Experimental analysis of seismic torsional ground motion recorded by the LSST-Lotung array

2002 ◽  
Vol 31 (12) ◽  
pp. 2141-2148 ◽  
Author(s):  
Nasser Laouami ◽  
Pierre Labbe
Keyword(s):  
Ground Motion ◽  
Experimental Analysis ◽  
Torsional Ground Motion

Rotational Components of Earthquake Motion

1975 ◽  
Vol 2 (4) ◽  
pp. 430-436 ◽  
Author(s):  
N. D. Nathan ◽  
J. R. MacKenzie
Keyword(s):  
Ground Motion ◽  
Earthquake Motion ◽  
Rotational Components ◽  
Earthquake Record ◽  
Code Provisions ◽  
Torsional Ground Motion

Following the ideas of Newmark, a complete record of torsional ground motion is generated from the two translational components of an earthquake record. The approximate spectra developed by Newmark are generally confirmed. The assumptions and the limits of validity are discussed. Code provisions for this phenomenon are commented upon.

scholarly journals Seismic torsional effects on buildings

1976 ◽  
Vol 9 (1) ◽  
pp. 79-83 ◽  
Author(s):  
D. G. Elms
Keyword(s):  
New Zealand ◽  
Ground Motion ◽  
Building Structures ◽  
The Third ◽  
Accidental Eccentricity ◽  
Parabolic Function ◽  
Torsional Ground Motion

This paper gives the background to the seismic torsional provisions of the New Zealand Loadings Code. These provisions attempt to deal with three effects: accidental eccentricity, torsional ground motion, and coupling between torsional and translational modes. The first two effects lead to an effective eccentricity of one-tenth of the width of a building, while the third leads to a parabolic function of the calculated eccentricity: this was obtained by applying existing results for torsional amplification to a number of typical building structures.

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