Evaluation of Effectiveness of Application of Horizontal Inertial Barriers to Reduce Vibrations Propagating in Ground Environment
https://doi.org/10.21122/2227-1031-2023-22-4-286-293
Abstract
The paper presents calculations of vibrations of the soil mass when a horizontal inertial barrier in the form of a rectangular concrete slab buried in the ground is placed on the propagation path of vibrations. The damping effect of a surface wave upon its contact with an inertial plate is associated with its reflection, refraction and partial absorption. Theoretical studies have been carried out using the finite element method. The ground medium has been considered as an elastic inertial array bounded by non-reflecting boundaries. Various variants of the geometry of the inertial plate and its spatial arrangement on the surface of the soil medium between the vibration source and the considered point behind the barrier are modeled. The effectiveness of each variant of vibration isolation has been quantified by the value showing how many times the speed of vertical oscillations of the ground behind the barrier decreases compared to the free propagation of surface waves. It is shown that an intensive decrease in vertical displacements occurs starting from the side face of the inertial plate. Here, the amplitude of vertical oscillations decreases by 9,8 times for a concrete slab 15 m long, and by 4,2 times for a 3-meter slab. At a distance of 22 m from the point of application of the dynamic load, the amplitudes decrease by factors of 5.48 and 2.95, respectively, for slabs of 15 and 3 m width. This method of reducing vibro-dynamic effects has a simple design and can be used in cramped conditions of urban development to protect existing and planned buildings and structures.
About the Author
K. E. Povkolas
Belarusian National Technical University
Belarus
Belarus
Address for correspondence:
Povkolas Konstantin Е.–
Belаrusian National Technical University,
65/1, Nezavisimosty Ave.,
220013, Minsk, Republic of Belarus.
Tel.: +375 17 292-76-77
K_Povkolas@mail.ru
References
1. Kudryavtsev I. A. (1999) Effect of Vibration on Ground Beds and Structures. Gomel, Belarusian State University of Transport. 247 p. (in Russian).
2. Povkolas K. E. (2018) Development of Ways to Improve Operational Reliability and Durability of Building Structures and Facilities During Reconstruction and Modernization of Production, Accompanied by Intense Vibrodynamic Effects: Research Report (Conclusion) No GR 20160898. Minsk, Belarusian National Technical University. 82 (in Russian).
3. TKP [Technical Code of Common Practice] 45-1.04-119–2008. Buildings and Construction. Assessment of the Degree of Physical Wear. Minsk, Stroyizdat Publ., 2009. 136 (in Russian).
4. Mangushev R. A., Gursky A. V., Polunin V. M. (2020) Evaluation of the Dynamic Impact From Vibration Driving of Sheet piles on the Buildings of Context Area in Conditions of Weak Water-Saturated Soils. Construction and Geotechnics, 11 (3), 102–116. https://doi.org/10.15593/2224-9826/2020.3.09 (in Russian).
5. Kalyuzhnyuk М. М., Rud V. K. (1989) Piling Works During Reconstruction (Effect of Vibrations on Buildings and Structures). Leningrad, Stroyizdat Publ. 160 (in Russian).
6. TKP [Technical Code of Common Practice] 45-5.01-264–2012. Bases and Foundations of Buildings and Structures. Foundations under Vibrodynamic Effects. Design Rules. Minsk, Stroytekhnorm Publ., 2012. 43 (in Russian).
7. Kuznetsov S. V., Nafasov A. E. (2010) Horizontal Seismic Barriers for Protection Against Seismic Waves. Vestnik MGSU, (4), 131–134 (in Russian).
8. Chadwick P., Smith G. D. (1977) Foundations of the Theory of Surface Waves in Anisotropic Elastic Materials. Advances in Applied Mechanics, 17, 303–376. https://doi.org/10.1016/s0065-2156(08)70223-0.
9. Nafasov A. E. (2012) Seismic Barriers to Protect Unique and Historic Buildings and Structures. Moscow: Moscow State University of Civil Engineering. 20 (in Russian).
10. Berlinov M. V. (2005) Fundamentals of a Comprehensive Assessment of the Dynamic Operation of Building Structures under Vibration Effects of Industrial Equipment. Moscow. 302 (in Russian).
11. Barkan D. D. (1948) Dynamics of bases and Foundations. Leningrad, Stroyvoenmorizdat Publ. 459 (in Russian).
12. Seymov V. M., Shevchenko V. D. (1977) Oscillations of a Round Stamp under Seismic Effects. Dinamika Osnovanii, Fundamentov i Podzemnykh So-Oruzhenii. Materialy 4 Vsesoyuznoi Konferentsii po Dinamike Gruntov [Dynamics of Bases, Foundations and Underground Structures. Proceedings of the 4th All-Union Conference on Soil Dynamics]. Tashkent: Fan Publ., 38–42 (in Russian).
13. Svinkin M. P. (1973) Prediction of Ground Vibrations During Vibrations of Machine Foundations. Building Dynamics. Kyiv, Budivelnik Publ., 34–37 (in Russian).
14. Taranov V. G. (1977) Methods for Experimental Determination of the Dynamic Characteristics of the Base of the Foundations of Vibration Receivers. Dinamika Osnovanii, Fundamentov i Podzemnykh So-Oruzhenii. Materialy 4 Vsesoyuznoi Konferentsii po Dinamike Gruntov [Dynamics of Bases, Foundations and Underground Structures. Proceedings of the 4th All-Union Conference on Soil Dynamics]. Tashkent: Fan Publ., 125–128 (in Russian).
15. Tomson O. I. (1963) Vibrations of Frames of Industrial Buildings. Kolebaniya Zdanii i Sooruzhenii: Sb. Statei [Vibrations of Buildings and Structures. Collection of Articles]. Moscow: Gosstroiizdat Publ., 56–71 (in Russian).
Review
For citations:
Povkolas K.E. Evaluation of Effectiveness of Application of Horizontal Inertial Barriers to Reduce Vibrations Propagating in Ground Environment. Science & Technique. 2023;22(4):286-293. (In Russ.) https://doi.org/10.21122/2227-1031-2023-22-4-286-293
Views:
314
Email this article 