铁道标准设计2017，Vol.61Issue(5)：1-5,5.DOI:10.13238/j.issn.1004-2954.2017.05.001
酒泉至额济纳铁路防沙堤风洞试验数值模拟及积沙试验研究
Study on Sand Dike through Wind Tunnel Numerical Simulation Test and Sand Pile Test on Jiuquan to EJiNa Railway
常晓波1
作者信息
- 1. 中铁第一勘察设计院集团有限公司地质路基设计处,西安 710043
- 折叠
摘要
Abstract
Sand dike is a low cost and widely used sand-control engineering method.The paper studies systematically the triangular and trapezoidal cross-section sand dikes and sums up the advantages and disadvantages of the two.The flow field of the structure, the pressure of the flow field and the accumulation of sand of sand dikes with different cross section are compared and studied by means of wind tunnel test.Then the wind tunnel test is verified and compared by using FLUENT software numerical simulation.The results of the study show that:(1) the width of the low speed area formed in front of the trapezoidal sand dike is bigger than that of the triangle one;considering the groin area in front of the grains of sand deposition and retention, the trapezoidal is more effective than the triangle;(2) considering the effective sand-control behind sand dike, the width of the groin of the triangle is greater than that of the trapezoidal and the effect of the triangle is better than that of the trapezoid;(3) the sand piles up in front of the sand dike and stops piling when it reaches two-thirds of sand dike height, part of sand is blown to the two ends of the sand dike and another part is blown over the top of the sand dike and falls on the sand accumulation slope.The proposed Jiuquan to EJiNa Railway and other modes of transportation and civil architectures can make use of the above results to decide their individual shape of sand dike for best sand-control.关键词
酒额铁路/防沙堤/风流场/风洞试验/表面压力/积沙试验Key words
Jiuquan to EJiNa Railway/Sand Dike/Wind field/Wind tunnel test/Surface Pressure/Sand pile test分类
交通工程引用本文复制引用
常晓波..酒泉至额济纳铁路防沙堤风洞试验数值模拟及积沙试验研究[J].铁道标准设计,2017,61(5):1-5,5.
