Research On Comprehensive Evaluation Model Of Bridge Construction Safety Based On Fuzzy Analytic Hierarchy Proces

With the rapid development of economy.the production of infrastructure projects has been increased year by year.the construction of the bridge construction projects are more and more.the difficulty of the bridge structure is becoming more and more complexer makes the difficulty of bridge construction has been increased.increasing difficulty of bridge construction has occurred in bridge construction safety accidents.in order to reduce the number of bridge construction safety accidents.it is must to strengthen safety management.safety assessment as an important part of the safety management is very important in safety management.so how to accurately and quickly to evaluate the safety of bridge construction site become an important research subject.At first.this paper comprehensively systematically expounds the bridge construction safety evaluation at home and abroad research status and bridge construction safety system and safety assessment method.according to the principles of establishing index system and the basic principle of recursive class hierarchy and bridge construction characteristics.respectively from the management factors.human factors.material factors.environmental factors to establish evaluation index system of bridge construction.according to the theory of fuzzy mathematics.to expert scoring of bridge construction safety evaluation index and finally determine the membership function of fuzzy relationship matrix is established.laid the foundation for the overall bridge construction safety comprehensive evaluation.according to the theory of analytic hierarchy process(AHP).the established bridge construction safety evaluation index to construct judgment matrix.determine the weight of each bridge construction safety evaluation index.and construction of the bridge safety evaluation index of the structure of the judgment matrix principle.method.calculation and consistency check for the details.Finally established according to the analytic hierarchy process(AHP)and fuzzy relationship matrix to calculate the weights of synthetic calculation to realize the comprehensive evaluation of bridge construction safety.in carries on the comparison to determine the safety level of all kinds of methods.finally determined according to the maximum membership degree principle to determine the bridge construction safety level.In order to solve the problem of calculation in the safety evaluation is relatively cumbersome.developed the bridge construction safety evaluation model of matching calculation software.the calculation software based on MATLAB programming language and the graphical User Interface(Graphical User Interface.GUI)design.taking the calculation software of xi he bridge construction site.after practical application results show that the calculation software calculation results are accurate.it has certain actual application value.Finally based on the actual results of xi he bridge construction safety evaluation of bridge construction safety measures were made.