连续刚构桥—xxx特大桥主跨200m连续刚构计算书咨询报告0721.docx

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1、XX省赤水至望谟高速公路(仁怀至赤水段)施工图设计RCTJ-9合同段二郎河特大桥主桥(106+200+106)m 连续刚构咨询报告中交第二公路勘察设计研究院XX公司二。一。年七月5.4 荷载组合计算运营阶段时考虑了4组温度变化、4组强迫位移、2组制动力及2组顺桥向风 力，计算过程中按不利那么组合的原那么考虑2种组合：恒载+汽车+汽车制动力+墩不均匀沉降+体系温差+梯度温差+顺桥向组合风力；恒载+墩不均匀沉降+体系温差+梯度温差+顺桥向极端风力。5.5 上构箱梁验算结果（1）上构箱梁持久状况正常使用极限状态验算A、箱梁在正常使用极限状态下截面上、下边缘混凝土压应力验算规范限值:%/ W 05几=

2、7.75Mpa验算结果见后附表1,使用阶段箱梁截面上缘最大压应力为15.7MPa左右（中跨距离 跨中22m左右），下缘最大压应力为12.9MPa（主梁根部，靠跨中侧），规范限值不超过 0.5fCk=17.75 MPa,满足规范要求。标准值组合时上缘应力包络图示B、正常使用极限状态下预应力钢束应力验算规范限值：。pe+。p0.65fPk=1209MPa验算结果见后附表2,运营阶段预应力钢束应力验算，最大拉应力为1226MPa,虽 然略超规范限值，但幅度在2%以内，满足要求。C.箱梁在正常使用极限状态下混凝土主压应力验算阶段编号单元编号截面位置钢束编号钢束重心最大应力10094左截面6310.17

3、984.210094左截面6510.35986.310094左截面6710.53987.210094左截面6910.70986.910094左截血7210.88987.410094左截面739.801017.910094左截面759.98101710094左截面7710.15107210094左截面7910.15107110094左截面8110.151068.510094左截面8310.151067.910094左截面8510.141067.510095左截面810.311063.710095左截面1010.481077.810095左截面1210.481103.310095左截面1410.2

4、91147.710095左截面1610.291149.510095左截面1710.471132.410095左截面1910.461133.610095左截面2210.281151.410095左截面2410.281150.210095左截面2510.451133.910095左截面2710.451132.310095左截面2910.261141.110095左截面3110.441125.210095左截面3310.441122.910095左截面3510.431119.910095左截面3710.431116.910095左截面3910.431114.110095左截面4110.4211121

5、0095左截面4310.421110.310095左截面517.13990.810095左截面539.581052.410095左截面5510.23981.210095左截面5710.41985.110095左截面599.33985.5阶段编号单元编号截面位置钢束编号钢束重心最大应力10095左截面619.50987.710095左截面639.6899010095左截面659.8699310095左截面6710.03994.210095左截血6910.2199610095左截面7210.39995.510095左截面739.301026.310095左截面759.481024.410095左截

6、面779.661078.510095左截面799.661077.210095左截面819.651076.310095左截面839.651075.510095左截面859.651073.210096左截面1010.001064.310096左截面1210.001093.810096左截面149.811140.910096左截面169.811156.910096左截面179.991139.710096左截面199.981141.410096左截面229.801160.110096左截面249.791158.810096左截面259.97114210096左截面279.971141.210096左截

7、面299.781152.510096左截面319.961135.110096左截面339.961131.810096左截面359.95112910096左截面379.951125.710096左截面399.951122.410096左截面419.941119.210096左截面439.941116.810096左截面537.13992.910096左截面559.381052.210096左截面579.93991.410096左截面598.85991.810096左截面619.02994.3阶段编号单元编号截面位置钢束编号钢束重心最大应力10096左截面639.20995.910096左截面65

8、9.38999.410096左截面679.561002.110096左截面699.731003.210096左截血729.911004.310096左截面738.831033.410096左截面759.001032.710096左截面779.181086.610096左截面799.181085.110096左截面819.181083.510096左截面839.171082.210096左截面859.171080.910097左截面129.531078.710097左截面149.351130.310097左截面169.341156.810097左截面179.521144.710097左截面199

9、.521147.110097左截面229.331166.410097左截面249.331165.710097左截面259.511148.510097左截面279.501148.210097左截面299.321162.110097左截面319.491144.310097左截面339.491140.110097左截面359.491136.610097左截面379.48113410097左截面399.481130.310097左截面419.481126.510097左截面439.471122.510097左截面557.14998.210097左截面579.191054.110097左截面598.39

10、998.810097左截面618.561000.610097左截面638.741003.410097左截面658.921006.310097左截面679.091007.8阶段编号单元编号截面位置钢束编号钢束重心最大应力10097左截面699.271009.910097左截面729.45101010097左截面738.371041.710097左截面758.541040.310097左截血778.721095.410097左截面798.721092.710097左截面818.721090.810097左截面838.711088.910097左截面858.711087.210098左截面148.9

11、01114.510098左截面168.901145.210098左截面179.071145.610098左截面199.071152.610098左截面228.891172.710098左截面248.881172.110098左截面259.06115610098左截面279.061155.810098左截面298.87116910098左截面319.051152.510098左截面339.051149.310098左截面359.041144.910098左截面379.041141.110098左截面399.041138.110098左截面419.031134.110098左截面439.03112

12、9.910098左截面577.141003.510098左截面597.951003.310098左截面618.121006.610098左截面638.301009.410098左截面658.481011.810098左截面678.65101410098左截面698.831015.110098左截面729.011016.610098左截面737.92104810098左截面758.101047.110098左截面778.281102.9阶段编号单元编号截面位置钢束编号钢束重心最大应力10098左截面798.281100.910098左截面818.281098.710098左截面838.27109

13、5.510098左截面858.271093.310099左截血168.471124.710099左截面178.651129.710099左截面198.641151.910099左截面228.461174.110099左截面248.451174.710099左截面258.631157.610099左截面278.63115810099左截面298.441172.810099左截面318.621155.310099左截面338.621153.210099左截面358.611150.210099左截面378.611145.410099左截面398.611141.310099左截面418.601138.

14、110099左截面438.601133.510099左截面596.781001.810099左截面617.70100510099左截面637.871008.610099左截面658.051012.410099左截面678.231014.910099左截面698.401017.110099左截面728.581019.610099左截面737.501051.410099左截面757.681050.910099左截面777.85110610099左截面797.851103.810099左截面817.851101.810099左截面837.851099.810099左截面857.851097.6100

15、100左截面178.181096.6100100左截面198.171126.6100100左截面227.991167.9阶段编号单元编号截面位置钢束编号钢束重心最大应力100100左截面247.981170.5100100左截面258.161154.7100100左截面278.161156.5100100左截面297.971173.5100100左截血318.151156.1100100左截面338.141154.3100100左截面358.141152.8100100左截面378.141150.3100100左截面398.131145.7100100左截面418.131141.5100100

16、左截面438.131137.8100100左截面616.56992.2100100左截面637.401002.2100100左截面657.581005.6100100左截面677.751009.6100100左截面697.931013.7100100左截面728.111017.6100100左截面737.021052100100左截面757.201050.9100100左截面777.381107.2100100左截面797.381106100100左截面817.371104.3100100左截面837.371102100100左截面857.371100.1100101左截面197.731108

17、.1100101左截面227.551162.9100101左截面247.541172.9100101左截面257.721157.8100101左截面277.711161.4100101左截面297.531179.4100101左截面317.711162.4100101左截面337.701160.7100101左截面357.701159100101左截面377.691157.1100101左截面397.691154.5100101左截面417.691149.4阶段编号单元编号截面位置钢束编号钢束重心最大应力100101左截面437.681144.5100101左截面636.35996.81001

18、01左截面657.141008.6100101左截面677.311013.1100101左截血697.491017.2100101左截面727.671020.7100101左截面736.591056.2100101左截面756.761056.7100101左截面776.941112.4100101左截面796.941111.6100101左截面816.941110.1100101左截面836.931107.6100101左截面856.931105.4100102左截面227.131143.6100102左截面247.121174.5100102左截面257.301159.8100102左截面2

19、77.291163.8100102左截面297.111184.5100102左截面317.291166.3100102左截面337.281165100102左截面357.281163.3100102左截面377.281161.2100102左截面397.271158.9100102左截面417.271155.7100102左截面437.261150.4100102左截面656.16999.6100102左截面676.901017.1100102左截面697.081019.9100102左截面727.251024.2100102左截面736.171061100102左截面756.351061.5

20、100102左截面776.531119.2100102左截面796.521118100102左截面816.521117.1100102左截面836.521115.9100102左截面856.521112.9阶段编号单元编号截面位置钢束编号钢束重心最大应力100103左截面246.731154.2100103左截面256.901157.4100103左截面276.901166.4100103左截面296.721188.5100103左截血316.891171.1100103左截面336.891170.4100103左截面356.881169.4100103左截面376.881167.510010

21、3左截面396.881165100103左截面416.871161.9100103左截面436.871158100103左截面676.161019.6100103左截面696.681022.2100103左截面726.861027.1100103左截面735.781068.8100103左截面755.961068.4100103左截面776.131125.2100103左截面796.131124.4100103左截面816.131123.3100103左截面836.131122.1100103左截面856.131120.3100104左截面256.491136100104左截面276.4811

22、66.2100104左截面296.301194.2100104左截面316.481175.1100104左截面336.471175.5100104左截面356.471175.3100104左截面376.471174.2100104左截面396.461171.6100104左截面416.461168.7100104左截面436.461165.1100104左截面695.961023.3100104左截面726.451029.7100104左截面735.371074.2100104左截面755.551074.6100104左截面775.721131.8阶段编号单元编号截面位置钢束编号钢束重心最大应

23、力100104左截面795.721130.6100104左截面815.721128.7100104左截面835.721127.7100104左截面855.721126.1100105左截血276.101147.7100105左截面295.921198.6100105左截面316.091179.9100105左截面336.091180.9100105左截面356.091181.4100105左截面376.081180.6100105左截面396.081179.1100105左截面416.081176.5100105左截面436.071172.9100105左截面725.791027.510010

24、5左截面734.991081100105左截面755.171081.6100105左截面775.351138.4100105左截面795.341139.3100105左截面815.341138.2100105左截面835.341136.3100105左截面855.341134.2100105左截面1060.151133.1100106左截面295.571183.3100106左截面315.741181.1100106左截面335.741182.9100106左截面355.741184.6100106左截面375.731185.3100106左截面395.731184.5100106左截面415

25、.731182.6100106左截面435.721179.7100106左截面734.631063100106左截面754.821083.4100106左截面775.001142.9100106左截面795.001142.6100106左截面815.001142.5100106左截面834.991142.5阶段编号单元编号截面位置钢束编号钢束重心最大应力100106左截面854.991140.7100106左截面1040.161124.2100106左截面1060.161134.8100107左截面315.431154.1100107左截血335.421180.2100107左截面355.42

26、1183.6100107左截面375.421185.9100107左截面395.411186.7100107左截面415.411186.2100107左截面435.411184.1100107左截面754.501060100107左截面774.681139.8100107左截面794.681142.8100107左截面814.681144.8100107左截面834.681144.3100107左截面854.671143.7100107左截面1020.151119.8100107左截面1040.161125.3100107左截面1060.161135.9100108左截面335.141163.

27、3100108左截面355.141188.4100108左截面375.131192.1100108左截面395.131194.5100108左截面415.131195.2100108左截面435.121194.2100108左截面774.401131.3100108左截面794.401147.4100108左截面814.401150.4100108左截面834.401152.8100108左截面854.401153.6100108左截面1000.151115.1100108左截面1020.161121.8100108左截面1040.161127.8100108左截面1060.161130.11

28、00109左截面354.891173.6100109左截面374.891197.5规范限值:% 0.6 = 21.3”验算结果见后附表3,使用阶段箱梁截面最大主压应力为12.2MPa,规范限值不超 过0.6Lk=2L3MPa,满足规范要求。D、箱梁正截面抗裂验算按全预应力混凝土构件验算，分段浇筑结构短期效应组合下应力应满足： （Tst-0.8Tpc0验算结果见后附表4。主墩附近（靠边、中跨各30m）上缘出现拉应力，最大拉应力达1.5 MPa,不满足规 范全预应力构件要求。下缘均不出现拉应力，最小压应力出现在中跨跨中，为1.2MPa,满足规范全预应 力构件要求。按全预应力构件设计其短期效应组合下

29、的上、下缘应力包络如下列图所示，图中在主 梁线以下的区域表示出现拉应力。短期组合时上缘应力包络图（全预应力构件验算）短期组合时下缘应力包络图（全预应力构件验算）E、箱梁斜截面抗裂验算按全预应力混凝土构件验算，规范限值：o tpW0.40ftk=L096MPa验算结果见后附表5,结果显示，在不考虑竖向预应力的效应时，全桥主梁最大主拉应力为0.7MPa,满足规范要求。阶段编号单元编号截面位置钢束编号钢束重心最大应力100109左截面394.881201.4100109左截面414.881203.4100109左截面434.881203.8100109左截面794.161139.7100109左截血

30、814.151154.9100109左截面834.151158.1100109左截面854.151160.5100109左截面980.151110.2100109左截面1000.161115.1100109左截面1020.161120.7100109左截面1040.161118.5100109左截面1060.171118.9100110左截面374.681179.6100110左截面394.671202100110左截面414.671205.1100110左截面434.671207.2100110左截面813.951143.9100110左截面833.941158.3100110左截面853.

31、941161.5100110左截面924.491146.2100110左截面960.151101.4100110左截面980.161107.8100110左截面1000.161112.7100110左截面1020.161118.2100110左截面1040.171116.4100110左截面1060.171116.4100111左截面394.501188.3100111左截面414.501210.1100111左截面434.501213.2100111左截面833.781150100111左截面853.771164.4100111左截面904.321137.4100111左截面924.3211

32、52.1100111左截面940.151092.8100111左截面960.161099.7100111左截面980.161105.5阶段编号单元编号截面位置钢束编号钢束重心最大应力100111左截面1000.161110.4100111左截面1020.171116.5100111左截面1040.171114.4100111左截面1060.171114.4100112左截血414.371202.1100112左截面434.371222.9100112左截面853.651163100112左截面884.371134.8100112左截面904.191146.6100112左截面924.191161100112左截面940.151101.3100112左截面960.161098.2100112左截面980.161114.7100112左截面1000.161109.6100112左截面1020.171126.9100112左截面1040.171113.3100112左截面1060.171112.5100113左截面434.281226.3100113左截面884.28