Model Test on Retaining Wall Constructed with Soilbags
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Abstract:
The retaining wall composed of soil bag has certain flexibility and can have lateral distortion under the pressure, which can reduce the pressure effectively and increase the safety of retaining wall. Earth pressure is an important load for the section design and stability check of retaining structures, and it is directly relevant to the wall displacement mode. A model test was performed on a retaining wall constructed with soilbags, which showed that (1) the deformation mode of the wall and the failure mode of the backfill soil are composed of translational and rotary modes; (2) The vertical distribution of earth pressure of the retaining wall composed of soilbags is close to Coulomb active earth pressure; and (3) the earth pressure decreases from the inside out along the horizontal direction. A force balance equation was established to explain the horizontal decreasing of the earth pressures within the retaining wall.
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