The Lateral Bearing Behavior of Single Pile Considering Scour Effect

Abstract

Three group model tests are designed to study the change law of lateral bearing behavior at different scour depths and the local scour is simulated by changing dimensions of scour hole. The favorable effect of remaining sand above the scour depth line is considered to get the calculation method of equivalent depth. Simulation was carried out using LPILE and the results were compared with those obtained from model tests. The results show that the equivalent scour depth formula derived based on the principle of invariable ultimate soil resistance is reliable, and the relative error between the LPILE calculated value and the test value is 13-17%, which indicates that the actual situation can be accurately predicted. The sensitivity of the scour depth, scour slope angle, and scour width parameters were analyzed to determine their effects on the scour hole and the validity of the theoretical equation; the results show that the impact of the three parameters decreased in turn, which can provide some reference for engineering design.