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为研究在减震沟影响下邻近建筑物对拆除爆破振动的动力响应,以乌海市科技大楼爆破拆除为例,采用有无减震沟条件下所实测地震波数据,并利用ANSYS/LS-DYNA建立10层框架结构模型,对有无减震防护措施下邻近建筑物的动力响应进行模拟研究,得到建筑物的单元应力以及节点相对位移变化规律.研究结果表明:相对于无减震沟而言,大楼爆破拆除产生的地震波在减震沟影响下,所建立的邻近框架结构模型的单元应力在各方向降低范围在20%到36%,节点在Y方向的相对位移衰减率为47.43%,而节点在X与Z方向的相对位移没有明显变化.
In order to study the dynamic response of neighboring buildings to the demolition blasting vibration under the influence of the shock absorber ditch, taking the blasting demolition of Wuhai Science and Technology Building as an example, the measured seismic data under the condition of the dashpot is used, and the ANSYS / LS-DYNA The 10-story frame structure model is established to simulate the dynamic response of nearby buildings with and without shock-proofing measures, and the variation law of unit stress and node relative displacement of the building is obtained.The results show that compared with no-shock ditch , The seismic stress generated by blasting demolition of the building under the influence of the shock-absorbing gully reduces the unit stress of the adjacent frame structure model in all directions by 20% to 36% and the node relative attenuation in the Y direction by 47.43% The relative displacements of nodes in the X and Z directions did not change significantly.