Relationship Between Wall Displacement and Safety Factor of Temporary Earth Retaining Structures Through Numerical Analysis

Yeonoh Moon; Seongwo Lee; Hyuksang Jung

doi:10.14481/jkges.2026.27.2.11

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2026 Vol.27, Issue 2 Preview Page Next Page

Relationship Between Wall Displacement and Safety Factor of Temporary Earth Retaining Structures Through Numerical Analysis 수치해석을 통한 가설 흙막이 벽체의 변위-안전율 관계

1 February 2026. pp. 11-18

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Abstract

This study investigates the relationship between wall displacement and the factor of safety of temporary retaining walls through numerical analysis. Numerical analyses were performed considering various conditions, including ground conditions, separation distance from adjacent foundations, foundation size, and applied loads. The analyses assumed a situation in which the retaining wall is installed in adjacent ground where foundations and tunnels have already been constructed. The results indicate that wall displacement is strongly influenced by geometric conditions, while the factor of safety is mainly affected by factors related to the mobilization of resistance and sliding of the retained ground. In addition, when the wall displacement satisfied the design criteria, the factor of safety was also found to meet the required standards. However, when the displacement exceeded the allowable limits, the reliability of the factor of safety was significantly reduced.

Keywords

Retaining wall

Safety factor

Numerical analysis

Displacement behavior

본 연구에서는 수치해석을 통해 가설 흙막이 벽체에서 발생하는 변위와 안전율의 관계를 분석한다. 2차원 평면변형률 조건에서 지반조건, 인접기초 이격거리, 기초의 크기, 하중 등의 다양한 조건을 고려하여 수치해석을 수행하며, 기초 및 터널이 시공완료된 인접 지반에 벽체가 설치되는 경우를 가정하여 연구를 수행한다. 연구 결과 벽체의 변위는 기하학 조건들에 영향을 많이 받으며, 안전율의 경우 배면지반의 활동과 저항에 관여하는 인자들이 영향을 미치는 것을 알 수 있었다. 또한, 벽체의 변위가 설계기준에 만족하는 경우 안전율 또한 만족하였지만, 기준치를 초과하는 변위가 발생된 경우 안전율에 대한 신뢰도가 매우 떨어지는 것으로 나타났다.

키워드

가설 흙막이

안전율

수치해석

벽체 변위

References

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Information

Publisher :Korean Geo-Environmental Society
Publisher(Ko) :한국지반환경공학회
Journal Title :Journal of the Korean Geo-Environmental Society
Journal Title(Ko) :한국지반환경공학회 논문집
Volume : 27
No :2
Pages :11-18
Received Date : 2025-12-18
Revised Date : 2026-01-07
Accepted Date : 2026-01-20
DOI :https://doi.org/10.14481/jkges.2026.27.2.11

Journal of the Korean Geo-Environmental Society ISSN:1598-0820(Print) 2714-1233(Online) 한국지반환경공학회 논문집

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