高强度地震下带钢避难建筑抗震设计

Seismic Design of Steel-strip Refuge Buildings under High-intensity Earthquakes

摘要:

为了提高带钢避难建筑的抗震性能，对高强度地震下带钢避难建筑实施抗震设计。设置高强度地震下带钢避难所的抗震设防要求，给出不同地震情况下地震避难所设防加速度值以及地震避难所地震影响系数最高值，通过SAP2000分析软件对带钢地震避难建筑结构实施动力弹塑性时程研究，选择合理的塑性铰参数值，通过在建筑周围设置钢支撑的策略对带钢避难建筑实施设计，分析高强度地震下的带钢避难建筑的抗震性能。实验结果说明，采用所提设计方法下的带钢避难建筑在大震情况下的反应优，延性较强，在不同地震波作用下的水平方向位移角满足抗震设防规范。

Abstract:

The seismic performance of steel-strip refuge buildings under high-intensity earthquakes is improved through seismic design. The seismic fortification requirements of steel-strip refuge buildings under high-intensity earthquake are set, and the acceleration value and maximum earthquake affecting coefficient of the steel-strip shelter under different earthquake scenarios are given. SAP2000 is used to analyze the elastic-plastic dynamics of the steel-strip shelter, and reasonable parameters for plastic hinges are selected. The steel support is set around a building to analyze the seismic performance of the steel-strip shelter. Experimental results show that the steel-strip refuge building designed through the proposed method has good response and ductility under intense earthquakes. Moreover, the horizontal displacement angle of the building under the action of different seismic waves satisfies the seismic fortification criterion.