Construction Safety Evaluation Based on Extension Theory

2011 ◽  
Vol 368-373 ◽  
pp. 1273-1277
Author(s):  
Mao Sheng Yang ◽  
Lei Liu
Keyword(s):  
Evaluation Method ◽  
Safety Evaluation ◽  
Element Model ◽  
Construction Safety ◽  
Building Construction ◽  
Extension Theory ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Matter Element Model ◽  
Hierarchy Process

In order to assess the standardization of safety accurately and objectively, this paper establishes the safety evaluation index system for the building construction according to engineering experience. The weight of each index is decided reasonably by the Analytic Hierarchy Process. Based on extension theory, the evaluation matter —element model for evaluation of construction safety is established, and the extensional evaluation method with correlative functions is put forward. Thus, construction safety is systematically evaluated. Finally it verified by project example, the result proves its feasibility.

Analysis of the Safety Factors of Municipal Road Undercrossing Existing Bridge Based on Fuzzy Analytic Hierarchy Process Methods

2021 ◽  
pp. 036119812110318
Author(s):  
Yonghong Yang ◽  
Yu Chen ◽  
Zude Tang
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Safety Factors ◽  
Analytic Hierarchy ◽  
Road Engineering ◽  
Existing Bridges ◽  
Hierarchy Process ◽  
Engineering Projects

Increasing traffic volume and insufficient road lanes often require municipal roads to be reconstructed and expanded. Where a road passes under a bridge, the reconstruction and expansion project will inevitably have an impact on the bridge. To evaluate the safety impact of road engineering projects on bridges, this paper evaluates the safety of the roads and ancillary facilities of highway bridges involved in municipal road engineering projects. Based on a comprehensive analysis of the safety factors of municipal roads undercrossing existing bridges, a fuzzy comprehensive analytic hierarchy process (AHP) evaluation method for the influence of road construction on the safety of existing bridges is proposed. First, AHP is used to select 11 evaluation factors. Second, the target layer, criterion layer, and index layer of evaluation factors are established, then a safety evaluation factor system is formed. The three-scale AHP model is used to determine the weight of assessment indexes. Third, through the fuzzy comprehensive AHP evaluation model, the fuzzy hierarchical comprehensive evaluation is carried out for the safety assessment index system. Finally, the fuzzy comprehensive evaluation method is applied to the engineering example of a municipal road undercrossing an existing expressway bridge. The comprehensive safety evaluation of the existing bridge reflects the practicability and feasibility of the method. It is expected that, with further development, the method will improve the decision-making process in bridge safety assessment systems.

Design of Expressway Construction Safety Evaluation System Based on AHP

2014 ◽  
Vol 989-994 ◽  
pp. 5300-5303
Author(s):  
Hai Lin Guo ◽  
Zhi Ning Wang ◽  
Li Xin Zhang ◽  
Liu Xiao
Keyword(s):  
Evaluation System ◽  
Safety Evaluation ◽  
Construction Safety ◽  
Security Evaluation ◽  
Scoring Method ◽  
Analytic Hierarchy ◽  
Modern Computer ◽  
The Index System ◽  
Expressway Construction ◽  
Hierarchy Process

Chinese expressway construction security situation is grim at present. Based on the index system, determining the importance of every factor on each level by the experts scoring method and 1-9 scale law. A expressway construction security evaluation system is designed and developed using Analytic Hierarchy Process (AHP) and the modern computer-aided technology, and finally validated. The results show that this system accurately indicated the safety situation of expressway construction, and realize systematism, standardization and automatization of safety evaluation.

scholarly journals Reliability Evaluation of Water-Rich Loess Tunnel with Lining Crack Based on Extension Theory

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Xiaohui Xue ◽  
Jun Zhang ◽  
Xinxing Zhou
Keyword(s):  
Evaluation Method ◽  
Evaluation Model ◽  
Crack Depth ◽  
Laser Scanner ◽  
Reliability Evaluation ◽  
Extension Theory ◽  
Analytic Hierarchy ◽  
Prevalent Disease ◽  
Safety And Reliability ◽  
Hierarchy Process

Crack is the most prevalent disease of water-rich loess tunnels, which impacts the tunnel safety and reliability. The study aimed to investigate the multi-index of tunnel lining crack based on extension theory and reliability evaluation. A new evaluation model was built, and the matter-element concept was used to describe the reliability of a water-rich loess tunnel with lining crack. Crack width, crack depth, crack length, crack geometry, and water seepage of the Qiaoyuan tunnel were measured by intelligent crack measuring instrument, 10 m tape, laser scanner, and dosing cup. According to the analytic hierarchy process (AHP), the judgment matrix could be used to describe the relative importance of each index. Combining the maximum eigenvalue with checking consistency, the weight coefficients of 5 factors were calculated. A probabilistic statistic method and comparison of specification are performed to confirm the validity of extension theory in reliability evaluation. The results showed that the extension theory provided a reliability evaluation method of a water-rich loess tunnel with lining crack.

Comprehensive Evaluation on Multiple Constraint Elements of City Underground Space Development and Utilization Based on Analytic Hierarchy Process and Fuzzy Comprehensive Evaluation Method

2013 ◽  
Vol 357-360 ◽  
pp. 2754-2758
Author(s):  
Chang An Zhou ◽  
Can Chen ◽  
Hong Ren
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Underground Space ◽  
Analytic Hierarchy ◽  
Comprehensive Evaluation Method ◽  
Multiple Constraint ◽  
Development And Utilization ◽  
Hierarchy Process

According to constraint elements more and more appearing in the comprehensive forms, and at present it only considers that single constraint element of city underground space development and utilization has been unable to reflect the actual situation. On the basis of the main characteristics of city underground space development and utilization, this paper aims to analyze various factors which may cause the consequence and the frequency of appearance, and to construct evaluation index system of city underground space development and utilization which is composed of 5 one-level indexes, 20 two-level indexes of evaluation index system of multiple constraint factors of city underground space development and utilization, and to use the analytic hierarchy process and fuzzy comprehensive evaluation method to analyze and evaluate the influence on city underground space development and utilization. Analysis of the example application shows that, it only considers single constraint element of city underground space development and utilization is not comprehensive, and not science, and it needs to consider the correlation between various constraint elements.

Application of Extenics Theory to Accuracy Evaluation of Machining Center

2013 ◽  
Vol 397-400 ◽  
pp. 135-139
Author(s):  
Chen Liu ◽  
Xiang Li Bu
Keyword(s):  
Set Theory ◽  
Element Model ◽  
Accuracy Evaluation ◽  
Practical Application ◽  
Analytic Hierarchy ◽  
Evaluation Indexes ◽  
Machining Center ◽  
Relational Degree ◽  
Matter Element Model ◽  
Hierarchy Process

The matter-element model for the accuracy evaluation of the machining center is established based on extenics theory, the accuracy evaluation indexes of machining cente are made of multiple elements. The relational degree is calculated by introducing the relational function in the extension set theory, and the weights of evaluation indexes are defined with AHP (the analytic hierarchy process), so the awaiting evaluation machining center is determined though the accuracy grade. A type of machining center as an example is studied the practical application of the proposed method, the result is reasonable and shows that the method possesses a certain practicability.

Research on Green Degree Evaluation of Reverse Logistics System Based on Fuzzy Comprehensive Evaluation Method

2012 ◽  
Vol 524-527 ◽  
pp. 3750-3753 ◽  
Author(s):  
Zhan Feng Zhou
Keyword(s):  
Reverse Logistics ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Analytic Hierarchy ◽  
Logistics System ◽  
Fuzzy Comprehensive Evaluation Method ◽  
Comprehensive Evaluation Method ◽  
Hierarchy Process

Implementation of reverse logistics is the foundation of developing circular economy and realizing sustainable development. According to the characters of green logistics, multi level evaluation index system of green degree of reverse logistics system is built in this paper, the weight of each index is determined by using the analytic hierarchy process, the system green degree is evaluated by applying the fuzzy comprehensive evaluation method and the result is analyzed. The result shows that the method is simple, accurate and has a good application.

scholarly journals Research on Comprehensive Evaluation Method of Distribution Automation Equipment Testing Results Based on Analytic Hierarchy Process and CRITIC Method

2021 ◽  
Vol 256 ◽  
pp. 01027
Author(s):  
Youzhuo Zheng ◽  
Yu Fu ◽  
Xiaobing Xiao
Keyword(s):  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Distribution Automation ◽  
Analytic Hierarchy ◽  
Comprehensive Evaluation Method ◽  
Automation Equipment ◽  
Equipment Testing ◽  
Hierarchy Process

To utilize the objective information of index data and consider the important role of subjective judgment in the evaluation of distribution automation equipment testing results, a comprehensive evaluation method based on AHP (Analytic Hierarchy Process) and CRITIC (CRiteria Importance Through Intercriteria Correlation) method is proposed. Firstly, an evaluation index system of distribution automation equipment testing results considering seven big indicators and thirty-six small indicators is established. Secondly, AHP and CRITIC method are adopted to solve a practical evaluation problem of distribution automation equipment testing results. The subjective weights of each evaluation index are calculated by AHP, the objective weights of each evaluation index are calculated by the CRITIC method. Then, to achieve the sorting of distribution automation equipment testing results accurately, the comprehensive weights are obtained by combining the two weights. Finally, the analysis and comparison of case studies show that the proposed evaluation index system can accurately reflect the performance of distribution automation equipment and the comprehensive evaluation method of distribution automation equipment testing results which comprehensively considers the subjective comprehensive evaluation results.

A Comprehensive Analysis Method Based on Fuzzy Hierarchy for the Safety Assessment of Overhead Traveling Crane

2010 ◽  
Vol 20-23 ◽  
pp. 196-201
Author(s):  
Ge Ning Xu ◽  
Fan Jiang
Keyword(s):  
Safety Assessment ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Safety Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Assessment Method ◽  
Assessment Model ◽  
Analytic Hierarchy ◽  
Set Up ◽  
Hierarchy Process

By combined fuzzy comprehensive evaluation with AHP (Analytic Hierarchy Process) together, a safety assessment model for overhead traveling crane is set up in regard to deficiency of safety assessment method for crane at present, which can evaluate safety of overhead traveling crane in-service qualitatively and quantitatively. Through a safety analysis and assessment on general overhead traveling crane, the result of assessment is in accord with the practical situation of overhead traveling crane. It can reflect more fully the safety of the whole crane system and the influence and level of each factor to whole crane system safety, witch an effective synthetic evaluation method is put forward for the safety evaluation of crane.

scholarly journals Eutrophication Assessment Based on the Cloud Matter Element Model

2020 ◽  
Vol 17 (1) ◽  
pp. 334
Author(s):  
Yumin Wang ◽  
Xian’e Zhang ◽  
Yifeng Wu
Keyword(s):  
Cloud Model ◽  
Evaluation Process ◽  
Element Model ◽  
Analytic Hierarchy ◽  
Index Method ◽  
Comprehensive Index Method ◽  
Analytic Hierarchy Process Method ◽  
Matter Element Model ◽  
Hierarchy Process ◽  
Process Method

Eutrophication has become one of the most serious problems threatening the lakes/reservoirs in China over 50 years. Evaluation of eutrophication is a multi-criteria decision-making process with uncertainties. In this study, a cloud matter element (CME) model was developed in order to evaluate eutrophication level objectively and scientifically, which incorporated the randomness and fuzziness of eutrophication evaluation process. The elements belonging to each eutrophication level in the CME model were determined by means of certainty degrees through repeated simulations of cloud model with reasonable parameters of expectation Ex, entropy En, and hyper-entropy He. The weights of evaluation indicators were decided by a combination of entropy technology and analytic hierarchy process method. The neartudes of water samples to each eutrophication level of lakes/reservoirs in the CME model were generated and the eutrophication levels were determined by maximum neartude principal. The proposed CME model was applied to evaluate eutrophication levels of 24 typical lakes/reservoirs in China. The results of the CME model were compared with those of comprehensive index method, matter element model, fuzzy matter element model, and cloud model. Most of the results obtained by the CME model were consistent with the results obtained by other methods, which proved the CME model is an effective tool to evaluate eutrophication.

Comprehensive Evaluation Research on Grid-Connected Wind Power Based on Fuzzy Interval Analytic Hierarchy Process

2012 ◽  
Vol 614-615 ◽  
pp. 999-1007
Author(s):  
Zhi Dong Wang ◽  
Ke Li ◽  
Zi Fa Liu
Keyword(s):  
Analytic Hierarchy Process ◽  
Wind Power ◽  
Index System ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Evaluation Index System ◽  
Evaluation Index ◽  
Analytic Hierarchy ◽  
Hierarchy Process ◽  
Fuzzy Interval

The characteristics of wind power such as wave properties, intermittence, seasonal nature, counter regulation and so on have negative effect on power grid; grid-connected wind power on a scale is limited. To aim at the problem that there lacks quantification evaluation method on grid-connected wind power, an comprehensive evaluation index system concerning safety, adequacy, power quality and economy on the power grid which wind power is accepted. By using current advanced fuzzy interval analytic hierarchy process (FIAHP) , analyzing index such as static stability reserve coefficient, peak margin and transmission reliability margin and so on, coming up with the potential risk, thus on the condition of system safety and steady operation, penetrating power can be maximization, utilization rate improved. At last, analysis of the example proves that the evaluation index system and evaluation method is scientific and feasible.

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