Torsional Coupling and Earthquake Response of Simple Elastic and Inelastic Systems

1981 ◽  
Vol 107 (8) ◽  
pp. 1569-1588 ◽  
Author(s):  
Christopher L. Kan ◽  
Anil K. Chopra
Keyword(s):  
Earthquake Response ◽  
Torsional Coupling

Influence of the Isolated Layer Damping Distribution of the Lateral-Torsional Coupling Isolated System on Earthquake Response

2011 ◽  
Vol 368-373 ◽  
pp. 1186-1191
Author(s):  
Xiang Zhen Li ◽  
Yi Feng Xie ◽  
Bing Li
Keyword(s):  
Dynamic Equations ◽  
Simplified Model ◽  
Earthquake Response ◽  
Dynamic Parameters ◽  
Structure Dynamic ◽  
Torsion Effect ◽  
Torsional Coupling

On the basis of the simplified model of lateral-torsional coupling isolated structure, dynamic equations of non-proportional damping isolated system of lateral-torsional coupling is established, and the influence of the isolated layer and the superstructure damping dynamic parameters on earthquake response is calculated and analyzed. The results show that, by reasonable adjustment of the damping distribution of the isolated layer, the torsion effect of the superstructure can be significantly reduced, and the basis displacement as well as rotation can be better suppressed, providing a basis for the design of the isolated layer damper reasonable distribution.

Feasibility Study on Forced Decoupling Method Analyzing Earthquake Response of Soil-Asymmetric Structure

2011 ◽  
Vol 368-373 ◽  
pp. 377-381
Author(s):  
Mei Li Wang ◽  
Jiao Xia Lan ◽  
Yan Hong Wang ◽  
Lei Yu Zhang
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Engineering Calculation ◽  
Earthquake Response ◽  
Asymmetric Structure ◽  
Direct Integral ◽  
Coupling Vibration ◽  
Decoupling Method ◽  
Matlab Program ◽  
Torsional Coupling

Time domain analysis on earthquake response of soil-asymmetric structure interaction system was carried out in this paper in order to study the feasibility of the forced decoupling method. Acoording to lateral-torsional coupling vibration equations of soil-asymmetric structure system, the direct integral MATLAB program in time domain were made used method. Feasibility of forced decoupling method was carried out by comparing the result in time domain with the result in frequency domain. Finally, it is derived that the results are very close to each other, which verify the feasibility of forced decoupling method. This conclusion can supply references to engineering calculation and design of structure.

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