Naslov
Modeling joints of moment-resisting steel frames for nonlinear static pushover analysis

Autori
Krolo, Paulina

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH 2022 - Programme and The Book of Abstracts / Balac, Martina ; Dragicevic, Aleksandra ; Mladenovic, Goran - Beograd : Innovation Center of Faculty of Mechanical Engineering, 2022, 42-42

ISBN
978-86-6060-120-1

Skup
International Conference of Experimental and Numerical Investigations and New Technologies

Mjesto i datum
Zlatibor, Srbija, 05.07.2022. - 08.07.2022

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Beam-to-column joint, hysteresis envelope model, moment-resisting frame, nonlinear static pushover analysis

Sažetak
The effect of the real behaviour of steel joints on the seismic response of steel moment-resisting frames has long been recognised as a crucial aspect in ensuring a safe structural response. Predicting the behaviour of steel joints under cyclic loading can be quite complex and impractical in engineering practice. Numerical approaches based on finite element methods require lengthy calculations and are very exhausting and time-consuming in practice. Laboratory tests, on the other hand, can be time-consuming and costly. A hysteresis envelope model is presented in this paper as a simple way of modelling the joints of moment-resisting steel frames for nonlinear static pushover analysis. The hysteresis envelope model is defined as a trilinear model. The principle of determining the parameters of the hysteresis model is based on the previous definition of the monotonic curve of joints. The monotonic behaviour of joints can be achieved by applying the principles of the component method, which is accepted in Eurocode 3 for the design of joints in steel structures and is available in numerous commercial software. The nonlinear moment- rotation curve, obtained by the component method, should be idealised with a trilinear curve. The parameters of the hysteresis model are then obtained by multiplying the parameters of the monotonic model with a nonlinear exponential function. A double extended beam-to-column bolted connection is used to demonstrate the use of the hysteresis envelope model. Predicting the cyclic behaviour of the connection using the hysteresis envelope model is satisfactory for practical application. The results are based on an estimate obtained by numerical simulations.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA