特殊土改良方法及原理研究综述  

Review on improvement methods and principles of special soil

作　　者：周世杰 张锐[1,2] 肖宇鹏 李邦武 曾重驰 ZHOU Shijie;ZHANG Rui;XIAO Yupeng;LI Bangwu;ZENG Chongchi(School of Traffic&Transport Engineering,Changsha University of Science&Technology,Changsha 410114,China;National Engineering Laboratory of Highway Maintenance Technology,Changsha University of Science&Technology,Changsha 410114,China;Hainan Transportation Engineering Construction Bureau,Haikou 570208,China;International Engineering college,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学交通运输工程学院,湖南长沙410114 [2]长沙理工大学公路养护技术国家工程实验室,湖南长沙410114 [3]海南省交通工程建设局,海南海口570208 [4]长沙理工大学国际工学院,湖南长沙410114

出　　处：《长沙理工大学学报（自然科学版）》2024年第3期21-34,共14页Journal of Changsha University of Science and Technology:Natural Science

基　　金：国家自然科学基金资助项目(51978085、52278432);国家大学生创新创业训练计划(202010536006)。

摘　　要：土质改良是特殊土路基工程中常见的手段。为推动特殊土路基的发展,对目前主要的改良方法进行回顾和介绍。基于目前土质改良方法的基本原理,可分为物理改良和化学改良两类;分析了各种改良方法的优缺点及其适用地区,并从微观结合水角度对特殊土改良的调控机理进行了讨论与展望。虑经济性和环保性,物理和化学改良均须因地制宜,可研究多种材料共同作用的改良方法,从而弥补使用单一材料改良存在的不足。揭示了影响土体强度等特性的内在机理,发现物理和化学改良均会对土中结合水产生显著影响,结合水的变化可能是影响土体强度的主要原因。在未来的工程建设中,可对大部分固体废弃物加以利用,实现变废为宝的目标。本文可以为不同类型的特殊土路基处理提供基础知识和实践方法,同时也可为特殊土用作路基填料提供决策建议和依据。Soil improvement is a common means in special soil subgrade engineering.In this paper,the main improvement methods were reviewed to promote the development of special soil subgrades.Based on their basic principles,the current soil improvement methods can be divided into two categories:physical improvement and chemical improvement.The advantages and disadvantages of various improvement methods and their applicable areas were analyzed,and the regulation mechanism of special soil improvement was discussed and prospected from the perspective of microscopic bound water.To meet economical and environmental needs,both physical and chemical improvements should consider the local conditions,and the improvement method integrating functions of multiple materials should be investigated to make up for the insufficiency of improvement methods using a single material.The internal mechanism affecting soil strength and other characteristics is revealed,and it is found that physical and chemical improvements can significantly affect the bound water in soil,and the change in bound water may be the main factor affecting soil strength.In the construction of future projects,most of the solid waste can be reused to make things of value.This review can provide basic knowledge and practical methods for different types of special soil subgrades,as well as a decision reference and basis for using special soil as subgrade filling.

关 键 词：道路工程 特殊土路基 土质改良 改良机理 结合水 

分 类 号：U416[交通运输工程—道路与铁道工程]