人工吹填土液化判别及地基处理方法分析

The Analysis of Liquefaction Discrimination and Foundation Treatment for Manual Dredger Fill

摘要: 为了有效利用沿海土地资源，我国广大沿海地区开展了吹填造陆。由此产生的人工吹填土作为建设工程地基的一部分，其性质也是近年来工程研究热点之一。本文分析了影响人工吹填土工程性质的四方面因素，对比分析了我国现行规范中采用标准贯入试验锤击数和静力触探测试数据的液化判别方法间的区别和适用性，得到了人工吹填土场地主要液化土层和大面积地基处理的分析方法。本文还根据曹妃甸滦南工业园地区工程实例中相关勘察、测试和地基处理数据计算得到的液化判别结果，分析了不同地基土体的液化性质，提供了针对人工吹填土地基处理的建议。

Abstract: In order to effectively utilize coastal land resources, landfilling and land-laying techniques have been widely applied in coastal areas. As part of the foundation of a construction project, the resulting artificial dredger fill becomes one of the hot spots of engineering research topics in recent years. This paper analyzes the four factors that affect engineering properties of the artificial dredger fill, and compares the difference and applicability between SPT and CPT methodologies that currently used to determine soil liquefiability. The method of dealing with liquefiable soil layers and foundation treatment in artificial dredger fill site is provided. This paper also analyzes the liquefaction properties of different foundation soils based on liquefiability results from soil investigation and test results, as well as the foundation treatment data in the project of Caofeidian Industrial Park area. Recommendations for the treatment of artificial dredger fill are provided in this paper.