无枕式钢弹簧浮置板道床所用铁垫板的优化
王丙苗罗川萍吴屾胡建滨
Optimization of Iron Plate for Ballastless Steel Spring Floating Slab Track
WANG BingmiaoLUO ChuanpingWU ShenHU Jianbin
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作者信息:武汉地铁运营有限公司，430035，武汉
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Affiliation:Wuhan Metro Operation Co., Ltd., 430035, Wuhan, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.11.031
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中图分类号/CLCN:U2135+32
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栏目/Col:应用技术
摘要:
针对武汉轨道交通2号线部分无枕式钢弹簧浮置板道床地段单趾弹条扣件的竖向、水平调整量完全消耗，且线路状态无法达到设计线型要求的情况，从垫板异型改造应用方向，探索其设计、铸造以及安装的可行性。从建立有限元实体模型入手，开展不同阶的模态分析，对改造后扣件核心部件的受力进行检算。经权威检测机构验证，抗拉强度、金相组织等核心指标均合格。部分区间已经试验安装改良后的异型垫板。安装效果表明，该异型垫板达到了预期轨道几何尺寸调整目的，且服役状态稳定可靠。
Abstracts:
In view of the situation that the adjustment amount of single-toe spring bar fastener in part of the ballastless steel spring floating slab track in Wuhan Metro Line 2 is insufficient and the line state cannot meet the design requirements, the design, casting and installation of special-shaped cushion plate are explored. By establishing finite element solid model, modal analysis of different phases is carried out, and stress analysis for the core parts of the modified fastener is testified. Authoritative testing institutions approve that the core indexes such as tensile strength and microstructure meet standard. The improved special-shaped plates have been installed in certain interval for verification. The installation results show that the special-shaped plate serves the expected purpose of adjusting track geometry size, and the service status is stable and reliable.
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