摘要
简支转连续梁桥在施工阶段存在体系转换,不同的施工程序会对结构内力产生影响.通过5跨30m箱梁的具体工程实例,针对15种不同的施工程序进行计算分析.分析表明:先浇筑整体化层后浇筑湿接缝或整体化层与湿接缝交替浇筑对结构受力更有利;梁端湿接缝的预应力张拉顺序在施工阶段也会对结构内力产生一定的影响.
System transformation exists in construction of continuous erection by many of simply supported beams. In the construction stage, structural internal force varies according to various orders of construction. A 5 - span 30 - mile length box - girder bridge is taken as an example and 15 different kinds of orders of construction axe carried out to analyze. It is shown that the sequence of casting monolithic deck first then casting wet joint or the sequence of casting monolithic deck and wet joint alternately is much better to structure. What＇s more, the internal force can be influenced by tension sequence of tendons at beam end.
出处
《重庆交通学院学报》
2006年第B06期35-37,43,共4页
Journal of Chongqing Jiaotong University
关键词
简支转连续
施工程序
内力分析
张拉顺序
continuous erection by many of simply supported beams
order of construction
internal force analysis
tension sequence
