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Dynamic punching assesment of edge columns after sudden corner column removal

Garzón-Roca, Julio, Sagaseta, Juan, Buitrago, Manuel and Adam, José M. (2020) Dynamic punching assesment of edge columns after sudden corner column removal ACI Structural Journal.

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Abstract

A dynamic punching shear model is presented for general sudden column removal cases which was validated against data from a purpose-built full-scale two-storey reinforced concrete building subjected to a sudden corner column removal. Such analyses are generally performed in structural robustness or integrity design against progressive collapse and several simplifications are generally adopted to avoid complex dynamic nonlinear analyses. These simplifications are generally on the conservative side and punching can be predicted incorrectly. The test results presented showed that Vierendeel action at small deformations was predominant after column removal. The dynamic amplification of the deformations and shear was significant although punching did not occur as predicted by the model. It was found that in general cases punching around edge columns after sudden corner column removal was not critical using design accidental load combinations, although a dynamic punching check is still needed especially for higher live loads and low flexural and punching reinforcement ratios.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
NameEmailORCID
Garzón-Roca, Julio
Sagaseta, JuanJ.Sagaseta@surrey.ac.uk
Buitrago, Manuel
Adam, José M.
Date : 2020
Funders : Engineering and Physical Sciences Research Council (EPSRC)
Copyright Disclaimer : © Copyright 2020, American Concrete Institute. All rights reserved, including the making of copies by any means, including but not limited to downloading of HTML files, or by electronic, photo-duplicating, or other mechanical device, printed, written or oral, or recording for sound or visual reproduction for use in any knowledge or retrieval system or device, or recording for sound unless permission is obtained from the copyright proprietors.
Uncontrolled Keywords : Dynamic punching shear; Structural integrity; Progressive collapse; Alternative load path; Flat slab; Column removal
Related URLs :
Depositing User : Clive Harris
Date Deposited : 02 Oct 2020 10:35
Last Modified : 02 Oct 2020 10:35
URI: http://epubs.surrey.ac.uk/id/eprint/858630

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