摘要
研究目的:CRTSⅢ型板式无砟轨道是我国自主研发的一种新型无砟轨道,但原方案存在桥梁与路基地段结构不一致、施工工艺复杂、工程造价高、维修困难等问题,为了提高该结构的适应性、扩大推广应用范围、满足时速200 km及以上城际铁路运营要求,本文在总结国内外无砟轨道设计、施工和运营经验的基础上,结合武汉至咸宁城际铁路的特点,在CRTSⅢ型板式无砟轨道设计、测量、施工技术等方面进行深化研究和优化完善。研究结论:路基、桥梁和隧道地段采用统一的单元分块式结构,简化了施工工艺,提高了轨道结构的可维修性;基于CPⅢ控制网和自由设站技术的高精度测量控制系统可提高精调工效50%以上;底座模板及充填层模板结构设计巧妙,使混凝土成型后外观质量合格率达95%以上。
Research purposes： The CRTS Ⅲ slab track is a new type of ballastless track researched and developed by China independently. However, it has some problems, such as the structural inconsistence between the bridge and subgrade section, the complex construction process, high construction cost, difficult maintenance. In order to improve the adaptability of the structure, expand the applicable scope and meet the requirement of the intercity railway at speed of 200 km/h or above, the CRTS Ⅲ slab track ＇s design, measurement and construction technologies were deeply researched and optimized for the intercity railway from Wuhan to Xianning on the basis of summing up the experiences of ballastless track design, construction and operating at home and abroad. Research conclusions：The unified unit block structure was used for the subgrade, bridge and tunnel sections to simplify the construction technology and improve the maintainability of track structure. The high precision measurement and control system based on the technologies of the CP m control network and free station improved the efficiency of the fine tuning by more than 50%. The design of the template structure pass percent of the concrete appearance was up to more than 95 % because of the perfect of the base and filling layers.
出处
《铁道工程学报》
EI
北大核心
2013年第4期51-55,共5页
Journal of Railway Engineering Society
关键词
城际铁路
CRTS
Ⅲ型板式无砟轨道
设计
测量控制
工装
intercity railway
CRTS Ⅲ slab track
design
measurement and control system
construction tooling
