Inicio  /  Applied Sciences  /  Vol: 12 Par: 2 (2022)  /  Artículo
ARTÍCULO
TITULO

Numerical Investigation into Lateral Behavior of Monopile Due to Scour Enhanced: Role of State-Dependent Dilatancy

Ning Jia    
Junwei Liu and Xuetao Wang    

Resumen

The removal of soil during scouring is crucial to the lateral resistance of piles in bridges of railways or highways. In this process, dilatancy of the interface soil induces variation in normal stress, which in turn influences the interface soil lateral resistance. Due to the lack of analysis in previous studies in terms of cohesionless soil state (i.e., relative density and stress level) in remaining soil after scouring, it is difficult to simulate the properties and behavior of interface soil. The objective of this study is to explain the change of the sand state at the compression interface after scouring, quantify the stress-strain characteristics of the pile during this period and eventually present the prediction p-y curves of the lateral service capacity. The state-dependent constitutive model for saturated sand is employed, combined with the 3D finite element simulation, and the state development of the remaining soil is exhibited. The enhancement of dilation and stress relief of the remaining shallow horizon eventually gives rise to the reduction of the lateral resistance. In addition, the remaining overburden soil surrounding the pile restricts the interface soil, enlarging the normal stress and strengthening the deep horizon. Then, the friction angle considered the influence of state-dependent changes is used to quantify the hyperbolic p-y curves.

Palabras claves

 Artículos similares

       
 
Junyao Zhang, Hao Zhan and Baigang Mi    
The submerged inlet exhibits good stealth characteristics and lower drag, but it has a low total pressure recovery coefficient and high distortion rate, which limits its widespread application. This paper proposes a vortex diverter aimed at enhancing the... ver más
Revista: Aerospace

 
Muhammad Sulman, Simone Mancini and Rasul Niazmand Bilandi    
Incorporating steps into a hull reduces the wetted surface, promoting improved hydrodynamic lift and reduced resistance at high speeds, provided that the step is designed appropriately. Traditional hydrodynamics studies rely on scaled model testing in to... ver más

 
Antoine Soloy, Carlos Lopez Solano, Emma Imen Turki, Ernesto Tonatiuh Mendoza and Nicolas Lecoq    
This study delves into the morphodynamic changes of pebble beaches in response to storm events, employing a combination of observational and numerical approaches. This research focuses on three extreme events, meticulously examining morhological changes ... ver más

 
Shuang Ruan, Ming Zhang, Shaofei Yang, Xiaohang Hu and Hong Nie    
A dynamic model is established to investigate the shimmy instability of a landing gear system, considering the influence of nonlinear damping. The stability criterion is utilized to determine the critical speed at which the landing gear system becomes un... ver más
Revista: Aerospace

 
Mengxiang Li, Guo Wang, Kun Liu, Yue Lu and Jiaxia Wang    
The safety assessment of ship cargo securing systems is of significant importance in preventing casualties, vessel instability, and economic losses resulting from the failure of securing systems during transportation in adverse sea conditions. In this st... ver más