Abstract

Info

Title:: Experiment on RBT Model Test of Cantilever Retaining Wall Based on Sand Wet State

Author(s):: ZHANG Hong-bo; CUI Bing-bing; CHEN Qi; MENG Qing-yu; SONG Xiu-guang; School of Civil Engineering, Shandong University

Keywords:: RBT model; sand wet state; cantilever retaining wall; model test; earth pressure

Abstract:: In the actual operation process, the cantilever retaining wall was mostly combined with shift of retaining wall and rotation around the bottom of wall (RBT) deformation mode caused by external factors, and the wall back packing was often in the wet state, so the classical earth pressure theory could not reasonably reflect the actual force state. In order to reveal the earth pressure distribution law of cantilever retaining wall under soil moist and RBT mode,the cantilever retaining wall test device based on RBT mode was designed and fabricated, and the model tests of different RBT rotation displacements were carried out.According to the test results, the theoretical formula was verified.The results show that when the cantilever retaining wall exerts an outward rotation displacement, the wet sand has a more obvious pseudo cohesion, the earth pressure of the wall appears obvious trend of decreasing first and then increasing with the increase of wall rotation displacement, with the angle increasing, the horizontal earth pressure decreases, and the lower soil decreases more slowly. The calculation values of horizontal central soil pressure are greater than the measured values.