新型大跨度索结构避难帐篷现场试验与数值模拟

Field Experiment and Numerical Simulation of Long-span Cable Shelter Tent

基于现场试验,对实测风荷载作用下索结构避难帐篷的顶点位移进行了数据测量。通过试验结果分析了风速对顶点位移的影响,得出了实测风荷载与结构顶点位移之间的变化关系。并采用ABAQUS有限元软件对大跨度索结构避难帐篷进行了有限元模拟,证明了有限元结果与试验结果有较好的一致性。在此模型基础上通过降低脚手架材料的刚度,模拟不同刚度条件下结构的风载-位移响应,同时模拟了雪荷载作用下的受力性能。研究结果表明:大跨度索结构避难帐篷的抗风以及抗雪荷载性能均达到设计使用要求。

The long-span cable shelter tent vertex displacements value of wind load-displacement is carried out based on the field experiment. Wind speed affected on vertex displacements is analyzed, and the relationship between wind load and vertex displacements is derived. The Large-span tent is computed by the finite element software ABAQUS and the result proves that the finite element analysis result is well consistent with field experiment value. Then the stiffness of scaffold is lowered to simulating structure wind load- displacement and snow load stress performance in different stiff conditions. The results show that the long-span cable shelter tent has meet design requirements of the wind load and snow load.