动探与标贯试验在地基液化检测中的相关性研究

摘要

Sandy soil liquefaction is one of cause for the destabilization of foundation soil. Based on sandy soil liquefaction principle, the methods for treating sandy soil liquefaction in China and abroad, and the mechanism of reinforcing foundation with vibro–replacement stone piles, one project located in Caofeidian area has been taken as an example to analyze the correlation between the density degrees of crushed stone piles and that of soil around piles. In addition, cone dynamic sounding test and standard penetration test have been used to summarize the effective methods for distinguish sandy soil liquefaction of similar field, the above two tests are often applied in stone pile composite foundation detection.%砂土液化是地基土失稳的诱因之一,本文分析砂土液化原理,目前国内外处理砂土液化的方法,振冲碎石桩加固地基机理,结合曹妃甸某工程分析碎石桩的密实度与桩间土的密实度之间的相关性,应用碎石桩复合地基检测中常使用的圆锥动力触探试验和标准贯入试验,总结得出其判别该类场地砂土液化的有效方法.