How Many Connection Methods Are There Between UHPC Decorative Components and the Main Structure, and Application Analysis

In the field of contemporary architectural decoration, UHPC (Ultra-High Performance Concrete) has become the preferred material for landmark buildings and high-end projects thanks to its outstanding mechanical properties and design expressiveness. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the technical core of connecting decorative components to the main structure. This article systematically analyzes the mainstream connection methods for UHPC decorative components and their engineering application logic, providing professional reference for designers and owners.

1. The Core Value of UHPC Decorative Component Connection Technology

The connection system of UHPC decorative components is the key link in unifying architectural aesthetics with structural safety. Compared with traditional materials such as GRC (Glass Fiber Reinforced Concrete), UHPC, with its compressive strength exceeding 150MPa and excellent toughness, offers greater flexibility in connection node design. Through production practice at its Nanning production base with an annual capacity of 600,000 square meters, Qinglong Group has summarized three major connection design principles—"safety redundancy, construction adaptability, and later-stage maintainability"—ensuring the long-term stability of components under dead weight, wind loads, and thermal stress.

2. Mainstream Connection Methods and Their Adaptation to Engineering Scenarios

1. Mechanical Anchored Connection: A Reliable Choice for Industrial-Style Buildings
Fixing UHPC components to the main structure with stainless steel bolts or embedded parts is a common solution for exterior wall cladding panels of commercial complexes and landscape components. In the Century Plaza renovation project on Nanjing East Road, Qinglong adopted customized stainless steel connectors combined with 3D laser positioning technology to achieve precise alignment between translucent UHPC panels and the steel structure, keeping installation tolerances within 2mm. This method is suitable for flat panel components bearing heavier loads, especially for scenarios requiring later maintenance and replacement.

2. Wet Connection Grouting Technology: A Seamless Solution for Irregular Shapes
For complex UHPC components such as double-curved surfaces and openwork relief carvings, Qinglong's self-developed non-shrink grouting connection technology demonstrates unique advantages. In the Dongguan Women and Children's Activity Center project, the grouted connection between embedded rebar and pre-reserved holes in UHPC components achieved a rigid-flexible transition between Roman columns and the main structure, successfully addressing thermal expansion and contraction in the high-temperature, high-humidity environment of the Lingnan region. This process is particularly suitable for indoor and outdoor decoration scenarios requiring design freedom, such as GRC/GRG.

3. Back-Bolted Dry-Hanging System: A Lightweight Innovation for High-Rise Curtain Walls
Back-bolted connections, evolved from stone curtain wall technology, combine UHPC panels with the keel system through specialized metal hangers. In the industry standard "Ultra-High Performance Concrete (UHPC) Exterior Wall Panels," which Qinglong participated in formulating, the technical parameters for back-bolt spacing and embedment depth are clearly specified. In an airport project in Saudi Arabia, this system enabled 8mm-thick UHPC cladding panels to achieve lightweight installation at only 35kg per square meter, a 60% weight reduction compared to traditional stone curtain walls.

3. Three Key Decision Dimensions for Selecting Connection Technology
Qinglong's technical team recommends evaluating connection solutions from three dimensions: "structural safety, construction efficiency, and full life-cycle cost." Public buildings should prioritize the maintainability of mechanical anchoring, cultural landmark projects are recommended to adopt wet connections for shape integrity, and super high-rise curtain walls should focus on the lightweight advantages of back-bolted systems. As a national "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong offers connection system solutions backed by 58 patented technologies, providing full-process services from detailed design to installation guidance according to project requirements.

The development of connection technology for UHPC decorative components is driving building envelopes to leap from "functional fulfillment" to "artistic expression." Building on 28 years of engineering practice, Qinglong Group will continue to explore connection innovations for UHPC and GRC/GRG/GRP materials, providing technical support for its mission of creating beautiful architecture. Whether for key domestic projects or overseas projects in Southeast Asia, choosing a professional connection solution means choosing the dual insurance of building safety and design value.