摘要
长联多跨的连续刚构桥梁,在温度和混凝土收缩徐变影响下梁体会伸长或缩短,以致于支座会出现偏心受力。以沮河特大桥工程为依托,利用有限元分析软件Midas Civil建立该桥模型,分析计算该桥采用一次性合龙的施工方案所产生在支座位移以及成桥阶段考虑10 a收缩徐变和温度变化下的支座位移,最后给出合理的支座预偏量。
For the long-coupled multi-span continuous rigid-frame bridge, its beam will be extended or shortened under the effects of temperature and concrete shrinkage creep so that the support will be eccentrically stressed. The finite element analysis software – Midas Civil is used to establish the model of Juhe River Bridge Project in order to analyze and calculate the support displacement caused by the construction scheme of this one-off closured bridge and the support displacement under 10 a shrinkage creep and temperature variation considered in thestageofbridgecompletion. Finally, thereasonablepredeviatorofsupportisgiven.
出处
《城市道桥与防洪》
2016年第3期112-113,13,共2页
Urban Roads Bridges & Flood Control
关键词
长联多跨
连续刚构桥
一次性合龙
支座预偏量
long-coupled multi-span
continuous rigid-frame bridge
one-off closure
pre deviation of support
