弦支环向折线形单层球面网壳布索方案研究

Cable arrangement research of single-layer reticulated spherical shell with circumferential folded line

为改善环向折线形单层球面网壳的受力特性,在环向折线形单层球面网壳中增设了若干道环索、斜索和撑杆,形成了一种新型的弦支环向折线形单层球面网壳的加强结构体系。从满足不同建筑造型要求和合理、经济的受力体系的角度出发,给出了五种不同的布索方案,并对各方案下的结构受力性能做了对比分析。经分析可知,布索方案3~5下的弦支环向折线形单层球面网壳的性能较优。研究结果为揭示各种不同布索方式下的弦支环向折线形单层球面网壳的受力特性和内力、位移的变化规律提供依据,也可为此类网壳结构的初步设计、优化设计和多方案比较提供参考。

In order to improve the mechanical properties of single-layer reticulated spherical shell with circumferential folded line,some ring cables,oblique cables and bracings were added into the initial structure to form a new type single-layer reticulated spherical shell with circumferential folded line. For the purposes of satisfying different architectural styles,reasonable and economic strcutural system,five cable arrangement schemes were given and comparative analyses on mechanical performances of the stucture were conducted. The results show that the mechanical properties of the 3rd to 5th cable arrangement schemes are better. The study results provide basis to reveal mechanical property and change law for internal force and displacement of single-layer reticulated spherical shell with circumferential folded line with different cable arrangements,and also provide reference for the preliminary design,optimal design and comparison of different schemes for this kind of spherical shell structure.