A physics-based model for clear-water scour development around a pile foundation in clayey soils

doi:10.1016/j.apor.2025.104436

IMECH-IR > 流固耦合系统力学重点实验室

	A physics-based model for clear-water scour development around a pile foundation in clayey soils
	Zhao, Peiqing 1,2; Qi WG(漆文刚)1,2 ; Liu, Bo 3; Gao FP(高福平)1,2
通讯作者	Qi, Wen-Gang([email protected])
发表期刊	APPLIED OCEAN RESEARCH
	2025-02-01
卷号	155 页码:14
ISSN	0141-1187
摘要	Significant advancements have been made in understanding local scour around pile foundations in non-cohesive soils; however, the scour phenomenon in clay soils remains relatively unexplored. Existing formulas for predicting scour development in clay soils around pile foundations often rely on empirical fittings to experimental data, rendering them limited by specific experiment conditions and prone to scale effects. To address this gap, this study proposes a physics-based model for clear-water scour development around a pile foundation in clay soils under both steady and unsteady flow conditions. By integrating a scaling expression for shear stress based on the phenomenological theory of turbulence (PTT) and incorporating a general sediment transport model, an ordinary differential equation (ODE) is derived to characterize the temporal variation in scour depth following the principle of sediment mass conservation. This ODE inherently considers all significant dimensional parameters influencing the scouring process, thereby effectively addressing potential scale-related issues. The predictions of the analytical solutions for the proposed ODE closely align with previously observed scour depth development curves around pile foundations in clay soils. Additionally, the model can be applied to scenarios with unsteady flow velocities, such as waterway floods and tidal currents.
关键词	Local scour Clay soils Time-varying model Phenomenological theory of turbulence Pile foundation
DOI	10.1016/j.apor.2025.104436
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001407400500001
关键词[WOS]	KOLMOGOROV INERTIAL RANGE ; TEMPORAL VARIATION ; LOCAL SCOUR ; BRIDGE ; EROSION ; PREDICTION ; PIER
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China[11972036] ; Youth Innovation Promotion Association CAS[2021018]
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
论文分区	一类
力学所作者排名	1
RpAuthor	Qi, Wen-Gang
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/98274
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.China Power Engn Consulting Grp Co Ltd, Beijing 100032, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Peiqing,Qi WG,Liu, Bo,et al. A physics-based model for clear-water scour development around a pile foundation in clayey soils[J]. APPLIED OCEAN RESEARCH,2025,155:14.Rp_Au:Qi, Wen-Gang
APA	Zhao, Peiqing,漆文刚,Liu, Bo,&高福平.(2025).A physics-based model for clear-water scour development around a pile foundation in clayey soils.APPLIED OCEAN RESEARCH,155,14.
MLA	Zhao, Peiqing,et al."A physics-based model for clear-water scour development around a pile foundation in clayey soils".APPLIED OCEAN RESEARCH 155(2025):14.