中国铁道科学2017，Vol.38Issue(2)：49-54,6.DOI:10.3969/j.issn.1001-4632.2017.02.08
基于影响矩阵理论的悬索桥索力优化
Optimization of Cable Force for Suspension Bridge Based on Influence Matrix Theory
摘要
Abstract
In order to determine the reasonable cable force and main cable configuration for suspension bridge,an optimization method for cable force of suspension bridge was proposed based on influence matrix theory.The initial stiffness of suspension bridge was formed under initial loads,which included dead load and assumed initial cable force.According to the initial stiffness and superposition principle,the influence matrix of suspension bridge was obtained.Based on the influence matrix,cable forces were iterated and updated.The structural responses of suspension bridge under dead load and cable force were calculated by FEM.After convergence,the reasonable cable forces and main cable configuration of suspension bridge were obtained.The method was applied to optimize the cable force for a two-tower suspension bridge with the main span of 460 m.The calculated results were basically in agreement with the results of existing literature.Moreover,the method could also optimize the internal force,stress and displacement etc.The convergence speed was rapid and could meet engineering requirements.关键词
悬索桥/影响矩阵/索力/优化/叠加原理/有限元法Key words
Suspension bridge/Influence matrix/Cable force/Optimization/Superposition principle/Finite element method分类
交通工程引用本文复制引用
王会利,秦泗凤,李盛洋..基于影响矩阵理论的悬索桥索力优化[J].中国铁道科学,2017,38(2):49-54,6.基金项目
国家留学基金资助项目(201506060044,201508210247) （201506060044,201508210247）
辽宁省教育厅科学研究项目(L2014027) （L2014027）
中央高校基本科研业务费专项资金资助项目(DUT15QY34) （DUT15QY34）
