Closure to “Laterally Loaded Piles in a Layered Soil System”

1964 ◽  
Vol 90 (6) ◽  
pp. 165-165
Author(s):  
M. T. Davisson ◽  
H. L. Gill
Keyword(s):  
Layered Soil ◽  
Laterally Loaded Piles ◽  
Soil System ◽  
Laterally Loaded

Laterally Loaded Piles in a Layered Soil System

1963 ◽  
Vol 89 (3) ◽  
pp. 63-94 ◽  
Author(s):  
M. T. Davisson ◽  
H. L. Gill
Keyword(s):  
Layered Soil ◽  
Laterally Loaded Piles ◽  
Soil System ◽  
Laterally Loaded

scholarly journals Laterally Loaded Piles in Layered Soil

1987 ◽  
Vol 27 (4) ◽  
pp. 1-10 ◽  
Author(s):  
S.L. Lee ◽  
Y.C. Kog ◽  
G.P. Karunaratne
Keyword(s):  
Layered Soil ◽  
Laterally Loaded Piles ◽  
Laterally Loaded

Nonlinear cyclic behavior of laterally loaded pile in cohesive soil

2014 ◽  
Vol 51 (2) ◽  
pp. 129-143 ◽  
Author(s):  
Mehdi Heidari ◽  
Mojtaba Jahanandish ◽  
Hesham El Naggar ◽  
Arsalan Ghahramani
Keyword(s):  
Mechanical Properties ◽  
Cohesive Soil ◽  
Offshore Structures ◽  
Cyclic Behavior ◽  
Winkler Foundation ◽  
Backbone Curve ◽  
Laterally Loaded Piles ◽  
Soil System ◽  
Pile Interaction ◽  
Laterally Loaded

Pile foundations may be subjected to lateral dynamic loads due to different hazards, such as impact of ships on bridge piers or jetties during berthing, wave and wind actions on offshore structures, and seismic wave motion on different buildings. The beam on nonlinear Winkler foundation (BNWF) approach is widely employed for predicting the response of piles under lateral loading because of its simplicity and practical accuracy. p–y curves are employed to represent the nonlinear soil reactions within the framework of the BNWF approach. However, they are empirically obtained from limited full-scale field tests and are not unique, accounting only for the pile width and not its mechanical properties. On the other hand, the strain wedge (SW) method allows the assessment of three-dimensional (3-D) soil–pile interaction of laterally loaded piles by incorporating soil continuity and pile properties as well as soil properties. In this study, the nonlinear p–y curves generated by the SW model are implemented as the backbone curve of developed BNWF model to effectively account for different response features of the pile–soil system. These features include the soil and pile nonlinear behavior, cyclic degradation of soil stiffness and strength, formation of soil–pile gap, and radiation damping. Two case studies of cyclic lateral load tests for single piles are investigated to examine the effects of soil degradation and gap formation on the response of laterally loaded piles embedded in cohesive soil. The developed model is shown to be capable of representing different soil–pile interaction features observed in experiments. The predictions of the developed BNWF model are in good agreement with experimental results. Finally, a comprehensive parametric study is performed to compare the predictions of the SWM-based model of the pile response under cyclic loading with that obtained from the conventional p–y curve–based model for different pile cross-section configurations, mechanical properties (strength and stiffness), and soil strength–stiffness.

Soil Structure Interaction Analysis of a Berthing Structure Under Lateral Loading-By Numerical Approach

2017 ◽  
Author(s):  
Perumalsamy Kavitha ◽  
Ranganathan Sundaravadivelu
Keyword(s):  
Soil Structure ◽  
Interaction Analysis ◽  
Numerical Study ◽  
Soil Structure Interaction ◽  
Laterally Loaded Piles ◽  
Soil System ◽  
Structure Interaction ◽  
Earthquake Force ◽  
Laterally Loaded ◽  
Interaction Problem

In coastal and offshore structures, the predominant forces leading to lateral movements are mainly due to waves, currents, winds, berthing forces, mooring forces and lateral earth pressure due to unstable slope as a result of dredging or siltation etc. Due to relative movement between the piles and the soil, the load transfer to pile is a complex soil interaction problem. It is a two way problem and should be solved by structure-soil model with appropriate load displacement characteristics of both the structure and the soil. Pile-soil interaction analysis is carried out by numerical methods based on iterative techniques of equilibrium of forces and moments, based on relative stiffness of pile-soil system. Conventionally API guidelines and Vesic equation are used to analyze the laterally loaded piles. The study of laterally loaded pile in active soil wedge requires a proper assessment of soil structure interaction phenomenon involving the interaction between pile surface and the surrounding soil. The instability of soil wedge can occur due to self-weight, surcharge load, dredging, siltation and earthquake force. The soil structure interaction problem of piles located in active soil wedge has rarely been approached. Laterally loaded piles are analyzed by methods derived from the classical beam on elastic foundation mode in which the soil support is approximated by a series of independent elastic spring. The soil spring constants estimated from API guidelines and Vesic equations are not suitable for piles located in active soil wedge. Hence in this paper, a numerical study is carried out for a berthing structure in dense sand using PLAXIS 3D and STAAD Pro, in order to study the behaviour of piles in active soil wedge.

Investigating the resonance compaction effect on laterally loaded piles in layered soil

2018 ◽  
Vol 246 ◽  
pp. 1-11 ◽  
Author(s):  
Hongjiang Li ◽  
Songyu Liu ◽  
Liyuan Tong ◽  
Xiangchun Xu
Keyword(s):  
Layered Soil ◽  
Laterally Loaded Piles ◽  
Laterally Loaded
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