Located in Fuyang, Anhui Province, Fuyang Normal‑University is a key comprehensive public undergraduate‑university in Northern‑Anhui with profound educational heritage and complete campus‑supporting facilities. The campus sports‑center gymnasium serves multi‑purposes including physical‑education teaching, campus sports‑events, staff‑and‑student fitness and large‑scale assemblies, acting as a core venue for campus cultural‑sports activities and a landmark public‑sports building on campus. This metal‑roof renovation project demolishes and replaces the original outdated roof system. Based on the existing grid‑shell load‑bearing frame, a brand‑new metal‑enclosure roof system consisting of steel purlins, thermal‑insulation waterproof layers and profiled aluminum panels is constructed. The renovation fundamentally solves roof‑leakage and insulation‑aging problems, prolongs roof‑service‑life and provides a safe and comfortable sports‑teaching environment for teachers and students.
As a reconstruction‑project for existing venue, the roof renovation is carried out while retaining the original steel‑grid‑shell main‑structure. During demolition of old roof, finished‑product protection for the grid‑shell is required and demolition‑load shall be strictly controlled to avoid collision‑damage to lower grid‑members and joints. Major construction‑difficulties include layout‑positioning of new‑added steel purlins, installation of post‑anchored connectors, laying of multi‑layer thermal‑insulation and waterproof materials, on‑site cutting‑installation of profiled‑aluminum panels and waterproof‑sealing for expansion‑joints and gutter drainage‑joints. Located in Northern‑Anhui Plain, the site features hot‑rainy summers, concentrated rainfall during plum‑flood season and obvious winter wind‑snow load. The roof is specially designed with Grade‑I waterproof standard and complete thermal‑insulation layers to achieve excellent water‑seepage‑resistance, heat‑insulation, noise‑reduction and wind‑durability. Rust‑removal and anti‑corrosion repair are conducted synchronously for the original grid‑shell steel‑structure to improve long‑term safety performance of roof frame.
We undertook the full renovation construction of gymnasium metal‑roof, covering demolition and cleaning of old waterproof‑layers and leveling‑layers, anti‑corrosion repair for original grid‑shell components, fabrication and installation of new steel‑purline system, laying of thermal‑insulation boards, Grade‑I waterproof‑membrane construction, hoisting‑installation of profiled‑aluminum panels and waterproof‑sealing treatment for expansion‑joints, gutters and drainage‑outlets. Strict safety‑management was implemented throughout high‑altitude construction and existing grid‑shell was well‑protected. We controlled installation precision of purlins, flatness and lap‑sealing quality of metal panels, and reinforced waterproof‑treatment for leakage‑prone zones. The metal‑roof upgrading‑project was completed with high‑standards, contributing to the improvement of campus cultural‑sports infrastructure of Fuyang Normal‑University.
