浮托顶推法架设64m钢桁梁技术

研究目的:浮托顶推法架设钢桁梁的施工设施主要由膺架、滑道、水上浮托支承、顶推纵移、方向及定位控制等五大系统组成。文章介绍了其工艺原理、工艺流程、操作步骤和主要安全质量措施,对修建同类桥梁具有重要的指导意义和借鉴意义。研究结论:浮托顶推法架设钢桁梁是在一般浮拖法架梁基础上的创新,它与一般浮拖法架梁的主要区别是钢梁纵移的动力不同,即采用钢桁梁后端的顶推装置代替前方的牵引设备,具有设备简单、操作方便、速度均匀、运行平稳、有利安全的特点。

Technology of Erecting 64 m Span Steel Truss Girder with Float Tow and Jack-in Method

Research purposes:Erecting the steel truss girder with the float tow and jack-in method needs five systems of the corbelling,slideway,bearing of uplift force,longitudinal movement by jack-in,and direction and position controller.This paper introduces the main technique principle,the technological process,operation steps and the measures of ensuring safety and quality of erecting the steel truss girder with the float toe and jack-in method for providing the reference to construction of similar bridge. Resear...