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Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure

The progressive collapse of the structure caused by the partial failure of the structure will cause severe consequences and massive losses, and structural progressive collapse resistance has always been a hot topic of current research. In order to study the progressive collapse mechanism of base-iso...

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Main Authors: Bao, Chao, Zhang, Yuhang, Lv, Dahai, Wang, Huxiang, Ma, Xiaotong, Cao, Jixing, Lim, Kar Sing
Format: Article
Language:English
Published: Institute for Ionics 2022
Subjects:
T Technology (General)
TA Engineering (General). Civil engineering (General)
Online Access:http://umpir.ump.edu.my/id/eprint/42759/1/Study%20on%20mechanism%20and%20influential%20factors%20of%20progressive%20collapse%20resistance.pdf
http://umpir.ump.edu.my/id/eprint/42759/
https://doi.org/10.1186/s44147-022-00157-6
https://doi.org/10.1186/s44147-022-00157-6
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spelling my.ump.umpir.427592025-01-07T04:05:55Z http://umpir.ump.edu.my/id/eprint/42759/ Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure Bao, Chao Zhang, Yuhang Lv, Dahai Wang, Huxiang Ma, Xiaotong Cao, Jixing Lim, Kar Sing T Technology (General) TA Engineering (General). Civil engineering (General) The progressive collapse of the structure caused by the partial failure of the structure will cause severe consequences and massive losses, and structural progressive collapse resistance has always been a hot topic of current research. In order to study the progressive collapse mechanism of base-isolated structures, the test study and numerical simulation of the base-isolated structures were carried out based on the vertical Pushover method and analysis of the variation rule of the capacity of the remaining structure and influence mechanism. The isolation bearing failure position, the size of the beam of the seismic isolation layer, the type of the isolation bearing, and the horizontal stiffness of the seismic isolation layer on the capacity of the remaining structure were compared and analyzed. The results show that the non-uniformity of the beams and the concentrated loading at the nodes were easy to form a linear catenary mechanism, resulting in more severe beam end damage than mid-span damage. In the case of side isolation bearing failure, due to the lack of sufficient lateral restraint, the capacity was significantly lower than other conditions, which were more likely to cause partly collapse. Therefore, setting more transfer paths to improve the structure’s resistance to progressive collapses was necessary. Increasing the size of the beam of the seismic isolation layer could improve the capacity of the remaining structure of the alternate load path in the base-isolated structure. The changes in the horizontal stiffness of the seismic isolation layer and the type of the isolation bearing have little effect on the progressive collapse resistance capacity of the remaining structure. Institute for Ionics 2022-12 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/42759/1/Study%20on%20mechanism%20and%20influential%20factors%20of%20progressive%20collapse%20resistance.pdf Bao, Chao and Zhang, Yuhang and Lv, Dahai and Wang, Huxiang and Ma, Xiaotong and Cao, Jixing and Lim, Kar Sing (2022) Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure. Journal of Engineering and Applied Science, 69 (111). pp. 1-23. ISSN 1110-1903. (Published) https://doi.org/10.1186/s44147-022-00157-6 https://doi.org/10.1186/s44147-022-00157-6
institution Universiti Malaysia Pahang Al-Sultan Abdullah
building UMPSA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang Al-Sultan Abdullah
content_source UMPSA Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic T Technology (General)
TA Engineering (General). Civil engineering (General)
spellingShingle T Technology (General)
TA Engineering (General). Civil engineering (General)
Bao, Chao
Zhang, Yuhang
Lv, Dahai
Wang, Huxiang
Ma, Xiaotong
Cao, Jixing
Lim, Kar Sing
Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
description The progressive collapse of the structure caused by the partial failure of the structure will cause severe consequences and massive losses, and structural progressive collapse resistance has always been a hot topic of current research. In order to study the progressive collapse mechanism of base-isolated structures, the test study and numerical simulation of the base-isolated structures were carried out based on the vertical Pushover method and analysis of the variation rule of the capacity of the remaining structure and influence mechanism. The isolation bearing failure position, the size of the beam of the seismic isolation layer, the type of the isolation bearing, and the horizontal stiffness of the seismic isolation layer on the capacity of the remaining structure were compared and analyzed. The results show that the non-uniformity of the beams and the concentrated loading at the nodes were easy to form a linear catenary mechanism, resulting in more severe beam end damage than mid-span damage. In the case of side isolation bearing failure, due to the lack of sufficient lateral restraint, the capacity was significantly lower than other conditions, which were more likely to cause partly collapse. Therefore, setting more transfer paths to improve the structure’s resistance to progressive collapses was necessary. Increasing the size of the beam of the seismic isolation layer could improve the capacity of the remaining structure of the alternate load path in the base-isolated structure. The changes in the horizontal stiffness of the seismic isolation layer and the type of the isolation bearing have little effect on the progressive collapse resistance capacity of the remaining structure.
format Article
author Bao, Chao
Zhang, Yuhang
Lv, Dahai
Wang, Huxiang
Ma, Xiaotong
Cao, Jixing
Lim, Kar Sing
author_facet Bao, Chao
Zhang, Yuhang
Lv, Dahai
Wang, Huxiang
Ma, Xiaotong
Cao, Jixing
Lim, Kar Sing
author_sort Bao, Chao
title Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
title_short Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
title_full Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
title_fullStr Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
title_full_unstemmed Study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
title_sort study on mechanism and influential factors of progressive collapse resistance of base-isolated structure
publisher Institute for Ionics
publishDate 2022
url http://umpir.ump.edu.my/id/eprint/42759/1/Study%20on%20mechanism%20and%20influential%20factors%20of%20progressive%20collapse%20resistance.pdf
http://umpir.ump.edu.my/id/eprint/42759/
https://doi.org/10.1186/s44147-022-00157-6
https://doi.org/10.1186/s44147-022-00157-6
_version_ 1822924883013664768
score 13.235362

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