一种预应力单层折面网壳结构的试验研究

Experimental study on prestressed single-layer folded-plane reticulated shell structure

单层折面网壳是近年来新兴起的一种由三角形折面网格组成、外形如宝石群或宝石晶体的单层网壳结构。为改善单层折面网壳的受力性能、提高结构刚度、优化结构设计,可在其基本结构体系的基础上增设若干道预应力环索。以铰接B6,8型单层折面网壳为例,通过模型静载试验验证了理论分析的可靠性,对比分析了结构施加预应力前后的受力性能,并在施工张拉模拟试验的基础上给出了合理可行的张拉施工方法。

The single-layer folded-plane reticulated shell which is proposed recently is a kind of single-layer reticulated structure composed of triangular lattices,just like an assemblage of diamonds. In order to optimize behavior characteristic,structural stiffness and structure design of the single-layer folded-plane reticulated shell,several ring cables could be add up to the basic structure system. For further study,static loading experiment on B6,8single-layer folded-plane reticulated shell was carry out. The theoretical solution result is in a good agreement with experiment result,a contrastive analysis about structural behavior before and after prestressed was made,and a reasonable prestressed construction method is suggested.