某独塔双索面斜拉桥的合理成桥状态研究及施工阶段分析  

Study on Reasonable Bridge State of a Single Tower Double of Cable-stayed Bridge and Analysis of Construction Stage

作　　者：李琪勇 LI Qiyong(Zhengzhou Municipal Engineering Corporation,Zhengzhou,Henan 450000,China)

机构地区：[1]郑州市市政工程总公司,河南郑州450000

出　　处：《公路工程》2019年第1期150-155,共6页Highway Engineering

摘　　要：为了研究江西省某独塔双索面斜拉桥的合理成桥状态,首先利用有限元软件MIDAS/CIVIL建立有限元模型,然后分别利用最小弯曲能量法、弯矩最小法和影响矩阵法对该桥的最终成桥状态进行了计算。基于得到的合理成桥状态提出了该斜拉桥的施工方法和施工顺序。最后利用正装迭代法进行了分析,结果表明该计算得到的合理施工状态索力均小于桥梁设计索力,误差均在3%以内,合理成桥状态的索力与设计索力分布规律基本一致,且合理成桥状态对应的桥梁线形最大挠度为21. 87 mm,满足规范要求。In order to study the reasonable bridge state of a single tower double cable-stayed cable-stayed bridge in Jiangxi Province,this paper firstly uses the finite element software MIDAS/CIVIL to establish the finite element model,and then uses the minimum bending energy method,the bending moment minimum method and the influence matrix method respectively.The final bridged state of the bridge was calculated.Based on the obtained reasonable bridge state,the construction method and construction sequence of the cable-stayed bridge are proposed.Finally,the paper is analyzed by the formal iteration method.The results show that the cable force of the reasonable construction state calculated in this paper is less than the cable force of the bridge design,the error is within 3%,and the cable force of the reasonable bridge state and the distribution of the cable force of the design.Basically consistent.In addition,the maximum deflection of the bridge line corresponding to the reasonable bridge state is 21.87 mm,which meets the requirements of the specification.

关 键 词：斜拉桥 合理成桥状态 施工阶段 索力 

分 类 号：U445[建筑科学—桥梁与隧道工程]