Research of Bored Pile Bearing Capacity with Mud Layer

2011 ◽  
Vol 255-260 ◽  
pp. 3797-3801
Author(s):  
Xiang Dong Zhang ◽  
Xue Lei Zhang ◽  
Meng Wang ◽  
Hong Hai Zhang
Keyword(s):  
Bearing Capacity ◽  
Large Scale ◽  
Major Type ◽  
Analysis Software ◽  
Empirical Formulas ◽  
Element Analysis ◽  
Bored Pile ◽  
Bored Piles ◽  
Dimensional Simulation ◽  
Different Thickness

Bored pile as a major type of foundation, during the construction process, hole collapse or weak air tightness of catheter leads mud layers or broken pile, which makes bearing capacity reduction or even complete loss leading differential settlement of building foundations. In this paper, two-dimensional simulation of the pile has been made by finite element analysis software ADINA. By using of large-scale numerical analysis software MATLAB, the data obtained has been fitted deriving empirical formulas, which researches how different thickness and depth of mud layers impact on bearing capacity of bored piles, having a certain engineering applications.

scholarly journals Simulation and Analysis of GaN Wafer Bowing on Sapphire Substrate

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Wang Bin ◽  
Qu Yu-xuan ◽  
Hu Shi-gang ◽  
Tang Zhi-jun ◽  
Li Jin ◽  
...  
Keyword(s):  
Sapphire Substrate ◽  
Mass Production ◽  
Large Scale ◽  
Lattice Mismatch ◽  
Wafer Surface ◽  
Heteroepitaxial Growth ◽  
Analysis Software ◽  
Element Analysis ◽  
Modern Mass ◽  
The Mathematical Model

During the process of heteroepitaxial growth, if the lattice constant of the growing film differs from that of the substrate, the wafer surface bows, regardless of whether the lattice mismatch occurs or not. As the growth in large-scale wafers speeds up, bowing effects are becoming more and more important. Wafer bowing has a direct impact on the yield in modern mass-production compound semiconductor industries. By using finite element analysis software, the bowing deformation of the GaN wafer on sapphire substrate can be studied. This paper summarizes the causes of bowing deformation, builds the mathematical model, and deduces the relation equation of the wafer bowing. The results show that epitaxial wafer bowing has a linear relationship with the square of the diameter of the substrate but has little relationship with the thickness of the substrate. Moreover, the relation equation of the wafer bowing is also simplified finally.

Analysis the Influence of Non-Prestressed Reinforcement for Horizontal Bearing Capacity of PHC Pipe Pile

2014 ◽  
Vol 919-921 ◽  
pp. 649-653
Author(s):  
Pei Sheng Xi ◽  
Xiao Kai Sun
Keyword(s):  
Bearing Capacity ◽  
Poor Performance ◽  
Analysis Software ◽  
Element Analysis ◽  
Prestressing Steel ◽  
Concrete Piles ◽  
The Poor ◽  
Concrete Pile ◽  
Prestressed Reinforcement ◽  
Better Than

We analyze the configuration of the non-pretressed reinforcement impact on the level of bearing capacity of PHC piles to effectively solve the poor performance of the general bending of pretressed concrete pile,using ANSYS finite element analysis software,through configurating the pretressed concrete pile with appropriate amount of ordinary non-presressed reinforcement.The results of numerical calculation show that the performance of PHC pile bending has been greatly improved and the deflection and bending when cracking were significantly better than ordinary PHC pile with the confiuration of non-prestressed reinforcement. We also analyze the effect of non-prestressed reinforcement and prestressing steel when the concrete piles cracking,datd shows that prestressing steel reached stress yielding firstly.The results provide a theoretical basis of the application of precast piles in the foudation ditch support project.

The Test of Aircraft Material with Performance Parameters

2014 ◽  
Vol 540 ◽  
pp. 48-51
Author(s):  
Xia Ren ◽  
Lian Xiang Ma
Keyword(s):  
Large Scale ◽  
Plastic Material ◽  
Uniaxial Tensile ◽  
Uniaxial Tensile Test ◽  
Performance Parameters ◽  
Analysis Software ◽  
Element Analysis ◽  
Aircraft Material ◽  
Yeoh Model ◽  
Experimental Data Analysis

This paper uses the ABAQUS finite element analysis software for modeling and nonlinear analysis of aircraft tires. Paper H44.5 × 16.5-21 aviation tires, The plastic material of the tire subjected to uniaxial stretching to obtain a rubber such as Young's modulus, Poisson's ratio of the material parameters. Uniaxial tensile test tests the tensile properties of the rubber, the use of large-scale numerical calculations and fitting analysis of the experimental data analysis software Matlab, Yeoh model mechanical parameters.

The Finite Element Analysis on Axial Tensile Bearing Capacity of Round Steel-Tubes Reinforced with CFRP Sheets

2011 ◽  
Vol 368-373 ◽  
pp. 1595-1599
Author(s):  
Xiu Li Wang ◽  
Jun Jie Li
Keyword(s):  
Finite Element ◽  
Bearing Capacity ◽  
Large Scale ◽  
Steel Tubes ◽  
Element Analysis ◽  
Cfrp Sheets ◽  
Finite Element Software ◽  
Axial Tensile ◽  
The Finite Element Analysis ◽  
Circumferential Reinforcement

The numerical simulation calculation on round steel-tubes reinforced with CFRP sheets was done through the large-scale finite element software ANSYS. In this research, four factors were comparatively analyzed so as to obtain the influence of them on ultimate axial tensile bearing capacity of steel-tubes. These four factors are longitudinal reinforcement length rate , thickness , elastic modulus and circumferential reinforcement ways of CFRP sheets. The results show that the ultimate axial tensile bearing capacity of steel-tubes strengthened with CFRP sheets is enhanced significantly and the reinforcement effect is very good.

scholarly journals Settlement and bearing capacity of the circular foundation

2018 ◽  
Vol 196 ◽  
pp. 03019 ◽  
Author(s):  
Zaven Ter-Martirosyan ◽  
Vitalii Sidorov
Keyword(s):  
Critical Load ◽  
Bearing Capacity ◽  
Cross Section ◽  
Strain State ◽  
Circular Cross Section ◽  
Stress Strain ◽  
Bored Pile ◽  
Bored Piles ◽  
Design Case ◽  
Base Soil

In process of designing foundations of circular form in plane, as well as bored piles of circular cross section, there is important to quantify the stress-strain state and the bearing capacity of the soils interacted with the foundations, as well as under the toe of piles. The article presents the formulation and solution of the problem of determining the initial critical load at the base of the circular foundation, which is also relevant for the design case of the soil under the toe of a circular bored pile. It is shown that the condition of limiting equilibrium arises both under the center of the loaded area and on the contour of the circular loading area, and primarily on the contour. A comparative estimate showed that the ratio of the initial critical load to the base soil of the circular foundation under the center of the site is 2 times greater than the corresponding load for the point at the edge of the site.

Research on PET Beer Bottle Structural Parameters and it’s Strength

2013 ◽  
Vol 641-642 ◽  
pp. 488-491
Author(s):  
Wei Yuan ◽  
Li Hua Xie ◽  
Gai Mei Zhang ◽  
Da Zhi Liao ◽  
Jian Dong Lu
Keyword(s):  
Mechanical Properties ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Boundary Conditions ◽  
Internal Pressure ◽  
Structural Parameters ◽  
Analysis Software ◽  
Element Analysis ◽  
Main Factors ◽  
Different Thickness

According to the formula of the resistance to internal pressure, the main factors of the strength of the beer bottles are analyzed. Using ANSYS finite element analysis software, PET beer bottles damaged boundary conditions are determined. PET beer bottle model is established, and have the stress analysis. The internal pressure and the bottle top pressure are applied on PET beer bottles. PET beer bottles strain is analyzed in two loads with different thickness and different bottle diameter. Thickness and bottle diameter influence of the mechanical properties of PET beer bottles are obtained. It provides a method and basis of the structure to optimize the design of PET beer bottles.

Linear Statics Analysis of the Connecting Rod of a Certain Type of Continuous Mill with Mechanics Properties

2012 ◽  
Vol 252 ◽  
pp. 98-101
Author(s):  
Chang Ping Zou ◽  
Xiao Feng Zhang ◽  
De Rong Cheng ◽  
Xu Zhi Lu
Keyword(s):  
Large Scale ◽  
Integrated Design ◽  
Continuous Mill ◽  
Connecting Rod ◽  
Analysis Software ◽  
Element Analysis ◽  
Fea Model ◽  
3D Fea ◽  
Set Up ◽  
3D Solid

The connecting rod of a certain type of continuous mill early produces crackle,cannot work,hindering the production.The authors are entrusted with the 3D Finite Element Analysis (FEA) of the connecting rod.On SUN workstation,utilizing the large scale Integrated-Design Engineering Analysis Software,I-DEAS,the authors have constructed accurate 3D solid model of the connecting rod,set up effective 3D FEA model,found the solution of several kinds of law of stress distribution and deformation,reached valuable conclusions.

Rack and Pinion Lifting Device Structural Design of Large-Scale Dynamic Sculpture

2009 ◽  
Vol 628-629 ◽  
pp. 299-304
Author(s):  
C.Y. Lv ◽  
W.W. Shi ◽  
Xian Hai Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Structural Design ◽  
Large Scale ◽  
Analysis Software ◽  
Element Analysis ◽  
The Finite Element Analysis

The design of lifting device for a large-scale dynamic sculpture at tourist district was introduced. According to its own characteristics of lift device, the "back-to-back" style of rack and pinion for the lift system was designed. It was used the finite element analysis software to analyze the strength of the rack and pinion which is a key part of the lift device. According to the stress of dedendum for the pinion is too bad, it was proposed that increased the radius of the fillet for dedendum.

The Discussion about Improving the Bearing Capacity of Single Pile for Bored Pile in Sandy and Silt Layer

2013 ◽  
Vol 351-352 ◽  
pp. 1469-1473
Author(s):  
Yu Qin Feng ◽  
Ying Hao Wang
Keyword(s):  
Bearing Capacity ◽  
Inner Mongolia ◽  
Optimization Design ◽  
Load Test ◽  
Single Pile ◽  
Engineering Project ◽  
Bored Pile ◽  
Bored Piles ◽  
Ultimate Resistance ◽  
Silt Layer

The bored pile which have the unique advantage in having no noise, no shake, no upheaval, no sides way in the process of construction has became into one of the most widely used pile foundations in high heavy construction in Inner Mongolia region. Through an engineering project of bored piles in Inner Mongolia region, this article takes an analysis for bearing behavior of the bored piles in sandy and silt layer in this region. It also discusses the influence construction technology on pile-end ultimate resistance and the reasonable range of reduction factor of the ultimate resistance. When the soil layers structure is similar, it could improve bearing capacity of single pile for bored pile by utilizing the supporting layer and substratums optional regrouping. Utilize traditional single pile bearing capacity theory formula calculating and the static load test results it takes an analysis, finding out the approach of improving the bearing capacity of single pile for bored pile in sandy and silt layer. So we could find the optimization design for pile foundation bearing capacity of bored pile and thus promote the improvement in bored piles theory research and engineering application level in Inner Mongolia region and provide theory and engineering design experience.

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