Stability Analysis Of The Reinforced Retaining Wall Under Earthquake

Frequent earthquake urged people to study the response of various structures under earthquake. Using three-dimensional fast Lagrangian method (referred to as FLAC3D), it was carried out numerical simulation to stability and deformation of the reinforced retaining wall under different seismic intensity for the embankment of Binjiang Road in Chongqing. Compared with other related study results, the main results as follows:(1) The wall's lateral displacement of the reinforced retaining wall under earthquake was bigger than under static, and the bigger seismic intensity, the faster the displacement increasing. The deformation was bigger and bigger from the bed to top of the wall.(2) For the reinforced retaining wall based on soil foundation, there was a differential settlement between filler and wall under strong earthquake( especially under 8 degree). The filler was vibrated and compacted, the bar appeared a distinct stretcher strain, it was presented big in top and small in bottom of wall.(3) For different seismic intensity, the bar tension force in reinforced wall was still decreased with the height of wall and the maximum tension was appeared in the bottom layer. The spacing between the wall face and maximum tension point of various layer was increased stably from bottom layer to top layer.(4) The yield unit in reinforced retaining wall was increased with the seismic intensity increasing, especially in the intensity of 8 degree, most of the units have been yield. And with the seismic intensity increased, the potential rupture surfaces of the reinforced wall was spread to the rear part of the wall body. The greater the seismic intensity, the greater scope of damage occupied in the reinforced wall.