Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Abnormal Loads and Disproportionate Collapse: Risk Mitigation Strategies
A disproportionate (or progressive) collapse of a building or other structure is one that initiates from local damage and subsequently propagates to encompass a major portion of the facility. Current concerns with such collapses stem from changes in building practices and sociopolitical challenges that have highlighted the importance of hazards that historically either have not been viewed as significant (explosions or detonations) or have been dealt with through deemed-to-satisfy clauses rather than through formal structural calculations (severe fires). Practical strategies for mitigating the risk of disproportionate collapse of buildings can be evaluated using principles of structural reliability and probabilistic risk assessment, supported by advanced computational tools. This paper summarizes a number of these strategies, critically appraises major design issues — scenario-based vs non threat-specific analysis; direct vs indirect design; alternative path vs specific local resistance — and discusses prospects for implementation of criteria for collapse mitigation in ASCE Standard 7.
Abnormal Loads and Disproportionate Collapse: Risk Mitigation Strategies
A disproportionate (or progressive) collapse of a building or other structure is one that initiates from local damage and subsequently propagates to encompass a major portion of the facility. Current concerns with such collapses stem from changes in building practices and sociopolitical challenges that have highlighted the importance of hazards that historically either have not been viewed as significant (explosions or detonations) or have been dealt with through deemed-to-satisfy clauses rather than through formal structural calculations (severe fires). Practical strategies for mitigating the risk of disproportionate collapse of buildings can be evaluated using principles of structural reliability and probabilistic risk assessment, supported by advanced computational tools. This paper summarizes a number of these strategies, critically appraises major design issues — scenario-based vs non threat-specific analysis; direct vs indirect design; alternative path vs specific local resistance — and discusses prospects for implementation of criteria for collapse mitigation in ASCE Standard 7.
Abnormal Loads and Disproportionate Collapse: Risk Mitigation Strategies
Ellingwood, Bruce R. (Autor:in)
Structures Congress 2009 ; 2009 ; Austin, Texas, United States
Structures Congress 2009 ; 1-8
29.04.2009
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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