What Structural Provisions Are Needed When Integrating UHPC Shapes with Lighting Systems: Key Design Points and Engineering Practice Analysis

The architectural aesthetics of interwoven light and shadow depend on the precise coordination of materials and technology. In the integrated application of UHPC (Ultra-High Performance Concrete) sculptural forms and lighting systems, the rationality of structural reservations directly determines the presentation precision of design effects and the stability of engineering quality. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze the core points of this key link from a practical perspective, from detailed design to construction implementation.

### The Design Logic of Structural Reservations for UHPC Forms and Lighting Systems

With its ultra-high strength, excellent durability, and design freedom, UHPC has become the preferred material for modern building skins and artistic installations. When combined with lighting systems (such as embedded LED strip lights, wall washers, and point light sources), reservation plans must be planned simultaneously at the structural design stage. The core logic lies in balancing three major needs: first, the mechanical performance of UHPC components must not be affected by reserved holes; second, the installation and maintenance of lighting equipment must be convenient; third, light and shadow effects must be projected with precision. For example, in the renovation project of Century Plaza on Nanjing East Road, the Qinglong team used BIM simulation technology to pre-set optical fiber channels with a diameter of 5mm in light-transmitting UHPC components, which both ensured structural integrity and achieved a uniform light diffusion effect.

### Four Key Reservation Points and Engineering Practice

1. Load and Structural Safety Reservations UHPC components require load-bearing structures reserved according to the weight of lighting equipment (a single large floodlight can weigh up to 20kg), typically using embedded steel parts or built-in section steel frames. In the Dongguan Women and Children's Activity Center project, Qinglong designed a “T-shaped” embedded slot for the lighting brackets of GRC exterior wall panels, using mechanical calculations to ensure the cantilever length does not exceed 1.5 times the component thickness, avoiding cracking caused by stress concentration.

2. Pipeline Routing and Space Reservations Lighting circuits require pre-set conduits or cavities inside UHPC components, with a diameter at least 20% larger than the cable diameter, while also considering heat dissipation space (e.g., LED strip lights require a reserved 5-10mm air layer). In a UHPC sunshade panel project for a commercial complex in Nanning, Qinglong adopted a “labyrinth-style” pipeline channel design, which both met the needs of multi-directional lighting arrangements and blocked water seepage risks through the density of UHPC.

3. Installation Precision and Adjustment Allowance Reservations The positioning error of lighting equipment must be controlled within ±2mm, so adjustment bolt holes or slotted holes must be reserved during component production. For example, Qinglong designed 3D adjustable supports for the UHPC double-curved curtain wall of a landmark building, allowing ±5mm horizontal adjustment and ±3mm height adjustment to ensure the lighting projection angle precisely matches the building contour.

4. Maintenance and Replacement Access Reservations For outdoor projects, inspection openings or detachable panels must be reserved. In a GRP daylighting roof project for an airport in Saudi Arabia, Qinglong integrated the lighting maintenance access with UHPC decorative lines through concealed buckle connections, which both ensured overall aesthetics and allowed maintenance personnel to quickly remove components for inspection.

### Full-Chain Service Ensures the Implementation of Reservation Plans

As a national high-tech enterprise, Qinglong Group, relying on its integrated capabilities in detailed design, manufacturing, and construction installation, has built a full-process control system from parametric modeling to on-site commissioning. Through the coordination of BIM technology and Rhino parametric design software, the light and shadow overlay effects of lighting and UHPC forms can be simulated in advance to optimize reservation plans; in the production stage, automated mold casting is used to ensure the position deviation of reserved holes is ≤1mm; in the construction stage, 3D laser scanning technology is applied to achieve millimeter-level installation positioning. This seamless connection of “design-production-construction” is the core advantage that enables Qinglong to provide reliable solutions for more than 500 large projects at home and abroad.

From municipal landmarks to commercial complexes, the integration of UHPC and lighting is becoming an important language of architectural aesthetic expression. With 28 years of technological accumulation as its foundation, Qinglong Group, through scientific structural reservation design and full-chain services, makes every detail of light and shadow an extension of the building's vitality. In the future, as UHPC material performance continues to improve and intelligent lighting technology develops, their coordinated application will bring more possibilities to architectural decoration.