DOI: 10.1007/s11069-020-03987-w
论文题名: Effects of windblown sand damage on desert highway guardrails
作者: Wang C. ; Li S. ; Li Z. ; Lei J. ; Chen J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 1 起始页码: 283
结束页码: 298
语种: 英语
中文关键词: Barrier types
; Field test
; Sand deposition morphology
; Wind field
; Wind tunnel experiment
英文关键词: barrier (equipment)
; damage
; deposition
; desert
; hazard assessment
; pavement
; road
; roadside environment
; sand
; subgrade
; wind tunnel
; wind velocity
英文摘要: Barriers, which are normally used as highway safety instruments, cause adverse sand deposition damage to pavements along desert highways. To select a suitable barrier type for desert highways, this study conducted wind tunnel experiments and field test to measure the velocity field and sediment deposition morphology for different types of barriers. The results indicate that the velocity decreases in the foot of the subgrade, and the smooth air flow is maintained along the pavement. Wind velocity decreases slightly under the W-beam bottom, and the maximum velocity reduction is in the lee of the W-beam barrier. Wind velocity considerably decreases before and after the concrete barrier because of the dense structure of the barrier. Cable barriers slightly disturb the air flow and marginally decrease its velocity. Sediment deposition characteristic measurements demonstrate that for W-beam median barrier, sand is deposited on pavement in the lee of the barrier; further, for both W-beam roadside barrier and median barriers, sand is easy to be deposited in the front and back of the barrier, mainly on the windward pavement. For concrete barriers, considerable amount of sand is deposited in the front and back of the barriers, which induces the serious sand deposition damage on the pavement. The cable barrier causes minimal sand deposition, and it is a recommended structure for the barrier selection of desert highways. Further, small wind incidence angles are also favorable when designing desert highways. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168779
Appears in Collections: 气候变化与战略
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作者单位: College of Resource and Environment Sciences, Xinjiang University, Xinjiang, 830000, China; Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Xinjiang, 830000, China; Key Laboratory of Highway Engineering Technology in Arid and Desert Region, Ministry of Transport, Xinjiang, 830000, China
Recommended Citation:
Wang C.,Li S.,Li Z.,et al. Effects of windblown sand damage on desert highway guardrails[J]. Natural Hazards,2020-01-01,103(1)