An novel energy dissipator with self-recovery capability after deformation for structurally energy-dissipating rock-shed

doi:10.1007/s11629-020-6601-6

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山地灾害与地表过程重点实验室

	An novel energy dissipator with self-recovery capability after deformation for structurally energy-dissipating rock-shed
	Xie, Qi-Jun 5; Su, Li-Jun 2,3,5; Bai, Hao 4; Tang, Hao 1,4; Zhang, Chong-Lei 5; Yu, Fang-Wei 5
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2021-11-01
卷号	18 期号:11 页码:3058-3068
关键词	Recoverable energy dissipator Dynamic constitutive model Rockfall test Numerical simulation Resist multiple impacts
ISSN号	1672-6316
DOI	10.1007/s11629-020-6601-6
英文摘要	The performance of a structurally dissipating rock-shed (SDR) depends largely on the capacity of its energy dissipators. At present, most energy dissipators are made of metals, which dissipate energy by unrecoverable plastic deformation. Therefore, they are not able to recover their energy-dissipation capacity after deformation under rockfall impact. However, a rockfall usually disintegrates into pieces when it rolls down from a higher position and results in multiple rockfall impacts. An energy dissipator with self-recovery capability is therefore more suitable for ensuring the safety of SDRs. Replacing metal with polyurethane (a hyperelastic material with remarkable self-recovery capability) can provide self-recovery capability for energy dissipators, making them more suitable for resisting multiple rockfall impacts. In this work, polyurethane was manufactured into two types of energy dissipators: cylindrical and cubical. Full-scale falling rock impact tests and dynamic numerical simulations were conducted to study the mechanical response of the energy dissipators. In addition, in order to ensure the accuracy of the simulation, the dynamic mechanical properties of the polyurethane were tested and its dynamic constitutive model was established. The experimental and simulation tests have clarified the advantages of the polyurethane energy dissipator. We also summarized the practical considerations in the design of energy dissipators.
WOS关键词	VISCOELASTIC CONSTITUTIVE MODEL ; REINFORCED-CONCRETE SLAB ; BEHAVIOR ; POLYURETHANE ; RELAXATION ; IMPACT ; SAND
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000720441400018
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/56325]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Su, Li-Jun
作者单位	1.Chengdu Univ Technol, Coll Environm & Civil Engn, Chengdu 610051, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Pakistan joint Res Ctr Earth Sci, CAS HEC, Islamabad 45320, Pakistan 4.Sichuan Expressway Construct & Dev Grp CO LTD, Chengdu 610041, Peoples R China 5.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Processes, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Xie, Qi-Jun,Su, Li-Jun,Bai, Hao,et al. An novel energy dissipator with self-recovery capability after deformation for structurally energy-dissipating rock-shed[J]. JOURNAL OF MOUNTAIN SCIENCE,2021,18(11):3058-3068.
APA	Xie, Qi-Jun,Su, Li-Jun,Bai, Hao,Tang, Hao,Zhang, Chong-Lei,&Yu, Fang-Wei.(2021).An novel energy dissipator with self-recovery capability after deformation for structurally energy-dissipating rock-shed.JOURNAL OF MOUNTAIN SCIENCE,18(11),3058-3068.
MLA	Xie, Qi-Jun,et al."An novel energy dissipator with self-recovery capability after deformation for structurally energy-dissipating rock-shed".JOURNAL OF MOUNTAIN SCIENCE 18.11(2021):3058-3068.