Development of a residual seismic capacity evaluation system with considering the rocking behavior

当建筑物与地面的刚度比较大时，土-结构相互作用不可忽略。在这种情况下，地面的摇摆行为影响了由建筑物上的测量加速度得出的性能曲线。因此，为了从性能曲线中评估建筑物的损伤，需要从性能曲线中减去摇摆行为的影响。在本研究中，首先用实际建筑物验证了放置在建筑物底部的加速度计可以测量建筑物底部的摇摆角。其次，采用底部装有摇摆装置的钢制试验架进行了振动台试验，以评估所测摇摆角与代表性力之间关系的准确性。

When the stiffness ratio of a building to the ground is relatively high, the soil-structure interaction is not negligible. Under the condition, rocking behavior of the ground affects the performance curve derived from the measured accelerations on the building. Therefore, the effect of the rocking behavior needs to be subtracted from the performance curve in order to evaluate the building damage from the performance curve.In this research, firstly it is confirmed with a real building that the rocking angle at the bottom of the building can be measured with the accelerometers placed at the bottom of the building. Secondly, a shaking table test with steel test frame that has rocking devices at the bottom of the frame was conducted to evaluate the accuracy of the measured relationship between the rocking angle and representative force.