Numerical simulation on wind-sand flow field at the bridge and roadbed transition section of Golmud-Korla Railway in northwestern China

Zhang Xingxin; Zhang Kai; Zhao Liming; Deng Yuhui; Deng Lijia

doi:10.12171/j.1000-1522.20210213

Journal of Beijing Forestry University > 2022 > 44(2): 75-81. > DOI: 10.12171/j.1000-1522.20210213

Zhang Xingxin, Zhang Kai, Zhao Liming, Deng Yuhui, Deng Lijia. Numerical simulation on wind-sand flow field at the bridge and roadbed transition section of Golmud-Korla Railway in northwestern China[J]. Journal of Beijing Forestry University, 2022, 44(2): 75-81. DOI: 10.12171/j.1000-1522.20210213

Citation:

PDF (4560 KB)

Numerical simulation on wind-sand flow field at the bridge and roadbed transition section of Golmud-Korla Railway in northwestern China

School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, Gansu, China

More Information

Received Date: June 06, 2021
Revised Date: September 14, 2021
Available Online: January 11, 2022
Published Date: February 24, 2022

Graphical Abstract

Abstract

Abstract

Objective This paper aims to explore the distribution law of the flow field, horizontal wind speed and sand accumulation characteristics in the transition section between the bridge and the roadbed (bridge-road) and near the roadbed, and reveal the formation mechanism of sand damage in the bridge-road transition section.
Method By means of numerical simulation, the flow field changes and the characteristics of sand accumulation in the bridge-road transition section and near the roadbed under different incoming wind speeds were studied. And use the numerical simulation of the sand distribution to compare with the actual on-site sand accumulation to verify the accuracy of the numerical simulation results.
Result When the wind-sand flow moved to the bridge-road transition section, it was hindered by the bridge-road transition section, resulting in speed divisions. Air flow deceleration zone, current collection acceleration zone, high speed zone, vortex cyclone zone and air flow recovery zone were formed, respectively, and the area of the deceleration zone on the leeward side of the bridge-road transition sectionwas significantly larger than that on the leeward side of the subgrade. Near the surface of the bridge-road transition section, the airflow velocity first decreased (negative value), then increased and then decreased (negative value), and finally returned to the incoming wind speed gradually. At a height of 4.2 m from the ground, the velocity change basically showed a V-shaped distribution, and at a height of 4.4 m from the ground, the velocity change basically showed a double-V-shaped distribution. According to the numerical simulation results, therewas more sand on the windward and leeward sides of the bridge-to-road transition section, and the clearance under the bridge was a good sand-crossing section. Most of the sand particles were transported to the leeward side of the bridge and will not deposit a lot on the bottom of the beam. Sand accumulation on the roadbed mainly occurred on the windward side and rarely on the leeward side.
Conclusion As time goes by, the sand near the transition section of the bridge and road will slowly spread to the surrounding area. One part is deposited at the bottom of the beam, causing sand at the bottom of the beam, and the other part jumps over the subgrade and enters the track bed. Therefore, the prevention and control of sand hazards in the transitional section of bridges and roads cannot be ignored. The accumulated sand must be cleaned regularly to prevent sand particles from entering the track bed and steel rails and endangering driving safety.
- Golmud-Korla Railway,
- wind-sand flow,
- flow field distribution,
- bridge-to-road transition section,
- numerical simulation

FullText(HTML)

References (16)

References

[1]	吴正. 风沙地貌与治沙工程学[M]. 北京: 科学出版社, 2010. Wu Z. Geomorphology of wind-drift sands and their controlled engineering [M]. Beijing: Science Press, 2010.
[2]	Mehdipour R, Baniamerian Z. A new approach in reducing sand deposition on railway tracks to improve transportation[J/OL]. Aeolian Research, 2019[2021−07−13]. DOI: 10.1016/j.aeolia.2019.07.003
[3]	Zhang K C, Qu J J, Liao K T, et al. Damage by wind-blown sand and its control along Qinghai-Tibet Railway in China[J]. Aeolian Research, 2010, 1(3−4): 143−146. doi: 10.1016/j.aeolia.2009.10.001
[4]	Wang T, Qu, J J, Ling Y Q, et al. Wind tunnel test on the effect of metal net fences on sand flux in a gobi desert, China[J]. Journal of Arid Land, 2017, 9(6): 888−899. doi: 10.1007/s40333-017-0068-5
[5]	Tan L H, An Z S, Zhang K, et al. Intermittent aeolian saltation over a gobi surface: threshold, saltation layer height, and high-frequency variability[J]. Journal of Geophysical Research: Earth Surface, 2020, 125(1): 1−13.
[6]	Zhang K, Zhao P W, Zhao J J, et al. Protective effect of multi-row HDPE board sand fences: a wind tunnel study[J]. International Soil and Water Conservation Research, 2021, 9(1): 103−115. doi: 10.1016/j.iswcr.2020.08.006
[7]	Xu B, Zhang J, Huang N, et al. Characteristics of turbulent aeolian sand movement over straw checkerboard barriers and formation mechanisms of their internal erosion form[J]. Journal of Geophysical Research, 2018, 123(13): 6907−6919.
[8]	Tan L H, Zhang W M, Qu J J, et al. Aeolian sediment transport over gobi: field studies a top the mogao grottoes, China[J]. Aeolian Research, 2016(21): 53−60.
[9]	鱼燕萍, 肖建华, 屈建军, 等. 两种典型高等级公路路基断面风沙过程的风洞模拟[J]. 中国沙漠, 2019, 39(1): 68−79. Yu Y P, Xiao J H, Qu J J, et al. Wind tunnel simulation of aeolian sand process in subgrade section of two typical high-grade highway[J]. Journal of Desert Research, 2019, 39(1): 68−79.
[10]	He W, Huang N, Dun H C, et al. CFD evaluation of erosion rate around a bridge near a sand dune[J/OL]. Journal of Physics: Conference Series, 2017, 822[2021−08−22]. https://iopscience.iop.org/article/10.1088/1742-6596/822/1/012044.
[11]	石龙, 蒋富强, 韩峰, 等. 风沙两相流对铁路路堤响应规律的数值模拟研究[J]. 铁道学报, 2014, 36(5): 82−87. Shi L, Jiang F Q, Han F, et al. Numerical Simulation of Response Law of Wind-blown Sand Flow around the Railway Embankment[J]. Journal of the China Railway Society, 2014, 36(5): 82−87.
[12]	王德鑫. 双层防风挡沙墙的风沙两相流数值模拟[D]. 兰州: 兰州大学, 2020. Wang D X. Numerical Simulation of Wind-sand two-phase Flow in Double-layer Windshield Anti-sand Wall[D]. Lanzhou: Lanzhou University, 2020.
[13]	张凯, 杨子江, 王起才, 等. 格库铁路HDPE板沙障孔隙率与有效防护距离关系[J]. 中国铁道科学, 2019, 40(5): 16−21. doi: 10.3969/j.issn.1001-4632.2019.05.03 Zhang K, Yang Z J, Wang Q C, et al. Relationship between porosity and effective protection distance of HDPE board sand barrier on Golmud-Korla Railway[J]. China Railway Science, 2019, 40(5): 16−21. doi: 10.3969/j.issn.1001-4632.2019.05.03
[14]	张凯, 王起才, 杨子江, 等. 新建格库铁路HDPE板高立式沙障防风效益数值模拟研究[J]. 铁道学报, 2019, 41(3): 169−175. doi: 10.3969/j.issn.1001-8360.2019.03.023 Zhang K, Wang Q C, Yang Z J, et al. Research on numerical simulation on wind protection benefits of HDPE panels with high vertical sand barrier in the newly-built Golmud-Korla Railway[J]. Journal of the China Railway Society, 2019, 41(3): 169−175. doi: 10.3969/j.issn.1001-8360.2019.03.023
[15]	张凯. 格库铁路青海段风沙灾害工程防治研究[D]. 兰州: 兰州交通大学, 2019. Zhang K. Study on the control engineering of wind-blown sand disasters along the Qinghai Section of Golmud-Korla Railway[D]. Lanzhou: Lanzhou Jiaotong University, 2019.
[16]	王文博, 黄宁, 顿洪超. 沙丘背风侧不同铁路结构形式对风沙环境的适应性分析[J]. 力学学报, 2020, 52(3): 680−688. doi: 10.6052/0459-1879-20-043 Wang W B, Huang N, Dun H C. Analysis of wind-sand movement over sand dune with difffferent railway forms downstream[J]. Chinese Journal of Theoretical and Applied Mechanics, 2020, 52(3): 680−688. doi: 10.6052/0459-1879-20-043

[1]	Zhang Qingshuo, Wei Liuming, Yang Yutong, Sun Jing, Fu Yunlin. Purification and composition of heartwood pigment of Pterocarpus macrocarpus[J]. Journal of Beijing Forestry University, 2020, 42(10): 126-136. DOI: 10.12171/j.1000-1522.20200225
[2]	ZHENG Dan, LI Xiao-min, HE Jing, LEI Jian-du. Optimization of extraction process for total flavonoids from leaves of Aquilaria sinensis by response surface method and purification technology[J]. Journal of Beijing Forestry University, 2017, 39(8): 104-110. DOI: 10.13332/j.1000-1522.20160343
[3]	ZHENG Yue, WANG Ping.. Extraction and purification conditions of anthocyanin from the fruit of Aronia melanocarpa.[J]. Journal of Beijing Forestry University, 2016, 38(11): 118-124. DOI: 10.13332/j.1000-1522.20150484
[4]	PAN Chen, REN Bai-guang, GAI Ying. Method of enzymatic synthesis and purification of p-coumaroyl-CoA[J]. Journal of Beijing Forestry University, 2016, 38(3): 120-124. DOI: 10.13332/j.1000-1522.20150366
[5]	ZHAO Yu-hong, ZHAI Ya-nan, DANG Yuan, SHI Ji-yi, WANG Zhen-yu. Optimization of purification conditions of polyphenols from Pinus sylvestris var. mongolica using response surface methodology.[J]. Journal of Beijing Forestry University, 2014, 36(1): 138-142.
[6]	MA Guo-gang, WANG Jian-zhong, HUANG Jian-dong. Extraction and purification of rutin from Sophora japonica L.flower buds and spectral characteristics of its complex with chromium (Cr3+)[J]. Journal of Beijing Forestry University, 2011, 33(1): 144-149.
[7]	LU Lei, ZHAO Min, ZHAO Li-yan, LIANG Shu-cheng, LI Tai-lun, DU Mei-hui. Purification, characterization and dye decolorization of a recombinant Pycnoporus sanguineus laccase[J]. Journal of Beijing Forestry University, 2010, 32(6): 125-129.
[8]	WANG Jin-li, LIANG Wen-yan, CHEN Li. Separation and purification of microcystin-LR.[J]. Journal of Beijing Forestry University, 2010, 32(2): 184-188.
[9]	HU Xiao-dan, , ZHANG De-quan, SUN Ai-dong. Purification of anthocyanins from perilla leaves with macroporous adsorbing resins[J]. Journal of Beijing Forestry University, 2008, 30(4): 34-38.
[10]	JI Hong_fang, SONG Rui_qing, , YANG Qian. Isolation, purification and structure identification of an antimicrobial bioactive compound extracted from Lactarius vellereus fermenting liquor[J]. Journal of Beijing Forestry University, 2008, 30(1): 92-95.

Cited By

Get Citation

PDF

XML

Article views (869) PDF downloads (48)

Turn off MathJax

Article Contents

Abstract

References

Numerical simulation on wind-sand flow field at the bridge and roadbed transition section of Golmud-Korla Railway in northwestern China

Abstract

References

Related Articles

Catalog

Numerical simulation on wind-sand flow field at the bridge and roadbed transition section of Golmud-Korla Railway in northwestern China

Abstract

References

Related Articles

Catalog

Export File

Citation

Format

Content