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

In the field of architectural decoration, GRC panels have become the ideal choice for exterior wall decoration of numerous landmark buildings thanks to their lightweight, high strength and rich molding possibilities. However, the setup of temporary supports during installation is often the key link that determines construction quality and safety. As an industry leader 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 develop a scientific and systematic technical solution for temporary supports of GRC panels, providing professional reference for designers and construction teams.

Core Functions and Design Principles of Temporary Supports for GRC Panels

The temporary support system for GRC panels performs three functions during the construction stage: structural load-bearing, position calibration and stress release. Based on the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong's technical team proposes the "dynamic stability" design principle: the support structure must simultaneously meet the requirements of strength (anti-overturning coefficient ≥1.5), rigidity (deflection controlled within ≤L/200) and adjustability (three-dimensional adjustment accuracy of ±2mm). Taking a commercial complex project in Nanjing as an example, the aluminum alloy adjustable support system used for its double-curved GRC curtain wall, together with BIM pre-assembly technology, achieved precise positioning of more than 3,000 irregular-shaped panels, with installation errors kept within 5mm.

Type Selection and Layout Standards for Temporary Supports

For different installation scenarios, Qinglong has established tiered support solutions: for conventional flat panel installation, a combination of "full-frame scaffolding + adjustable top jacks" is adopted, with upright pole spacing strictly controlled at 1.2m×1.2m and bottom sweep bars set no higher than 200mm; for cantilevered GRC components, an innovative "triangular truss + diagonal cable" composite support is applied, with anchor point load values determined through finite element simulation to ensure that the load on each support node does not exceed 80% of the design value. In the Guangzhou Opera House project, this technology successfully solved the installation challenge of GRC decorative cornices with a cantilever length of 3.5m; third-party testing showed that the maximum settlement of the support system was only 1.2mm.

Key Construction Points and Quality Control

Temporary support construction must strictly follow the "whole before parts" process: first, level the structural substrate and recheck the setting-out lines, using 3D laser scanning technology to obtain the actual coordinates of the substrate; structural correction is required when the deviation from the design model exceeds 10mm. During support installation, the "three-level inspection system" is implemented, focusing on checking the anti-slip coefficient of node connectors (required to be ≥0.45) and support spacing errors (allowable deviation ±50mm). After the GRC panels are fixed, the support system must be retained for more than 72 hours; only after the structural adhesive has fully cured and the deadweight load of the panels is stably transferred can unloading be carried out in stages in the order of "from the middle to both sides, top first and bottom later". Qinglong's independently developed intelligent support monitoring system collects load variation data in real time and automatically raises an alarm when monitored values exceed the warning threshold, effectively preventing sudden instability accidents.

Industry Experience and Innovative Applications

As a member of the International GRC Association, Qinglong has participated in compiling a number of industry standards and has developed unique advantages in temporary support technology: it has developed modular support components that save 40% of materials and shorten the construction period by 30% compared with traditional scaffolding, and has innovatively applied biodegradable composite material supports to solve corrosion problems in special environments such as seaside locations. These technical achievements have been successfully applied in overseas projects such as the Petronas Twin Towers in Malaysia and the renovation of the Sydney Opera House in Australia. It is worth noting that temporary support design must match the mechanical properties of the GRC panels themselves: for high-strength GRC panels with flexural strength above 20MPa, the support density can be appropriately optimized, while components with complex curved shapes require denser support points to ensure uniform load transfer.

As the "invisible skeleton" of GRC panel installation, the technical level of the temporary support system directly reflects an enterprise's full-chain service capability. Relying on 28 years of accumulated engineering practice, Qinglong Group deeply integrates material properties, structural mechanics and construction techniques, and provides customized, safe and reliable solutions for each project through standardized support systems and digitalized construction management. In the future, with the wider application of UHPC/GRC composite panels, temporary support technology will develop in the direction of lightweight and intelligent solutions. Qinglong will continue to promote industry technological upgrading and provide a more solid technical guarantee for creating aesthetically beautiful architecture.