Large Span Suspension Bridge Cable Strand Erection Of Traction Technology Research

Regarding the main cable erection of special big Highway Bridge (PPWS is used for erection of main cable of bridge ) as the background, The hauling in distance and weight are all domestic first. To the need of the main erection ,the text draws further investigations on technology in hauling system of main cable wire strand at a long distance by using "four new" technology, it makes a batch of research result which are imbued with practical value, and this makes good reference to the erection of main cable heavy step foot—path suspension bridge in the future.To the need of study in overall technological conceptual design of hauling system, the study of designing requirement of main machines in hauling system was also drawn, combined the analysis of the most unfavorable operating condition in every stage of hauling system of Bridge and the computation of hauling forces and calculation of parameter.To the need for erection of hauling system, the research of selection and design of the erection of pilot rope was drawn; regulation and changing craft of main cable wire strand erection of hauling system, research catway of resisting wind , safty erection and reliable quality guarantee measure.To various kinds of quality problems that may appear at a long distance to the main cable , reasoning analysis and countermeasure was carried on , and good measure was put forward.After researching the proplems above, the standard and systematic theory on erection of hauling system of suspension bridge is formed ,and by application in erection of RengYang bridge "which is domestic first, the third in the world", main cable wire strand was kept well in the erection, record which is,the most quik ever in china or in the world and which can erect eight main cable wire strands in a day was even finished, it guaranteed the high—quality and high—efficient hauling erection in wire strand of RenYang bridge.