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Seismic responses of two adjacent buildings. I. Data and analyses

Journal of Structural Engineering

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DOI: 10.1061/(ASCE)0733-9445(1993)119:8(2461)

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Abstract

In this two-part paper, responses of two, adjacent, seven-story buildings in Norwalk, California, to the Whittier-Narrows, Calif, earthquake of Oct. 1, 1987 are studied. Building A, instrumented according to code recommendations, and building B, extensively instrumented, are offset by 16.3 m from one another. The data set includes motions from the superstructure of both buildings, from a downhole below the foundation of building B, and from three free-field sites. Part I of the paper includes descriptions of the buildings, site, instrumentation, and analysis of the data of each building. System identification and spectral analysis techniques are employed in part I. Building A has identical first-mode frequencies of 0.65 Hz for both building axes. The strong-motion response characteristics of building A are considerably different than those determined from low-amplitude tests. Building B has fundamental modes at 0.76 Hz and 0.83 Hz in the major and minor axes, respectively. Torsional and diaphragm effects in building B are negligible.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Seismic responses of two adjacent buildings. I. Data and analyses
Series title:
Journal of Structural Engineering
DOI:
10.1061/(ASCE)0733-9445(1993)119:8(2461)
Volume
119
Issue:
8
Year Published:
1993
Language:
English
Publisher:
ASCE
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2461
Last page:
2476
Number of Pages:
16