Numerical Simulation Analysis of the Effective Length about Single Pile

2014 ◽  
Vol 501-504 ◽  
pp. 75-78
Author(s):  
Su Zhen Cheng ◽  
Feng You Zhang ◽  
Rong Cong ◽  
Li Li Liu
Keyword(s):  
Numerical Simulation ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Effective Length ◽  
Single Pile ◽  
Efficiency Coefficient ◽  
Vertical Load ◽  
Pile Settlement ◽  
Definition Of ◽  
Pile Length

In the paper, according to the definition of the effective length and criterion of the effective length of the single pile, using the numerical method to simulate the foundation of drilling hole perfusion of single pile under vertical load pile settlement and deformation of pile body, based on the way of combining the ultimate bearing capacity and settlement control of pile top, the pile efficiency coefficient of the effective pile length is determined in certain conditions, and also the effective length of single pile. Then, the more reasonable theoretical basis is provided for engineering design and construction.

Numerical Simulation Analysis of Bearing Performance of Extra-Long and Large-Diameter Single Pile

2014 ◽  
Vol 1065-1069 ◽  
pp. 943-948
Author(s):  
Zhi Meng Zhao ◽  
Jin Yi Chai ◽  
Cai Xia Fan
Keyword(s):  
Numerical Simulation ◽  
Elastic Modulus ◽  
Bearing Capacity ◽  
Simulation Analysis ◽  
Large Diameter ◽  
Ultimate Bearing Capacity ◽  
Single Pile ◽  
Pile Shaft ◽  
Settlement Ratio ◽  
Pile Length

The effects of pile diameter, the property of pile end bearing stratum, the material parameters of pile shaft and the changes of pile length on the bearing performance of extra-long and large-diameter single pile were examined with the finite element software ABAQUS to make the numerical simulation analysis, by establishing the overall axial symmetry model, which was based on the data of static load test of single pile at the Yellow River Bridge site. The results show that the ultimate bearing capacity of single pile, the stiffness and the end resistance ratio would increase gradually, whereas the compression settlement ratio decreases slowly; the pile end grouting can significantly increase the ultimate loads, and therefore, improve the bearing performance of piles, but it has little effect on the stiffness of pile when loading was smaller; the elastic modulus of pile shaft has no effect on the ultimate bearing capacity of friction piles, little on the end resistance ratio, while the pile compression settlement ratio would gradually decrease and the stiffness would increased with the increase of the elastic modulus of pile shaft, and this increase of stiffness would slow down with the increase of elastic modulus of pile shaft; it is unreasonable to improve the ultimate bearing capacity of extra-long single pile only by means of increasing the pile length.

Numerical Simulation of Squeezed Branch and Plate Pile Subjected to Vertical and Lateral Loads

2014 ◽  
Vol 926-930 ◽  
pp. 597-600
Author(s):  
Xiao Juan Gao ◽  
Yue Hui Li
Keyword(s):  
Numerical Simulation ◽  
Elastic Modulus ◽  
Bearing Capacity ◽  
Lateral Load ◽  
Vertical Load ◽  
Lateral Loads ◽  
Load Bearing Capacity ◽  
The Mean ◽  
Bearing Behavior ◽  
Pile Length

Based on the theoretical analysis results, the bearing behavior of squeezed and branch pile under vertical load and lateral load was analyzed in this paper. The mean works include the influence of vertical load on the pile lateral bearing capacity and influence of the lateral load on the vertical load bearing capacity. The factors influence the bearing capacity of pile such as elastic modulus of soil around and under pile bottom, pile length, plate position are also analyzed.

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.

Numerical Simulation Analysis for Foundation Settlement Sensitivity on LiShuiGou Aqueduct of ShiMen Reservoir

2011 ◽  
Vol 71-78 ◽  
pp. 1601-1604
Author(s):  
Di Zhang
Keyword(s):  
Numerical Simulation ◽  
Design Theory ◽  
Simulation Analysis ◽  
Design Method ◽  
Large Diameter ◽  
Orthogonal Experimental Design ◽  
Foundation Settlement ◽  
Pile Diameter ◽  
Constitutive Mode ◽  
Pile Length

The foundation of LiShuiGou Aqueduct of ShiMen Reservoir is composed of long-short and large diameter piles, with great diameter and length differences between these new and old piles. Numerical simulation of the FEM software ADINA and the orthogonal experimental design theory are applied to explore the sensitivity of long-short pile foundation settlement, under different pile length, pile diameter, pile space, and soil constitutive model, with foundation settlement as the evaluation index. The results show that the descending order of the sensitivity of four factors is: pile length > pile diameter > pile space > soil constitutive mode. Some scientific and rational approaches and basis are consequently provided to explore the most effective reinforcement measures and design method for long-short and large diameter piles.

The Numerical Simulation Analysis of the Straightening Process of the Large H-Shaped Steel

2012 ◽  
Vol 538-541 ◽  
pp. 905-908
Author(s):  
Lin Chen ◽  
Wei Tong ◽  
Hao Li ◽  
Yu Yan Liu
Keyword(s):  
Numerical Simulation ◽  
Residual Stress ◽  
Plastic Deformation ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Element Model ◽  
Solid Model ◽  
Stress And Strain ◽  
Stress Control ◽  
Set Up

A solid model and finite element model of nine-roller constant roller spacing of large H-shaped steel were set up, researching the problems of elastic-plastic deformation in straightening simulation for nine rollers continuous straightening process of large H-shaped steel. Through analyzing the stress and strain relation of large H-shaped steel, and analyzing the residual stress of H-shaped steel in the straightening process, a theoretical basis for the further step analysis the residual stress control after the H-shaped steel straightening was established.

Numerical Simulation and Experimental Study of Static Driven Short Piles in the Dualistic Structure Stratum

2011 ◽  
Vol 55-57 ◽  
pp. 193-196
Author(s):  
Xin Gui Zhang ◽  
Xiang Gang Kong ◽  
Zhen Song
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Pile Foundation ◽  
Simulation Analysis ◽  
Measured Data ◽  
Vertical Load ◽  
Finite Element Software ◽  
Practical Engineering ◽  
Load Action ◽  
Dualistic Structure

In this paper, based on measured data of practical engineering, the characters of single short pile under the static vertical load action in the normal stratum combination model of dualistic structure has been simulated by using ABAQUS finite element software. Then simulated result and measured one has been compared and analyzed carefully. The analysis result indicated the applicability and reliability of ABAQUS finite element software in the simulation analysis of short pile. All these can provide some theoretical reference for design of short pile foundation.

Numerical Simulation Analysis of a New Pressured Multi-Branch Bored Pile

2011 ◽  
Vol 243-249 ◽  
pp. 3167-3171 ◽  
Author(s):  
Ming Yi Zhang ◽  
Hai Lei Kou ◽  
Wei Zhang
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Cost Effective ◽  
Vertical Load ◽  
Element Analysis ◽  
Bored Pile ◽  
Tip Resistance ◽  
Technology Focus ◽  
Lateral Friction ◽  
End Bearing Pile

Pressured multi-branch bored pile is a new pile on the basis of squeezed branch reaming pile improved, it is a new pile technology focus on many advantages of the static pile, driven cast-in-place pile, belled pile and multi-branch bored pile. Pressured multi-branch bored pile has high bearing capacity, small settlement, cost-effective advantages of better. Numerical simulation of pressured double-branch pile on the vertical compression with ANSYS finite element analysis software obtained the alternate variation of the lateral friction and tip resistance of pile under the vertical load. Many branch of pile constitute multi-pivot friction and end-bearing pile, the bearing branch bear mainly bear vertical load, above branch force greater than the following branch. It is proposed recommended value about the vertical critical spacing of branch and the level spacing of pressured branch pile.

Influences of Different Long-Pile Length on Composite Foundation of Rigid-Long-Pile & Flexible-Short-Pile

2013 ◽  
Vol 641-642 ◽  
pp. 444-447
Author(s):  
Yu Fen Xu
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Theoretical Basis ◽  
Optimization Design ◽  
Composite Foundation ◽  
Foundation Settlement ◽  
Vertical Load ◽  
Finite Element Software ◽  
Pile Length

To provide a theoretical basis for the optimization design of the composite foundation, we analyzed the long-pile length of rigid-long-pile & flexible-short-pile composite foundation using finite element software ANSYS as well as the effects on the whole performance of the composite foundation. The results show that under same vertical load, foundation settlement was significantly reduced with increase of long-pile length when long-pile length is less than 20m, but when the long-pile length is more than 30 m, reduction amplitude of settlement decreases significantly. When the long-pile length increases from 10m to 30m, stress distribution of the pile is similar in shape, with slowly increase of the values. It proves that long-pile length is an important parameter affecting reliability and economy of composite foundation, foundation settlement decreases with the increase of long-pile length, but if the long-pile length is longer than the effective pile length, the settlement of composite foundation will be little change.

The Study on the Basic Theory of Gold Seamless Pipe Welding Numerical Simulation

2013 ◽  
Vol 456 ◽  
pp. 467-470 ◽  
Author(s):  
Wen Chao Qin ◽  
Jian Ru Qi ◽  
Li Xin Wang ◽  
Wei Hong Ye
Keyword(s):  
Numerical Simulation ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Three Dimensional ◽  
Field Analysis ◽  
Analysis Method ◽  
Seamless Pipe ◽  
Pipe Welding ◽  
Reasonable Choice ◽  
Gold Industry

Based on the theory of FEM, we have established a viable three-dimensional dynamic simulation of welding field analysis method, heat distribution with a double ellipse as a welding heat source, to establish a reasonable boundary conditions, which is a reasonable choice of welding numerical simulation provides a theoretical basis, laying the groundwork for welding numerical simulation analysis of the gold industry.

Sign in / Sign up

Export Citation Format

Share Document