|Table of Contents|

Wave Response of Shallow Buried Tunnel Under Partially Concentrated Pulse Load(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2019年03期
Page:
110-116
Research Field:
Publishing date:

Info

Title:
Wave Response of Shallow Buried Tunnel Under Partially Concentrated Pulse Load
Author(s):
PENG Yue-hui1;  TAO Biao2;  LIU Xin-lei2;  GENG Da-xin2;  WANG Ning2
(1. Nanchang Railway Survey and Design Institute Co., Ltd., Nanchang 330002, Jiangxi, China; 2. School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, Jiangxi, China)
Keywords:
shallow buried tunnel;  local concentrated load;  Laplace transformation;  Graf coordinate transformation;  wave response
PACS:
TU312
DOI:
-
Abstract:
Based on Hamilton's theory and elastic wave theory, the dynamic response of a half-space tunnel subjected to locally concentrated transient impulse loads was studied by analytic method. Lining was simulated by Hamilton thin-shell theory and soil was simulated by elastic medium dynamics theory. Semi-analytical solution of transient concentrated load problem of circular lining in half space was solved by wave function expansion method, Graf coordinate transformation method and Laplace transformation method and their numerical inverse transformation. Through MATLAB calculation, the dynamic response characteristics of lining stiffness, soil wave velocity and lining circumferential angle at different locations of tunnel were analyzed. The results show that the amplitude of tunnel response decreases with the increase of burial depth. The response amplitude varies from angle to angle, and the response of top of tunnel is larger than that of other locations. The displacement and stress of outer surface of lining decreases with the increase of wave number of soil. When the lining stiffness increases, the attenuation range of the response is different in the circumferential position, and the attenuation of the amplitude at the bottom of the tunnel is the largest.

References:


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Last Update: 2019-05-23