桥梁拓宽后受力状态及荷载试验分析  

Analysis of Mechanical Performance and Loading Text in Widening Bridge

作　　者：李波[1] 吴文清[1] 

机构地区：[1]东南大学交通学院,江苏南京210096

出　　处：《西部交通科技》2009年第8期75-77,81,共4页Western China Communications Science & Technology

基　　金：安徽省交通科技进步计划项目(编号:2006-108-13)

摘　　要：文章结合某高速公路连续刚构桥拓宽工程实践,通过空间有限元计算与实桥荷载试验,分析新旧桥横向拼接前后桥梁受力性能变化情况。通过分析得出:横向拼接有利于增大桥梁结构的整体刚度,减小旧桥挠度与应力。the paper takes a box bridge on one expressway as an example using space finite element analysis methods and loading text to consider the performance at pre-and post widening.The stress state of connection part is also studied.It shows that the overall stiffness of the bridge structure increases in favor of transverse connection,the deflection,stress of old bridge are reduced and the connection part shave a better performance.

关 键 词：桥梁工程 斜交梁桥 空间有限元 荷载试验 

分 类 号：U448[建筑科学—桥梁与隧道工程]