波浪作用下后板桩高桩码头结构受力特性研究

摘要

Taking a wharf with back sheet pile as the study project ,the impact of its foundation soil modulus change on the stress of the wharf structure under waves was analyzed by using ABAQUS .The results indicate that nonlinear relation-ship exists between the displacement of the wharf structure and the soil modulus .With the increase of the modulus ,the horizontal displacement decreases with diminishing values ;the maximum compressive stress and tensile stress of the wharf structure are mainly concentrated at the lower part of the cap ,and the maximum stress in the structure changes little with soil modulus ;the horizontal displacement curves of the 4 piles in the wharf structure are basically the same ;the zero dis-placement point exists 25 m away from the pile top ,and its position does not change with soil modulus .%以某海堤后板桩高桩码头工程为背景，采用 ABAQUS 有限元软件对波浪作用下，后板桩高桩码头地基土体模量变化对其结构受力的影响进行了分析。计算结果表明：后板桩高桩码头结构和土体的水平位移与土体模量之间存在明显的非线性关系，随着模量的增大，水平位移逐渐减小，位移的变化量也逐渐减小；码头钢筋混凝土结构的最大压应力和最大拉应力均主要集中在承台的下部，结构中的最大应力值随土体模量的变化较小；码头结构中4根桩的桩身水平位移曲线基本一致，在距桩顶约25 m 处存在位移零点，且位移零点的位置基本不随土体模量变化。