Field test of static and dynamic response of reinforced earth retaining wall under vehicle load

In order to examine the static and dynamic response of reinforced earth retaining wall under vehicle load, this paper takes the modular reinforced earth retaining wall in the K139+100~K139+400 section of the 330 national highway as the prototype. By burying the soil pressure box, flexible displacement meter, accelerometer and other components, the reinforcement tensile strain, wall lateral earth pressure, stiffened body lateral earth pressure for retaining wall and lateral deformation are tested. The test results show that when the vehicle dynamic load is applied, the response acceleration on the upper part of the retaining wall is much larger than that of the lower layer; when the vehicle load is applied on the reinforced body, the vehicle driving distance has little effect on the earth pressure in the reinforced body; when the vehicle load is applied behind the reinforced body, the vehicle driving distance has great effect on the earth pressure in the reinforced body. Whether under the vehicle static load or under the vehicle dynamic load, the lateral earth pressure of the reinforced body is much larger than the lateral earth pressure behind the face wall.