Fernando Fante, Maria Mariana de Sousa Rocha, E. Moreira, P. Prietto, F. D. Rosa, Luizmar da Silva Lopes Júnior, F. Almeida, N. Consoli
{"title":"Behaviour of a Weakly Bonded Residual Soil Subjected to Monotonic and Cyclic Loading","authors":"Fernando Fante, Maria Mariana de Sousa Rocha, E. Moreira, P. Prietto, F. D. Rosa, Luizmar da Silva Lopes Júnior, F. Almeida, N. Consoli","doi":"10.1680/jgeen.21.00143","DOIUrl":null,"url":null,"abstract":"Residual soils are found all around the world. Their behaviour is different from \"classic\" soils due to the structure resulting from the geological formation processes, which can eventually undergo degradation under static and cyclic loads, with a decrease in both stiffness and strength. In this context, this study aimed to evaluate the behaviour of weakly bonded residual soil in the face of loading and unloading cycles using field plate load tests. Preliminary field and laboratory tests were carried out to characterize the residual soil at the experimental site. The monotonic and cyclic plate load tests - with circular and square plates – were performed under three different load amplitudes. The results showed no shape effect of the loaded area for both monotonic and cyclic loading, considering the same loading pattern. Also, there is a threshold load, which indicates a yielding point and a change in soil behaviour and can be estimated from simple laboratory tests. Below this load, the residual soil presented a rigid behaviour even when subjected to cyclic loads.","PeriodicalId":54572,"journal":{"name":"Proceedings of the Institution of Civil Engineers-Geotechnical Engineering","volume":"371 1","pages":""},"PeriodicalIF":2.0000,"publicationDate":"2022-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the Institution of Civil Engineers-Geotechnical Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jgeen.21.00143","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Residual soils are found all around the world. Their behaviour is different from "classic" soils due to the structure resulting from the geological formation processes, which can eventually undergo degradation under static and cyclic loads, with a decrease in both stiffness and strength. In this context, this study aimed to evaluate the behaviour of weakly bonded residual soil in the face of loading and unloading cycles using field plate load tests. Preliminary field and laboratory tests were carried out to characterize the residual soil at the experimental site. The monotonic and cyclic plate load tests - with circular and square plates – were performed under three different load amplitudes. The results showed no shape effect of the loaded area for both monotonic and cyclic loading, considering the same loading pattern. Also, there is a threshold load, which indicates a yielding point and a change in soil behaviour and can be estimated from simple laboratory tests. Below this load, the residual soil presented a rigid behaviour even when subjected to cyclic loads.
期刊介绍:
Geotechnical Engineering provides a forum for the publication of high quality, topical and relevant technical papers covering all aspects of geotechnical research, design, construction and performance. The journal aims to be of interest to those civil, structural or geotechnical engineering practitioners wishing to develop a greater understanding of the influence of geotechnics on the built environment.