Abstract
Rapidly and correctly assessing the extent of the damage to a concrete structure after a disastrous fire has great engineering significance. In this paper, an assessment method is proposed based on the game theory-normal cloud model. The surface colors of concrete, exfoliation, cracks, and hammering responses are chosen as the comprehensive assessment indices of concrete damage after fire to establish the corresponding assessment criteria. The normal cloud generator is used to calculate the certainty degree of the grading assessment index of concrete damage after fire. By adopting game theory, the objective weight obtained by the information entropy method and the subjective weight obtained by precedence chart are combined into a comprehensive weight. The comprehensive certainty degree value of concrete damage after fire is then calculated by certainty and weight matrices. The project case analysis shows the assessment results are both intuitive and realistic. This method provides a new approach to the assessment of concrete damage after fire which is more efficient and easier to apply than existing methods.
Highlights
The fire resistance performance of buildings has been widely researched [1]; there is little work on safety assessment, maintenance, and reinforcement of buildings following a disastrous fire
Its only shortcoming is that cutting and sampling are needed, which limits the application in thin-walled structural members
(3) The results produced by the proposed method for P1, P-6, and P-9 indicate that the fire damage of the above members is between grade II and III, biased towards grade III
Summary
The fire resistance performance of buildings has been widely researched [1]; there is little work on safety assessment, maintenance, and reinforcement of buildings following a disastrous fire. Researchers generally adopt methods such as the numerical simulation method [2], ultrasonic testing [3, 4], colorimetric analysis [5, 6], the drilling resistance test [6, 7], and petrographic examination [8] to assess the damage grade of concrete after a disastrous fire. These methods have both advantages and disadvantages. The damage depth of concrete after a disastrous fire can be detected accurately by petrographic examination technology, but this method has high requirements in terms of inspectors and equipment
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
