Investigation of overstrength in asymmetrıc-plan structures as an optımum design strategy

Date

2017-10-13

Author

Kaatsız, Kaan
Sucuoğlu, Haluk

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Uneven distribution of seismic demand in asymmetric-plan structures is a widely investigated issue in the field ofearthquake engineering. Contemporary seismic design strategies, which are based on linear elastic behaviour of thestructure and employ uniform design parameters (single load reduction factor, etc.) throughout an asymmetric system,generally show poor performance in terms of realized ductilities and non-uniform damage distribution due to strongtorsional coupling associated with asymmetric-plan systems. In some cases, actual nonlinear behaviour of the structuredisplay significant deviation from what is estimated by a linear elastic seismic design. This study investigates ways topredict uneven seismic demand distribution among structural members of a single story asymmetric-plan system.Amount of overstrength present in a single story asymmetric structure is investigated parametrically. By providing ameasured amount of overstrength to the appropriate structural elements, an optimum design in terms of balancedinelastic seismic demands along an asymmetric-plan story is sought. The results obtained from the parametric study ofthe asymmetric system are utilized further to compile the Torsional Performance Spectra that is proposed as a designtool to estimate the seismic response of the actual multi-story asymmetric structures.

Subject Keywords

Overstrength, Torsional coupling, Seismic design, Asymmetric structures, Torsional performance spectrum

URI

http://www.tdmd.org.tr/TR/Genel/4UDMSK/pdf2017/3217.pdf
https://hdl.handle.net/11511/74399
http://scholar.googleusercontent.com/scholar?q=cache:3FUhd7gFO44J:scholar.google.com/&hl=en&as_sdt=0,5
http://www.tdmd.org.tr/TR/Genel/4UDMSK/pdf2017/3217.pdf

Conference Name

4. Uluslararası Deprem Mühendisliği ve Sismoloji Konferansı (11-13 Ekim 2017 )

Collections

Department of Civil Engineering, Conference / Seminar

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Citation Formats

K. Kaatsız and H. Sucuoğlu, “Investigation of overstrength in asymmetrıc-plan structures as an optımum design strategy,” presented at the 4. Uluslararası Deprem Mühendisliği ve Sismoloji Konferansı (11-13 Ekim 2017 ), Anadolu Üniversitesi – Eskişehir, Türkiye, 2017, Accessed: 00, 2021. [Online]. Available: http://www.tdmd.org.tr/TR/Genel/4UDMSK/pdf2017/3217.pdf.