（中国建筑科学研究院地基基础研究所， 北京 100013）

［摘要］对目前整体大面积筏板基础设计中实际存在的问题展开论述，主要涉及地基压缩层计算深度、上部结构荷载重分配、上部结构布置原则、筏板基础弯矩的影响因素和计算控制条件。同时指出筏板基础和常规上部结构在极限状态设计过程中的区别和应重点考虑的因素。

［关键词］整体筏板基础； 压缩层深度； 荷载分配； 极限状态

中图分类号：TU470文献标识码：A文章编号：1002-848X(2018)01-0088-05

Discussions on design of integral large-area raft foundation

Liu Penghui

(Institute of Soil and Foundation， China Academy of Building Research， Beijing 100013， China)

Abstract:The practical problems in the design of the integral large-area raft foundation were discussed, mainly including the influencing factors and control conditions of calculated depth for the compressed layer, the load redistribution of superstructure, principle of arrangement of superstructure, and the influence factors and calculation control conditions of bending moment. At the same time, it pointed out the difference between the basic design of the raft foundation and the conventional superstructure in the ultimate state in the process of designing and the factors that should be emphatically considered.

Keywords:integral raft foundation; depth of compressed layer; load distribution;  ultimate state

*北京市自然科学基金项目（8164074），中国建筑科学研究院青年基金项目（20151602331030063）。

作者简介：刘朋辉，博士，高级工程师，Email：liuph1234@126.com。