掉层结构桩基础设计  

Pile foundation designs of structure supported by foundations with different elevations

作　　者：陈昌海 吴胜达 汤启明 庄秋远 CHEN Changhai;WU Shengda;TANG Qiming;ZHUANG Qiuyuan(Chongqing Architectural Design Institute Co.,Ltd.,Chongqing 400015,China;Shenzhen Huaqing Construction Co.,Ltd.,Shenzhen 518100,China)

机构地区：[1]重庆市设计院有限公司,重庆400015 [2]深圳市华庆建筑有限公司,深圳518100

出　　处：《建筑结构》2022年第S02期2068-2074,共7页Building Structure

摘　　要：基础做为上部结构的嵌固部位,不仅要满足竖向承载力的要求,还要具有足够的水平承载力及刚度,确保有效抵抗上部结构传来的水平荷载,约束结构的侧向位移。掉层结构由于基础接地位置不等高的特点,导致其基础在水平荷载作用下受力复杂。采用MIDAS GTS软件建立上部结构、桩基础及地基土协同工作的三维模型进行计算。得到了不同掉层高度、不同掉层范围及不同地质条件时结构桩内力及变形结果。研究不同情况下的结构桩基础内力的变化规律,提出设计建议。可为类似工程的设计提供参考。As the embedded part of the superstructure, the foundation must not only meet the requirements of vertical bearing capacity, but also have sufficient horizontal bearing capacity and stiffness to ensure that it can effectively resist the horizontal load from the upper structure and restrain the lateral displacement of the structure. Due to the characteristics of unequal foundation positions and high connection, the stress of the foundation of the falling floor structure is complex under the action of horizontal load.In this paper, Midas/GTS software is used to establish the three-dimensional model of the superstructure, pile foundation and ground cooperation for calculation.The internal force and deformation results of structural piles are obtained under different layer drop heights, different drop layer ranges and different geological conditions.The variation law of the internal force of the structural pile foundation under different conditions is studied, and design suggestions are put forward.It can provide a reference for the design of similar projects.

关 键 词：桩基础 掉层结构 水平荷载作用 协同分析 

分 类 号：TU473.1[建筑科学—结构工程]