膨胀土地基改良方法研究进展  

Research Progress on Improvement Methods of Expansive Soil Foundation

作　　者：鲍捷 申春妮[2] 方祥位 雷宇龙 BAO Jie;SHEN Chunni;FANG Xiangwei;LEI Yulong(Department of Military Installations,Army Logistic University of PLA,Chongqing 401331,China;School of Civil Engineering and Architecture,Chongqing University of Science and Technology,Chongqing 401331,China;School of Civil Engineering,Chongqing University,Chongqing 400045,China)

机构地区：[1]陆军勤务学院军事设施系,重庆401311 [2]重庆科技学院建筑工程学院,重庆401331 [3]重庆大学土木工程学院,重庆400045

出　　处：《粉煤灰综合利用》2019年第5期98-104,共7页Fly Ash Comprehensive Utilization

基　　金：国家自然科学基金(51479208,11272354);全军后勤科研项目(CY114C022)

摘　　要：膨胀土是一种在天然地质过程中形成的特殊黏土,具有显著胀缩性和多裂隙性,遇水膨胀、失水收缩且反复变形,对建筑物造成严重的破坏。为了满足膨胀土地区的工程建设需要,需利用人工改良的方法进行地基处理。本文针对膨胀土的特性,对膨胀土改良技术进行了比较系统的分析总结,介绍了物理改良法、化学改良法和生物改良法的种类、改良机理和优缺点等。从强化改良方法的机理揭示、重视改良膨胀土的工程性质研究、开发新的改良方法和加强工程应用研究等四个方面对膨胀土地基改良进行了展望,为今后膨胀土的研究工作提供了参考意见。Expansive soil is a kind of special clay formed in natural geological process.It has obvious expansion and contraction and multi-fracture.It explodes in water,shrinks in water and repeatedly deforms,causing serious damage to buildings.In order to meet the needs of engineering construction in expansive soil areas,it is necessary to use artificial improvement methods for ground treatment.In this paper,the research on the improvement technology of expansive soil foundation is systematically analyzed and summarized.The types of improvement mechanisms,advantages and disadvantages of physical improvement method,chemical improvement method and biological improvement method are introduced and analyzed.The improvement method of the expansive soil foundation is prospected from the mechanism of strengthening the improvement method,the research on the engineering properties of the improved expansive soil,the development of new improvement methods and the enhancement of engineering application research.Some suggestions are provided for the future research of expansive soil.

关 键 词：膨胀土 改良 物理方法 化学方法 生物方法 

分 类 号：TU43[建筑科学—岩土工程]