宽幅脊骨梁矮塔斜拉桥剪力滞效应分析及试验研究  

Effect Analysis and Experimental Study on Shear Lag of Wide-backbone Girder Low-pylon Cable-stayed Bridge

作　　者：刘傲 林文强 宋军[2] 

机构地区：[1]广东省南粤交通投资建设有限公司,广东广州510101 [2]同济大学,上海市200092

出　　处：《城市道桥与防洪》2016年第5期78-80,10,共3页Urban Roads Bridges & Flood Control

摘　　要：以江肇高速公路西江特大桥为背景,研究宽幅脊骨梁矮塔斜拉桥截面正应力分布规律。通过理论计算并结合实桥试验验证,得出了各关键断面应力不均匀系数,为优化预应力钢束设计及改善宽幅截面受力性能提供了依据。Taking Xijiang Bridge in Jiangmen – Zhaoqing Expressway as the background, the article studies the normal stress distribution rule at the section of wide-backbone girder low-pylon cable-stayed bridge.According to the theoretical calculation and the experimental verification of real bridge, the uneven coefficient of each key section stress is achieved so as to provide the basis for optimizing the design of pre-stressed steel beam and for improving the stress performance of wide section.

关 键 词：矮塔斜拉桥 剪力滞 效应分析 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]