Analyzing landslide-induced debris flow and flow-bridge interaction by using a hybrid model of depth-averaged model and discrete element method

Shiu, Wenjie; Lee, Ching‐Fang; Chiu, Chaochang; Weng, Meng-Chia; Yang, Che‐Ming; Chao, Wei‐An; Liu, Chunyuan; Lin, Che-Hung; Huang, Wei

doi:10.1007/s10346-022-01963-y

Cited by 11 publications

(2 citation statements)

References 40 publications

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“…The discrete element method is based on the assumption of a discontinuous medium, and can simulate the fracture and separation of solid materials. It shows great superiority in simulating the large deformation, discontinuity, and failure separation of granular materials, and is suitable for studying the mechanical behavior between granular materials [33][34][35].…”

Section: Principles Of Discrete Element Methods (Dem) and The Contact...mentioning

confidence: 99%

Dynamic Response of PCCP under the Rockfall Impact Based on the Continuous–Discontinuous Method: A Case Study

Ma,

Tu,

Zhou

et al. 2024

Water

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Rockfalls are major geological hazards threatening prestressed concrete cylinder pipes (PCCPs) in water diversion projects. To accurately assess the impact of large deformation movements of rockfalls on PCCPs, this study utilized the continuous–discontinuous method to investigate the dynamic response of a PCCP under a rockfall. The impact mode of rockfalls, the mechanical characteristics of PCCP, and the nonlinear-contact characteristics between soil and PCCP were considered in this study. The advantages of continuous and discontinuous numerical simulation methods were utilized to establish a continuous and discontinuous coupling model of “tube-soil-rock” considering the interaction of soil and structure. The impact mechanism and process of PCCP under the rockfall were investigated by simulating the rockfall process and analyzing its spatiotemporal evolution. The influence of PCCP under rockfalls with different heights and radii was studied to clarify the effects of these two parameters on the PCCP. Combined with a practical application example of large-scale water transfer projects, there is a tendency of center flattening under static load and dynamic impact load, and the PCCP part directly below the impact point is the most dangerous. This investigation provided a comprehensive understanding of the impact mechanism of the PCCPs under rockfall. The findings of this study have significant implications for the design of the protection engineering of PCCPs and ensuring the safe operation of water diversion projects.

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Section: Principles Of Discrete Element Methods (Dem) and The Contact...mentioning

confidence: 99%

Dynamic Response of PCCP under the Rockfall Impact Based on the Continuous–Discontinuous Method: A Case Study

Ma,

Tu,

Zhou

et al. 2024

Water

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“…Investigations have revealed that the impact pressure of debris flows is influenced by many factors including front velocity, flow depth, bulk density, liquid volume fractions, solid volume fractions, and the interaction between debris flows and obstructions [15][16][17][18], and both laboratory experiments and in situ tests have been conducted to physically explain and quantify the impact pressure of debris flow on bridge decks, piers foundation, and abutment [10,19,20]. Additionally, numerical simulations have aided vulnerability analysis of bridge structures [21], and hybrid models have been utilized to simulate both horizontal and vertical forces exerted on bridge decks by debris flow [22]. Another possible reason for bridge destruction comes from the accumulation of debris.…”

Section: Introductionmentioning

confidence: 99%

Impact Pressure Influence of Flood on Bridge Deck under Sediment Deposition Conditions: An Experimental Study

Niu,

Long,

Meng

et al. 2023

Sustainability

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This paper investigates the impact of sediment deposition and inflow conditions on horizontal impact pressure and frequency analysis of bridge deck vibrations during flooding. Flooding-induced pressure and vibrations contribute to bridge collapse, and sediment deposition influences water flow and impact pressure. The study explores the relationship between sediment deposition height and impact pressure, revealing a significant increase as sediment approaches 50% of bridge deck clearance. Sediment amplifies impact pressure response to flow velocity changes. The dimensionless sediment deposition height has a greater influence on impact pressure compared to the inflow Froude number. Two distinct frequencies, dominant and secondary, are identified for impact pressure and water level fluctuations. Dominant frequencies positively correlate with sediment deposition height and Froude number, indicating an increasing trend. Secondary frequencies remain stable (0.31–0.58 Hz). These findings enhance understanding of flow dynamics and bridge–flow interaction in sediment-deposited channels, providing theoretical support for evaluating and managing disasters related to bridges in such environments. Overall, this research contributes to the field of bridge engineering and supports improved design and maintenance practices for bridges exposed to sediment-deposited channels.

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DEM Simulation of the Bridge Collapse under the Impact of Rock Avalanche: A Case Study of the 2020 Yaoheba Rock Avalanche in Southwest China

Li,

Gong,

Tang

et al. 2024

Bull Eng Geol Environ

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Analyzing landslide-induced debris flow and flow-bridge interaction by using a hybrid model of depth-averaged model and discrete element method

Cited by 11 publications

References 40 publications

Dynamic Response of PCCP under the Rockfall Impact Based on the Continuous–Discontinuous Method: A Case Study

Dynamic Response of PCCP under the Rockfall Impact Based on the Continuous–Discontinuous Method: A Case Study

Impact Pressure Influence of Flood on Bridge Deck under Sediment Deposition Conditions: An Experimental Study

DEM Simulation of the Bridge Collapse under the Impact of Rock Avalanche: A Case Study of the 2020 Yaoheba Rock Avalanche in Southwest China

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