悬索桥塔梁约束条件的设计与研究  

Design and Research on Constraint Conditions Between Main Tower and Main Girder of Suspension Bridge

作　　者：刘金朝 王惠民[1] 姚激[1] 黄坤[1] 兰玮琦 韩团齐 LIU Jin-chao;WANG Hui-min;YAO Ji;HUANG Kun;LAN Wei-qi;HAN Tuan-qi(School of Architecture Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China;Yunnan Zehui Engineering Cost Consulting Corporation,Kunming 650500,Yunnan,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500 [2]云南泽惠工程造价咨询有限公司,云南昆明650021

出　　处：《筑路机械与施工机械化》2020年第12期31-34,共4页Road Machinery & Construction Mechanization

基　　金：国家自然科学基金项目(11562009);云南省教育厅科学研究基金项目(2017ZZX135)。

摘　　要：为了研究悬索桥塔梁约束条件对悬索桥的力学性能的影响,本文以某850 m悬索桥为研究对象,采用Midas Civil软件建立了有限元模型,研究了3种不同的塔梁约束条件下,悬索桥的静、动力力学响应。结果表明:成桥工况对于漂浮体系,塔梁连接处附近的吊杆与主梁受力均较大;地震作用对于固结体系,悬索桥的位移较小,但在塔底会产生较大的弯矩和剪力;对于成桥工况与地震作用,一般支撑体系的悬索桥力学性能均较好,可以更好地保证工程的安全。本研究为类似工程提供了理论参考。In order to study the influence of tower beam constraint conditions on the mechanical properties of suspension bridge,this paper taked an 850 m suspension bridge as the research object,established a finite element model by Midas Civil software,and studied the static and dynamic mechanical response of suspension bridge under three different tower beam constraints.The results show that,for the floating system,the suspender and main beam near the connection of the tower and beam are all stressed greatly;for the consolidation system,the displacement of the suspension bridge is small,but the bending moment and shear force at the bottom of the tower will be large;for the bridge completion condition and the seismic action,the mechanical properties of the suspension bridge of the general support system are better,which can better ensure the safety of the project.The research provides a theoretical reference for similar projects.

关 键 词：悬索桥 约束条件 成桥工况 地震作用 

分 类 号：U414.03[交通运输工程—道路与铁道工程]