Taking the opportunity of creating a science and technology demonstration project for the Ministry of Transport, Changqi Expressway has broken the traditional project management model and explored a complete set of smart construction technologies for expressway construction, greatly improving management efficiency, effectively preventing risks, and advancing the transformation and upgrading of expressway construction from traditional manual operations to automated, unmanned, and intelligent operations. Its "Innovative Application Project of BIM Technology in Changqi Expressway Construction Management" won the second prize of the 2020 China Highway and Transportation Society "Transportation BIM Engineering Innovation Award".

Smart management and control. The main business sections of project construction were embedded into the integrated project construction management platform to form a "smart management and control brain". Big data obtained were used for precise analysis, changing the previous situation of isolated information, transforming extensive management into precise management, and comprehensively improving the management level and efficiency of the project owner. Up to now, the "smart management and control brain" of Changqi Expressway has obtained nearly 200,000 pieces of engineering construction data, investigated more than 260 early warnings of quality, safety, and measurement hazards, and achieved a 100% rectification and clearance rate.

Intelligent construction. The "four new technologies" were comprehensively promoted and applied, and intelligent construction equipment was prioritized in research and development, reducing the number of technical workers and saving construction costs, significantly improving the quality of physical engineering, and lowering later operation and maintenance costs of the expressway. For example, advanced technologies such as an IoT-based intelligent beam and slab construction control system, an automatic monitoring system for subgrade and pavement compaction, and prefabricated intelligent manufacturing were applied, increasing production efficiency by 20-50%; advanced equipment such as intelligent welding robots and high-power integrated excavators were promoted, increasing production efficiency by more than 20%; key technologies such as unmanned intelligent paving and compaction of asphalt pavement, intelligent marking machines, and intelligent detection of subgrade compaction were independently developed, increasing production efficiency by 20-40%; in construction such as red sandstone and pile foundation excavation, new equipment such as PC650 high-power integrated excavators and rotary drilling rigs were fully introduced; prefabricated intelligent manufacturing technology was used for culverts and small concrete components; new processes such as vegetation blankets were adopted for lower slope protection, saving a total construction period of nearly 6 months and saving nearly 30 million yuan in construction costs and management fees.

Intelligent safety. An "IoT + intelligent safety system management system" was established, responsibilities were compacted at every level, and the safe production behavior of participating units was standardized; taking the lead in responding to the provincial department's new intelligent quality and safety supervision model, a smart site safety management APP system was developed for real-time control of major risk sources and key processes; the safety education model was innovated, a VR safety education and training hall was built, and Douyin videos were used to carry out accessible online safety education, with more than 3,000 person-times of safety education and training briefings conducted in total.