Numerical analyses for mechanical behavior of cut-and-cover tunnel with precast arch type

The thickness of the material can be thinned because arch cut-and-cover tunnel has the support mechanism by the axial force, and the ground reaction force due moderate deformation can be expected thereby making it be dynamically advantageous, therefore the arch cut-and-cover tunnel has become more widely used. An important characteristic of the arch cut-and-cover tunnel is that the thickness of the material can be thinned because precast arch type has the support mechanism by the axial force. However, there is a different stress state surrounding the structures between normally excavated tunnels and cut-and-cover tunnels, it should be considered at designing. Therefore, finite element method was carried out to examine the mechanical behavior of the precast arch cut-and-cover tunnel considering construction procedure.

keywords: 아치형 개착식 터널, 프리캐스트, 시공과정, 축력, Arch cut-and-cover tunnel, precast, construction procedure, axial force

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Article Contents

Vol.11 No.3

Numerical analyses for mechanical behavior of cut-and-cover tunnel with precast arch type

Abstract

Reference

(사)한국터널지하공간학회