Maximum deflection of asymmetric wall-frame buildings under horizontal load

Zalka, Karoly A

doi:10.3311/ppci.7084

Cited by 15 publications

(13 citation statements)

References 9 publications

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“…Approximate formulas were provided to take into account the interaction between translational and torsional modes for non-symmetrical buildings. The same author proposed approximated closed-form solutions for studying tall buildings subjected to horizontal loads for both symmetrical [9] and nonsymmetrical [10] systems, in 2009 and 2014 respectively.…”

Section: Introductionmentioning

confidence: 99%

“…10) In view of the expressions of the kinetic energy, given by Equation(8), and the elastic energy, given by Equation (9), the variation of the difference ( ) TU  − , according to the Hamilton's principle, as in Equation (7), and integrating by parts, leads to the following result: Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 25 February 2020 doi:10.20944/preprints202002.0371.v1…”

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confidence: 99%

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An Equivalent Non-uniform Beam-like Model for Dynamic Analysis of Multi-storey Irregular Buildings

Greco¹,

Fiore²,

Occhipinti³

et al. 2020

Preprint

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Dynamic analyses and seismic assessments of multi-storey buildings at urban level require large-scale simulations and computational procedures based on simplified but accurate numerical models. At this aim the present paper propos-es an equivalent non-uniform beam-like model, suitable for the dynamic analysis of buildings with asymmetric plan and non-uniform vertical distribution of mass and stiffness. The equations of motion of this beam-like model, which pre-sents only shear and torsional deformability, are derived through the application of Hamilton’s principle. The linear dy-namic behaviour is evaluated by discretizing the continuous non-uniform model according to a Rayleigh-Ritz approach based on a suitable number of modal shapes of the uniform shear-torsional beam. In spite of its simplicity, the model is able to reproduce the dynamic behaviour of low- and mid-rise buildings with a significant reduction of the computa-tional burden with respect to that required by more general models. The efficacy of the proposed approach has been tested, by means of comparisons with linear FEM simulations, on three multi-storey buildings characterized by different irregularities. The satisfactory agreement, in terms of natural frequencies, modes of vibration and seismic response, proves the capability of the proposed approach to reproduce the dynamic response of complex spatial multi storey frames.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

An Equivalent Non-uniform Beam-like Model for Dynamic Analysis of Multi-storey Irregular Buildings

Greco¹,

Fiore²,

Occhipinti³

et al. 2020

Preprint

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“…The simplified beam-like approaches firstly proposed in the literature make usually reference to homogeneous elements with uniform stiffness distribution (Chajes, et al, 1993). Some contributions take into account uniform beams with eccentricity between the centers of stiffness and mass (Zalka, 2014;Potzta & Kollár, 2003;Piccardo, et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Inhomogeneous beam-like models for the dynamic analysis of multi-storey buildings

Greco¹,

Fiore²,

Caddemi³

et al. 2019

Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications

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The present paper proposes a simplified inhomogeneous beam-like model, suitable for the dynamic analysis of buildings with non-uniform vertical distribution of mass and stiffness. Asymmetric distribution of stiffness within the floors, which leads to torsional effects, can be also taken into account. The equations of motion of the proposed spatial asymmetric beam-like model are derived through the application of Hamilton's principle. The linear dynamic behaviour of the inhomogeneous beamlike element is then evaluated by discretizing the continuous model according to a Ra yleigh-Ritz approach based on a suitable number of modal shapes of uniform shear torsional beam. The comparison of the results with those obtained by means of three-dimensional FEM models shows the efficacy of the proposed approach.

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“…Zalka presented practical results in [44][45][46] and nearly in [47][48][49], which can determine the maximum deflection of multi-story buildings. These results used the continuum method and gave a useful general practical application.…”

Section: Introductionmentioning

confidence: 99%

Create a Rigid and Safe Grid-Like Structure

Kovács¹,

Kem²

2019

Period. Polytech. Civil Eng.

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The failure of the building is not the consequence of the not strong enough elements of the structure in the majority of the cases, but the bracing elements inappropriate places. We consider a 4 × 4 and 4 × 5 braced frames to understand the connections between the lateral stiffnesses, and bracing graph to achieve the stiffest and the more safety design. In our consideration, we study those relationships that based on our frame using their finite element analyses and some new result in optimizations of structural design.We offer some conclusions, including perspectives and future developments in the rigidity of scaffolds and tall building as symmetrical and grid-like bar-joint frameworks. Keywordsbraced scaffolding, n-story building, the safety of the structure, kinematics of braced structure

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Maximum deflection of asymmetric wall-frame buildings under horizontal load

Abstract: Abstract

Cited by 15 publications

References 9 publications

An Equivalent Non-uniform Beam-like Model for Dynamic Analysis of Multi-storey Irregular Buildings

An Equivalent Non-uniform Beam-like Model for Dynamic Analysis of Multi-storey Irregular Buildings

Inhomogeneous beam-like models for the dynamic analysis of multi-storey buildings

Create a Rigid and Safe Grid-Like Structure

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