트렌치 굴착에 있어서 경량 흙막이 구조체의 안정성 해석
Stability Analysis of the Light Weight Earth-Retaining Structure in the Trench Excavation
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Abstract
In trench excavation, essential factor of earth-retaining temporary work structure should be easy taking to pieces and movement, and dead weight must be less. This paper studies about the light weight material and application as earth-retaining structure to prevent the slope failure of sand soil ground caused by the variation of groundwater level in trench excavation. That is, light weight earth-retaining structural is proposed and a simulation with FEM on application of proposed structural in sandy soil is presented. The results are summarized as follows; ① The study proposed FRP H-shaped pannel for the light weight member, and also presented estimation method about stability. ② Mechanical property (bending moment, shear force, axial force, displacement) were changed according to groundwater level, but these values had been within enough safety rate and allowable stress. Therefore, proposed light weight pannel with FRP is available for bracing structure in trench excavation.
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