Existing Railway Bridge Safety Evaluation System And Its Overall Design

With the rapid development of the national economy and expanding the scale of railway transportion, to bear the great load of the existing railway bridge, put a higher operational safety requirements. This paper studies a class of building with the existing safety management system of railway equipment suited to three security management platform, by the Railway Administration, the Public Works section of three-level management workshop designed to build information network between the exchange management system, to realize the existing railway serving the state of the bridge safety monitoring and diagnostic evaluation.In this paper, bridge equipment, the specific characteristics of working conditions, through to the 891-4 type acceleration sensor, processing and wireless communication handheld terminals on the rear of process control as the basic design ideas, the use of fuzzy theory and expert assessment system to complete the construction of the a comprehensive assessment of bridge condition to completion of the bridge safety evaluation system design and applications. Overall design aspects of the system to the existing Xi'an Railway Bureau, the main active bridge equipment target in order to build sensor systems, data acquisition systems, data processing systems, safety assessment and early warning systems and information display systems for the system model, through the establishment of workshops, the Public Works Duan, Railway Bureau, three safety net system as the network management system, and eventually to complete the functional design of a system based on overall design framework of the support platform; in system software design, the user layer, to achieve layer, application layer, service layer, data layer and the network layer for system-level design, a comprehensive analysis of three-tier management system, maintenance of the terminal, basically means the bridge data acquisition, control, processing and network platform system, and ultimately the function of system software applications; in the system hardware design, in order to Select the hardware terminals and means to achieve the system interconnect to achieve a reasonable completion of the system's hardware device configuration selection.In the pilot test Yumenkou Yellow River Railway Bridge, through the bridge truss beam transverse stiffness on-site inspection, the target parameters reflect the objective, accurate, and received good results.The establishment of bridge safety evaluation system is a complex project, involving data communications, computer management, structural engineering, vibration control and many other disciplines, how to be more effective in-depth research and development and design, in the current view, is still a systems engineering, there are many to be improved and optimized for the work to be done.