气候变化领域集成服务门户(CCPortal): Cyclonic wind loads and structural mitigation measures - vulnerability assessment of traditional housings in Odisha

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DOI	10.1007/s12040-024-02255-w
	Cyclonic wind loads and structural mitigation measures - vulnerability assessment of traditional housings in Odisha
	Jena, Siddharth; Cao, Shuyang; Gairola, Ajay
发表日期	2024
ISSN	2347-4327
EISSN	0973-774X
起始页码	133
结束页码	2
卷号	133 期号:2
英文摘要	As global temperatures rise in response to global warming and climate change, the sea-surface temperature of Bay of Bengal shows a rise of 1-2.5oC during the months of May-August. This has led to a change in the pattern of cyclones, occurring specifically in the Bay of Bengal, along with the increased frequency of cyclone occurrences. The cyclones in 2018-2022 have been found to intensify rapidly from a low-pressure disturbance to severe cyclonic storm within 48-54 hours. While meteorological forecasting predicts the onset and wind speed, the holistic wind profile for an intensifying cyclone changes rapidly with time and interference from nearby structures. The damage to life and property depends on the structural integrity of structures. With modernization, the number of concrete masonry structures has increased. The coastal-rural zones of Odisha are known to consist of traditional housing made of different materials like rammed earth, wooden rafters with thatched roofs made of paddy stubble and wooden frames, stone with mud and in few cases, a mix of cement, wood and stones. Although the materials vary, the shape of traditional houses, schools and temples were found to be either gabble roofed or hip-roofed. Studies done in the past highlight the increased vulnerability of gabble-roofed structures to severe destruction levels. Most of the previous research focuses on cyclone forecasting, zonation, and vulnerability analysis based on socio-economic parameters. A thorough structural vulnerability analysis and ranking of traditional housing is a must, considering the fact that the number and intensity of cyclones are rising. And also, the fact that as per the Economic Survey of 2018, 45% of coastal-rural households fall below the poverty line and rely on traditional modes of construction. The authors carried out a thorough on-field post-damage assessment of 2019 cyclone Fani and compared it with the historical data of damage caused to traditional structures due to past cyclones. Based on the time histories, recurrence period and intensity of cyclonic winds, different levels of vulnerability were assigned to the traditional structures of houses, schools and temples. A fragility function was designed to quantify the vulnerability levels. A detailed scientific interpretation of destruction/failure mechanisms is also presented. Further, to quantify the structural behaviour under cyclonic wind load, the cyclonic wind profile was modelled numerically, and validated with wind tunnel testing and finite element analysis was done on various structural members of a traditional gabble roof structure to study the loads and reactions of members. The consequences received showcased novel findings, such as temples being found to be structurally more stable to cyclonic wind loads. Based on the structural analysis and vulnerability levels, economically viable strengthening measures are provided for both, existing traditional structures and structures currently under construction.
英文关键词	Cyclonic winds; finite element analysis; fragility curve; structural measures; traditional structures; vulnerability
语种	英语
WOS研究方向	Geology ; Science & Technology - Other Topics
WOS类目	Geosciences, Multidisciplinary ; Multidisciplinary Sciences
WOS记录号	WOS:001185884600006
来源期刊	JOURNAL OF EARTH SYSTEM SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/306528
作者单位	Graphic Era University; Tongji University
推荐引用方式 GB/T 7714	Jena, Siddharth,Cao, Shuyang,Gairola, Ajay. Cyclonic wind loads and structural mitigation measures - vulnerability assessment of traditional housings in Odisha[J],2024,133(2).
APA	Jena, Siddharth,Cao, Shuyang,&Gairola, Ajay.(2024).Cyclonic wind loads and structural mitigation measures - vulnerability assessment of traditional housings in Odisha.JOURNAL OF EARTH SYSTEM SCIENCE,133(2).
MLA	Jena, Siddharth,et al."Cyclonic wind loads and structural mitigation measures - vulnerability assessment of traditional housings in Odisha".JOURNAL OF EARTH SYSTEM SCIENCE 133.2(2024).