土工基础

›› 2016, Vol. 30 ›› Issue (1): 87-90.

• 工程实录 • 上一篇    下一篇

主裙楼一体结构地基承载力深度修正的探讨

李 治，陈 松，陈志军   

  1. (中信建筑设计研究总院有限公司，武汉 430014)
  • 收稿日期:2015-12-11 出版日期:2016-02-20 发布日期:2016-03-02
  • 作者简介:李 治（1969-），男，正高职高级工程师，一级注册结构工程师，研究方向为岩土工程及地基基础。

Discussion of DepthModification of Subgrade Bearing Capacity of Main and Attached Building Foundation

LI Zhi， CHEN Song， CHEN Zhijun   

  1. （CITIC General Institute of Architectural Design and Research Co., Ltd., Wuhan 430014, China）
  • Received:2015-12-11 Online:2016-02-20 Published:2016-03-02

摘要： 随着工程建设的大规模发展，高层建筑基础的宽度和深度越来越大，基础的边界条件也越来越复杂。此外，为满足建筑功能的需求，出现了大量主裙楼一体或主楼边存在较近的相邻建筑物结构等情况，在确定地基承载力特征值时如何合理地考虑地面超载对深度修正的影响规范未明确规定。对于各种复杂的地基基础边界条件，其基底以上的相邻超载情况千差万别，基于土体的极限平衡理论，针对地基承载力如何进行深度修正，如何正确合理地判断超载的深度及范围等问题进行了探讨。

关键词: 主裙楼一体, 地基承载力, 深度修正, 地面超载, 承载力特征值

Abstract: With the largescale development of construction, the width and depth of the foundation of highrise buildingsismore and more large,and the boundary conditions of the foundation become more and more complex. Besides,in order to satisfy the requirements of a variety of functional use, there increasingly emerged with manyconditions such as the podium designed as a whole with the main building, or the adjacent buildings approaching so close to the main building edges, when determining the characteristic values of the bearing capacity of the foundation, the specificationdoesn'tdefine how to reasonably consider the influence of the ground overload on the depth correction. For a variety of complex foundational boundary conditions, the adjacent overloading situations above the foundation vary differently, based on the theory of limit equilibrium of soil , this paper discussed how the depth correctionof subgrade bearing capacity is considered and how to judge the depth and range of the overload correctly and reasonably.

Key words: mainand attached building, subgrade bearing capacity, depthmodification, plan surcharge, characteristicvalue of bearing capacity