摘要
通过对预应力砼箱梁的徐变和施加预应力上拱值的分析研究,合理设置反拱,能够保证桥面线形顺畅、铺装层厚度及梁体结构受力安全。文章介绍了某高速公路特大桥的后张法预应力砼简支梁反拱值的设置,供同类工程施工参考。
According to the analysis of the creep and precambcr setting in pretressed concrete box girder,the reasonable precamber which can ensure the bridge deck alignment porper, thickness of deck pavement and structural safety has been established. This paper introduces the precamber setting in prestressed concrete simply supported beam by post-tensioning method in a certain express highway ,the experience can be referred by similar construction projects.
出处
《企业技术开发》
2010年第2期58-59,共2页
Technological Development of Enterprise
关键词
后张法
徐变
预应力
箱梁反拱设置
post-tensioning method
creep
prestressed
box girder precamber setting
