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对异型柱框 桁架结构模型进行了强震和强余震两个阶段的模拟地震振动台试验 ,以模拟实际结构经常受到的主震、余震型地震作用的情况。分析了异型柱框 桁架结构在强震作用下从弹性阶段直接进入弹塑性阶段的动力反应特点 ,揭示了余震阶段地震反应的拟线性性质。验证了异型柱框 桁架结构的抗震性能
Simulated seismic shaking table tests of two types of strong and strong aftershocks were carried out on the special-shaped column-frame truss structure model to simulate the earthquakes that are frequently encountered in actual structures. The dynamic response characteristics of the special-shaped column-frame truss structure directly entering the elasto-plastic stage under the action of strong earthquake are analyzed, and the quasi-linearity of the seismic response during aftershock phase is revealed. The seismic behavior of the special-shaped column-frame truss was verified