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基于振动在建筑物内的传递特性,提出一种新的环境振动预测方法——振动分频传递预测方法。针对北京地铁4号线附近某砌体结构开展现场振动测试试验,并建立了该砌体结构的有限元模型,利用振动分频传递预测方法进行相关数值模拟计算。试验及数值计算结果表明:有限元模拟计算下的结果与实测结果基本一致,验证了该方法能够有效地预测地铁运行引起邻近建筑物的振动响应。
Based on the transmission characteristics of vibration in the building, a new method of environmental vibration prediction-vibration frequency division transfer prediction is proposed. In order to carry out on-site vibration test of a masonry structure near Beijing Subway Line 4, the finite element model of the masonry structure is established and the relevant numerical simulation calculation is carried out by using the vibration frequency division transfer prediction method. The experimental results and the numerical results show that the results of the finite element simulation are basically consistent with the measured results. The results show that the proposed method can effectively predict the vibration response of the adjacent buildings caused by the subway operation.