The effects of concrete stiffness and strength on the seismic response of RC frame buildings

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper is concerned with the effects of concrete material properties on the seismic response of reinforced concrete frame buildings. In particular, the influence of concrete stiffness and strength on the dynamic seismic response of RC buildings is assessed. A series of nonlinear dynamic time-history analyses of model RC frame buildings are conducted. A range of concrete stiffness and strength are examined and under a number of earthquakes of different amplitude, duration and frequency content. It is shown that concrete stiffness is more dominant factor affecting the dynamic seismic response of reinforced concrete structures than concrete strength. Moreover, it is shown that the direction of the applied earthquake motion also affects the dynamic response of the framed building, especially in cases of irregular structures with differential stiffness in different directions. It is also observed from the response spectra that the applied seismic load resonates with the dominant mode of building vibration in the direction of the applied seismic load. This may suggest that real recorded earthquake motions from instrumented concrete buildings may be processed to identify their dynamic modal characteristics.
LanguageEnglish
Title of host publicationUKIERI Concrete Congress - Concrete: The Global Builder
StatusPublished - 8 Mar 2019
EventUKIERI Concrete Congress - Punjab, Jalandhar, India
Duration: 2 Nov 20155 Nov 2015

Conference

ConferenceUKIERI Concrete Congress
CountryIndia
CityJalandhar
Period2/11/155/11/15

Cite this

Liu, L., & Pelecanos, L. (2019). The effects of concrete stiffness and strength on the seismic response of RC frame buildings. In UKIERI Concrete Congress - Concrete: The Global Builder

The effects of concrete stiffness and strength on the seismic response of RC frame buildings. / Liu, Lu; Pelecanos, Loizos.

UKIERI Concrete Congress - Concrete: The Global Builder. 2019.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, L & Pelecanos, L 2019, The effects of concrete stiffness and strength on the seismic response of RC frame buildings. in UKIERI Concrete Congress - Concrete: The Global Builder. UKIERI Concrete Congress, Jalandhar, India, 2/11/15.
Liu L, Pelecanos L. The effects of concrete stiffness and strength on the seismic response of RC frame buildings. In UKIERI Concrete Congress - Concrete: The Global Builder. 2019
Liu, Lu ; Pelecanos, Loizos. / The effects of concrete stiffness and strength on the seismic response of RC frame buildings. UKIERI Concrete Congress - Concrete: The Global Builder. 2019.
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