Risk Analysis of Hydropower Construction Project Based on Fuzzy Comprehensive Evaluation

2013 ◽  
Vol 357-360 ◽  
pp. 2177-2181 ◽  
Author(s):  
Yun Na Wu ◽  
Zi Shan Hu ◽  
Ru Hang Xu
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Risk Analysis ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Quantitative Risk Assessment ◽  
Vector System ◽  
Hydropower Project ◽  
Project Risk ◽  
Hydropower Construction

Hydropower construction projects have been faced with more complex risk factors and had higher demands on technology in recent years. It is how to do the risk assessment and management that have been the focus of hydropower project management. In the basis of the analysis of risk factors of hydropower projects, this article has adopted analytic hierarchy to construct the hydropower project risk evaluation index system, and presented 9-scale method in accordance with human experience and judgment to make quantitative risk assessment of the risk factors by weight vector system. With the construction of the risk fuzzy evaluation model and the analysis by examples, it is proved that the fuzzy comprehensive evaluation method has the applicability for hydropower project risk analysis, which combined qualitative analysis and quantitative analysis to strengthen the regulation and evaluation effectiveness.

Application of Analytical Hierarchy Process to Risk Analysis of Port Construction Project

2012 ◽  
Vol 170-173 ◽  
pp. 2292-2297
Author(s):  
Jiao Zhang
Keyword(s):  
Risk Factors ◽  
Risk Analysis ◽  
Analytical Hierarchy Process ◽  
Comprehensive Evaluation ◽  
Construction Project ◽  
Fuzzy Comprehensive Evaluation ◽  
Analysis Method ◽  
Total Risk ◽  
Hierarchy Process ◽  
Port Construction

The application of analytical hierarchy process (AHP) to the risk analysis of port construction project was investigated. Firstly, the happening probabilities of various risk factors during port construction were calculated. Secondly, the aftereffects of the risks were concluded by consulting the experts. Thirdly, the weight of each risk factor was obtained by AHP. Finally, the total risk of port construction project could be evaluated by fuzzy comprehensive evaluation. This risk analysis method was applied to evaluate the total risk of a real port construction project, and the exemplification verified its feasibility.

Study of Subway Construction Risk Assessment Based on the Triangular Fuzzy Numbers

2011 ◽  
Vol 243-249 ◽  
pp. 6312-6318
Author(s):  
Ge Liu ◽  
Feng Li
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Evaluation Method ◽  
Fuzzy Numbers ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Indicator System ◽  
Triangular Fuzzy Numbers ◽  
Subway Construction ◽  
Membership Matrix

According to the characteristics of subway construction in Tianjin, a risk assessment indicator system has been established in subway construction. On the basis of traditional AHP (Analytic Hierarchy Process), the introduction of the concept of triangular fuzzy numbers evaluates the weight of risk factors in a more accurate and objective way. Adopting a fuzzy comprehensive evaluation mathematical model, by constructing membership matrix, the metro construction is not difficult to quantify the risk factors with the scientific evaluation methods. It can be proved that fuzzy comprehensive evaluation method used in subway construction process is a scientific, effective evaluation method.

scholarly journals FANPCE TECHNIQUE FOR RISK ASSESSMENT ON SUBWAY STATION CONSTRUCTION

2019 ◽  
Vol 25 (6) ◽  
pp. 599-616 ◽  
Author(s):  
Luyuan Wu ◽  
Haibo Bai ◽  
Chao Yuan ◽  
Changyu Xu
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Set Theory ◽  
Fuzzy Set ◽  
Fuzzy Set Theory ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Weight Matrix ◽  
Subway Station ◽  
Total Risk

Risk assessment is critical for the construction of the subway station to improve the risk management and reduce the additional loss. According to field investigation of safe construction, the analytical network process (ANP), fuzzy set theory and fuzzy comprehensive evaluation (FCE), a fuzzy ANP comprehensive evaluation (FANPCE) model was proposed to evaluate the risk of subway station construction in this paper. Twelve key risk factors of subway station construction were identified through literature review and questionnaires. The interdependency among risk factors were illustrated through the network structure of ANP, and then a weight matrix of single risk factors was built by comments and survey results, and the interdependent weight matrix was quantified by integrating the triangular fuzzy number into the ANP. Subsequently, the total risk rank of assessed projects can be quantified though the synthesis of weight matrices with the synthetic operator of FCE. Wu Lu Kou subway station was selected as a case study. The results imply that, construction experience, underground water, and safety consciousness have a substantial influence on construction projects and that the total construction risk of Wu Lu Kou subway station is ranked at I level. Moreover, the loss analysis of the whole construction process verifies this method. This research contributes to developing a FANPCE method to identify the risk factors with high weights, assess the risk rank of projects and appropriately respond to the results. In addition, the developed fuzzy set theory-ANP-FCE integrated network provides stakeholders a consolidated model for the risk evaluation.

Risk Assessment of City Village Reconstruction Demolition Engineering in Urban Sustainable Development

2012 ◽  
Vol 524-527 ◽  
pp. 2680-2683
Author(s):  
Xiao Jun Liu ◽  
De Xing Lan
Keyword(s):  
Risk Assessment ◽  
Sustainable Development ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Quantitative Risk Assessment ◽  
System Level ◽  
The Sustainable Development ◽  
Project Risks ◽  
Object Of Study ◽  
City Village

In the past decade, China’s urbanization speed was very quick, many villages in suburb have became city villages. City villages are dirty, chaotic, poor and without reasonable planning and design, this has became a serious problem which constraints of city sustainable development. This paper take Xi’an city village reconstruction demolition engineering projects as the main object of study, use the method of fuzzy comprehensive evaluation combined with system-level analysis in demolition of city village reconstruction project for quantitative risk assessment, identify the key risk factors, and measures proposed for the development enterprises to reduce project risks and promote the sustainable development of the city.

Risk Assessment of Gravity Dam with Machine Properties

2013 ◽  
Vol 454 ◽  
pp. 43-47
Author(s):  
Fen Hua Li ◽  
Hui Ma
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Risk Factor ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Model ◽  
Gravity Dam ◽  
Risk Assessment Model ◽  
Investigation Method ◽  
Water Conservancy

In recent years, water conservancy cause has been developing rapidly in China, the gravity dam risk assessment model has a great significance for the study. Firstly, the paper introduces risk and risk assessment. Then, the thesis uses expert investigation method to recognize the main risk factors of the project, analyze the probability and loss of risk factors of the gravity dam ; and based on the R = P × C model and fuzzy comprehensive evaluation method.Finally, we obtain the level of each risk factor, providing the basis for the prevention of the risks.

Research on the Risk Assessment in Bridge Construction Stage

2014 ◽  
Vol 1030-1032 ◽  
pp. 855-859
Author(s):  
Zhao Yu Li
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Practical Method ◽  
Bridge Construction ◽  
Construction Stage

By employing the AHP and Fuzzy Comprehensive Evaluation to analyze and quantify risk factors, this paper introduces an effective and practical method for risk assessment in the bridge construction. It also illustrates the characteristics and necessity of risk assessment in bridge construction.

Research on Risk Assessment of Reservoir by AHP-Fuzzy Comprehensive Analysis Method

2012 ◽  
Vol 430-432 ◽  
pp. 1974-1978 ◽  
Author(s):  
Lin Gang Tian ◽  
Zhi Liu
Keyword(s):  
Risk Factors ◽  
Risk Assessment ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Comprehensive Analysis ◽  
Risk Level ◽  
Analysis Method ◽  
Comprehensive Evaluation Model ◽  
Reinforcement Measures

Because of the fuzziness and uncertainty of risk factors in the risk management, using fuzzy comprehensive evaluation model for research. The model not only identifies the main risk factors of the dam, spillway, and water facility, but also quantifies the influence weight by risk factors on dangerous reservoir. The affiliate degrees of risk factors on risk level can be get on the basis of membership function. So the final overall risk level of the dam, spillway, and water facility is able to compare. It will be set the priority to reinforcement measures for dangerous reservoir.

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