Research On The Evaluation Method Of The Cross Bridge Swivel Construction Safety

Research and analyze the possibility of bridge construction safety risk assessment is to bridge the possible casualties, economic losses and environmental damage, delay status and losses arising therefrom, and formulate the corresponding prevention and control measures.Since twentieth Century ninety years the rapid development of traffic facilities in our country, all kinds of transport network density increasing, the cross bridge construction more and more, the overall point of view, the bridge construction risk assessment research is getting more and more attention, and the rapid development, but only for the safety evaluation of Construction Engineering achievements with cross bridge is still scarce, and cross a bridge be delivered lines are often large traffic volume, in order to minimize cross bridge construction on the influence line, so it is necessary to cross the bridge swivel construction safety risk assessment of safety protection, cross the bridge swivel construction order and traffic, in order to ensure the safety of the bridge crossing.Firstly, the expert investigation method, analytic hierarchy process(Delphy Fa) bridge method and probability analysis method of safety risk assessment methods are briefly introduced, and the origin of the risk matrix method and Kent index method were discussed,including the Kent index method in underground engineering of oil and gas pipeline has been widely used, and Kent index method the index contains the factors of risk probability and risk index weight, than the more rigorous and accurate.Then according to the characteristics of cross bridge rotation construction, summarizes the characteristics, risk identification method,basis and procedures, and to cross the bridge swivel construction risk rating process risk matrix method is studied based on the established evaluation principle, cross the bridge Swivel Construction Based on matrix method.This reference to Kent index method in pipeline construction, the improvement of Kent index method in Kent index and evaluation model, the method can be used to cross the bridge swivel construction safety assessment, to cross the bridge Swivel Construction of Kent index based on the evaluation index system of research, with reference to the relevant specification and data set the principle of score and risk index, design index, construction index, risk index of Kent index acceptance criteria.In this paper, the main use of safety assessment of Hengshui Heng Xing highway two project AK1+522.5 ramp bridge of the risk matrix method and Kent index, were studied on the comparison and analysis of the risk matrix method and the method of safety evaluation index of the process and results of kent. In this paper, for the first time in the cross bridge rotationconstruction is introduced in the Kent index method for safety assessment, to fill the domestic external cross the bridge swivel construction safety control study deficiencies, to cross the bridge Swivel Construction Safety Management for reference.