用撞击原理分析高耸结构的竖向地震作用

在强烈地震作用下 ,高耸结构的破坏除了因为水平地震的作用外 ,竖向地震作用的影响也很大。本文根据撞击原理对高耸结构的竖向地震作用进行了分析计算 ,表明竖向地震作用的大小主要取决于地震烈度和场地土的类别 ,烈度和场地土类别较高时 ,结构的上部有拉力产生。烈度和场地土类别越高 ,上部结构的受拉范围和最大拉力越大 ;地基基础和下部的质量越大 ,受拉范围下移。

An Analysis of the Action of Vertical Earthquake on High Buildings with the Collision Theory

Under the action of intensive earthquake, the damages to high buildings are not only caused by horizontal earthquake action, but also caused by vertical earthquake action. Based on the collision theory, this paper analyzes and calculates the vertical earthquake action on high buildings, showing that the magnitude of vertical earthquake action is principally depended by the intensity of the earthquake and the sort of seismic site. And when the intensity of earthquake and the sort of seismic site are high, the tension force will occur in the upper part of the structure. The higher the intensity of the earthquake and the sort of seismic site, the larger the tension force and its scope.