Study on Damage Mechanisms of Concrete Piers Impacted by Debris Flow in Complex Terrain

CHENG Maili; GUO Shaoheng; TA Pengpeng; CHENG Jutian

doi:10.13409/j.cnki.jdpme.20250227002

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Study on Damage Mechanisms of Concrete Piers Impacted by Debris Flow in Complex Terrain

更新时间：2026-04-15

- Study on Damage Mechanisms of Concrete Piers Impacted by Debris Flow in Complex Terrain
- Journal of Disaster Prevention and Mitigation Engineering Vol. 46, Issue 2, Pages: 400-408(2026)
- 作者机构：
  
  延安大学建筑工程学院，陕西延安 716000
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.20250227002
  CLC： U443.22
- Received：27 February 2025，
  
  Revised：2025-06-03，
  
  Published：28 April 2026
- 稿件说明：
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程麦理,郭少恒,拓鹏鹏等.复杂地形下碎屑流冲击混凝土桥墩的损伤机理研究[J].防灾减灾工程学报,2026,46(02):400-408.

CHENG Maili,GUO Shaoheng,TA Pengpeng,et al.Study on Damage Mechanisms of Concrete Piers Impacted by Debris Flow in Complex Terrain[J].Journal of Disaster Prevention and Mitigation Engineering,2026,46(02):400-408.
程麦理,郭少恒,拓鹏鹏等.复杂地形下碎屑流冲击混凝土桥墩的损伤机理研究[J].防灾减灾工程学报,2026,46(02):400-408. DOI： 10.13409/j.cnki.jdpme.20250227002.

CHENG Maili,GUO Shaoheng,TA Pengpeng,et al.Study on Damage Mechanisms of Concrete Piers Impacted by Debris Flow in Complex Terrain[J].Journal of Disaster Prevention and Mitigation Engineering,2026,46(02):400-408. DOI： 10.13409/j.cnki.jdpme.20250227002.

摘要

为探究艰险山区复杂地形下碎屑流对混凝土桥墩的冲击致灾机理，利用离散元软件PFC

开展了凸型、直线型及凹型三种斜坡滑槽仿真模拟试验，分析了碎屑流的运动规律及堆积特征，深入研究了混凝土桥墩在碎屑流动力冲击作用下的损伤演化规律。结果表明：凹型斜坡碎屑流启动阶段速度最大且峰值平均速度最高（6.38 m/s），但运动时间最短，凸型斜坡碎屑流启动阶段速度最小且峰值平均速度最低（2.53 m/s），但运动时间最长；凸型斜坡碎屑流堆积最为分散、致灾范围最广、桥墩前堆积高度最高，凹型斜坡碎屑流堆积规律则相反；凸型斜坡碎屑流对桥墩的峰值冲击力在

向、

向均最大，墩顶位移响应最显著（5.0 mm），凹型斜坡碎屑流对桥墩冲击力峰值在三向均最小，且墩顶位移最小仅1.07 mm；凸型斜坡场地下桥墩损伤最严重，损伤高度范围最大（距墩底0.27~1.32 m），直线型斜坡次之，凹型斜坡下桥墩损伤高度范围最小（0.06~0.31 m）；桥墩损伤率与主冲击方向（

向）峰值冲击力排序相同，即凸型斜坡

直线型斜坡

凹型斜坡。研究结果可为艰险山区桥梁碎屑流冲击灾害防治提供参考。

Abstract

To investigate the disaster-causing mechanisms of debris flow impact on concrete piers in complex terrain within hazardous mountainous areas

simulation tests were conducted using discrete element software PFC3D on three types of slope flumes: convex

linear

and concave. The movement patterns and accumulation characteristics of the debris flow were analyzed

and the damage evolution patterns of concrete piers under dynamic impact of debris flow were deeply studied. The results indicated that the debris flow on the concave slope exhibited the largest start-up velocity and the highest peak average velocity (6.38 m/s)

but the shortest movement duration. In contrast

the debris flow on the convex slope showed the smallest start-up velocity and the lowest peak average velocity (2.53 m/s)

but the longest movement duration. The debris flow accumulation on the convex slope was the most dispersed

covered the widest disaster area

and resulted in the greatest accumulation height in front of the pier

while the accumulation patterns on the concave slope exhibited the opposite trend. The peak impact force of the debris flow on the pier under the convex slope condition was the largest in both the X and Z directions

and the displacement response at the pier top was the most significant (5.0 mm). Under the concave slope condition

the peak impact force of the debris flow on the pier was the smallest in all three directions

and the pier-top displacement was minimal at only 1.07 mm. The pier damage was the most severe under the convex slope terrain

with the largest damage height range (0.27 m to 1.32m from the bottom of the pier)

followed by the linear slope

while the concave slope exhibited the smallest damage height range (0.06 m to 0.31 m). The pier damage rate followed the same ranking as the peak impact force in the main impact direction (X-direction): convex slope > linear slope > concave slope. The research findings can provide a reference for the prevention and mitigation of debris flow impact disasters on bridges in hazardous mountainous areas.

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references

Langdon S ， Johnson A ， Sharma R . Debris flow syndrome： Injuries and outcomes after the montecito debris flow ［J］. The American Surgeon ， 2019 ， 85 （ 10 ）： 1094 - 1098 .

Yan S X ， He S M ， Deng Y ， et al . A reliability-based approach for the impact vulnerability assessment of bridge piers subjected to debris flows ［J］. Engineering Geology ， 2020 ， 269 ： 105567 .

Auyeung S ， Alipour A ， Saini D . Performance-based design of bridge piers under vehicle collision ［J］. Engineering Structures ， 2019 ， 191 ： 752 - 765 .

赵武超，钱江 . 重型车辆撞击桥墩的破坏模式及抗撞性能分析［J］. 防灾减灾工程学报， 2019 ， 39 （ 1 ）： 67 - 74， 88 .

Zhao W C ， Qian J . Failure mode and impact performance of bridge piers subjected to heavy vehicle collision ［J］. Journal of Disaster Prevention and Mitigation Engineering ， 2019 ， 39 （ 1 ）： 67 - 74， 88 . （in Chinese）

邵俊虎，占玉林，陈宁，等 . 驳船撞击下RC桥墩的非线性动力响应与损伤特征分析［J］. 防灾减灾工程学报， 2022 ， 42 （ 1 ）： 81 - 91 .

Shao J H ， Zhan Y L ， Chen N ， et al . Nonlinear dynamic response and damage characteristic analysis of RC pier under barge collision ［J］. Journal of Disaster Prevention and Mitigation Engineering ， 2022 ， 42 （ 1 ）： 81 - 91 . （in Chinese）

Sha Y Y ， Amdahl J ， Dørum C . Numerical and analytical studies of ship deckhouse impact with steel and RC bridge girders ［J］. Engineering Structures ， 2021 ， 234 ： 111868 .

毕钰璋，何思明，王东坡，等 . 碎屑流冲击下的桥墩动力响应特征分析［J］. 中国地质灾害与防治学报， 2017 ， 28 （ 4 ）： 16 - 21 .

Bi Y Z ， He S M ， Wang D P ， et al . Discrete⁃element investigation of rock avalanches impact on the bridge pier ［J］. The Chinese Journal of Geological Hazard and Control ， 2017 ， 28 （ 4 ）： 16 - 21 . （in Chinese）

Cheng M L . Numerical analysis of the dynamic response of concrete bridge piers under the impact of rock debris flow ［J］. Buildings ， 2024 ， 14 （ 6 ）： 1504 .

陈勇，姚昌荣，朱永发，等 . 碎屑流冲击桥墩的最大冲击力影响因素试验研究［J］. 铁道建筑， 2023 ， 63 （ 8 ）： 76 - 81 .

Chen Y ， Yao C R ， Zhu Y F ， et al . Experimental study on influencing factors of maximum impact force of debris flow impacting bridge pier ［J］. Railway Engineering ， 2023 ， 63 （ 8 ）： 76 - 81 . （in Chinese）

陈勇，姚昌荣，周迅，等 . 基于DEM-FEM耦合方法的碎屑流对桥墩最大冲击力的影响因素研究［J］. 自然灾害学报， 2024 ， 33 （ 2 ）： 65 - 74 .

Chen Y ， Yao C R ， Zhou X ， et al . Influential factors of the maximum impact force of rock avalanche flow on bridge piers using DEM-FEM coupled method ［J］. Journal of Natural Disasters ， 2024 ， 33 （ 2 ）： 65 - 74 . （in Chinese）

樊晓一，夏贵平，温翔，等 . 偏转地形约束条件下滑坡-碎屑流运动速度与颗粒分布的试验研究［J］. 山地学报， 2024 ， 42 （ 3 ）： 389 - 400 .

Fan X Y ， Xia G P ， Wen X ， et al . An experimental study on the velocity and particle distribution of landslide-debris flow motion under deflected terrain constraints ［J］. Mountain Research ， 2024 ， 42 （ 3 ）： 389 - 400 . （in Chinese）

王文沛，殷跃平，胡卸文，等 . 碎屑流冲击下桩梁组合结构拦挡效果及受力特征研究［J］. 地质力学学报， 2022 ， 28 （ 6 ）： 1081 - 1089 .

Wang W P ， Yin Y P ， Hu X W ， et al . Effectiveness and mechanical characteristics of a pile-beam composite structure in blocking debris flows ［J］. Journal of Geomechanics ， 2022 ， 28 （ 6 ）： 1081 - 1089 . （in Chinese）

Yan S X ， He S M ， Wang D P ， et al . Design and optimisation of a protective device for bridge piers against debris flow impact ［J］. Bulletin of Engineering Geology and the Environment ， 2020 ， 79 （ 7 ）： 3321 - 3335 .

Zhong H Q ， Yu Z X ， Zhang C ， et al . Dynamic mechanical responses of reinforced concrete pier to debris avalanche impact based on the DEM-FEM coupled method ［J］. International Journal of Impact Engineering ， 2022 ， 167 ： 104282 .

Cheng M L ， Gao W W . Study on the impact law of V-shaped gully debris avalanches on double-column piers ［J］. Buildings ， 2024 ， 14 （ 3 ）： 577 .

胡晓波，樊晓一，姜元俊 . 运动场地地形条件对碎屑流动力特征的影响研究［J］. 岩石力学与工程学报， 2020 ， 39 （增1 ）： 2940 - 2953 .

Hu X B ， Fan X Y ， Jiang Y J . Study on the influence of topography conditions on the dynamic characteristics of dry granular flow ［J］. Chinese Journal of Rock Mechanics and Engineering ， 2020 ， 39 （ Sup1 ）： 2940 - 2953 . （in Chinese）

王涛，韩彦辉，朱永生，等 . PFC2D/3D 颗粒离散元计算方法及应用［M］. 北京：中国建筑工业出版社， 2020 .

Li B ， Gong W P ， Tang H M ， et al . DEM simulation of the bridge collapse under the impact of rock avalanche： A case study of the 2020 yaoheba rock avalanche in southwest China ［J］. Bulletin of Engineering Geology and the Environment ， 2024 ， 83 （ 4 ）： 104 .

Shiu W J ， Lee C F ， Chiu C C ， et al . Analyzing landslide-induced debris flow and flow-bridge interaction by using a hybrid model of depth-averaged model and discrete element method ［J］. Landslides ， 2023 ， 20 （ 2 ）： 331 - 349 .

Zhang H B ， Gao S L ， Li H B ， et al . Triaxial test analysis and discrete element simulation of CFBC ［J］. Construction and Building Materials ， 2023 ， 409 ： 133754 .

王玉峰，许强，程谦恭，等 . 复杂三维地形条件下滑坡-碎屑流运动与堆积特征物理模拟实验研究［J］. 岩石力学与工程学报， 2016 ， 35 （ 9 ）： 1776 - 1791 .

Wang Y F ， Xu Q ， Cheng Q G ， et al . Experimental study on the propagation and deposit features of rock avalanche along 3D complex topography ［J］. Chinese Journal of Rock Mechanics and Engineering ， 2016 ， 35 （ 9 ）： 1776 - 1791 . （in Chinese）

Zhan L ， Peng C ， Zhang B Y ， et al . Three-dimensional modeling of granular flow impact on rigid and deformable structures ［J］. Computers and Geotechnics ， 2019 ， 112 ： 257 - 271 .

顾乡，赵雷，余志祥，等 . 落石冲击对山区桥墩的损伤研究［J］. 铁道工程学报， 2016 ， 33 （ 3 ）： 72 - 75， 98 .

Gu X ， Zhao L ， Yu Z X ， et al . Research on the damage of bridge pier in mountain area under impact of rockfall ［J］. Journal of Railway Engineering Society ， 2016 ， 33 （ 3 ）： 72 - 75， 98 . （in Chinese）

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