气候变化领域集成服务门户(CCPortal): Effects of windblown sand damage on desert highway guardrails

CCPortal

DOI	10.1007/s11069-020-03987-w
	Effects of windblown sand damage on desert highway guardrails
	Wang C.; Li S.; Li Z.; Lei J.; Chen J.
发表日期	2020
ISSN	0921030X
起始页码	283
结束页码	298
卷号	103 期号:1
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.
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
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205980
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
推荐引用方式 GB/T 7714	Wang C.,Li S.,Li Z.,et al. Effects of windblown sand damage on desert highway guardrails[J],2020,103(1).
APA	Wang C.,Li S.,Li Z.,Lei J.,&Chen J..(2020).Effects of windblown sand damage on desert highway guardrails.Natural Hazards,103(1).
MLA	Wang C.,et al."Effects of windblown sand damage on desert highway guardrails".Natural Hazards 103.1(2020).