Journal ArticleDOI
Ambient vibration tests of a seven-story reinforced concrete building in Van Nuys, California, damaged by the 1994 Northridge earthquake
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TLDR
In this article, two detailed ambient vibration surveys of a 7-story reinforced concrete building in Van Nuys, California, were conducted after the building was severely damaged by the 17 January 1994, Northridge earthquake (ML=5.3, epicenter 1.5 km west from the building site) and its early aftershocks.About:
This article is published in Soil Dynamics and Earthquake Engineering.The article was published on 2000-08-01. It has received 99 citations till now. The article focuses on the topics: Earthquake engineering & Aftershock.read more
Citations
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Journal ArticleDOI
Apparent Periods of a Building. I: Fourier Analysis
Mihailo D. Trifunac,Mihailo D. Trifunac,S.S. Ivanović,S.S. Ivanović,Maria I. Todorovska,Maria I. Todorovska +5 more
TL;DR: In this article, the amplitude and time-dependent changes of the apparent frequency of a seven-story reinforced-concrete hotel building in Van Nuys, Calif. were analyzed.
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Impulse response analysis of the Van Nuys 7-storey hotel during 11 earthquakes and earthquake damage detection
TL;DR: In this article, wave travel times of vertically propagating waves are measured in the Van Nuys 7-storey hotel, located in the Los Angeles metropolitan area, from impulse response functions computed by deconvolution of the recorded earthquake response.
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Structure, soil-structure response and effects of damage based on observations of horizontal-to-vertical spectral ratios of microtremors
TL;DR: In this paper, a series of experiments are reported to evaluate the effect of soil-structure interaction in estimates of site response in the presence of tall buildings, and an experiment on the frequency change due to damage was performed.
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The Analysis of Long‐Term Frequency and Damping Wandering in Buildings Using the Random Decrement Technique
TL;DR: In this paper, the authors focused on the long-term variation of frequency and damping in several buildings, using the Random Decrement Technique (RDT) for structural health monitoring.
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Evolution of accelerographs, data processing, strong motion arrays and amplitude and spatial resolution in recording strong earthquake motion ☆
TL;DR: A review of the advances in strong motion recording since the early 1930s is presented, based mostly on the experiences in the United States, with particular emphasis on the amplitude and spatial resolution of recording, which both must be ‘adequate’ to capture the nature of strong earthquake ground motion and response of structures.
References
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Journal ArticleDOI
The slip history of the 1994 Northridge, California, earthquake determined from strong-motion, teleseismic, GPS, and leveling data
TL;DR: In this paper, a rupture model of the Northridge earthquake, determined from the joint inversion of near-source strong ground motion recordings, P and SH teleseismic body waves, Global Positioning System (GPS) displacement vectors, and permanent uplift measured along leveling lines, is presented.
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Comparisons between ambient and forced vibration experiments
TL;DR: In this article, the authors compared the effect of unwanted modes on the response near resonance of the mode being sought and showed that the mode amplitudes determined by ambient and forced vibration tests show systematic departure for high modes and near the top levels of buildings tested.
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A three-dimensional dislocation model for the San Fernando, California, earthquake of February 9, 1971
TL;DR: In this article, the authors used the data from five strong-motion accelerograph stations centered above and surrounding the fault to develop an approximate three-dimensional dislocation model for the San Fernando earthquake and found that the dislocation originates near the instrumentally determined epicenter at a depth of 9.2 km and then propagates southward and upward with a velocity of 2 km/sec.
Journal ArticleDOI
Apparent Periods of a Building. II: Time-Frequency Analysis
Mihailo D. Trifunac,Mihailo D. Trifunac,S.S. Ivanović,S.S. Ivanović,Maria I. Todorovska,Maria I. Todorovska +5 more
TL;DR: In this paper, the analysis of the apparent frequency of a seven-story reinforced-concrete hotel building in Van Nuys, Calif., is extended to consider its time-dependent changes, both short and long term.
Journal ArticleDOI
Isolation of soil‐structure interaction effects by full‐scale forced vibration tests
TL;DR: In this paper, the effects of soil-structure interaction during forced vibration tests were analyzed for the nine-storey reinforced concrete Millikan Library Building and it was shown that the deformation of the superstructure at the fundamental frequencies of the system is almost entirely due to the inertial forces generated by translation and rocking of the base.