Method of Damage Evaluation of Long-Span Arch Bridge Subjected to Blast Loading

2012 ◽  
Vol 178-181 ◽  
pp. 2405-2411
Author(s):  
Li He ◽  
Yong Jiu Qian
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Highway Bridges ◽  
Fuzzy Comprehensive Evaluation ◽  
Technical Condition ◽  
Damage Evaluation ◽  
Arch Bridge ◽  
Long Span ◽  
Arch Bridges

A variety of conventional weapons equipped with explosive are used to destroy the significant long-span arch bridge. Because of the special function of the weapons and the complexity of the arch bridge, the damage results with the features of uncertainty and fuzzy are assessed with fuzzy theory. Combined with the standards for technical condition evaluation of highway bridges and wartime specific requirements, the fuzzy mathematical model based on the fuzzy mathematics theory and method is established to judgment comprehensively the arch technical condition. The hirarchy fuzzy comprehensive evaluation method is applied to determine the technical state grade of the damaged arch bridge. The method of damage evaluation provides the effective reference for the emergency repairmen of the arch bridges.

Application of Fuzzy Comprehensive Evaluation Method in Long-Span Arch Bridge Damaged in Wartime

2012 ◽  
Vol 538-541 ◽  
pp. 940-944
Author(s):  
Li He ◽  
Yong Jiu Qian
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Blast Loading ◽  
Fuzzy Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Arch Bridge ◽  
Comprehensive Evaluation Method ◽  
Long Span ◽  
Main Factors ◽  
Damage Condition

In order to quickly assess the damaged long-span arch bridge in wartime, fuzzy comprehensive evaluation method (FCEM) is applied. Considering the main factors of strength, stiffness and stability, ignoring durability and applicability, the damage performance evaluation elements of long-span arch bridge subjected to blast loading are concluded. Combined with the specific long-span arch bridge subjected to blast loading, the damage condition is assessed with FCEM. For illustration, a highway arch bridge damaged in wartime is utilized to show the feasibility of FCEM. Because of the damaged features of uncertainty and fuzzy, FCEM can effectively assess the damaged conditions of a long-span arch bridge.

Risk early warning management and intelligent real-time system of financial enterprises based on fuzzy theory

2020 ◽  
pp. 1-11
Author(s):  
Qiaoying Ding
Keyword(s):  
Real Time ◽  
Early Warning ◽  
Financial Risk ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Fuzzy Comprehensive Evaluation ◽  
Real Time System ◽  
Enterprise Risk ◽  
Early Warning Management

The financial market is changing rapidly. Since joining the WTO, our country’s financial companies have faced pressure from dual competition at domestic and abroad. The complex internal and external environment has forced financial enterprise managers to improve risk prevention awareness, early warning and monitoring, so as to responding to emergencies and challenges in the financial market. However, traditional forecasting and analysis methods have problems such as large workload, low efficiency, and low accuracy. Therefore, this article applies intelligent computing to the forecast of financial markets, using related concepts of fuzzy theory and Internet intelligent technology, and proposes to establish a model system for financial enterprise risk early warning management and intelligent real-time monitoring based on fuzzy theory. This article first collected a large amount of data through the literature investigation method, and made a systematic and complete introduction to the related theoretical concepts of fuzzy theory and financial risk early-warning management, has laid a sufficient theoretical foundation for the subsequent exploration of the application of fuzzy theory in financial enterprise risk early warning management and intelligent real-time systems; Then a fuzzy comprehensive evaluation method that combines the analytic hierarchy process and fuzzy evaluation method is proposed, taking a listed company mainly engaged in automobile sales in our province as a case, the company’s financial risk management and modeling experiment of the intelligent real-time system; Finally quoted specific cases again, used the fuzzy comprehensive evaluation method to carry out risk warning and evaluation on the PPP projects of private enterprises in our province, and concluded that the project risk score is between 20-60, which is meet the severe-medium range in the risk level. Research shows that the use of fuzzy theory and modern network technology can make more accurate warnings and assessments of potential and apparent risks of financial enterprises, greatly improving the safety of financial enterprise management and reducing the losses caused by various risks.

Fuzzy Comprehensive Evaluation of Water Quality Management Information System

2014 ◽  
Vol 1044-1045 ◽  
pp. 486-489
Author(s):  
Xin Wang ◽  
He Pan
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Water Quality Management ◽  
Water Environment ◽  
Prediction Method ◽  
Fuzzy Comprehensive Evaluation ◽  
Good Choice ◽  
Water Resources Protection ◽  
Set Up

Water environment assessment is a basic and important work of water resources protection. We set up a fuzzy comprehensive evaluation of water environment based on fuzzy theory and prediction method in this paper. The comprehensive assessment of water environmental quality relates to complicated phenomena and interaction of multi-factor of evaluation. There are plenty of fuzzy phenomena and fuzzy concepts, therefore, make quantitative processing by the comprehensive evaluation method of fuzzy is a good choice to get good results.

The Environmental Impact Assessment of Power Transmission Project Based on Fuzzy Theory

2011 ◽  
Vol 281 ◽  
pp. 195-200
Author(s):  
He Rui Cui ◽  
Da Fang Qiu ◽  
Lu Chen
Keyword(s):  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Evaluation Method ◽  
Power Transmission ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Weighted Average ◽  
Fuzzy Comprehensive Evaluation ◽  
Environment Impact

As environment impact has become the important constraining factors to the power transmission project, so it is necessary to expand the scope of environmental impact assessment (EIA) to provide some information to relevant departments for decision-making. This paper selected fuzzy comprehensive evaluation method to assess the environmental impact, which is fit for the uncertainties of the EIA. The results show that the project's impact on the environment is satisfactory and it still exists insufficient in environment protection and the improvement is still potential. The innovation of this paper is to assign the comprehensive evaluation vector by considering the weighted average confidence degree of the comments set-valued, so it can calculate the assessment values more accurately.

scholarly journals Research on Safety Risk Assessment Method of Highway Bridge Construction Based on AHP-Fuzzy Comprehensive Evaluation

2021 ◽  
Vol 248 ◽  
pp. 03020
Author(s):  
Zhuang Guofeng
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Highway Bridges ◽  
Fuzzy Comprehensive Evaluation ◽  
Construction Safety ◽  
Risk Level ◽  
Bridge Construction ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Safety Risk ◽  
Comprehensive Evaluation Method

The quality of road and bridge engineering is directly related to the safety of the transportation industry. In the construction of highway bridges, it is particularly important to strictly control the construction quality. Combining the analytic hierarchy process and the fuzzy comprehensive evaluation method, the AHP-fuzzy comprehensive evaluation method is used to obtain the current road bridge construction safety risk level. According to the different risk levels, effective measures should be taken to avoid unsafe accidents. On this basis, historical risk cases can be analyzed to find problems in the safety assessment of highways and bridges, and effective construction safety management and control measures can be put forward to ensure the vigorous development of my country’s highway and bridge industry.

Reliability Evaluation of Thermal Power Units Operation Based on Grey Fuzzy Theory

2013 ◽  
Vol 805-806 ◽  
pp. 725-729
Author(s):  
Zi Xue Guo ◽  
Nan Nan Liu ◽  
Xin Lu
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Evaluation Model ◽  
Thermal Power ◽  
Fuzzy Comprehensive Evaluation ◽  
Reliability Evaluation ◽  
Operational Reliability ◽  
Evaluation Index System ◽  
Comprehensive Evaluation Method

The thermal power units operational reliability is the fundamental guarantee of smooth operation of electricity system. According to the problem of thermal power units operational reliability evaluation, a comprehensive evaluation method is put forward based on grey fuzzy theory. Firstly, this paper establishes an evaluation index system by the analysis of factors affecting the reliability of thermal power units. And then a reliability evaluation model of thermal power units operation is built based on grey fuzzy comprehensive evaluation which combined with the grey cluster theory and the fuzzy algorithm. At last, the numerical example is shown to verify the feasibility of the grey fuzzy comprehensive evaluation method.

Faults Evaluation Method Based Fuzzy Theory in Distribution System

2011 ◽  
Vol 383-390 ◽  
pp. 4079-4083
Author(s):  
Tian Shi Wang
Keyword(s):  
Distribution System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Fuzzy Comprehensive Evaluation ◽  
Scientific Evaluation ◽  
Safe Operation ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Safety And Reliability

All the factors causing distribution system faults are analyzed for improving safety and reliability of power system. Comprehensive and scientific evaluation for distribution system faults are made by fuzzy comprehensive evaluation method and the ordering is done by their severities. This method is able to monitor the distribution system safety and reliability and give reference for distribution system condition-based maintenance, thus improve the ability of distribution system safe operation.

Study of Complex Ability Evaluation Model of University Students Based on Fuzzy Theory

2014 ◽  
Vol 488-489 ◽  
pp. 1340-1343
Author(s):  
Xiao Guang Li ◽  
Ping Ping Xiao
Keyword(s):  
University Students ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Human Mind ◽  
Important Means ◽  
Ability Evaluation

Complex ability evaluation of university students is an important means of training talents to the related teaching department, and it has a very important role to improve the training quality of university and the quality of teaching. In this paper, by analyzing of the disadvantages of traditional evaluation method, an evaluation model is put forward a kind of based on fuzzy comprehensive evaluation of university student' complex ability, and give the evaluation model of the specific composition and the corresponding algorithm. The model is better than common evaluation tools to weigh the various factors in the case of making information not lossing. It can naturally deal with the initiative and fuzziness of the human mind, so it makes the every student evaluated get an objective and fair evaluation result.

The Safety Assessment of Buildings Based on Integrated AHP and Fuzzy Comprehensive Evaluation

2010 ◽  
Vol 168-170 ◽  
pp. 2672-2677
Author(s):  
Hui Min Li ◽  
Xing Run Zhong ◽  
Xia Jiao ◽  
Tan Xiao
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Theory ◽  
Evaluation Model ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Evaluation Index System ◽  
The Third ◽  
Comprehensive Evaluation Model

To effectively evaluate the safety of houses and buildings, and its owners, users and managers in the usage and management of the process to provide guidance, establish the detailed impact of the third-level buildings safety evaluation index system. Based on the fuzzy theory, used AHP to determine the weight of each index and establish a housing building security fuzzy comprehensive evaluation model. Use this model to execute the security of a middle school as an example and the results shows that the evaluation method is feasible, scientific and reasonable.

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