地裂缝区沉降引起轨道几何形位变化的监测和对策
刘建利1周海斌2
Monitoring and Countermeasures of Track Geometry Deterioration Caused by Tunnel Settlement in Ground Fissure Area
LIU JianliZHOU Haibin
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作者信息:1.西安市轨道交通集团有限公司，710018，西安；
2.北京市轨道交通运营管理有限公司，100076，北京
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Affiliation:Xi′an Rail Transit Group Co., Ltd., 710018, Xi′an, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.09.010
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中图分类号/CLCN:U216.3； U213.2+13
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栏目/Col:研究报告
摘要:
对地裂缝地段的隧道结构、轨道几何形位进行长期监测，分析隧道沉降和几何不平顺在列车荷载长期作用下的特征和发展规律，针对地裂缝地段隧道沉降和轨道几何不平顺提出可调式无砟轨道、有砟轨道和接触网调整方案，验证了应对措施的有效性。研究发现：对隧道结构沉降、收敛以及轨道几何不平顺进行高精度的监测，能有效掌握地裂缝地段轨道结构恶化的情况；通过对沉降数据和轨道几何不平顺数据进行对比，可以充分掌握沉降发展规律；利用可调式无砟道床等强化措施对不均匀的结构沉降进行调整，保证地裂缝地段轨道几何状态良好。
Abstracts:
Based on long-term monitoring on tunnel structure and track geometry in ground fissure area, the characteristics and developing pattern of the tunnel settlement and track geometry irregularity under train load are analyzed, corresponding countermeasures of adjustable ballastless track, ballast track and catenary adjustment scheme targeting at tunnel problems are proposed, and their effectiveness are verified. The research results show that the highaccuracy monitoring of tunnel structure settlement, convergence and track geometry irregularity contributes to effective control of the deterioration status of track structure in ground fissure area. By comparing the data of settlement and that of track geometry irregularity, the developing pattern of the tunnel settlement can be comprehensively grasped. By adopting enhancing countermeasures such as the adjustable ballastless track to balance the uneven structure settlement, the track geometry in ground fissure area can be preserved in good condition.
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