摘要
目前,国内外学者已对单层网壳结构的静力稳定性进行了系统分析,但对其屋面系统考虑较少。在实际工程中,屋面系统与网壳结构协同工作,如果忽略屋面系统的作用,既不经济又可能成为结构的安全隐患,该文开展了考虑有檩体系屋面系统的单层网壳结构静力稳定性研究。分析了不同跨度、矢跨比、杆件截面对考虑屋面系统的单层网壳结构静力稳定性的影响规律。同时该文分析了屋面系统中檩条与檩托之间半刚性节点的转动刚度,从而使考虑屋面系统的网壳结构分析模型更加贴合实际情况。
Recently the stability analysis of reticulated shells have been conducted broadly. But few researchers focus on the effect of roofing system. In the practical engineering, the reticulated shell and roofing system bear the load together. So it is wasteful and may even cause potential safety troubles if the roofing system is not considered during the design. In the paper, the research of the influence of the roofing system to the stability of reticulated shell was reported. The influence of different parameters on the static stability analysis of reticulated shell was studied, including the span, the rise to span ratio, and the cross section. In addition, the rotational stiffness of semi-rigid joints between the purlin and purlin hanger was analyzed. The consideration of semi-rigid joints made the analytical model more consistent with the practical situation.
出处
《工程力学》
EI
CSCD
北大核心
2017年第B06期71-77,98,共8页
Engineering Mechanics
基金
国家科技支撑项目(2015BAK17B03)
国家自然科学基金项目(51578515
51278152
51525802
51508134)
关键词
单层球面网壳
屋面系统
静力稳定性
半刚性节点
跨度
single-layer reticulated shell
roofing system
static stability
semi-rigid joints
span
