MODELING VIBRATORY COMPACTION OF SOILS AS A FUNCTION OF DISCRETE SETTLEMENT CHANGE
The research results of dynamic analysis and its effect on natural or backfilling soil, for construction foundations have been obtained due to the optimization of achieving the value 98% for the degree of compaction. Basically, for the construction of national roads and highways in Romania, there have been carried out tests for the correlation of vibratory roller performances with dynamic loading of 150 and 250 kN, excitation frequencies of 25 and 50 Hz. The period of research was 2008-2021 and the focus was that of optimal correlating the dynamic parameters to the technological requirements for soils compaction, in order to achieve a minimum value of 98% for the degree of compaction. For soil compaction there is used trailed or self-propelled vibratory equipment. The mass M of vibratory roller is within the interval (3000 ... 5000) kg and the initial excitation forces are of amplitude (2 ... 5) G, where G is correlated to the mass values (G = 9.81M).
This paper also analysis the variation curves for the amplitude of forced vibrations depending on the excitation pulsation, the force acting on the shaft of eccentric rotating masses and generating the dynamic force. The experimental results were determined „in situ”.
Adam, D., Kopf, F., Theoretical analysis of dynamically loaded soils, European Workshop: Compaction of soils and granular materials, ETC11 of ISSMGE, Paris, France, 2000;
D. Adam and F. Kopf, Operational Devices for Compaction Optimization and Quality Control (Continuous Compaction Control & Light Falling Weight Device), Proceedings of the International Seminar on Geotechnics and Railway Design and Construction, Athens, Greece, 16 - 17 December 2004, 97-106. IOS Press.
Bratu, P., Dynamic analysis in case of compaction vibrating rollers intended for road works, The 17th International Congress on Sound&Vibration, ICSV, Cairo, 18-22 July, 2010;
Bratu, P., Debeleac, C., The analysis of vibratory roller motion, Proceedings of the VII International Triennial Conference Heavy Machinery – HM 2011, Session Earth-moving and transportation machinery, Vrnjačka Banja, Serbia, 29 June -2 July, pp.23-26, ISBN 978-86-82631-58-3, 2011;
Bratu, P., Vibrațiile sistemelor elastice, Ed. Tehnică, Bucharest, 2000;
Leopa, A., Debeleac, C., Năstac, S., Simulation of Vibration Effects on Ground Produced by Technological Equipments, 12th International Multidisciplinary Scientific GeoConference SGEM2012, Conference Proceedings, Vol. 5, pp. 743-750, ISSN 1314-2704, 2012;
Leopa, A., Năstac, S., Debeleac, C., Căpăţână, G.F., Potirniche, A., Identification of parameters characterizing the nonlinear behavior of viscouselastic systems on dynamic loadings, The 8th International DAAAM Baltic Conference "Industrial Engineering “, April 19-21, Tallinn, Estonia, 2012;
Li, Y.; She, C.X. Discrete Simulation of Vibratory Roller Compaction of Field Rockfills. Shock and Vib. 2021, 2021, 9246947. [Google Scholar] [CrossRef]
Bejan, Sergiu & Pérez-Acebo, Heriberto. (2016). Modeling the Dynamic Interaction between a Vibratory-Compactor and Ground. Romanian Journal of Acoustics and Vibrations. 12.
Li, Shiping & Hu, Chunhua. (2018). Study on Dynamic Model of Vibratory Roller - Soil System. IOP Conference Series: Earth and Environmental Science. 113
Mooney, M.A., Rinehart, R.V. Field Monitoring of Roller Vibration During Compaction of Subgrade Soil, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 133, No. 3, pp.257–265, 2007;
Mooney, M.A., Rinehart, R.V., In-Situ Soil Response to Vibratory Loading and Its Relationship to Roller-Measured Soil Stiffness, Journal of Geotechnical and Geoenvironmental Engineering, ASCE, Vol. 135, No. 8, pp. 1022–1031, 2009;
Vera Breskich (2023), Experimental studies on soil compaction using BOMAG BW 226 BVC-5 vibratory roller , International Scientific and Practical Conference “Environmental Risks and Safety in Mechanical Engineering” (ERSME-2023), Volume 376, https://doi.org/10.1051/e3sconf/202337603028,
Tyuremnov, Ivan & Krayushkin, Arseniy & Shorokhov, D. (2023). Experimental studies on compaction of soil with HAMM 3411 vibrating roller. The Russian Automobile and Highway Industry Journal. 19. 828-840.
Morariu – Gligor R., Study of the influence of plate compactor weight on its functioning, ACTA TEHNICA NAPOCENSIS, Serie: Applied Mathematics, Mechanics and Engineering, Vol. 57, Issue II, June, 2014;
Morariu – Gligor R., Factors influencing the degree of soil compaction, ACTA TEHNICA NAPOCENSIS, Serie: Applied Mathematics, Mechanics and Engineering, Vol. 60, Issue I, March, 2017;
Tyuremnov, Ivan & Morev, Artem & Furmanov, Denis. (2019). On the justification of the value of the apparent mass of soil in rheological modeling of the process of soil compaction by a vibrating roller. Journal of Physics: Conference Series. 1260. 112033.
Dobrescu, C.F. Analysis of the dynamic regime of forced vibrations in the dynamic compacting process with vibrating roller. Acta Tech. Napoc. Appl. Math. Mech. Eng. 2019, 62
Dobrescu, Cornelia. (2020). The Dynamic Response of the Vibrating Compactor Roller, Depending on the Viscoelastic Properties of the Soil. Applied System Innovation. 3(2):25.
Dobrescu, C.F. Highlighting the Change of the Dynamic Response to Discrete Variation of Soil Stiffness in the Process of Dynamic Compaction with Roller Compactors Based on Linear Rheological Modeling. In Applied Mechanics and Materials; Herisanu, N., Marinca, V., Eds.; Volume 801: Acoustics & Vibration of Mechanical Structures II; Scientific Net: Zurich, Switzerland, 2015; pp. 242–248, ISBN 978-3-03835-628-8. [CrossRef]
Test Report for Laboratory and “In Situ” Tests. Transylvania Highway, Bechtel Romania; ICECON: Bucharest, Romania, 2008.
Test Report for Laboratory and “In Situ” Tests Performed on the Road Layers of the Bucures¸ti-Constant, a Highway; ICECON: Bucharest, Romania, 2004.
Wersäll, C.; Larsson, S.; Bodare, A. Dynamic Response of Vertically Oscillating Foundation at Large Strain. In Proceedings of the 14th International Conference of the International Association for Computer Methods and Advances in Geomechanics, Kyoto, Japan, 22–25 September 2014; pp. 643–647.
Wersäll, C.; Larsson, S.; Ryden, N.; Nordfeld, I. Frequency Variable Surface Compaction of Sand Using Rotating Mass Oscillators. Geotec. Test. J. 2015, 38, 1–10. [CrossRef]
Polidor BRATU, Marilena Cristina NITU, Oana TONCIU, Effect of Vibration Transmission in the Case of the Vibratory Roller Compactor, Romanian Journal of Acoustics and Vibration: Vol. 20 No. 1 (2023): Romanian Journal of Acoustics and Vibration
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