弦支穹顶结构预应力优化设计方法综述  

A Summary of Optimization Method of Prestressed Suspen-dome Structure

作　　者：黄卫林[1] 刘树堂[1] 

机构地区：[1]广州大学土木工程学院,广州510006

出　　处：《华南地震》2017年第1期29-34,共6页South China Journal of Seismology

摘　　要：最佳预应力是弦支穹顶设计的核心和关键问题。针对目前弦支穹顶结构没有统一的预应力设计方法,基于四种预应力设计准则总结了各类弦支穹顶结构预应力确定的方法。特别对于大跨度隔圈布索、椭圆弦支穹顶预应力设定的方法和步骤进行了阐述。评述了各类方法的优缺点及工程适用性,提出弦支穹顶最优预应力设计:必须考虑下部索杆布置优化、预应力值优化两个层次,为实际工程预应力设计提供参考依据和借鉴。The optimal prestress is the core and key problem of the design of string-supported dome. There is no unified design method of prestressing force for the current suspen-dome structure. Based on the four prestress design criteria, this paper summarizes the methods to determine the prestress of various suspender dome structures. In particular, the methods and steps of setting the prestressed force of large - span spacer cable and elliptical suspen-dome are described. The advantages and disadvantages of each method and the applicability of the method are discussed. The optimal prestress design of suspender dome is put forward： the lower strut layout optimization and the prestress value optimization two levels must be considered, which can provide reference for practical engineering prestress design.

关 键 词：弦支穹顶结构 预应力优化 优化设计 布索优化 

分 类 号：TU399[建筑科学—结构工程]