桥梁菱形挂篮施工安全评价

AbstractWith the increasing demand of highway bridges and high-speed railway bridges,theconstruction of cast-in-situ prestressed concrete continuous bridges is more and more widelyused.This design mainly aims at the construction of hanging basket of a super bridge,findsout its dangerous source and makes safety evaluation.First of all,through the research of theproject example,using the method of safety check table to find out the dangerous source inthe construction of hanging basket,some events with high frequency and great degree of harmare listed in the form of table,and it is found that the event of hanging basket overturning ismore harmful.There are also many reasons for the incident.In view of the event that thehanging basket overturned,the hierarchical structure was established by analytic hierarchyprocess (AHP).In this paper,a comparative judgment matrix is constructed,and the weight ofeach risk factor is calculated by square root method,and then fuzzy comprehensive analysis iscarried out,and the dangerous grade(safety degree)of hanging basket overturning instabilityis obtained.Then according to each dangerous source,puts forward the safety countermeasuremeasure.Through the design research,it is found that the overturning accident of hangingbasket in the construction of hanging basket is one of the most harmful and relatively frequentaccidents.In order to prevent the accident,we should focus on preventing the hanging basketoverturning while walking.To achieve "safety first,prevention first,comprehensivemanagement"this standard,strengthen supervision and inspection,can prevent the occurrenceof the accident.Key words:Rhombus Hanging Basket;Security Checklist Analysi;SafetyEvaluation;Analytic Hierarchy Process-Fuzzy Comprehensive Evaluation