高墩大跨连续刚构桥悬臂施工过程中的应力测试与分析  

Stress Test and Analysis of a Large-span Rigid-framed Continuous Bridge with High Piers During Cantilevering Construction

作　　者：张运波[1,2] 李永强[1] 王军文[2] 

机构地区：[1]中国铁道科学研究院,北京100081 [2]石家庄铁道学院土木工程分院,河北石家庄050043

出　　处：《国防交通工程与技术》2009年第1期41-44,共4页Traffic Engineering and Technology for National Defence

摘　　要：通过对某一高墩大跨连续刚构桥悬臂施工过程各阶段的控制截面进行理论分析与应力测试,找出了施工过程中该桥受力控制截面的应力变化规律,得出了有益的结论:可以用钢弦式应变计来监测梁体的应力变化,随着悬臂施工的进行其根部压应变越来越大等,可以为该类型桥梁的施工与设计提供参考。A stress test and theoretical analysis made of a large-span, rigid-framed continuous bridge with high piers during the cantilevering construction in the paper, through which some laws of the stress chan ges in critical sections are found and obtained are some conclusions that the laws of stress changes can be tested by means of embedded vibrating wire strain gauge and the compression strain in the bridge＇0 # box gets greater and greater with the progress of the cantilever construction. The paper may serve as a useful reference for the construction and design of similar bridges.

关 键 词：高墩大跨 连续刚构 悬臂施工 应力测试 

分 类 号：U448.23[建筑科学—桥梁与隧道工程]