开挖过程中遮帘式板桩码头结构变形二维数值模拟

Two-dimensional Numerical Simulation of Covered Sheet Pile Wharf Structure Deformation in Excavation Process

借助大型通用有限元软件ABAQUS,以京唐港区32#通用散货泊位为工程实例,根据现场原型观测试验,对代表性断面进行选取、简化,建立相应的二维模型进行数值模拟计算,给出了遮帘式板桩码头开挖过程中变形形式的模拟方法,并将数值模拟结果与现场原型观测实验数据进行了对比。研究结果表明:1在不考虑剩余水头和堆载影响的情况下,数值模拟计算的变形结果与现场原型观测的变形结果比较接近,基本可以反映这种新型结构构件在水平向与竖向的变性特性;2两者对比的结果验证了本文所提出的开挖模拟方法的合理性。

Using the case of 32 # multi-purpose berth in Jing-Tang port area, according to the prototype observation test in situ, the representative sections were selected and simplified, the corresponding two-dimensional model was established and calculated by use of the finite element software ABAQUS. Then a simulative method for the excavating process of covered sheet pile wharf was given. Comparison between the data of prototype observation and finite element simu- lation was carried out. The results show that： （1） If we do not consider the influences of residual head and loading, the numerical results close to those of the experimental prototype observation. This model can basically reflect the deformation characteristics of structure in the horizontal and vertical directions; （2） The comparison results also verify the rationality of the proposed excava- tion simulation method.