【作者】 廖化荣； 汤连生；

【Author】 Liao Huarong

【机构】 中山大学地球科学系；

【摘要】 本文对目前常用的地基土承载力的确定方法进行了综合评价,这些方法分别是:按规范确定地基土承载力设计值;按原位静力触探试验（CPT）数据确定地基土承载力;按原位标准贯入试验（SPT）数据确定地基土承载力;临界荷载p_1/4;极限荷载p_u;按原位静载荷试验p-S曲线确定地基土的极限承载力p_u。首先对这5种常用的地基土承载力确定方法分别计算地基土承载力值,求出按各种方法确定的地基土的承载力的平均值及标准差,再用本文提出的评价因子M对每种方法确定的承载力值进行分析对比,把地基土承载力的评价定量化,进而对地基土承载力的确定方法进行对比分析和综合评价,由此本文指出了目前国内地基土承载力确定方法所存在的问题,并提出了改进建议。更多还原

【Abstract】 This paper evaluates synthetically the calculating methods of bearing capacity of foundation soil.Those methods are usually used in geotechnical engineering field.The methods including as follows: calculating the bearing capacity of soil by means of Code For Design of Building Foundation;calculating the bearing capacity of soil in virtue of CPT data;calculating the bearing capacity of soil with the help of SPT data;calculating the critical bearing capacity of soil(P_1/4);calculating the ultimate bearing capacity of soil（Pu）;calculating the bearing capacity of soil by P-S curve of plate loading test.The paper calculates the bearing capacity of soil by means of all kinds of calculating methods first.Basing on the calculating results,the paper contrasts with,analyzes and evaluates synthetically all kinds of calculating methods with the help of evaluation factor（M）.The evaluation factor evaluates the calculating methods of bearing capacity of soil quantificationally.Then the paper points out the problem and lack existing in the calculating methods of bearing capacity of soil and brings forward the advanced advice.更多还原