Research purposes : The introductions are given to swinging vertical swivel of steel tower of Jingdezhen Bailu Bridge, application of hydraulically synchronous technique in hoisting entire vertical swivel and the control measures for it, for the purpose of providing experience for similar construction of bridge.
Research methods : We summarized the practice experiences and adopted the pulling method for swinging vertical swivel, namely one herringbone derrick mast was installed on the pulled steel towel to form a stable triangle structure, then choosing anchor point, and the swivel of steel towel was controlled by computer, to ensure the safety and success of construction for vertical swivel of steel tavel.
Research results : It took 9 hours and 18 minutes to swing the steel towel in place with 580successfully. The closure accuracy met the design request with the error only of 2 mm and the cord force conformed to the calculated result.
Research conclusions :This was the first time in China to vertically swing a steel towel with total length of 88 m by adopting pulling method, and it was also the most advanced installation technology to hoist large-sized component with control of swinging cause by computer in China
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