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Cushion Layer Effect on the Impact of a Dry Granular Flow Against a Curved Rock Shed
Jiang, Yuan-Jun1; Wang, Zheng-Zheng2; Song, Yue3; Xiao, Si-You3
2018
Source PublicationROCK MECHANICS AND ROCK ENGINEERING
ISSN0723-2632
EISSN1434-453X
Volume51Issue:7Pages:2191-2205
SubtypeArticle
Contribution Rank1
AbstractThe dry granular flow produced by a landslide or mountain collapse represents an intense threat to road structures, including rock sheds in mountainous areas. In this study, we designed a set of experiments to investigate the impact mechanism of dry granular flow against a rock shed. The experimental rock shed model was characterized by a curved surface and a cushion layer of granular materials. Based on a video recording and the time history of the impact force, we determined the impact force characteristics and found that for cases without a cushion layer, the maximum normal and tangential force components are close to the end of the rock shed directly facing granular flow impact. With the addition of a cushion layer, the maximum impact force decreases and shifts approximately 30A degrees-45A degrees away from the end, which indicates that a cushion layer can not only reduce the magnitude of the impact force, but also change its distribution mode. We also verified the stronger energy dissipation capability of a cushion layer made of finer granular material. Finally, we performed a stiffness analysis, calculated the internal forces, and found that cushion layers can reduce the internal bending moment and internal shear force and increase the internal axial force. From the engineering perspective, all the changes introduced by a cushion layer positively contribute to rock shed safety.
KeywordDry granular flow Curved-surface rock shed Impact Cushion layer
DOI10.1007/s00603-018-1478-1
Indexed BySCI
WOS KeywordPROTECTION ; TESTS ; BARRIERS ; BEHAVIOR ; DESIGN ; WALL
Language英语
Quartile2区
Funding ProjectNational Natural Science Foundation of China[41502334] ; Institute of Mountain Hazards and Environment[SDS-135-1705] ; Institute of Mountain Hazards and Environment[SDS-135-1704]
TOP
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000435953800013
Funding OrganizationNational Natural Science Foundation of China ; Institute of Mountain Hazards and Environment
PublisherSPRINGER WIEN
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/21474
Collection山地灾害与地表过程重点实验室
Corresponding AuthorWang, Zheng-Zheng
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Sect 4,RenMinNanLu Ave, Chengdu 610041, Sichuan, Peoples R China
2.Dalian Univ Technol, Sch Civil Engn, Dalian, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Jiang, Yuan-Jun,Wang, Zheng-Zheng,Song, Yue,et al. Cushion Layer Effect on the Impact of a Dry Granular Flow Against a Curved Rock Shed[J]. ROCK MECHANICS AND ROCK ENGINEERING,2018,51(7):2191-2205.
APA Jiang, Yuan-Jun,Wang, Zheng-Zheng,Song, Yue,&Xiao, Si-You.(2018).Cushion Layer Effect on the Impact of a Dry Granular Flow Against a Curved Rock Shed.ROCK MECHANICS AND ROCK ENGINEERING,51(7),2191-2205.
MLA Jiang, Yuan-Jun,et al."Cushion Layer Effect on the Impact of a Dry Granular Flow Against a Curved Rock Shed".ROCK MECHANICS AND ROCK ENGINEERING 51.7(2018):2191-2205.
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