How Is UHPC Shaping Combined with Metal Components? Analysis of Stable and Compatible Solutions

UHPC shapes can be combined with metal components in four main ways: "embedded, externally mounted, welded, and bolted connections". The core is to ensure firm connection, anti-corrosion compatibility, and deformation coordination. Through anti-corrosion treatment and elastic joint design, Qinglong ensures that the joints in projects such as the Shanghai Astronomy Museum and Sanya Yingbin No.1 remain free of loosening and corrosion.

I. Core Combination Methods and Applicable Scenarios

Different methods suit different needs. Embedded connection: metal connectors (steel plates, bolts) are pre-embedded during UHPC production, suitable for load-bearing connections; Qinglong's embedding depth is ≥50mm with bond strength ≥1.0MPa. Externally mounted connection: after UHPC forming, metal components are bolted onto the surface, suitable for decorative combinations; Qinglong's externally mounted metal parts are ≥3mm thick with fixing point spacing ≤500mm. Welded connection: pre-embedded metal inserts are welded on-site to metal components, suitable for large-span load-bearing; Qinglong applies anti-corrosion coating at welds, with weld strength ≥5.0MPa. Bolted connection: stainless steel bolts penetrate the UHPC to connect with metal components, suitable for detachable adjustment; Qinglong's bolt diameter is ≥8mm with pull-out resistance ≥5kN.

II. Key Combination Technologies: Stability and Compatibility Assurance

Technical measures prevent connection failure. Anti-corrosion treatment: metal components use stainless steel or hot-dip galvanizing + fluorocarbon coating; Qinglong's metal parts have an anti-corrosion rating of ≥C4 with salt spray corrosion resistance ≥1000 hours. Elastic joints: rubber gaskets are set between metal components and UHPC to absorb thermal expansion and contraction deformation; Qinglong's gaskets have an elastic recovery rate ≥90% and allow ±3mm displacement. Bond enhancement: anti-slip grooves are provided on the surface of embedded connectors; Qinglong's anti-slip grooves are ≥3mm deep, increasing bond strength by 40%. Sealing treatment: joints are filled with weather-resistant sealant to prevent rainwater penetration; Qinglong's sealant has an elongation rate ≥500% and is highly compatible with both materials.

III. Qinglong Project Practice and Technical Advantages

Real-world cases verify the combination results. Shanghai Astronomy Museum public art sculpture: the UHPC sculpture and metal support structure adopt an embedded + welded combination, with load capacity ≥5 tons and no loosening after 5 years of use; Sanya Yingbin No.1 commercial complex: UHPC exterior walls and metal decorative lines adopt bolted connection + sealing treatment, with no corrosion after 6 years in the coastal high-salt-spray environment; Shenzhen Yirui Biotechnology Building: UHPC sunshades and metal keels adopt embedded connection, with wind load resistance of 0.8kPa and no deformation through typhoons; Technical advantages: holds 8 patents related to combination methods and participated in formulating the "Technical Specification for Connections between UHPC and Metal Components"; Standardized process: provides full-process services from design, production, and installation to maintenance, with Qinglong's joint inspection coverage at 100%; Quality commitment: 8-10 year warranty on joint areas covering loosening, corrosion, cracking, and other issues, with free maintenance during the warranty period.