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Yu Cong,Heyi Liu,Liming Zhang,Sai Li,Yingren Zheng,Zaiquan Wang,Erdi Abi 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.11
A similarity model with a volumetric similarity ratio of 1:100 and a granular flow model for the tunnel were designed. By comparing macroscopic and mesoscopic information (such as fracture process, strain evolution, stress transfer, crack propagation, and stress distribution) of the tunnel models under load, the failure mechanism of the metro tunnel under load was investigated. The result showed that: 1) under the loading path, the instability area of the tunnel is mainly distributed in the straight wall on both sides. When the load is 1.5 MPa, a large number of cracks on both sides of the straight wall run through, resulting in the initial failure of the rock mass; 2) the surface rock mass of arch bottom is under tensile stress and the deep rock mass is under pressure stress, therefore, the fracture does not develop continuously. The surface of straight wall produces continuous development crack under the action of tensile stress; 3) the arch bottom first responds during the stress redistribution of the small-span tunnel; the top and middle parts of the side walls of the running tunnel with greatest potential for damage respond most; 4) in the process of stress redistribution, the peak stress of the deep measuring points of the straight wall is greater than that of the free surface; 5) at the initial stage of loading, tensile cracks account for a high proportion of all cracks found. When the load is 1.5 MPa, the proportion of shear cracks increases to 28%, and when the load is 1.6 Mpa, the proportion of shear cracks increases to 31%. Finally, the tensile-shear effect triggers the failure of the tunnel.
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Haiqing Yang,Heyi Tang,Zhen Liu,Xiuxiu Bu 아시아스포츠융합과학회 2024 Asia Pacific Journal of Applied Sport Sciences Vol.5 No.1
PURPOSE This study aimed to explore the phenomenon of Duanopo Horse racing in Sandu Sui Autonomous County, Guizhou Province, China, considering the event as a sport-tourism spectacle. In the context of that which incorporates variables, such as sport tourism expectations (STE), perceived quality (PQ), destination image (DI), and behavioral loyalty (BL). METHOD This study employs a combination of literature review and quantitative methodologies to explore interrelations among STE, PQ, DI, and BL in the Duanpo horse race in Sandu. The study specifically targets sports tourists who have participated in the "Duanpo Horse Race" in Sandu, from whom 395 valid questionnaires were collected for analysis. RESULT The quantitative analysis yielded several key findings. First, STE was found to significantly impact DI. Second, there was a highly significant effect of STE on PQ. Third, STE was not found to significantly affect BL. Fourth, the impact of DI on BL was not significant. Fifth, DI was found to significantly influence PQ. Lastly, PQ had a very significant effect on BL. CONCLUSION This study provides a quantitative examination of the Duanpo Horse Race within the Sui ethnic group from a sports tourism perspective. It contributes to the body of knowledge on sports tourism and ethnic traditional sports by clarifying relationships between STE, PQ, DI, and BL. The findings suggest that the government can draw more tourists by integrating ethnic traditional sports culture into the broader tourism culture. Enhancement of infrastructure and the quality of event services and management are pivotal. Such initiatives not only attract tourism but also facilitate the sustainable development of traditional ethnic sports culture.
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