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Effect and mechanism of local scour around piers in tandem with skew angle protected by double circular gabions(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2025年6期
Page:
107-123
Research Field:
桥梁智能运维与防灾减灾
Publishing date:

Info

Title:
Effect and mechanism of local scour around piers in tandem with skew angle protected by double circular gabions
Author(s):
QI Hong-liang1; 2; 3;  ZHANG Xue4;  PAN Ling-ling5
Keywords:
bridge engineering;  skewed multi-piers;  double circular gabions;  local scour;  model test;  numerical simulation
PACS:
U447
DOI:
-
Abstract:
Aiming at the challenge of local scour protection in multi-pier configuration(single-deck double-pier and double-deck four-pier)skewed to the water flow direction, the local scour characteristics around downstream piers were investigated when using double circular gabions to protect the upstream pier. Laboratory model tests were conducted to study the local scour characteristics around skewed multi-piers under clear-water conditions. Numerical simulations were performed for selected test conditions to analyze the flow field, pressure and shear stress distributions around the skewed multi-piers. The research results indicate that when there is an angle between the pier group axis and the water flow direction, the protection measures applied to the upstream pier provide a certain degree of protection to downstream piers. For the single-deck double-pier arrangement, the optimal protective effect on downstream piers achieves at an angle of 0. Compared with the case without upstream pier protection, the scour reduction rate is approximately 58%. As the angle increases, the protective effect gradually diminishes. When the angle exceeds 15°, the scour reduction rate falls below 10%, necessitating protection for downstream piers. For the double-deck four-pier arrangement, the protection measures for the upstream pier have the same protective effect characteristics on downstream piers in the single-deck double-pier arrangement. When the angle exceeds 15°, protection is required for the second and fourth downstream piers. When the double circular gabions are used to protect the upstream pier, the permeability of gabions enables water inside to flow out along the equipotential lines, significantly reducing the water flow velocity around the gabions and thereby providing protection. Simultaneously, the area of low-velocity zone behind the upstream pier increases substantially, and the flow velocity around sides of downstream piers greatly reduces, effectively mitigating the local scour to downstream piers. As the angle between the pier axis and the water flow direction increases, the downstream piers gradually move out of the sheltered range of the upstream pier. The interferences of upstream and downstream piers with the vortex flow superimpose, and this superposition effect becomes more pronounced with larger angles, leading to a significant increase in the local scour depth to downstream piers. The research findings can provide a reference for the local scour protection of skewed multi-piers.2 tabs, 18 figs, 30 refs.

References:

[1] 刘 亢,刘均利,余文成.2007～2015年洪水导致垮塌桥梁的统计分析[J].城市道桥与防洪,2017(1):90-92.
LIU Kang, LIU Jun-li, YU Wen-cheng. Statistics and analysis of bridges collapsed by flood in 2007-2015[J]. Urban Roads Bridges and Flood Control, 2017(1): 90-92.
[2]刘 哲.斜交桥的冲刷计算研究[D].成都:西南交通大学,2009.
LIU Zhe. The scoured calculation study of skew bridge[D]. Chengdu: Southwest Jiaotong University, 2009.
[3]喻 鹏,祝志文.串列双圆柱桥墩局部冲刷精细化模拟[J].中国公路学报,2019,32(1):107-116.
YU Peng, ZHU Zhi-wen. Refined simulation for local scour around cylinder piers in tandem[J]. China Journal of Highway and Transport, 2019, 32(1): 107-116.
[4]STANSBY P K. A numerical study of vortex shedding from one and two circular cylinders[J]. Aeronautical Quarterly, 1981, 32(1): 48-71.
[5]吴雪茹,陈光强,莫崇勋,等.斜交桥的冲刷计算探讨[J].广西水利水电,2008(3):38-40.
WU Xue-ru, CHEN Guang-qiang, MO Chong-xun, et al. Discussion on scouring calculation of diagonal crossing bridge[J]. Guangxi Water Resources and Hydropower Engineering, 2008(3): 38-40.
[6]付晓丽.河湾下游斜交桥水流及冲刷特性研究[D].邯郸:河北工程大学,2008.
FU Xiao-li. Research on the flow and scour characteristics of the skew bridge at the downstream of the river bend[D]. Handan: Hebei University of Engineering, 2008.
[7]产华东.串列双排圆柱桥墩局部冲刷演变过程试验研究[D].合肥:合肥工业大学,2020.
CHAN Hua-dong. Experimental study on local scouring evolution process of tandem double-row cylindrical bridge piers[D]. Hefei: Hefei University of Technology, 2020.
[8]杨纪伟,滕丽娟,郑薇薇,等.用FLUENT模拟不同排列下的双柱绕流流场[J].人民黄河,2009,31(3):74-75.
YANG Ji-wei, TENG Li-juan, ZHENG Wei-wei, et al. Simulation of flow field around two columns with different arrangements by FLUENT[J]. Yellow River, 2009, 31(3): 74-75.
[9]段海澎,刘 武,朱大勇,等.非均质河床双排桥墩局部冲刷数值模拟研究[J].水资源与水工程学报,2020,31(2):155-160.
DUAN Hai-peng, LIU Wu, ZHU Da-yong, et al. Numerical simulation for local scour around double-row bridge piers in uneven sandy riverbed[J]. Journal of Water Resources and Water Engineering, 2020, 31(2): 155-160.
[10]齐洪亮,袁天刚,田伟平,等.顺直河道双桥墩纵向桥段流场过剩切应力特征数值模拟[J].长安大学学报(自然科学版),2021,41(4):32-42.
QI Hong-liang, YUAN Tian-gang, TIAN Wei-ping, et al. Modeling of excess shear stress around two columns of tandem piers of longitudinal bridge[J]. Journal of Chang'an University(Natural Science Edition), 2021, 41(4): 32-42.
[11]李 彬,孙东坡,赖冠文,等.桥墩布置形式对桥墩绕流及局部流场的影响[J].中国农村水利水电,2013(7):129-132,134.
LI Bin, SUN Dong-po, LAI Guan-wen, et al. The influence of bridge pier arrangement on circling flow around bridge pier and local flow field[J]. China Rural Water and Hydropower, 2013(7): 129-132, 134.
[12]门昭宇.斜交桥墩的局部冲刷试验及数值模拟研究[D].郑州:华北水利水电大学,2019.
MEN Zhao-yu. Partial scouring test and numerical simulation of skew piers[D]. Zhengzhou: North China University of Water Resources and Electric Power, 2019.
[13]吴永刚,魏 松,段海澎.桥墩基础局部冲刷防护措施研究综述[J].安徽建筑,2022,29(10):138-139,170.
WU Yong-gang, WEI Song, DUAN Hai-peng. A review article on mitigating local scour around bridge piers and their foundations[J]. Anhui Architecture, 2022, 29(10): 138-139, 170.
[14]CHIEW Y M. Scour protection at bridge piers[J]. Journal of Hydraulic Engineering, 1992, 118(9): 1260-1269.
[15]魏月梅,陈 丹.水流攻击角影响群桩桥墩周围局部冲刷护圈防护效果研究[J].南通航运职业技术学院学报,2017,16(4):64-66,106.
WEI Yue-mei, CHEN Dan. Study on protective effect of water flow attack angle on local scour guard ring around pile bridge piers[J]. Journal of Nantong Vocational and Technical Shipping College, 2017, 16(4): 64-66, 106.
[16]梁发云,彭 君,杨 昕.桥墩基础局部冲刷抛石防护性能波流水槽试验研究[J].结构工程师,2017,33(1):164-170.
LIANG Fa-yun, PENG Jun, YANG Xin. Flume tests for riprap countermeasure to bridge piers from local scour[J]. Structural Engineers, 2017, 33(1): 164-170.
[17]CRASWELL T, AKIB S. Reducing bridge pier scour using gabion mattresses filled with recycled and alternative materials[L]. Eng, 2020, 1(2), 188-210.
[18]周 通,周 领,叶四桥.石笼桥墩水毁模式试验与数值模拟研究[J].人民长江,2016,47(16):87-91.
ZHOU Tong, ZHOU Ling, YE Si-qiao. Model test and numerical simulation research on flood damage mode of gabion piers[J]. Yangtze River, 2016, 47(16): 87-91.
[19]齐洪亮,袁天刚,陈贵山,等.清水条件下淹没式透水桩群减少圆柱桥墩局部冲刷试验[J].长安大学学报(自然科学版),2023,43(2):69-79.
QI Hong-liang, YUAN Tian-gang, CHEN Gui-shan, et al. Experimental on local scour around cylindrical pier protected by submerged permeable pile group in clear water[J]. Journal of Chang'an University(Natural Science Edition), 2023, 43(2): 69-79.
[20]QI H L, TIAN W P, ZHANG H C. Modeling local scour around a cylindrical pier with circular collar with tilt angles(counterclockwise around the direction of the channel cross-section)in clear-water[J]. Water, 2021, 13(22): 3281.
[21]陈贵山.透水牺牲桩减少圆柱桥墩局部冲刷机理研究[D].西安:长安大学,2023.
CHEN Gui-shan. Study on the mechanism of local scour reduction around cylindrical pier using permeable sacrificial pile[D]. Xi'an: Chang'an University, 2023.
[22]袁天刚.透水护圈减少圆柱桥墩局部冲刷机理研究[D].西安:长安大学,2023.
YUAN Tian-gang. Mechanism of local scour reduction around cylindrical piers using permeable collars[D]. Xi'an: Chang'an University, 2023.
[23]齐洪亮,罗文俊,王 杰,等.透水牺牲桩减少上下游桥墩局部冲刷深度及机理[J].长安大学学报(自然科学版),2024, 44(2): 68-79.
QI Hong-liang, LUO Wen-jun, WANG Jie, et al. Mechanism of permeable sacrificial pile to reduce local scour depth of longitudinal double piers[J]. Journal of Chang'an University(Natural Science Edition), 2024, 44(2): 68-79.
[24]齐洪亮,王 杰,罗文俊,等.清水条件下环形石笼减小桥墩局部冲刷的机理[J].长安大学学报(自然科学版),2025,45(2):96-110.
QI Hong-liang, WANG Jie, LUO Wen-jun, et al. Mechanism of local scour reduction around pier using circular gabions in clear water[J]. Journal of Chang'an University(Natural Science Edition), 2025, 45(2): 96-110.
[25]齐洪亮,潘玲玲,张 雪,等.透水护圈减小斜交多桥墩的局部冲刷效果及机理[J].中国农村水利水电,2025(3):76-85.
QI Hong-liang, PAN Ling-ling, ZHANG Xue, et al. Effectiveness and mechanism of local scour reduction around multi-pier with small angle using permeable collar[J]. China Rural Water and Hydropower, 2025(3): 76-85.
[26]QI H L, YUAN T G, ZOU W, et al. Numerical study on local scour reduction around two cylindrical piers arranged in tandem using collars[J]. Water, 2023, 15(23): 4079.
[27]任致贤.多桥墩防冲结构分析及优化研究[D].呼和浩特:内蒙古农业大学,2016.
REN Zhi-xian. Study on scour plate structure and optimization with multiple piers[D]. Hohhot: Inner Mongolia Agricultural University, 2016.
[28]吴永刚.桥墩基础局部冲刷防护措施试验研究[D].合肥:合肥工业大学,2021.
WU Yong-gang. Experimental study on local scour protection measures of pier foundation[D]. Hefei: Hefei University of Technology, 2021.
[29]MELVILLE B W, RAUDKIVI A J. Flow characteristics in local scour at bridge piers[J]. Journal of Hydraulic Research, 1977, 15(4): 373-380.
[30]ROULUND A, SUMER B M, FREDSØE J, et al. Numerical and experimental investigation of flow and scour around a circular pile[J]. Journal of Fluid Mechanics, 2005, 534: 351-401.

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Last Update: 2025-12-20