超大跨度悬挑混凝土框桁架杂交结构优化选型

The optimization selection of cross structure of large span cantilever concrete truss

对主体结构进行了静力分析,并对基于变形性能及受力性能的优化选型进行了探讨,研究了桁架的腹杆布置形式、悬挑部分板厚及桁架节间距对超大悬挑混凝土框桁架结构体系静力特性的影响,分析表明,按选定性能目标优化得到的结构体系经济合理,实现了超大跨度悬挑混凝土框桁架杂交结构在静力性能安全的设计目标。

This paper made static analysis to main structure, and discussed the optimization selection based on deformation properties and me- chanical performance, researched the static characteristic influence of web member setting form of truss, cantilever part thickness and truss spac- ing to large span cantilever concrete truss structure. The analysis showed that, according to the selected target optimization made the structural system economic and reasonable, realized the design goals of large span cantilever concrete truss structure in the security of static performance.