Environmental vibration simulation of metro operation based on multi-boundary problem time domain boundary element method

被引：0
作者：
Li, Hongjun [1 ,2 ]
Yang, Jinqi [1 ,2 ]
Liu, Jiancheng [1 ,2 ]
Liu, Yan [1 ,2 ]
Yin, Xiaoshuai [4 ]
Lei, Weidong [3 ]
机构：
[1] Hebei Agr Univ, Coll Urban & Rural Construct, Baoding 071001, Peoples R China
[2] Hebei Agr Univ, Hebei Key Lab Struct Safety & Low Carbon Construct, Baoding 071001, Peoples R China
[3] Harbin Inst Technol Shenzhen, Civil & Environm Engn, Shenzhen 518055, Peoples R China
[4] Handan Design & Res Inst Water Conservancy & Hydro, Handan 056000, Peoples R China
来源：
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS | 2025年 / 176卷
基金：
中国国家自然科学基金;
关键词：
MTD-BEM; Environmental vibration; Metro operation; Influence coefficients; FINITE-ELEMENT; NUMERICAL-MODEL;
D O I：
10.1016/j.enganabound.2025.106249
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The environmental vibration problem induced by metro operation can be simplified as a semi-infinite domain multi-boundary wave problem. With the rapid development of metro networks, the vibration problems have an increasingly significant impact on adjacent living and working environments. Therefore, the demand for high-precision environmental vibration analysis is becoming more and more urgent. Finite element method faces bottlenecks such as numerical oscillations, artificial boundary dependence and low computational efficiency in dealing with semi-infinite domain problems. In this paper, a multi-boundary time domain boundary element method (MTD-BEM) is proposed. By placing the original point P and field point Q in same and different boundaries, the influence coefficients present different characteristics in terms of singularity. Therefore, the influence coefficients are classified and solved according to their characteristics. MTD-BEM has the advantages of high accuracy and low resource consumption, which significantly reduces the mesh division requirements and computational errors. MTD-BEM is validated by two examples. The results of MTD-BEM are in high agreement with those of finite element method (FEM) and have good stability. Finally, the method is used to simulate the environmental vibration. The displacement and spectrum of one-sided tunnel loading, sequential loading and simultaneous loading are successfully simulated.
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页数：15
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