大跨宽幅整体预制箱梁合理断面形式研究  

Research on the Reasonable Cross Section of Long-span Wide Overall-precast Box Girder

作　　者：刘伟[1] 王立新[1] 韩大章[1] 

机构地区：[1]江苏省交通规划设计院股份有限公司,江苏南京210005

出　　处：《上海公路》2013年第4期37-40,57,共5页Shanghai Highways

摘　　要：对于大跨宽幅整体预制箱梁,合理的横断面形式对结构安全和工程经济性影响显著。结合广深沿江高速特大桥60m跨整体预制箱梁,分别从箱梁纵向受力行为、横向受力行为和结构材料经济性出发,对采用单箱双室截面和单箱单室截面的箱梁进行别比分析,得出对于宽幅60 m整体预制箱梁,采用单箱双室截面不仅在结构受力上显著优于单箱单室截面,而且材料经济性也更占优势。For the long-span wide overall-precast box girder,a reasonable cross section form significantly affects the structural safety and engineering economy.Based on the 60m span precast box girder of the Guanshen Highway Bridge,box girders with single-boxdouble-room cross section and with single-box-single-room cross section are compared for their vertical force behavior,lateral force behavior and structure material economy.The result shows that not only mechanical behavior of the single-box-double-room section is better than the single-box-single-room section,but also material is economical.

关 键 词：大跨宽幅梁 整体预制箱梁 断面形式 单箱双室 单箱单室 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]