嘉陵江特大桥大跨宽幅连续刚构桥线型控制技术  

LINEAR CONTROL TECHNOLOGY OF JIALING RIVER BRIDGE WITH LONG SPAN AND WIDE CONTINUOUS RIGID FRAME BRIDGE

作　　者：赵佳云 李清芾 ZHAO Jia-yun;LI Qing-fu(CCCC First Highway Eighth Engineering Co.,Ltd.,300170,Tianjin,China)

机构地区：[1]中交一公局第八工程有限公司,天津300170

出　　处：《建筑技术》2023年第19期2382-2384,共3页Architecture Technology

摘　　要：连续刚构桥线型控制是连续梁施工的关键技术,主要通过施工监控及设置预拱度实现,是保证连续梁顺利合龙及线型条件达到设计要求的技术保障。针对龙溪嘉陵江特大桥200 m跨宽幅连续刚构,分析了大跨、宽幅连续刚构桥的控制要点,采用有限元仿真计算与现场实测数据进行对比分析,达到控制连续刚构桥整体线型的目的,为类似大跨宽幅连续刚构桥施工过程中线型控制积累了宝贵的经验。The alignment control of continuous rigid frame bridge is the key content of continuous beam construction,which is realized by construction monitoring and pre-camber setting.It is the technical guarantee to ensure the smooth closure of continuous beam and the alignment condition to meet the design requirements.Aiming at stream jialing river extra-large bridge is 200 m across wide continuous rigid frame,analyzes the control of long-span continuous rigid frame bridge,wide cut points,compare to the actual measured data is obtained by using the finite element simulation analysis,achieve the goal of integrated linear control continuous rigid-frame bridge,for the similar long-span continuous rigid frame bridge construction process wide linear control has accumulated valuable experience.

关 键 词：大跨宽幅 连续刚构 施工控制 

分 类 号：TU74[建筑科学—建筑技术科学]