Model test on sand retaining wall reinforced with denti-strip inclusions
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摘要:
In conventional reinforced soil structures, the reinforcements are often laid hori-zontally in the soil. In this paper, a new concept of soil reinforced with denti-strip inclusions was proposed and a series of laboratory model tests were carried out on sand retaining wall reinforced with denti-strip inclusions. Besides the horizontal displacements of the facing, the lateral earth pressures acting on vertical elements were measured. A microscopic measurement was performed to investigate the deformation and progressive failure of the sand within model retaining wall. Based on the image analytical technique, the bearing capability and interaction mecha-nism of reinforced sand retaining wall were analyzed. The model of the initial shear failure and potential failure surface were also put forward. From the ex-perimental results, it is shown that denti-strip inclusions can increase the bearing capability of retaining wall significantly and restrict the facing displacements effi-ciently, as compared with conventional horizontal reinforcement.