阻尼器连接填充墙在柔性框架结构中的应用研究

Study on application of the damper connected wall in flexible frame

阻尼器连接填充墙采用黏滞阻尼器与主体框架结构连接,是一种新型填充墙与框架的柔性连接方式,能满足柔性框架结构的大变形需求。为使得阻尼器连接填充墙达到最优的力学性能,结构布置和构件力学参数的选择十分重要,采用有限元软件ABAQUS分别建立了柔性钢框架结构和阻尼器连接填充墙-框架结构的有限元模型,考察不同阻尼系数阻尼器连接填充墙的抗风、抗震和抗倒塌力学行为。数值模拟结果表明,经过对阻尼器阻尼系数优化取值后,阻尼器连接填充墙在风荷载作用下不会开裂且最大应力值仅为嵌砌刚性连接填充墙的1/3,主体结构加速度地震响应可降低48%左右,并能保证墙体在罕遇地震作用下不倒塌。最后给出阻尼器连接填充墙设计流程。

Damper connected wall(DCW)is a new type of infilled wall which use viscous damper to connect the wall and frame,and so as to meet the requirement of large deformation of the flexible frame structure.In order to achieve the optimal mechanical properties of the DCW,the structural construction and the selection of mechanical parameters of the members are very important.The finite element models of flexible steel frame structure and frame structure with DCW are established by using the finite element software ABAQUS.The mechanical behaviors of wind resistance,seismic resistance and collapse resistance of DCW with different damping coefficients are investigated.The results of numerical simulation show that the DCW will not crack under wind load and the maximum stress value in DCW is only 1/3 of that of rigid connected wall,the acceleration seismic response of the main structure can be reduced by 48%approximately,and the wall will not collapse under rare earthquake.By the end,the design flow of the DCW is given.