The country's first prefabricated structure parking building has achieved topping out.

On May 8, the first prefabricated structure parking garage in the country, with a prefabrication rate of 95%, was topped off. As a representative of the passenger car project building complex at the FAW Technology Center, the parking garage project well interprets the overall goal of 'international standards, domestic first-class.' The parking garage has a building area of 78,834.64 square meters, consists of 7 floors, divided into two buildings A and B, with a height of 24 meters, and can accommodate 2,508 cars. This building has 3,780 prefabricated components manufactured in a factory setting, resulting in good aesthetic effects for finished components, avoiding secondary plastering and decoration; on-site assembly construction with minimal cross-operation and wet work significantly reduces labor costs and improves efficiency. The building uses large-span double T slabs, with no columns in the transverse parking spaces, saving 30% of the building area compared to traditional garages while increasing space utilization by 75% compared to flat parking lots. The construction cost of this building is about one-fourth that of traditional underground parking garages, saving 21 million compared to similarly sized cast-in-place concrete parking garages. This building aligns with the trend of modern construction practices, achieving water conservation, land saving, energy saving, material saving, and environmental protection, opening a new direction for sustainable development in the future construction field.

As the project management unit for this construction project, the Ninth Institute overcame difficulties such as large construction scale, new structural forms, and many construction challenges during the construction of the parking garage, fully fulfilling its management responsibilities. From early planning, design, procurement to construction stages, comprehensive quality, progress, safety, and cost management were conducted throughout the project. Scientifically deducing project progress and orderly arranging project implementation is an important task that the management team must study and solve. The management team carefully analyzed project characteristics, difficulties, key paths, etc., fully considering that this project is a national first; thus, construction personnel, methods, and equipment usage need exploration. Construction schedules cannot follow conventional arrangements but should reserve time for 'pre-assembly' work. They studied required machinery, materials, labor force, and working hours from component production to transportation, hoisting, and splicing; researched the feasibility of orderly connections and organizational rationality from process operation links; repeatedly deduced various possible plans for deviation analysis and developed corrective plans. Due to thorough planning, the established milestone nodes and detailed plans were well executed, ensuring the smooth implementation of the passenger car project building complex. Strict supervision ensured engineering quality. Before construction began, the management team identified key points for engineering quality and developed control measures. The production of prefabricated components and their connections were key points and difficulties.

To ensure connection quality of components before operations began, rehearsals for the 'assembly' process were conducted. All workers were required to master grout material ratios, grouting pressure, post-grouting treatment procedures, and environmental restrictions for grouting operations. A grouting operation manual was set up on-site with our management personnel supervising throughout the entire grouting process. It was due to strict on-site management that this crucial procedure for ensuring structural safety progressed smoothly.

To provide a more comprehensive understanding of the construction plan to contractors and guide the entire construction process during the parking garage's construction phase, advanced BIM (Building Information Modeling) three-dimensional technology was fully utilized. A foundational platform for three-dimensional visual collaborative work was established among all parties involved in design, management, supervision, and construction. During the design phase, considerations were made for later prefabrication and construction requirements to facilitate factory prefabrication and on-site installation significantly improving installation efficiency while saving costs and shortening construction periods.

As a main force in engineering construction within the group company, the Ninth Institute will further summarize experiences in architectural design, construction, on-site management etc., conduct in-depth research on industrialized structural systems and standardized component systems in architecture. They aim to standardize all links from design to production to transportation to installation to acceptance to maintenance while integrating them into a digital management platform to comprehensively enhance engineering management capabilities and play a greater role in technical support for engineering construction contributing more significantly to FAW's independent development.