Consolidation theory of homogeneous multilayer treatment by air-boosted vacuum preloading

IF 2.2 4区工程技术 Q2 ENGINEERING, CIVIL

European Journal of Environmental and Civil Engineering Pub Date : 2021-04-29 DOI:10.1080/19648189.2021.1915389

Yupeng Shen, Yue Liu, S. Geng, Yongzhao Qi, Shuhai Dong, Xiantao Xin, Jiehao Sun, Huawen Zheng

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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.

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空气增压真空预压均质多层处理的固结理论

摘要空气增压真空预压是一种新的地基处理方法，它由防测井垂直排水管和外部增压系统组成，通过在土壤和垂直排水管之间施加不同的压力来加速土壤的固结。在等应变假设的基础上，简化了空气增压真空预压法的计算模型。结合Newman-Carroll方程，采用分离变量法给出了双层地基固结的解析解。并给出了无井阻力固结和理想井固结的理论解，得到了便于工程实践的图表。结果表明，在工程实践中，井径比的设定不应大于10。目前，空气增压真空预压加固理论不完善，只关注单层地基的加固机理。因此，完善多层空压真空预压加固理论具有重要意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

European Journal of Environmental and Civil Engineering ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL

CiteScore

4.80

自引率

4.80%

发文量

153

审稿时长

6 months

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.