Analysis of Connection Joint Design Methods and Key Technologies Between UHPC Curtain Wall Panels and Steel Frame Keels

In contemporary building curtain wall technology, the connection joint design between UHPC curtain wall panels and steel frame keels is a core element in ensuring the balance between building safety and aesthetics. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has always upheld the mission of "creating beautiful architecture," continuously achieving breakthroughs in connection joint technology to provide safe and reliable solutions for landmark projects worldwide.

Design Logic and Technical Challenges of Connection Joints between UHPC Curtain Wall Panels and Steel Frame Keels

UHPC (Ultra-High Performance Concrete), with its ultra-high strength, excellent durability, and design freedom, has become the preferred material for high-end building curtain walls. Its connection with steel frame keels must simultaneously meet three major requirements: structural safety, deformation compatibility, and construction feasibility. Through BIM parametric design and physical mechanical simulation, Qinglong's technical team innovatively proposed a composite joint system of "flexible hinging + rigid limiting": while transmitting loads, it allows curtain wall panels to undergo slight displacements under temperature changes and seismic actions, avoiding cracking risks caused by stress concentration. In a convention and exhibition center project, this joint design enabled 20-meter-span UHPC curtain wall panels to achieve zero leakage and zero deformation, far exceeding industry standards.

Key Technological Innovations in Connection Joints and Full-Chain Assurance

As a national high-tech enterprise, Qinglong has developed three core advantages in connection joint technology: first, adopting a composite anchoring technology of stainless steel embedded parts and chemical anchor bolts with the UHPC matrix, increasing tensile load-bearing capacity by 40%; second, developing a dedicated joint waterproofing system that raises the water tightness rating to IPX8 through multi-layer sealing design; third, employing 3D laser scanning for positioning and installation to achieve millimeter-level precision control. Backed by an annual production capacity of 600,000 square meters at its production base in Nanning, Guangxi, Qinglong can complete full-process control from joint detailed design and mold development to component prefabrication, ensuring the practical implementation of technical solutions.

Joint Optimization in Engineering Practice and Industry Value

In the Century Plaza renovation project on Nanjing East Road, Qinglong innovatively designed detachable connection joints to meet the special requirements of light-transmitting UHPC curtain wall panels, achieving nighttime lighting effects while facilitating later maintenance and replacement. This technology won the Silver Award of the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award, becoming an industry benchmark. As a participant in drafting the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)," Qinglong has always integrated joint technology R&D with standards development, promoting the large-scale application of UHPC curtain wall systems in real estate, municipal, transportation, and other sectors.

From material selection to joint details, from design development to construction installation, Qinglong provides expert-level solutions for designers and owners with its full-chain service capabilities. Moving forward, Qinglong will continue to uphold the values of "honesty, striving, trust, and collaboration," maintain its leading position in the niche segments of UHPC/GRC/GRG/GRP material applications, and contribute more technical achievements that combine safety and aesthetics to the construction industry.