倾斜荷载作用下无粘性土查表法验算地基承载力折减系数的确定

The Determination of Reduction Coefficient of Foundation Bearing Capacity by Looking up Table

文章对极限平衡理论公式、《建筑地基基础设计规范》(GBJ7- 89)承载力计算公式以及港工《地基》(JTJ2 5 0 -98)的查表法验算地基承载力计算公式 ,进行了推导、分析、比较 ,得出了倾斜荷载作用下无粘性土地基承载力设计值[f′d](基础宽度≤ 3m,基础埋深 0 .5～ 1.5 m)的折减系数及其深宽修正系数的折减系数。使得地基承载力计算更为合理。

The Derivation ,analysis and comparison for the formula of limit equilibrium theory in the “Code of Foundation Design of Buiding”(GBJ7-89),the calculation formula of bearing capacity and the method of looking up table of port engineering in “Foundation”(JTJ219-87)which is used to check the calculation formula of foundation bearing capacity are made and reduction coefficient of the design value [f′ d] (foundation width≤3 m,the buried depth of foundation 0.5～1.5 m)of cohesionless soil foundtion bearing capacity under the action of inclined load,the reduction coefficient of depth and width correction coeficient are obtained.That makes the calculation of foundation beraring capacity more reasonable,simple and convenient.