在我国南方,尤其是广西地区,红黏土分布广泛.红黏土作为一种具有特殊性质的土,其占地面积接近国土总面积的1/3.随着基础设施建设的推进,对红黏土加固的需求也越来越大.由于红黏土液限、塑限高,遇强降雨等不利天气易发生软化,少雨干燥时易发生收缩等特性,因此被视为不良的地基土.为探究干湿循环下红黏土地基的改良技术,对红黏土成因的研究现状、不良特性、干湿循环对红黏土地基的影响以及红黏土地基的改良技术等进行分析,为后续红黏土地基的改良技术发展提供参考.
In southern China,especially in Guangxi region,red clay is widely distributed.As a soil with special properties,its land area is close to one-third of the total land area.With the advancement of infrastructure construction,the demand for red clay reinforcement is also increasing.Due to its high liquid and plastic limits,red clay is prone to softening in adverse weather conditions such as heavy rainfall,and is prone to shrinkage when dry in low rainfall,making it considered a poor foundation soil.In order to explore the improvement technology of red clay foundation under dry wet cycles,the current research status,adverse characteristics,impact of dry wet cycles on red clay foundation,and improvement technology of red clay foundation are analyzed,providing reference for the subsequent development of improvement technology of red clay foundation.