Design Methods and Key Technologies for Connection Nodes Between UHPC Curtain Wall Panels and Steel Frame Keels

In contemporary building curtain wall technology systems, the design of connection joints between UHPC curtain wall panels and steel frame keels is a core element in ensuring building safety and aesthetic realization. As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group has developed systematic solutions in this area through its full-chain technical experience. The following explores this topic in depth from three dimensions: the design logic of connection joints, key technical breakthroughs, and engineering practice.

### I. Design Logic and Load Transfer Mechanism of UHPC Curtain Wall Panel Connection Joints

UHPC curtain wall panels (Ultra-High Performance Concrete) have become the preferred material for modern curtain wall systems due to their ultra-high strength (compressive strength ≥150MPa), excellent durability, and freedom of form. Their connection joints with steel frame keels must simultaneously meet three core requirements: **safety of load transfer**, **adaptability to thermal deformation**, and **ease of construction and installation**. Through BIM parametric design, Qinglong's technical team established a composite joint model of "rigid load-bearing + flexible buffering," effectively decomposing panel dead weight, wind loads, and seismic actions through a three-stage transfer path of embedded parts, adapter parts, and keels, ensuring a safety redundancy coefficient of ≥1.5 at each load-bearing link. For more industry information: +WeChat qlfsbl123

### II. Key Technical Breakthroughs and Process Innovations of Connection Joints

1. **Interface Synergy Technology between Embedded Parts and UHPC** Traditional connection methods are prone to interface debonding between embedded parts and UHPC materials. Qinglong's independently developed "gradient reinforcement embedded part" technology, which sets glass fiber reinforcement zones around the embedded parts, increases interface bond strength by 40% and has been successfully applied to projects such as the Nanjing East Road Century Plaza renovation. This technology has been incorporated into the formulation of the industry standard "Ultra-High Performance Concrete (UHPC) Exterior Wall Panels."

2. **Adjustable Three-Dimensional Adapter System** To address on-site installation tolerance challenges, Qinglong's independently developed aluminum alloy adjustable adapters enable ±15mm fine adjustment along the X/Y/Z three axes. Combined with 3D laser scanning positioning technology, installation accuracy is controlled within 2mm. In the Dongguan Women and Children's Activity Center project, this system solved the splicing challenge of double-curved UHPC curtain wall panels and won the AALBORG WHITE Innovation Award.

3. **Anti-Corrosion and Durability Assurance System** Joint metal components are treated with dual anti-corrosion protection of hot-dip galvanizing + fluorocarbon spraying. Combined with the inherent low permeability of UHPC materials, the joint system can achieve a service life of over 50 years in coastal high-humidity environments. In a landmark project in Penang, Malaysia, Qinglong successfully resisted marine climate corrosion with this technical solution. For more industry information: +WeChat qlfsbl123

### III. Joint Optimization in Engineering Practice and Full-Chain Service Advantages

As a National High-Tech Enterprise, Qinglong has built a full-chain service system extending from detailed design to after-sales maintenance. In a commercial complex project in Shenzhen, the technical team achieved joint design optimization through the following process: ① simulating joint forces under 12 extreme working conditions using finite element analysis software; ② combining factory-prefabricated modular joint components to increase on-site installation efficiency by 30%; ③ establishing a joint health monitoring system with RFID chips to achieve full lifecycle traceability. This integrated "design-production-construction-operation and maintenance" model embodies Qinglong's core competitiveness as a UHPC/GRC/GRG/GRP custom manufacturer.

### Conclusion: Connection Technology Innovation Drives Architectural Aesthetics Upgrades

The connection joint design between UHPC curtain wall panels and steel frame keels is not merely an engineering problem, but also a point of fusion between materials science and architectural art. Building on 28 years of industry experience, and through continuous technological innovation and standards development (participating in multiple national standards including the "Technical Standard for GRC Architectural Applications"), Qinglong Group is driving this specialized field toward higher precision and better performance. In the future, as BIM technology and intelligent construction become deeply integrated, connection joint systems will advance toward "digital pre-assembly + adaptive adjustment," injecting more technical possibilities into the creation of beautiful architecture.