... a constant axial load, corresponding to the effect of gravity loads plus seismic overturning,... more ... a constant axial load, corresponding to the effect of gravity loads plus seismic overturning, was ...connections either tested up to failure or taken off from actual steel MRF buildings ... Improvement of the cyclic performance was observed in the tests and maximum plastic rotations of ...
ABSTRACTStructural configurations best addressing the traditional requirements of strength and st... more ABSTRACTStructural configurations best addressing the traditional requirements of strength and stiffness for tall buildings are the ones employing the tube concept, whose efficiency, however, is strictly related to the involved shear‐resisting mechanism. In this perspective, diagrid structures – the latest mutation of tube structures – show an extraordinary efficiency, related to the adopted geometrical pattern: thanks to the triangle tessellation of the façades, internal axial forces are largely prevalent in the structural members, thus shear lag effects and racking deformations are minimized. Being also adaptable to whatever surface, diagrid is becoming the most used structural solution for tall buildings of complex form. In this paper some specific design issues for diagrid structures are identified, namely: the relative importance of strength and stiffness design criteria, as well as to the need of secondary bracing systems for counteracting the inter‐module flexibility effects. Simplified procedure for dealing with such issues are proposed and design implications are discussed.
International Journal of Architectural Heritage, Aug 27, 2008
... DOI: 10.1080/15583050802063741 Giovanni Cuomo a , Antonio De Luca ... The FB church buildings... more ... DOI: 10.1080/15583050802063741 Giovanni Cuomo a , Antonio De Luca ... The FB church buildings have been widely studied in order to grasp their seismic behavior, as reported in (Brandonisio et al., 20072. Brandonisio, G., De Luca, A., de Lucia, R., Mele, E. and Santaniello, R ...
... a constant axial load, corresponding to the effect of gravity loads plus seismic overturning,... more ... a constant axial load, corresponding to the effect of gravity loads plus seismic overturning, was ...connections either tested up to failure or taken off from actual steel MRF buildings ... Improvement of the cyclic performance was observed in the tests and maximum plastic rotations of ...
ABSTRACTStructural configurations best addressing the traditional requirements of strength and st... more ABSTRACTStructural configurations best addressing the traditional requirements of strength and stiffness for tall buildings are the ones employing the tube concept, whose efficiency, however, is strictly related to the involved shear‐resisting mechanism. In this perspective, diagrid structures – the latest mutation of tube structures – show an extraordinary efficiency, related to the adopted geometrical pattern: thanks to the triangle tessellation of the façades, internal axial forces are largely prevalent in the structural members, thus shear lag effects and racking deformations are minimized. Being also adaptable to whatever surface, diagrid is becoming the most used structural solution for tall buildings of complex form. In this paper some specific design issues for diagrid structures are identified, namely: the relative importance of strength and stiffness design criteria, as well as to the need of secondary bracing systems for counteracting the inter‐module flexibility effects. Simplified procedure for dealing with such issues are proposed and design implications are discussed.
International Journal of Architectural Heritage, Aug 27, 2008
... DOI: 10.1080/15583050802063741 Giovanni Cuomo a , Antonio De Luca ... The FB church buildings... more ... DOI: 10.1080/15583050802063741 Giovanni Cuomo a , Antonio De Luca ... The FB church buildings have been widely studied in order to grasp their seismic behavior, as reported in (Brandonisio et al., 20072. Brandonisio, G., De Luca, A., de Lucia, R., Mele, E. and Santaniello, R ...
In this paper, a first insight into the role that non-conventional structural patterns might play... more In this paper, a first insight into the role that non-conventional structural patterns might play in the design of tall buildings is presented. The idea is to explore the mechanical properties of selected non-conventional structural patterns, in the form of both regular (Hexagrid) and irregular (Voronoi tessellation inspired) arrays, in order to assess their actual applicability in tall building design. For this aim, the concept of Representative Volume Element (RVE) and a classical homogenization-based micromechanical approach are employed for identifying the pattern units and deriving the relevant generalized stress-strain relationships. In the case of irregular patterns based on Voronoi diagrams, obtained by perturbing prescribed key geometrical features of hexagrids, a statistically significant sample of RVEs is defined on the basis of sensitivity analyses, and the related mechanical characterization is developed in statistical terms. Finally, a preliminary stiffness-based design procedure is proposed and applied to a tall building model with Voronoi exoskeleton. In conclusion, a discussion on the effectiveness of the design procedure and on the structural efficiency of the Voronoi patterns for tall buildings is presented.
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