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Published (Version of record)CC BY V4.0, Open Access
Published (Version of record)CC BY V4.0, Open
Journal article
Sustainable approaches to improve the resilience of modular buildings under wind loads
Journal of constructional steel research, Vol.211, 108124
12/2023
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Abstract
Prefabricated volumetric modular building (PVMB) technology is an emerging technology that can make the construction industry walk towards sustainability by reducing the emission of pollutants leading to various environmental impacts. However, the knowledge of the lateral behaviour of PVMBs is limited. This could lead to significant building failure in future, as the climate continues to change, it is expected that building performance will be affected. Thus, this research aims to study the resilience of PVMBs under changing wind loads and identify the most sustainable approach to improve resilience. A 25-storey case-study building was analysed with modifications added to increase its lateral stiffness. Three methods of increasing the resilience were used: (1) increasing the size of structural elements; (2) increasing the inter-component connection stiffness; and (3) introducing discrete diaphragms. The results showed that using chevron bracings of the same section size as Xbracings can maintain the same resilience against the wind while decreasing total bracing steel volume by 32%. Among the analysis cases, structures with concrete cores (CC) have the highest stiffness to withstand the increased wind loads. The building with CC at the centre can withstand a 100% higher serviceability wind speed (i.e. 74 ms-1) than building without modifications (i.e. 37 ms-1). At the same time, the building with CC on either side can withstand a 45% higher wind speed than building without modifications. Further considering the sustainability aspects, the environmental effects of global warming can be reduced by about 160% when fully modular buildings are constructed with recycled steel.
Details
- Title
- Sustainable approaches to improve the resilience of modular buildings under wind loads
- Creators
- Thisari Munmulla - RMIT UniversitySatheeskumar Navaratnam - RMIT UniversityH. D. Hidallana-Gamage - University of MoratuwaQuddus Tushar - RMIT UniversityThusiyanthan Ponnampalam - Ronnie & Koh Consultants Pte Ltd (Singapore)Guomin Zhang - RMIT UniversityM. T. R. Jayasinghe - University of Moratuwa
- Publication Details
- Journal of constructional steel research, Vol.211, 108124
- Publisher
- Elsevier
- Number of pages
- 20
- Identifiers
- 991013186811502368
- Copyright
- © 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article