Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method
The Alternate Load Path (ALP) is a useful method that has generated a considerable recent research interest for the assessment of progressive collapse. The outcome of the ALP analysis can be assessed either using the force-based approach or the energy-based approach. The Unified Facilities Criteria...
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Online Access: | https://doi.org/10.1051/matecconf/201925802012 |
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doaj-8d87a6bb9d174136aafc100ababa1fd42021-03-02T10:31:11ZengEDP SciencesMATEC Web of Conferences2261-236X2019-01-012580201210.1051/matecconf/201925802012matecconf_scescm2019_02012Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) methodAsnawi Subki Nur Ezzaryn0Mansor Hazrina1Sahol Hamid Yazmin2Parke Gerard3Universiti Teknologi Mara (UiTM)Universiti Teknologi Mara (UiTM)Universiti Teknologi Mara (UiTM)University of SurreyThe Alternate Load Path (ALP) is a useful method that has generated a considerable recent research interest for the assessment of progressive collapse. The outcome of the ALP analysis can be assessed either using the force-based approach or the energy-based approach. The Unified Facilities Criteria (UFC- 4- 023-03) of progressive collapse guideline - have outlined that the force-based approach can either be analysed using static or dynamic analysis. The force-based approach using static analysis is preferable as it does not require a high level of skill and experience to operate the software plus no effort is required in scrutinising the validity of the analysis results output. However, utilising the static approach will eliminate the inertial effect in capturing the actual dynamic response of the collapsed structure. In recent years, the development of the energy-based progressive collapse assessment is attracting widespread interest from researchers in the field; as the approach can produce a similar structural response with the force-based dynamic analysis by only using static analysis. Most of the current energy-based progressive collapse assessments are developed following the requirements which are given in the progressive collapse guidelines provided by the Unified Facilities Criteria. However, little attention is given to the development of the energy-based approach using the Eurocode standards as a base guideline. This article highlights the merits of utilising the energy-based approach against the force-based approach for a collapsed structure and explains the collapse mechanism of a steel frame in the perspective of the energy concept. The state of the art of energy-based progressive collapse assessment for a structural steel frame is reviewed. The comprehensive review will include insights on the development of the energy-based method, assumptions, limitations, acceptance criterion and its applicability with the European standards. Finally, potential research gaps are discussed herein.https://doi.org/10.1051/matecconf/201925802012 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Asnawi Subki Nur Ezzaryn Mansor Hazrina Sahol Hamid Yazmin Parke Gerard |
spellingShingle |
Asnawi Subki Nur Ezzaryn Mansor Hazrina Sahol Hamid Yazmin Parke Gerard Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method MATEC Web of Conferences |
author_facet |
Asnawi Subki Nur Ezzaryn Mansor Hazrina Sahol Hamid Yazmin Parke Gerard |
author_sort |
Asnawi Subki Nur Ezzaryn |
title |
Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method |
title_short |
Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method |
title_full |
Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method |
title_fullStr |
Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method |
title_full_unstemmed |
Progressive Collapse Assessment: A review of the current energy-based Alternate Load Path (ALP) method |
title_sort |
progressive collapse assessment: a review of the current energy-based alternate load path (alp) method |
publisher |
EDP Sciences |
series |
MATEC Web of Conferences |
issn |
2261-236X |
publishDate |
2019-01-01 |
description |
The Alternate Load Path (ALP) is a useful method that has generated a considerable recent research interest for the assessment of progressive collapse. The outcome of the ALP analysis can be assessed either using the force-based approach or the energy-based approach. The Unified Facilities Criteria (UFC- 4- 023-03) of progressive collapse guideline - have outlined that the force-based approach can either be analysed using static or dynamic analysis. The force-based approach using static analysis is preferable as it does not require a high level of skill and experience to operate the software plus no effort is required in scrutinising the validity of the analysis results output. However, utilising the static approach will eliminate the inertial effect in capturing the actual dynamic response of the collapsed structure. In recent years, the development of the energy-based progressive collapse assessment is attracting widespread interest from researchers in the field; as the approach can produce a similar structural response with the force-based dynamic analysis by only using static analysis. Most of the current energy-based progressive collapse assessments are developed following the requirements which are given in the progressive collapse guidelines provided by the Unified Facilities Criteria. However, little attention is given to the development of the energy-based approach using the Eurocode standards as a base guideline. This article highlights the merits of utilising the energy-based approach against the force-based approach for a collapsed structure and explains the collapse mechanism of a steel frame in the perspective of the energy concept. The state of the art of energy-based progressive collapse assessment for a structural steel frame is reviewed. The comprehensive review will include insights on the development of the energy-based method, assumptions, limitations, acceptance criterion and its applicability with the European standards. Finally, potential research gaps are discussed herein. |
url |
https://doi.org/10.1051/matecconf/201925802012 |
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