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Authors |
유남재 ; 이희광 ; 박병수 ; 정길수 ; 심도식 |
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Keywords |
토압 ; 베딩조건 ; EPS ; 강성관 ; Earth pressure ; Bedding condition ; EPS ; Rigid pipe |
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Abstract |
In this paper. large scale experimental model tests were performed to investigate the distribution of earth Pressure acting on embedded rigid pipes having different bedding conditions. For these tests, very light weighted EPS blocks were installed at top and bottom of the rigid pipe and Jumuniin Standard Sand was used as a ground material. As results of model tests, for the case of no bedding on the pipe. the measured pressure at the bottom of the pipe was 4.96 tf/㎡ whereas they were in the range of 1.87~4.35 tf/㎡ in the case of EPS beddings being installed at the top and the bottom of the pipe. Therefore. for the case of EPS bedding being installed, the ratio of reduced pressures acting on the pipe. compared with the case of no EPS beddings, were in the rage of 16~62%. As a result of parametric test, with changing the locations of EPS bedding. the trend of reducing the stress acting on the pipe was in the order of bottom bedding, top bedding, and top and bottom bedding. Effect of bedding positions on the reduced magnitude of acting pressure on the pipe was more significant in the case of top bedding than in the case of the bottom bedding.
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