超大跨现场全栓接CFST拱桥主拱架设线形分析与计算  

Analysis and Calculation of the Linear Type of the Main Arch Erection of the Super-large Span Fully Bolted CFST Arch Bridge

作　　者：陈诗泉 赖庆招 田世宽 冯燕平 CHEN Shi-quan;LAI Qing-zhao;TIAN Shi-kuan;FENG Yan-ping(No.Fourth Engineering of CCCC First Highway Engineering Group Co.Ltd.,Nanning 530033,China;CCCC First Highway Engineering Group Co.Ltd.,Beijing 100024,China)

机构地区：[1]中交一公局第四工程有限公司,南宁市530033 [2]中交一公局集团有限公司,北京市100024

出　　处：《公路》2023年第10期26-30,共5页Highway

基　　金：中国交通建设集团有限公司科技研发项目,项目编号KJYF-2022-A-01J;中交一公局集团有限公司科技研发项目,项目编号2020-A-11。

摘　　要：针对贵州德余高速公路乌江特大桥主拱上下游拱肋间横撑在现场安装时全栓接、精度要求极高的工程特点,施工时采用了一项实现钢管拱主拱圈高精度架设的关键技术。这项关键技术的要点是,在制造线形测点实测数据的基础上,叠加有限元软件分析得到的测点绝对位移,耦合主拱温度和拱肋线形变化规律,推导出拱肋节段架设坐标,实现架设时每节段拱圈内各构件精准对接和合龙后成拱线形精确控制的双重目标。Regarding the engineering characteristics of full bolt and high precision requirement of inter-rib braces of the main arch of the Wujiang Major Bridge at the upper and downstream when installed on site,a key technology to realize the high-precision erection of the main arch circle of steel pipe arch is introduced:on the basis of the measured data of the manufactured linear measurement point,the absolute displacement of the measurement point obtained by superimposed finite element software analysis is superimposed,and the arch rib temperature and the linear shape change law of the arch rib are coupled to derive the erection coordinates of the arch rib segment,so as to realize the dual goal of precise docking and close of each component in the arch circle of each section during erection,and accurately control the arch geometry.

关 键 词：钢管混凝土拱桥 拱肋安装 全栓接 架设线形控制 

分 类 号：U448.22[建筑科学—桥梁与隧道工程] U445.47[交通运输工程—道路与铁道工程]