宋相道  李华亭　（青岛市建筑设计研究院　266003）

[提要]  刚性基础设计必须满足台阶宽高比（刚性角）的限制。《建筑地基基础设计规范》( GB50007-2002) 对刚性基础台阶宽高比允许值作了规定，但其范围较小。经计算发现，有些情况下满足规范宽高比的规定，基础的抗弯或抗剪承载力仍不能满足要求。按抗弯、抗剪承载力要求，补充计算了一些常用的不同地基净反力、不同材料的台阶宽高比（刚性角），供设计参考。
[关键词]  宽高比  刚性基础  刚性角  净反力

The rigid foundation design must satisfy the limitation of the width- height ratio of steps.  The design code for civil engineering foundations has prescribed the allowable value for the ratio, but the range is small. It has been found by means of calculating that in some case the ratio satisfies the demand of the design code, but bending resistance or shearing resistance of the foundations can't meet the demand. According to the demand of bending resistance and shearing resistance, the calculation of the net reaction of the foundations and the width-height ratio of the stepped foundations with different material in common conclition are provided as a reference for design.
Keywords:  width-height ratio; rigid foundation; rigid angle; net reaction

    参  考  文  献
1．混凝土结构设汁规范(GB50010-2002)．
2．建筑地基基础设计规范( GB50007-2002)．
3．砌体结构设计规范( (GB50003-2002)．
4．混凝土结构设计规范（GBJ10-89）．
5．建筑地基基础设计规范( GBJ7-89)
6．砌体结构设计规范( GBJ3-88)
7．工业与民用建筑地基基础设计规范( TJ7-74)．