整体式桥台桥梁的简化计算模型研究  

Research on Simplified Calculating Model of Integral Abutment Bridges

作　　者：彭大文[1] 洪锦祥[1,2] 

机构地区：[1]上海应用技术学院土木建筑与安全工程学院,上海市200235 [2]福建省交通规划设计院,福州市350004

出　　处：《公路》2009年第2期34-40,共7页Highway

基　　金：上海市教委重点项目(040A01);上海市自然科学基金项目(05ZR14113);福建省科技厅重点项目(2006H0021)

摘　　要：提出了整体式桥台桥梁在成桥阶段计算的三维框架简化模型;然后在ANSYS基础上进行二次开发,编制了计算桩基的等代桩长和台后土压力合力的专用分析程序IABS。利用IABS程序,结合国内现有的桥梁设计软件,即可直接进行整体式桥台桥梁的实际工程设计,为该类桥梁在我国的推广应用提供了设计基础。同时还以某一实际工程的整体式桥台桥梁为研究对象,采用IABS程序对可能影响桩基等代桩长和台后土压力合力的各种结构因素进行分析,得出若干有益于该类桥梁设计的结论。The three-dimensional framework simplified model of the integral abutment bridges is put forward. By means of ANSYS secondary development, a special analysis program IABS for length of the equivalent cantilever pile and earth pressure acting on abutment is established on the basis of simplified model. Combined with national bridge existing design software IABS, integral abutment bridges can be designed directly and foundation for the application of this type bridges in China is made. Furthermore,taking a practical integral abutment bridge as an research subject, several kinds of structural factors which may influence on the length of the equivalent cantilever pile and earth pressure acting on abutment are analysed using IABS. From the above, some benefit results for such bridges design are achieved.

关 键 词：桥梁工程 整体式桥台桥梁 简化计算模型 等代桩长 台后土压力 

分 类 号：U441[建筑科学—桥梁与隧道工程]