斜拉桥主梁索导管定位计算  

Location Calculation of Main Cable Duct for Cable-stayed Bridge

作　　者：张艳军[1] 胡隽[2] ZHANG Yanjun;Hu Jun(China Railway SIYUAN Survey and Design Group Co.Ltd,Wuhan,430063;Huazhong University of Science and Tbchnology,Wuhan,430063)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063 [2]华中科技大学,武汉430061

出　　处：《铁道勘测与设计》2021年第2期54-57,79,共5页Railway Survey and Design

摘　　要：斜拉桥索导管的定位对斜拉索而言至关重要,安装精度直接影响斜拉索的受力状态,进而影响桥梁使用寿命。本文结合活力之门大桥主梁索导管定位妁实际案例,对于传统定位方法在现场空间不足无法使用的情况下寻求一种索导管的定位计算方法,并结合全站仪完成定位工作,要求达到高精度。使用三维解析和全站仪结合的方法完成定位工作,弄与CAD绘图得出的精确值进行对比,误差保证在毫米级,满足定位精度要求且方便快捷,给施工提供了便利,为同类工程提供帮助参考。The location of the cable-stayed bridge is critical to the cable,the installation accuracy directly affects the stress state of the stay cable,and then affects the bridge life.Combined with the actual case of location of main cable duct of Vibrant gate bridge,this paper seeks for a location calculation method for the cable duct in the case that the traditional location method cannot be used in the field due to insufficient space,and completes the location work with the total station,which requires high precision.Using three-dimensional analysis combined with total station to complete the location,and compared with the accuracy of CAD drawing,error guaranteed in millimeter,meets the accuracy requirements and convenient,provides a convenient construction,for similar projects to provide help.

关 键 词：斜拉桥 索导管 安装精度 三维解析 定位 

分 类 号：U44[建筑科学—桥梁与隧道工程]