Effect of Reinforcement Width on the Behavior of Buried Pipe in Sandy Soil

摘要

This paper deals with the problem of a flexible pipe with internal diameter of 110 mm buried in laboratory soil box facilities for this study. The box is filled with sand reinforced by geogrid layer of different widths to investigate the effect of geogrid width layer on the performance of buried pipe subjected to static load. Two type of reinforcement used (geogrid and geocell). The geogrid location is kept constant at a depth of 0.5d (do is o the pipe o diameter) below the loading plate. The results show that the reduction in crown strain in loose sand, when the geogrid width equals 1B iso13% in comparison with results of tests excluding geogrid, this percent reduces to 11% when the geogrid width equals 2B, while the reduction percent in medium sand becomes 14% and 12% when the geogrid width was B and 2B, respectively and becomes in dense sand 15 % and 11% when the width of geogrid change from B to 2B.