On determination of the soil massif frequency characteristics

DOI: 10.37153/2618-9283-2022-5-67-78

Authors:  
Rubric:     Viewpoints   
Key words: frequency characteristics, soil mass, horizontal and vertical groups, computer modeling, pulse excitation of seismic vibrations
Annotation:

Frequency response is one of the essential parameters characterizing seismic vibrations of the soil mass, and its determination is one of the most important tasks of engineering seismology. The article considers various variants of field and computational methods for obtaining the frequency characteristics of the soil massif, both advantages and disadvantages of each of the considered methods are noted. It is shown that the most reliable and physically clear results are obtained when a short pulse is used as an exciting impact.

Used Books:

1. Republican building codes. RSN-65-87. M.: Stroiizdat, 1987 (In Russian).

2.      Deshcherevskaya E.V., Pavlenko O.V. Frequency-dependent Response of Soft (Sandy and Loess) Soils in Seismic Motion and Seismic Rigidity Method. Earthquake engineering. Constructions safety. 2020, no.1, pp.53–62 (In Russian).

3.      Aleshin A.S. The continuum theory of seismic microzonation. М.: Scientific World, 2017. 300 p. (In Russian)

4.      Aleshin А S. On the spectral characteristics of the soil massif. Earthquake engineering. Constructions safety. 2018, no.5, pp.16–22 (In Russian).

5.      SP 283.1325800.2016. High critical building objects. Rules of seismic microzonation. М., 2016. (In Russian)

6.      Shteinberg V.V., Aleksin P.A., Zonina Z.A. Kolebaniya skal`nogo i rykhlogo gruntov v epicentral zone Dagestanskogo zemletryaseniya 14.05.1970 goda. Vliyanie gruntov na intensivnost` seismicheskikh kolebaniyi. Voprosy inzhenernoy seismologii [Problems of engineering seismology]. 1973. Vol.15, pp.103–111 (In Russian)

7.      Bardet J.P. and Tobita T. NERA. F Computer Program for Nonlinear Earthquake Site Response Analyses of Layered Soil Deposits. University of Southern California. Department of Civil Engineering. April, 2001, p. 44.

8.      Saks M.V. Fizicheskie parametry modeli. Seismicheskoe mikrorayionirovanie (Seismiс microzonation). M.: Nauka, 1984, pp.132–142. (In Russian)

9.      Tarasov N.T., Shpil`ker G.A. Sglazhivanie spektrov Furie seismicheskikh signalov. Seismicheskoe mikrorayionirovanie (Seismic microzonation). M.: Nauka, 1984, pp.143–150 (In Russian)

10.   Ratnikova L.I., Levshin A.L. Raschet spectral`nyikh kharakteristik tonkosloistyikh sred. Izv.AS USSR, Fizika Zemli (Physics of the Earth).1967, no.2, pp. 41–53 (In Russian)

11.   Metodika otsenki seismicheskikh vozdeistviy. In.: Zadanie seismicheskikh vozdeistviy. M.: Nauka, 1993 (In Russian)

12.   Nazarov G.N. Skorosti rasprostraneniya prodol`nykh i poperechnykh voln v gruntovykh massivakh i osnovnye injenerno-geologicheskie kharakteristiki gruntov. In: Seismicheskoe mikrorayionirovanie (Seismic microzonation). M.: Nauka, 1977, pp.129–137 (In Russian)