确定建筑物刚心的一种动测方法

A VIBRATION METHOD TO ESTIMATE THE CENTER OF RIGIDITY OF BUILDINGS

介绍一种利用实测振动记录确定已有建筑物的刚度中心的方法。该方法以建筑物刚度中心处的平移运动与扭转运动的相干函数最小为依据 ,分别对建筑物不同位置的运动作对于扭转的相干函数并积分求面积 。

A Method to estimate the center of rigidity of buildings by using vibration recordings is presented in the paper.The method is based on the minimum coherence between translational motion and rotational motion at the center of rigigity.Defining the coherence area as the integration of coherence function in frequency domain,the center of rigidity can be easily found when the value of coherence area reaches minimum.