摘要
不同季节温度变化对高速铁路高墩桥梁桥墩造成不同方向的位移,桥墩的位移形变导致布设于桥梁上的轨道控制网(CPⅢ)坐标、高程产生变化,从而影响到高速铁路高墩桥梁段的轨道施工。新建中兰铁路(甘肃段),是我国“一带一路”建设发展核心区域的重要交通基础设施,在项目建设过程中,发现白银南站金沟特大桥处2021年7月建网同2022年1月第1次复测成果较差超限,与2022年7月第2次复测成果基本吻合。在仪器、复测方法及复测精度一致的情况下,针对建网和第2次复测均与第1次复测成果较差超限的原因进行分析,研究其位移规律特点,服务于后续的高铁运营维护。
The temperature changes in different seasons cause displacements in different directions of high pier bridge piers of highspeed railway.The displacement deformation of pier results in changes of the coordinates and elevation of the track control network(CPⅢ),which affects the track construction of high pier bridge section of high-speed railway.The newly built China-Lanzhou Railway(Gansu section)is an important transportation infrastructure in the core area of“One Belt and One Road”construction and development.In the process of project construction,it is found that the network construction in July 2021 at Jingou Bridge of Baiyin South Station is worse than the first retest results in January 2022,which are basically consistent with the second retest results in July 2022.Under the condition that the instrument,the retest method and the retest accuracy are consistent,the reasons why the results of the network construction and the second retest are worse than those of the first retest are analyzed,and the characteristics of their displacement rules are studied to serve the follow-up operation and maintenance of high-speed railway.
作者
陈威
高文锦
张鑫
田大川
CHEN Wei;GAO Wenjin;ZHANG Xin;TIAN Dachuan(Wuhan Rujjin Railway Technology Co.,Ltd.,Wuhan 430000,China)
出处
《测绘通报》
CSCD
北大核心
2024年第S02期77-81,共5页
Bulletin of Surveying and Mapping
关键词
桥梁
轨道控制网
CPⅢ竖向位移
bridge
track control network
vertical displacement of CPⅢ
