Investigations of elastic vibration periods of tall reinforced concrete office buildings

Ali Al-Balhawi, Binsheng Zhang

Research output: Contribution to journalArticle

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Abstract

The assessment of wind-induced vibration for tall reinforced concrete (RC) buildings requires the accurate estimation of their dynamic properties, e.g. the fundamental vibration periods and damping ratios. In this study, RC frame-shear wall systems designed under gravity and wind loadings have been evaluated by utilising 3D FE modelling incorporating eigen-analysis to obtain the elastic periods of vibration. The conducted parameters consist of the number of storeys, the plan aspect ratio (AR) of buildings, the core dimensions, the space efficiency (SE), and the leasing depth (LD) between the internal central core and outer frames. This analysis provides a reliable basis for further investigating the effects of these parameters and establishing new formulas for predicting the fundamental vibration periods by using regression analyses on the obtained results. The proposed constrained numerically based formula for vibration periods of tall RC frame-shear wall office buildings in terms of the height of buildings reasonably agrees with some cited formulas for vibration period from design codes and standards. However, the same proposed formula has a high discrepancy with other cited formulas from the rest of design codes and standards. Also, the proposed formula agrees well with some cited experimentally based formulas.
Original languageEnglish
Pages (from-to)209-223
Number of pages15
JournalWind and Structures, An International Journal
Volume29
Issue number3
DOIs
Publication statusPublished - 1 Sep 2019

Fingerprint

Concrete buildings
Office buildings
Reinforced Concrete
Reinforced concrete
Shear walls
Vibration
Vibrations (mechanical)
Aspect ratio
Gravitation
Damping
3D Modeling
Dynamic Properties
Buildings
Aspect Ratio
Discrepancy
Gravity
Regression
Internal

Keywords

  • Reinforced concrete
  • Shear walls
  • Office buildings
  • Vibration period
  • Wind load
  • Space efficiency

Cite this

Al-Balhawi, Ali ; Zhang, Binsheng. / Investigations of elastic vibration periods of tall reinforced concrete office buildings. In: Wind and Structures, An International Journal. 2019 ; Vol. 29, No. 3. pp. 209-223.
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Al-Balhawi, A & Zhang, B 2019, 'Investigations of elastic vibration periods of tall reinforced concrete office buildings', Wind and Structures, An International Journal, vol. 29, no. 3, pp. 209-223. https://doi.org/10.12989/was.2019.29.3.209

Investigations of elastic vibration periods of tall reinforced concrete office buildings. / Al-Balhawi, Ali ; Zhang, Binsheng.

In: Wind and Structures, An International Journal, Vol. 29, No. 3, 01.09.2019, p. 209-223.

Research output: Contribution to journalArticle

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