Location

San Diego, California

Session Start Date

5-24-2010

Session End Date

5-29-2010

Abstract

Predominant ground motion frequencies and spectra could differ sufficiently at different earthquakes on one site. The reasons of the differences are the epicenter distance, the focal depth, and many others. As it is well known, the frequency spectral configuration and predominant frequency values influence the structural seismic response and seismic behavior of structures (Mexico earthquakes 1957, 1962; Bucharest, 1977, Spitak, Armenia, 1988 and other). The maximum seismic response depends of how close the fundamental frequency values of the structure are to the predominant ground motion frequencies. Seismoisolation as an effective approach to seismic response control became popular recent decades in many countries. The conclusions of RCEE analytical and experimental studies are that in abovementioned cases when different spectra and predominant frequencies could be expected at a given site structures with changing (self-adjusting) natural frequencies could be effective for adaptive seismic response control. Several dozens of structures with switch-off reserve elements are designed with RCEE participation and constructed in Siberia, in Caucasus, near Lake Baykal and at other earthquake dangerous areas of Russian Federation. Besides, of pile-in-tube foundations also other structural systems are constructed. Among these systems are rocking supports with reserve switch-off elements, flexible columns with switch-off reserve rigid elements,pile-in-tube, sliding supports and others.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Fifth Conference

Publisher

Missouri University of Science and Technology

Publication Date

5-24-2010

Document Version

Final Version

Rights

© 2010 Missouri University of Science and Technology, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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May 24th, 12:00 AM May 29th, 12:00 AM

Pile-in-Tube Foundations with Reserve Switch-off Elements and Other Systems for Seismic Response Adaptive Control

San Diego, California

Predominant ground motion frequencies and spectra could differ sufficiently at different earthquakes on one site. The reasons of the differences are the epicenter distance, the focal depth, and many others. As it is well known, the frequency spectral configuration and predominant frequency values influence the structural seismic response and seismic behavior of structures (Mexico earthquakes 1957, 1962; Bucharest, 1977, Spitak, Armenia, 1988 and other). The maximum seismic response depends of how close the fundamental frequency values of the structure are to the predominant ground motion frequencies. Seismoisolation as an effective approach to seismic response control became popular recent decades in many countries. The conclusions of RCEE analytical and experimental studies are that in abovementioned cases when different spectra and predominant frequencies could be expected at a given site structures with changing (self-adjusting) natural frequencies could be effective for adaptive seismic response control. Several dozens of structures with switch-off reserve elements are designed with RCEE participation and constructed in Siberia, in Caucasus, near Lake Baykal and at other earthquake dangerous areas of Russian Federation. Besides, of pile-in-tube foundations also other structural systems are constructed. Among these systems are rocking supports with reserve switch-off elements, flexible columns with switch-off reserve rigid elements,pile-in-tube, sliding supports and others.