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Structural Engineering and Mechanics Volume 57, Number 6, March25 2016 , pages 1065-1084 DOI: https://doi.org/10.12989/sem.2016.57.6.1065 |
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The stability of semi-rigid skeletal structures accounting for shear deformations |
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Halil Gorgun
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| Abstract | ||
| The analysis and design of skeletal structures is greatly influenced by the behaviour of beamto- column connections, where patented designs have led to a wide range of types with differing structural quantities. The behaviour of beam-to-column connections plays an important role in the analysis and design of framed structures. This paper presents an overview of the influence of connection behaviour on structural stability, in the in-plane (bending) mode of sway. A computer-based method is presented for geometrically nonlinear plane frames with semi-rigid connections accounting for shear deformations. The analytical procedure employs transcendental modified stability functions to model the effect of axial force on the stiffness of members. The member stiffness matrix were found. The critical load has been searched as a suitable load parameter for the loss of stability of the system. Several examples are presented to demonstrate the validity of the analysis procedure. The method is readily implemented on a computer using matrix structural analysis techniques and is applicable for the efficient nonlinear analysis of frameworks. Combined with a parametric column effective length study, connection and frame stiffness are used to propose a method for the analysis of semi-rigid frames where column effective lengths are greatly reduced and second order (deflection induced) bending moments in the column may be distributed via the connectors to the beams, leading to significant economies. | ||
| Key Words | ||
| stability, nonlinear analysis; semi-rigid connection; effective length; shear deformation | ||
| Address | ||
| Halil Gorgun: Department of Civil Engineering, Dicle University, 21280, Diyarbakir, Turkey | ||