Wall damper “WD CVS” as effective device for increasing of seismic performance of metal frames

DOI: 10.37153/2618-9283-2023-5-74-90

Authors:  
Rubric:     Design, building and reconstruction of aseismic constructions   
Key words: wall damper, frame buildings, seismic impact, damper, mathematical model, maxwell model
Annotation:

The article discusses the design of a wall damper which is able to dissipate kinetic energy in three orthogonal directions. Such a wall damper is able to significantly reduce seismic loads in metal frame buildings not only from translational, but also from possible rotational seismic impacts. A mathematical model is presented describing the dynamics of a one-story building equipped with a wall damper, the work of which is described by the Maxwell model. The developed wall damper is installed by means of an elastic metal brace. It has been considered that the stiffness of the elastic brace for the effective dissipation of the wall damper should exceed the equivalent stiffness of the damper by at least five times. It is shown how, using the developed mathematical model, it is possible to choose the optimal number of dampers as the first approximation. The optimization criterion is developed. Analysis of the spatial model of metal frame was carried out. The spatial model of the metal frame building subjected to a three-component seismic excitation was analyzed taking into account the selected number of dampers. The developed wall damper reduces the internal forces and displacements of the top of the building by half.

Used Books:

1. Uzdin A.M., Elizarov S.V., Belash T.A. Sejsmostojkie konstrukcii transportnyh zdanij i sooruzhenij: ucheb. posobie. Moscow: FGBOU «Uchebno-metodicheskij tsentr po obrazovaniyu na zheleznodorozhnom transporte». 2012. 501 p.

2. Kostarev V.V., Nawrotzki P., Vasil’ev P., Vaindrakh M. (2021). Developing and natural scale testing of the 3D BCS base isolation system. World Conference on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures Proceedings. https://doi.org/10.37153/2686-7974-2019-16-460-472

3. Peter Nawrotzki, Victor Kostarev, Daniel Siepe, Frank Barutzki, Victor Salcedo. (2022).          3D Seismic isolation systems for the nuclear industry layout, design & qualification. Transactions, SMiRT-26 Berlin/Potsdam, Germany, July 10–15, 2022, Division V.

4. Alekseev V.N., Berkovskij A.M., Vasil'ev P.S., Kostarev V.V., Pavlov D.Yu., A.Yu. Shchukin. Ispol'zovanie tekhnologii vysokovyazkogo dempfera dlya povysheniya dinamicheskoj nadezhnosti truboprovodov. OOO "CKTI-Vibrosejsm", 1996. (El. resurs: https://www.cvs.spb.su/images/abooks/publications//Dampers.pdf).

5. Christopoulos C., Filiatrault A. (2006). Principles of Passive Supplemental Damping and Seismic Isolation. In IUSS Press (Vol. 133, Issue 8).