On the use of the effect of dynamic vibration damping in some structural systems of high-rise buildings

DOI: 10.37153/2618-9283-2025-1-11-27

Authors:  
Rubric:     Design, building and reconstruction of aseismic constructions   
Key words: high-rise buildings; suspended structures, dynamic vibration dampers, earthquake-resistant construction solutions
Annotation:

Introduction. The Necessity of constructing high-rise buildings in dense urban development in the 1960s led to the introduction of a new structural system of high–rise buildings with rigid core. One of its varieties is the suspended structural system, which has been implemented in many buildings around the world. In addition to the architectural advantages of the suspended buildings, the system has design features associated with significant flexibility of the load-bearing elements. This feature of high-rise buildings makes allows reducing the seismic load on structures. The technical implementation of the suspended floors has some difficulties. The calculation methods did not allow us to show the behavior of suspended structures under dynamic influences. This was an obstacle to the use of a suspended system in the construction of high-rise buildings in seismically active areas in the past. Another approach to providing seismic protection for high-rise buildings is the installation of dynamic vibration dampers. This requires the insertion of additional massive elements into the structure of the building, occupying its internal space. Suspended structures in buildings with a load-bearing core can potentially act as elements of dynamic vibration dampers. Modern methods of calculating mathematical models and computing complexes allow us to verify this assumption. These methods are capable of performing complex tasks in the field of dynamic linear and nonlinear vibrations, in particular vibrations of suspended structures of buildings. This article presents a new design solution for a suspended building with rigid core. An assessment of the influence of the engineering parameters of the suspended part of the building on its seismic resistance is given.

Materials and methods. For evaluation of the effectiveness of the proposed building structural solution in the conditions of seismic impact, numerical modeling of the building in the LIRA software package in a stepwise nonlinear setting was performed.

Results. Movements and accelerations of a suspended building during an earthquake depend on the magnitude of the longitudinal stiffness of the elastic links and the mass of the upper suspended floor block. The rational parameters of suspended structures have been determined to reduce the oscillations of the building.

Conclusions. A change in the mass of suspended floors and the rigidity of the connections between the elements of suspended building can lead to a decrease in displacements and accelerations of structures and damping system vibrations. Further research can be devoted to the analytical determination of the optimal parameters of suspended structures that ensure the dispersion of seismic action energy. Used Books:

 

1.      Savinov O.A. On the use of a dynamic vibration damper]. Proceedings of the Scientific Research Sector of the Leningrad Branch of the Trust for Deep Work. 1940, no 2, pp. 30–35. [In Russian]

2.      Korenev B.G. Dynamic vibration dampers / B.G. Korenev, L.M. Reznikov. Moscow: Nauka, 1988, 303 p. [In Russian]

3.      Uzdin A.M. Earthquake-resistant structures of transport buildings and structures: a textbook / A.M. Uzdin, S.V. Elizarov, T.A. Belash. Moscow: FGBU DPO «Training and Methodological Center for Education in Railway Transport». 2012, 501 p. [In Russian]

4.      Uzdin A.M. Fundamentals of the theory of earthquake resistance and earthquake-resistant construction of buildings and structures / A.M. Uzdin, T.A. Sandovich, Al-Naser-Moxomad Samix Amin. Saint-Petersburg: VNIIG, 1993, 175 p. [In Russian]

5.      Tsejtlin A.I. Seismic vibrations of a multi-storey building with a "flexible" upper floor. Reducing the material consumption and labor intensity of earthquake-resistant construction: abstracts of the All-Union Meeting / A.I. Tsejtlin, L.I. Kim. Moscow: Stroyizdat, 1982. 85 p. [In Russian]

6.      Khachiyan E.E. Seismic impact and prediction of structure behavior / E.E. Xachiyan. Yerevan: «Gitutyun» NAS RA, 2005, 555 p. [In Russian]

7.      Belash T.A. Seismic isolation. Current status / T.A. Belash, V.S. Belyaev, A.M. Uzdin [and others]. Selected articles by Professor O.A. Savinov and key reports presented at the fourth Savinov Readings. Saint-Petersburg: Leningrad Promstroyproekt, 2004, pp. 95 –128. [In Russian]

8.      Uzdin A.M. Features of the calculation substantiation of the parameters of dynamic vibration dampers for seismic protection of buildings and structures / A.M. Uzdin, O.P. Nesterova, M.Yu. Fedorova [and others]. XIV Russian National Conference on Earthquake Engineering and Seismic Zoning. Materials of the scientific and practical conference. Moscow: Russian Association for earthquake engineering and protection from natural and manmade hazards, 2021, pp. 135–136. [In Russian]

9.      Nesterova O.P. Features of the use of dynamic vibration dampers for seismic protection of buildings and structures / O.P. Nesterova, A.M. Uzdin, M.Yu. Fedorova. IX Polyakhov readings. Proceedings of the International Scientific Conference on Mechanics. St Petersburg University. Saint-Petersburg: LLC «Publishing House VVM», 2021, pp. 119–121. [In Russian]

10. Nesterova O.P. Consideration of damping in the selection of parameters of dynamic vibration dampers / O.P. Nesterova, A.M. Uzdin, M.V. Freze. Natural and man-made risks. Safety of structures. 2022, no. 5, pp 35–42. [In Russian]

11. Nesterova O.P. Features of the selection of dynamic vibration dampers for seismic oscillations during strong earthquakes / O.P. Nesterova, A.M. Uzdin. Architecture-construction-transport. Materials of the 74th scientific conference of the University's faculty and graduate students, in 2 parts. Volume. Part I. Architecture and construction. Saint Petersburg State University of Architecture and Civil Engineering. 2018, pp. 43–48. [In Russian]

12. Nesterova O.P. About one way to increase the seismic resistance of port berths / O.P. Nesterova, A.M. Uzdin, N.Yu. Uxova [and others]. Natural and man-made risks. Safety of structures. 2022, no. 3, pp. 26–28. [In Russian]

13. Safronova V.Yu. The effectiveness of a flexible upper floor superstructure to increase the earthquake resistance of buildings on non-rock foundations / V.Yu. Safronova, A.A. Pronina, A.M. Uzdin. Scientific, technical and economic cooperation of the Asia-Pacific countries in the 21st century. 2022, no. 1, pp. 483–487. [In Russian]

14. Zheliostov D.A. Some features of the selection of parameters of two-mass dynamic seismic vibration dampers / D.A. Zheliostov, A.A. Medvedeva, A.M. Uzdin, N.Yu. Ukhova, O.P. Nesterova. Natural and man-made risks. Safety of structures. 2023, no. 1, pp. 27–31. [In Russian]