200 kmh无砟轨道道岔扣件系统设计.pdfVIP

第59卷 第2期 铁 道 标 准 设 计 Vol.59 No.2 2015年2月 RAILWAY STANDARD DESIGN Feb. 2015 文章编号:1004 2954(2015)02 0027 04 200km/ h无砟轨道道岔扣件系统设计 王钟苑 (中铁山桥集团有限公司,河北秦皇岛 066205) 摘 要:以增加岔枕螺栓强度安全以及板下弹性垫层在有限空间内实现低刚度的两大技术关键为研究目的,通过 吸收遂渝线结构形式和客运专线盖板形式结构优点,研究时速200km无砟轨道道岔扣件系统设计原则、可供选择 的方案以及采用的扣件各零件,使200km/ h无砟轨道道岔扣件系统充分利用Ⅱ型弹条的调距功能,轨下橡胶垫板 和板下弹性垫板的缓冲功能,调高垫板对道床不均匀沉降的调整功能,结合高寿命的尼龙套管外预埋不锈钢外套 结构和整体设计的复合定位套,将岔枕螺栓的薄弱部位远离受力点保证其强度安全。 扣件系统既满足线路运营需 要,也适当考虑制造成本。 关键词:无砟道岔; 扣件系统; 弹性; 刚度; 设计 + 中图分类号:U213.5 3 文献标识码:A DOl:10.13238/ j.issn.1004-2954.2015.02.007 Design of Fastening System for200km/ h Ballastless Track Turnout Wang Zhong-yuan (China Railway Shanhaiguan Bridge Group Co. ,Ltd. ,Qinhuangdao066205,China) Abstract:This paper focuses on improving the strength of the concrete bolt and obtaining lower stiffness of the elastic layer under the plate within a limited space and studies the principles for the guiding the design of the fastening system for 200 km/ h ballastless track with reference to SuiNing ~ ChongQing passenger dedicated line fastening structure, addresses the alternatives and components of fastening system toallowbetterutilizationof IItypeclipadjustability andthecushioningcapabilityofthepadunder rail and plate,to improve the adjustability of the pad for the uneven settlement of the track bed. In combination with the long service embedded stainlessbushing and composite sleeve,theweakpart of the switch sleeper bolt isseparated asfar aspossiblefromtheloadpointfor the sake of safety. Thefastening system shall satisfy the