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Evaluation of Lateral Earth Pressure on Buried Pipes in Soft Ground Undergoing Lateral Movement  

홍원표 (중앙대학교 공과대학 건설 환경공학과)
한중근 (대림대학 토목과)
배태수 (선주토건)
Publication Information
Journal of the Korean Geotechnical Society / v.18, no.5, 2002 , pp. 55-65 More about this Journal
Abstract
Model tests were performed to investigate the mechanism of lateral earth pressure on a buried pipe, which was installed in a plastic flowing soil mass undergoing lateral movement. On the basis of failure mode tests, the equation of lateral earth pressure to apply Maxwell's visco-elastic model was proposed to consider the soil deformation velocity. Through a series of model tests of differential soil deformation velocity, lateral earth pressure of theoretical equation was compared with experimental results. When lateral soil movement was raised, the lateral earth pressure acting on buried pipe increases linearly with the soil deformation velocity. It shows that the lateral earth pressure on buried pipe is largely affected by soil deformation velocity. When plastic soil movement was raised, lateral earth pressure predicted by theoretical equation showed good agreement with experimental results. Also, coefficient of viscosity by theoretical equation had a good agreement with direct shear test results.
Keywords
Buried pipe; Lateral earth pressure; Lateral movement; Model tests; Soil deformation velocity; Visco-elastic model;
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