平面SV波入射下地上建筑群-地铁隧道群动力相互作用研究

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (4) : 27-37.

论文

刘中宪1,2，王建旭1，金立国3

作者信息 +

Research on dynamic interaction between above ground building-group and subway tunnel-group under incident plane SV-waves

LIU Zhongxian1,2，WANG Jianxu1，JIN Liguo3

Author information +

文章历史 +

摘要

本文采用一种高精度间接边界元方法（IBEM），研究了平面SV波入射下地上建筑群-地铁隧道群的动力相互作用问题。研究表明：“建筑群-隧道群”系统存在显著的动力相互作用，其规律与入射波性质、建筑物和隧道数量排布等因素密切相关。通过对比不同建筑物数量对隧道动力响应的影响，能够发现：低频波作用下，建筑物对下穿隧道的动力响应不仅有放大作用，而高频波作用下则会削弱隧道的动力响应，最多可以降低37.5%左右。从频域分析中可以看出：隧道对地震波有较强的屏蔽作用，从而降低了其上建筑群的地震响应。建筑群的存在降低了各个单体建筑的动力响应，但在高频波作用时位于建筑群来波一侧的建筑会产生较大的动力响应。本论文研究成果可为城市建筑群-地铁隧道群的动力相互作用分析以及地上建筑和地铁隧道的抗震设计提供理论依据。

Abstract

In this paper, a high-precision indirect boundary element method (IBEM) is used to study the dynamic interaction between aboveground building group and subway tunnel group under SV wave excitation. The results show that there is a significant interaction between the building group and tunnel group, and its basic law is closely related to the nature of the incident wave, the number of buildings and tunnels. By analyzing the influence of building numbers on tunnel response, it can be found that The low frequency wave action amplifies the dynamic response of the building to the underpass tunnel. In contrast, the high frequency wave action weakens the dynamic response of the tunnel by up to about 37.5%. From the frequency domain analysis, it can be seen that the tunnel has a strong shielding effect on the seismic waves, thus reducing the seismic response of the buildings. The presence of the aboveground building group reduces the dynamic response of each individual building, but the building located on the incoming wave side of the group produces a larger dynamic response during high-frequency wave action. The research results of this paper provide some guidance for the dynamic response analysis of urban building-group and the construction of the underground subway tunnel-group.

导出引用

刘中宪1,2，王建旭1，金立国3. 平面SV波入射下地上建筑群-地铁隧道群动力相互作用研究[J]. 振动与冲击, 2024, 43(4): 27-37

LIU Zhongxian1,2，WANG Jianxu1，JIN Liguo3. Research on dynamic interaction between above ground building-group and subway tunnel-group under incident plane SV-waves[J]. Journal of Vibration and Shock, 2024, 43(4): 27-37

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