7/27/2019 Abstract, Design of Slender Steel Shear Panels, A Numerical Study

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Design of slender steel shear panels: a numerical study

A. Formisano*, G. De Matteis

, M. Maruzzelli

*, F.M. Mazzolani

*

*University of Naples Federico II - Department of Structural Analysis and Design

P.le Tecchio, 80 80125 Naples (Italy)

antoform@unina.it; mcmaruz@fastwebnet.it; fmm@unina.it

Universit of Chieti/Pescara G. dAnnunzio - PRICOS

V.le Pindaro, 42 65127 Pescara (Italy)

demattei@unina.it

ABSTRACT

In the framework of passive control devices for the seismic protection of new and existing buildings,in the last years large attention has been focused on shear wall systems. They are based on the use of

a series of steel plates which realise a stiffened central nucleus able to absorb the horizontal actioneffect. These devices, which are obtained by inserting a steel panel within an external reaction steel

frame, have a low realization cost and high speedy of erection. They can be classified in two main

categories:- panels acting on the stiffness and the strength of the main structure;

- panels having a dissipative function.The Steel Plate Shear Walls (SPSW), belonging to the first typology, are characterised by slender

steel plates. They have been largely used in the last years in North America and Japan as an effective

device against seismic actions.The behaviour of such system is strongly conditioned by buckling phenomena occurring at the early

stages of the loading process. Such phenomena may have a significant influence also on the ultimatestrength of the system, despite the development of stable post-critical behaviour due to the well

known tension field mechanism. The theoretical and numerical studies on the behaviour of these

devices confirm the reliability of the structural system when specific geometrical ratios of the panelare respected, i.e. for panels having b/dratio raging from 0.8 to 2.5 [1]. In this paper, the theoretical

behaviour of steel panels in shear, based on existing simplified methodologies (strip model theory) [2]is analysed and then compared with the results obtained by an extensive numerical study carried out

using sophisticate finite element models (implemented in the ABAQUS non linear code). Thecomparison between theoretical and numerical results has been developed with reference to different

values of the late thickness and varying the b/d ratio. In addition, the influence of intermediatestiffeners is analysed. In the whole the obtained results provide useful information for the correctdesign of slender steel plates in shear to be used as stiffening devices in new and existing framed

structures.

References

[1] Canadian Standards Association (CSA), Limit states design of steel structures. CAN/CSA S16-

01, Canadian Standards Association, Willowdale, Ont., Canada, 2001.

[2] S. Sabouri-Ghomi, C. Ventura, M.H.K. Kharrazi, Shear analysis and design of ductile steel plate

walls. Proc. of the 4th International Conference STESSA 2003, Behaviour of Steel Structures inSeismic Areas, Naples, 9-12 June, 2003.

III European Conference on Computational MechanicsSolids, Structures and Coupled Problems in EngineeringC.A. Mota Soares et al. (eds.)Lisbon, Portugal, 58 June 2006

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