荆岳长江公路大桥北索塔下横梁的支架设计与计算  

Design and Calculation of Scaffolding System Used at Down Cross-Beam in North Pylon for Jingyue Yangtze River Highway Bridge

作　　者：裴宾嘉[1] 聂东[1] 杨明[1] 于志斌[1] 姚德波[1] 徐国挺 郭泽平 

机构地区：[1]四川公路桥梁建设集团股份有限公司,成都市610000 [2]荆岳长江公路大桥建设指挥部,武汉市430050

出　　处：《公路》2009年第11期61-66,共6页Highway

摘　　要：斜拉桥索塔下横梁支架计算时,一般均采用整个横梁的自重荷载。当下横梁分为2~3次浇注时,该荷载一般偏大2-3倍,则支架等设备安全度富裕过大,经济性就较差。荆岳长江公路大桥下横梁施工计算时,采用下横梁支架与已浇预应力混凝土共同承受未浇混凝土重量,在保证永久和临时结构安全的情况下,取得良好的经济效应,可供同类工程参考。The scaffolding system for the down cross-beam of the cable-stayed bridge could be designed by all selfweight usually.It is 2～3 times than actual load when construction of concret is divided to twice,so it is very diseconomy.The calculating is used by prestressed concrete and the scaffolding system supporting selfweight together before insuring safety,it takes better economy.The thought and the conclusion can be referred for the similar bridge construction.

关 键 词：索塔下横梁 现浇支架设计 共同受力计算 

分 类 号：U443.38[建筑科学—桥梁与隧道工程]