How to Achieve Detachable Connections for GRC Curtain Walls: Key Design Points, Technical Approaches, and Engineering Application Research

In the development of contemporary building curtain wall technology, the detachable connection design of GRC curtain walls has become an important practical direction for green building and sustainable development. As an industry-leading enterprise with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group draws on its extensive practice in detailed design, manufacturing, and project implementation to provide systematic solutions for designers and owners from two dimensions: technical path optimization and engineering application innovation.

Design Logic of Detachable Connections for GRC Curtain Walls: From Material Properties to Engineering Requirements

GRC (Glass Fiber Reinforced Concrete) is widely used in high-end buildings such as grand theaters and commercial complexes, thanks to its advantages of light weight and high strength (weighing only 1/4 of traditional stone) and high design freedom. Detachable connection design must balance three core objectives: structural safety (flexural strength ≥20MPa), ease of maintenance, and material recyclability. Through BIM parametric design, Qinglong's technical team breaks down connection nodes into three parts—load-bearing components, adjustment components, and locking devices—achieving an installation precision tolerance of ≤2mm while meeting later replacement needs.

Key Technical Path: Modular System and Innovative Node Development

At the technical implementation level, Qinglong adopts a dual-track approach of "prefabricated modularization + dynamic adjustment." During the factory prefabrication stage, parametric modeling of nodes is performed using RHINO/Grasshopper software, and GRC panels are integrally cast with aluminum alloy connectors to ensure an interfacial bond strength of over 3.5MPa. During on-site installation, 3D laser scanning positioning technology is used in combination with adjustable bolts to achieve fine three-dimensional adjustments, solving the non-detachable problem of traditional welded connections. For projects in typhoon-prone areas, a "seismic-resistant detachable joint" has been developed that absorbs impact energy through a spring damping device, with its durability verified by 150,000 fatigue tests.

Engineering Practice and Full Lifecycle Value

In a cultural center project in a provincial capital city, Qinglong applied a detachable GRC curtain wall system to achieve three major breakthroughs: 1) 1,200 irregular double-curved panels achieved 90% factory prefabrication through standardized connection components, improving on-site installation efficiency by 40%; 2) three panel replacements can be performed within the design life cycle, reducing construction waste by 50% compared with traditional curtain walls; 3) the installation location and performance parameters of each panel are recorded in a backend database, with RFID chips enabling full lifecycle traceability. The project won the "China GRC Industry Innovation Engineering Gold Award," becoming a benchmark case for detachable technology.

As a contributing editor of the Technical Standard for Glass Fiber Reinforced Cement (GRC) Applications in Buildings (JGJ/T423-2018), Qinglong consistently promotes the standardization of detachable connection technology. In the future, with the development of UHPC and GRC composite systems, curtain wall connection systems will achieve a balance between higher strength and better maintainability, injecting new momentum into the sustainable development of the architectural decoration industry.