Security Risk Assessment And Application Of Bridge Construction

In recent years, with the bridge construction entered a stage of rapid development, the safety accidents associated with each stage of construction also appeared frequently, causing serious economic loss and personal loss, and having the extremely bad social influence, which has attracted widespread attention, so security risk assessment is very important in the bridge construction process. Although our country in the aspect of bridge construction security risk assessment have carried out a lot of research, due to many uncertain factors about safety risk in the stage of bridge construction, long operating cycle, complex process, it is also not fully achieve effective risk assessment and construction safety warning construction, and the work in bridge construction safety risk assessment still need further research.This paper takes the Star River Bridge as the project background to identify security risk existing in the construction stage about it. Using the expert appraisal of legal analysis,risk matrix method and the index system method to quantitative analysis the risk of the project, get the appropriate level of risk probability and safety grade,which has certain reference significance for the construction organization and risk aversion in the construction project. This paper mainly has the following concrete work:1、Relying on the bridge construction project,combined with engineering, the construction condition, geological survey report, construction drawings, construction design and other technical information,evaluated the overall and specific risk assessment of evaluation object.2、Building evaluation index system about bridges construction safety risk, using the risk matrix method and the index system method to assess each risk event, get the appropriate level of risk probability and safety grade.3 、 Based on the safety grade of each risk event obtained, puts forward corresponding countermeasures for prevention and control of risk.