Studies on factors affecting the bearing performance of high-pile wharf

LYU Peng; YAN Zhen; DONG Sheng

doi:10.13984/j.cnki.cn37-1141.2023.06.006

Abstract：In addition to the influence of structure and material on the bearing performance of high-piled wharf,the strength of soil and the friction between pile and soil also have important influences on such performance.In the study,a three-dimensional finite element model of a high-piled wharf was estab-lished based on ABAQUS and compared with the testing results.The numerical simulation showed a good agreement with those revealed by the physical experiments.On this basis,the influences of soil strength,elastic modulus and pile-soil friction coefficient on the structural bearing performance were analyzed.The results showed that both soil strength and elastic modulus have a certain effect on the ul-timate bearing capacity of the structure.Under the same horizontal load,the greater the soil strength and elastic modulus,the smaller the horizontal displacement of the structure and the smaller the ben-ding moment.The soil strength has little effect on the maximum negative bending distance.The maxi-mum difference appeared at 1/4 from the bottom of the pile.The elastic modulus affected both the maximum positive and negative bending moments,and the maximum bending moment change was 10％～15％.The pile-soil friction coefficient also had a certain influence on the bearing performance of the structure.Within a certain range,with the increase of μ,the ultimate bearing capacity of the structure increased gradually,and its variation range increased gradually also.However,the influence of the fric-tion coefficient on the bending moment was mainly concentrated at the negative bending moment,and had little effect on the part affected by the positive bending moment.