Techno Press
Techno Press

Structural Engineering and Mechanics   Volume 4, Number 5, September 1996, pages 497-511
DOI: http://dx.doi.org/10.12989/sem.1996.4.5.497
 
Efficient seismic analysis of multi-story buildings
Lee DG, Kim HC

 
Abstract     [Full Text]
    The equivalent static force procedure and the response spectrum analysis method are widely used for seismic analyses of multi-story buildings. The equivalent static force procedure is one of the most simple but less accurate method in predicting possible seismic response of a structure. The response spectrum analysis method provides more accurate results while it takes much longer computational time.

In the response spectrum method, dynamic response of a multi-story building is obtained by combining modal responses through a proper procedure such as SRSS or CQC method. Since all of the analysis results are expressed in absolute values, structural engineers have difficulties to combine them with the results obtained from the static analysis. Design automation is interrupted at this stage because of the difficulty in the decision of the most critical design load.


Pseudo-dynamic analysis method proposed in this study provides more accurate seismic analysis results than those of the equivalent static force procedure since the dynamic characteristics of a structure is consider-ed. And the proposed method has an advantage in combination of the analysis results due to gravity loads and seismic loads since the direction of the forces can be considered.

 
Key Words
    seismic analysis, equivalent static force procedure, response spectrum analysis method, pseudo-dynamic analysis method, lateral seismic force, story shear force, multi-story building
 
Address
Lee DG, SUNG KYUN KWAN UNIV,DEPT ARCHITECTURAL ENGN,SUWON 440746,SOUTH KOREA
KYUNG HEE UNIV,DEPT ARCHITECTURAL ENGN,KYUNGKIDO 449701,SOUTH KOREA
 

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