A Case Study on the Feed-Back Analysis and the Reinforcement Plan using the Measurement Data of Excavation Site close to the Existing Underground Box

기존 지하 Box 근접 굴착공사 현장의 계측결과를 이용한 역해석 및 보강방안의 적용 사례

Massive underground excavation can be carried out recently due to the technical development of the excavation for retaining wall. Feed-back analysis using field measurement results is recommended to secure the stability of the construction because calculated values at stages of the design and the construction are uncertain. Reinforcement plan should be established based on the result of it. This study deals with the underground excavation site, which is under construction and is close to structure(subway) at downtown area. The result of feed-back analysis on the measurement data of displacement at multi-soil layers was reflected to make a plan for safe construction. This case study can be useful information for contingency plan on abnormal displacement which can be occurred at similar underground excavation.