Vertical Load Transfer Unitized Window Wall System Customizable Upper Lower Transom Connection

Unitized Curtain Wall Upper-lower Transom Connection Details is a core technical node for vertical structural load transfer and thermal deformation coordination in unitized curtain wall modules, specifically designed to address inter-story displacement, gravity load transfer, and thermal stress expansion in high-rise buildings. The system employs a high-strength aluminum alloy transom as the main body, integrated with a multi-directional plug-in connection mechanism. Through stainless steel bolt sets with slotted holes, it enables dynamic adjustment in the vertical direction, allowing units to compensate for displacement of up to ±12mm along the Z-axis (vertical), while absorbing micro-deformations along the X/Y axes (horizontal) via elastic gasket sets. This effectively balances three-dimensional deformations caused by building structural settlement, wind-induced vibrations, and seasonal temperature variations.

The connection node establishes a three-layer functional sealing system: the outermost layer is a continuous silicone weather-resistant sealant injection layer to resist wind and rain erosion; the middle layer features a closed-cell EPDM compression seal strip, forming an airtight barrier during unit stacking; the innermost layer comprises a "passive drainage cavity" formed by water drainage channels and air pressure balance passages, utilizing Bernoulli's principle to automatically drain seepage water and stabilize cavity air pressure. All connectors undergo a 240-hour salt spray test and fluorocarbon anti-corrosion coating treatment. Their mechanical performance has been validated through finite element analysis, capable of withstanding the highest-level wind pressure (Level 12) and seismic action (9-degree fortification) under repeated loads as specified in the national standard GB/T 21086.

This node system adopts standardized prefabrication processes, supporting factory-preinstalled positioning pins and on-site rapid alignment during hoisting, enabling the vertical connection of over 800 square meters of units per day. It is suitable for super high-rise buildings requiring continuous stacking of curtain wall units, large-span cantilevered facades, and curved gradient curtain wall projects. Through a modular and precise connection logic, it achieves a balance between the mechanical reliability and construction economics of the building envelope, providing a paradigm solution for vertical structural connections in modern curtain wall engineering.

Hanlun Curtain Wall

Foshan Hanlundimei International Trading Co., Ltd. is a professional provider of international high-end aluminum door and window system solutions. We are not merely traders of premium products but also “international movers” and “value transmitters” of cutting-edge technology and masterful craftsmanship.

Defining Precision with Technology, Driving the Global Market with Strength
We delve deep into the source of the global supply chain, selecting and integrating top-tier aluminum profile systems, innovative hardware, and smart accessories. Our core competitiveness stems from a profound understanding and application of core technologies such as structural mechanics, thermal and acoustic insulation, and smart connectivity in door and window systems. Through rigorous technical adaptation and localized solutions, we offer overseas partners and end-users high-performance, high-durability, and high-design aesthetic door and window products that exceed expectations. We integrate China’s manufacturing prowess and innovative technology into architectural and living spaces around the world.

Building Foundations with Integrity, Uniting the Future with Culture
We firmly believe that exceptional trade begins with deep trust. With “Hanlundimei, Trust Reaching the World” as our core ethos, we embed “integrity, professionalism, collaboration, and win-win” into every aspect of our operations. Internally, we foster a pragmatic, proactive, and expertise-respecting team culture that encourages continuous learning and technological innovation. Externally, we regard our clients as long-term strategic partners, building unbreakable bridges of cooperation through transparent processes, efficient responsiveness, and reliable full-cycle services.

We go beyond the cross-border flow of products, striving to become a value engine connecting Chinese intelligent manufacturing with the global high-end market. Foshan Hanlundimei International Trading Co., Ltd. looks forward to collaborating with you, leveraging our solid technological foundation and trustworthy corporate character to jointly open a new chapter in the world of doors and windows.