摘要
预应力管道压浆作为后张法预应力混凝土桥梁工程预应力施工的主要环节和关键工序,经常存在压浆不饱满、排气孔堵塞、管道堵塞引起压浆困难等问题。自动化程度低、过程控制过度依赖人工是预应力管道压浆施工技术的现状。作为隐蔽工程,压浆施工过程的监控一直是预应力桥梁施工的重点和难点。本文介绍的TGZY型铁路桥梁预应力管道自动压浆系统集成了机械自动化技术、传感测控技术和网络信息化技术,克服了传统压浆施工受人为因素影响大、压浆密实度难以监控测量以及粉尘污染严重等问题,率先实现了施工全过程自动控制、施工信息化管理和绿色环保施工。本文以郑州至周口至阜阳铁路西华北、西华制梁场采用的TGZY型铁路桥梁预应力管道自动压浆系统施工为背景,旨在对该系统施工工艺与操作要点及故障处理方法进行总结,可为类似工程提供技术支持。
Prestressed pipe grouting is the main link and key process of prestressed construction for prestressed concrete bridge engineering in the post-tensioning method. There are often many problems such as unsaturated grouting, blockage of exhaust holes, and difficulty in grouting caused by pipeline blockage. Low degree of automation and excessive dependence of process control on manual work are the present situation of grouting construction technology for prestressed pipelines. As a concealed project, the monitoring of grouting construction process has always been the key and difficult points in the construction of prestressed bridges. In this paper, the author introduced the TGZY Type prestressed pipe automatic grouting system for railway bridge with integrating mechanical automation technology, sensing measurement and control technology and network information technology, which overcame the problems of the traditional grouting construction affected by human factors, the difficulty of monitoring and measuring the compactness of grouting, and the serious dust pollution. It took the lead in realizing automatic control of the entire construction process, construction information management and green environmental protection construction. The TGZY Type prestressed pipe automatic grouting system for railway bridge was successfully used in Xihuabei and Xihua Beam Precast Yard for Zhengzhou-Zhoukou-Fuyang Railway, and the construction technology and operation points as well as fault handling methods of this system were summarized accordingly. It could provide technical support for similar projects.
作者
李金永
Li Jinyong(China Railway 19th Bureau Group Co. Ltd. , Beijing 100176, China)
出处
《铁道建筑技术》
2019年第5期84-89,共6页
Railway Construction Technology
基金
中铁十九局集团有限公司科技研究开发计划项目(2010-6B)
关键词
预应力管道
自动压浆
工艺措施
质量控制
prestressed pipeline
automatic grouting
technological measure
quality control
