【摘要】 为了确保地基强夯施工时建筑物的安全,有必要对地基强夯引起的周边建筑振动进行现场实测和分析评估。以毗邻在建建筑物的场地地基强夯施工为工程背景,基于实测数据研究了地面振动波的衰减规律,分析了夯击能级、测点距夯源距离等因素对振动波传播规律的影响。研究了设置空沟后隔振沟后振动波的传播规律。从强夯振动的峰值加速度、峰值速度、振动主频等方面对振动波在隔振沟后建筑物中的传播规律进行了研究,并对强夯施工对结构的安全性影响进行了评估。更多还原

【Abstract】 It is essential to carry out the field measurement and analysis on the adjacent buildings to ensure the structural safety.The dynamic compaction construction of a playground was taken as the example to examine the dynamic responses of the adjacent buildings.Based on the measured results,the propagation of the wave induced by dynamic compaction of foundation under varied parameters such as the energy levels of the dynamic compaction and the distance from the compaction source,is discussed.The propagation of the wave after trench is also obtained.The propagation of the wave in building is investigated in the aspect of peak acceleration,peak velocity and dominant frequency,etc.The structural safety is assessed based on the measured dynamic responses of the concerned buildings.更多还原