Empirical formula for fundamental vibration periods of reinforced concrete buildings in Taiwan

Li-Ling Hong, Woei Luen Hwang

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)


More than 30 buildings around Taiwan have been selected to monitor the floor responses under seismic excitation. The structural array monitoring system in each building controls at most 27 channels of accelerometers distributed in several floors. Those buildings were triggered by many events during the past five years of operation. In each building, the records at the basement can be considered as the ground excitation, and the others at the upper floors are the structural responses. The frequency transfer functions of those buildings can be identified by ARX models, and then the fundamental vibration periods are estimated. The identified fundamental vibration periods using different events are compared in order to ensure the reliability of system identification. An empirical formula in predicting the fundamental vibration period is presented through the regression to the identified fundamental vibration periods of 21 reinforced concrete (RC) moment-resisting frame (MRF) buildings. It is found that the height of a building plays an important role in predicting the fundamental vibration period, compared with the length, width, and time after completion of the building. It is also found that the RC MRF buildings in Taiwan tend to be stiffer than those in the U.S.

Original languageEnglish
Pages (from-to)327-337
Number of pages11
JournalEarthquake Engineering and Structural Dynamics
Issue number3
Publication statusPublished - 2000 Jan 1

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

Fingerprint Dive into the research topics of 'Empirical formula for fundamental vibration periods of reinforced concrete buildings in Taiwan'. Together they form a unique fingerprint.

Cite this