학술논문
우산망 보강(Umbrella Arch) 공법 보강재의 보강효과
Document Type
Article
Author
Source
2. 한국방재학회 논문집 11. 4 (2011): 143-150.
Subject
Language
Korean
ISSN
17382424
Abstract
This paper deals with the reinforcing effects of the reinforced material in the Umbrella Arch Method(UAM). Recently, UAM has been commonly used in Korea to decrease ground movement around a tunnel and stabilize the surface structure adjacent to a tunnel in tunnel construction. In this study, 3-dimensional finite element analyses were carried out for two ground conditions(soil and weathered rock) and for several overburden depths and installation angles of a reinforced material. But ground improvement by grouting was ignored. Displacements at the front of the tunnel crown were obtained from numerical analysis, and the behavior angles in the tunnel face were calculated by using the displacements. The results showed that settlement by tunnel excavation was increased with the increase of overburden depth but was decreased with the increase of overlap length of the reinforced material.