᓫÑZḄ5Ue☢ḄE☢¶ᔣu^(N/mm)。3ᓫÑZḄE☢¶ᔣu^LᢥÊᑡ⌕¥c:1)ᵫMᔣu^VgḄᓫÑZḄE☢¶ᔣu^:Vi=V^Soc(7.4.5-3)Jo2)ᵫ⚜L^ü¤7)^、UeᦈU¤ᡈÂÙVgḄ¶ᔣu^:⚜L^üᙠ7),7)PÜᙳò⌴¶ᔣu^:V^X1(7.4.5-4)^cs⚜L^üᙠ7),7)P(⚜L^ᵨ,6)ò⌴u^ᡈâ7):•48
Vi=j1(7.4.5-5)^csÓ——¤ᡂᔠᵨÜ,ᵨZᔠḄMᔣu^(N);Vt——ᵫ⚜L^ü¤7)^、UeᦈU¤ᡈÂÙḄ¸ᦔLᙠUe☢XḄ¶ᔣu^(N);S0c——Ue☢¤ᔠû☢íḄ☢cë(mm3);Io——ᔠû☢ᣚcû☢ឋë(mm4);/cs—UeᦈU¤ᡈÂÙVgḄ¶ᔣu^cò⌴Z(mm),H¸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´ᙠᢙuþ5þḄᨬZH(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,6ᑁ5Ue☢]E☢Ḅ¶ᔣu^(N);•49
Nl——ᓫVþ5Ḅᢙu²A^(N)。7.5.2u,ḄᑜᑖLþrë&¤ᨬᜧèærëdE▲⌲6¥(«7.5.2)。d7.5.2³å±ÂÒᑜᑖd7.5.3Vu,6ᑁ5Ue☢]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——Ue☢Ḅû☢☢c(mm2);/cd—UeíDᢙn(MPa)。2ÑZrë,6Ḅu:Vs=Art/sd(7.5.3-2)Ó:Art—rë,Ue☢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。ᓫÑZḄE☢¶ᔣu^Lᢥ|éP7.4.5ᩩḄéVc。•51
8᪀⌼⌕8.1é☢´8.1.1Ue☢Ñ£ðZ180mm,᪷◤⌕G²ᡲ。Sᨵ²ᡲy,LMᔠÊᑡéV(«8.1.1):1²ᡲËh£ᜧZUe☢Ñ/^Ḅ1.5ý。2²ᡲ⚔Ḅ{6。£ðZè{6t51.5ý²ᡲËL。3²ᡲÅàᢙuþ5ÎḄ¸ðZ40mm。4²ᡲ¤¨9Lᙠᵫþ5᪷gḄ45°Ø´ḄE▲þ。5²ᡲ¿ᔣḄÊö6Lᙠ¸è50mmḄkᑁ;ᢙuþ5ᢙᣬgâ±☢Ë¿ᔣḄ¸&ðZ30mm;¿ᔣ¸LᜧZ4/ie,wLᜧZ600mmod8.1.1ᔠḄÒ☢¦ñ8.1.2-UeᔠÅUe☢Ḅ᪀⌼LMᔠÊᑡéV(«8.1.2):1ᨵ²ᡲy,¸Z£ðZD。•52•
^hC2«8.1.2Å᪀⌼«2å²ᡲy,LxyÒÓ¸D´ðZ150mm、¸èÅðZ50mmḄ⌕。8.1.3rë,Ue☢¹û☢O᳛LðZ1.5%。Ê6û☢c£ðZû☢³û☢cḄ50%。8.1.4ᔠḄâèþIᔠ?▬ê☢ᑁ,£ᢥÊᑡ⌕²³UeᦈÂÙL^Ḅ2ᔣᑖ[(«8.1.4):h´[ᙠ☢ឋíïÎ☢Ḅ¸ïᔣᦈ,ã´[ᙠ#☢ឋíÊïΫ8.1.42ᔣᑖ[[«1k£dῳ¸Ḅ50%〜100%。2ḄZ£êḄᐰ{,£ðZ16mm,¸£ᜧZ150mm。3£[ᙠ☢Ḅû☢ឋí▬ê。4ḄïᔣL5Ḅ¸ïᔣS。•53•
8.28.2.1ḄèÑLðZ16mm,ῳÑLðZ12mm,ᡠᵨÑLðZ4mm。8.2.25Ue´ᔠḄè{ðZ250mm,ÍLᜧZᐸÑḄ24ý。è5ῳḄ£ÃᵨᰚÄTOØÖ。8.2.3ᙠḄÍâL[¿◞ᡈ¿ᥛµ,ᐸ¿◞ᡈ¿ᥛµḄ[Ñ£᪷^ᑖ᪆V。8.3ᢙ±³e{8.3.1ᢙuþ5ḄLMᔠÊᑡéV:1┑þ5┑ᜮÊ⊤☢ᡈ9þ5èÊ⊤☢Ë☢±⚔☢£ðZ30mm。2þ5ÆïᔣḄᨬᜧ¸£ᜧZUe☢(ᒹ3²ᡲ)ÑḄ4ý,wLᜧZ400mm。3þ5ḄÎÅ5èÅḄ¸LðZ30mmo4þ5ḄÎÅàUe☢ÅḄ¸LðZ100mm。5þ5⚔☢ḄUeùN6ÑLðZ15mm。8.3.2┑þ5◀LÒÓ|éP8.3.1ᩩḄ⌕,VLMᔠÊᑡéV:1S┑Ѥῳy,è²¹^,ᑣᩚᩚLᜧZèÑḄ1.5ý;è²¹^,ᑣ┑ᩚLᜧZèÑḄ2.5ý。2┑ZLðZᐸᩚḄ4ý,Í£Ô«ᐸᩚḄ6ý。3┑Æí´ïᔣḄ¸LðZᩚḄ6ý;ᚖZí´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。4Ðl5ḄLÃᵨ"☢ØÖ。8.3.49þ5GÃᵨQ235,û☢£ᜧZ[12.6。8.4ᐸi᪀⌼⌕¸8.4.1-UeᔠL᪷´᪀Ḅᱯ,´ᔠᙬᜐḄᩩ5,~´᪀ḄὊឋ?¥᪀⌼。8.4.2´ᔠ☢ᙠ5/(ᡈD)Ue☢PLñ◀R┤、p、y6、c:、deᐸᩖᱥ。8.4.3´ᔠ☢Å30mmkᑁL¥■ῖæ。8.4.4S☢Ãᵨ⚜ᑴUe☢y,LÃHÞ⚜ᑴ5Y,ÒÓ■ö⌕。55•
▬hAᔠ ¡¢Ḅ£ឋ¤¥¦§>A.0.1ᔠÎ4sḄឋÁErë£Ãᵨᦪ ᑖ᪆ï-c。A.0.2ᔠÎ4sḄឋÁErëGÃᵨឋèüᩚi(«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„-ᔠÎ4sḄឋÁErë(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—ᓫÑZḄ¦èüC(N/mm2);——ᓫÑ{ῳ☢Ḅû☢ឋë(mm)K——èu^DḄ¸(mm)K——ῳÑ(mm);bsh,tsh——ÊèḄ{Ñ(mm)。(a)æç°èᵨḄᔠ(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:1ᎷV5Ueåþ,Ue☢ᙠÂ、ᦈæᵨÊXfᵫ¤Ue。。2᪷Ue☢ḄLUèᨵᦔឋiäã₹AP。;ì½ã₹AP。ÖᔣãZUe☢¤D,ÞUe☢ឮפU3ឮ×5Ue☢Ḅþ,½P。,û☢L^。4ìþ3VFHḄL^¥ã。B.0.3ᔠû☢ᔜÑᜐḄL^âäGᢥÊᑡaÓc:Ue☢û☢:Ao-c=—-T-5-+Y^yc°L1—4^(B.0.3-1)WlL^ioL-*0L」Acû☢: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);—Ue☢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—Ue☢¤DàᣚcíḄ¸(mm);Ecg,—ὃ⇋Ux8yᵨḄᨵᦔឋiä(MPa);eo——ᔠUe☢¤DᜐᙠGyḄ¸LU;nL——5UeḄᨵᦔឋiäå;n0—5UeḄឋiäå;♦dt,T)—UeḄUÝᦪ;0L——ᵨḄUC,H1.1;—ãAÁdcὃ⇋ÁdtḄUeUÝᦪ。UÝᦪᨬì G᪷Ue☢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:ᎷVÂUᓄÜᔠḄÂS,èüL^âäpd5UeᵫZ᳛xḄU¤Ù。P0=EcAcA^(as—ac),M0=P0y0c(B.0.4-6)2)ë¤ÂÙ:ᓽᎷVÂS、Ue´᪀ÂS。P0=ECAC(tsaa—tcac),M0=P0y0c(B.0.4-7)3)¤ÂÙ:¦ᣚḄã₹ALᢥcᑖaÓ,ÍLMᔠc᪗《aîUeè⚜L^UeËé》JTGD62ḄÏᐵ⌕。•60•
▬ìCÂïcÕᔣÇḄå⚜bsᔠᢰ,ÏC.0.1¤Zå¦ᔣḄ⚜L^ᔠḄU¤c,þ°ᢚ´¤[¤Ód·(«c.0.1),ᐸᢰGᢥÊᑡaÓc:/=/o+/s+/x+/e(C.0.1-1)—(4Z?-L2)cosd](C.0.1-2)Ó—"ËUᓄVgḄᔠᢰ(mm);Ae---"ËUᓄä(mm);fo、fs、/TBcï-Ó|éP6.3⁚。dC.0.1ᙳ₹7ᵨ£ÝÞᔠḄ,ci1SUe☢;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☢ᜐᔠḄMᔣÑ(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,¤#,¤⌕tuxḄᵨ89óÊ: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”。2ᩩᦻᢣóLᢥᐸᨵᐵ᪗Ḅᑏ-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《´᪀ᵨuËnþ》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《aîËᵨé》JTGD60《aîUeè⚜L^UeËé》;[TGD6266•
ᐳ#᪗-UeᔠéGB50917-2013ᩩᦻ9ó
ᑴ9ó《-Ueᔠé》GB50197—2013,¬20139ᨴ6þP1441abᢇB[。-UeᔠᵫZhᐙᑖBᢵᩞ5UeᩞᧇᔜfḄd,ᙠᡃᑮµ®ḄLᵨ。ᯠ¨EPᑁVᨵ┐¤-Ueᔠᙠ´᪀LᵨḄé,caîé-UeᔠḄᩩᦻ*Íᙠ《aîË´᪀èᩈ´᪀é》JTJ025—86,Ãᵨ](L^ï-,¡,w5c᪗《aîËᵨé》JTGD60Ḅ³⌕?S,%Þ-UeᔠḄd;ឋhᙠ´᪀ḄLᵨᑮSVḄ▲ᑴ,%aáᑴ|éḄÒ/ᡠᙠ。|éᙠᑴ«,ᑴ¥µ®Ḅ¯°Ẇ,±²³´µh¸¬¹,xy¼ὃµᨵᐵ▭᪗ᐜ¥᪗。dóZᜧ、、ºẆæᓫÑᨵᐵᕒᙠÞᵨ|éyhᳮᩩᦻéV,《-Ueᔠé》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^▲Yc..............................................................(85).3Þᵨ▲Y¹c..............................................................(86).4ᢝYýèᨚYýL^¹c....................................................(86).5⌚³Vc.................................................................................(87).6ä)c......................................................................................(87)²Ah^▲Yc................................................(88).1ᢙr²A^c............................................................................(88).2ᢙu²A^c............................................................................(91).3³Vc.................................................................................(91)Þᵨ▲Y¹c..............................................................(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)7.4é☢´µᔣᢙ±,.................................................(111)7.5ᢙ±³e{Ḅᦪ,c....................................................(112)8᪀⌼⌕..........................................................................................(114)8.1é☢´..................................................................................(114)8.2................................................................................................(115)8.3ᢙ±³e{..................................................................................(115)8.4ᐸi᪀⌼⌕¸..................................................................................(116)▬BBÔZᨵᦔឋiäḄã₹A-.................................(117)▬BCÞ¦ᔣḄ⚜L^ᔠᢰcï-...........................................................................................(118)•72•
ᑣ1.0.1-Ueᔠᙠaî、*/¬ᑮ®ḄLᵨ。caîé-UeᔠḄᩩᦻ*Íᙠ《aîË´᪀èᩈ´᪀é》JTJ025-86,Ãᵨ](L^ï-,¡,w5c᪗《aîËᵨé》JTGD60Ḅ³⌕?S。dµÞ-UeᔠḄ´᪀#ᐹᨵºEឋ、ᐜ¥ឋèᔠᳮឋ,³´ᳮÙẆh¸¬¹,Íᢥ᯿´᪀³ឋéḄ⌕¥-UeᔠéḄᑴᐹᨵr⌕ឋ。1.0.2|éþc#᪗《´᪀G☠ឋUS᪗》GB50153éVḄwᑣᑴ,〉ᵨkdaî、*(Uid⍝îḄ),5EPaî、*ÃᵨḄ´᪀éḄ〉ᵨkáSḄ。ÔZh¸¬¹,〉ᵨVd120m。⍝],ᵫZᐸᱯ¤´᪀Vᨵᐸ⌕,G¼᯿Þᵨ。|é〉ᵨZᱯïUeḄᔠ,a〉ᵨZᔠḄã)。|ééVḄ-UeᔠÝᢣᵫUe☢O¤ᡈ9¤æ«ᢙuþ5´ᔠ¨ᡂḄᔠ。|éḄéV〉ᵨᐸû☢¤ÓḄᔠ´᪀(´᪀ᒹUeᡈUeᒹ´᪀)。1.0.3ᢥ᯿▲Y-¥ác#᪗《´᪀G☠ឋUS᪗》GB50153ḄÔ|⌕。▲Yᑖd²Ah^ÞᵨÍ。²Ah^▲YçèḄ´᪀Dᐰ,ᒹ3᪀5èþn、ä)、´᪀³Væ;Þᵨ▲YçèḄÞᵨᩩ•73•
5èὊឋ,ᒹ3´᪀ḄU¤、ᢙ÷ឋæ。´᪀ÒÓÍï▲Y,ù²µ´᪀ḄDᐰឋ、〉ᵨឋèὊឋ,Þ´᪀ÒÓG☠ឋḄ⌕,ëᑮᐰ⚜VḄgh。þᭆ᳛ᳮÙdÔẠḄ▲Y,ᙠÔᑁ´᪀ḄG☠ᢣ᪗ÒÓE᪗ᢣ᪗,´᪀DᐰáᢣᙠUÔᭆ᳛Ò/ḄDᐰ。1.0.4◤⌕ÒÓḄᐸÏᐵéᵫ|éḄ〉ᵨkᡠV,aîḄᔠḄ◤⌕ÒÓaîéḄ⌕,*ᔠḄ◤⌕ÒÓ*éḄ⌕。74
2°±Âäᑡµ5ᔠÏᐵḄÝឋÂä,þëᑮᭆ5⊤ëUSḄEḄ。M1ᢥᩞᧇឋh、ᵨ5ᵨᦔL、cÝᦪæKVᑖᑡ。M1¼᯿aîé,þëᑮÞᵨFḄSឋ。75
3ᩞᧇ3.1Ue3.1.1ᢙn᪗Ýᢣ5ᵨ᪗ï-ᑴ、YNà28dÁ,þ᪗¹ï-ÞḄᐹᨵ95%ù²᳛Ḅᢙn(þMPa)。UenæÍdÅZ150mmḄªïᢙn³ᑖ[ᙳ ¦¯1.645ý᪗Ù(ïÙ)Ḅ,PsC,áUeᔜ⚗^Eᢣ᪗ḄÔ|¡⊤ 。3.1.2⌕^Ue᪀5S1Ýᢣ☢,᪷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^UeËé》JTGD62ḄHS。3.1.5Ueឋiäxc᪗《aîUeè⚜L^UeËé》JTGD62ḄH。3.1.6UeḄᐸᱥᳮ^Eᢣ᪗(uᑗiä、ë&å、´Ýᦪ)xc᪗《aîUeè⚜L^UeËé》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。¤Z´᪀ᵨḄᩞ,ᵫZL^öË、^×ᩖ、^ᵨᜧæCO,ᩞḄ1èµäæÍ◤⌕┐¤´᪀Ḅᱯ¥ᓛO。ᩞḄµäæÍ,⌕áᩞḄឋᢣ᪗,Öᩞឋ¤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⌕G¼Ójé《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〉ᵨ´᪀ᱯḄÝᵨᩞ᪗。¤ZÞᵨ▲d100ḄᔠḄ´᪀ᩞᧇ£Ãᵨᵨ´᪀。ᩞḄná᪷▲YÊG☠ᢣ᪗⌕Ḅ、ßᩞᧇᑖ⚗ÝᦪḄc。(1)ᢙ¹、ᢙᢙrn/dáþᩞḄ4cdÔẠ◀þᩞᧇᢙ^ᑖ⚗ÝᦪnÍH5Ḅýᦪ¨。ᩞ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|ᩩéVµÃᵨËnᵨZ᥅5þḄᩞᧇ⌕è⚜¹^。•78•
3.2.6dᢙuþ5Ḅ┑,ᐸឋh5£ᨵᐸóᱯVḄ⌕,LÒÓc#᪗Ḅ⌕。3.2.7ᱥᳮឋháᩞḄÔ|ᢣ᪗。ᐸ,ᔠ5UeᙠÂᵨÊᵫZxḄ´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¤3.4.1ᔠḄ⚜L^S1ᑖdUe☢ᑁO5OÍïïÓ。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▲YÊḄL^ᨵᐵ。S1•79•
±d,ᑁOḄ⚜L^ᙠ▲YÊhëᑮᐸ4c(ᡈᩩ54c),ᡠþᑁOḄ⚜L^ndᩞᧇ4c◀þᩞᧇᑖ⚗DᐰÝᦪ。¨´þ᪗nḄ0.85ýdᩩ54c,ᦑᐸnd᪗n¼þ0.85Ü◀þᩞᧇᑖ⚗DᐰÝᦪ1.25。᪗n(▲n)d1860MPaḄ¨´,ᐸnd1860X0.85/1.25=1264.8(MPa),Hd1260MPao{j᪗nᓽd4c,ᦑnd᪗n◀þᩞᧇᑖ⚗Ýᦪ(1.20),᪗nd785MPaḄ{j,ᐸnd785/1.20=654.2(MPa),Hd650MPa。|éḄH 5c᪗《aîUeè⚜L^UeËé》JTGD62S。◤⌕9óḄá,¤ZOḄ⚜L^ü(ᡈᑁḄå7´),ᵫZᐸ▲YÊḄ▲L^5´᪀Ḅᨵᐵ,1ëᑮ4c,ᦑ²Ah^aÓḄn Láᙠ▲L^ḄÔẠ¥ᩞᧇDᐰÝᦪḄᢚ¦。3.4.4å7´⚜L^Ḅ▲L^d▲L^◀þὃ⇋ᩞᧇឋh、´᪀ÝæCOḄᑖ⚗Ýᦪ,ÒÓE᪗G☠ᢣ᪗Ḅ⌕。3.4.5⚜L^Ḅឋiä5ᐸcᨵᐵ᪗S。•80•
4H04.1S1éV4.1.1²Ah^▲Ycᒹ3µᢝYýèᏔᯠYýÊ᪀5û☢Ḅ²Ah^c,þè³V、⌚、ä)Ḅc。ᙠᵨè₹AḄᔠ,û☢ᢙr、ᢙu²Ah^þè³VcyᦔLᔠᢥ᯿Ô|ᔠ;⌚cä)cyᦔLᔠᢥ᯿᪗ᔠ(⊤1)。Þᵨ▲Ycᒹ3µᢝYýÊ᪀5Ḅᢰ、ᢙ÷ឋèL^æ¹c。L^¹cáᵨh¸¬¹ᩭᑴ´᪀ḄÞᵨY,hµaáncḄ⊡ᐙ。ᨚYýS1GþÃᵨL^ᑴ,ü¤Z´᪀^Yå´×ᩖḄý,aL½¥²Ah^èU¤Ḅ¹cèᑴ。ᔠᵫZᐸz·¤´᪀ḄL^èU¤Yx8´ᜧ,ᙠcL^èU¤y,Lὃ⇋z·Ḅx8。⊤1¹cᑁ]è₹Aᔠ⊤Yý▲Y¹cᑁ]₹Aᔠï-ᢝYý²Ah^▲Yû☢²Ah^Ô|ᔠᭆ᳛▲Y-ᢝYý²Ah^▲Yþ5²Ah^Ô|ᔠᭆ᳛▲Y-ᢝYý²Ah^▲Y⌚᪗ᔠ▲Y-ᢝYý²Ah^▲Y´᪀ä)᪗ᔠ](L^-ᢝYý²Ah^▲Yþ5ä)᪗ᔠ](L^-ᢝYý²Ah^▲Y³VÔ|ᔠ▲Y-ᢝYý²Ah^▲Y☢¶ᔣᢙuÔ|ᔠᭆ᳛▲Y-ᢝYýÞᵨ▲Yᢰ、÷ÖᦔLᔠᭆ᳛▲Y-ᢝYýÞᵨ▲YZᢰZᦔLᔠᭆ᳛▲Y-•81•
I⊤1Yý▲Y¹cᑁ]₹Aᔠï-ᢝYýÞᵨ▲Y³V᪗ᔠ▲Y-L^、UeᢝYýL^Y᪗ᔠឋï-L^L^、UeᨚYýL^Y᪗ᔠឋï-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▲,ᓽᙠ、、Þᵨ、NÊëᑮḄÞᵨ▲。᪷#᪗《´᪀G☠ឋUS᪗》GB50153—2008▬BAPA.3.3ᩩ,´᪀ḄÞᵨ▲ᢥ᯿|éḄ⊤4.1.3ḄéVÃᵨ。4.1.4|ᩩéVµ|é〉ᵨḄ-UeᔠḄÔ|¤Ó。h▭,☢Ḅ¤Ó5ᨵSVḄᐵÝ,S1¹?SᜧZ35myGÃᵨO¤,ᜧZ35m£Ãᵨ9¤。¤ZþI,G〉Sãᜧ,üÅ5å£ðZ0.70。5Ueᔠû☢ḄDíS1£Zû☢ᑁ。4.1.5ry,Ue☢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)ᐵZᔠᨵᦔ{ḄéVÃᵨ。4.1.6-UeᔠᙠUe☢ᑁ[Ḅ⚜L^ḄL^ᜫCO5UeáÔ|SḄ。üS1ᨵᐜM-⚜L^ḄÐ-,ᦑüḄ⚜L^ᜫCOµ⚜L^5±5ḄÂÙS⚗。´᪀Ḅèü,-UeᔠḄUe☢ḄᦈUᵨ¡VgVû☢ᑁḄèüL^,UeᦈULUᵫZ´᪀èü¨ᕈcᔠḄᱯ,ᐸLUS1´Ue⌕ð。ᦑᦈUCOVgḄ⚜L^ᜫ◤⌕ὃ⇋%Vᱯ,G᪷⚜L^SDᜐᵫZᦈUᵨVgḄL^Sᑖ[ÜḄL^âä(LUâä)ᩭcÏLḄ⚜L^ᜫ。¤Z⚜L^,ᦈU¡âã´᪀ḄU¤ä,S1üḄ⚜L^ ¡ᶍᨵâã¨á9Ú,wDᐰᙢ¹ᓄc,GᦈUCOVgḄü⚜L^ᜫ。4.1.7UeḄᦈUiÝÃᵨ᪗《aîUeè⚜L^UeËé》JTGD62-2004▬BFḄci。DiáÔZ《CEB—FIPModelCode》ḄaÓ,ᢥS1ấ⏚]ödᡈºödḄx8Ýᦪ,Í┐¤C50þḄUe¥µᢚ¦。AÓ᪗《aîUeè⚜L^UeËé》JTGD62—2004ᩩᦻ9óP6.2.7ᩩ。4.1.8ᔠḄ´᪀5Ue☢´ᔠÜ,ᙠᓣ9ÂḄᵨÊ,ᵫZ5UexḄ´Ýᦪ,û☢ᑁ¡XèüfL^。ᙠÂḄᵨÊ,û☢ᑁ¡XfL^。¤ZÔ☟V´᪀,û☢ḄfL^Q¡VgQᑁ^。•83
ᓣ9ÂᵨèÂᵨḄH 5᪗《aîËᵨé》JTGD60—2004P4.3.10ᩩéVS。ᙠSVḄyᕜᑁ,-Ueᔠ⊤☢ḄÂᓣ、Â9ì¬ᔊᨬË(⚔☢ÂË)、ᨬÚ(⚔☢ÂÚ)ÂḄUᓄ。ᵫZUeḄÙឋhxÞὅÂÆû☢ËïᔣX¨Xᑁ^,SÂUᓄùᢝS6yÜ,ὅÂÆZS,½ᑁ^⌲j`ᜫ。ᦑÂXḄᑁ^áḄ。ᡠᨵẆᙳ,ÂÆû☢ËḄᑖ[á´ឋḄ,wS1G⊤ëdÍïᑖ[¤Ó:ᑖ6ᢚ´¤Ó(id“S1¤Ó”),Ue☢ᙳᒴᓣ9¤Ó(id“¹ᓄ¤Ó”)。ÃᵨS1¤ÓḄ⌕éᨵᡃḄ《aîËᵨé》JTGD60—2004、jḄ《-Ueᔠé》BS5400:PART2:1978(Steel,concreteandcompositebridges—Part2:Specificationforloads)、>ᔜὶᔠé(《AASHTOLRFDBridgeDesignSpecifications)),ThirdEdition,2004)æ,D,2003ᓭᜧE¤☘URîᔠ5¥µ9¹¨ᑮḄÂᑖ[¤Ó2004½ḕ/Ẇ▾¤??£ᜧ(65m+2X120m+65mC᪀)Ue☢ÞḄMᔣÂaêDᑖ[¤Ó。Ãᵨ¹ᓄ¤ÓḄ⌕éᨵᡃḄaî᪗《aîË´᪀èᩈ´᪀é》JTJ025—86、ᡃḄRî᪗《Rî´ᔠéV》TBJ24—89、|é《⍝îï@IÖ》。âéBSEN1991—1—5:2003(Eurocodel:Actionsonstrucures—Parti—5:Generalactions—Thermalactions)xyÃᵨµBÍï¤Ó。GÓ,ᔠÂḄᑖ[¤Ó,÷ÂḄᑖ[üýx8ᜧ,⌕ᩞᧇḄÙòឋhᑴ。¤Z-UeᔠÂḄH,ᔜ“S1¤Ó”ḄÂHÙ´ᜧ,>ÃᐰᑖdkVÂ,,ÂḄᓣÂᨬᜧd21°C〜30°C,9Âᨬᜧ᪷ᑖdᓣÂᨬᜧḄS30%(Ue)S20%(Ç☘Uejé•84•
ÂḄᓣÂᨬᜧd16°C,9ÂᨬᜧdS8°C;âé5jéÏx;ᔜ¹ᓄ¤ÓḄÂHå´ê,ᑖdUe☢åÂË、Ú10°C〜15°C。¼᯿ᑁé,|éÆᵨµᡃc᪗《aîËᵨé》JTGD60ḄéV。4.2¥7Qs▲,4.2.1|ᩩáᐵZ-UeᔠDᐰæÍḄ⌱ᵨ。⊤4.2.1ḄDᐰæÍᑜᑖáᢥ᯿c#᪗《´᪀G☠ឋUS᪗》GB50153ḄÏᐵéV,Íὃ⇋-UeᔠḄᱯ¡Ḅ,5c᪗《*é》CJJ11ùᢝS。4.2.2|ᩩ¡µ²Ah^▲YcḄ⊤ëÓ,〉ᵨZ|é´᪀᪀5Ḅ²A^c。|éxyᢣᙠcÃᵨ⚜L^ḄÔ☟V´᪀Ḅ²Ah^▲Yy,Lὃ⇋ᵫ⚜L^VgḄQᦔL,5c᪗《aîUeè⚜L^UeËé》JTGD62ùᢝS。|ᩩdnᑴឋᩩᦻ。4.2.3|ᩩéVµxḄ²Ah^▲YcyḄᵨᔠïÓ。#᪗《´᪀G☠ឋUS᪗》GB50153—2008P4.1.1ᩩP1méV,S´᪀ᡈ´᪀᪀5ᜫ³Vy,L±d½´᪀ᡈ᪀5Ô«µ²Ah^▲Y。-UeᔠÙᙠ▤6Qá@⃩▤6,Sᑖ²´ᜧḄ^y,}ᨵGhcᜫ³cè,ßà¡Þlẚ,%ïẚᕈᾪឋẚḄᱯឋ,ᐹᨵÎBឋ。CD,ᔠᙠ²Ah^▲Yy,◀LÒÓ|éḄn⌕,VL᪷|éḄÏᐵéV¥³Vc。4.2.4-UeᔠUe☢Ḅ᪀⌼èc,5UeḄ,⌕áᦈUḄèüᦔL¤Ue☢Ḅx8、þ5¤Ue☢ḄᵨèᵫZ¿ᔣ´᪀¤Ue☢èüC´ðḄx8æ。85•
4.3²³´ᵨ▲^4.3.1Ó(4.3.1)dᢝYý▲YḄ¹c⊤ëÓ。ᵨḄᦔLᔠS1Ãᵨ᪗ᔠ、⚣⍗ᔠèᔠ,ßDᐰæÍVḄS⌕ឋÝᦪ;▲ḄHéZh¸Ḅ¬¹。4.3.2ᵨḄᔠéV5c᪗《aîUeè⚜L^UeËé》JTGD62ḄÏᐵéVÔ|S。4.3.3Ḅᢰᑴá´᪀CḄᑴ⌕,⚜áᡂszḄ⌕。▲ 5c᪗《aîUeè⚜L^UeËé》JTGD62S。4.3.4#᪗《´᪀G☠ឋUS᪗》GB50153—2008P4.1.1ᩩP2méV,S´᪀ᡈ´᪀᪀5cx8ÞᵨᡈὊឋhḄY,L±d½´᪀ᡈ´᪀᪀5Ô«µÞᵨ▲Y。-UeᔠḄᢙrh^⌕ᩭfè,èôᜫ³,ìᐰẚ;S@ècᜫ³,ῳᜫᣵµè¤Ḅ?ᥛ,ᨵnᜧḄ¹^6,ῳa$]᧕ញᒓâãᐸ4s,ßàEÞᐰẚ。k,ᔠḄUe☢ᵫZÂ、UeᦈèüæCO,☢]᧕c÷j,tSyGx8Ḅឋ。CD,-UeᔠᢥÞᵨ▲Yy,◀LÒÓ|ééVḄn⌕,VL᪷|éḄÏᐵéV,¥´᪀³VUeÐ÷¹c。4.3.5¤ZxḄ,Ue÷ÖḄᑴ⌕5c᪗《aîUeè⚜L^UeËéHTGD62S。ᔠḄUe☢ᵫZUeᦈᑮḄèü,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^▲YḄ⚪,ᐸẚᐹᨵÎᯠឋ5tSឋ。Ḅ⌚⌕áᵫZ×s₹AḄwAᵨ。⌚Ḅ▲Y⌕ᨵ:SáᙠwAᵨÊ,dCìëS⌚í´ëᑮÁEY;áᙠwAᵨÊ,ëRᑖX´ᜧḄ¦Ø,Vgèüᩩ5è⊝ᩩ5ḄᦋU,ឤAᵫ³VᦔL⌲FUd⌚ᦔL¨ëᑮÁEY。S1¿ᔣᙳÃᵨ"??²Ḅ⌚⌕áPSïY。ÅÃᵨ"??²、Ãᵨᓫ??²ḄþI(´ᡈs´)GhBPïY。PSïY¹c´d?¹ᓫ,Ãᵨ¹ᓫḄ^E⊝aÓᓽG;PïY«´d×ᩖ,Lþᑴèüᩩ5Ḅᨵᦔឋèᑴ?ᜐ¿ᔣ¦Ø▲ᩭ。ᐹd:(1)ᙠᨬᑭḄ₹Aᡈᵨ᪗ᔠÊ,?²cῃ;(2)ᙠᢙ⌚ÝᦪyqfýḄ⌚ᵨ5fS᪗ᔠÊ,-S?²ᜐḄ¿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-Ueᔠû☢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-Ueᔠ᪷´᪀³V5û☢ᛛឋBÅḄᐵÝ,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(Ú5Ḅ^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^pᵫè¶ᔣ0|;(3)Su^ᙠ50%〜100%Ḅu^²Ah^y,ᢙr²A^GᙠBÍïY´ឋᑁä。5.1.3┑æᢙuþ5ᙠò⌴Ue☢]E☢Ḅöu^y¡BU¤,~¨ᙠ]E☢VgZ,Þ-U89•
eᔠû☢Ḅ▲ᢙrn9Ú,CDᙠc-UeᔠᢙrnyLὃ⇋ZᦔLḄx8。|ᩩ¡µὃ⇋ZᦔLUe☢ᑁÚᵨḄrëᵨÊḄ-Ue¹?ᔠ▲ᢙrncaÓ。ᵫZUe☢ᨵϤZ,▲YyUe☢}ᙠí,-Ueᔠû☢ᢙrncᑖkïüý:Ue☢ᑁíᙠÍ6wᑁíᙠèᑁ,Ue☢ᑁíᙠÍ6wᑁíᙠῳᑁ,Ue☢ᑁíᙠÊ6þÊwᑁíᙠèᑁ,Ue☢ᑁíᙠÊ6þÊwᑁíᙠῳᑁ。|ᩩᡠᑡḄrëᵨ,6-UeᔠᢙrncaÓá´ᔠᳮÙaÓÏᐵ¹´»ᔠḄ(AÓ《-Ueᔠᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠé》ᑴ,2010)。Ue☢☢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《-Ueᔠn、U¤÷ÖḄẆ》(LBÜtb,ᓅ):ñᜧE,1994)aÓᑖ¤éᑴÈᡂḄ¹ᐸÏᐵ¹Ḅ23᪷-UeᔠḄᢙrn¥µ¹c(AÓ《-Ueᔠᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠé》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^âäḄcᑖdᛛឋíᙠᑁᑁÍïüý。᪷|éᑴÈᡂḄ¹´»,L^âäḄcaÓá᪷⌱ᵨḄ¼ᦪ¥ᔠ¨Ḅ。ᢥ᯿|é、S.Chen«Loadcarryingcapacityofcompositebeamsprestressedwithexternaltendonsunderpositivemoment》(《JournalofConstructionalSteelReseach》,2005,Vol.61(4):515—530)Ὢ《-Ueᔠn、U¤÷ÖḄẆ》(LBÜtb,ᓅ):ñᜧE,1994)aÓᑖFÜᑴÈᡂḄ¹ᐸÏᐵ¹Ḅ14᪷-Ueᔠ⚜L^▲L^âä▲L^¥µ¹c(AÓ《-Ueᔠᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠé》ᑴ,2010)。´»⊤ó,ᢥ᯿|éaÓcᑮḄ⚜L^▲L^âä▲L^5¹´»7Ù´ð(ᙳ7Ùᑖd6.3%2.5%,᪗Ùᑖd0.0980.035)。5.2ᢙu²A^c5.2.1cᑁé}éVᙠ▲Yy,-UeᔠḄᐰMᔣu^pᵫῳ²³。|ᩩᡠᑡaÓ5c#᪗《´᪀é》GB50017S。5.2.2Sᔠ²r、uᐳxᵨy,ᔠᢙu²A^¡û☢ᡠ²rëḄâ㨦ð,ᦑÃᵨᨬᜧᢚcL^Ḅï-ὃ⇋ᔠr、uᔠᵨ。5.3³Vc5.3.1|ᩩéVµ-UeᔠG¥³VcḄ•91•
üý。1~☢rsYUdrY(Îᔣrs¦U¤)Ḅcè,idᜫ³。ᔠ,SUe☢|©ᐹᨵÓiḄnC,w«þ5ìᐸ5Ḅèᱞ)ᙢþᙠSgy,h{èḄÎᔣÑ,¡ᜫ³V,CDr¹cḄ³Vឋ。2rëᵨḄIO¤û☢ᔠ,Êè,◤⌕ὃ⇋³V⚪。ὃ⇋ᐸ^Y5ᓫVIO,wDᐰᙢ¼ὃIOḄᨬᜧA/h▲。ᡃc#᪗《´᪀é》GB50017dµ¹ᓄcóZLᵨ,´ᔠh¸Gh⍗ᑮḄû☢ᨬᑭÏå·,᪷Ḅ³VÝᦪ,êᙢ¡µ¹c³VឋyèfᵫZ(A)5ᐸ³{(ᓃ)Ḅ▲,Ó《´᪀é》GB50017—2003⊤4.2.1。½⊤ḄᦪÝ᪷"í¤iæû☢IO¤¹?,SḄ³VÝᦪ(^)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。kE,Q345qḄ](u^[r]d120MPa(Hf᪗《Rî•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^(&==())Ḅ,GþMᔣã<î;ü¤ᨵL^Or。I0)Ḅ,¬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。dµÞḄ³VXdḄÎᔣwD,ã<îᨬ¥ÍÎᡂ¤O(ᱯ◤⌕yaGᓫÎ[)。ᙠῳÍÎᡂ¤OMᔣã<îy,ᐸû☢ÏᐸC⌕Ãᵨc᪗《aîË´᪀èᩈ´᪀é》JTJ025—86P1.5.10ᩩPk、£ÍméVḄᑁ]。Cd%RéV}áaîRîéLÆᵨḄh¸ᦪ。SᙠῳᓫÎOã<îy,ã<îḄÏC⌕Ãᵨ•105•
c᪗《aîË´᪀èᩈ´᪀é》JTJ025-86P1.5.10ᩩPméVḄᑁ]。6.4.5?²ã<îáᢣḄ?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☢Ḅ³V。ᐸ³VឋᢥíD᪀5³VaÓὃ⇋(ᓽ$=/),üᐸû☢cAᑣᒹ3ã<î☢cã<îÍÎᔜ15X~Xv/235//ykᑁḄῳ☢c。•106•
7ᢙ±³e{7.1S1éV7.1.15UeᔠḄ^EឋhpᑮÍïᩞᧇᔜfᩞµḄx8,¨w5u^þ5Ḅ⌱ᵨᨵ´ᜧᐵÝ。L⌱ᵨᔠᳮḄu^þ5ù²5Ue☢ᐳx^。7.1.2ᢙuþ5ᑖdCឋþ5ឋþ5。Cឋþ5ᒹ3Ðlþ5、9þ5æ;ឋþ5ᒹ3┑þ5æ。ôÃᵨ┑、Ðl、9þḄ?ᢙuþ5y,£«¹5ᑖ᪆Ù²ÜÞᵨ。ᢙuþ5Ḅ⌱ᵨ¼ὃÊᑡwᑣ:(1)S5Ue☢´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¸ᙠxSᔠ£Ô«3ï。7.1.3dù²Þᵨ▲YÊUe☢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,1?,"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;0ËUe☢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°。₹AiIᵨZ᪀5Ḅå▲ä)õC¹c,₹AinᵨZ᪀5ḄÞᵨä)¹c,₹AiinᵨZ᪀5Ḅä)¹c。S1±d,S₹AᵨÊXL^UᓄḄKQᦪhÒÓrz>lX108,᪀5ÒÓå▲ä)õCḄ⌕;S₹AᵨÊXL^UᓄḄKQᦪhÒÓnᙠ2X106〜5X106,᪀5ÒÓÞᵨḄä)õC⌕。ᢙuþ5Ḅ^Z᪀5Ḅ^,LÃᵨä)₹AiI¥å▲ä)õC¹c,ᡈÃᵨä)₹Ain¥ÞᵨḄä)õC¹c。•109•
SÃᵨä)₹AiI¥þ5Ḅå▲ä)õC¹c,¤Z┑þ5,ᐸuL^ÀLÒÓ:YfiArp^ArL/7m£(12)^p.maxI"p,niin(13)Ó:yFf——ä)₹Aᑖ⚗Ýᦪ,Hl.o;/Mf——ä)ᢙ^ᑖ⚗Ýᦪ,¤S⌕᪀5H1.35,¤Q⌕᪀5H1.15(S⌕᪀5áᢣᜫᦔ¡¤´᪀^X´ᜧx8Ḅ᪀5,Q⌕᪀5áᢣᜫᦔ¤´᪀^Xx8´ðḄ᪀5);Arp——ᢥä)₹AiIcᑮḄuL^À;ArL——uL^Àä)û{▲;rp.max.rp,^■ìä)₹AiIᢥᨬᑭüýãAZx8´ḄᨬᜧᨬðuL^(MPa)。ä)nGᢥÊÓc:A^Nr=At^X2X106。N<108y,û{▲ArL=(j^)Arc=0.613Arc。l.ox1041.0xio51.0xio61.0x1071.0x1081.0x109¨2µ¶|·¸¹º»¢J110•
¼ὃâé4,┑Ḅä)5⁚GHdArc=90,m=8。ᢥ᯿┑Ḅä)](uL^5ᢙu²A^¤LḄ/uL^(260MPa〜295MPa)ḄᐵÝ,ͱdᐸᐵÝx᪵〉ᵨä)](u^5ᢙu²A^,Gþᵨä)₹AiI¹cḄä)](u^Àèd20%Ḅᢙu²A^。Ðlᢙuþ59ᢙuþ5Ḅä)^üýG¼᯿Þᵨ,ᨵG☠¹¸ᧇ,G〉S0Ë。7.4Ue☢¶ᔣᢙuc7.4.1、7.4.2Ue☢¶ᔣuᑗẚáᔠḄ⌕ẚ¤ÓS,yLbþὃ⇋。5Ue☢Ḅ¶ᔣu^¤ᑖ[Z[ᨵþ5ḄÑ,Ue☢ᙠ%ï¤^ᵨÊGhBÐ÷ᡈẚ。᪷ᔠḄ᪀⌼¤Ó,Ue☢¶ᔣᢙuy◤⌕ᑨGhc¶ᔣuᑗẚḄ^ᙠuᑗ☢,Íwùᙠ²A^▲YÊ-Ò^ᙠuᑗ☢Ḅ▲ᢙu²A^Ô«h▭ᙠḄ¶ᔣu^。x8ᔠUe☢¶ᔣÐ÷¶ᔣᢙu²A^ḄCOᒹ3Ue☢ḄÑ,UenæÍ,¿ᔣO᳛¿ᔣḄÑ,ᢙuþ5ḄïèᑡïÓ、ᦪä、¸,₹AḄᵨïÓæ。y,LS~Ue☢Ḅᨬðû☢ÏþèOÍVï☢¥ᑴ。7.4.3tᨵᙠuᑗ☢ÍÎᙳhᨵᦔ7)Ḅ¿ᔣÇhᐭ☢c。7)ZḄ⌕¼Óc᪗《aîUeè⚜L^UeËé》JTGD62Ḅᨵᐵᩩᦻ。ᵨZ☢¿ᔣrᡠOḄ,Gᐭ¶ᔣᢙu。7.4.4þ5Ḅ₹Aᵨpᒹ35Ue☢¤ᡂᔠû☢ÜḄᔜï₹A,ឤ₹A、b₹A、⚜L^、ᦈUþèÂᦔLæ。ᙠc¶ᔣöu^ᵨy,ᢥ´ឋᑖ᪆ï-•111•
ÍᎷUe☢Èᐰᔠ¥c,ὃ⇋5Ue☢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,wùᙢÃᵨ¸51/10ZḄ´ð 。7.4.6Ue☢Ḅ¶ᔣᢙu²A^ᵫUe¿ᔣÍᑖᡂ。xy,¤UeḄuL^ö¥µ▲ᑴ,þ■{Bᾪឋẚ。7.5ᢙuþ5Ḅᦪäc5[7.5.1〜7.5.3ᢙuþ5Ḅᦪäù²µᛛឋ▲YÊUe☢5Ḅu^ò⌴。SVu,6ᑁ,þ5Ḅ²Ah^ᜧZUe☢ᡈḄ¶ᔣᡈ¹²A^。rë,6,Ue☢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°þId·(«3)¥9ó。᪷rëᨬᜧᒹî´Vu^5ḄᦪE᪷rëᨬð ᒹî´Vu^5ḄᦪEnMminU),ᨬìu^5Ḅ[HÍὅḄᜧ,ᓽwf=max{?iMmax(:c),wMmin(o:)}。•112•
d3³å°èᒹød7.5.4rë,6,ὃ⇋þ5ᕜkḄUeèüᵫZÐ÷¨9Ú,þ5Ḅᢙu²Ah^Lbþᢚ¦。7.5.5ὃ⇋þ5ᙠZèSVḄU¤h^,þ5ᐹᨵSVḄ¶ᔣu^Sᑖ[h^,SVu,6ᑁḄᦪäGᙳᑖ[。7.5.6Ue☢5þḄâ,ᙠᦈ、ÂæᵨÊ,ᨵ´ᜧḄ¶ᔣu^。%RÑḄ¶ᔣþL¥ãn。•113•
8᪀⌼⌕8.1Ue☢8.1.3|ᩩéV⌕þUe☢Ð÷ᑁ^dÔ,Íὃ⇋Ue☢ᑁ5Ḅᨵᦔᐳxᵨ,5Üᑡ┑᪀⌼⌕Sg,0☠êÎᦪäḄ⌕,|éᨵᕜZ᳛⌕,jéᨵ¸⌕,EḄᙳáâã5UeḄÄ"^þèUe☢5Ḅᵨ。ḄᔠéÏLḄ¶ᔣO⌕Ê:âé:(1)◀Ãᵨ《Eurocode2:Designofconcretestructures—Parti—1:Generalrulesandnulesforbuildings》EN1992—1—1:2004Ḅ{ï-,ᙠᐰû☢ᨵ⚜L^üḄ⚜ã^èᨵᵫZn%U¤ᑮ´ᜧḄ¹L^(ᦈḄ¸ÍèQᦔLḄx8),ᔠᡈå₹AᵨÊᔠḄUe☢ḄᨬðO☢cAsd^^^^^ᡀ/^/⑴^dUe☢¹,÷ḄÐ÷¹^ ,G¹ᓄᢥUeᐰû☢c)。(2)—XþḄ☢cL[ᙠ¹´ᜧÎḄSXËkᑁ;(3)¿ᔣUËUe☢,LHᵨË;(4)ᢥ᯿(1)、(2)VḄ,L[ᙠᵨḄᱯÎᔠÊUec¹L^Ḅ,÷。|é:¹L^Ḅ,ᙠ¹ᶍUeû☢ḄþIᔠᡂ?▬ê,rëVgḄíïᔣ¹LUÞUe☢X÷j。5UeÏx,%ï÷ÖÞyhὃ⇋UeḄ•114•
ᢙ¹ᵨ,¤Ue☢¼5ᵨè☢ᵨ}ᑭ。ÔZ%Sá-,éVíïᔣû☢crsᙠUeû☢c2%þ,ᕜZ᳛d0.045cm/cm2。ãDᜧé:⚜L^☢¶ᔣO᳛ðZ1%,Íᨵ2/3[Zᨵᦔ{k⚔6。8.28.2.1ᔜÑḄÑ◀LᐹᨵSVḄnC,VLὃ⇋ᙠZ@⃩«ῖ⇨ᵨ|ᩭḄᑭCO。k,»Ḅῳâↈ,]᧕XU¤,ßà¡VgῳḄ³V⚪。CD,¤´᪀᪀5ḄÑ0µÏ⌕。8.2.2¹?Ḅè{âðy,]᧕ù²Ḅ³V,âᜧyᑣèḄL^ᑖ[ᙳᒴ;ᔠè{VLÒÓUe☢Ḅ²nḄ⌕。᪷ᡃá"QḄẆ(Ó《´᪀》,á"Q,/᱐",1991),dµù²èḄ³V,ᐸSÎfᵫ¸{5ÑåÔ«ìQ345qḄ4cn¡,ᓽèᐰ{Ô«24ýḄÑ(2X15X7235/345=24.7,H24ý)。8.2.3¿◞(¿ᥛµ)þèã<îḄᦪä、éuᐹ[L᪷h▭^üý,Í´ᔠ|é⊤5.3.1(1O¤◤⌕¹c³VḄᨬᜧA/ò)|éP6.4⁚³V¹c⌕Wᔠὃ⇋Ü。8.3ᢙuþ58.3.1,8.3.2┑þᜮÊ⊤☢Ë☢±30mmþ,ádµù²þ5hÃᢙUe☢5Ḅᣬgᵨ;þ5ÆïᔣḄᨬᜧ¸éV,⌕ádµ■{ᙠUe☢5D☢X«ᜧḄ÷Ö,x8ᔠḄ•115•
ឋh。8.3.3ÐlḄ᪀⌼Ï,⌕᪷²Ah^ᡠþḄ¹Ḅ᪀⌼Ï。8.4ᐸ᪀⌼⌕8.4.1ᔠḄὊឋ᪀⌼,ᓫVáUe5ḄὊឋ5■ῖ⇨Ḅ¹ᓫᔠ,¨L~´᪀ὊឋḄᑁ、CO"ÊWᔠᜐᳮ。ᐸ⌕ᒹ3:(1)~、ᩞᧇ、、YNḄØ,ὃ⇋ḄὊឋ。(2)⌕᪀5ÒÓG、GëḄYN⌕。ᔠᙠÞᵨᑁ,ᢥéV▲¤ᐸ¥?xYNáὊឋḄr⌕ᩩ5。ᦑᔠḄ[᪀⌼⌕ÒÓóZYNḄ⌕。(3)〉S0Ë☢öḄÖSc;☢LG☠Ḅ☢■ö6;ö᪀⌼LhÒÓYN⌕;Î☢Lö9;ᑁ£ö⍝;´᪀᪀5,L?äÔÕÃᵨ£ZcöḄ¯vû☢,ÍZõ9、ᙷ9ᜐᨵᦔḄöl。☢ÝUḄ■öè᪀⌼áᔠ´᪀ὊឋḄS⌕ᡂᑖ,ᐸ,Èᗐ¨ᨵᦔḄ■ö6、Î☢Çv、r⌕Ḅö9þèRöᙠᑁæ}á■{☢Ḅc?öä¨、ῖ⇨Ḅr⌕。8.4.3,8.4.4ᔠèUe☢Ḅ´ᔠ☢áVᐵÑ,ᐸnὊឋᐵÝᑮḄDᐰÞᵨõC。k,´ᔠ☢᧕☢c?öḄῖ⇨,᪀⌼⌕ÈᗐY®。•116
▬ìB"ᨵᦔÖឋüḄíî₹7|ï-ᵨZcUeU、ᦈ、ÂæᵨVgḄᔠû☢ḄL^Sᑖ[,ὃ⇋ᔠE☢ḄϤZᦔL。UeU、ᦈḄᨵᦔឋiäå+ݼ᯿âéḄᡂ»,ᵫὃ⇋U、ᦈḄUeᨵᦔឋiäEci,EcH=EJ[l+A^Gd。)]è5UeឋiäåḄV/。gdUC,cÂᵨyS=0。¤ZÔ☟V´᪀,Lὃ⇋ᔜᵨVgḄQᑁ^ᦔL,Dy,ã₹AiVM。LþP、M¡,ᓽᐸᑖdQí^Qrë。117
▬ìCÂïcÕᔣÇḄå⚜bsᔠᢰ,Ï|¦ᔣḄ⚜L^ᔠᢰc5ᨵ¦ᔣḄᔠᢰcḄÙᙠZᨵå⚜L^"ËUᓄVgḄU¤。Þ¦ᔣḄ⚜L^ᔠU¤c◤⌕ὃ⇋⚜L^"ËUᓄVgḄU¤,/。、ᐟ/tḄcï-Ó|éP6.3⁚,/eḄcáÔZᑖḄ⊝ï、LUO¯ᐵÝèUeᩞᧇḄ|᪀ᐵݨ,A5«G°Ôᩩᦻ9óP6.3.1ᩩ。ᢥ᯿|éaÓ¤Ïᐵh¹[¼ÓAyyubB.M.《PrestressedCompositeGirdersUnderPositiveMoment》(《ASCEJournalofStructuralEngineering)),1990,116(11):2931—2951)WojciechLorenc《BehaviorofCompositeBeamsPrestressedwithExternalTendons:ExperimentalStudy》(《JournalofConstructionalSteelResearch》,2006,62(12):1353—1366)]Ḅ4᪷¹?-UeᔠᙠrëᵨÊḄᢰ¥¹c(AÓ《-Ueᔠᓫ¯☟^ឋhᳮÙẆb》,《-Ueᔠé》ᑴ,2010),´»⊤ó,ᙠP=0.2PU、0.4PUy,ᢥ|éaÓcᑮḄ´»5¹´»7Ù´ð(ᙠP=0.2PU、0.4PUy,ᢰch¹Ḅᙳ7Ùᙳᑖd1.1%0.9%,ᙳ᪗Ùᑖd0.1670.080)。•118
S/N:58024255G¨HI:1580242•155ÝJ:24.00ᐗ158024»215502'
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