Huaan Gonvvama High-Tech Automotive Sheet Processing (Changshu) Co., Ltd.

Huaan Gonvvama High-Tech Automotive Sheet Processing (Changshu) Co., Ltd.

Project Name: Lightweight New Energy Vehicle Sheet Expansion Project – Production Plant Building 3

Project Description:
The production plant comprises two zones. Zone D has a length of 144 m and a width of 90.125 m, with a maximum ridge height of 15.9 m and a maximum eave height of 13.35 m. Zone C has a length of 132 m and a width of 72 m, with a ridge height of 18.6 m and an eave height of 16 m. The total steel consumption of the project is approximately 2,200 tons.

The project adopts a steel structural system with columns and beams. Two types of column bases are used:
Anchor-bolt–fixed column bases;
Pocket (socketed) foundations.

Steel columns are H-section steel columns. Two types of roof beams are adopted:
Solid-web steel beams;
Truss-type steel beams.
Roof bracing and inter-column bracing are arranged in both transverse and longitudinal directions to form a stable steel frame system.

The subgrade consists of compacted foundation soil, a 300 mm-thick compacted crushed-stone (ballast) layer, and a 100 mm-thick C15 concrete blinding layer. The allowable bearing capacity of the foundation is 8 t/m². The site is level, and there are no obstructions such as high-voltage power lines around the site.

The roof system consists of double-layer metal panels with thermal insulation wool. The wall system consists of a steel framework with rock wool sandwich panels.

Project Challenges:
The project includes single spans exceeding 36 m, which classifies it as a high-risk sub-item project exceeding a certain scale. Expert review and approval are required prior to construction, and lifting operations must be carried out strictly in accordance with the approved hoisting plan. In addition, the construction schedule was extremely tight. Due to process requirements, the owner required completion within 30 days of approximately 23,000 m² of main structural steel erection and approximately 10,000 m² of internal roof panel installation. Ultimately, the project team completed the above tasks in 25 days while ensuring quality, quantity, and safety, and received unanimous praise from the client.