Risk Control Of Long-Span Bridge Anchorage

In recent years,with the rapid development of the domestic transportation industry,the construction of various types of highway bridge construction frequent accidents,the importance of bridge construction risk assessment is increasingly prominent.During the whole life of the bridge,the construction stage is the most serious and most serious risk accident in the highway bridge safety accident,and it is necessary to focus on the study so as to be able to realize its rapid response in the actual construction process and reduce its The probability of occurrence,reduce its impact.The main contents of this paper are as follows:First,Through the investigation and analysis of all types of risk accidents that occurred in highway bridges in recent years,it concludes that the construction stage of bridge engineering is a major risk event with the most significant impact of risk factors.This paper summarizes the current research status of bridge construction risk at home and abroad,and analyzes some shortcomings in current risk assessment research.Second,described the basic concept of risk and risk assessment of a brief process.This paper briefly summarizes all kinds of evaluation methods,then focuses on the advantages and disadvantages of AHP and entropy method,further explains the related views and theories of AHP and entropy method,narrates the research characteristics and related steps of the two theories.Third,Introduce the general situation of Dongting Lake Bridge Project,elaborate the heavy and difficult points in the process of construction,and combine the theory of AHP to construct the hierarchy system of Dongting Lake Bridge.Based on the comprehensive analysis of various aspects of Dongting Lake Bridge,Results,the construction of the Dongting Lake Bridge for further evaluation..Fourth,Analyze the anchorage construction by using the analytic hierarchy process and the entropy method,so as to obtain the stage of the process with the highest risk weight,and compare the result with the actual situation of on-site construction.According to the result of risk analysis,we put forward targeted scientific and reasonable risk prevention measures based on the anchorage construction to guide the concrete construction on site,with a certain degree of theoretical and practical value.