Vibration test shows that the maximum acceleration response at the bracing top is not related to earthquake magnitude and its frequency characteristics since its sliding force remains unchanged.
动力试验表明，由于耗能支撑滑动荷载不变，它的顶点最大加速度反应同地震大小及其频率特性无关。
It is indicated that some modes corresponding to the maximum of earthquake force are principal, but others produced by steel trusses are local because of the weakness of theirs joints.
结果表明，转换钢桁架产生局部振型，形成结构薄弱环节，结构主振周期对应着地震力贡献最大的振型；
Finally, earthquake force based on maximum site acceleration and response spectrum to different design criterion for different type of site was determined.
最后，根据反应的结果提出不同类型场地的各设防水准的地震影响系数。
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