复合地基载荷试验的新方法——修正快压法

A New Method of Loading Test for Composite Foundation——Correction Rapid-loading Test

修正快压法是复合地基载荷试验的新方法。该方法的试验要点是:每级荷载均要求加压1h,并测读其相应的沉降量;当加压至设计荷载时,尚应压至规范规定的相对稳定标准;以后各级荷载仍加压1h,直至破坏或规范规定的卸荷标准。论文详细分析了该方法的理论依据,并与常规慢压法载荷试验进行了对比,分析了工程应用的效果。分析结果表明,修正快压法应用于复合地基载荷试验不但可以提高工效而且偏于安全,值得工程中推广应用。

The correction rapid-loading test is a new method of loading test for composite foundation. The main test steps are as follows： the each grading load is maintained for one hour, at the same time the relevant settlement is recorded; when the design load is applied, the steady standard of the settlement specified in codes must be achieved; and the succedent each grading load is still maintained for one hour up to the ＇foundation failure or the unloading standard. The theoretical basis of the loading test is analyzed in the paper.＇The correction rapid-loading test is compared with the slow-loading test according to the field loading test results, and the application effect of correction rapid-loading test in the actual engineering is explained. The analysis results show that the correction rapid-loading test is efficient and safe, and it is worth to be used in the loading test of composite foundation.