不对称连续刚构合拢段的施工控制  

Construction Control of Closure Segment of Asymmetric Continuous Rigid Frame

作　　者：荆友璋 

机构地区：[1]大连理工现代工程检测有限公司,大连116024

出　　处：《北方交通》2012年第12期80-83,共4页Northern Communications

摘　　要：结合不对称连续刚构合拢段施工实践,介绍了不对称连续刚构合拢段各施工阶段的控制方法。详细阐述了防止张拉预应力导致箱梁底板混凝土开裂的措施、顶推过程以及合拢段预应力张拉顺序控制等具体内容,并介绍施工控制中需要注意的问题。In combination with construction practice of closure segment of asymmetric continuous rigid frame, the control method of each construction stage of closure segment of asymmetric continuous rigid frame is introduced. Specific contents such as the measures of preventing bottom slab concrete of box beam from cracking as a result of tensioning, the pushing process, and the prestress tensioning sequence control of closure segment are elaborated in detail and the problems needing attention in construction control are introduced.

关 键 词：不对称连续刚构 合拢段 顶推控制 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]