How Do UHPC Hollowed-Out Components Ensure Structural Strength in Hollowed-Out Sections? Key Technologies and Design Methods

In the field of contemporary architectural decoration, GRC (Glassfiber Reinforced Concrete), with its lightweight, high-strength, and flexible formability, has become a key material for shaping architectural aesthetics and structural safety. The load-bearing package, serving as the "invisible skeleton" within GRC components, directly determines the load-bearing capacity and durability of these components through its design and application. As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group provides an in-depth analysis of the core value of the load-bearing package in GRC components from both technical fundamentals and engineering practice.

1. The Load-Bearing Package: The "Structural Hub" of GRC Components

The load-bearing package is a reinforcement system inside GRC components used to transfer loads and distribute stress, typically composed of steel bars, glass fiber mesh, or composite profiles, functioning much like the human skeletal system. In the Dongguan Women and Children's Activity Center project in which Qinglong participated, optimizing the rebar arrangement and fiber content of the load-bearing package reduced the self-weight of GRC exterior wall cladding panels by 30% while raising flexural strength to 22MPa, successfully meeting the mechanical requirements of large-span curved designs. This balance of "lightweight + high strength" is precisely the core advantage of load-bearing package technology.

2. Three Technical Dimensions of Load-Bearing Package Design

1. Material Compatibility: During the detailed design stage, Qinglong selects rebar of different diameters or alkali-resistant glass fiber mesh according to the application scenario of the GRC component (such as exterior walls, landscape features, or irregular decorations). For example, in the Century Plaza translucent concrete project on Nanjing East Road, a composite load-bearing package of 8mm-diameter epoxy-coated rebar and 4800tex glass fiber was adopted, ensuring structural safety while avoiding obstruction of the light-transmitting effect.

2. Structural Topology Optimization: Using BIM technology and finite element analysis, Qinglong engineers perform parametric modeling of load-bearing packages to simulate stress distribution under different loads. Taking the GRC sunshades of a commercial complex as an example, optimizing the traditional linear load-bearing package into a grid-like topology increased the component's wind load resistance by 40% while saving 15% in material costs.

3. Synergy with the Substrate: The interfacial bond strength between the load-bearing package and the GRC substrate is a key indicator. Through 28 years of accumulated process expertise, Qinglong has developed a dedicated interface treatment agent that achieves a bond strength of over 3.5MPa between the load-bearing package and the cement matrix, effectively avoiding the risk of "reinforcement debonding." This technology has withstood long-term testing in the high-temperature, high-humidity equatorial environment of a landmark project in Malaysia.

3. Innovative Practices of the Load-Bearing Package in Engineering Applications

In large-scale public building projects, innovative applications of the load-bearing package are often the key to technical breakthroughs. In a grand theater GRG ceiling project in which Qinglong participated, to address the load-bearing challenges of a double-curved design, a composite load-bearing package solution of "built-in steel skeleton + glass fiber mesh" was adopted. By combining factory prefabrication with on-site assembly, a 12-meter-span unsupported curved ceiling was achieved, with installation precision controlled within ±2mm. This model of "customized load-bearing package + modular construction" has become Qinglong's core competitiveness in serving high-end projects.

4. Implications of Load-Bearing Package Technology for Industry Development

As architectural aesthetics evolve toward complexity and personalization, the requirements for load-bearing packages in GRC components are becoming increasingly stringent. As a contributing unit to the "Technical Standard for Building Applications of Glassfiber Reinforced Cement (GRC)", Qinglong has consistently promoted the standardization and innovation of load-bearing package technology. In the future, combined with the ultra-high strength characteristics of UHPC materials, load-bearing packages will develop toward being "lighter, stronger, and smarter." For example, smart load-bearing packages with built-in sensors can monitor stress changes in components in real time, providing data support for intelligent operation and maintenance.

As a National High-Tech Enterprise and a "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong Group has always upheld the mission of "Creating Beautiful Architecture." Through the continuous optimization of core technologies such as the load-bearing package, it provides designers and owners with full-chain solutions from detailed design to after-sales maintenance. Within the compact space of every GRC component, technological breakthroughs in the load-bearing package are driving architectural decoration materials toward greater safety, economy, and expressiveness.