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Extension Model for Safety Appraisal of Existing Concrete Members Based on an Improved Comprehensive Weighting Method
Joint Authors
Yuan, Yongbo
Zhang, Mingyuan
Zhou, Hengyu
Liu, Chenlong
Wu, Chao
Source
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-10
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
An effective evaluation model for safety appraisal of existing concrete members plays a significant role in promoting the management of an existing building.
This study aims to introduce extension theory into the safety appraisal of existing concrete members based on five indices (bearing capacity, deflection-to-span ratio, cracks, reinforcement corrosion, and concrete carbonation depth) and inspection data.
A matter-element model is established for the safety appraisal of existing concrete members based on matter-element theory.
The safety appraisal rating is identified by the comprehensive correlation degrees, which can be calculated by the weights and single-index correlation degrees of the five indices.
Owing to the one-sidedness in the single-weighting method, a comprehensive weighting method integrating the merits of subjective weight and objective weight is adopted based on game theory.
The interval analytic hierarchy process (IAHP) and entropy weight method are, respectively, used to determine the subjective and objective weight of each index.
It was found that the subjective weight vector calculated by IAHP consists of interval numbers.
Therefore, the traditional comprehensive weighting method based on game theory needs to be improved by the interval number theory.
A comparison analysis between the results generated by the proposed model and an analytic hierarchy process-fuzzy comprehensive evaluation model is conducted.
The results show that the matter-element extension model based on comprehensive weight is more accurate and rational.
The proposed model makes full use of inspection data and gives a clear safety level to decision makers avoiding disorganized data of a single index.
Hence, it can serve as guidance for safety appraisal of existing concrete members in the future.
Furthermore, the improved comprehensive weighting method has practical merits and high scientific value in terms of safety evaluation and other applications in different research fields.
American Psychological Association (APA)
Zhou, Hengyu& Yuan, Yongbo& Liu, Chenlong& Wu, Chao& Zhang, Mingyuan. 2018. Extension Model for Safety Appraisal of Existing Concrete Members Based on an Improved Comprehensive Weighting Method. Advances in Civil Engineering،Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1115330
Modern Language Association (MLA)
Zhou, Hengyu…[et al.]. Extension Model for Safety Appraisal of Existing Concrete Members Based on an Improved Comprehensive Weighting Method. Advances in Civil Engineering No. 2018 (2018), pp.1-15.
https://search.emarefa.net/detail/BIM-1115330
American Medical Association (AMA)
Zhou, Hengyu& Yuan, Yongbo& Liu, Chenlong& Wu, Chao& Zhang, Mingyuan. Extension Model for Safety Appraisal of Existing Concrete Members Based on an Improved Comprehensive Weighting Method. Advances in Civil Engineering. 2018. Vol. 2018, no. 2018, pp.1-15.
https://search.emarefa.net/detail/BIM-1115330
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115330