Behavior of ter Ground in Rectangularly Crossed Area due tu Tunnel Excavation under the Existing Tunnel(Ⅱ)

The behavior of the ground in crossed zone due to the excavation of new lower tunnel rectangularly crossed to that was studied by model tests and numerical analysis in shallow cover. Results of the model tests show that earth pressure of the ground in crossed zone were redistributed due to the longitudinal arching effect by the excavation of lower tunnel. By the numerical analysis, minimum principal stress in crown of single tunnel has more decrease than parallel tunnel or crossed tunnel. Vertical stress at rectangularly crossed tunnel decrease more than single tunnel by stress shadow.

keywords: model test, numerical analysis, crossed tunnel, stress path, 모형실험, 수치해석, 교차터널, 응력경로

Reference

(1989) Developments in Geotechnical Engineering,

(19891989.) Deformations caused by surface loading and tunnelling The role of elastic anisotropy,

(1996) Geotechnical aspects of underground construction in soft ground,

(1997) 국내 터널건설의 현황조사 및 교차터널의 설계법 개발 연구.,

(2005) 이상덕과 홍석봉 기존터널에 근접한 직각교차 하부터널의 굴착에 따른 교차부지반의 거동,

바로가기메뉴

Article Contents

Vol.7 No.2

Behavior of ter Ground in Rectangularly Crossed Area due tu Tunnel Excavation under the Existing Tunnel(Ⅱ)

Abstract

Reference

(사)한국터널지하공간학회