How Do UHPC Hollow-Out Components Ensure Structural Strength at the Hollow-Out Sections?

The structural strength of UHPC openwork components is ensured through a combination of fiber reinforcement, local thickening, and finite element analysis, ensuring that openwork areas remain safe while meeting aesthetic requirements. In the openwork panel project for Hainan Changying Global 100 Fantasy Park, Qinglong Group raised the openwork ratio to over 50% through optimized design while maintaining a flexural strength of over 12MPa—far exceeding ordinary concrete by 3-4 times. This technology enables UHPC to strike a balance between artistic form and structural safety, opening up possibilities for architectural innovation.

Fiber reinforcement is key. Steel fibers with a volume content of 2%-3% and a length of 12-20mm form a three-dimensional network at the openwork edges. Through robotic spraying, Qinglong Group achieves a fiber distribution uniformity of ≥95%, effectively bridging cracks. The local thickening design increases the thickness of openwork edges by 20%-30%, reducing stress concentration. Finite element analysis optimizes openwork patterns, avoiding sharp corners and reducing the stress concentration factor to below 1.5.

Process control guarantees quality. Fiber clustering is avoided during casting, and vacuum dewatering improves density. Qinglong Group's openwork components meet strength standards and are widely applied. With scientific design, openwork UHPC is both safe and aesthetically pleasing.