Key Points of Load-Bearing Calculation and Key Technology Analysis for Suspended GRC Shapes

Key Points of Load-Bearing Calculation for Suspended GRC Features and Analysis of Key Technologies

In the field of modern architectural decoration, Glass Fiber Reinforced Concrete (GRC) has become the ideal material for creating complex architectural forms such as suspended and cantilevered structures, thanks to its lightweight, high-strength, and flexible shaping characteristics. Suspended GRC features in particular must satisfy both the ultimate expression of architectural aesthetics and absolute structural safety. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide professional solutions for designers and owners from two aspects: the core points of load-bearing calculation and the application of key technologies.

I. Core Dimensions of Load-Bearing Calculation for Suspended GRC Features

The load-bearing calculation of suspended GRC features must be established on the dual foundation of material properties and structural mechanics. First, the dead weight parameters of GRC components must be clarified; typically, their dry density is controlled at 1800-2000kg/m³, over 60% lighter than traditional stone, but the dead weight load still needs to be accurately calculated in combination with design complexity (such as perforation rate and surface curvature). Second, wind loads and seismic action are key variables; based on the basic wind pressure value at the building's location (e.g., coastal areas often adopt values above 0.55kN/m²) and the seismic fortification intensity, finite element analysis software should be used to simulate the stress distribution under dynamic loads, ensuring the maximum deflection does not exceed 1/200 of the component span. In addition, the force analysis of connection joints is particularly important. During the detailed design stage, Qinglong Group performs pull-out resistance and shear resistance verification for the connections between embedded parts, keels, and GRC panels. In accordance with the requirements of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), the safety factor of the load-bearing capacity at each anchorage point is ensured to be no less than 2.5.

II. Key Technological Breakthroughs in Suspended GRC Construction and Installation

From drawing deepening to on-site installation, Qinglong Group ensures the safe implementation of suspended GRC features through full-process technical control. In the material production stage, high-precision molds and automated spraying processes are adopted to ensure the uniformity of fiber distribution in GRC components (fiber volume content ≥4%) and a stable flexural strength above 15MPa. For large-span suspended features, BIM + 3D scanning technology is innovatively applied to simulate installation paths in a virtual environment in advance, keeping on-site errors within ±3mm. During the installation stage, a “staged hoisting” process is adopted: the main keel steel structure is fixed first, then GRC panels are installed through adjustable connectors, while laser line projectors are used simultaneously to calibrate flatness and verticality. For suspension systems exceeding 50m in height, additional vibration-damping buffer devices are installed to absorb the stresses caused by minor structural deformation—a technology that has already been validated in projects such as the Nanjing East Road Century Plaza renovation.

III. Full Life-Cycle Safety Assurance System

The safety of suspended GRC features depends not only on technical control during the construction stage, but also on the establishment of a long-term maintenance mechanism. Qinglong Group provides full-chain services from detailed design to after-sales maintenance: embedded RFID chips enable the traceability of component identity, and regular ultrasonic flaw detection checks the integrity of internal structures; customized protection solutions are provided for different climate zones, such as freeze-resistant GRC formulations (withstanding ≥300 freeze-thaw cycles) in severe cold northern regions and additional surface hydrophobic treatment in humid coastal environments. As a National High-Tech Enterprise and a participant in the formulation of GRC industry standards, Qinglong Group has always taken “Creating Aesthetic Architecture” as its mission, deeply integrating structural safety with aesthetic expression, and providing landmark buildings with suspended GRC system solutions that combine artistic value with technical assurance.