Abstract: This paper raises the problem existing in the selected value of unit weight during the current calculation of the allowable bearing capacity in the shallow foundation subgrade through theoretical analysis. It also raises the suggestion of correcting, which makes the calculation of allowable bearing in the shallow foundation subgrade safer, more reasonable and more economical.

Key words: soil mechanics, allowable bearing of soil, natural unit weight, permeable layer

摘要： 本文提出了当前浅基础地基容许承载力计算中容重取值存在的问题;经理论分析,提出了修改意见,使浅基地基容许承载力的计算更加合理、经济和安全。

关键词: 土力学, 地基允许承载力, 天然容重, 透水层