某临海港口项目桩基工程优化设计

Optimization Design of Pile Foundation Engineering of a Coastal Port Project

填海陆域内建筑物的桩基既要提供上部结构所需的抗压承载力,又要提供海水水位上升时的抗拔承载力以抵消海水上浮力。因此需对其桩基工程受力情况进行计算分析和优化布局,以使桩基和上部结构的抗力及海水上浮力相协调。以深圳蛇口邮轮中心桩基工程为研究背景,以调整柱下桩基布置方向、调整基础边缘桩基桩位及考虑上部结构布置等方式对填海陆域内建筑物的桩基工程进行优化设计,并通过MIDAS/GTS有限元软件进行模拟分析,验证了桩基工程优化设计方案的合理性。

The pile foundation of the buildings in the reclaimed land area should not only provide the compressive bearing capacity required by the superstructure,but also provide the uplift bearing capacity to mitigate the buoyancy induced from the seawater when the sea water level rises.Therefore,it is necessary to predict,analyze and optimize the layout of the piles in the foundation project,to coordinate the resistance of the pile foundation,the superstructure and the buoyancy from the anticipated sea level.A pile foundation project in Shenzhen Shekou cruise wharf center is presented as the case history.The pile foundation for the buildings in the reclaimed land area is optimized by adjusting the layout direction of the piles under the column,by adjusting the pile position at the edge of the foundation,also by considering the layout of the superstructure.The simulation analysis is performed by using the MIDAS/GTS finite element software to verify the rationality of the optimization design scheme of the pile foundation project.