Located in Xiushan New‑District, Maanshan Sports‑Exhibition‑Center is a municipal cultural‑sports landmark integrating sports competitions, public fitness, exhibition commerce and leisure‑tourism. The complex consists of main stadium, multi‑purpose gymnasium, natatorium, tennis hall and exhibition‑center. As a large‑scale comprehensive sports‑building cluster in Wanjiang Region, it is qualified for hosting provincial‑level ball‑games, swimming competitions and large‑scale performances, greatly improving the public cultural‑sports infrastructure of Maanshan. The tennis‑hall covers a construction‑area of 9212.5 ㎡ while the natatorium reaches 20664.84 ㎡ with 2078 fixed spectator‑seats. Both venues adopt large‑span steel‑structure frame and Al‑Mg‑Mn standing‑seam metal‑roof enclosure system, whose smooth curved‑roof appearance harmonizes perfectly with the modern architectural style of the whole sports‑complex.
The two venues are equipped with large‑span curved roofs with undulating shapes and complex layout of primary‑secondary steel members. Key construction‑difficulties include lofting‑fabrication of curved purlines, high‑altitude precise installation, curved‑surface cutting of metal panels and waterproof sealing of lock‑seam joints. Constant‑temperature high‑humidity environment inside natatorium generates corrosive vapor from swimming‑pool water, imposing strict requirements for steel anti‑corrosion, roof air‑tightness, water‑tightness, thermal‑insulation and anti‑condensation performance. Situated on the east‑bank of Yangtze‑River in Wanjiang area, the site features rainy plum‑season and frequent severe convective weather in summer. Special wind‑uplift‑resistance structural‑calculation was carried out for the roof system. Hot‑dip‑galvanization plus finish‑coating protection is applied for steel members and support joints. The durable Al‑Mg‑Mn standing‑seam roof‑panel, vapor‑barrier, thermal‑insulation layer and waterproof‑breathable membrane form a multi‑layer enclosure system to eliminate hidden risks of water‑leakage, condensate dripping and wind‑induced shedding.
We undertook the integrated construction of roof steel‑structure and complete metal‑enclosure system for tennis‑hall and natatorium, covering detailed design of large‑span curved roof‑steelwork, factory prefabrication of steel‑components, shot‑blasting anti‑corrosion coating, high‑altitude hoisting‑assembly of roof steel‑frame, secondary‑purline installation, laying of multi‑layer thermal‑insulation and waterproof materials, cutting, hoisting and curved‑surface lock‑seam installation of Al‑Mg‑Mn panels, as well as waterproof‑treatment for gutter and drainage joints. Strict quality‑control was implemented on fabrication precision of curved steel‑components, NDT inspection of high‑altitude welds and mounting accuracy of curved metal panels. Waterproof‑critical positions including panel‑locking joints, expansion joints and drainage outlets received special construction supervision. We delivered high‑quality curved metal‑roof works and contributed to building a modern benchmark sports‑facility in Wanjiang Region.
