强夯地震效应浅析

为了评估强夯地震效应对周边建筑物的影响，从时域、频域等角度分析强夯地震效应的衰减规律，给出了强夯地震动加速度。与距离R的衰减关系。对强夯地震信号做频谱分析表明，强夯地震波振动主频一般都小于10Hz，其地震效应与天然地震较为接近，因此，选用《中国地震烈度表》(GB／T17742—1999)作为衡量振动对周围建筑物影响的标准，并由此确定一定能级的强夯振动对周围建筑物的影响范围。

Simple analysis for the seismic effect of dynamic compaction

In order to evaluate the seismic effect of dynamic compaction affecting around buildings,we study the attenuation rule of the seismic effect of dynamic compaction from time field,frequency field,etc,and give the attenuation relations between acceleration a and distance R by researching on the engineering example.Based on the analysis for the frequency spectrum of seismic signals,the result shows that the main frequency of vibration inspired by dynamic compaction is usually less than 10 Hz,and the seismic effect is close to nature earthquake.So,we elect China Earthquake Intensity Table(GB/T 17742-1999)as the standard judging that the vibration affects around buildings,and then,confirm the range of the infection.