Are the frail designed to fail? Assessing the collapse risk of existing structures
The catastrophic after-effects of the historical collapse events have received considerable attention from government agencies, research communities, and practical engineers on the aspect of the evaluation of the risk of progressive collapse of buildings. In the recent decade, numerous studies ha...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Conference Paper |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/99725 http://hdl.handle.net/10220/24049 |
| _version_ | 1826117149510336512 |
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| author | Li, Bing Qian, Kai |
| author2 | School of Civil and Environmental Engineering |
| author_facet | School of Civil and Environmental Engineering Li, Bing Qian, Kai |
| author_sort | Li, Bing |
| collection | NTU |
| description | The catastrophic after-effects of the historical collapse events have received
considerable attention from government agencies, research communities, and practical
engineers on the aspect of the evaluation of the risk of progressive collapse of buildings.
In the recent decade, numerous studies have been conducted to answer the question: are
the frail designed to fail? In this paper, the research outcomes from experimental and
analytical studies are discussed in an attempt to answer above critical question, which
mostly concerned by building owners or decision makers. The findings from previous
studies had indicated that the buildings, which had a regular layout, moderate span, and
cast-in-place construction method, may have lower collapse risk. This is mainly due to the
slab and infill walls providing additional stiffness and strength to resist sudden columns
removal. Moreover, considerable second load carrying mechanisms, such as catenary
action, arch action, and compressive or tensile membrane actions could develop in beams
or slabs, which further reduces the possibility of progressive collapse. Furthermore, the
recent dynamic tests have revealed that the dynamic effects were not as large as the value
proposed by provision of guidelines. However, for structures with irregular layout, which
is very popular in nonseismic zones, such as Singapore or Hong Kong, may undergo a much higher likelihood of collapse. Moreover, the high vulnerability of newly designed precast structures with extreme large design span could not be ignored. It should be further emphasized that multi-hazards due to terrorist attack, which was ignored in existing design guidelines, may lead to the collapse of the buildings brining about tragic consequence. |
| first_indexed | 2024-10-01T04:22:57Z |
| format | Conference Paper |
| id | ntu-10356/99725 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:22:57Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/997252020-03-07T11:43:28Z Are the frail designed to fail? Assessing the collapse risk of existing structures Li, Bing Qian, Kai School of Civil and Environmental Engineering Structures Congress 2014 DRNTU::Engineering::Civil engineering::Structures and design The catastrophic after-effects of the historical collapse events have received considerable attention from government agencies, research communities, and practical engineers on the aspect of the evaluation of the risk of progressive collapse of buildings. In the recent decade, numerous studies have been conducted to answer the question: are the frail designed to fail? In this paper, the research outcomes from experimental and analytical studies are discussed in an attempt to answer above critical question, which mostly concerned by building owners or decision makers. The findings from previous studies had indicated that the buildings, which had a regular layout, moderate span, and cast-in-place construction method, may have lower collapse risk. This is mainly due to the slab and infill walls providing additional stiffness and strength to resist sudden columns removal. Moreover, considerable second load carrying mechanisms, such as catenary action, arch action, and compressive or tensile membrane actions could develop in beams or slabs, which further reduces the possibility of progressive collapse. Furthermore, the recent dynamic tests have revealed that the dynamic effects were not as large as the value proposed by provision of guidelines. However, for structures with irregular layout, which is very popular in nonseismic zones, such as Singapore or Hong Kong, may undergo a much higher likelihood of collapse. Moreover, the high vulnerability of newly designed precast structures with extreme large design span could not be ignored. It should be further emphasized that multi-hazards due to terrorist attack, which was ignored in existing design guidelines, may lead to the collapse of the buildings brining about tragic consequence. 2014-10-17T01:16:16Z 2019-12-06T20:10:47Z 2014-10-17T01:16:16Z 2019-12-06T20:10:47Z 2014 2014 Conference Paper Li, B., & Qian, K. (2014). Are the frail designed to fail? Assessing the collapse risk of existing structures. Structures congress 2014, 857-867. https://hdl.handle.net/10356/99725 http://hdl.handle.net/10220/24049 10.1061/9780784413357.076 en © 2014 American Society of Civil Engineers. 11 p. |
| spellingShingle | DRNTU::Engineering::Civil engineering::Structures and design Li, Bing Qian, Kai Are the frail designed to fail? Assessing the collapse risk of existing structures |
| title | Are the frail designed to fail? Assessing the collapse risk of existing structures |
| title_full | Are the frail designed to fail? Assessing the collapse risk of existing structures |
| title_fullStr | Are the frail designed to fail? Assessing the collapse risk of existing structures |
| title_full_unstemmed | Are the frail designed to fail? Assessing the collapse risk of existing structures |
| title_short | Are the frail designed to fail? Assessing the collapse risk of existing structures |
| title_sort | are the frail designed to fail assessing the collapse risk of existing structures |
| topic | DRNTU::Engineering::Civil engineering::Structures and design |
| url | https://hdl.handle.net/10356/99725 http://hdl.handle.net/10220/24049 |
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