多塔矮塔混凝土斜拉桥千米长联无砟轨道高精度线形施工监控  

High⁃precision Linear Construction Monitoring of Kilometerlong Multi⁃coupling and Multi⁃pylon Concrete Extradosed Cable⁃stayed Bridge with Ballastless Track

作　　者：渠述锋 孙洪斌 李俊[3,4] 张上 马辰龙 张博伦 王强 陈晓辉 丛炳刚 杨荣山 郭子尊[3] QU Shufeng;SUN Hongbin;LI Jun;ZHANG Shang;MA Chenlong;ZHANG Bolun;WANG Qiang;CHEN Xiaohui;CONG Binggang;YANG Rongshan;GUO Zizun(Jinan-Qingdao High-speed Railway Co.,Ltd.,Jinan,Shandong250102,China;Shandong Railway Investment Holding Group Co.,Ltd.,Jinan,Shandong250102,China;School of Civil Engineering,Southwest Jiaotong University,Chengdu,Sichuan610031,China;National Key Laboratory of Bridge Intelligence and Green Construction,Chengdu,Sichuan611756,China;China Railway Design Corporation,Tianjin300308,China;Zhengzhou-Jinan Railway Engineering Construction Headquarters of China Railway Jinan Group Co.,Ltd.,Jinan,Shandong250010,China;Shanghai Civil Engineering Co.,Ltd.of CREC,Shanghai 201906,China;Shandong Luqiao Group Co.,Ltd.,Jinan,Shandong250014,China)

机构地区：[1]济青高速铁路有限公司,山东济南250102 [2]山东铁路投资控股集团有限公司,山东济南250102 [3]西南交通大学土木工程学院,四川成都610031 [4]桥梁智能与绿色建造全国重点实验室,四川成都611756 [5]中国铁路设计集团有限公司,天津300308 [6]中国铁路济南局集团有限公司郑济铁路工程建设指挥部,山东济南250010 [7]中铁上海工程局集团有限公司,上海201906 [8]山东省路桥集团有限公司,山东济南250014

出　　处：《施工技术(中英文)》2025年第6期44-49,共6页Construction Technology

基　　金：国家自然科学基金(52078424);山东省交通运输厅科技计划项目(2024B93);山东铁投集团科技计划项目(TTKJ2024⁃06)。

摘　　要：为实现千米长联五塔六跨矮塔混凝土斜拉桥CRTSIII型板式无砟轨道高精度施工线形目标,利用防护墙上工作基点与底座板顶面测控点相对位置不变的原理,采用相对高差法进行底座板放样施工;轨道板线形采用严格控制温度变化在2℃以内的CPIII即测即用平面坐标和绝对高程精调。结合水箱压重试验和温度变形观测,校核无砟轨道施工阶段全过程模拟计算结果,轨道板实测高程与设计理论高程误差3~-7mm;采用各跨最大竖向位移及其平方和为评估指标,一次性同时精调两跨轨道板与一次性精调一跨轨道板相比较,一次性精调一跨轨道板对线形控制更有利;单跨轨道板精调的孔跨施工顺序变化对线形影响在10%以内,轨道板精调可采用逐跨顺序施工。In order to achieve a perfect line shape of the kilometer⁃long⁃multi⁃coupling five⁃tower and six⁃span concrete extradosed cable⁃stayed bridge with CRTS III slab ballastless track in high⁃precision construction,the relative height difference method is used to set out the base plate,which is based on the principle that the relative height between the benchmark on the protective wall and the control point on the top surface of the base plate is constant.The alignment of the track slab is precisely adjusted using CPIII real⁃time plane coordinates and absolute elevation measurements,with strict temperature control maintained within 2℃during the process.Combined with the load test with water tank and temperature deformation observation,the simulation results of the whole process of ballastless track construction stage are checked.The error between the measured elevation of the track slab and the designed theoretical elevation is 3~-7mm.With the maximum vertical displacement of each span and its sum of squares as the evaluation indicator,comparing fine adjustment of track slabs in two spans in one operation with fine adjustment of track slabs in one span in one operation,the latter one is beneficial for a better line shape of the track.The influence of the fine adjustment of track slab in a single span on the line shape of track is within 10%when the construction sequence changes in spans.The fine adjustment of the track slab can be constructed in a span⁃by⁃span order.

关 键 词：桥梁 斜拉桥 矮塔斜拉桥 无砟轨道 线形监控 相对高差 施工技术 

分 类 号：U448[建筑科学—桥梁与隧道工程]