Review of collapse triggering mechanism of collapsible soils due towetting

作     者：Ping Li Sai Vanapalli Tonglu Li 

作者机构：Department of Civil EngineeringUniversity of OttawaOttawaONK1N6N5Canada School of Geological Engineering and GeomaticsChang’an UniversityXi’anShaanxi710054China 

出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)

年 卷 期：2016年第8卷第2期

页      面：256-274页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 

基　　金：the Chinese Scholarship Council,which funded her Joint Ph D research program the support from Natural Sciences and Engineering Research Council of Canada(NSERC)for his research programs the Chinese Ministry of Science and Technology for supporting his research program(grant No.2014CB744701) 

主　　题：Collapse mechanism Microstructure Constitutive relationships Compacted soils Natural loess soils Elastoplastic models Yield surface Structural strength 

摘      要：Loess soil deposits are widely distributed in arid and semi-arid regions and constitute about 10% of land area of the *** soils typically have a loose honeycomb-type meta-stable structure that is susceptible to a large reduction in total volume or collapse upon *** characteristics contribute to various problems to infrastructures that are constructed on loess *** this reason,collapse triggering mechanism for loess soils has been of significant interest for researchers and practitioners all over the *** paper aims at providing a state-of-the-art review on collapse mechanism with special reference to loess soil *** collapse mechanism studies are summarized under three different categories,*** approaches,microstructure approach,and soil mechanics-based *** traditional and microstructure approaches for interpreting the collapse behavior are comprehensively summarized and critically reviewed based on the experimental results from the *** soil mechanics-based approaches proposed based on the experimental results of both compacted soils and natural loess soils are reviewed highlighting their strengths and limitations for estimating the collapse *** soil mechanics-based approaches with less parameters or parameters that are easy-to-determine from conventional tests are suggested for future research to better understand the collapse behavior of natural loess *** studies would be more valuable for use in conventional geotechnical engineering practice applications.