某四跨預應力混凝土連續(xù)梁橋承載力極限狀態(tài)驗算案例目錄TOC\o"1-3"\h\u32083某四跨預應力混凝土連續(xù)梁橋承載力極限狀態(tài)驗算案例 1269751.1持久狀況承載能力極限狀態(tài)驗算 1198301.1.1使用階段正截面抗彎驗算 162551.1.2使用階段斜截面抗剪驗算 2168901.1.3使用階段抗扭驗算 454801.2持久狀況正常使用極限狀態(tài)驗算 873241.2.1使用階段正截面壓應力驗算 82802212.2.2使用階段斜截面主壓應力驗算 9181031.2.3正截面抗裂驗算 1066491.2.4斜截面抗裂驗算 11316951.2.5預應力筋拉應力驗算 12此次設計考慮因素較多，跨徑較大節(jié)點較多，鑒于計算書篇幅有限，各項承載力驗算結果每10個單元提取數(shù)據(jù)以供參考，力、力矩單位取kN與kN·m，應力單位取Mpa，便于與規(guī)范對照。1.1持久狀況承載能力極限狀態(tài)驗算1.1.1使用階段正截面抗彎驗算由下表可知，正截面抗彎承載力滿足要求。表12.1.1正截面抗彎驗算單元位置最大/最小組合名稱類型驗算rMu(kN·m)Mn(kN·m)1I[1]最小基本7MY-MINOK0147550.50591I[1]最大基本20MY-MAXOK071717.10021J[2]最小基本16MY-MINOK-1101.4904147408.25691J[2]最大基本20MY-MAXOK-126.3783147408.256910I[10]最小基本14FX-MINOK-39758.3133223870.807710I[10]最大基本31FX-MAXOK51263.402147284.05110J[11]最小基本14FX-MINOK-68456.057257346.157710J[11]最大基本31FX-MAXOK39510.6147155132.208320I[20]最小基本14FX-MINOK-586442.8851211514.4120I[20]最大基本31FX-MAXOK-338671.11371211514.4120J[21]最小基本14FX-MINOK-642566.93871185766.63620J[21]最大基本31FX-MAXOK-379782.63531185766.63630I[30]最小基本14FX-MINOK-566589.32521072933.16430I[30]最大基本31FX-MAXOK-33340316430J[31]最小基本14FX-MINOK-480593.97561061485.35630J[31]最大基本31FX-MAXOK-274560.52081061485.35640I[40]最大基本15MY-MAXOK108760.7041196472.658240I[40]最小基本30MY-MINOK24582.532196472.658240J[41]最大基本15MY-MAXOK131679.2788189576.688940J[41]最小基本30MY-MINOK39489.5603189576.688950I[50]最大基本13FX-MAXOK55031.0654172589.821350I[50]最小基本32FX-MINOK-43395.4542319767.849150J[51]最小基本16FX-MINOK-87255.9709342012.429650J[51]最大基本29FX-MAXOK15964.9408175453.408460I[60]最小基本16FY-MINOK-674437.82691353919.66460I[60]最大基本29FY-MAXOK-439490.73611353919.66460J[61]最小基本16FY-MINOK-740320.93531361190.21560J[61]最大基本29FY-MAXOK-487975.30741361190.21570I[70]最小基本16FX-MINOK-395449.0668817209.039770I[70]最大基本29FX-MAXOK-226219.117817209.039770J[71]最小基本16FX-MINOK-326788.4729806274.971270J[71]最大基本29FX-MAXOK-172753.7272806274.971280I[80]最大基本15MY-MAXOK150927.2842197999.875780I[80]最小基本30MY-MINOK42278.984197999.875780J[81]最大基本15MY-MAXOK154987.9153193035.455180J[81]最小基本30MY-MINOK48984.5833193035.455190I[90]最小基本14FX-MINOK-126704.4533475188.3190I[90]最大基本31FX-MAXOK-26944.9469475188.3190J[91]最小基本14FX-MINOK-185770.5004500599.579190J[91]最大基本31FX-MAXOK-68827.6316500599.5791100I[100]最小基本14FY-MINOK-796296.05011233631.875100I[100]最大基本31FY-MAXOK-491514.47881233631.875100J[101]最小基本14FY-MINOK-832756356100J[101]最大基本31FY-MAXOK-516731.97271233723.356110I[110]最小基本14FX-MINOK-306485.3364596998.8541110I[110]最大基本31FX-MAXOK-122404.0032596998.8541110J[111]最小基本14FX-MINOK-246866.6294577830.4495110J[111]最大基本31FX-MAXOK-77260.4497577830.4495120I[120]最大基本15FZ-MAXOK39750.9307144641.4684120I[120]最小基本30FZ-MINOK2068.4616144641.4684120J[121]最大基本15FZ-MAXOK35162.9201144649.1942120J[121]最小基本30FZ-MINOK2819.6049144649.1942124I[124]最小基本8MY-MINOK-1101.4901170939.1331124I[124]最大基本32MY-MAXOK-126.3783170939.1331124J[125]最小基本8MY-MINOK0170472.0922124J[125]最大基本32MY-MAXOK0126435.66531.1.2使用階段斜截面抗剪驗算主要由下彎腹板束、抗剪箍筋承擔，由下表可知，斜截面抗剪滿足要求。表11.1.2斜截面抗剪驗算單元位置最大/最小組合名稱類型驗算rVd(kN)Vn(kN)截面驗算剪力驗算1I[1]最大基本14FZ-MAXOK030386.0228OK跳過1I[1]最小基本31MX-MINOK047281.1405OK跳過1J[2]最大基本13FZ-MAXOK2418.446347280.7151OK跳過1J[2]最小基本31FZ-MINOK421.260847280.7151OK跳過10I[10]最大基本14FZ-MAXOK6752.578522847.3923OK驗算10I[10]最小基本31FZ-MINOK1000.959425979.8016OK跳過10J[11]最大基本14FZ-MAXOK8805.056626470.6025OK驗算10J[11]最小基本31FZ-MINOK2777.217630690.4955OK跳過20I[20]最大基本14FZ-MAXOK29045.522772204.3202OK驗算20I[20]最小基本31FZ-MINOK19219.277572204.3202OK驗算20J[21]最大基本14FZ-MAXOK30646.69973487.7616OK驗算20J[21]最小基本31FZ-MINOK20442.168773487.7616OK驗算30I[30]最小基本14FX-MINOK-30839.642969211.2708OK驗算30I[30]最大基本31FX-MAXOK-20139.163969211.2708OK驗算30J[31]最小基本14FX-MINOK-28540.158567625.4402OK驗算30J[31]最大基本31FX-MAXOK-18370.755867625.4402OK驗算40I[40]最小基本14FX-MINOK-8681.47625529.8049OK驗算40I[40]最大基本31FX-MAXOK-2943.685725529.8049OK跳過40J[41]最小基本14FX-MINOK-6656.725221748.6899OK驗算40J[41]最大基本31FX-MAXOK-1297.54221748.6899OK跳過50I[50]最大基本15FZ-MAXOK12597.570933992.776OK驗算50I[50]最小基本30FZ-MINOK6343.848133405.6707OK驗算50J[51]最大基本15FZ-MAXOK14883.879339351.3642OK驗算50J[51]最小基本30FZ-MINOK8191.303540661.1476OK驗算60I[60]最大基本15FZ-MAXOK33947.310765512.0201OK驗算60I[60]最小基本30FZ-MINOK23175.203465512.0201OK驗算60J[61]最大基本15FZ-MAXOK35646.721763407.6001OK驗算60J[61]最小基本30FZ-MINOK24481.158163407.6001OK驗算70I[70]最小基本15FX-MINOK-26055.677159597.1606OK驗算70I[70]最大基本30FX-MAXOK-17081.451359597.1606OK驗算70J[71]最小基本15FX-MINOK-23913.942357930.3641OK驗算70J[71]最大基本30FX-MAXOK-15391.070657930.3641OK驗算80I[80]最小基本15FX-MINOK-4492.913817040.2301OK驗算80I[80]最大基本30FX-MAXOK371.103417040.2301OK跳過80J[81]最小基本15FX-MINOK-2634.238316109.2059OK驗算80J[81]最大基本30FX-MAXOK1959.554916109.2059OK跳過90I[90]最大基本14FZ-MAXOK17318.138143783.8618OK驗算90I[90]最小基本31FZ-MINOK9760.605443783.8618OK驗算90J[91]最大基本14FZ-MAXOK19529.955748780.9172OK驗算90J[91]最小基本31FZ-MINOK11455.007748780.9172OK驗算100I[100]最大基本14FZ-MAXOK36815.940462410.8598OK驗算100I[100]最小基本31FZ-MINOK24745.095962410.8598OK驗算100J[101]最大基本14FZ-MAXOK37824.580562052.9017OK驗算100J[101]最小基本31FZ-MINOK25532.929262052.9017OK驗算110I[110]最小基本14FX-MINOK-19941.014450822.9736OK驗算110I[110]最大基本31FX-MAXOK-12007.246650822.9736OK驗算110J[111]最小基本14FX-MINOK-17624.042748539.588OK驗算110J[111]最大基本31FX-MAXOK-10127.818748539.588OK驗算120I[120]最大基本15FZ-MAXOK4831.521615277.1821OK驗算120I[120]最小基本30FZ-MINOK-1046.200815277.1821OK跳過120J[121]最大基本15FZ-MAXOK5332.88115226.518OK驗算120J[121]最小基本30FZ-MINOK-695.3215226.518OK跳過124I[124]最小基本16FZ-MINOK-2418.446649550.9197OK跳過124I[124]最大基本24FZ-MAXOK-421.260849550.9197OK跳過124J[125]最大基本8FZ-MAXOK038866.2729OK跳過124J[125]最小基本32FZ-MINOK038866.2729OK跳過1.1.3使用階段抗扭驗算由下表可知，抗扭能力驗算滿足要求。表12.1.3使用階段抗扭驗算單元位置最大/最小組合名稱類型驗算rTd(kN·m)Tn(kN·m)rVd(kN)Vn(kN)截面驗算抗扭驗算1I[1]T-Max基本32MZ-MAXOK034458.3421034949.6016OK跳過1I[1]V-Max基本14FZ-MAXOK034458.3421021433.5074OK跳過1I[1]V-Min基本31MX-MINOK034458.3421034949.6016OK跳過1J[2]T-Max基本32MZ-MINOK-4734.013944307.9291421.260831066.3125OK跳過1J[2]V-Max基本14FZ-MAXOK2566.883240788.43542418.446332453.9048OK跳過1J[2]V-Min基本32FZ-MINOK-4734.013944307.9291421.260831066.3125OK跳過10I[10]T-Max基本14MY-MINOK-4621.472727249.73662392.079816973.3177OK驗算10I[10]V-Max基本14MZ-MAXOK4398.740927223.7526752.578514983.4887OK驗算10I[10]V-Min基本31MZ-MINOK-4621.43527312.45541000.959415727.6116OK跳過10J[11]T-Max基本14MY-MINOK-4763.361128781.51774471.611519562.0503OK驗算10J[11]V-Max基本14MZ-MAXOK4417.825928781.51778805.056616186.1359OK驗算10J[11]V-Min基本31MZ-MINOK-4763.323428801.69872777.217619157.4036OK驗算20I[20]T-Max基本14MY-MINOK-8967.444849371.384623948.973243979.9332OK驗算20I[20]V-Max基本14MZ-MAXOK6501.586349371.384629045.522743979.9332OK驗算20I[20]V-Min基本31MZ-MINOK-8967.441949371.384619219.277543979.9332OK驗算20J[21]T-Max基本14MY-MINOK-9247.416251093.925325414.718446364.3731OK驗算20J[21]V-Max基本14MZ-MAXOK6757.165951093.925330646.69946364.3731OK驗算20J[21]V-Min基本31MZ-MINOK-9247.413351093.925320442.168746364.3731OK驗算30I[30]T-Max基本30MZ-MAXOK11303.737549371.3846-20554.6844585.0207OK驗算30I[30]V-Max基本31MY-MAXOK11303.737549371.3846-20139.163944585.0207OK驗算30I[30]V-Min基本14MY-MINOK-8761.875749371.3846-30839.642944585.0207OK驗算30J[31]T-Max基本30MZ-MAXOK10886.328746857.7573-18786.271941133.9236OK驗算30J[31]V-Max基本31MY-MAXOK10886.328746857.7573-18370.755841133.9236OK驗算30J[31]V-Min基本14MY-MINOK-8378.017346857.7573-28540.158541133.9236OK驗算40I[40]T-Max基本30MX-MAXOK6435.573127271.1226-3360.220317460.665OK驗算40I[40]V-Max基本31MZ-MAXOK6435.573127282.359-2943.685717265.5632OK驗算40I[40]V-Min基本14MZ-MINOK-5397.502127240.9934-8681.47617983.8105OK驗算40J[41]T-Max基本30MX-MAXOK5871.245926091.9027-1714.076614766.7247OK驗算40J[41]V-Max基本31MZ-MAXOK5871.245926113.2299-1297.54214409.2188OK跳過40J[41]V-Min基本14MZ-MINOK-5268.178826021.1995-6656.725215951.9127OK驗算50I[50]T-Max基本31MY-MINOK-7505.152830633.14726760.104421318.9715OK驗算50I[50]V-Max基本15MZ-MAXOK5792.028930633.147212597.570921788.6558OK驗算50I[50]V-Min基本30MZ-MINOK-7505.152830633.14726343.848121318.9715OK驗算50J[51]T-Max基本31MY-MINOK-8071.052432779.27588607.559827106.1429OK驗算50J[51]V-Max基本15MZ-MAXOK6060.986132779.275814883.879326058.3162OK驗算50J[51]V-Min基本30MZ-MINOK-8071.052432779.27588191.303527106.1429OK驗算60I[60]T-Max基本15MY-MINOK-11857.515751173.226828321.232649455.6441OK驗算60I[60]V-Max基本15MZ-MAXOK9234.660751173.226833947.310749455.6441OK驗算60I[60]V-Min基本30MZ-MINOK-11857.478951173.226823175.203449455.6441OK驗算60J[61]T-Max基本15MY-MINOK-12134.798351173.226829887.893549690.5263OK驗算60J[61]V-Max基本15MZ-MAXOK9490.816351173.226835646.721749690.5263OK驗算60J[61]V-Min基本30MZ-MINOK-12134.761451173.226824481.158149690.5263OK驗算70I[70]T-Max基本30MY-MAXOK10417.319844431.2608-17081.451339152.0293OK驗算70I[70]V-Max基本30MY-MAXOK10417.319844431.2608-17081.451339152.0293OK驗算70I[70]V-Min基本15MY-MINOK-7901.5144431.2608-26055.677139152.0293OK驗算70J[71]T-Max基本30MY-MAXOK10001.202642110.7641-15391.070635960.3139OK驗算70J[71]V-Max基本30MY-MAXOK10001.202642110.7641-15391.070635960.3139OK驗算70J[71]V-Min基本15MY-MINOK-7520.043542110.7641-23913.942335960.3139OK驗算80I[80]T-Max基本30MX-MAXOK5376.59325228.4849371.103411506.4277OK跳過80I[80]V-Max基本30MX-MAXOK5376.59325228.4849371.103411506.4277OK跳過80I[80]V-Min基本15MX-MINOK-5196.464325147.4263-4492.913812944.7312OK驗算80J[81]T-Max基本30MX-MAXOK5228.283624737.64871959.554912165.7938OK驗算80J[81]V-Max基本30MX-MAXOK5228.283624737.64871959.554912165.7938OK驗算80J[81]V-Min基本15MX-MINOK-5193.292124720.4201-2634.238312474.175OK驗算90I[90]T-Max基本31MZ-MINOK-8610.712534849.7459760.605428119.8654OK驗算90I[90]V-Max基本14MZ-MAXOK6317.054234849.74517318.138128119.8654OK驗算90I[90]V-Min基本31MZ-MINOK-8610.712534849.7459760.605428119.8654OK驗算90J[91]T-Max基本31MZ-MINOK-9100.511937106.830711455.007731403.7177OK驗算90J[91]V-Max基本14MZ-MAXOK6741.271137106.830719529.955731403.7177OK驗算90J[91]V-Min基本31MZ-MINOK-9100.511937106.830711455.007731403.7177OK驗算100I[100]T-Max基本31MZ-MINOK-12316.228553681.890924745.095949639.3419OK驗算100I[100]V-Max基本14MZ-MAXOK9687.949153681.890936815.940449639.3419OK驗算100I[100]V-Min基本31MZ-MINOK-12316.228553681.890924745.095949639.3419OK驗算100J[101]T-Max基本31MZ-MINOK-12453.400753681.890925532.929249642.3214OK驗算100J[101]V-Max基本14MZ-MAXOK9815.382853681.890937824.580549642.3214OK驗算100J[101]V-Min基本31MZ-MINOK-12453.400753681.890925532.929249642.3214OK驗算110I[110]T-Max基本14MX-MAXOK7218.983539527.5764-15363.769133955.8711OK驗算110I[110]V-Max基本31MZ-MAXOK7218.963539527.5764-12007.246633955.8711OK驗算110I[110]V-Min基本14MZ-MINOK-5317.948439527.5764-19941.014433955.8711OK驗算110J[111]T-Max基本14MX-MAXOK6725.643537106.8307-13136.579630452.0808OK驗算110J[111]V-Max基本31MZ-MAXOK6725.623537106.8307-10127.818730452.0808OK驗算110J[111]V-Min基本14MZ-MINOK-5071.564337106.8307-17624.042730452.0808OK驗算120I[120]T-Max基本31MX-MINOK-6382.572824765.6071-381.071210824.9141OK跳過120I[120]V-Max基本15MZ-MAXOK4675.406424687.18114831.521612178.0284OK驗算120I[120]V-Min基本30MZ-MINOK-6382.571624759.7118-1046.200810926.6283OK驗算120J[121]T-Max基本31MX-MINOK-6614.130424765.6071-30.190310825.2219OK跳過120J[121]V-Max基本15MZ-MAXOK4715.80324687.18115332.88112178.3746OK驗算120J[121]V-Min基本30MZ-MINOK-6614.129224765.6071-695.3210825.2219OK跳過124I[124]T-Max基本16MZ-MAXOK4734.01544307.9291-505.51332683.2219OK跳過124I[124]V-Max基本24FZ-MAXOK4734.01544307.9291-421.260832683.2219OK跳過124I[124]V-Min基本16FZ-MINOK-2566.884140792.7562-2418.446634141.2421OK跳過124J[125]T-Max基本29MY-MINOK044307.9291025085.1453OK跳過124J[125]V-Max基本8FZ-MAXOK044307.9291025085.1453OK跳過124J[125]V-Min基本32FZ-MINOK044307.9291025085.1453OK跳過1.2持久狀況正常使用極限狀態(tài)驗算1.2.1使用階段正截面壓應力驗算由于PSC將截面分為上端、下端、左上端、左下端、右上端、右下端6個點，取其中的最大值根據(jù)規(guī)范與0.5fck=20.75Mpa比較。由下表可知，未開裂構件使用階段正截面壓應力驗算符合要求。表12.2.1使用階段正截面壓應力驗算單元位置組合名稱類型驗算Sig_MAX(N/mm^2)Sig_ALW(N/mm^2)1I[1]標準74MY-MAXOK6.891620.751J[2]標準74MY-MAXOK6.898220.7510I[10]標準76FX-MAXOK14.049420.7510J[11]標準76FX-MAXOK13.430420.7520I[20]標準76FX-MAXOK15.690120.7520J[21]標準76FX-MAXOK15.298520.7530I[30]標準76FX-MAXOK14.852620.7530J[31]標準76FX-MAXOK15.498120.7540I[40]標準76MY-MAXOK13.612720.7540J[41]標準76MY-MAXOK15.566820.7550I[50]標準74FX-MAXOK15.076220.7550J[51]標準74FX-MAXOK13.551720.7560I[60]標準74FY-MAXOK14.837420.7560J[61]標準74FY-MAXOK14.086920.7570I[70]標準74FX-MAXOK14.207220.7570J[71]標準74FX-MAXOK14.992820.7580I[80]標準76MY-MAXOK14.576520.7580J[81]標準76MY-MAXOK15.063520.7590I[90]標準76FX-MAXOK14.445920.7590J[91]標準76FX-MAXOK13.597620.75100I[100]標準76FY-MAXOK12.687820.75100J[101]標準76FY-MAXOK12.302420.75110I[110]標準76FX-MAXOK13.776920.75110J[111]標準76FX-MAXOK14.535920.75120I[120]標準74FZ-MINOK10.171120.75120J[121]標準74FZ-MINOK10.133920.75124I[124]標準74MY-MAXOK6.839720.75124J[125]標準74FX-MINOK6.833920.7512.2.2使用階段斜截面主壓應力驗算根據(jù)規(guī)范，由下表可知，斜截面主壓應力驗算符合要求。表12.2.2使用階段斜截面主壓應力驗算單元位置組合名稱類型驗算Sig_MAX(N/mm^2)Sig_AP(N/mm^2)1I[1]標準74MY-MAXOK6.891624.91J[2]標準74MY-MAXOK6.898324.910I[10]標準76FX-MAXOK14.190324.910J[11]標準76FX-MAXOK13.5724.920I[20]標準76FX-MAXOK15.731324.920J[21]標準76FX-MAXOK15.337424.930I[30]標準76FX-MAXOK14.891124.930J[31]標準76FX-MAXOK15.538124.940I[40]標準76MY-MAXOK13.731624.940J[41]標準76MY-MAXOK15.707624.950I[50]標準74FX-MAXOK15.178624.950J[51]標準74FX-MAXOK13.633824.960I[60]標準74FY-MAXOK14.861424.960J[61]標準74FY-MAXOK14.111624.970I[70]標準74FX-MAXOK14.244524.970J[71]標準74FX-MAXOK15.035424.980I[80]標準76MY-MAXOK14.759224.980J[81]標準76MY-MAXOK15.250624.990I[90]標準76FX-MAXOK14.508324.990J[91]標準76FX-MAXOK13.653424.9100I[100]標準76FY-MAXOK12.713524.9100J[101]標準76FY-MAXOK12.328724.9110I[110]標準76FX-MAXOK13.851424.9110J[111]標準76FX-MAXOK14.622124.9120I[120]標準74FZ-MINOK10.2724.9120J[121]標準74FZ-MINOK10.219124.9124I[124]標準74MY-MAXOK6.840124.9124J[125]標準74MY-MAXOK6.833924.91.2.3正截面抗裂驗算根據(jù)規(guī)范全預應力分段澆筑構件，下表中壓應力為正，可知正截面抗裂驗算符合要求。表12.2.3使用階段正截面抗裂驗算單元位置組合名稱短/長類型驗算Sig_MAX(N/mm^2)Sig_ALW(N/mm^2)1I[1]頻遇45短期MY-MINOK0.459901J[2]頻遇45短期MY-MINOK0.4335010I[10]頻遇45短期FX-MINOK2.4674010J[11]頻遇45短期FX-MINOK1.5821020I[20]頻遇45短期FX-MINOK2.9271020J[21]頻遇45短期FX-MINOK2.6458030I[30]頻遇45短期FX-MINOK2.4593030J[31]頻遇45短期FX-MINOK3.0158040I[40]頻遇45短期MY-MINOK2.5883040J[41]頻遇46短期MY-MAXOK1.3864050I[50]頻遇47短期FX-MINOK3.0001050J[51]頻遇47短期FX-MINOK1.9029060I[60]頻遇47短期FY-MINOK2.3996060J[61]頻遇47短期FY-MINOK1.4934070I[70]頻遇47短期FX-MINOK2.2466070J[71]頻遇47短期FX-MINOK2.8452080I[80]頻遇46短期MY-MAXOK1.2291080J[81]頻遇46短期MY-MAXOK0.4014090I[90]頻遇45短期FX-MINOK2.9097090J[91]頻遇45短期FX-MINOK2.14640100I[100]頻遇45短期FY-MINOK0.53020100J[101]頻遇45短期FY-MINOK0.0730110I[110]頻遇45短期FX-MINOK1.3890110J[111]頻遇45短期FX-MINOK1.91060120I[120]頻遇45短期FZ-MINOK0.88590120J[121]頻遇45短期FZ-MINOK0.90240124I[124]頻遇45短期MY-MINOK0.30970124J[125]頻遇41短期MX-MAXOK0.335801.2.4斜截面抗裂驗算全預應力混凝土現(xiàn)場澆筑構件斜截面混凝土主拉應力，下表壓應力為正，可知斜截面抗裂驗算遠小于最大容許值，符合標準。表12.2.4使用階段斜截面抗裂驗算單元位置組合名稱類型驗算Sig_MAX(N/mm^2)Sig_AP(N/mm^2)1I[1]頻遇41FX-MAXOK0-1.1721J[2]頻遇45FX-MINOK-0.001-1.17210I[10]頻遇45FX-MINOK-0.0031-1.17210J[11]頻遇45FX-MINOK-0.0034-1.17220I[20]頻遇45FX-MINOK-0.0007-1.17220J[21]頻遇45FX-MINOK-0.0007-1.17230I[30]頻遇46FX-MAXOK-0.0013-1.17230J[31]頻遇46FX-MAXOK-0.0014-1.17240I[40]頻遇46MY-MAXOK-0.0051-1.17240J[41]頻遇46MY-MAXOK-0.0085-1.17250I[50]頻遇44FX-MAXOK-0.0033-1.17250J[51]頻遇47FX-MINOK-0.0024-1.17260I[60]頻遇45FY-MAXOK-0.001-1.17260J[61]頻遇47FY-MINOK-0.0011-1.17270I[70]頻遇44FX-MAXOK-0.0017-1.17270J[71]頻遇44FX-MAXOK-0.002-1.17280I[80]頻遇46MY-MAXOK-0.0119-1.17280J[81]頻遇46MY-MAXOK-0.0182-1.17290I[90]頻遇45FX-MINOK-0.0018-1.17290J[91]頻遇45FX-MINOK-0.002-1.172100I[100]頻遇45FY-MINOK-0.0018-1.172100J[101]頻遇45FY-MINOK-0.002-1.172110I[110]頻遇46FX-MAXOK-0.0015-1.172110J[111]頻遇46FX-MAXOK-0.0018-1.172120I[120]頻遇45FZ-MINOK-0.0246-1.172120J[121]頻遇45FZ-MINOK-0.0261-1.172124I[124]頻遇41FX-MAXOK-0.0012-1.172124J[125]頻遇41FX-MINOK0-1.1721.2.5預應力筋拉應力驗算根據(jù)規(guī)范體內預應力鋼絞線最大拉應力，對與未開裂構件為，考慮到對稱鋼束拉應力差別不大，縱向鋼束共計284根而篇幅有限，因此每種形狀的鋼束僅展示一根，由下表可知施工階段縱向預應力鋼束小于0.75fpk=1395Mpa，使用階段鋼束最大拉應力均小于0.65fpk=1209Mpa，符合規(guī)范要求。表12.2.5受拉區(qū)鋼筋的拉應力驗算鋼束驗算Sig_