大跨径悬臂浇筑连续箱梁墩顶临时固结结构设计研究  

Design of Temporary Fixing Structure for Construction of Large Span Prestressing Concrete Continuous Box Girder Bridge Cantilever

作　　者：杜斌[1] 包太[1] 黄春晖[1] 汪权明[1] 

机构地区：[1]贵州大学土木建筑工程学院,贵州贵阳550003

出　　处：《贵州大学学报（自然科学版）》2013年第4期125-127,共3页Journal of Guizhou University:Natural Sciences

基　　金：贵州省科学技术基金项目(黔科合J字[2011]2007号)

摘　　要：针对大跨径预应力混凝土连续箱梁桥悬臂浇筑施工过程中临时固结结构设计思路不明确,计算方法多样化,实际施工中造成浪费,甚至是存在极大的安全隐患,无法保证其稳定性和应用的可靠性这一问题,通过对大量连续箱梁桥悬臂施工临时固结结构设计资料的总结,根据理论分析建立了临时固结结构设计的实用计算模型,推导了临时固结结构的合理设计方法和计算公式,并通过实桥得到验证,研究成果对类似工程具有一定的指导意义和实际应用价值。The temporary fixing structure designing is not very perfect in large spans of continuous PC box beam bridge, the theory and computational models are not uniform during prestressed concrete continuous box girder cantilever construction process of some projects in China. There is not only seriously waste phenomenon, but also potential trouble in safety and reliability. On the basis of theoretical analysis and the summary of practical engi- neering experiences, the temporary fixing structure analysis model of prestressed concrete continuous box girder bridge cantilever construction were established and the formulas of design of the temporary fixing structure was derived and experienced in practical bridge, the research results provide guidance to similar tunnel engineering projects.

关 键 词：连续箱梁 临时固结 悬臂施工 计算模型 

分 类 号：U442.53[建筑科学—桥梁与隧道工程]