带损伤预应力空心板梁力学性能分析  

Analysis on Mechanical Properties of Damaged Hollow Plate Girder under Prestress

作　　者：陈玮[1] 张鑫[1] 付志成 

机构地区：[1]重庆交通科研设计院,重庆400067 [2]中国地质工程集团公司,北京100093

出　　处：《公路交通技术》2009年第2期71-74,共4页Technology of Highway and Transport

摘　　要：重庆境内某30m跨径后张预应力空心板梁桥在运营过程中出现梁底面沿纵向预应力钢绞线方向出现裂缝,有的裂缝长度竟然沿梁长贯通。针对这一情况,结合试验和有限元分析,系统研究设计和施工偏差对空心板梁力学性能的影响,以利于在今后的设计和施工中尽量避免偏差的产生。A 30m long post-tensioned prestressing hollow plate-girder bridge in Chongqing shows cracks along longitudinal prestressed stranded wire. Some of the cracks are on full length of the girder. In view of this situation, combining design and finite element analysis, this paper makes systematic study on influence of design and construction deviation on mechanical properties of hollow plate girder in order to avoid deviation in design and construction in the future.

关 键 词：设计和施工偏差 纵向裂缝 空心板梁 力学性能 

分 类 号：U448.212[建筑科学—桥梁与隧道工程]