预应力混凝土箱梁桥精细化有限元模型  

3-D Finite Element Simulation for Prestressed Box Girder Bridges

作　　者：吕颖钊[1] 陈国强[1] 潘学政[1] 

机构地区：[1]杭州市公路管理局,杭州310030

出　　处：《浙江交通职业技术学院学报》2011年第4期9-13,共5页Journal of Zhejiang Institute of Communications

基　　金：浙江省交通运输厅科技计划项目(2010H20)

摘　　要：介绍了预应力箱梁桥的有限元分析方法,基于ANSYS二次开发了预应力箱梁桥有限元分析模块,能够计入材料与几何非线性影响,可用于预应力箱梁桥的受力特性分析及局部应力分析。利用开发的模块,采用Solid45单元模拟混凝土,Link8模拟预应力束,建立预应力混凝土箱梁桥的精细化有限元模型,对钱江通道南接线大宽跨比现浇箱梁进行分析,验证了此建模方法的实用性。Finite element analysis method for prestressed concrete bridge is introduced. The prestressed bridge finite element analysis module is redeveloped based on ANSYS software. It is able to bring material and geometric nonlinear effects into the analysis, for analyzing mechanical performance and local stress characterization of this kind of structure. For an example, model for an actual project with prestressed concrete box girder is built, combined with Solid45 for simulating concrete, and Link8 for simulating prestressed tendon.

关 键 词：桥梁工程 体外预应力 有限元仿真 力学性能 软件开发 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]