Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Making Retrofit Decision with Multi-Criteria Fuzzy Comprehensive Evaluation System for Girder Bridges in Wenchuan Earthquake
In order to provide a tool for making retrofit decisions on damaged bridges, a multi-criteria, fuzzy, comprehensive evaluation system is established considering economic-social facts and the engineering circumstances. Within this system, overall, a bridge's damage scale is divided into five damage states, which is assembled with three damage levels based on fuzzy logic. By means of observation, comparison and summary of post-earthquake damage assessment and retrofitting database made up of damage data from 469 concrete bridges due to Wenchuan earthquake, a novel relationship can be derived between damage states and seismic loss parameters such as the feasibility, safety of retrofitting plan and retrofit fee. Furthermore, this paper introduces a procedure to Bayesian update scheme for fragility curve utilizing bridge empirical damage data as the prior distribution obtained from the Wenchuan earthquake. By composition of the seismic hazard and updated fragility curve of bridge before and after retrofit, the risk of seismic damage can be derived and the retrofitting decision can be made. Moreover, the method is applied to making decision of Huilan bridge retrofitting engineering and it indicates that, regarding seismic damage risk as standards, the reasonable retrofitting decision for damaged bridges can be made effectively and accurately with multi-criteria fuzzy comprehensive evaluation system.
Making Retrofit Decision with Multi-Criteria Fuzzy Comprehensive Evaluation System for Girder Bridges in Wenchuan Earthquake
In order to provide a tool for making retrofit decisions on damaged bridges, a multi-criteria, fuzzy, comprehensive evaluation system is established considering economic-social facts and the engineering circumstances. Within this system, overall, a bridge's damage scale is divided into five damage states, which is assembled with three damage levels based on fuzzy logic. By means of observation, comparison and summary of post-earthquake damage assessment and retrofitting database made up of damage data from 469 concrete bridges due to Wenchuan earthquake, a novel relationship can be derived between damage states and seismic loss parameters such as the feasibility, safety of retrofitting plan and retrofit fee. Furthermore, this paper introduces a procedure to Bayesian update scheme for fragility curve utilizing bridge empirical damage data as the prior distribution obtained from the Wenchuan earthquake. By composition of the seismic hazard and updated fragility curve of bridge before and after retrofit, the risk of seismic damage can be derived and the retrofitting decision can be made. Moreover, the method is applied to making decision of Huilan bridge retrofitting engineering and it indicates that, regarding seismic damage risk as standards, the reasonable retrofitting decision for damaged bridges can be made effectively and accurately with multi-criteria fuzzy comprehensive evaluation system.
Making Retrofit Decision with Multi-Criteria Fuzzy Comprehensive Evaluation System for Girder Bridges in Wenchuan Earthquake
Fan, Q. W. (Autor:in) / Qian, Y. J. (Autor:in) / Zeng, X. Q. (Autor:in)
Sixth China-Japan-US Trilateral Symposium on Lifeline Earthquake Engineering ; 2013 ; Chengdu, China
11.12.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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