桥梁结构徐变收缩及预应力研究与软件开发

【作者】 张丽芳；

【导师】 徐岳；

【作者基本信息】 长安大学 ， 桥梁与隧道工程， 2002， 硕士

【摘要】 本文以理论归纳分析为基础，以软件开发完善为目的，对拟开发的桥梁软件Bridge Master扩充了三大模块——数据输入系统、徐变收缩分析模块及预应力分析模块。首先，在分析当前计算机的发展状况及桥梁结构输入数据特点的基础上，以方便、实用为原则，采用人机交互界面和Excel输入方式联合的多通道数据输入系统；其次，通过比较分析徐变收缩计算的各种理论及方法，澄清了徐变收缩分析的关键过程，并采用增量法编制程序，实现徐变收缩次内力分析；再次，对预应力的相关计算内容进行适当优化或简化处理，并编制相应程序；另外，本文还在比较预应力次内力各种计算方法的基础上，将等效荷载法结合有限元进行一些简化处理，编制程序实现预应力次内力的计算；最后以三个算例来校核计算方法及程序运行结果的可靠性，取得了预期效果。更多还原

【Abstract】 Based on the inductive analysis to theories, aimed at perfection to software development, the paper expands three modules to the bridge software BridgeMaster about to be developed--data input system, creep and shrinkage analysismodel and pre-stress analysis model. First, based on the analysis to the development condition of computer and property of the input data of bridge, this paper, taking convenience and practicability as principle, develops the multi passages data-in system made up with human-computer interactive interface and Excel import model. Second, after comparing and analyzing to the calculation theories and methods of creep and shrinkage, clearing up the key steps of creep and shrinkage analysis, the paper takes incremental method to establish program to analyze secondary inner force caused by creep and shrinkage. Third, the paper puts some optimal or simplified treatment to the contents of pre-stress and develops relative program; in addition, through analysis to the different methods used to calculate the secondary inner force caused by pre-stress, the paper combines equivalent load method with finite element, carries out some simplified treatments, and establishes program to calculate secondary inner force caused by pre-stress. At last, this paper takes three examples to check reliability of the calculation method and the running result of program, and gets expected effect.更多还原