| Under the current "new normal" of economic development,the proposal and implementation of "new infrastructure" have put forward higher requirements for the transformation and upgrading of the construction industry,and the traditional extensive quality management model has been unable to meet the growing needs of engineering quality management.Cutting-edge information technology has been continuously used in engineering quality management.However,there are still many typical problems in the current construction quality control mode,such as imperfect quality management organization,serious isolated island fault phenomenon of quality information,difficult to guarantee the effectiveness and authenticity of quality information,and so on.As a contemporary frontier hot technology,block chain has the technical application potential of establishing trust chain among construction quality control subjects,and its technical characteristics can ensure that quality information is safe,reliable and traceable,and the project quality goal can be achieved through efficient distributed decision-making mechanism.therefore,it is of great engineering significance to study the application of block chain technology in construction quality control.This paper focuses on the construction quality control based on block chain,which mainly consists of three parts.First of all,the necessity of combining block chain with construction quality control is analyzed,and the construction quality control scheme based on block chain is designed from four aspects: business process,main body,information model and block chain selection of construction quality control.a construction quality control system based on block chain is constructed.Secondly,the operation mechanism of construction quality control alliance chain is designed and discussed.In order to ensure the traceability of the source of quality information and manage the identity rights of each node,an identity authentication mechanism is set up,including key distribution,node identity registration and authentication.In order to ensure the timeliness,security and reliability of quality information,and to realize the structured storage and secure access of quality information,the data storage and access mechanism is set up.Consensus mechanism can ensure that all nodes store consistent information.Based on the selection of PBFT algorithm and combined with the characteristics of construction quality control,PBFT is optimized and improved,and the processes of dynamic node addition and two-stage consistency protocol are designed.The smart contract of quality evaluation can realize the automatic analysis and processing of quality information.This paper designs the quality index system and method,and expounds the process of contract deployment and transfer.Finally,based on a project case,the construction quality control information system architecture based on block chain is designed.The system includes five functional modules: system management,project management,plan quality management,process quality management and result quality management.Through the implementation and deduction of the application of the project case,the application effect of the system is evaluated,which can realize real-time collection of quality information,auxiliary quality improvement and quality traceability.This paper further demonstrates the feasibility and superiority of the application of block chain in construction quality control,which is one of the effective ways to solve the problems existing in the current information construction quality control. |
