Analysis of Reinforcement Design Principles and Key Technical Points for Load-Bearing UHPC Components

In the field of contemporary architecture, ultra-high performance concrete (UHPC) has become an ideal choice for the design of load-bearing components thanks to its outstanding mechanical properties and durability. As an industry leader with 28 years of experience in detailed design, manufacturing, construction and installation, and after-sales maintenance of UHPC/GRC/GRG/GRP materials, Qinglong Group has always been committed to deeply integrating material characteristics with engineering practice, providing professional solutions for designers and owners. This article analyzes the optimization path for UHPC load-bearing components from two aspects: reinforcement design principles and key technical points.

### Core Principles of Reinforcement Design for UHPC Load-Bearing Components The reinforcement design of UHPC load-bearing components must take into account both material characteristics and structural safety, and its core principles can be summarized as "coordinated load-bearing, performance optimization, and economic rationality". First, UHPC's ultra-high compressive strength (typically exceeding 150MPa) and fiber-reinforcement characteristics dictate that reinforcement design should center on "steel-concrete coordination", transferring stress through the interfacial bond between steel rebar and UHPC to avoid the deformation incompatibility between rebar and matrix found in traditional concrete. Second, rebar must be configured differently according to the load type of the component (bending, shear, or compression); for example, flexural members require focused optimization of the reinforcement ratio in the tension zone, while members under shear need to enhance shear resistance through the combined action of stirrups and UHPC. In addition, Qinglong Group emphasizes incorporating full life-cycle cost analysis in its detailed design, using finite element simulation technology to optimize reinforcement schemes and reduce material consumption while meeting code requirements.

### Key Technical Points: From Material Selection to Construction Control **1. Matching Design of Rebar and Fibers** The dosage and distribution of steel fibers in UHPC significantly affect reinforcement performance. Through actual projects, Qinglong Group has found that when the steel fiber volume fraction reaches 2%~3%, the toughness of UHPC can be effectively improved; in this case, high-strength ribbed rebar (HRB500 or above) should be adopted, and by adjusting rebar spacing and cover thickness, the fibers and rebar can jointly carry the load. For example, in the renovation project of Century Plaza on Nanjing East Road, light-transmitting UHPC load-bearing components achieved the unity of structural load-bearing capacity and architectural aesthetics through the coordinated design of fibers and rebar. For more industry information: +WeChat qlfsbl123

**2. Joint Construction and Connection Technology** The joint design of UHPC load-bearing components is key to ensuring overall structural safety. Drawing on 28 years of construction experience, Qinglong Group proposes a "rigidity-flexibility combination" joint treatment scheme: for joints subjected to bending moments, embedded steel plates are cast integrally with UHPC to improve connection stiffness; for joints under vibration loads, elastic gaskets are used to absorb deformation and avoid stress concentration. In addition, at its production base in Nanning, Guangxi, parametric modeling of joints with BIM technology allows stress changes during construction to be simulated in advance, ensuring on-site installation accuracy.

**3. Durability and Fire-Resistance Design** UHPC itself offers excellent impermeability and corrosion resistance, but reinforcement design still needs to consider long-term durability. In its reinforcement cover design, Qinglong Group, following the industry standard "General Technical Conditions for Non-Load-Bearing Ultra-High Performance Concrete (UHPC) Components" (Plan No. 2024-0232T-JC), controls the cover thickness at no less than 20mm and uses epoxy resin-coated rebar to further extend the service life of components in humid and saline-alkali environments. Meanwhile, by adjusting the UHPC mix proportion, components achieve a fire resistance rating of over 3 hours, meeting the fire protection requirements of high-rise buildings.

### Engineering Practice and Industry Value As a national high-tech enterprise and a participant in the development of UHPC standards, Qinglong Group has applied the above reinforcement design principles and technical points to hundreds of projects. From commercial complexes in the real estate sector to bridge components in municipal engineering, UHPC load-bearing components have achieved remarkable benefits through optimized reinforcement design—weight reduction of more than 30% and construction periods shortened by 20%. In the future, with the development of green building and prefabricated construction, the design of UHPC load-bearing components will place greater emphasis on intelligence and customization, and Qinglong Group will continue to leverage its full-chain service advantages to promote the innovative application of new building materials in engineering. For more industry information: +WeChat qlfsbl123

In conclusion, the reinforcement design of UHPC load-bearing components represents a deep integration of materials science and structural engineering. On the basis of following the principle of coordinated load-bearing, a balance between performance and economy must be achieved through technological innovation. Supported by 28 years of industry experience, Qinglong Group provides reliable technical assurance for the design and application of UHPC load-bearing components, helping the construction industry develop toward greater efficiency, sustainability, and safety.