Additional Lateral Soil Pressure Due to Vehicle (at Constant Speed) The Distribution and Comparison to its Static Load

On roads that cross slopes, the stability of the retaining wall is very important to keep the road conditions being passed safely. The dimensions of the retaining wall are directly related to the magnitude of the horizontal pressure of the soil that occurs and must be held. Practically, the effect of ground pressure due to traffic load is simulated as a uniform load along the width of the road. The amount of horizontal pressure and distribution that occurs due to static and moving loads is not the same. Therefore, this study aims to provide information on the relationship between the weight of the vehicle with the horizontal pressure that occurs when passing. The vehicle is simulated moving at a constant speed along the track. The amount of lateral pressure due to the vehicle is measured by a pressure sensor with a horizontal distance of 0.5 m up to 1.5 m and a depth of 0.5 m up to 1.5 m. The magnitude of the maximum horizontal pressure was measured compared to the analysis due to static load. The results showed low speeds which are less than 10 km/h have the same horizontal pressure distribution pattern due to their static-simulated position. The maximum horizontal pressure difference between the Boussinesq approach and the instrumentation results in no more than 1.5 kPa.