PROGRESSIVE COLLAPSE SUSCEPTIBILITY OF A LONG SPAN SUSPENSION BRIDGE Progressive Collapse and Structural Robustness: An International Perspective Clay J. Naito, Ph.D., P.E., Associate Professor and Associate Chair Konstantinos Gkoumas, Ph.D., P.E., Associate Researcher Pierluigi Olmati 1 P.E., Ph.D. Student Email: [email protected]t Luisa Giuliani 2 Ph.D., Assistant Professor Email: [email protected]1 Sapienza University of Rome 2 Technical University of Denmark (DTU) Olmati P , Giuliani L Sapienza University of Rome & DTU [email protected]www.francobontempi.org
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PROGRESSIVE COLLAPSE SUSCEPTIBILITY OF A LONG SPAN SUSPENSION BRIDGE
Progressive Collapse and Structural Robustness: An International PerspectiveClay J. Naito, Ph.D., P.E., Associate Professor and Associate ChairKonstantinos Gkoumas, Ph.D., P.E., Associate Researcher
General view of Ronan Point prior to demolition/photo 1987/photographer
M Glendinning
Features:- apartments building;- built between 1966 and 1968;- 64 m tall with 22 story;- walls, floors, and staircases were made of precast
concrete;- each floor was supported directly by the walls in
the lower stories, (bearing walls system).
References: NISTIR 7396: Best practices for reducing the potential for progressive collapse in buildings. Washington DC: National Institute of Standards and Technology (NIST), 2007.
Olmati P, Giuliani LSapienza University of Rome & DTU
References: NISTIR 7396: Best practices for reducing the potential for progressive collapse in buildings. Washington DC: National Institute of Standards and Technology (NIST), 2007.
Features:- apartments building;- precast concrete wall and floor components
were the structural bearing system;- ductile detailing and effective ties between the
precast components.
Olmati P, Giuliani LSapienza University of Rome & DTU
Definitions:1- "Progressive collapse is defined as the spread of an initial local failure from element to element resulting, eventually, in the collapse of an entire structure or a disproportionate large part of it." (ASCE 7-05 2005)2- "A progressive collapse is a situation where local failure of a primary structural component leads to the collapse of adjoining members which, in turn, leads to additional collapse. Hence, the total collapse is disproportionate to the original cause." (GSA 2003)3- "Progressive collapse. A chain reaction failure of building members to an extent disproportionate to the original localized damage." (UFC 4-010-01 2003)
References: (ASCE 7-05 2005): "Minimum design loads for buildings and other structures." American Society of Civil Engineers (ASCE).(GSA 2003): "Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects." General Services Administration (GSA).(UFC 4-010-01 2003): "DoD minimum antiterrorism standards for buildings." Department of Defense (DoD).
Olmati P, Giuliani LSapienza University of Rome & DTU
Progressive Collapse and Structural Robustness: An International PerspectiveClay J. Naito, Ph.D., P.E., Associate Professor and Associate ChairKonstantinos Gkoumas, Ph.D., P.E., Associate Researcher
Olmati P, Giuliani LSapienza University of Rome & DTU