Nonlinear dynamic response of a steel frame with bolted apex connection to a strong seismic shock / Dorota Jasinska, Joanna M. Dulinska, Pawel Boron // W: Recent Advances in Mechanics, Mechatronics and ... więcej

Nonlinear dynamic response of a steel frame with bolted apex connection to a strong seismic shock / Dorota Jasinska, Joanna M. Dulinska, Pawel Boron // W: Recent Advances in Mechanics, Mechatronics and Civil, Chemical and Industrial Engineering : proceedings of the 2015 International Conference on Civil Engineering (CIVILENG 2015) ; Proceedings of the 2015 International Conference on Continuum Mechanics (COME 2015) ; Proceedings of the 2015 International Conference on Industrial Engineering (INDE 2015) ; Proceedings of the 2015 International Conference on Materials (MATERIALS 2015) ; Proceedings of the 2015 International Conference on Mechatronics and Robotics, Structural Analysis (MEROSTA 2015) ; Proceedings of the 2015 International Conference on Chemistry and Chemical Engineering (CCE 2015), Zakynthos Island, Greece July 16-20, 2015 / ed. by Imre J. Rudas, assoc. ed. Dora Foti. – [S.l.] : [s.n.], 2015. – (Mathematics and Computers in Science and Engineering Series, ISSN 2227-4588 ; 49). – S. 154-161 : il. – Bibliogr. 12 poz., Abstr. – Mat. konf. wydane również w wersji na CD. – ISBN 978-1-61804-325-2

In the paper the global nonlinear dynamic response of a steel frame, constituting the basic module of the primary structural system of the steel hall, to a strong seismic shock was analyzed. Additionally, ... więcej

In the paper the global nonlinear dynamic response of a steel frame, constituting the basic module of the primary structural system of the steel hall, to a strong seismic shock was analyzed. Additionally, the nonlinear behavior of the roof ridge of the frame designed as a bolted apex connection was studied in detail. A strong earthquake of Northridge (1994) was applied as the kinematic excitation of the structure. To guarantee the real nonlinear behavior of the steel material the material parameters of the structural steel were determined experimentally on the basis of the tensile test of the steel specimen. The dynamic analysis revealed that the seismic response of the frame to the shock was strongly nonlinear. It occurred, that the frame lost global stability during the phase of strong ground motion of the shock. The frame also experienced the out-of-plane motion and the roof ridge was rotated by circa 60o. The disintegration of the bolted apex connection appeared: the end plates went plastic and they partially lost contact. The complete yielding of some of pretensioned bolts was caused by additional tension resulting from the split of the end plates. The bending of the bolts occurred due to the split of the connection and the deformation of the end plates.