How Should Temporary Supports Be Set Up When Installing GRC Panels? Key Setup Points and Specification Requirements Explained

Safety as the Foundation, Quality as the Guarantee: 6 Core Points for Temporary Supports in GRC Panel Installation

In the construction of GRC (Glass Fiber Reinforced Concrete) curtain walls and decorative components, the temporary support system acts as an invisible "safety guardian," and the scientific nature of its setup directly affects component installation precision, structural stability, and construction safety. As an industry player with 28 years of experience in GRC detailed design and construction, Qinglong Group fully understands the critical role of temporary supports in engineering practice—they serve not only as the "reference coordinates" for component positioning but also as the "first line of defense" against construction risks. Based on the requirements of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), this article systematically analyzes the setup logic and practical key points of temporary supports for GRC panel installation.

Underlying Logic of Temporary Supports for GRC Panels: Load Transfer and Stability Control

As typical lightweight, high-strength composite components, GRC panels go through the key stages of "temporary fixing—adjustment and calibration—permanent anchoring" during installation. The core function of temporary supports lies in using an adjustable mechanical support system to counteract the overturning moments generated by component self-weight (typically 15-20 kg/㎡ for GRC panels), construction live loads, and wind loads, while providing a stable reference for three-dimensional coordinate adjustments. Qinglong's standardized construction manual at its Nanning production base specifically emphasizes that the support system design must satisfy the "dual safety factor" principle: a load-bearing capacity safety factor of no less than 1.5 and a stability safety factor of no less than 2.0, to ensure structural safety under extreme conditions.

Support Point Placement: Scientific Layout Based on Component Characteristics

GRC components with different shapes require differentiated support point designs. For flat GRC panels, the "four-point symmetric support" principle should be followed, with support point spacing not exceeding 1.2m and the distance from panel edges no greater than 300mm, to avoid excessive bending moments. For curved or specially shaped GRC components (such as hyperbolic curtain wall units), Qinglong uses BIM technology for pre-assembly simulation, identifies stress concentration areas through finite element analysis, and sets up composite support points combining "rigid support + elastic buffering," which ensures positioning precision (error ≤2mm) while preventing stress damage. It is worth noting that support points must avoid the embedded parts areas of GRC panels to prevent mechanical interference between anchors and the support system.

Support Structure Selection: Comprehensive Consideration from Materials to Craftsmanship

The selection of temporary support materials must balance strength and adjustment convenience. For large projects, Qinglong prioritizes Q235B structural steel for the main support framework, combined with M20 high-strength bolt connections to ensure overall rigidity; for fine-tuning mechanisms, telescopic adjustment rods with locking functions are selected to achieve precise elevation control within a ±50mm range. In humid or corrosive environments, support components require hot-dip galvanizing (zinc layer thickness ≥85μm)—a detail that has extended the service life of support systems in Qinglong's overseas projects (such as a commercial complex in Malaysia) to more than 18 months.

Dynamic Monitoring and Synchronized Adjustment: Technological Empowerment for Digital Construction

Modern GRC installation has entered the era of "real-time monitoring." Qinglong's construction team is equipped with Leica TS60 total stations for real-time three-dimensional coordinate acquisition, and the installation of each GRC panel requires at least 3 data verifications to ensure planar position deviation ≤3mm and verticality deviation ≤1/1000. In a cultural center project in Guangzhou, real-time comparison between the BIM model and on-site monitoring data successfully resolved the cumulative error issue of large-span GRC sunshades, bringing overall installation precision to millimeter-level standards. The removal sequence of the support system is equally critical and must follow the principle of "last installed, first removed, with symmetric unloading" to prevent component deformation caused by stress release.

Industry Comparison and Qinglong's Experience: From Compliance to Excellence

Compared with common simplified support practices in the industry, Qinglong's full-process control system demonstrates significant advantages: in the Dongguan Women and Children's Activity Center project, a combined support solution of "structural steel framework + adjustable diagonal braces" increased the installation efficiency of GRC relief panels by 40% while keeping the rework rate below 0.5%. This practice confirms the value of standardized construction—although temporary supports are "temporary measures" in the construction process, they directly determine the final project quality. As emphasized in the industry standard Qinglong helped formulate, safety control of GRC installation should run through the entire life cycle from detailed design to completion and delivery.

As a national high-tech enterprise and a participant in formulating GRC industry standards, Qinglong has always believed that the technical details of temporary support systems are precisely the touchstone for measuring a company's professional capabilities. From material selection to mechanical calculations, from on-site execution to dynamic monitoring, rigorous control of every stage is a vivid practice of the mission of "creating beautiful architecture." In the future, with the widespread application of new materials such as UHPC/GRC/GRG, temporary support technology will develop toward intelligence and modularization, and Qinglong will continue to draw on its 28 years of technical expertise to provide the industry with safer and more efficient construction solutions.