节点刚度对单层柱面网壳地震响应及内力的影响分析  

Influence of joint stiffness on seismic response and internal force of the single-layer cylindrical reticulated shell

作　　者：薛素铎[1,2] 王宁[1,2] 李雄彦[1,2] 梁劲[1,2] 

机构地区：[1]京工业大学城市与工程安全减灾省部共建教育部重点实验室,北京100124 [2]北京工业大学工程抗震与结构诊治北京市重点实验室,北京100124

出　　处：《世界地震工程》2011年第3期47-52,共6页World Earthquake Engineering

基　　金：国家自然科学基金重大研究计划项目(90715034);国家自然科学基金项目(51078010);北京市自然科学基金项目(8112005)

摘　　要：论文首先采用壳单元Shell163建立了单层柱面网壳模型,同时利用壳单元模拟了焊接空心球节点,并通过计算验证了模拟方法的合理性。然后,通过调节空心球节点的厚度,考察了节点刚度变化对单层柱面网壳地震响应的影响,分析结果表明,在强震作用下节点刚度变化对网壳节点响应与杆件内力的影响均较大,建议在进行此类结构的动力分析时考虑节点刚度的影响。Shell element shell 163 is used to build the single-layer cylindrical reticulated shell with real dimension welded spherical hollow joints. The load-carrying capacity of the shell element joint is tested, and the results fulfill the requirement. Then, joint stiffness is changed by changing joint thickness. The influence of joint stiffness on seismic response and tube internal force is big enough to be involved in. Consequently, this influence is recommended to be considered in the dynamic analysis of such type structure.

关 键 词：节点刚度 焊接空心球 壳单元 单层柱面网壳 地震响应 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]