赣南地区花岗岩残积土的工程特性与承载力试验研究

Engineering Properties and Plate Loading Tests on the Granitic Residual Soils in South Jiangxi

花岗岩残积土是一种在我国分布广泛的特殊性土,具有较高的结构强度和较强的结构性联系,大多呈中~低压缩性,具有较大天然含水量、较大孔隙比、较低的压缩模量、较低液性指数等工程特性。花岗岩残积土与常规的黏性土工程特性不同,不可参照常规黏性土方法计算承载力,花岗岩残积土的特殊工程性质是当前工程实践的重点研究课题之一。结合相关工程,对赣南地区花岗岩残积土的工程特性及承载力试验进行研究,用多种方法进行分析对比并得出结论,为该区域的花岗岩残积土基础工程建设和研究提供参考。

The granitic residual soil is one of the special soils that are widely deposited in China.The characteristics of the granitic residual soil are：highly structured and having high strength when its fabric remaining undisturbed;having medium to low compressibility;high moisture content and high void ratio;low compression modulus and low liquid index.The engineering properties of the granitic residual soil are different from those of conventional cohesive soils and the bearing capacity estimation method used in conventional cohesive soils cannot be utilized in the granitic soils.This paper presents the evaluation results of the engineering properties of the granitic soils and the bearing capacity test results.