预应力连续梁桥毕业设计

1、 目 录第1章 概 述1.1 设计依据及标准1.2桥型及纵、横断面设计1.3毛截面几何特性第2章 主梁内力计算2.1单元划分2.2恒载内力计算2.3 内力影响线计算2.4 活载内力计算2.5温度及基础沉降次内力计算2.6内力组合（一）第3章 预应力钢束估算与布置3.1 钢束估算原理3.2钢束估算3.3 钢束布置3.4净、换算截面几何特性计算第4章 预应力损失及有效预应力计算4.1预应力损失种类及相应的计算方法4.2钢筋的有效预应力计算原理4.3钢束预应力损失及有效预应力计算第5章 配束后主梁内力计算及内力组合（二）5.1施工阶段主梁内力计算5.2活载内力、温度及基础沉降次内力计算5.3混凝土收

2、缩、徐变次内力计算5.4内力组合（二）第6章 主梁截面强度验算6.1截面强度计算原理6.2强度验算第7章 应力、变形及其他验算7.1预加应力阶段各截面混凝土法向应力计算7.2正常使用阶段混凝土法向应力及主应力计算与验算7.3正常使用阶段钢束应力计算与验算7.4 变形计算与验算7.5变形验算及预拱度设置主要参考文献结 束 语前 言 关键词： This design is about the superstructure designing of Pangjia Cun Bridge which adopt building way of simple-span to construction.

3、First, people prepared to make girders then hung them to be a continous bridge, and they adopted the same hight of changing section box girder of which the span is twenty-five meters, and the total bridge is divided into 6 spans with the whole lenth of 150 meters.There are seven chapters in the dire

4、ction. The first chapter is sketch, its about the pattern and dimension of bridge. The second is about the internal force calculating,including dead load、living load internal force、temperature and abutment subsided sequence internal force and compose load.The third is about the estimate and arrange

5、of the reinforced steel. The fourth, loss estimating.The fifth, calculate the intenal foce after distributing the steel .The sixth, check of strength. The last chapter, the control of the stress and construction phase, and set the advanced arch degree.continous bridge，simple-span to contiinuous cons

6、truction , changing section box girder，loading, stress. 第1章 概 述 表1-1 毛截面几何特性计算截面梁高(cm)底板厚(cm)腹板宽(cm)A(c)Yx(cm)I(cm)Wx=I/Yx预制中梁跨中12515158106.2576.527616096519.22210336.1预制中梁支点125252510606.2570.82119471469.76274939.2预制边梁跨中12515158856.2579.997616620237.38207759.2预制边梁支点125252511356.2573.903820170346.227

7、2927.1成桥后中梁跨中12525159606.2582.925618249522.89220071成桥后中梁支点125252512106.2576.604722363017.77291927.5成桥后边梁跨中12515159606.2582.925618249522.89220071成桥后边梁支点125252512106.2576.604722363017.77291927.5第2章 主梁内力计算节点号与控制截面对应关系见表2-1 表2-1 节点号与控制截面对应表节点号2369121516控制截面永久支点变化点L/4L/23L/4变化点临时支点节点号18202124273033控制截面永久

8、支点临时支点变化点L/4L/23L/4变化点节点号34363839424548控制截面临时支点永久支点临时支点变化点L/4L/23L/4节点号51525456576063控制截面变化点临时支点永久支点临时支点变化点L/4L/2节点号66697072747578控制截面3L/4变化点临时支点永久支点临时支点变化点L/4节点号81848788909293控制截面L/23L/4变化点临时支点永久支点临时支点变化点节点号9699102105106控制截面L/4L/23L/4变化点永久支点 表2-2 节点坐标表节 点 号12345678X坐标（m）00.42.03.55.06.558.5510.55节

9、点 号910111213141516X坐标（m）12.714.716.718.8520.1721.4922.824.5节 点 号1718192021222324X坐标（m）24.8225.025.1825.527.228.5529.931.25节 点 号2526272829303132X坐标（m）33.3535.4537.539.641.743.7545.146.45节 点 号3334353637383940X坐标（m）47.849.549.8250.050.1850.552.253.55节 点 号4142434445464748X坐标（m）54.956.2558.3560.4562.564.

10、666.768.75节 点 号4950515253545556X坐标（m）70.171.4572.874.574.8275.075.1875.5节 点 号5758596061626364X坐标（m）77.278.5579.981.2583.3585.4587.589.6节 点 号6566676869707172X坐标（m）91.793.7595.196.4597.899.599.82100.0节 点 号7374757677787980X坐标（m）100.18100.5102.2103.55104.9106.25108.35110.45节 点 号8182838485868788X坐标（m）112

11、.5114.6116.7118.75120.1121.45122.8124.5节 点 号8990919293949596X坐标（m）124.82125.0125.18125.5127.2128.51129.83131.15节 点 号979899100101102103104X坐标（m）133.3135.3137.3139.45141.45143.45145.0146.5节 点 号105106107X坐标（m）148.0149.6150.0 表2-3 预制中箱梁一期恒载集度(kN/m) 单元号1231415161920213233集 度26.52523.420.27523.426.52523.4

12、20.27523.4单元号343738395051525556576869集 度26.52523.420.27523.426.52523.420.27523.4单元号70737475868788919293104105集 度26.52523.420.27523.426.52523.420.27523.4单元号106 集 度26.525表2-4 预制边箱梁一期恒载集度单元号1231415161920213233集 度28.425.27522.1525.27528.425.27522.1525.275单元号343738395051525556576869集 度28.425.27522.1525.2

13、7528.425.27522.1525.275单元号70737475868788919293104105集 度28.425.27522.1525.27528.425.27522.1525.275单元号106集 度28.4 表2-5 成桥后箱梁一期恒载集度(kN/m) 单元号1231415161920213233集 度30.2527.13824.02527.13830.2527.13824.02527.138单元号343738395051525556576869集 度30.2527.13824.02527.13830.2527.13824.02527.138单元号7073747586878891

14、9293104105集 度30.2527.13824.02527.13830.2527.13824.02527.138单元号106集 度30.25表2-6 第一施工阶段的恒载内力(边梁)截面号1001900 2左11.36-2.27E+00 20左9.09E+00-1.45E+00 2右271.8-2.27E+00 20右2.71E+02-1.45E+003231.43.99E+02212.28E+024.21E+024198.27.21E+02221.98E+027.09E+0251659.94E+02231.68E+029.56E+026130.71.22E+03241.38E+021.1

15、6E+03786.41.44E+03259.19E+011.41E+03842.121.57E+03264.54E+011.55E+03续表2-69-5.4871.61E+03273.49E-111.60E+0310-49.771.55E+0328-4.65E+011.55E+0311-94.051.41E+03299.30E+011.41E+0312-141.71.16E+0330-1.38E+021.16E+0313-170.99.49E+0231-1.68E+029.56E+0214-200.17.04E+0232-1.98E+027.09E+0215-229.14.23E+0233-2

16、.28E+024.21E+02 16左-272.1-1.45E+00 34左2.71E+02-1.45E+00 16右9.085-1.45E+00 34右9.09E+00-1.45E+0017003500表2-7 第四施工阶段的恒载内力截面号 QM截面号 QM1-7.04E-11-9.43E+0128-3.54E+014.83E+02 2左1.21E+01-9.67E+0129-8.58E+013.56E+02 2右2.40E+02-9.67E+0130-1.35E+021.30E+02续表2-731.96E+022.66E+0231-1.68E+02-7.44E+0141.60E+025.3

17、3E+0232-2.00E+02-3.22E+0251.24E+027.46E+0233-2.32E+02-6.13E+0268.70E+019.09E+0234-2.79E+02-1.07E+0373.90E+011.04E+0335-2.88E+02-1.16E+0389.06E+001.07E+03 36左2.94E+02-1.21E+039-6.07E+019.90E+02 36右3.03E+02-1.21E+0310-1.09E+028.21E+02372.98E+02-1.16E+0311-1.57E+025.56E+02382.98E+02-1.07E+0312-2.08E+02

18、1.64E+02392.42E+02-5.94E+0213-2.40E+02-1.32E+02402.10E+02-2.89E+0214-2.72E+02-4.69E+02411.77E+02-2.80E+0115-3.03E+02-8.46E+02421.45E+021.89E+0216-3.49E+02-1.41E+03439.44E+014.41E+0217-3.59E+02-1.53E+03444.40E+015.86E+02 18左3.65E+02-1.59E+0345-5.24E+006.26E+02 18右3.24E+02-1.59E+0346-5.57E+015.62E+021

19、93.18E+02-1.54E+0347-1.06E+023.93E+02203.09E+02-1.43E+0348-1.55E+021.25E+02212.62E+02-9.26E+0249-1.88E+02-1.06E+02222.30E+02-5.93E+0250-2.20E+02-3.81E+02231.98E+02-3.05E+0251-2.53E+02-7.00E+02241.65E+02-5.98E+0152-2.99E+02-1.19E+03251.15E+022.34E+0253-3.08E+02-1.29E+03266.43E+014.22E+02 54左3.14E+02-

20、1.34E+03271.51E+015.04E+02 54右3.14E+02-1.34E+03 表2-9 节点影响线数据表 截面6号节点截面9号节点截面12号节点截面18号节点剪力弯矩剪力弯矩剪力弯矩剪力弯矩10.0207-0.2710.02065-0.143110.02065-0.016091-0.00550.1082002002002004-0.162.0984-0.15961.1174-0.15960.135640.04201-0.82576-0.3144.1886-0.31362.266-0.31360.331260.07958-1.56460.68644.1887-0.41143.0

21、517-0.41140.521370.1003-1.97180.49432.9999-0.60214.8549-0.60211.15290.1277-2.51190.39792.40790.39794.85410-0.68611.603100.1312-2.579110.23611.419110.23612.87112-0.83942.936120.1119-2.199120.16060.9607120.16061.948120.16062.936130.097-1.906140.08090.481140.080890.9785140.080891.476150.05279-1.037160.

22、00980.0579160.009770.118160.009770.1781170.00484-0.09503170.00350.0205170.003450.04169170.003450.06294180019-0.003-0.0219-0.0034-0.040819-0.0034-0.06161190.9951-0.0831920-0.009-0.05520-0.0092-0.111220-0.0092-0.1679200.9861-0.226724-0.074-0.44124-0.0745-0.898824-0.0745-1.357240.7792-1.83227-0.077-0.4

23、5427-0.0767-0.926227-0.0767-1.398270.4932-1.88830-0.041-0.2430-0.0406-0.489430-0.0406-0.7387300.2107-0.997434-0.003-0.01634-0.0027-0.032134-0.0027-0.04841340.01286-0.065363600360036003600380.00250.0148380.002510.03026380.002510.0456738-0.01210.06167 续表2-9390.00990.0585390.009880.1193390.009880.18013

24、9-0.04780.2431450.02090.1236450.020880.252450.020880.380345-0.1010.5135480.0110.0653480.011030.1331480.011030.20148-0.05340.2714510.00350.0205510.003460.04171510.003460.0629651-0.01670.085520.00070.0043520.000720.00873520.000720.0131752-0.00350.01778540054005400540056-7.00E-04-0.00456-0.0007-0.00825

25、6-0.0007-0.01243560.0033-0.0167857-0.003-0.01657-0.0027-0.032557-0.0027-0.049570.01301-0.0661663-0.006-0.03463-0.0057-0.068663-0.0057-0.1036630.0275-0.139966-0.003-0.01866-0.003-0.036366-0.003-0.0548660.01455-0.0739870-2.00E-04-0.00170-0.0002-0.002470-0.0002-0.0036700.00096-0.00486720072007200720074

26、0.00020.0011740.000190.00225740.000190.00339774-0.00090.004587780.00150.009780.001510.01827780.001510.0275878-0.00730.03723840.00080.005840.000840.01017840.000840.0153684-0.00410.02074870.00030.0016870.000270.00324870.000270.00489687-0.00130.00661886.00E-050.0003885.70E-050.00069885.70E-050.00103588

27、-0.00030.001397900090009000900092-5.00E-05-3.00E-0492-5.00E-05-0.000792-5.00E-05-0.00098920.00026-0.0013396-5.00E-04-0.00396-0.0005-0.005596-0.0005-0.00833960.00221-0.01125102-3.00E-04-0.002102-0.0003-0.0039102-0.0003-0.005931020.00157-0.008105-9.00E-05-5.00E-04105-9.00E-05-0.0011105-9.00E-05-0.0016

28、31050.00043-0.0022106001060010600106001072.00E-050.00011072.20E-050.000271072.20E-050.000409107-0.00010.000553表2-10 节点影响线数据表截面24号节点截面27号节点截面30号节点截面36号节点剪力弯矩剪力弯矩剪力弯矩剪力弯矩1-0.0050.07291-0.010.0391-0.0050.004210.0015-0.029420020020020040.042-0.55840.042-0.2940.042-0.0324-0.0110.224670.1003-1.33170.1-0.7

29、70.1003-0.0777-0.0270.5361100.1312-1.741100.131-0.92100.1312-0.10110-0.0360.7014130.097-1.287130.097-0.68130.097-0.07513-0.0260.5186160.0132-0.175160.013-0.09160.0132-0.0116-0.0040.0706119-0.0050.06541900.03519-0.0050.0038190.0013-0.026323-0.1652.23523-0.171.20223-0.1650.1686230.0431-0.8472续表2-1024-

30、0.2213.01724-0.221.63724-0.2210.2565240.0561-1.103240.77923.01725-0.312.40425-0.3130.4479250.0755-1.483250.6872.2626-0.413.28326-0.410.7209260.0923-1.814260.591.64627-0.514.2527-0.5071.083270.1046-2.057270.49321.167270.4934.2528-0.6061.567280.1114-2.19290.29880.5007290.2992.36830-0.7892.933300.1007-

31、1.98300.21070.2989300.2111.616300.21072.933310.0886-1.742340.01290.0132340.0130.094340.01290.1739350.0046-0.0895350.00450.0047350.0050.033350.00450.06153600360036003600361037-0.004-0.005370-0.0337-0.004-0.06370.9954-0.088640-0.07-0.07240-0.07-0.5140-0.07-0.944400.8907-1.38941-0.086-0.08941-0.09-0.63

32、41-0.086-1.168410.84-1.71944-0.108-0.11144-0.11-0.7844-0.108-1.458440.5967-2.14647-0.072-0.07447-0.07-0.5247-0.072-0.971470.3032-1.4350-0.028-0.02950-0.03-0.2150-0.028-0.385500.1088-0.56625400540054005400580.0190.0195580.0190.138580.0190.256858-0.0710.3781620.02940.0301620.0290.214620.02940.396962-0

33、.110.5844660.01460.0149660.0150.106660.01460.196866-0.0540.2897700.0010.001701.00E-030.007700.0010.012970-0.0040.01902710.00030.0003713.00E-040.002710.00030.004671-0.0010.00673720072007200720073-3.00E-04-3.00E-04730073-3.00E-04-0.004730.0012-0.006676-0.005-0.00576-0.01-0.0476-0.005-0.07760.0194-0.10

34、3579-0.008-0.00879-0.01-0.0679-0.008-0.109790.0301-0.160280-0.008-0.00880-0.01-0.0680-0.008-0.109800.0303-0.161185-0.003-0.003850-0.0285-0.003-0.042850.0117-0.062488-3.00E-04-3.00E-04880088-3.00E-04-0.004880.001-0.00559000900090009000911.00E-041.00E-04911.00E-047.00E-04911.00E-040.001391-4.00E-040.0

35、019950.00190.002950.0020.014950.00190.025995-0.0070.03819960.00220.0023960.0020.016960.00220.029996-0.0080.044051000.00230.00241000.0020.0171000.00230.0312100-0.0090.045871050.00040.00041054.00E-040.0031050.00040.0059105-0.0020.0086310600106001060010600107-1.00E-04-1.00E-0410700107-1.00E-04-0.001107

36、0.0004-0.0022 表2-11 边跨等刚度简支主梁荷载横向分布影响线 梁号 p=1位置(主梁轴线)1234510.10.4250.2810.150.0850.0590.20.5230.2950.1140.0450.0230.10330.4280.2810.1490.0840.05830.10.150.2160.2680.2160.150.20.1140.2270.3180.2270.1140.10330.1490.2160.270.2160.149 表2-12 截面号汽车MaxM汽车MinM汽车MaxQ 汽车MinQ 剪力(kN)弯矩(kN.m)剪力(kN)弯矩(kN.m)剪力(kN)

37、弯矩(kN.m)剪力(kN)弯矩(kN.m)1000000-345.602左00350.2-116.100350.1-6.4132右007.184-116.1356.3-0.7188-38.2303327.9463.4-6.691-111.6321.4443.1-38.1-34.114289.1818.3-6.688-123.2292.4786-60.83619.55-5.7561106-38.09-1492641054-84.67847.16-39.181332-38.09-201.6235.41255-105.2986.37-83.091530-36.9-260.4197.91395-13

38、010868-126.11614-36.13-320.3164.51441-168.11197992.061576-34.55-377.6131.91398-204.111781051.991444-33.94-435.9102.81263-246.2111011-247.21226-33.11-487.377.451081-277.8896.712-22.89928.2-33.1-552.153.2838.4-307.4570.913-298.1700.3-48.26-596.640.28680-329.2354.2续表2-1214-281.7491.2-85.9-683.528.34511

39、.9-350.8115.615-5.016324.3-117.1-813.217.91346.9-366.1-186.3164.121203.1-306.3-109410.39224.5-395.7-536.7177.4205.9-312.1-118410.39227.3-395.7-648.918左-8.906207.8320.6-1236-10.4229.1402.8-656.618右-44.77207.8168.1-1236393.2-715.7-50.31227.819-44.45201.7163.8-1206390.1-668.5-50.31219.820-39.47191.1157

40、.9-1156384.7-586.6-50.15205.621271.8337.6121.8-925.2355.7-194.4-49.86146.3220.3365537.389.51-789.9331.886.4-51.05104.523298.475861.54-801.8307.4333.8-64.36609.224298.2101538.88-645.8282.8537.9-78.02717.725221.9115038.46-577.9244.4786.4-103.1848.326179.3131538.02-510.9206.7933.9-137.7972.327132.5135437.62-448171.3987.5-171.1995.92889.621313-25.71-463.8137.1957.5-206932.229-222.81167-25.51-509.8106.9866.6-251.1821.430-260908.5-25.42-553.980.41725.2-287.4582.631-263.6736.1-52.2-59664.9613.3-306.9358.8329.87755