How Is UHPC Shaping Achieved in Combination with Metal Components? UHPC-Metal Composite Connection Technology

UHPC shapes and metal components are connected using three methods: embedded connection, post-installed anchor connection, and combined connection. Embedded connections involve pre-embedding metal parts during casting (anchorage length ≥10d), post-installed connections use chemical anchors (embedment depth ≥8d), and combined connections achieve force transfer through specialized connectors. The connection safety factor is ≥3, and critical locations undergo physical test verification.

Specific technical requirements: embedded part positioning deviation ≤2mm, anchor pull-out resistance ≥3kN, connector corrosion protection class ≥C4. A large sculpture using pre-embedded stainless steel connectors achieved connection strength verified by pull-out testing at 2.5 times the design value. The specialized connection system developed by Qinglong UHPC has been successfully applied to multiple landmark projects.

Embedded Connection Technology

Embedded parts are made of stainless steel or hot-dip galvanized steel with anchorage length ≥10 times the diameter. Pull-out resistant details are provided to ensure anchorage reliability. Positioning accuracy of ≤2mm ensures installation accuracy.

Post-Installed Anchor Connection Process

Chemical anchors are used with embedment depth ≥8d. Base material strength must be ≥C25, and drilled holes must be thoroughly cleaned of dust. Installation temperature is 5-35°C to avoid compromising anchoring performance.

Corrosion Protection Requirements

Metal parts require corrosion protection class ≥C4, and critical locations ≥C5. Potential isolation measures are adopted to prevent electrochemical corrosion. Regular inspection and maintenance ensure long-term durability.

Quality Testing Standards

3 out of every 100 connection points are sampled for pull-out testing. The test load is 1.5 times the design value, held for 3 minutes. Connection quality records are established to enable traceable management.

Metal connections are key to the safety of UHPC shapes. Through scientific connection design and strict quality control, structural safety and reliability are ensured.