As a pilot project for intelligent construction in Changsha, the Changsha Guotai Experimental School has established an intelligent construction 3.0 application scenario through building a BIM data foundation, creating a digital information platform, smart production of components, and the application of intelligent equipment and IoT devices.
Building a BIM Data Foundation to Provide Technical Support for the Entire Intelligent Construction Process
The Changsha Guotai Experimental School is a key construction project in Changsha, being an important part of the Changsha Guotai Center, planned as a nine-year continuous education school with 36 classes. In this technologically advanced smart construction site, the application of BIM, AI, and other technologies runs through the entire project construction process.
Wang Hao, the technical leader of the Changsha Guotai Experimental School project, introduced that the project actively explores the positive application of BIM technology in the design phase, identifying over 50 multi-disciplinary collaborative design issues and more than 200 professional pipeline collision issues in a timely manner. Additionally, BIM technology was applied to optimize the construction plan of the project, and “BIM + oblique photography” was used to assist in visual progress comparison and cost control, which not only provided technical support for the entire intelligent construction process but also directly reduced project costs by 900,000 yuan.
In the production phase, the project primarily uses standardized components such as composite floor slabs, ALC wall panels, and prefabricated stairs, with all production process data uploaded to the Changsha Prefabricated Management Platform, achieving full-process quality traceability and information supervision.
During the construction phase, the project introduced multiple intelligent equipment, achieving multiple goals of improved construction efficiency, reduced labor intensity, and improved working environment.
Drones are widely used across various fields, and the drones used in this project are quite unique; they can capture site data through aerial photography and conduct 3D model reconstruction, allowing for multi-angle viewing and centimeter-level precise measurements, significantly enhancing construction quality inspection efficiency. At the same time, the drone-mounted beyond-visual-range camera enables intelligent inspections of illegal operations, edge protection of foundation pits, and coverage of bare soil on-site, establishing an efficient low-altitude safety supervision system. The project also employs ALC wall panel installation robots, allowing one operator to handle the transportation and pre-assembly of wall panels. On-site calculations indicate that a single device can replace 2 to 4 workers while significantly reducing operational risks.
Construction personnel operating the ALC wall panel installation robot.
The project provides BIM model information for the robot navigation system and has made adaptive design optimizations. Construction robots such as the ALC wall panel installation robot, concrete leveling robot, plastering robot, putty spraying robot, and putty polishing robot can perform automatic construction operations, transitions, and storage maintenance under the guidance of the BIM map, enabling the entire robot “construction team” to be efficiently deployed, effectively reducing project delays and resource consumption.
Integrating Multiple Information Systems to Significantly Enhance Management Efficiency and Risk Control Capabilities
“Now you can be ‘seen’ wherever you go, and it’s real-name based.” At the construction site, Wang Hao pointed to the chip on the brim of the smart safety helmet, explaining that the application of the smart safety helmet not only realizes functions like hat removal warnings, video calls, and trajectory inquiries but also dynamically monitors various risk sources, effectively supervising the performance of safety officers.
This is just a glimpse of the intelligent management platform constructed by the project. Wang Hao explained that the intelligent management platform, as the “smart brain” of the project, integrates multiple information systems such as personnel management, video monitoring, environmental monitoring, quality and safety management, BIM application, and energy monitoring, achieving digital control of the entire construction process. The personnel management section automatically retrieves data from the provincial supervision platform to obtain real-time worker identity information, contract signing status, and real-name attendance data; through video monitoring, the visual progress of on-site construction can be intuitively grasped; through environmental monitoring, real-time feedback on environmental indicators such as PM2.5 can be provided; the quality and safety section supports safety officers in real-time uploading of hazard rectification notifications via mobile, pushing them to responsible parties for rectification replies, forming a closed-loop management system.
The intelligent management platform integrates multiple information systems, achieving digital control of the entire construction process.
In addition, the Changsha Guotai Experimental School project actively explores the application of IoT devices, such as edge protection net monitoring systems, tower crane safety monitoring systems, smart nut loosening warning systems, water and electricity meter monitoring systems, VR safety education, AI video monitoring capture systems, etc. Through the interconnection of IoT devices with the information platform and mobile terminals, an intelligent upgrade of safe and civilized construction management has been achieved, significantly enhancing management efficiency.
As one of the first batch of intelligent construction pilot cities in the country, Changsha has released the “Technical Guidelines for the Evaluation of Intelligent Construction Projects in Changsha City,” pioneering a standardized application scenario evaluation system from intelligent construction 1.0 to 5.0. The “Changsha experience” formed during the construction process of intelligent construction pilot projects like the Changsha Guotai Experimental School will further promote the transformation and upgrading of the construction industry towards greening, intelligence, and industrialization.
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