Calibration of analytical models to assess wind-induced acceleration responses of tall buildings in serviceability level

Ji Young Kim, Eunjong Yu, Dae Young Kim, Sang Dae Kim

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

An accurate estimate of natural frequencies is essential to correctly predict wind-induced acceleration for serviceability checks in the design of tall buildings. In this study, finite element (FE) models for three tall reinforced concrete buildings were constructed using a popular PC-based finite element analysis program and calibrated to match their fundamental natural frequencies to actual values extracted from the acceleration measurements using the system identification technique. The modification of the FE models for calibration included: (i) consideration of the effect of beam-end-offsets, (ii) modeling of floor slabs instead of using 'rigid diaphragm assumptions', (iii) inclusion of major non-structural components such as plain concrete walls and cement brick walls, and (iv) higher elastic modulus of actual concrete than specified value. Natural frequency estimates from the calibrated FE models and the measurements showed remarkable agreement in all the buildings. Using the dynamic properties obtained from the calibrated FE models and the wind-tunnel test results, the acceleration response of one building during a typhoon was predicted and compared with the measured accelerations. Predicted accelerations during the typhoon also indicated a reasonable match with the measured values.

Original languageEnglish
Pages (from-to)2086-2096
Number of pages11
JournalEngineering Structures
Volume31
Issue number9
DOIs
Publication statusPublished - 2009 Sep 1

Fingerprint

Tall buildings
Analytical models
Calibration
Natural frequencies
Concretes
Acceleration measurement
Concrete buildings
Diaphragms
Brick
Wind tunnels
Reinforced concrete
Identification (control systems)
Cements
Elastic moduli
Finite element method

Keywords

  • Finite element modeling
  • Full-scale measurement
  • Serviceability
  • Structural analysis
  • Tall building
  • Vibration
  • Wind-induced acceleration

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Calibration of analytical models to assess wind-induced acceleration responses of tall buildings in serviceability level. / Kim, Ji Young; Yu, Eunjong; Kim, Dae Young; Kim, Sang Dae.

In: Engineering Structures, Vol. 31, No. 9, 01.09.2009, p. 2086-2096.

Research output: Contribution to journalArticle

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