Located at the border of Jiangsu‑Shandong provinces, Xinyi serves as a vital industrial hub in Huaihai‑Economic‑Zone. The city prioritizes new‑material, intelligent‑manufacturing and modern‑logistics industries, with numerous high‑standard industrial‑buildings under construction to boost local real‑economy development. As the core bearing‑structure of the production‑base, the portal‑rigid‑frame steel‑structure creates wide‑open column‑free inner‑space. Pre‑embedded crane‑brackets and sufficient floor‑load capacity enable the workshop to satisfy diversified production‑demands of new‑material‑processing, equipment‑manufacturing and logistics‑warehousing, providing safe, flexible and reliable modern‑industrial premises for settled‑enterprises.
The large‑area workshop contains massive steel‑components. Major construction‑challenges cover precision‑control during batch‑fabrication of steel‑columns and beams, multi‑zone synchronous hoisting, high‑strength‑bolt installation for beam‑column joints, verticality‑calibration of integral‑frame and welding‑deformation‑control of long‑span beams. Situated in Northern‑Jiangsu plain with distinct four‑seasons, hot‑rainy summers and specified winter wind‑snow‑load, the steel‑structure is mechanically‑checked according to Jiangsu industrial‑building codes. Hot‑dip‑galvanization plus finish‑coating anti‑corrosion system is adopted for primary steel‑members to resist damp‑rain erosion. Reinforced anti‑corrosion & fire‑protection treatment is applied on beam‑column joints and anchor‑bolt‑bases for long‑term heavy‑load stability. BIM simulation optimizes hoisting‑sequence and reduces cross‑operation risks.
We undertook full‑scope steel‑frame construction, covering detailed‑design of portal‑rigid‑frame, factory‑prefabrication of steel‑columns & beams, shot‑blasting anti‑corrosion coating, foundation re‑survey on‑site, hoisting‑erection of steel‑columns, beam‑assembly‑lifting, final‑tightening of high‑strength‑bolts, field‑welding, elevation‑&‑verticality‑calibration, supplementary fire‑&‑anti‑corrosion painting and installation of crane‑bracket embedded‑parts. Strict quality‑control was implemented for component‑precision, bolt‑torque, weld non‑destructive‑testing and settlement‑monitoring. We delivered high‑quality steel‑structure works and laid a solid foundation for subsequent enclosure‑construction and enterprise‑operation, contributing to industrial‑park infrastructure upgrading of Xinyi city.
