Study on Reasonable Mode Number of Composite Frame and Reinforced Concrete Core Hybrid Structures in High-Rise Buildings

Shu Yun Zhang; Guo Liang Bai; Zhi Gang Gao

doi:10.4028/www.scientific.net/AMR.368-373.285

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 368-373Study on Reasonable Mode Number of Composite Frame...

Study on Reasonable Mode Number of Composite Frame and Reinforced Concrete Core Hybrid Structures in High-Rise Buildings

Abstract:

For seismic design of composite frame and reinforced concrete core hybrid structures in high-rise buildings, the response spectrum method is influenced to a large extent by mode combination rules and number of combined modes. The dynamic characteristics of composite frame and concrete core hybrid structures were studied through modal analysis, natural vibration periods and mode shape of hybrid structures had calculated and analyzed, the results show that the natural vibration frequencies are near, the complete quadratic combination of mode combination rule was recommended for avoiding higher order mode shape lose in the response spectrum method. The reasonable number of combined modes for response spectrum method were studied by truncation error analysis, it is proposed that more than 20 modes are combined. The results of the time history analysis und The three dimensional finite element er three earthquake waves were compared with results of response spectrum, indicating that the maximum response of hybrid structures can be obtained under reasonable mode number.

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Periodical:

Advanced Materials Research (Volumes 368-373)

Pages:

285-288

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.368-373.285

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Online since:

October 2011

Authors:

Shu Yun Zhang, Guo Liang Bai, Zhi Gang Gao

Keywords:

Hybrid Structure, Mode Combination Rule, Reasonable Mode Number, Response Spectrum Method, Truncation Error Analysis

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