上海轨道交通浮置板道床病害分析及治理
瞿锋
Analysis and Treatment of Floating Slab Track Bed Defects in Shanghai Rail Transit
QU Feng
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作者信息:上海地铁维护保障有限公司工务分公司， 200233， 上海
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Affiliation:Public Works Branch, Shanghai Rail Transit Maintenance Support Co., Ltd., 200233, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20253092
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中图分类号/CLCN:U213.7
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栏目/Col:土建工程
摘要:
［目的］浮置板道床因其优越的减振降噪性能，在城市轨道交通中被较多采用。但随着服役时间的增加，浮置板状态不良问题也逐步暴露，使得浮置板轨道结构的维护和管理面临诸多挑战。应对浮置板道床病害进行分析并梳理相应的治理措施，为浮置板检修工作提供参考。［方法］以上海轨道交通全线网浮置板道床检修工作为背景，分析了浮置板的工作原理、结构特点。剖析了上海轨道交通线网中浮置板轨道结构的主要病害类型、影响特点及病害成因。提出了包括荷载力精调、吊空垫平及失效部件更换等各项治理措施，并以上海轨道交通某线为例，具体分析其浮置板病害治理步骤。［结果及结论］通过在线监测、荷载力精调及维护更换等各类措施，可以确保浮置板状态满足服役要求。应加强重点地段常规检查，加强在线监测技术的应用，并通过建立大数据平台，驱动轨道结构设计优化，实现预防性维护方案升级及全生命周期成本管控，全面提升轨道结构运维的主动性与科学性。
Abstracts:
［Objective］ Due to its excellent vibration and noise reduction performance, the floating slab track bed is widely used in urban rail transit. However, with the increasing service time, issues related to the deteriorating conditions of floating slab track gradually emerge, presenting significant challenges for the maintenance and management of floating slab track structure. It is therefore necessary to analyze the floating slab track bed defects and summarize corresponding treatment measures to provide references for floating slabs maintenance work. ［Method］ Taking the floating slab track bed maintenance work across the entire Shanghai rail transit network as the context, the working principles and structural characteristics of the floating slab are analyzed. The main types of defects, the impact characteristics, and causes of floating slab track structure within Shanghai rail transit line network are identified. A set of treatment measures such as precise load force adjustment, void filling, and replacement of failed components are proposed. Taking a rail transit line in Shanghai as example, its floating slab track defect treatment steps are analyzed concretely. ［Result & Conclusion］ Through various measures such as online monitoring, precise load force adjustment, and maintenance and component replacement, the service condition of floating slabs can be ensured. It is recommended to strengthen routine inspections in key sections, enhance the application of online monitoring technologies, and establish a big data platform to drive optimization in track structure design. This will enable the upgrade of preventive maintenance strategies and lifecycle cost control for floating slab track, comprehensively improving the proactivity and scientific basis of track structure operation and maintenance.
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