铁路预应力混凝土梁智能张拉系统BPS研究

Research on Intelligent Tensioning System BPS of Railway Prestressed Concrete Beam

预应力张拉施工作为铁路预应力混凝土预制梁生产过程的关键环节,传统的人工操作方式具有精度低、效率低、操作复杂、同步性差、标定频率高、成果真实性不可控等缺点。针对目前铁路桥梁传统预应力人工张拉存在的问题,文章基于大数据、云技术及射频识别技术,研发了一套集智能张拉泵站、智能张拉千斤顶设备、智能化软件平台、智能化手持设备于一体的铁路预应力混凝土梁智能张拉控制及管理系统(BPS),并在石济客运专线梁场进行了试验验证和应用推广。工程应用结果表明:(1)所研发的BPS系统实现了张拉操作的自动化、信息化、远程化、实时化,提高了张拉控制精度、施工质量和工作效率;(2)BPS系统研发了新型的夹片回缩量传感器,解决了夹片回缩量自动测量问题;(3)BPS系统完全依照铁路桥梁预应力张拉的规范和流程开发,对铁路梁场适用性强;(4)进行了自动与人工张拉对比试验,验证了BPS系统的有效性,并成功应用于石济客运专线、济青高速铁路等大型梁场,效果良好;(5)BPS系统的研发为智慧高铁和高铁信息化技术的发展奠定了坚实的基础。

Prestressed tension construction is the key link of the production process of prestressed concrete precast beams. The traditional manual operation has many disadvantages,such as low precision,low efficiency,complex operation,poor synchronization,high frequency of calibration and uncontrollable authenticity of results. In view of the problems existing in the traditional prestressed tensioning of railway bridges at present,in this paper,based on big data,cloud technology and radio frequency identification technology, the railway prestressed concrete beam intelligent tensioning control and management integration system（ BPS） is developed, which includes intelligent tensioning pumping station,intelligent tensioning jack equipment,intelligent software platform and intelligent handheld device.Furthermore,the BPS system has been tested and applied in the beam field of Shijiazhuang-Jinan passenger dedicated line. The engineering application results show that：（ 1） The developed BPS system has realized the automation,informatization,remote and real-time operation of the tensioning operation,and improved the tension control accuracy,construction quality and work efficiency;（ 2） To solve the problem of the automatic measurement of clip retraction,the BPS system developed a new sensor for retraction value measurement of clip;（ 3） The BPS system is fully developed according to the specifications and processes of the prestressed tensioning of railway bridges,and the applicability of the railway beam field is strong;（ 4） The contrast test of automatic and manual tension is taken,which verifies the validity of the BPS system,and successfully applied to large beam fields of Shijiazhuang-Jinan,Jinan-Qingdao and other passenger dedicated line,the effect is good.（ 5） The research and development of BPS system has laid a solid foundation for the development of intelligent high-speed rail and high-speed rail information technology.