【作者】 易凌；

【导师】 刘坚；

【作者基本信息】 广州大学 ， 结构工程， 2007， 硕士

【摘要】 在最近的十几年里随着计算机技术的发展，把钢结构的高等分析应用于设计已成为一种可能。高等分析方法是一种能准确描述结构极限状态的二阶弹塑性分析方法，并且不需要对组成结构的单个构件进行繁琐的验算，一次计算一次完成，因此，高等分析方法是一种更为有效和更加精确的钢结构分析方法。本文采用了一种新的考虑剪切变形的二阶非弹性梁柱单元，及考虑两类钢支撑的二阶非弹性单元进行了理论分析，并采用Fortran语言编写了考虑几何非线性、材料非线性、几何初始缺陷、残余应力、半刚性连接的钢框架—支撑结构高等分析程序。通过本文编写的高等分析程序对钢框架支撑结构进行了分析，并与美国Bucknell大学的非线性软件MASTAN2进行了对比，验证了本文理论方法的正确性。本文还通过算例对钢框架结构、钢框架中心支撑结构、钢框架偏心支撑结构的高等分析进行了研究，得出了高等分析时各种因素对不同钢框架支撑结构性能的影响。最后，本文将通过三个工程算例来说明钢结构高等分析能进行考虑极限承载力状态和正常使用极限状态的钢结构设计。通过对工程算例的应用研究，表明钢结构高等分析方法能广泛地应用于实际工程。更多还原

【Abstract】 With the advancement of the computer technology in recent decades, there is apossibility toward developing steel structure advanced analysis suitable for design.Advanced analysis can be defined as a method of second-order inelastic analysis thatsufficiently captured the behavioural effects associated with structure limit states suchthat separate member of composition structure capacity checks are not required. Onlyone time’s complete calculate. Thus. The advanced analysis methods are consideredto a more effective and exact analysis approache for steel structures.In this paper a new second-order inelastic beam-column element was taken intoaccount effects of shear deformation, inelastic element of two types’ steel brace wereanalysised, and the advanced analysis program for steel braced frame structueconsidered geometric nonlinearity, material nonlinearity, initial geometricimperfection, residual stress, semi-rigid connection was compiled successfully.The analysis and comparison of braced steel frame are conducted by advancedanalysis program and bucknell university’s nonlinearity MASTAN2 software.Thetheory analysis method is proved correctly by calculatical examples, examples of steelframe structures, centrically braced steel frame structures, eccentrically braced steelframe structures were analysised by advanced analysis program, and obtained eachkind of factor to the different steel braced frame structure performance influence.At last, In this paper advanced analysis method for steel structure is proved thatcan be used design in ultimate limit states and serviceability limit states by threeengineering examples.Through application research of engineering example, indicatedthat advanced analysis can be widely use practical engineering.更多还原