How UHPC Shapes Achieve Integration with Metal Components: Design Methods, Technical Key Points, and Engineering Application Analysis

In the field of contemporary architectural design, UHPC (Ultra-High Performance Concrete), with its outstanding mechanical properties and design freedom, is forming an efficient synergy with metal components, providing new possibilities for architectural envelope and structural innovation. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has been deeply involved in material integration practices across hundreds of complex projects. This article systematically analyzes the path to integrating UHPC shapes with metal components from three dimensions: design logic, technical breakthroughs, and engineering verification.

I. Synergistic Design Logic of UHPC and Metal Components: From Functional Complementarity to Aesthetic Symbiosis

The ultra-high strength of UHPC (compressive strength up to 150-200MPa) forms a natural complement to the ductility of metal. During the detailed design stage, a three-dimensional model of "material performance—structural loading—aesthetic expression" needs to be established: for large-span cantilevered shapes, using UHPC as the primary load-bearing component with a metal skeleton as auxiliary support can reduce dead weight by more than 40%; in curved curtain wall systems, UHPC's flowability is leveraged to achieve complex textures while metal connectors ensure installation precision. A typical example is the Nanjing Road Century Plaza renovation project, where the combination of light-transmitting UHPC panels and aluminum alloy keels meets light transmittance requirements while achieving millimeter-level jointing through the metal framework. In the Dongguan Women and Children's Activity Center project, Qinglong Group innovatively adopted parametric design tools to control node errors between UHPC relief panels and stainless steel edge trims within ±2mm, embodying the design philosophy of "combining rigidity with flexibility."

II. Key Technical Breakthroughs: Material Compatibility, Connection Processes, and Durability Assurance

**1. Material Interface Treatment Technology** The difference in thermal expansion coefficients between UHPC and metal (UHPC approximately 10×10⁻⁶/℃, aluminum alloy approximately 23×10⁻⁶/℃) needs to be resolved through an elastic connection layer. Qinglong's R&D team uses an epoxy resin-based composite material as the transition layer, which has been verified through 2,000 thermal cycle tests (-40℃ to 80℃) to effectively absorb deformation stress. In a landmark project in Zhuhai, this technology successfully resolved the thermal differential cracking problem between UHPC sunshade panels and steel structure supports.

**2. Integrated Forming Process** For special-shaped components, the "UHPC precasting + metal embedded parts pre-embedding" process is adopted, with 3D scanning positioning ensuring precise matching between embedded parts and component geometry. The 6-meter-class CNC machining center at Qinglong's Guangxi production base enables single-pour forming of metal inserts together with UHPC components, raising production efficiency by 30% over traditional processes. For more industry information: +WeChat qlfsbl123

**3. Systematic Durability Solutions** The anti-corrosion treatment of metal components and the denseness of UHPC need to be considered in synergy. Qinglong applies dual protection of hot-dip galvanizing + fluorocarbon spraying (salt spray test up to 5,000 hours), and combined with UHPC's low porosity (<1%), this extends the service life of coastal projects to more than 50 years. In a seaside hotel project in Malaysia, this solution successfully withstood high humidity and salt spray corrosion.

III. Engineering Application Evidence: Diverse Practices from Landmark Buildings to Functional Components

In the field of high-end public buildings, the combination of UHPC and metal has become a key means of creating architectural landmark identity. For example, in a provincial capital grand theater project, the facade uses a composite system of UHPC double-curved panels (minimum radius of curvature 300mm) and titanium-zinc panels, achieving a "floating" effect through concealed metal hangers; in garden landscape applications, Qinglong's UHPC benches paired with stainless steel brackets combine aesthetic form with ergonomics, with a single component supporting up to 500kg. Notably, in technical exchanges with industry peers such as Guangdong Shiji Shangpin and Shantaixin Industrial, the industry generally agrees that UHPC-metal composite systems cost 20%-30% less than all-metal solutions and are easier to customize for individual needs.

As a national high-tech enterprise and a participant in formulating UHPC industry standards, Qinglong Group has always upheld the mission of "creating beautiful architecture." Through 28 years of technical accumulation, it has built full-chain service capabilities from material R&D to project delivery. Whether it is structural innovation in super high-rise curtain walls or artistic expression in cultural buildings, the fusion of UHPC and metal components will bring more possibilities to the construction industry. In the future, as BIM technology and intelligent construction advance, the synergistic application of the two will move into a more precise and efficient new stage. For more industry information: +WeChat qlfsbl123