Seasonal influence on cone penetration test: An unsaturated soil site example

作     者：Heraldo Luiz Giacheti Renan Cravera Bezerra Breno Padovezi Rocha Roger Augusto Rodrigues 

作者机构：Department of Civil and Environmental EngineeringSao Paulo State UniversityBauruBrazil Department of Geotechnical EngineeringUniversity of Sao PauloSao CarlosBrazil 

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：2019年第11卷第2期

页      面：361-368页

核心收录：

学科分类：08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：the S?o Paulo Research Foundation (FAPESP) (Grant Nos. 2010/50680-3, 2011/09031-0, 2014/23767-8 and 2015/ 17260-0) the National Council for Scientific and Technological Development (CNPq) (Grant Nos. 310867/2012-6 and 446424/ 2014-5) for supporting their research 

主　　题：Site investigation In situ testing Cone penetration test (CPT) Unsaturated soil Suction Variability 

摘      要：Interpretation of electric cone penetration test(CPT) based pore water pressure measurement(CPTu) is well established for soils with behavior that follows classical soil mechanics. The literature on the interpretation of these tests performed on unsaturated tropical soils is limited, and little is known about the influence of soil suction on in situ test data. In this context, the CPT data are presented and discussed to illustrate the seasonal variability in an unsaturated tropical soil site. The test data show that soil suction significantly influenced CPT data up to a depth of 4 m at the study site. It shows the importance of considering seasonal variability in unsaturated soil sites caused by soil suction, which was related to water content through a soil-water retention curve(SWRC). It is also important to consider this aspect in the interpretation of CPT data from these soils.