Discrete Element Analysis on Masonry Structure under Differential Settlement Induced by Tunnel Construction

doi:10.3973/j.issn.1672-741X.2013.12.006

Tunnel Construction ›› 2013, Vol. 33 ›› Issue (12): 1010-1014.DOI: 10.3973/j.issn.1672-741X.2013.12.006

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Discrete Element Analysis on Masonry Structure under Differential Settlement Induced by Tunnel Construction

LI Haipeng¹, WANG Jian¹, HAN Xuan², WANG Fa²

(1. School of Civil Engineering and Traffic, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2. BGI Engineering Consultants Ltd., Beijing 100038, China)

Received:2013-09-17 Revised:2013-10-25 Online:2013-12-20 Published:2013-12-27

Abstract

Abstract:

A numerical model is built for masonry structures by means of discrete element method, with the masonry structure being regarded as a threephase composite material consisting of block, mortar and cohesion in between. The pattern of cracking and deformation of masonry structures under differential settlement induced by tunnel construction is studied on basis of energy theory. The static energy peak index of masonry structures under differential settlement is proposed by means of energy theory analysis. The study results show that the discrete element numerical simulation method can be used to analyze the influence of differential settlement on the safety of masonry structures and that the mentioned method can provide a new approach for the evaluation of the safety of masonry structures disturbed by surrounding construction activities.

Key words: Beijing Metro, masonry structure, differential settlement, discrete element analysis, UDEC (Unitized Digital Electronic Calculation), crack analysis, energy analysis, static energy peak index

LI Haipeng, WANG Jian, HAN Xuan, WANG Fa. Discrete Element Analysis on Masonry Structure under Differential Settlement Induced by Tunnel Construction[J]. Tunnel Construction, 2013, 33(12): 1010-1014.

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Discrete Element Analysis on Masonry Structure under Differential Settlement Induced by Tunnel Construction

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