那莫右江特大桥吊杆更换施工技术

Construction Technology for Replacement of Hanger of Namo River Bridge

广昆高速那莫右江特大桥吊杆更换施工采用拱上绕绳临时兜吊,方便快捷,实施效果良好。文章依托该大桥维修加固工程,介绍了钢管拱桥吊杆兜吊系统及操作平台设计方案,阐述了吊杆更换关键施工技术。

The boom replacement construction of Namo Youjiang Bridge in Guangkun Expressway adopts the temporary bag-hoisting by arched rope, ,which is convenient and efficient,with good implementation effect. Relying on the maintenance and reinforcement project of this bridge,this article introduced the design scheme of boom hanging system and operation platform for the steel pipe arch bridge,and described the key boom replacement construction tech- nology.