The capacity of built bridges is greatly challenged In recent years, prestressed bridges built 20 to 30 years ago have been experiencing major diseases and even collapse disasters, causing huge threats or losses to the safety of users of transportation facilities. There have been reports of bridge collapses in China, including Prestressed concrete bridge. For example, the largest prestressed reinforced concrete road bridge in Liaoning Province during construction was once collapsed due to earthquake and overload; the Jiujiang Bridge on the Guangzhan Highway was a large-scale highway bridge. The Nangui Machine 035" sand carrier hit the bridge pier, and the bridge surface collapsed about 200 meters, causing 8 deaths and 4 cars falling into the river. Liu Gong, a senior engineer of Ouweimu Company, said, “There are many reasons for the major diseases of bridges, and the key factors affecting the safety of prestressed concrete bridges are the poor quality of prestressed tension construction, the unsatisfactory tension of the tension, and the pipe grouting. There are some safety hazards in the process of imperfection and construction. Pre-stressing provides the pre-stress of the component by the decompression bending moment provided by the bridge body. If the pre-stressed construction is improper, the beam can not establish effective pre-stress in the beam. When they become combined, the beam body will be severely scratched. If the deflection is too large, it will affect the service life of the bridge and even endanger the safety of the train." The quality of prestressed tension construction is a very important factor affecting the overall quality of the bridge. However, in the traditional prestressed tension construction, the reliability of the equipment and the construction level and the degree of responsibility of the workers directly affect the quality of the tension construction. Manual tension has the following disadvantages: At present, China's highways have gradually adopted automatic tensioning, and the railway beam tensioning is mainly manual manual tensioning, and the automatic tensioning has just started. Intelligent, standard prestressed construction technology is on the horizon With the improvement of the national infrastructure level, how to use and implement pre-stress effectively and accurately has gradually become a trend and a mandatory measure required by regulations. Intelligent, standard construction techniques are also coming out. Prestressed intelligent tensioning technology has become the trend of prestressed construction. After successful development in 2012, OVM.SPT intelligent tensioning system was first applied to prestressed construction of Fangjiashan and Fuqing Nuclear Power Plants. After five years of continuous product development and optimization by the Equipment Research Institute, it has developed into four series. Several models of products are mainly used for bridge prestressing and static load testing of nuclear power, roads, railways, and laboratories. In 2015, the system obtained 1 scientific and technological achievement appraisal certificate from Guangxi Science and Technology Department, 1 utility model patent, 1 computer software copyright registration certificate and 2 design patents. BPS system achieves five major goals and lays a solid foundation for "Internet + Railway" In view of the uncontrollable quality, unreliable safety, low efficiency and many problems existing in the automatic tension system of the highway, in order to meet the overall requirements of the information management of the railway company, from January 2015 to June 2016, the railway The Third Exploration Design Institute Group Co., Ltd. and Ovem Company jointly developed the "Automatic Tension Control and Management Integration System for Railway Prestressed Concrete Precast Beams (referred to as BPS May 2016, BPS At present, Ouweimu intelligent tension system has been widely used in domestic and foreign heavy highway, railway and bridge construction projects, filling the domestic prestressed fine construction blank. 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The construction of roads, railways and bridges is related to the safety and smoothness of driving, and it is also related to the personal safety of the public. With the increasing demand for transportation in our society, the existing transportation facilities are under increasing pressure, and the capacity of the built bridges is greatly challenged. The OVM.SPT intelligent tensioning system developed by Liuzhou Ouweimu Machinery Co., Ltd. (hereinafter referred to as Ovem), which has decades of research and innovation capabilities, has overcome the shortcomings of traditional construction techniques and is being widely used in highways. In railways and bridges, the protection of traffic and public safety has become a new trend in prestressed construction.
Defects and problems such as low precision, low efficiency, complicated operation, poor synchronization, high calibration frequency, and uncontrollable results.
BPS
")), realizes the five technical goals of automatic, refined, informationized, remote, and visualized automatic tensioning of railway beams; through the application of BPS system, the tension efficiency is finally improved, the quality of the tensioned beam is improved, and the quality is improved. The economic benefits of the beam field have been achieved, and the refined construction and information management have been realized. The proposed automatic tensioning technology guide has filled the gap in this field and laid a solid foundation for the development of the "Internet + Railway" cause.
The system combines the software and hardware systems of pre-stress automatic tensioning with the technology of radio frequency identification (RFID) cloud technology and big data to build a complete set of railway prestressed concrete beam tension control construction operation control and process management based on the Internet of Things.
Supervise the inquiry platform to realize the automation, refinement, informationization, remoteness and visualization of the prestressed tension control construction and management process of railway prefabricated beams, and lay a foundation for the promotion of Internet of Things technology in the railway field.
The system passed the appraisal meeting organized by Tianjin Achievement Transformation Center. The members of the expert group consisted of the Railway Corporation Industrial Management Center, the Appraisal Center, the Iron First Hospital, the China Railway Bridge Design Institute, the China Railway Construction Bridge Bureau, the Tianjin Municipal Government, and the Tianjin University. The composition of the relevant units, after reviewing the subject reached the international advanced level, the proposed promotion and application.
