Bridge Structure, Creep And Shrinkage, Prestressed Research And Software Development

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.