## 5 Research on Monitoring Platform  
This section will introduce the monitoring platform developed based on construction monitoring and control. During the phased construction of the bridge, the geometric state and force status of each component are constantly changing. Whether the bridge alignment meets the accuracy requirements, whether the structural force and deformation are consistent with expectations, whether the components can be spliced smoothly, whether the designed bridge state can be achieved, etc. These are issues of great concern to all parties involved in the construction. The construction monitoring work is carried out around the above problems, and the development of information and digital technology provides effective auxiliary means for the bridge construction monitoring work. As shown in Figure 22, the construction of the bridge construction monitoring digital platform is based on the premise of data standardization. The structural response data of the construction process is used as the main chain, connecting monitoring and calculation, monitoring instructions, construction monitoring, error analysis, monitoring and warning, and other work. The platform focuses on solving the problems of complete collection of structural response, rapid data analysis, and timely information release, providing digital technical support for bridge construction and monitoring decision-making. To achieve the above goals, an end-to-end cloud collaborative system architecture based on core concepts such as the Internet of Things, the Internet, distributed microservices, and front-end/back-end separation is an ideal architectural choice. Figure 21: Structural stress under the effect of \(-10\)\({}^{\circ}\)C temperature difference under bridge completion conditions. At the collection end, design independent collection modules that can dynamically interface with different types of hardware devices and achieve data synchronization collection through multi-process mode, as well as the collected monitoring and detection data, will be transmitted to the cloud platform in real time through the network after secure encryption and compression. In the cloud, the platform is divided into multiple subsystems, and services are constructed with a micro-service architecture to realize a high-performance cloud platform that supports distributed deployment. Bridge construction monitoring involves structural facilities, theoretical prediction, on-site monitoring, construction business, and other types of data, for which a unified database is designed to specify the data standardized format, and the data is stored in series in a structured mode to ensure efficient data query, as well as good scalability. The bridge construction monitoring digital platform usually includes information perception, data transmission, data governance, data management, business application and integrated display, and other levels. This platform covers the entire process of data perception, aggregation, processing, governance, analysis, display, and service, and supports the use of BIM models for construction process information management and display. 1. Information perception layer: dynamically collect status information during the bridge construction process through sensing devices of IoT, intelligent construction equipment, third-party channels, and other channels. 2. Data transmission layer: the data transmission of the information perception layer is realized by the combination of wireless communication and private network, and the security of the transmission process is guaranteed by the Internet data security transmission technology. 3. Data governance layer: the data uploaded by the data transmission layer is treated, processed, aggregated, desensitized, encrypted, and published. At the same time, the corresponding algorithm is used to calculate the corresponding index value according to the technical indicators set by the user. Figure 22: Architecture of digital platform for bridge construction monitoring. 4.