Prediction of settlement influence factors for laterally loaded short piles by using a continuum-based soil model

• Published in: Journal of mechanical science and technology Vol. 34; no. 3; pp. 1207 - 1218
• Main Authors: Ryue, J., Baik, K., Lee, J.
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01.03.2020; Springer Nature B.V; 대한기계학회
• Subjects: Buckets; Caissons; Control; Dynamical Systems; Engineering; Finite element method; Industrial and Production Engineering; Mechanical Engineering; Original Article; Shear stress; Soil layers; Soil stresses; Soil suction; Soils; Vibration; 기계공학; Pile-soil interaction; Continuum-based model; Low slenderness ratio; Influence factors
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-020-0220-6

An existing continuum-based model for a laterally loaded pile embedded in layered soil is developed for long piles in which the vertical deformation of soil is neglected. However, the model is unsuitable for short piles, such as large-diameter caissons and suction buckets, because the soil will have considerable vertical deflections. Thus, this study attempts to modify the existing continuum-based model for laterally loaded long piles, and the aim is to render the model applicable for short piles with large diameters. Two resisting moments are added to the model: A moment on the base of the pile and a moment due to the vertical shear stress of the soil surrounding the pile. The modified continuum-based model is examined in terms of settlement influence factors and validated with the model with finite element (FE) analysis. Our linear static analysis found that the proposed modified continuum-based model is in good agreement with the FE method for short and long piles.