scholarly journals Numerical Simulation Analysis of Rigid Permeable Plate Embedded in Abutment Back

2019 ◽  
Vol 136 ◽  
pp. 04060
Author(s):  
Li Dong ◽  
Yue Gong ◽  
Yi Zhang
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Simulation Analysis ◽  
Geotechnical Engineering ◽  
Scientific Basis ◽  
Void Volume ◽  
Stress And Strain ◽  
Analysis Software ◽  
Permeable Plate ◽  
Engineering Stress

In order to solve the problem of bumping at bridge head of bridges in our country and reduce the void volume of bridge end transition slab, the method of embedding rigid permeable plates is proposed in this paper. Combined with different engineering situations and using geotechnical engineering stress and strain professional analysis software SIGMA/W to model, the performance and engineering applicability of rigid permeable plates are numerically simulated. The results show that the bearing capacity of rigid permeable plate meets the engineering load requirements and is in line with the engineering applicability; Embedding rigid permeable plate can effectively reduce the void volume of bridge end transition slab, especially when the compactness of abutment back is lower, the effect of rigid permeable plate on reducing the void volume of bridge end transition slab is more obvious. The proposed method of embedded rigid permeable plate provides valuable theoretical and scientific basis for solving the problem of bridge head jumping.

scholarly journals Numerical simulation of complex tubular joints of Beijing New Airport Terminal C type column

2019 ◽  
Vol 138 ◽  
pp. 01001
Author(s):  
A Zhang ◽  
G Shangguan ◽  
Yanxia Zhang ◽  
Dinan Shao
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Failure Modes ◽  
Mechanical Performance ◽  
Simulation Analysis ◽  
Economic Benefits ◽  
Tubular Joints ◽  
Airport Terminal ◽  
Stiffening Ribs ◽  
Final Optimization

The numerical simulation analysis of the two groups of fullscale complex tubular joints of the Beijing New Airport Terminal C type steel column under space static loading tests has been conducted by adopting software ABAQUS. The results obtained from the numerical simulation analysis consistent with those from the tests which enriched the research findings. Based on the research, mechanical performance of the joints has been carried out, the failure modes and ultimate bearing capacity of the joints with no stiffening ribs, three stiffening ribs and five stiffening ribs has been obtained. The numerical simulation results showed that, the bearing capacity of the joints without stiffening ribs were relatively low, the plastic failure of the main pipe was the major form of the destruction and the safety performance were too poor to meet the actual needs of the project. The bearing capacity of the joints significantly improved with the stiffening ribs set inside and the destruction changed to the connection of the main tubular and the branch, which means that the stress of the joints has been obviously improved by the setting of the stiffening ribs and was able to meet the needs of Beijing New Airport Terminal C type column. Through the comparative analysis of the stiffening ribs setting, it can be found that the bearing capacity of the joints were similar between the three and five stiffening ribs, considering the construction difficulty and economic benefits, three stiffening ribs has been selected as the final optimization result.

Tool with Heavy-Duty Machining Tube Section of the Fatigue Analysis

2011 ◽  
Vol 188 ◽  
pp. 344-347 ◽  
Author(s):  
Zhong Guang Yu ◽  
Xian Li Liu ◽  
Yuan Sheng Zhai ◽  
Geng Huang He ◽  
M. Li
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Structural Design ◽  
Stress Condition ◽  
Cutting Tool ◽  
Simulation Analysis ◽  
Heavy Duty ◽  
Analysis Software ◽  
Tool Stress ◽  
Lathe Tool

Because the tube festivals surface is not round, uneven, so the cutting tool is under impact unceasingly in cutting process. Cutting tool is extremely easy to have fatigue failure, therefore it is very necessary to use finite element numerical analysis software ANSYS to carry on numerical simulation analysis for heavy lathe tool intensity static. The force of cutting tool and distributed rule of definite cutting tool internal stress strain could be precisely got by using FEM, thus the analysis results could improve cutting tool stress condition and the structural design provides the theory basis

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 of Roadway Deformation of Different Cutting Aperture

2013 ◽  
Vol 340 ◽  
pp. 892-895
Author(s):  
Xue Min Gong ◽  
Jia Yong Zhang ◽  
Li Wen Guo
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Wall Rock ◽  
Rock Stress ◽  
Analysis Software ◽  
Pressure Relief ◽  
Element Analysis ◽  
Gas Seepage ◽  
The Face ◽  
Roadway Deformation

Using ANSYS finite element analysis software, the crushing effect and wall rock deformation of a small high-pressure jet impacting coal were given numerical simulation analysis. It verified that impacting increased exposed area of coal in punch, providing conditions for pressure relief of internal coal seam and gas seepage. through comprehensive analysis of the rock stress and coal displacement of different roadway models after undercutting, it was determined that aperture size was 4/15 or so of roadway floor length, thus roadway fissures developed full, and maintained rock integrity, in favor of speeding up the face driving.

Cause Analysis and Influence Evaluation of Cracks in Thick Slab Construction

2021 ◽  
Author(s):  
Yi Guixiang ◽  
Li Liang
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Nuclear Power ◽  
Load Transfer ◽  
Simulation Analysis ◽  
Simulation Method ◽  
Cause Analysis ◽  
Floor Slab ◽  
Maintenance Process ◽  
Crack Interface

Abstract Cracks were found in the slab of a nuclear power plant when the formwork was removed. By means of ultrasonic testing, water storage test and crack width detection, the fracture distribution, depth and width characteristics are determined. On this basis, the numerical simulation analysis of hydration heat in the maintenance process is carried out to simulate the possible crack generation and distribution of the floor slab in the maintenance process. The simulation result shows that cracks under the combined action of temperature and shrinkage are consistent with the cracking characteristics of floor slab. Through numerical simulation of the cracked floor and intact floor, the change of the out of plane bearing capacity (bending and shear) of the cracked floor is compared and analyzed. In the model, considering the reduction of the bearing capacity at the crack section and the change of load transfer effect at the crack interface, the concrete model is disconnected according to the known opening situation, and the contact relationship is set on the crack interface to simulate the crack. Through comparative analysis, the mechanical properties of the cracked floor are evaluated, and the refined numerical simulation method of the working components with cracks is proposed. This paper can provide guidance for the cause analysis and influence evaluation of similar thick plate cracking phenomenon.

Simulation Analysis and Process Control of an Arch Bridge for Replacement of Tie Bars

2011 ◽  
Vol 90-93 ◽  
pp. 1720-1725
Author(s):  
Si Tian Chen ◽  
Ting Ting Yang ◽  
Li Qun Wu
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Simulation Analysis ◽  
Steel Tube ◽  
Nonlinear Finite Element ◽  
Bridge Structure ◽  
Control Parameters ◽  
Analysis Software ◽  
Element Analysis

The numerical simulation analysis, by using senior nonlinear finite element analysis software MSC.Marc, was achieved in this paper for the tie-replacing procedures of a steel tube tied-arch filled with concrete. Through this analysis, the control parameters were accurately determined for the installing of new ties and the removing of old ties. Results of numerical analysis ensured the bridge structure stable during the replacement, made the construction of safe and convenient, and played a guiding role in the maintenance and reinforcement. The successful experience could be referenced by other similar projects.

Numerical Simulation Analysis of Pullout Test of Planting Steel - A New Reinforcement Technique

2010 ◽  
Vol 163-167 ◽  
pp. 3739-3744
Author(s):  
Jian Chun Mu ◽  
Hui Feng Xi ◽  
Yong He Wu ◽  
Sheng Qiang Li ◽  
Guo Hui Yang
Keyword(s):  
Numerical Simulation ◽  
Bearing Capacity ◽  
Theoretical Basis ◽  
Simulation Analysis ◽  
Engineering Application ◽  
Pullout Test ◽  
Ultimate Bearing Capacity ◽  
Stress Curve

The paper proposed a new reinforcement technique-planting steel technique. By numerical simulation analysis of planting steel, the load – slip curve, the load – stress curve and others were obtained. Meanwhile, ultimate bearing capacity of angle was calculated, and the ultimate bearing capacities with the same model at different anchorage depths were compared. With the anchorage depth increased, the ultimate bearing capacity increased too. But while the anchorage depth increased to a certain value, the ultimate bearing capacity no longer increased. All these provided a theoretical basis for the engineering application of planting steel technique.

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