Study On Stresses And Deformations Of Retaining Wall In The Widening Of Hangjinqu Expressway

In expressway widening, the requisition is a big problem, often use the project of settingretaining wall to shrink the slope of embankment. But in the progress of using the retainingwall, the problems of how to control differential settlement and which the design calculationshould be used are needs to solve. Centered the regular of retaining wall in Wideningengineering, aim to control differential settlement， beginning with the differences of thewiden road and new road’s wall, and combining with numerical simulation and localmonitoring to study the regular and control the differential settlement. Some results areachieved in4aspects.1. Pose the main questions of retaining wall in widening road with analyzing theretaining wall in the widening of Hangjinqu expressway.2. Obtained the earth pressure of retaining structure and the deformation of displacementdata by local monitoring. After analysis, found the forced deformation of the retaining wall：retaining wall has a deformation mode of RTT, the distribution of the soil pressure is theUpper is big, and the middle and lower is volatility of growth with some volatility.3. Use finite element analysis method, the simulation results of retaining wall in newroad and widen road were analyzed. Finally, get the differences about the distribution of earthpressure and soil pressure values between the retaining wall in new road and widen road.4. Based on the finite element model of retaining wall in widen road, analyzes the newembankment filling of severe, elastic modulus and the elastic modulus of new foundation towiden the road embankment retaining wall stress and the influence of differential settlement.