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本文介绍清华大学土木工程系抗震抗爆研究近年来对实际建筑动力特性试验研究方面的一些工作。这里简明介绍下面几个问题:(1)结构物动力试验的目的;(2)振型确定的方法;(3)如何保证所确定的阻尼比有足够的精度;(4)结构物扭转振动的频率和幅值。
This article introduces some research work on the experimental study of the dynamic characteristics of the actual building in recent years by the seismic and antiknock study of the Department of Civil Engineering, Tsinghua University. The following questions are briefly described here: (1) The purpose of the dynamic test of the structure; (2) The method of determining the mode shape; (3) How to ensure sufficient accuracy of the determined damping ratio; (4) Frequency and amplitude.