Influence of isolation gap size on the collapse performance of seismically base-isolated buildings

The pounding of retaining walls forms a potential risk of degrading the performance of seismically base-isolated buildings subjected to strong, especially near-fault, earthquake ground motions. Incremental dynamic analysis is employed to generate the so-called gap graph, in which two characteristic...

Full description

Saved in:
Bibliographic Details
Published in:Earthquake spectra 2013-11, Vol.29 (4), p.1477-1494
Main Authors: Qu Zhe, Qu Zhe, Kishiki, Shoichi, Nakazawa, Toshiyuki
Format: Article
Language:English
Subjects:
base isolation
buildings
civil engineering
dampers
Earth sciences
Earth, ocean, space
earthquakes
Earthquakes, seismology
Engineering and environment geology. Geothermics
Engineering geology
Exact sciences and technology
failures
ground motion
Internal geophysics
Natural hazards: prediction, damages, etc
retaining walls
seismic response
seismic risk
Seismology
stiffness
structures
walls
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The pounding of retaining walls forms a potential risk of degrading the performance of seismically base-isolated buildings subjected to strong, especially near-fault, earthquake ground motions. Incremental dynamic analysis is employed to generate the so-called gap graph, in which two characteristic gap sizes of a base-isolated building are related with the isolation period of the building and the strength of the superstructure. The gap graph can be used to evaluate the required gap size for a base-isolated building to have certain collapse performance. By means of gap graphs, the interdependent relations of gap size with other important factors that influence the seismic performance of the base-isolated building are examined. In particular, the results show that near-fault pulse-like ground motions are likely to impose much higher demand for the isolation gap than far-field ones.
ISSN:8755-2930
1944-8201
DOI:10.1193/031912EQS097M