|Table of Contents|

Model Test of Soil and Metro-tunnels Interaction in Earthquake Activities(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2009年第03期
Page:
295-298
Research Field:
水资源与地质工程
Publishing date:

Info

Title:
Model Test of Soil and Metro-tunnels Interaction in Earthquake Activities
Author(s):
LIU Ni-na;  MEN Yu-ming;  LIU Yang
(School of Geological Engineering and Surveying, Chang'an University, Xi'an 710054, Shaanxi, China)
Keywords:
soil-underground structures interaction;  horseshoe shape tunnel;  earthquake activities;  dynamic response
PACS:
P642.2;U452.1+1
DOI:
-
Abstract:
A model is set up by the similarity theory as 1/20 of the horseshoe shape metro tunnel. The dynamical response of the model that the tunnel locates in the single soil layer and typical soil layers and affects the earthquake activities is analyzed by the numerical software. The results show that when the tunnel is excavated in the single soil layer, the vertical displacement is similar as settlement. When the tunnel is located at the typical soil layers, there are torsions as well as the settlement. No matter which kind of site the tunnel is, the maximum values of the acceleration, vertical displacement both are got at the top of the tunnel. In the signal layer soil the maximum acceleration is 2.29 times of that at the middle side slab of the tunnel. The principle and shear stresses at the top and side slab of the tunnel are bigger than which those at other points. These show that the top and the side slab are the place which affect the strong force when there are earthquake activities. Some measurement should be taken in these points in the tunnel design.

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Memo

Memo:
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Last Update: 2009-09-20