三塔悬索桥静力特性分析

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英文篇名：Analysis of Mechanical Properties of Three-tower Suspension Bridge 作者：王野 ; 黄健伟 ; 李阳 英文作者：WANG Ye;HUANG Jianwei;LI Yang;CCCC Second Harbour Engineering Company Ltd.;School of Transportation,Wuhan University of Technology; 关键词：三塔悬索桥 ; 索鞍预偏量 ; 设计成桥状态 ; 公路桥梁 ; 活载 英文关键词：three-tower suspension bridge;;tower saddle offset;;design bridge state;;highway bridge;;live load 中文刊名：SKQB 英文刊名：Transportation Science & Technology 机构：中交第二航务工程局有限公司;武汉理工大学交通学院; 出版日期：2019-02-15 出版单位：交通科技 年：2019 期：No.292 语种：中文; 页：SKQB201901010 页数：5 CN：01 ISSN：42-1611/U 分类号：41-44+48

摘要

以襄阳庞公大桥为工程背景,运用有限元软件midas Civil建立全桥三维模型,进行成桥阶段和施工阶段的静力特性分析。结果表明,在加劲梁吊装期间,主缆线形、加劲梁线形和索鞍偏移量的变化趋势类似,都是在吊装初期较大,随后逐渐减少,最终达到设计成桥状态;理想成桥状态下,每根吊索承担相邻2根吊索间距长度的加劲梁的全部或大部分自重;在运营阶段,相对于恒载,活载作用对悬索桥主要结构受力影响较小;温度作用使主缆和加劲梁的线形发生变化。
        Referring to Xiangyang Panggong Bridge,the finite element software Midas Civil was used to establish a full-bridge three-dimensional model to analyze the mechanical properties of the bridge in operation and construction phase.The results show that,during hoisting of the beam,the variation on cable and beam deflection is similar,as well as the offset of the tower saddles,which is large in the initial stage of hoisting,and then gradually reduces,and finally reaches the design state;in the operation phase,each hanger bears all or most of the weight of the beam within the length of two adjacent hangers;the live load has less influence than the dead load on the main structure of the suspension bridge;and the temperature load changes the line shape of the cable and the beam.

引文

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