连续刚构桥梁中跨合拢劲性骨架顶推施工技术  

Incremental Launching Construction Technology of Stiff Skeleton for Closure of Middle Span of Continuous Rigid-frame Bridge

作　　者：廖丰 

机构地区：[1]中铁十六局集团第一工程有限公司,北京市101300

出　　处：《城市道桥与防洪》2018年第3期133-135,共3页Urban Roads Bridges & Flood Control

摘　　要：传统大跨径连续刚构桥梁中跨合拢时需要进行顶推施工,施工工艺复杂,容易对主体结构产生影响,不利于合拢时间控制。以国道G104五河淮河特大桥施工为例,通过现场实践经验及理论计算,对中跨合拢顶推体系及工艺进行优化,优化后顶推体系成功应用,取得较好的效果,可为类似工程提供借鉴。The incremental launching construction is required in the closure of the middle span in the traditional long-span continuous rigid-frame bridge. The construction technology is complex, is easy to cause the influence on the main structure and goes against the control of closure time. Taking the construction of Huaihe River Bridge in Wuhe of National Highway G104 as an example, and according to the filed practical experience and theoretical calculation, the incremental launching system and technology for the closure of middle span are optimized. The optimized incremental launching system is successfully applied and the better effect is achieved, which can be referred for the similar projects.

关 键 词：中跨合拢 体外劲性骨架 受力计算 

分 类 号：U445[建筑科学—桥梁与隧道工程]