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斜拉桥初始平衡构形的确定方法

Keywords: 桥梁工程,初始平衡构形,索力模拟,斜拉桥,迭代加速法,线形修正,动力特性

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Abstract:

为准确模拟斜拉桥成桥索力分布,在斜拉桥索力模拟常规迭代法的基础上,从迭代初值的选取和迭代加速的超松弛法两方面实现了迭代计算的加速。提出了成桥线形修正的建模坐标迭代法,与迭代加速法共同应用于斜拉桥的初始平衡构形的建立。该方法建立的初始平衡构形快速准确的模拟了斜拉桥的索力分布和成桥线形,能够作为后续分析的起始状态。通过对斜拉桥初始平衡构形的动力性能计算,分析了初应力效应、斜拉桥几何非线性及索力误差对其的影响,得出如下结论斜拉桥动力特性分析,应考虑初应力效应和几何非线性效应的影响,并且,准确模拟斜拉桥成桥索力和线形,将使动力计算结果更为精确。

References

[1]  CHENDW,AU FTK,THAM LG,et al.Determination of Initial Cable Forces in Prestressed Concrete Cablestayed Bridges for Given Design Deck Profiles Using the Force Equilibrium Method[J].Computers & Structures,2000,74(1):1-9.
[2]  JANJIC D,PIRCHER M,PIRCHER H.Optimization of Cable Tensioning in Cable-stayed Bridges[J].Journal of Bridge Engineering,2003,8(3):131-137.
[3]  严国敏.现代斜拉桥[M].成都:西南交通大学出版社,1996.YAN Guomin.Modem Cable.stayed Bridges[M].Chengdu:Southwest Jiaotong University Press,1996.
[4]  程进,江见鲸,肖汝诚,等.ANSYS二次开发技术及在确定斜拉桥成桥初始恒载索力中的应用[J].公路交通科技,2002,19(3):50-52.CHENG Jin,JIANG Jianjing,XIAO Rucheng,et al.ANSYS Software and Its Application in Determination of Initial Cable Forces in Cable-smyed Bridges under Dead Loads[J].Journal of Highway and Transportation Research and Development,2002,19(3):50-52.
[5]  李义强,张彦兵,杨丽.ANSYS中准确施加斜拉桥索力方法的研究[J].国防交通工程与技术,2006,4(1):23-25.LI Yiqiang,ZHANG Yanbing,YANG Li.A Study of the Accurate Exertion of Cable Forces of Cable-stayed Bridges by ANSYS[J].Traffic Engineering and Technology for National Defence,2006,4(1):23-25.
[6]  叶梅新,韩衍群,张敏.基于ANSYS平台的斜拉桥调索方法研究[J].铁道学报,2006,28(4):128-131.YE Meixin,HAN Yanqun,ZHANG Min.Research on Adjusting Cable Forces of Cable-stayed Bridges Based on ANSYS[J].Journal of the China Railway Society,2006,28(4):128-131.
[7]  张杨永,周云岗,姜海西.基于ANSYS的超大跨度斜拉桥的索力模拟[J].沈阳建筑大学学报,2009,25(5):909-913.ZHANG Yanyong,ZHOU Yungang,JIANG Haixi.Cable Force Simulation for Super Long-span Cable-stayed Bridges Based on ANSYS[J].Journal of Shenyang Jianzhu University,2009,25(5):909-913.
[8]  肖汝诚,项海帆.斜拉桥索力优化的影响矩阵法[J].同济大学学报,1998,26(3):235-240.XIAO Rucheng.XIANG Haifan.Intluence Maffix Method of Cable Tension Optimization for Cable-stayed Bridges[J].Journal of Tongji University,1998,26(3):235-240.
[9]  施吉林,张宏伟,金光日.计算机科学计算[M].北京:高等教育出版社,2005.SHI Jilin,ZHANG Hongwei,JIN Guangri.Computer Scientific Calculation[M].Beijing:Higher Education Press,2005.
[10]  任伟新,彭雪林.青洲斜拉桥的基准动力有限元模型[J].计算力学学报,2007,24(5):609-614.REN Weixin,PENG Xuelin.Baseline Dynamic Finite Element Model of Qingzhou Cable-stayed Bridge[J].Chinese Journal of Computational Mechanics,2007,24(5):609-614.
[11]  WANG P H,TSENG T C,YANG C G.Initial Shape of Cable-stayed Bridges[J].Computers & Structures,1993,47(1):111-123.
[12]  WANG P H,LIN H T,TANG T Y.Study on NonlinearAnalysis of a Highly Redundant Cable-stayed Bridge[J].Computers & Structures,2002,80(2):165-182.

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