桥梁设计计算书

1、第一章 概 述1.1 九江大桥引桥桥概述1.2 设计的基本数据第二章 主桥方案确定2.1 桥型选择及孔径划分2.2 主梁截面形式与截面尺寸拟定第三章 内力计算3.1 桥梁结构体系分析3.2 单元划分3.3 毛截面几何特性3.4 恒载内力计算3.5 活载内力计算3.6 收缩、徐变次内力计算3.7 荷载组合第四章 预应力钢束估算与布置4.1 钢束估算4.2 钢束布置第五章 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 混凝土收缩、徐变次内力计算（二）5.3 内力组合（二）第六章 强度计算与验算6.1强度验算原理6.2 正截面强度验算结果第七章 应力、变形验算7.1 应力验算

2、7.2 变形验算及预拱度设置第八章 结论与思考参考文献 致 谢 简支转连续一般先架设预制主梁，形成简支梁状态；进而再将主梁在墩顶连成整体，最终形成连续梁体系。由于简支转连续桥在施工过程中常存在体系转换，必须依据具体的施工过程来分析结构的受力。施工的第一阶段是预制架设形成简支梁，此阶段主桥承受一期恒载自重产生的内力及在简支梁上施加的预加力；第二阶段首先浇筑墩顶连续段混凝土，待混凝土达到要求的强度后张拉墩顶负弯矩束(局部短束)，最终形成连续梁。连续梁成桥状态主要承受二期恒载、活载、温度、支座沉降产生的内力以及负弯矩束的预加力、预加力的二次矩、徐变二次矩等。由上面的分析可知，简支转连续梁桥跨中正弯矩

3、要比现浇一次落架大，而支点负弯矩要比现浇一次落架小。因此，在主梁内要配置足够数量的正弯矩柬筋，以满足连续梁状态的承载要求和简支状态下承受结构自重和施工荷载的需要。简支转连续梁桥施工程序对结构内力也有一定影响。目前施工有两种做法：一种是先将每片简支梁转换为连续梁后，再进行横向整体化；另外一种做法是先将简支梁横向整体化后，再进行结构的体系转换。前者按平面结构进行计算分析较为合理；而后者体系转换后已属空间结构，要进行较为精确分析，比较繁杂。因此，本设计采用第一种施工程序，以便同所采用的结构分析软件的基本模式相吻合，提高计算分析的可靠性。1.2.2 主要材料1.2.3 桥面铺装1.2.4 施工方式1.

4、2.5 温度影响1.2.6 设计规范2.2.1 截面形式及梁高2.2.2 横截面尺寸2.2.3箱梁底板厚度设置2.2.4 腹板宽度设置2.2.5横隔板设置错误!未指定主题。3.4.1预制箱梁一期恒载集度计算截面号剪力(kN)弯矩()截面号剪力(kN)弯矩()13.33E+023.34E-11563.08E+021.72E-1123.19E+021.63E+02572.94E+021.50E+0233.04E+023.19E+02582.81E+022.94E+0242.90E+024.67E+02592.68E+024.31E+0252.76E+026.09E+02602.18E+029.42

5、E+0262.16E+021.13E+03611.66E+021.35E+0371.58E+021.52E+03621.14E+021.64E+0381.00E+021.79E+03635.99E+011.82E+0394.36E+011.94E+03645.28E+001.89E+0310-1.21E+011.97E+0365-5.03E+011.84E+0311-6.67E+011.89E+0366-1.07E+021.68E+0312-1.20E+021.69E+0367-1.65E+021.39E+0313-1.73E+021.38E+0368-2.23E+029.86E+0214-2

6、.25E+029.66E+0269-2.82E+024.56E+0215-2.75E+024.42E+0270-2.97E+023.11E+0216-2.88E+023.01E+0271-3.11E+021.59E+0217-3.01E+021.54E+0272-3.25E+02-2.81E-1218-3.15E+021.72E-11743.25E+021.17E-11203.08E+024.63E-11753.11E+021.59E+02212.94E+021.50E+02762.97E+023.11E+02222.81E+022.94E+02772.82E+024.56E+02232.68

7、E+024.31E+02782.23E+029.86E+02242.18E+029.42E+02791.65E+021.39E+03251.66E+021.35E+03801.07E+021.68E+03261.14E+021.64E+03815.03E+011.84E+03275.99E+011.82E+0382-5.28E+001.89E+03285.28E+001.89E+0383-5.99E+011.82E+0329-5.03E+011.84E+0384-1.14E+021.64E+0330-1.07E+021.68E+0385-1.66E+021.35E+0331-1.65E+021

8、.39E+0386-2.18E+029.42E+0232-2.23E+029.86E+0287-2.68E+024.31E+0233-2.82E+024.56E+0288-2.81E+022.94E+0234-2.97E+023.11E+0289-2.94E+021.50E+0235-3.11E+021.59E+0290-3.08E+022.68E-1236-3.25E+02-2.81E-12923.15E+021.72E-11383.25E+02-4.65E-11933.01E+021.54E+02续表3.3393.11E+021.59E+02942.88E+023.01E+02402.97

9、E+023.11E+02952.75E+024.42E+02412.82E+024.56E+02962.25E+029.66E+02422.23E+029.86E+02971.73E+021.38E+03431.65E+021.39E+03981.20E+021.69E+03441.07E+021.68E+03996.67E+011.89E+03455.03E+011.84E+031001.21E+011.97E+0346-5.28E+001.89E+03101-4.36E+011.94E+0347-5.99E+011.82E+03102-1.00E+021.79E+0348-1.14E+02

10、1.64E+03103-1.58E+021.52E+0349-1.66E+021.35E+03104-2.16E+021.13E+0350-2.18E+029.42E+02105-2.76E+026.09E+0251-2.68E+024.31E+02106-2.90E+024.67E+0252-2.81E+022.94E+02107-3.04E+023.19E+0253-2.94E+021.50E+02108-3.19E+021.63E+0254-3.08E+021.72E-11109-3.33E+024.27E-12错误!未指定主题。错误!未指定主题。二期恒载内力截面号剪力(kN)弯矩()截

11、面号剪力(kN)弯矩()1172056212-820216383.757203-717315416358194-617414623859186-522513730960149-170610055861113105763.97316276.2303827.48276339.64259-9.13846643.147010-45.778865-33.443811-82.265466-7032912-11944367-10714413-15515568-143-11814-192-20969-180-45715-228-65070-188-54916-237-76771-197-64517-246-8

12、8772-206-74618-254-101073左214-85119左263-114073右206-85119右229-114074197-75020221-103075189-65421212-92176180-56122203-81877171-47423194-71878135-15224158-3487998.392.525121-54.88061.72602684.91628125.2352续表3.42748.330282-11.43662811.836583-47.930429-24.835184-84.416530-61.326185-121-50.731-97.893.686

13、-158-34332-134-15087-194-71233-171-47188-203-81134-180-55889-211-91535-188-65090-220-102036-197-74791左229-114037左214-84791右263-114037右214-84792254-114038206-74293246-88139197-64294237-76040188-54695228-64441179-45496192-20342143-1159715516043106147981184484469.83329981.96584533.344010045.479246-3.24

14、4711018.8784947-39.8426102-27.782948-76.3304103-64.273349-113106104-10155950-149-170105-13730951-186-522106-14623952-195-617107-15516353-203-716108-16383.954-212-820109172055左221-929-55右221-929-错误!未指定主题。错误!未指定主题。3.4.3成桥后箱梁后一期恒载集度截面号剪力(kN)弯矩(kN.m)截面号剪力(kN)弯矩(kN.m)15.20E+020565.39E+02-8.91E+0224.96E+0

15、22.54E+02575.15E+02-6.27E+0234.73E+024.96E+02584.93E+02-3.75E+0244.49E+027.27E+02594.71E+02-1.35E+0254.25E+029.45E+02603.80E+027.59E+0263.26E+021.73E+03612.89E+021.46E+0372.28E+022.31E+03621.97E+021.97E+0381.30E+022.69E+03631.03E+022.29E+0393.38E+012.86E+03648.70E+002.41E+0310-6.16E+012.832E+0365-8.

16、67E+012.32E+0311-1.56E+022.60E+0366-1.83E+022.04E+0312-2.49E+022.18E+0367-2.80E+021.55E+0313-3.42E+021.56E+0368-3.79E+028.61E+0214-4.33E+027.43E+0269-4.78E+02-3.81E+0115-5.24E+02-2.62E+0270-5.02E+02-2.83E+0216-5.45E+02-5.29E+0271-5.25E+02-5.40E+0217-5.68E+02-8.07E+02725.49E+02-8.08E+0218-5.92E+02-1.

17、10E+0373左5.73E+02-1.09E+0319左6.15E+02-1.40E+0373右5.64E+02-1.09E+0319右5.72E+02-1.40E+03745.40E+02-8.13E+02续表3.5205.48E+02-1.12E+03755.16E+02-5.49E+02215.25E+02-8.51E+02764.93E+02-2.97E+02225.02E+02-5.94E+02774.69E+02-5.62E+01234.80E+02-3.49E+02783.70E+028.24E+02243.90E+025.65E+02792.71E+021.50E+03252

18、.98E+021.29E+03801.74E+021.96E+03262.06E+021.82E+03817.77E+012.23E+03271.13E+022.15E+0382-1.77E+012.29E+03281.82E+012.29E+0383-1.12E+022.16E+0329-7.72E+012.23E+0384-2.06E+021.82E+0330-1.74E+021.97E+0385-2.98E+021.29E+0331-2.71E+021.50E+0386-3.89E+025.71E+0232-3.69E+028.26E+0287-4.80E+02-3.42E+0233-4

19、.68E+02-5.32E+0188-5.02E+02-5.87E+0234-4.92E+02-2.93E+0289-5.24E+02-8.44E+0235-5.16E+02-5.45E+0290-5.48E+02-1.11E+0336-5.40E+02-8.09E+0291左5.72E+02-1.40E+0337左5.64E+02-1.09E+0391右6.15E+02-1.40E+0337右5.73E+02-1.09E+03925.91E+02-1.09E+03385.49E+02-8.05E+02935.68E+02-8.00E+02395.25E+02-5.36E+02945.45E+

20、02-5.22E+02405.02E+02-2.79E+02955.23E+02-2.55E+02414.78E+02-3.45E+01964.33E+027.49E+02423.79E+028.64E+02973.42E+021.56E+03432.80E+021.56E+03982.49E+022.18E+03441.83E+022.04E+03991.56E+022.61E+03458.65E+012.33E+031006.13E+012.832E+0346-8.85E+002.41E+03101-3.41E+012.87E+0347-1.03E+022.29E+03102-1.31E+

21、022.69E+0348-1.97E+021.97E+03103-2.28E+022.32E+0349-2.89E+021.46E+03104-3.26E+021.74E+0350-3.80E+027.60E+02105-4.25E+029.46E+02514.71E+02-1.34E+02106-4.49E+027.27E+0251-4.71E+02-1.34E+02107-4.73E+024.97E+0252-4.93E+02-3.75E+02108-4.97E+022.54E+0253-5.15E+02-6.27E+021095.21E+020545.39E+02-8.91E+02-55

22、左5.63E+02-1.17E+03-55右5.63E+02-1.17E+03-错误!未指定主题。错误!未指定主题。3.5.1冲击系数和车道折减系数3.5.2计算主梁的荷载横向分布系数3.5.3活载内力计算截面号MaxM（kN.m）MinM（kN.m）MaxQ（kN）MinQ（kN.m）10.00E+000.00E+003.48E+02-3.51E+0121.74E+02-1.76E+013.35E+02-3.80E+0133.35E+02-3.51E+013.25E+02-4.11E+0144.85E+02-5.27E+013.15E+02-4.42E+0156.25E+02-7.02E+0

23、13.04E+02-4.71E+0161.09E+03-1.43E+022.62E+02-5.60E+0171.39E+03-2.16E+022.17E+02-8.13E+0181.54E+03-2.89E+021.78E+02-1.04E+0291.57E+03-3.47E+021.41E+02-1.37E+02101.50E+03-4.05E+021.07E+02-1.89E+02111.43E+03-4.66E+027.65E+01-2.31E+02121.22E+03-5.21E+024.81E+01-2.70E+02138.88E+02-5.84E+022.39E+01-3.16E+

24、02144.66E+02-6.90E+022.00E+01-3.49E+02151.91E+02-9.24E+029.53E+00-3.77E+02161.95E+02-9.87E+029.56E+00-3.87E+02172.02E+02-1.06E+039.59E+00-3.97E+02182.07E+02-1.21E+039.59E+00-4.07E+02192.13E+02-1.36E+039.62E+004.17E+02192.13E+02-1.36E+033.93E+02-4.75E+01201.96E+02-1.28E+033.82E+02-4.74E+01211.72E+02-

25、1.20E+033.73E+02-4.72E+01221.53E+02-1.13E+033.64E+02-4.71E+01232.53E+02-1.06E+033.54E+02-4.69E+01245.16E+02-8.50E+023.15E+02-6.15E+01259.02E+02-7.18E+022.74E+02-7.10E+01261.10E+03-6.44E+022.33E+02-7.91E+01271.23E+03-5.76E+021.93E+02-1.13E+02281.22E+03-5.08E+021.45E+02-1.50E+02续表3.8291.22E+03-5.17E+0

26、21.10E+02-1.89E+02301.10E+03-5.61E+028.70E+01-2.28E+02318.52E+02-6.05E+028.16E+01-2.84E+02325.21E+02-7.09E+026.99E+01-3.20E+02333.73E+02-9.35E+025.79E+01-3.52E+02343.48E+02-9.97E+025.67E+01-3.64E+02353.32E+02-1.07E+035.68E+01-3.74E+02363.57E+02-1.14E+035.70E+01-3.85E+02373.86E+02-1.23E+035.72E+013.9

27、6E+02373.86E+02-1.23E+033.93E+02-4.74E+01383.69E+02-1.15E+033.82E+02-4.74E+01393.57E+02-1.08E+033.74E+02-4.74E+01403.86E+02-1.01E+033.65E+02-4.86E+01414.13E+02-9.43E+023.55E+02-5.23E+01425.41E+02-7.11E+023.16E+02-6.24E+01438.73E+02-6.05E+022.76E+02-7.44E+01441.13E+03-5.49E+022.35E+02-8.35E+01451.26E

28、+03-5.03E+021.94E+02-1.16E+02461.25E+03-4.52E+021.45E+02-1.52E+02471.25E+03-4.92E+021.10E+02-1.91E+02481.12E+03-5.45E+027.90E+01-2.31E+02498.70E+02-5.97E+027.35E+01-2.83E+02505.25E+02-6.96E+026.14E+01-3.22E+02513.50E+02-9.28E+024.90E+01-3.60E+02523.21E+02-9.95E+024.78E+01-3.69E+02532.90E+02-1.07E+03

29、4.80E+01-3.78E+02543.01E+02-1.14E+034.82E+01-3.88E+02553.16E+02-1.22E+034.84E+013.99E+02553.16E+02-1.22E+033.92E+02-4.83E+01563.00E+02-1.14E+033.82E+02-4.82E+01572.89E+02-1.06E+033.73E+02-4.80E+01583.20E+02-9.92E+023.64E+02-4.89E+01593.49E+02-9.25E+023.54E+02-5.11E+01605.20E+02-6.92E+023.21E+02-6.13

30、E+01618.62E+02-5.92E+022.72E+02-7.34E+01621.12E+03-5.40E+022.31E+02-8.19E+01631.25E+03-4.88E+021.93E+02-1.15E+02641.25E+03-4.49E+021.54E+02-1.51E+02651.24E+03-4.99E+021.16E+02-1.90E+02661.12E+03-5.46E+027.83E+01-2.30E+02678.67E+02-6.03E+027.22E+01-2.82E+02685.37E+02-7.10E+025.99E+01-3.22E+02694.01E+

31、02-9.42E+024.92E+01-3.61E+02703.78E+02-1.01E+034.71E+01-3.72E+02713.49E+02-1.08E+034.71E+01-3.80E+02723.65E+02-1.15E+034.71E+01-3.91E+02733.82E+02-1.23E+034.71E+014.02E+02733.82E+02-1.23E+033.89E+02-5.65E+01续表3.8743.54E+02-1.14E+033.78E+02-5.63E+01753.25E+02-1.07E+033.67E+02-5.61E+01763.38E+02-9.99E

32、+023.61E+02-5.60E+01773.66E+02-9.37E+023.52E+02-5.93E+01785.18E+02-7.11E+023.14E+02-6.93E+01798.55E+02-6.06E+022.73E+02-8.10E+01801.10E+03-5.61E+022.27E+02-8.63E+01811.23E+03-5.16E+021.89E+02-1.15E+02821.22E+03-5.03E+021.50E+02-1.51E+02831.21E+03-5.69E+021.11E+02-1.89E+02841.09E+03-6.36E+027.69E+01-

33、2.29E+02858.99E+02-7.07E+027.55E+01-2.80E+02865.12E+02-8.07E+026.25E+01-3.21E+02872.50E+02-1.05E+034.71E+01-3.62E+02881.53E+02-1.12E+034.73E+01-3.71E+02891.74E+02-1.19E+034.74E+01-3.80E+02901.98E+02-1.27E+034.76E+01-3.91E+02912.15E+02-1.35E+034.78E+014.02E+02912.15E+02-1.35E+034.10E+02-9.72E+00922.1

34、0E+02-1.19E+034.00E+02-9.72E+00932.01E+02-1.06E+033.90E+02-9.69E+00941.97E+02-9.88E+023.80E+02-9.63E+00951.93E+02-9.24E+023.72E+02-9.60E+00964.76E+02-6.91E+023.41E+02-2.18E+01978.99E+02-5.88E+023.08E+02-2.63E+01981.23E+03-5.25E+022.73E+02-4.97E+01991.45E+03-4.70E+022.34E+02-8.15E+011001.51E+03-4.08E

35、+021.71E+02-1.12E+021011.56E+03-3.50E+021.32E+02-1.45E+021021.54E+03-2.92E+021.07E+02-1.81E+021031.39E+03-2.18E+028.35E+01-2.24E+021041.09E+03-1.44E+025.84E+01-2.73E+021056.19E+02-7.05E+014.40E+01-3.14E+021064.81E+02-5.31E+014.11E+01-3.24E+021073.32E+02-3.54E+013.81E+01-3.34E+021081.73E+02-1.77E+010

36、.00E+00-3.47E+021090.00E+000.00E+003.54E+01-3.58E+02错误!未指定主题。收缩徐变截面号剪力(kN)弯矩(kN.m)剪力(kN)弯矩(kN.m)1-7.37E-010-1.37E+00-3.69E-132-7.37E-01-3.69E-01-1.37E+00-6.86E-013-7.37E-01-7.37E-01-1.37E+00-1.37E+004-7.37E-01-1.11E+00-1.37E+00-2.06E+00续表3.95-7.37E-01-1.47E+00-1.37E+00-2.74E+006-7.37E-01-3.02E+00-1.

37、37E+00-5.62E+007-7.37E-01-4.57E+00-1.37E+00-8.50E+008-7.37E-01-6.12E+00-1.37E+00-1.14E+019-7.37E-01-7.66E+00-1.37E+00-1.43E+0110-7.37E-01-9.21E+00-1.37E+00-1.71E+0111-7.37E-01-1.08E+01-1.37E+00-2.00E+0112-7.37E-01-1.23E+01-1.37E+00-2.29E+0113-7.37E-01-1.39E+01-1.37E+00-2.58E+0114-7.37E-01-1.54E+01-1

38、.37E+00-2.87E+0115-7.37E-01-1.70E+01-1.37E+00-3.15E+0116-7.37E-01-1.73E+01-1.37E+00-3.22E+0117-7.37E-01-1.77E+01-1.37E+00-3.29E+0118-7.37E-01-1.81E+01-1.37E+00-3.36E+0119左7.37E-01-1.84E+011.37E+00-3.43E+0119右1.78E-02-1.84E+014.09E-01-3.43E+01201.78E-02-1.84E+014.09E-01-3.41E+01211.78E-02-1.84E+014.0

39、9E-01-3.39E+01221.78E-02-1.84E+014.09E-01-3.37E+01231.78E-02-1.84E+014.09E-01-3.35E+01241.78E-02-1.84E+014.09E-01-3.26E+01251.78E-02-1.83E+014.09E-01-3.18E+01261.78E-02-1.83E+014.09E-01-3.09E+01271.78E-02-1.82E+014.09E-01-3.00E+01281.78E-02-1.82E+014.09E-01-2.92E+01291.78E-02-1.82E+014.09E-01-2.83E+

40、01301.78E-02-1.81E+014.09E-01-2.75E+01311.78E-02-1.81E+014.09E-01-2.66E+01321.78E-02-1.81E+014.09E-01-2.57E+01331.78E-02-1.80E+014.09E-01-2.49E+01341.78E-02-1.80E+014.09E-01-2.47E+01351.78E-02-1.80E+014.09E-01-2.45E+01361.78E-02-1.80E+014.09E-01-2.43E+0137左-1.78E-02-1.80E+01-4.09E-01-2.41E+0137右-2.0

41、6E-02-1.80E+01-1.37E-01-2.41E+0138-2.06E-02-1.80E+01-1.37E-01-2.41E+0139-2.06E-02-1.80E+01-1.37E-01-2.42E+0140-2.06E-02-1.80E+01-1.37E-01-2.43E+0141-2.06E-02-1.80E+01-1.37E-01-2.43E+0142-2.06E-02-1.81E+01-1.37E-01-2.46E+0143-2.06E-02-1.81E+01-1.37E-01-2.49E+0144-2.06E-02-1.82E+01-1.37E-01-2.52E+0145

42、-2.06E-02-1.82E+01-1.37E-01-2.55E+0146-2.06E-02-1.82E+01-1.37E-01-2.58E+0147-2.06E-02-1.83E+01-1.37E-01-2.61E+0148-2.06E-02-1.83E+01-1.37E-01-2.63E+0149-2.06E-02-1.84E+01-1.37E-01-2.66E+01续表3.950-2.06E-02-1.84E+01-1.37E-01-2.69E+0151-2.06E-02-1.85E+01-1.37E-01-2.72E+0152-2.06E-02-1.85E+01-1.37E-01-2

43、.73E+0153-2.06E-02-1.85E+01-1.37E-01-2.73E+0154-2.06E-02-1.85E+01-1.37E-01-2.74E+0155左2.06E-02-1.85E+011.37E-01-2.75E+0155右1.69E-01-1.85E+011.15E-01-2.75E+01561.69E-01-1.84E+011.15E-01-2.74E+01571.69E-01-1.83E+011.15E-01-2.74E+01581.69E-01-1.82E+011.15E-01-2.73E+01591.69E-01-1.82E+011.15E-01-2.72E+01601.69E-01-1.78E+011.15E-01-2.70E+01611.69E-01-1.75E+011.15E-01-2.68E+01621.69E-01-1.71E+011.15E-01-2.65E+01631.69E-01-1.67E+011.15E-01