scholarly journals DynaView: General Dynamic Visualization Model for SHM

2012 ◽  
Vol 2012 ◽  
pp. 1-13
Author(s):  
Peng Sun ◽  
Ziyan Wu ◽  
Qingyi Hua ◽  
Zhanhuai Li ◽  
Muning Kang
Keyword(s):  
Structural Damage ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Dynamic Visualization ◽  
Structure Model ◽  
Beam Structure ◽  
Visualization Process ◽  
Fuzzy Pattern ◽  
Sample Structure ◽  
General Dynamic

We present a general dynamic visualization model named DynaView to construct virtual scenes of structural health monitoring (SHM) process. This model consists of static, dynamic, and interaction submodels. It makes the visualization process dynamic and interactive. By taking an example of a simplified reinforced concrete beam structure model, we obtain raw data through the examination. We conduct the effective general and practicable assessment of structural damage conditions based on fuzzy pattern recognition to compute the assessment results. We construct the DynaView model of the sample structure and visualize it. The instance indicates that DynaView model is efficient and practically applicable.

Simulated Analysis for Strengthening RC Beam Bonding with External Steel Plate

2010 ◽  
Vol 163-167 ◽  
pp. 3745-3748
Author(s):  
Lan Ying Wu ◽  
Yan Lin Wang ◽  
Fang Hong
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
Steel Plate ◽  
Limit Load ◽  
Reinforced Concrete Beam ◽  
Beam Structure ◽  
Concentrated Load ◽  
Distributed Load ◽  
Element Simulation

Based on the reinforced concrete beam structure bonding with steel plate are consisted of different materials, the finite element model of the reinforced concrete beam structure bonding with steel plate was established using the whole model and the separated model respectively, the deformation, stress, strain and limit load of the reinforced concrete beam structure under the symmetrical concentrated load and the uniformly distributed load were studied using ANSYS. The research results show that the limit load value based on the finite element simulation is basically equal with the experimental value, there has little error between them, but within the scope of control in error, and the limit load under the uniformly distributed load is greater than the symmetrical concentrated load; The results from the whole model and the separated model are basically equal with the experimental results, which show that it’s feasible using the finite element simulation to analyze the reinforced concrete beam structure bonding with steel plate.

Damage Detection through Changes in Frequency Base on Reinforced Concrete Beam

2011 ◽  
Vol 255-260 ◽  
pp. 188-192
Author(s):  
Xiao Yu Chen ◽  
Kun Ma ◽  
Jia Quan Wu ◽  
Xiang Guo
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Structural Damage ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Finite Element Software ◽  
Large Size ◽  
Single Location ◽  
Simulation Results ◽  
Frequency Changes

The detection of the structur[1]al damage by the method of changes in frequency is limited in detecting single location of the structural damage. This paper try to solve the problems of how to detect the multi-location of the structural damages and the corresponding severity. Therefore, a simple supported large-size reinforced concrete beam in different damage conditions is simulated by the finite element software-ANSYS. Cruves of frequency changes ratio can be maped by the date of the simulation, the locations of damages and corresponding severity can be detection by judging the superposition of the intersections of many curves of the frequent changes ratio. The simulation results demonstrate that the method proposed in this paper cannot only detection the multi-locations of the structural damages accurately, but also analyze the severity of the structural damages qualitatively. Corresponding author: Makun, School of Science, Kunming University of Science and Technology, [email protected]

On-Site Determination of the Polarization Resistance in a Reinforced Concrete Beam

CORROSION ◽  
1988 ◽  
Vol 44 (10) ◽  
pp. 761-765 ◽  
Author(s):  
S. Feliu ◽  
J. A. Gonzalez ◽  
C. Andrade ◽  
V. Feliu
Keyword(s):  
Reinforced Concrete ◽  
Polarization Resistance ◽  
Concrete Beam ◽  
Reinforced Concrete Beam

Elimination of outlier measurements for damage detection of structures under changing environmental conditions

2021 ◽  
pp. 147592172199847
Author(s):  
William Soo Lon Wah ◽  
Yining Xia
Keyword(s):  
Damage Detection ◽  
Multiple Regression ◽  
Natural Frequencies ◽  
Detection Method ◽  
Detection Methods ◽  
Structure Model ◽  
Bridge Structure ◽  
Beam Structure ◽  
Dependent Variables ◽  
The Difference

Damage detection methods developed in the literature are affected by the presence of outlier measurements. These measurements can prevent small levels of damage to be detected. Therefore, a method to eliminate the effects of outlier measurements is proposed in this article. The method uses the difference in fits to examine how deleting an observation affects the predicted value of a model. This allows the observations that have a large influence on the model created, to be identified. These observations are the outlier measurements and they are eliminated from the database before the application of damage detection methods. Eliminating the outliers before the application of damage detection methods allows the normal procedures to detect damage, to be implemented. A multiple-regression-based damage detection method, which uses the natural frequencies as both the independent and dependent variables, is also developed in this article. A beam structure model and an experimental wooden bridge structure are analysed using the multiple-regression-based damage detection method with and without the application of the method proposed to eliminate the effects of outliers. The results obtained demonstrate that smaller levels of damage can be detected when the effects of outlier measurements are eliminated using the method proposed in this article.

Analysis of reinforced concrete beam with small fibre

2020 ◽  
Author(s):  
Pavlina Mateckova ◽  
Zuzana Marcalikova ◽  
David Bujdoš ◽  
Marie Kozielova
Keyword(s):  
Reinforced Concrete ◽  
Concrete Beam ◽  
Reinforced Concrete Beam ◽  
Small Fibre
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