Study on Vertical Vibration of Partially Exposed Friction Pipe Pile Groups Based on Fictitious Soil Pipe Pile Model

2020 ◽  
Vol 38 (6) ◽  
pp. 6487-6497
Author(s):  
Qifang Yan ◽  
Linchao Liu
Keyword(s):  
Vertical Vibration ◽  
Pile Groups ◽  
Pipe Pile ◽  
Pile Model ◽  
Soil Pipe ◽  
Fictitious Soil

scholarly journals Soil-Pile Interaction in the Pile Vertical Vibration Based on Fictitious Soil-Pile Model

2014 ◽  
Vol 2014 ◽  
pp. 1-11
Author(s):  
Guodong Deng ◽  
Jiasheng Zhang ◽  
Wenbing Wu ◽  
Xiong Shi ◽  
Fei Meng
Keyword(s):  
Dynamic Response ◽  
Separation Of Variables ◽  
Vertical Vibration ◽  
Dynamic Responses ◽  
Dynamic Force ◽  
Laplace Transform Technique ◽  
Velocity Response ◽  
Pile Interaction ◽  
Pile Model ◽  
Fictitious Soil

By introducing the fictitious soil-pile model, the soil-pile interaction in the pile vertical vibration is investigated. Firstly, assuming the surrounding soil of pile to be viscoelastic material and considering its vertical wave effect, the governing equations of soil-pile system subjected to arbitrary harmonic dynamic force are founded based on the Euler-Bernoulli rod theory. Secondly, the analytical solution of velocity response in frequency domain and its corresponding semianalytical solution of velocity response in time domain are derived by means of Laplace transform technique and separation of variables technique. Based on the obtained solutions, the influence of parameters of pile end soil on the dynamic response is studied in detail for different designing parameters of pile. Lastly, the fictitious soil-pile model and other pile end soil supporting models are compared. It is shown that the dynamic response obtained by the fictitious soil-pile model is among the dynamic responses obtained by other existing models if there are appropriate material parameters and thickness of pile end soil for the fictitious soil-pile model.

Model Tests Research on Extruding Soil Caused by Close-Mouth Step Cross-Section Pipe Pile

2015 ◽  
Vol 744-746 ◽  
pp. 531-535
Author(s):  
Qing Guang Yang ◽  
Jie Tian ◽  
Jie Liu ◽  
Ya Hui Wang
Keyword(s):  
Cross Section ◽  
Soil Surface ◽  
Average Diameter ◽  
Horizontal Displacement ◽  
Penetration Resistance ◽  
Variable Cross Section ◽  
Variable Cross ◽  
Pipe Pile ◽  
Uniform Cross Section ◽  
Pile Model

To study extruding soil caused of close-mouth step cross-section pipe Pile, model experimentals of five static piling tests with two constant cross-section pipe piles and three step cross-scetion pipe piles are performed in lab respectively and some observation points are installed for heave amount and horizontal displacement of soil surface around piles before tests.Results show that penetration resistance improved linearly with increasing of length of pile in soil and there has a turning point which become more and more obviously with increasing of average diameter of step cross-section pipe pile after the pile length in soil is 70cm.Comparing with uniform cross-section pipe pile, penetration resistance per unit volume is more bigger and increases with improving of variable cross-section ratio to step cross-section pipe pile.The swelling-up amount of soil around step cross-section pipe pile increases firstly, then decreases secondly ,and increases finally. Camparing with uniform cross-section pipe pile, the maximum heaves have 51.0% and 44.6% reduce respectively to setp cross-section pipe pile and the position of largest heaves moved from 1.0d to 1.5d.Moreover, the largest horizontal displacements have 24.6% and 26.9% reduce respectively to step cros-section pipe pile and the point of largest horizontal displacement moved from 2.0d to 2.5d.

Study on a New Kind of Pile-Stinging Prestressed Concrete Pipe Pile

2013 ◽  
Vol 351-352 ◽  
pp. 246-249
Author(s):  
Xin Tong Zhao ◽  
Xin Sheng Yin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Prestressed Concrete ◽  
Construction Technology ◽  
Element Analysis ◽  
Pipe Pile ◽  
Concrete Pipe ◽  
The Finite Element Analysis ◽  
Concrete Blocks ◽  
Pile Model

This article offers a new style of pipe pilestinging prestressed concrete pipe pile on the basis of the prestressed concrete pipe pile. The document introduces the construction technology. At first, reserve holes in pile in advance, then press concrete blocks into the soil throughout the holes by workers or construction equipments. The author also carried on the finite element analysis, established a common prestressed concrete pipe pile model PZ and a stinging prestressed concrete pipe pile model CZ. The results showed the value of bearing capacity of CZ increased by 9 %comparing with PZ.

Dynamic soil resistance to vertical vibration of pipe pile

2020 ◽  
pp. 108381
Author(s):  
Xin Liu ◽  
M. Hesham El Naggar ◽  
Kuihua Wang ◽  
Wenbing Wu
Keyword(s):  
Vertical Vibration ◽  
Soil Resistance ◽  
Pipe Pile

Field Lateral Load Tests on Slope-Stabilization Grouted Pipe Pile Groups

2015 ◽  
Vol 141 (4) ◽  
pp. 04014124 ◽  
Author(s):  
Bo Xiang ◽  
L. M. Zhang ◽  
Li-Rong Zhou ◽  
Yun-Yong He ◽  
Lin Zhu
Keyword(s):  
Lateral Load ◽  
Pile Groups ◽  
Slope Stabilization ◽  
Pipe Pile ◽  
Load Tests
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