Effect of Shaking Intensity on Seismic Response of Single-Pile Foundation in Liquefiable Soil

2006 ◽  
Author(s):  
D. Su ◽  
X. S. Li
Keyword(s):  
Seismic Response ◽  
Pile Foundation ◽  
Single Pile ◽  
Liquefiable Soil

scholarly journals Analysis of Factors Affecting Bearing Capacity of Large Diameter Single Piles of Offshore Wind Power under Earthquake Loads

2019 ◽  
Vol 136 ◽  
pp. 04061
Author(s):  
Yazhou Li ◽  
Li Dong
Keyword(s):  
Wind Power ◽  
Influencing Factors ◽  
Pile Foundation ◽  
Large Diameter ◽  
Horizontal Displacement ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Single Pile ◽  
Horizontal Deformation ◽  
Offshore Wind Power

The offshore wind turbine single pile foundation structure is simple and easy to install, but in the earthquake environment, large horizontal displacement is easy to occur, which affects the safe operation of offshore wind turbines. For this reason, the bearing characteristics and influencing factors of large-diameter single-pile offshore wind power under earthquake load are analyzed. The Mohr-Coulomb model is used as the model. The ABAQUS is used to construct the large-scale single-pile finite element model of offshore wind power. Loads and analysis of bearing characteristics and influencing factors of large-diameter single-pile offshore wind power under seismic loading. It is found that the increase of pile foundation depth will significantly reduce the horizontal displacement at the top of single pile. After increasing to a certain extent, it has no significant effect on the development of horizontal deformation of large diameter single pile; with the increase of pile diameter and wall thickness, The deformation of large diameter single pile foundation is reduced, but the influence of the pile foundation thickness on the horizontal deformation of the large diame-ter single pile foundation is no longer significant.

Study on Lateral Dynamic Response of Pile Foundation in Liquefiable Soil by Using FBG Method

2012 ◽  
Vol 238 ◽  
pp. 337-340 ◽  
Author(s):  
Yu Run Li ◽  
Yan Liang ◽  
Xing Wei ◽  
Yun Long Wang ◽  
Zhen Zhong Cao
Keyword(s):  
Dynamic Response ◽  
Data Acquisition ◽  
Pile Foundation ◽  
Maximum Stress ◽  
Shaking Table Test ◽  
Data Acquisition System ◽  
Seismic Damage ◽  
Shaking Table ◽  
Calculation Methods ◽  
Liquefiable Soil

The study on lateral dynamic response of pile foundation in liquefiable soil is a significant part about seismic damage. In this paper, a new data acquisition system of FBG and calculation methods is used in the small shaking table test. The results show that FBG method used in this test is proved to be efficient and acceptable in both time characteristics and precision characteristics, it may be widely applied in the future doubtlessly. What’s more, the characteristics of p-y curves in different peak accelerations are discussed. And varying of maximum stress and displacement by corresponding acceleration is discussed. A contrast about p-y curve between dry sand and saturate sand is related, which provides a new direction in research about p-y curve.

Numerical Simulation of Deformation Pattern to Pile Raft Foundation

2011 ◽  
Vol 71-78 ◽  
pp. 4460-4462
Author(s):  
Ya Dong Chen ◽  
Xu Dong Wang ◽  
Yue Xin She ◽  
Jiang Dong Cai
Keyword(s):  
Numerical Simulation ◽  
Displacement Field ◽  
Pile Foundation ◽  
Deformation Pattern ◽  
Single Pile ◽  
Deep Foundation ◽  
Raft Foundation ◽  
Study Results ◽  
Good Consistency ◽  
Foundation Failure

ABAQUS is used to study the load-settlement characteristic and soil displacement field of the pile raft foundation. Numerical results are compared to the outputs from model test. The study results show that good consistency is obtained from the comparison of results between numerical simulation and model tests. Small pile space will weaken the single pile bearing capacity. The compress region is mainly centralized in the soil beneath the pile tip to the 3b space pile raft foundation, which presents a massive deep foundation failure pattern. As the increase of pile space, the compress region under cap shifts upward. The displacement influence depth of 6b space pile foundation is smaller than 3b space pile raft foundation, and it is destroyed by the lateral squeeze of the soil around piles.

Buildings on the Slope Considering Effects of Uneven Settlement of Single Pile on the Structure Research

2011 ◽  
Vol 368-373 ◽  
pp. 1949-1954
Author(s):  
Li Ming Wu ◽  
Zi Jian Wang
Keyword(s):  
Finite Element Analysis ◽  
Pile Foundation ◽  
Normal Load ◽  
Single Pile ◽  
Analysis Software ◽  
Load Bearing Capacity ◽  
Element Analysis ◽  
Structural Impact ◽  
Different Parts ◽  
Structure Research

Buildings built on the slope and slope, in order to avoid a lot of digging embankment. According to the slope of potential changes in pile foundation of General unequal height. In the design of such buildings are generally the superstructure and Foundation when considered separately, under normal load bearing capacity and deformation is to meet to coordinal requirements.Changes in water level cause of slope sliding, so lead to individual settlement, the class meets the deformation of the structure of coordination of the Department of architecture and how the force is not known. Based on this, to a shore in 8 layers of pile foundation in the framework, for example, using finite element analysis software ANSYS in different parts of a single settlement on the basis of structural impact.

Numerical Analysis of the Influence of Vertical Load on the Horizontal Bearing Capacity of Single Pile

2011 ◽  
Vol 374-377 ◽  
pp. 1947-1952 ◽  
Author(s):  
Zhao Yun Xiao ◽  
Guo Xun Zhang ◽  
Wei Xu ◽  
Zhong Ming Xue
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Pile Foundation ◽  
Sandy Soils ◽  
Single Pile ◽  
Horizontal Load ◽  
Clayey Soils ◽  
Vertical Load ◽  
Concrete Pile ◽  
Finite Element Numerical Simulation

It is a complicated progress of interaction between pile and soil when pile is under both vertical load and horizontal load. This paper analyzes the variation of stress, strain, deformation and deflection of the pile body by finite element numerical simulation of single bored concrete pile under vertical load together with horizontal load. Based on the existing research results, conclusions could be that the vertical load can increase horizontal bearing capacity of the pile in sandy soils, but horizontal bearing capacity of the pile in clayey soils is more complicated. Hope that the simulation can provide some references for the design of pile foundation.

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