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http://dx.doi.org/10.12652/Ksce.2013.33.4.1541

Analysis of Response Change of Structure due to Tunnel Excavation Conditions in Sand Ground  

Son, Moorak (Daegu University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.33, no.4, 2013 , pp. 1541-1549 More about this Journal
Abstract
This study investigates the response of structures to tunnelling-induced ground movements in sand ground, varying tunnel excavation condition (tunnel depth and diameter), tunnel construction condition (ground loss), ground condition (loose sand and dense sand). Four-story block-bearing structures have been used because the structueres can easily be characterized of the extent of dmages with crack size and distribution. Numerical parametric studies have been used to investigae of the response of structures to varying tunnelling conditions. Numerical analysis has been conducted using Discrete Element Method (DEM) to have real cracks when the shear and tensile stress exceed the maximum shear and tensile strength. The results of structure responses from various parametric studies have been integrated to consider tunnel excavation condition, tunnel construction condition, and ground condition and provided as a relationship chart. Using the chart, the response of structures to tunnelling can easily be evaluated in practice in sand ground.
Keywords
Structure response; Sand Ground; Tunnel excavation; Construction condition (Ground Loss); Ground condition; Block structure; Damage estimation;
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