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上海浦东国际机场卫星厅的中央大厅结构复杂,布置有耗能型屈曲约束支撑,为获得罕遇地震下的结构性能水平以及屈曲约束支撑的耗能情况,采用动力弹塑性时程分析方法对其进行了分析计算。通过动力特性、基底剪力和顶点位移对比分析,验证了模型及计算结果的合理性。根据分析结果可知,层间位移角满足规范要求,构件损伤满足罕遇地震下结构性能设计要求。在罕遇地震下,屈曲约束支撑的耗能优异,不同地震波作用下耗能占比差异较大。将BRB耗能占比最优区间控制在合理的层间位移角范围内,可最大限度地发挥BRB耗能水平。
The central hall of Shanghai Pudong International Airport Satellite Hall has a complex structure with energy-dissipative buckling restraints. In order to obtain the structural performance under rare earthquakes and the energy consumption of buckling restrained supports, the dynamic elastoplastic time-history method Analyzed and calculated. By comparing the dynamic characteristics, the base shear and the vertex displacement, the rationality of the model and the calculation results are verified. According to the analysis results, it can be known that the displacement angle between layers satisfies the requirements of the specification, and the damage of components satisfies the design requirements of structural performance under rare earthquakes. Under the rare earthquakes, the buckling restrained brace has excellent energy dissipation, and the difference of energy consumption under different seismic waves is large. Controlling the optimal range of BRB energy consumption within a reasonable range of layer drift maximizes BRB energy consumption.