What Are the Connection Methods Between UHPC Decorative Components and the Main Structure? Connection Systems and Qinglong Group's Innovative Design

The connection methods between UHPC decorative components and the main structure mainly include three types: back-bolt, hook-type, and welded connections, which should be selected according to component weight, wind load, and seismic requirements. Qinglong Group developed a "3D adjustable connection system" with a horizontal adjustment range of ±10mm and a vertical adjustment range of ±5mm, applied in the double-curved curtain wall of Nanning Wuxiang China Resources MixC One, achieving an installation error of ≤±2mm. Back-bolt connections are suitable for concrete substrates (pull-out resistance ≥5kN), hook-type connections suit steel structures (easy adjustment), and welded connections are used for heavy components (requiring anti-rust treatment). The connection point layout is optimized through finite element analysis to ensure system safety.

Technical Points of Back-Bolt Connection

Stainless steel back bolts are used with an anchoring depth of ≥15mm and an installation torque of 20-25N·m. We verify the anchoring force through pull-out tests, with a safety factor of ≥3.

Advantages of the Hook-Type System

The hangers are made of 6063-T5 aluminum alloy with a load capacity of ≥3kN. Installation is fast and allows for thermal deformation. Qinglong's patented hangers have been widely applied.

Welded and Composite Connections

Heavy components use embedded steel plates, with anti-corrosion coating applied after welding. Composite connections enhance reliability and meet seismic requirements.