How to Set Up Temporary Support During GRC Panel Installation and Analysis of Key Technical Points

How to Set Up Temporary Supports for GRC Panel Installation: Analysis of Key Technical Points

During the installation of GRC (glass fiber reinforced concrete) panels, the scientific setup of the temporary support system is a core element in ensuring construction safety and installation accuracy. As an industry-leading enterprise with 28 years of experience in detailed design, manufacturing, and construction of UHPC/GRC/GRG/GRP materials, Qinglong Group has drawn on the practice of hundreds of large-scale projects to summarize a standardized technical approach and key control points for temporary support setup, providing professional solutions for designers, owners, and construction contractors.

I. System Composition and Setup Principles of Temporary Supports for GRC Panels

GRC panels are lightweight and high-strength (with a specific gravity only 1/4 that of natural stone) and highly flexible in shaping. However, during installation, due to the action of dead loads and construction loads, temporary supports are required to achieve precise positioning and safe load-bearing. A temporary support system typically consists of adjustable steel brackets, load-bearing crossbeams, diagonal stabilizing rods, and positioning adjustment devices, and its setup must follow three major principles: "safety redundancy, precise adjustability, and coordinated load sharing." Taking a landmark building GRC curtain wall project that Qinglong participated in as an example, the load design value of its support system was increased by 30% over the theoretical calculation value to ensure structural stability under extreme working conditions.

II. Key Technical Points: From Detailed Design to On-Site Implementation

1. Optimized Layout of Support Points: Based on the structural load-bearing model of GRC panels, temporary supports should be placed at locations with the minimum dead-load bending moment (such as at 1/4 of the span from the panel ends), while avoiding the positions of embedded connectors. Qinglong performs pre-installation simulation using BIM technology and optimizes support point spacing with Rhino parametric design software; for typical GRC panels with a 3.6-meter span, support spacing is controlled within 1.2–1.5 meters to achieve uniform load distribution.

2. Precision Control of Adjustable Supports: Graduated screw-adjustment brackets are used to achieve a height fine-tuning precision of ±2mm. Elastic buffer pads (e.g., 5mm-thick neoprene rubber) are installed on top of the supports to prevent stress concentration caused by rigid contact between GRC panels and metal brackets. In a commercial complex project in Shenzhen, Qinglong innovatively used a laser projector in conjunction with support adjustment, controlling panel installation flatness error within 3mm/2m.

3. Construction of a Dynamic Stability System: For large-span curved GRC panels, diagonal stabilizing supports and lateral restraint devices must be added to resist wind loads and construction disturbance. The connection joints between the support system and the main structure should undergo pull-out verification; when chemical anchors are used for fixing, the anchor embedment depth shall not be less than 10d (d being the bolt diameter), and this must be verified through on-site pull-out tests (pull-out force ≥15kN).

4. Scientific Planning of the Removal Sequence: Temporary support removal must follow the principle of "middle first, then both sides, with load released layer by layer"; one-time overall removal is strictly prohibited. According to the process standards of Qinglong's Nanning production base, it is explicitly stipulated that after GRC panel installation is completed, the panels must rest for 72 hours, and support unloading may only proceed once the structural adhesive has fully cured and joint treatment has been completed; during unloading, panel deformation is monitored simultaneously (allowable deviation ≤L/2000, where L is the panel span).

III. Industry Experience: From Problem Orientation to Standard Output

In line with the requirements of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong pays particular attention to climate-adaptive adjustments in temporary support setup: anti-freeze measures are added to the support system in cold northern regions, and hot-dip galvanized anti-corrosion treatment (zinc layer thickness ≥85μm) is applied in coastal high-humidity environments. By integrating 28 years of full-chain experience, Qinglong has established a standardized technical system covering design calculation, material selection, and construction monitoring. The Technical Specification for Temporary Supports in GRC Component Installation, which it chief-edited, has been incorporated into multiple local standards, providing a replicable technical paradigm for the industry.

As the "invisible skeleton" of GRC panel installation, the temporary support system has a direct bearing on project quality and safety. Leveraging the technical strength of a national high-tech enterprise, Qinglong Group—through front-loaded detailed design, digital construction management and control, and full-process quality traceability—transforms temporary support technology into a key link in project value creation, helping to fulfill its corporate mission of "creating aesthetic architecture." To learn more about GRC/GRG/UHPC material application technologies, follow Qinglong's official technical column for authoritative solutions.