3D numerical assessment of the progressive collapse resistance of a seismic-resistant steel building with post-tensioned beam-column connections

Christoforos Dimopoulos, Fabio Freddi, Theodore Karavasilis, George Vasdravellis

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Abstract

This paper presents the numerical assessment of the progressive collapse resistance of a
seismic-resistant steel building with post-tensioned beam-column connections. The
numerical simulations are carried out in 3D under a loss of column scenario. The 3D model
considers the effect of the composite slab, where composite beams and their shear
connectors are modeled with a combination of shell, beam and nonlinear connector
elements. All the beam-column and beam-to-beam connections are modeled using
nonlinear connector elements with appropriate failure criteria. Moreover, the steel frame
for which a column is removed is modelled in full detail with the aid of 3D solid elements
to accurately capture its local and global nonlinear behavior. Nonlinear static analyses are
carried out to identify the failure modes of the building under a sudden loss of column
scenario and investigate the effect of the floor slab on the overall progressive collapse
resistance.
Original languageEnglish
Number of pages8
Publication statusPublished - 2017
Event9th Greek National Steel Structures Conference - Larissa, Greece
Duration: 5 Oct 20177 Oct 2017

Conference

Conference9th Greek National Steel Structures Conference
CountryGreece
CityLarissa
Period5/10/177/10/17

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    Dimopoulos, C., Freddi, F., Karavasilis, T., & Vasdravellis, G. (2017). 3D numerical assessment of the progressive collapse resistance of a seismic-resistant steel building with post-tensioned beam-column connections. Paper presented at 9th Greek National Steel Structures Conference, Larissa, Greece.