Analysis of Key Influencing Factors and Optimization Strategies for Super-Large GRC Shape Hoisting Plans

Hoisting of Super-Large GRC Shapes: The Dual Challenge of Safety and Efficiency and Qinglong's Solutions

At the intersection of contemporary architectural aesthetics and engineering technology, super-large GRC (glass fiber reinforced concrete) shapes have become a key choice for landmark building envelope design thanks to their light weight, high strength, and flexible formability. However, hoisting such components is like "building blocks in the air," testing both the limits of material performance and the wisdom of engineering management. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has successfully solved hoisting challenges in hundreds of large-scale projects through integrated services spanning detailed design, manufacturing, and construction installation. This article systematically analyzes the core factors affecting the hoisting of super-large GRC shapes and proposes optimization paths based on Qinglong's engineering practice.

I. Analysis of Key Factors Affecting the Hoisting of Super-Large GRC

Super-large GRC components typically refer to irregular decorative pieces weighing over 500 kg per unit and measuring more than 6 meters, and their hoisting process is affected by the coupling of multiple factors. In terms of material physical properties, the weight-to-strength ratio of GRC directly determines the hoisting plan—the GRC components produced by Qinglong achieve flexural strength above 20 MPa through precisely proportioned glass fiber content (typically 5-8%), reducing weight by 40% compared with traditional concrete and laying the foundation for lighter hoisting. In structural design, hoisting point placement must undergo BIM simulation and structural mechanics verification. In a cultural center project, Qinglong's technical team optimized the originally designed 8 hoisting points down to 4 through parametric design, reducing stress concentration in the components while improving installation efficiency.

External environmental factors are equally significant. When winds exceed force 6, a GRC curtain wall panel of up to 10 ㎡ generates substantial wind loads that may destabilize the hoisting posture. The wind tunnel laboratory established at Qinglong's Nanning production base can simulate component loading under force-12 typhoon conditions, providing data support for projects in coastal areas. In addition, issues such as on-site hoisting space constraints, avoidance of existing building obstacles, and nighttime construction lighting all require 3D scanning and path planning at the scheme stage.

II. Qinglong's Full-Chain Optimization Strategy: Closed-Loop Management from Design to Maintenance

To address the complexity of super-large GRC hoisting, Qinglong has built a four-dimensional optimization system of "design-production-construction-monitoring." In the detailed design phase, the Rhino+Grasshopper parametric platform is used for hoisting simulation to detect component interference issues in advance. In an exhibition center project, optimizing the hoisting sequence through the BIM model shortened the originally planned 15-day hoisting schedule to 10 days. In manufacturing, Qinglong introduced automated mold production lines to keep component dimensional tolerances within ±2 mm, laying the foundation for precise alignment.

Innovation in the construction and installation phase is particularly critical. Qinglong's self-developed "modular hoisting fixtures" enable three-dimensional fine adjustment of components through adjustable connection nodes; combined with 3D laser positioning technology, installation accuracy reaches ±3 mm. In a commercial complex project in Guangzhou, this technology successfully solved the splicing challenge of double-curved GRC curtain walls and passed acceptance on the first attempt. Notably, Qinglong's "hoisting emergency plan library" contains response procedures for 23 emergency scenarios, such as in-air rotation control of components and temporary anchoring schemes, which effectively handled a sudden rainstorm in a project in Shenzhen.

III. Industry Trends and Insights from Qinglong's Practice

With the development of super high-rise and irregular buildings, GRC hoisting is evolving toward intelligence and digitalization. The Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), which Qinglong participated in formulating, added a dedicated chapter on "Hoisting of Large Components," standardizing technical requirements such as lifting appliance selection and load calculation. The company's recently developed UHPC-GRC composite components raise compressive strength to 150 MPa, offering a superior material choice for super-large shapes.

From the butterfly-shaped GRC roof of the Nanning ASEAN Cultural Plaza to the curved curtain wall of an airport in Saudi Arabia, Qinglong has developed a mature solution for super-large GRC hoisting through 28 years of technical accumulation. This not only embodies the corporate mission of "creating beautiful architecture" but also confirms the unique value of the "full-chain service" model in complex projects. In the future, with the deep integration of BIM+GIS technology, GRC hoisting will make the leap from "experience-driven" to "data-driven," offering more possibilities for balancing building envelope artistry with engineering safety.