CRTSⅢ型板式无砟轨道自密实混凝土灌筑施工轨道板扣压技术  

The Withhold Technology of Track Slab for Self-Compacting Concrete Construction of CRTSⅢ Slab Ballastless Track

作　　者：王新民[1] 李浩宇[1] 

机构地区：[1]中铁十七局集团有限公司,太原030006

出　　处：《铁道建筑技术》2015年第3期97-101,共5页Railway Construction Technology

基　　金：中国铁路总公司科技研究开发计划项目(2014G001-B)

摘　　要：以阿基米德液态介质浮力理论为基础,针对自密实混凝土灌筑施工浮力作用及其它施工干扰等因素造成的CRTSⅢ型板式无砟轨道铺设精度恶化的问题,分析了轨道板扣压技术现状,提出了点式定量扣压新思路,介绍了球铰压盘式扣压装置的基本功能。通过大量试验验证了该工艺方法的可行性,发现了自密实混凝土灌筑浮力的分布规律和峰值出现时机,给出了该扣压装置的操作方法和相应技术参数,在CRTSⅢ型板式无砟轨道施工领域具有一定的推广价值,谨供同类工程施工参考。In light of the laying accuracy deterioration problem of CRTSⅢ slab ballastless track caused by the self-compacting concrete construction buoyancy and other construction interference,this paper analyzes the technical status quo of track slab withhold and presents a new idea of the quantitative withhold and introduces the basic functions of ball joints pressure disc withhold device by means of Archimedes principle. A lot of field tests prove the feasibility of the process and distribution law and peak time of the self-compacting concrete construction buoyancy are found. the methods of operation and the corresponding technical parameters are worth promotion in CRTSⅢ slab ballastless track construction field so it can provide reference for self-compacting concrete construction technology of CRTSⅢ slab ballastless track.

关 键 词：CRTSⅢ型板式无砟轨道 铺设精度 定量扣压 自密实混凝土灌筑 浮力 

分 类 号：U213.244[交通运输工程—道路与铁道工程]