立体停车结构抗震性能及水平阻尼支撑参数优化

将原研发的水平阻尼支撑应用于高层立体停车结构，以框架停车区平面剪切角及升降区平面剪切角在水平激励下的峰值响应为性能指标，使用ANSYS软件的APDL语言建立了参数化车库-阻尼器模型，通过动力时程分析，研究了支撑杆件布置方案、黏弹性材料的阻尼系数与损耗因子变化对水平阻尼支撑响应控制效果的影响，经比较分析后确定了优化后的水平阻尼支撑参数.结果表明，当支撑杆布置选取最优方案，黏弹性材料阻尼系数取200 kN·s/m、损耗因子取5.0时，在不同二维地震波作用下，结构的停车区平面剪切角峰值分别下降了65.67%、51.72%、51.59% ，升降区平面剪切角峰值分别减少了73.23%、72.51% 、75.36%，结构平面内梁柱变形同步性增强，升降设备工作环境稳定性明显提升，水平阻尼支撑工作状态良好.研究结果对黏弹性阻尼器应用于高层立体停车结构以及高层立体车库设计具有指导意义.
The originally developed horizontal damping support was applied to the high-rise tridimensional parking structure.The plane shear angle of the parking zone and lifting zone under the horizontal excitation was taken as the performance index.A parametric model of a 15-floors tridimensional parking structure was established by APDL language of ANSYS.Based on the dynamic time history analysis，the effects of the supporting bar layout，damping coefficient and energy loss coefficient of the visco-elastic material on response control of horizontal damping support were studied.After comparison and analysis，the optimal level of horizontal damping support parameters was determined.The results showed that when the optimal supporting bar layout was applied，the damping coefficient was 200 kN·s/m，energy loss coefficient was 5.0，and the peak plane shear angle of the parking zone under different two-dimensional seismic waves was decreased by 65.67% ,51.72% and 51.59% respectively，while the peak plane shear angle of the lifting zone was reduced by 73.23% ,72.51% and 75.36%.Meanwhile，the synchronization of the beam and column deformation in the structure plane was enhanced，the working environment stability of the lifting equipment was improved significantly，and the horizontal damping support was in good working condition.The results provide significant guideline for the application of visco-elastic damper to the high-rise parking structure and the design of high-rise tridimensional parking structure.