津滨轻轨桥梁徐变监测与分析  

Monitoring and Analysis of Bridge Girder Creepage

作　　者：高应钦[1] 杨孚衡[2] 孙宁[3] 王林[3] 

机构地区：[1]天津滨海快速交通发展有限公司,天津300457 [2]铁道科学研究院铁道建筑研究所,北京100081 [3]铁道科学研究院工程咨询公司,北京100081

出　　处：《铁道标准设计》2003年第8期4-8,共5页Railway Standard Design

摘　　要：对津滨轻轨预应力混凝土箱梁的混凝土徐变发展规律进行长期的现场监测。在分析现场观测结果的基础上 ,总结混凝土徐变发展的规律 ,利用理论计算对混凝土徐变系数进行曲线拟合 ,得到比规范中规定的更小的徐变系数 。A long term field monitoring was performed over the creepage of PC box girder of Jinbin Light Rail. Based on the monitoring result, a summary was made of the law of development of concrete creepage. A curve fitting was conducted against the creep coefficient by means of theoretical computation, and resulted in a coefficient smaller than that specified in the specification, which was used for prediction of creepage of other bridges.

关 键 词：轻轨桥梁 预应力混凝土箱梁 徐变系数 混凝土徐变 监测 变形分析 

分 类 号：U448.35[建筑科学—桥梁与隧道工程] U239.3[交通运输工程—道路与铁道工程]