加固、改造设计的变刚度分析方法

Stiffness-variance FEM in Structure Reinforcing and Rebuilding

相对于一次性加载方法,变刚度分析方法是描述结构经历施工、加固改造过程直至最后完成的准确方法。随着结构工程的发展,越来越多的结构成型过程需要用变刚度分析方法模拟,以准确反映结构自重及部分附加恒载引起的结构响应。总结了变刚度分析方法的一般原理、适用条件并讨论软件应用等实现方法。

Relative to one-off loading,stiffness-variance FEA is more accurate a way to model all over the construction,reinforcing or rebuilding stages.More and more structures should be analyzed with the method to reflect real structural response due to gravity loads,especially for structure self weights and even some superimposed dead loads.General principles,adaptability and some practical ways are introduced.