{"title":"Consolidation theory of homogeneous multilayer treatment by air-boosted vacuum preloading","authors":"Yupeng Shen, Yue Liu, S. Geng, Yongzhao Qi, Shuhai Dong, Xiantao Xin, Jiehao Sun, Huawen Zheng","doi":"10.1080/19648189.2021.1915389","DOIUrl":null,"url":null,"abstract":"Abstract Air-boosted vacuum preloading, composed of anticlogging vertical drains and an outer booster system, is a new foundation treatment method that is beneficial to accelerating soil consolidation by applying different pressures between soil and vertical drains. Based on the assumption of equal strain, the present paper has simplified the calculation model of the air-boosted vacuum preloading method. Combined with the Newman-Carroll equation, the analytical solution for the consolidation of the double-layer soil foundation is proposed using separation of variables. Moreover, the theoretical solutions of consolidation without well resistance and ideal wells were given, and a chart convenient for engineering practice was acquired. Results show that the setting of well diameter ratio should not be more than 10 in engineering practice. At present, the consolidation theory of air-boosted vacuum preloading is imperfect and only focuses on the reinforcement mechanism of single-layer foundation. Therefore, it is of great significance to perfect the consolidation theory of air-boosted vacuum preloading with multiple layers.","PeriodicalId":11970,"journal":{"name":"European Journal of Environmental and Civil Engineering","volume":"26 1","pages":"5634 - 5652"},"PeriodicalIF":2.2000,"publicationDate":"2021-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/19648189.2021.1915389","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"European Journal of Environmental and Civil Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/19648189.2021.1915389","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 4
Abstract
Abstract Air-boosted vacuum preloading, composed of anticlogging vertical drains and an outer booster system, is a new foundation treatment method that is beneficial to accelerating soil consolidation by applying different pressures between soil and vertical drains. Based on the assumption of equal strain, the present paper has simplified the calculation model of the air-boosted vacuum preloading method. Combined with the Newman-Carroll equation, the analytical solution for the consolidation of the double-layer soil foundation is proposed using separation of variables. Moreover, the theoretical solutions of consolidation without well resistance and ideal wells were given, and a chart convenient for engineering practice was acquired. Results show that the setting of well diameter ratio should not be more than 10 in engineering practice. At present, the consolidation theory of air-boosted vacuum preloading is imperfect and only focuses on the reinforcement mechanism of single-layer foundation. Therefore, it is of great significance to perfect the consolidation theory of air-boosted vacuum preloading with multiple layers.
期刊介绍:
The European Research Area has now become a reality. The prime objective of the EJECE is to fully document advances in International scientific and technical research in the fields of sustainable construction and soil engineering. In particular regard to the latter, the environmental preservation of natural media (soils and rocks) and the mitigation of soil-related risks are now not only major societal challenges, but they are also the source of scientific and technical developments that could be extremely beneficial.