基于影响矩阵法的外倾式矮塔斜拉桥索力优化  

Optimization of cable forces for externally inclined low pylon cablestayed bridges based on influence matrix method

作　　者：王奎涛 关伟 宋磊 WANG Kuitao;GUAN Wei;SONG Lei(Surveying and Designing Institute of Shanxi Province,Shanxi Taiyuan 030006 China)

机构地区：[1]山西省交通规划勘察设计院有限公司,山西太原030006

出　　处：《山东交通科技》2024年第2期6-9,共4页

基　　金：山西交通控股集团有限公司科技项目,项目名称:高墩宽翼缘外倾双索面矮塔斜拉桥设计关键技术研究,项目编号:20-JKKJ-38。

摘　　要：以浮山县丞相河特大桥(87+160+87)m双塔外倾式双索面PC矮塔斜拉桥为工程背景,基于影响矩阵法理论,通过MidasCivil有限元软件建模计算,对施工阶段及成桥阶段外倾式矮塔斜拉桥索力计算优化,探究外倾式矮塔斜拉桥拉索索力应力幅,拉索索力优化结果满足设计及施工要求,可为同类型桥梁设计提供借鉴。Based on the theory of influence matrix method,this paper takes the(87+160+87)m double-tower outward-inclined double-cable-plane PC short tower cablestayed bridge over Chengxiang River in Fushan county as the engineering background.By using Midas Civil finite element software for modeling and calculation,the cable force calculation optimization of the outward-inclined short tower cable-stayed bridge in both construction stage and completion stage is explored.The stress amplitude of cable force of the outward-inclined short tower cable-stayed bridge is studied,and the optimization result of cable force satisfies the design and construction requirements,which can provide design reference for similar bridges.

关 键 词：影响矩阵 外倾式矮塔斜拉桥 斜拉索 索力 应力幅 

分 类 号：U443[建筑科学—桥梁与隧道工程]