The Deformation Law and Stress Mechanism of Wrapped reinforced and Counterfort Combined Retaining Wall

Abstract:

Apply centrifuge model test and FLAC3D simulation to understand high filled project of Shanghai about the deformation law and stress mechanism of combined retaining wall that wrapped reinforced retaining wall combined with counterfort retaining wall. Centrifuge model test’s results show that the horizontal displacement of combined retaining wall is smaller, and that combined retaining wall can better control the horizontal displacement of high filling. Based on centrifuge model test, FLAC3D was used to simulate the horizontal earth pressure of combined retaining wall, and compare horizontal displacement and horizontal earth pressure with wrapped reinforced retaining wall and counterfort retaining wall with the same condition, simulation results show that counterfort retaining wall can control horizontal displacement efficiently and wapped reinforced retaining wall shares most of horizontal earth pressure. Based on the results of test and simulation, some suggestions and references are provided for the design of combined retaining wall of high filled project.

Key words:counterfort retaining wall; wrapped reinforced retaining wall; combined retaining wall; centrifuge model test; FLAC3D