Simulation Research and Application on Control Technology of Long Concrete Wall Cracks in Basement

2011 ◽  
Vol 137 ◽  
pp. 159-166
Author(s):  
Ying Zeng Zhu ◽  
Fei Gao ◽  
Jun Dong Kong
Keyword(s):  
Simulation Analysis ◽  
Integrated Control ◽  
Internal Force ◽  
Free Form ◽  
Wall Structure ◽  
Concrete Wall ◽  
Element Analysis ◽  
Simulation Research ◽  
Boundary Constraints ◽  
Engineering Practices

This paper aims at research on fundamental principles of long concrete wall cracks in basement on the basis of series basic experiments and engineering practices. Relying on typical project, we use ABAQUS finite element analysis software to conduct simulation analysis to provide evidence for integrated control of cracks. Simulation analysis results show that the reinforcement stresses has tight connections with constraint mode of structure, for instance, column side and the location connected with foundation; effective limits of boundary constraints to structure deformation and constraints of free-form deformation on long wall structure make the concentration of reinforcement stresses nearing constraint location relatively obvious; under the effects of temperature and contraction, internal force of concrete wall will be re-distributed, therefore, reinforcement stress of concrete can not directly reveal actual force distribution inside the wall, but the overall trend is close to concentrated pattern of reinforcement stress.

Numerical Simulation Analysis of the Typical Reinforced-Concrete Wall-Beam Joint

2012 ◽  
Vol 594-597 ◽  
pp. 973-976
Author(s):  
Ji Tong Jiang ◽  
Yang Liu ◽  
Wen Hui Wu ◽  
Song Yang ◽  
De Run Du
Keyword(s):  
Numerical Simulation ◽  
Reinforced Concrete ◽  
Simulation Analysis ◽  
Complex Stress ◽  
Structure Design ◽  
Structural Deformation ◽  
Wall Structure ◽  
Concrete Wall ◽  
Element Analysis ◽  
Bond Slip

Based on the existing research results, this paper has primarily researched on numerical simulation analysis of a wall-beam joint in complex stress situation in a shear wall structure, in terms of structural deformation, crack of concrete, stress-strain condition of reinforced concrete, bond-slip state of concrete of the joint. The mature finite element analysis software ANSYS is selected as a platform and the parametric design language APDL is used as the foundation. Analyze the deformation of the joint; the cracks and the development status; the strain and stress of the joint and the bond-slip condition between steel bars and concrete. Some problems existing in the results at such joint calculated by commonly-used structure design software PKPM were found to need extra attention and then the paper put forward some feasible solutions.

Lattice Concrete Wall Structure Optimization and Numerical Analysis

2011 ◽  
Vol 71-78 ◽  
pp. 1628-1632 ◽  
Author(s):  
Xian Hong Meng ◽  
Chan Fang Zhou ◽  
Jing Hai Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Bearing Capacity ◽  
Sound Insulation ◽  
Wall Structure ◽  
Optimized Design ◽  
Concrete Wall ◽  
Element Analysis ◽  
New Energy ◽  
Deformation Ability

Polystyrene formwork of lattice concrete wall is a set of lightweight, insulation, sound insulation, fireproof, bearing multi-function in one of the "EPS new energy-saving" wall structure system. Through the polystyrene formwork structure forms of optimized improvement built in construction process of collapse produced high wall plate phenomenon. Do an axial compression ratio of 0.2 lattice specimens of reinforced concrete shear wall in axis pressure and reciprocating level forces test. The damage form of that wall for wall bottom beam-column central cross core ring crack and appear "X" type crack and are crushed. The mesh wall formed strong vertical limb and weak horizontal limb，belongs to the ductility structure , and has more yield , and energy dissipation capacity , and wall overall performance is strong , and avoid brittle failure , and has good ductility、deformation ability and bearing capacity of the characteristics of big .The finite element analysis and experimental results indicated that the ultimate bearing capacity of the wall are the same. For new formworks do wall by finite element analysis, in do not affect its aseismic capacity premise that wall structure forms are optimized design.

Beam Frame Supported Shear Wall Structure Based on the ANSYS Finite Element Static Analysis of Beam-Type Transfer Floor

2013 ◽  
Vol 788 ◽  
pp. 508-510
Author(s):  
Xing Hua Cheng ◽  
Fu Ma
Keyword(s):  
Finite Element ◽  
Large Scale ◽  
Simulation Analysis ◽  
Great Influence ◽  
Shear Wall ◽  
Wall Structure ◽  
Element Analysis ◽  
Nonlinear Simulation ◽  
Beam Type ◽  
Beam Frame

This article research frame supported shear wall structure Beam-type Transfer layer at the supporting wall (across full) shape and the supporting column two structure forms, in the same form of vertical uniformly distributed load, the stress distribution variation trend and characteristics of the analyzed and discussed. Using large-scale finite element analysis software ANSYS to two different Beam-type Transfer structure of the nonlinear simulation analysis, combined with the stress nephogram of X to the analysis of two kinds of structure forms of the transfer beam and upper wall and the frame work characteristics [. The results of the study show that: In terms of the vertical stress, wall shape across the full shear wall in the stress of the beam structure performance is better, Column will produce large stress in the beam. Shear wall and stress of the transfer beam work together to transform beam has a great influence.

Simulation Research for Bar-Type Composite Wall under Certain Bias Loads

2014 ◽  
Vol 578-579 ◽  
pp. 797-800
Author(s):  
Cong Bo Li ◽  
Zhen Feng Zhan
Keyword(s):  
Middle Part ◽  
Windward Side ◽  
Wall Structure ◽  
Element Analysis ◽  
Simulation Research ◽  
Distribution Rule ◽  
The Finite Element Analysis ◽  
Composite Wall ◽  
End Wall ◽  
Type Composite

It adopts the finite element analysis method, researches the stress state of the composite wall interface of bar-type composite wall structure just under the certain bias loads. The Bar-type composite wall structure under bias load, then the stress distribution rule of the windward side and leeward surface is near with the thermal insulation layer. On the wall, the stress is larger of the upper and below part of wall, the middle part of the interface tangential stresses are zero; the upper end wall supports the maximum interfacial normal stress.

MIDAS-Based Finite Element Analysis of the Short Line Method of the Precast Segmental Bridge Construction

2014 ◽  
Vol 580-583 ◽  
pp. 3093-3097
Author(s):  
Lin Kun Guan ◽  
Xie Dong Zhang ◽  
Hui Lei
Keyword(s):  
Finite Element ◽  
Simulation Analysis ◽  
Internal Force ◽  
Light Rail ◽  
Bridge Construction ◽  
Element Analysis ◽  
Maximum Deformation ◽  
Short Line ◽  
Finite Element Software ◽  
Line Method

This paper studies the precast and cantilever erection process of pre-stressed concrete continuous beam bridge alignment control in short line method, basis on the construction of a light rail. Various stages of bridge construction performed on simulation analysis and calculated by the finite element software MIDAS, concluded the ultimate internal force and deformation values, and the maximum deformation are within the scope of design elevation deviation 20 mm allowed, as to achieve the target of bridge assembly.

Modal Analysis on Rotor of Asynchronous Traction Motor Used in High-Speed Trains

2013 ◽  
Vol 274 ◽  
pp. 374-377
Author(s):  
Si Chen ◽  
Fang Wang ◽  
Jun Ci Cao
Keyword(s):  
High Speed ◽  
Simulation Analysis ◽  
Analysis Model ◽  
Element Analysis ◽  
Traction Motor ◽  
Simulation Research ◽  
Operating Environments ◽  
High Speed Trains ◽  
Asynchronous Traction Motor ◽  
Safety Operation

According to the suffered various impacts and vibrations of traction driving part in high-speed train under complex operating environments and conditions, the modal problems in the rotor of traction motor, power output device in traction transmission system, working in high-speed trains is investigated. In this paper, a Finite Element Analysis model for rotor modal simulation research is established, by using which the influences of structure parts on motor natural frequency is analyzed. From the simulation analysis, the natural frequencies, the vibration mode and the amplitude of each order modes are obtained, which could provide a theoretical basis for the rapid, stable and safety operation of high-speed trains.

Research on the Unloading Process of Long-Span Steel Roof and the Design of Temporary Bracing Structure

2010 ◽  
Vol 163-167 ◽  
pp. 251-258
Author(s):  
Jian Hua Shao ◽  
Zai Hui Wang ◽  
Guang Ya Tao
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Simulation Method ◽  
Internal Force ◽  
Element Analysis ◽  
Long Span ◽  
Maximum Reaction ◽  
Ningxia Hui Autonomous Region ◽  
Load Carrying ◽  
Steel Roof

Unloading is a complicated process that the load-carrying condition of main structure is gradually transferred and the internal force is redistributed, and so the exact numerical simulation applied on the unloading process is crucially important. The steel roof composed of the space tubular truss with the long-span and cantilevered structure for the Helan Shan stadium at Yinchuan city in Ningxia Hui autonomous region is taken as an analytical example and the finite element analysis software SAP2000 is used to simulate the unloading process during the steel construction. The computational model is established and the simulation method is provided for investigating the detailed unloading process of steel roof. The load-carrying characteristic of every bracing point acquired by the numerical simulation analysis is applied to analyze and evaluate the structural performance under two different comparable unloading cases and then an optimized unloading scheme is achieved from these two cases. The deformation of steel roof and stress ratio of steel member at each different unloading step during the whole unloading process are presented. Ultimately, based on the preferable unloading scheme, the temporary bracing structure is designed by using the maximum reaction of bracing points when unloading.

Numerical Simulation Analysis on Interaction among Underground Structure, Shear Connectors and Retaining Piles

2013 ◽  
Vol 423-426 ◽  
pp. 1351-1356
Author(s):  
Xiao Yu ◽  
Ming Xing Luo
Keyword(s):  
Numerical Simulation ◽  
Simulation Analysis ◽  
Underground Structure ◽  
Base Plate ◽  
Internal Force ◽  
Economic Benefits ◽  
Element Analysis ◽  
Shear Connectors ◽  
The Finite Element Analysis ◽  
High Utilization

The method of retaining piles working as an anti-floating piles has advantages of lesser environmental impact, high utilization of resources and good in economic benefits, but the method effecting on underground structure was worthy of further study and exploitation. According to the practical underground projects, this paper has proposed three possible connections between underground structure, shear connectors and retaining piles. The analysis showed that the internal force and displacement of underground structural is affected distinctly by the method. In addition, characters and applicable ranges of the three different connections is introduced with the finite element analysis and calculation of stress and displacement of the main parts like base plate ,top plate ,and so on.

Application of Coupled Structural Acoustic Analysis and Sensitivity Calculations to a Tire Noise Problem

2012 ◽  
Vol 40 (1) ◽  
pp. 25-41 ◽  
Author(s):  
H. M. R. Aboutorabi ◽  
L. Kung
Keyword(s):  
Performance Improvement ◽  
Acoustic Analysis ◽  
Simulation Analysis ◽  
Analysis Method ◽  
Vehicle Manufacturer ◽  
Element Analysis ◽  
Equipment Manufacturer ◽  
Tire Noise ◽  
Fea Modeling ◽  
Testing Instruments

Abstract REFERENCE: H. M. R. Aboutorabi and L. Kung, “Application of Coupled Structural Acoustic Analysis and Sensitivity Calculations to a Tire Noise Problem,” Tire Science and Technology, TSTCA, Vol. 40, No. 1, January – March 2012, pp. 25–41. ABSTRACT: Tire qualification for an original equipment (OE) program consists of several rounds of submissions by the tire manufacturer for evaluation by the vehicle manufacturer. Tires are evaluated both subjectively, where the tire performance is rated by an expert driver, and objectively, where sensors and testing instruments are used to measure the tire performance. At the end of each round of testing the evaluation results are shared and requirements for performance improvement for the next round are communicated with the tire manufacturer. As building and testing is both expensive and time consuming predictive modeling and simulation analysis that can be applied to the performance of the tire is of great interest and value. This paper presents an application of finite element analysis (FEA) modeling along with experimental verification to solve tire noise objections at certain frequencies raised by an original equipment manufacturer (OEM) account. Coupled structural-acoustic analysis method was used to find modal characteristics of the tire at the objectionable frequencies. Sensitivity calculations were then carried out to evaluate the strength of contribution from each tire component to the identified modes. Based on these findings changes to the construction were proposed and implemented that addressed the noise issue.

Dynamic Analysis of DVG 850 High-Speed Machining Center

2012 ◽  
Vol 487 ◽  
pp. 203-207
Author(s):  
Gong Xue Zhang ◽  
Xiao Kai Shen
Keyword(s):  
High Speed ◽  
Simulation Analysis ◽  
Response Analysis ◽  
Improved Method ◽  
Analysis Software ◽  
Element Analysis ◽  
Harmonic Response ◽  
Machining Center ◽  
Calculation Results ◽  
Harmonic Response Analysis

Purpose, with the application of workbench finite element analysis software, get the analysis results of DVG 850 high-speed vertical machining center via the modal analysis and harmonic response analysis. Use the calculation results for reference, put forward the improved method, and prove the credibility of the simulation analysis by testing DVG 850 prototype.

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