社区尺度复杂斜入射波场作用下场地-建筑群耦合作用模拟方法：FK-SE-MDOF方法

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Abstract The site-city-interaction (SCI) effect will drastically modify the seismic wave field and the response of buildings. Based on the development status of SCI effect simulation approach, taking advantages of the spectral element method (SEM) and the multi-degree of freedom (MDOF) model, (i.e., SEM can efficiently simulate the three-dimensional seismic wave field propagation, and MDOF can simulate a large number of buildings at the same time), and combining with the frequency wavenumber domain (FK) method to input the seismic wave field by applying equivalent seismic loads, the FK-SE-MDOF approach is established. This approach can simulate the oblique incidence input of multiple wave-types (P, SV and SH) in the SE-MDOF coupling model, and solved the problem that the influence of nonlinear characteristics of buildings, spectrum characteristics, seismic wave-type and incidence angle cannot be considered simultaneously in previous three-dimensional SCI effect simulations. Firstly, the theory of the approach is introduced; Then, the correctness of the approach is verified by simulating an existing shaking table test; Furthermore, a series of ideal site-city-interaction models are established, and the influence of incident angle and wave-type on SCI effect is mainly discussed; Finally, some useful conclusions are obtained. The approach can realistically reflect the impact of SCI effects while reflecting the influence of building foundation contours on the seismic wave field. It is suitable for community-scale buildings where it is necessary to consider foundation contour information and can provide quantitative guidance for urban planning, seismic design, risk assessment and post-earthquake rescue.

Key words： SCI effect FK-SE-MDOF approach oblique incidence building clusters community scale

Received: 15 June 2023 Published: 28 February 2024

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	Articles by authors
	BA Zhenning1
	2
	3
	FU Jisai1
	WANG Fangbo1
	LIANG Jianwen1
	NIU Jiaqi1

Cite this article:

BA Zhenning1,2,3, et al. A simulation approach for solving the site-city-interaction effects under oblique incident waves on a community-scale[J]. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(4): 1-11.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2024/V43/I4/1

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