30m预应力简支箱梁受弯极限承载力仿真分析  

Simulating Analysis on Ultimate Bearing Capacity of Bending of 30m Pre-stressed Simple-supported Box Girder

作　　者：庞凌志 

机构地区：[1]中铁四院集团广州设计院有限公司,广东广州510000

出　　处：《城市道桥与防洪》2015年第2期41-43,51,共4页Urban Roads Bridges & Flood Control

摘　　要：由于现阶段的桥梁设计局限于运用线弹性理论,无法客观反映桥梁结构材料的非线性行为,而有限元理论可以很好地处理这类问题。现运用ANSYS有限元软件对一片30 m预应力简支箱梁进行极限承载力仿真分析,对预应力箱梁非线性行为进行了全过程跟踪分析,最终得出预应力箱梁极限承载力。Owing to the bridge design limited in using the linear elastic theory at the present stage, it is hard to objectively reflect the non-linear behavior of bridge structural material. The finite element theory can better treat this kind of problem. The ANSYS finite element software is used to carry out the ultimate bearing capacity simulation analysis of a 30 m pre-stressed simple-supported box girder, and also carry out the whole-process tracking analysis of non-linear behavior of pre-stressed box girder. Finally the ultimate bearing capacity of pre-stressed box girder is obtained.

关 键 词：预应力 简支箱梁 钢筋混凝土 有限元 材料非线性 

分 类 号：U445.471[建筑科学—桥梁与隧道工程]