In order to study building vibration with different foundations induced by subway operation, a five-story building with the independent foundation or the strip foundation or the pile foundation was modeled. The displacement, the velocity and the acceleration of the floor in the vertical and the horizontal direction ranging from 1~80Hz were analyzed. The results showed that: (1) The displacement, the velocity and the acceleration of the first floor in the vertical direction are larger than those in the horizontal direction for all foundations; (2) The value of the acceleration in the horizontal direction is increased from the first floor to the top floor for the inde-pendent foundation and the strip foundation. The horizontal acceleration is almost the same from the first floor to the fourth floor for the pile foundation. However, the horizontal acceleration of the fifth is bigger than other floors. The vertical acceleration of different floors has no relationship for all foundations.%为研究地铁运营时,不同基础型式建筑物的振动响应规律,对独立基础、条形基础和桩基的五层框架结构,进行了1~80 Hz频段的竖向(水平向)振动位移、速度以及加速度分析,得出:① 三种基础型式,建筑物一层地面中心的竖向振动位移、速度和加速度普遍大于水平向振动位移、速度和加速度.② 独立基础和条形基础,随着楼层的增大,水平向振动加速度增大.桩基水平向振动加速度从第1层到第4层,无明显规律.第5层的水平向振动加速度普遍大于前4层的振动加速度.竖向振动加速度随楼层的增大,都没有明显规律.
展开▼
