Research Of Coastal Caisson Wharf Construction Safety Assessment&Safety Control

In recent years,along with the economy developing rapidly,the construction speedof transportation infrastructure is also advanced by leaps and bounds,and the safetyproblem in construction is increasingly prominent.During the twelfth-five state,theinvestment of coastal port infrastructure is increasing again.Port engineering has beendeveloping to large-scale,deepwater,and away from the coastline.So the securitysituation of port engineering is very severe. Caisson wharf is the main structure ofcoastal port.In order to effectively prevent and control accidents happened inconstruction and improve the security situation,the research of security-risk assessmentto coastal caisson wharf is conducted.Trough the investigation and experts investigation, on the basis of collecting andresearching large materials of caisson wharf construction-organization design and thepredecessors’ research achievements for reference,using construction process as thebasic unit to identify major risk sources of caisson wharf construction and risk factors ofengineering properties.Choose Analytic hierarchy process and fuzzy comprehensiveevaluation method as the security-risk analysis methods of caisson wharfconstruction.By constructing fuzzy comprehensive evaluation model of caisson wharfconstruction engineering properties risk,realizing the evaluation of engineeringproperties risk,and the evaluation result is determined by maximum membershipdegree.With reference to the highway tunnel engineering construction security-riskassessment guide,determine the risk classification method and risk accept criteria.Thefuzzy comprehensive evaluation model is carried to the specific engineering case,and isverified with the rationality and applicability.It means the caisson wharf constructionsecurity-risk assessment research obtaines some achievements. According to the fuzzycomprehensive evaluation result of engineering case and the risk accept standards, putforward specific risk control measures which provide effective way for control of riskaccident.