摘要
分析比较了几种计算索力方法的优劣,并且以东海特大桥系杆拱连续梁为例,通过引入影响矩阵法构建了吊杆张拉优化模型,以减少吊杆张拉次数为目标,同时运用有限元分析软件Midas Civil建立了桥梁模型,再对优化模型的可靠性进行了验证。研究结果表明:影响矩阵法的引入有效地减少了吊杆张拉次数,可将吊杆的张拉调整次数缩减为两次,且优化后的吊杆成桥索力与设计值的差值控制在±3%的范围内,满足施工控制要求。
Based on a comparative analysis of the advantages and disadvantages of several methods for calculating cable force,with the tied arch continuous beam of Donghai Bridge as a case study,an optimization model of suspender tension has thus been constructed by introducing the influence matrix method for the reduction of the number of suspender tensions.Meanwhile,a bridge model to verify the reliability of the optimized model has been established by using the finite element analysis software Midas Civil.The research results show that the introduction of influence matrix method effectively reduces the tensioning times of suspenders,thus reducing the tensioning adjustment times of suspenders to two times,with the difference between the bridge cable force of optimized suspenders and the design value controlled within±3%,fully meeting the requirements of construction control.
作者
邓宗仁
何楚韶
刘运思
杜宪武
杨玉平
DENG Zongren;HE Chushao;LIU Yunsi;DU Xianwu;YANG Yuping(The Tianjin Engineering Co.,Ltd.,China Railway Beijing Engineering Group,Tianjin 300000,China;Hunan Provincial Key Laboratory of Geotechnical Engineering for Stability Control and Health Monitoring,Hunan University of Science and Technology,Xiangtan Hunan 411201,China)
出处
《湖南工业大学学报》
2022年第1期39-45,共7页
Journal of Hunan University of Technology
基金
国家自然科学基金资助项目(51704109)
湖南省自然科学基金资助项目(2020JJ5179)。
关键词
钢管混凝土拱桥
影响矩阵法
索力优化
有限元分析
steel tube concrete arch bridge
influence matrix method
cable force optimization
finite element analysis
