结构工程师Issue(4)：60-64,5.
替换空心板的变高度后张预应力T梁设计研究
Design of Post-tensioned T-beams with Variable Depth for Substituting Voided Slabs
邢渊 1李志峰 1刘钊 2马增 2马松根 3刘志勇3
作者信息
- 1. 华汇工程设计集团股份有限公司，绍兴 312000
- 2. 东南大学土木工程学院，南京 210096
- 3. 绍兴袍江建设投资有限公司，绍兴 312000
- 折叠
摘要
Abstract
Regarding to the slab separately loading scenario in a voided slab deck,an alternative disposal method is presented to replace the original voided slab deck by post-tensioned T-beam with variable depth.In this design,the beam keeps the same depth at end part with the original voided slab and has an increased depth in the middle part.As a result,the new superstructure can be replaced without altering the existing bridge deck elevation.To achieve this,the rib spacing is reduced (smaller than that of prefabricated and transversely assembled T-beam),and the cross section and the distribution of prestressed tendons is optimized as well.In addition,both “pre-embedded steel plates”and “shear reinforcement skeleton”are elaborately designed to enhance the end of the T-beam.The practice can be very informative for the similar retrofit projects.关键词
空心板梁/T 梁/变高度梁/桥梁改造/抗剪设计Key words
voided slabs/T-beams/beam with variable depth/bridge retrofit/shear design引用本文复制引用
邢渊,李志峰,刘钊,马增,马松根,刘志勇..替换空心板的变高度后张预应力T梁设计研究[J].结构工程师,2015,(4):60-64,5.
