Modern approach to the methods of soft water-saturated soils improvement. The vacuum consolidation method
EDN: YWRANE
Abstract
With the development of new territories there is a growing need in the soft water-saturated soils improvement. The most common method is preloading of soft soils by surcharge load, when the soil layer has a small thickness, and the combination of surcharge preloading with vertical drains, when the thickness of the soil layer is large. In recent years the method of vacuum consolidation is increasingly used to solve such problems in many countries of the world. It is based on the use of vacuum pressure on the soil. Patented in 1950-s, it has undergone several modifications and technological improvements with the aim of improving efficiency and reducing the cost of the work. In modern construction an analysis of the methodology for using this method, it is possible to distinguish two main systems — membrane and membraneless, each of which has its own specifics. This article discusses the principle of this method and the main directions of its development.
About the Authors
F. F. Zekhniev
NIIOSP named after N. M. Gersevanov JSC Research Center of Construction
Russian Federation
Russian Federation
Farshed ZEKHNIEV, Ph.D. in Engineering, Associate Professor, Corresponding Member of the Academy of Architecture and Construction of Tajikistan, Honorary Builder of the Russian Federation, head of the Laboratory of bases and foundations on the soft soils, NIIOSP named after N. M. Gersevanov JSC Research Center of Construction, Moscow
e-mail: farshedzehni@yandex.ru
D. A. Vnukov
NIIOSP named after N. M. Gersevanov JSC Research Center of Construction
Russian Federation
Russian Federation
Dmitriy VNUKOV, senior researcher, Laboratory of bases and foundations on the soft soils, NIIOSP named after N. M. Gersevanov JSC Research Center of Construction, Moscow
e-mail: lab2@bk.ru
A. V. Sazonova
NIIOSP named after N. M. Gersevanov JSC Research Center of Construction
Russian Federation
Russian Federation
Anna SAZONOVA, engineer, Laboratory of bases and foundations on the soft soils, NIIOSP named after N. M. Gersevanov JSC Research Center of Construction, Moscow
e-mail: lab2@bk.ru
References
1. <i>Зехниев Ф.Ф.</i> Стабилизация оснований с плоскими вертикальными песчаными дренами: дисс. … канд. техн. наук; Всесоюз. н.-и. проектно-изыскат. и конструкторско-технол. ин-т оснований и подземных сооружений им. Н. М. Герсеванова. — М., 1988.
2. <i>Bergado D.T., Saowapakpiboon J., Kovittayanon N., de Zwart T.P.</i> BeauDrain-S PVD vacuum system in soft Bangkok clay: a case study of the Suvarnabhumi airport project. Lowland Technology International 10(1). June 2008.
3. <i>Dam T. K. L., Sandanbata I., Kimura M.</i> Vacuum consolidation method – worldwide practice and the latest Improvement in Japan // Technical Research Report of Hazama Corporation, ISSN: 1880-2370, Vol. 38, 1–14. 2006.
4. <i>Elgamal A.W., Adalier K.</i> Soil stabilization by ambient pore pressure and geomembrane containment / Geosynthetics International. January 1996.
5. <i>Indraratna B.</i> Recent advances in the application of vertical drains and vacuum preloading in soft soil stabilization / Australian Geomechanics Society - EH Davis Memorial Lecture 2009.
6. <i>Griffin H., O’Kelly B.C.</i> Ground improvement by vacuum consolidation — a review // Proceedings of the Institution of Civil Engineers Ground Improvement 167(4):274–290. November 2014.
7. <i>Kjellman W.</i> Consolidation of clay soil by means of atmospheric pressure // Proceeding of Conference on Soil Stabilization, Cambridge, Mass., 258-263. 1952.
8. <i>Rujikiatkamjorn C., Indraratna B.</i> Application of vacuum consolidation for sustainable transport infrastructure / 2nd International Conference on Sustainable Built Environment. pp. 1-12. 2012.
9. <i>Teerachaikulpanich N., Kosaka T.</i> High pressure for vacuum consolidation method using air-water separation system / Ground Improvement Case Histories Embankments with Special Reference to Consolidation and Other Physical Methods, 293–314. 2015.
10. <i>Yee K., Ooi T.A., Ting W.H.</i> Vacuum consolidation technology for soft soils treatment: principles and field experiences / Proceedings of the Malaysian Geotechnical Conference, Kuala Lumpur, Malaysia. 16-18 March 2004.
11. <i>Yu L., Djunaidy M.</i> A vacuum consolidation method application case for improving dredging slurry. URL: http://geotekindo.com.
12. <i>Коновалов П.А., Бреднев А.В., Труфанов А.Н., Финтушал А.Я.</i> Повышение несущей способности свай методом вакуумирования грунта в околосвайном пространстве // Труды ВНИИОСП, вып. № 49, 1990. С. 18-26.
Review
For citations:
Zekhniev F.F., Vnukov D.A., Sazonova A.V. Modern approach to the methods of soft water-saturated soils improvement. The vacuum consolidation method. Bulletin of Science and Research Center of Construction. 2018;17(2):50-61. (In Russ.) EDN: YWRANE
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