索穹顶结构施工过程时变力学分析

Time-Varying Analysis of Construction Process for Cable Dome

为了解决索穹顶结构施工过程分析的难题,应用非线性时变有限元方法对索穹顶结构施工过程进行了分析,全过程跟踪分析索穹顶结构在各施工阶段的力学性状,得出施工过程杆件内力和节点位移的演变规律,得出不考虑施工过程的时变效应对结构设计偏于不安全的结论,为该类结构的设计和施工提出指导性建议.

To solve the difficult problem of construction analysis for cable dome, the method of nonlinear time-varying mechanics is adopted to analyze the construction process of cable dome in this paper. The structural characteristics in every construction stage are analyzed by time-varying mechanics, and the variations of internal force and displacements are obtained, the paper reaches a conclusion that it is not safe to design if the time varying effect is not considered in the construction process analysis. At last, advices on design and construction of cable dome are made.