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Structural Engineering and Mechanics Volume 54, Number 6, June25 2015 , pages 1175-1200 DOI: https://doi.org/10.12989/sem.2015.54.6.1175 |
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On the fundamental period of infilled RC frame buildings |
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Panagiotis G. Asteris, Constantinos C. Repapis, Liborio Cavaleri, Vasilis Sarhosis and Adamantia Athanasopoulou
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| Abstract | ||
| This paper investigates the fundamental period of vibration of RC buildings by means of finite element macro-modelling and modal eigenvalue analysis. As a base study, a number of 14-storey RC buildings have been considered \"according to code designed\" and \"according to code non-designed\". Several parameters have been studied including the number of spans; the span length in the direction of motion; the stiffness of the infills; the percentage openings of the infills and; the location of the soft storeys. The computed values of the fundamental period are compared against those obtained from seismic code and equations proposed by various researchers in the literature. From the analysis of the results it has been found that the span length, the stiffness of the infill wall panels and the location of the soft storeys are crucial parameters influencing the fundamental period of RC buildings. | ||
| Key Words | ||
| fundamental period; infilled frames; masonry; modal analysis; reinforced concrete buildings | ||
| Address | ||
| Panagiotis G. Asteris: Computational Mechanics Laboratory, School of Pedagogical and Technological Education, Heraklion, GR 14121, Athens, Greece Constantinos C. Repapis: Department of Civil Engineering, Technological Education Institute of Piraeus, 250 Thivon and Petrou Ralli Str., Aigaleo 122 44, Athens, Greece Liborio Cavaleri: Dipartimento di Ingegneria Civile, Ambientale, Aerospaziale e dei Materiali (DICAM), University of Palermo, Italy Vasilis Sarhosis: School of Engineering, Cardiff University, Queen`s Building, Newport Road, Cardiff CF24 3AA, UK Adamantia Athanasopoulou: Computational Mechanics Laboratory, School of Pedagogical and Technological Education, Heraklion, GR 14121, Athens, Greece | ||