地下工程桩基础水平承载力设计研究

Study on Horizontal Bearing Capacity of Pile Foundation in Underground Engineering

地下工程基础埋深对桩基础水平承载力有着重要影响,特别是当水平承载力起控制作用时,应确保基础具有足够的埋置深度。介绍了轨道交通车辆段停车场带上盖建筑开发项目桩基础水平承载力的设计方法;对基桩水平承载力的影响因素进行参数化分析,得出桩顶约束情况是最主要的影响因素;分析了高承台桩基与低承台桩基在水平荷载下整体桩基础承载力、基桩内力与变形的状况。

The foundation depth of underground engineering has a far-reaching impact on the horizontal bearing capacity of pile foundation. When the horizontal bearing capacity plays a controlling role, it is necessary to ensure that the foundation has enough depth. The paper introduces the calculation method of horizontal bearing capacity of pile foundation of business development project above the rail transit depot. The parametric analysis is made on the factors influencing the horizontal bearing capacity of pile foundation and comes up to the conclusion that the pile head constraint condition is the major factor. The pile foundation's bearing capacity, internal force and deformation under horizontal loading are analyzed for pile foundations with high and low bearing platforms.