（中联环建文建筑设计有限公司，  北京  100098）

［摘要］梳理了地基土承载力特征值计算时基础宽度和深度的修正原理，明确了筏板基础也应进行基础宽度修正，基础埋置深度d应按基础周边土顶标高最小的原则取值；且明确了基础埋置深度d的取值与新近回填土的回填时间无关，并分析了基础埋置深度d的取值与施工过程的关系，给出了挖方区与填方区及主裙楼各种情况下的基础埋置深度d的取值原则。

［关键词］地基承载力特征值； 宽度修正； 深度修正

中图分类号：TU470+.3文献标识码：A文章编号：1002-848X(2017)15-0090-03

Analysis and engineering application of width and depth correction principles for characteristic value of foundation bearing capacity

Chen Xiangdong

(United Architects & Engineers Co., Ltd., Beijing 100098， China)

Abstract:The foundation width and depth correction principles in calculating the foundation soil bearing capacity characteristic value were analyzed to make it clear that the width correction is necessary in raft foundation design and that the buried foundation depth d should be determined according to the minimum value of top elevation of the soil around the foundation. And the value of buried foundation depth d has nothing to do with the backfill time of newly backfill soil. The relationship between the buried foundation depth d and the construction process was analyzed. The principle for determining the values of the buried foundation depth d in foundation excavation area, backfill area and the main building area under various conditions were given.

Keywords:characteristic value of foundation bearing capacity; width correction; depth correction

作者简介：陈向东，硕士，工程师，一级注册结构工程师，Email:790123312@qq.com。