大跨钢桁梁形变对轨道平顺性的影响  

Effect of long-span steel trussed beam deformation on the track regularity

作　　者：耿中利[1,2] 张同刚[1,2] 杨怀志 杨书生 施洲[4] GENG Zhongli ZHANG Tonggang YANG Huaizhi YANG Shusheng SHI Zhou(Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 610031, China State-Province Joint Engineering Laboratory of Spatial Information Technology for High-Speed Railway Safety, Southwest Jiaotong University, Chengdu 610031, China Beijing-Shang- hal High Speed Railway Co. , Ltd. , Beijing I00038, China School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China)

机构地区：[1]西南交通大学地球科学与环境工程学院,成都610031 [2]西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,成都610031 [3]京沪高速铁路股份有限公司,北京100038 [4]西南交通大学土木工程学院,成都610031

出　　处：《测绘科学》2017年第8期142-145,156,共5页Science of Surveying and Mapping

基　　金：中国铁路总公司重大科研项目(2014G004-B);中国铁路总公司科研试验任务项目(Z2013-038-5);长江学者和创新团队发展计划资助项目(IRT13092)

摘　　要：针对由于大跨钢桁梁形变导致其上设置的轨道控制点(CPIII)空间位置的变化,进而导致轨道平顺性的测量结果受到影响的问题,该文从轨道维护角度出发,探讨大跨钢桁梁形变对轨道测量及平顺性影响规律。通过模拟实验对大跨钢桁梁形变引起的自由设站坐标、钢轨几何位置测量值以及轨道平顺性指标3方面的影响进行了深入讨论,结果表明:对于直线段大跨钢桁梁部分的轨道平顺性影响较小,对钢桁梁与两端混凝土梁连接处的轨道平顺性影响较大。Considering the spatial position of the track control points（CPIII）,the spatial reference for the track surveying,located on the long-span steel trussed bridge,is varying with the beam deformation,and it will cause undesirable influence on the track regularity measurement.Aiming at the problem,the relationship between the track regularity measurement and the beam deformation was discussed in this paper.The variation of free-station,track geometry and regularity measurement caused by the long-span steel trussed beam deformation were analyzed by simulated data sets.Experimental results showed that the station position and the track geometry were remarkably affected;the main influence of the regularity of the track is located on the region where the steel trussed beam connected to its adjacent concrete beam,while the regularity of the track on the straight steel trussed beam has less influence.

关 键 词：大跨钢桁梁 轨道平顺性 变形 高速铁路 

分 类 号：P208[天文地球—地图制图学与地理信息工程]