弯斜坡异形桥梁全过程结构仿真分析及其软件3D-BSA的开发

Simulation Analysis of the Whole Process Structure of Bending Slope Special-Shaped Bridge and Development of Software 3D-BSA

3D－BSA2．0系统是一个集前处理建立模型、结构分析计算、后处理图形生成于一体的弯斜坡异形桥梁空间结构分析软件。本文着重论述了3D－BSA对弯斜坡异形桥梁结构分析中几个关键技术问题的处理，包括限位条件的引入、曲线梁自重荷载的计算、空间预应力描述及计算、徐变分析计算、内力影响面分析及其自动充载，最后给出Windows95操作系统下3D－BSA2．0的部分图形界面。

3D-BSA 2. 0 system is a analytical software of bending slope special-shaped bridge space structure. This software treats and establishes firstly model,structure analysis and ca1ctulation .then treats figures so as to product a body. The paper states emphatically the treatment of some key technical problems by 3D-BSA in analyzing bending slope special-shaped bridge structure, including the attraction of the limited conditions, the calculation of curve beam dead load, the descriptlon and ca1culation of space prestressing, the calculation of creep analysis, the analysis of internal force influence surface and autonlatic distribution of load. At last it will give a part of 3D-BSA 2. 0 figure interfaces under Windows 95 operating system.