Research On Safety Traceability Method Of Bridge Construction Based On Blockchain And RFID Technology

With the continuous development of China's national economy and the deepening of modernization construction,China's bridge engineering occupies a place among the world's bridge powers with an amazing construction scale and development speed.Although the bridge engineering technology in our country is constantly innovating and the construction capacity is constantly improving,there are frequent quality and safety accidents such as collapse,and there are still huge challenges in the construction process and the quality and safety control of construction materials.Catastrophic accidents caused by bridge quality problems not only have a huge impact on people's property and life safety,but also directly affect the stability and development of society.In order to solve the continuous bridge safety problems in recent years,strengthen the quality control and supervision of bridges,based on the existing bridge safety traceability methods at home and abroad,this paper studies the blockchain and RFID technology in depth.First of all,the traceability information of each link of bridge engineering is analyzed,and the data information is encrypted and protected by ECC elliptic curve encryption algorithm of blockchain;the security early warning management is provided for each link parameter index of bridge engineering by blockchain intelligent contract;the location of building materials used for bridge is tracked in real time by TDOA method of RFID technology.Establish a distributed,low-cost,safe and efficient database based on the blockchain technology from material selection and transportation to the whole process of maintenance,use RFID technology to record the key information of each link electronically,so that the construction party,the acceptance party and other participating nodes can record the information in the bridge database based on the blockchain in real time,and form the information that can not be tampered after the whole network authentication,so as to realize the bridge Tracking and traceability management of engineering safety.The system provides an effective supervision and quality traceability platform for all participants,which plays a positive role in improving the quality of bridges and the development of the construction industry.