Key Influencing Factors and Optimization Strategies for the Hoisting Plan of Super-Large GRC Shaped Components

Millimeter-Level Lifting Precision Control: The Key to Safe Installation of Super-Large GRC Features

In the field of contemporary building curtain walls, super-large GRC (Glass Fiber Reinforced Concrete) features have become the crowning touch of landmark buildings with their unique artistic expressiveness and structural advantages. However, the weight of these components—often dozens of tons—their complex curved forms, and the stringent demands of high-altitude installation make hoisting the decisive factor in a project's success or failure. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the decisive impact of hoisting plans on project safety, cost, and schedule. This article systematically analyzes the core factors influencing the hoisting of super-large GRC features and proposes optimization strategies based on engineering practice.

1. Analysis of Key Factors Influencing the Hoisting of Super-Large GRC Features

The hoisting of super-large GRC components is like an "aerial jigsaw puzzle," requiring a balance of mechanical equilibrium, precision control, and environmental adaptability. The primary factor is the characteristics of the components themselves—although GRC materials offer the advantage of being lightweight yet strong (weighing only 1/4 of traditional stone), super-large components (such as irregular curtain wall units over 6 meters high) still face challenges of insufficient rigidity, and stress concentration during hoisting may cause cracking. Second, the selection of hoisting equipment directly affects operational efficiency and safety; suitable crane models and lifting apparatus must be matched to the component weight, installation height, and site conditions—for example, crawler cranes combined with hydraulic lifting systems are required on confined sites. Moreover, environmental factors cannot be ignored: strong winds and temperature differences all affect hoisting precision. At one coastal project, hoisting was suspended when instantaneous winds exceeded force 6, delaying the schedule by 3 days.

2. Optimization Paths for Hoisting Plans from a Full-Chain Perspective

Based on its full-chain advantages spanning "detailed design–manufacturing–construction and installation," Qinglong Group has established a hoisting optimization system of "pre-control + dynamic adjustment." In the design phase, BIM technology simulates hoisting paths to avoid in advance the risk of collisions between components and the main structure, while parametric design optimizes lifting point layouts to ensure uniform loading. In production, the concept of modular prefabrication is introduced, decomposing super-large components into joinable units—for example, one convention center project split a 30-meter-long curved GRC cornice into 6 modules, reducing the weight of each lift to within 15 tons. In the construction and installation phase, 3D laser scanning technology achieves millimeter-level positioning, and, together with customized hoisting supports and real-time stress monitoring systems, component installation deviation is kept within ±3mm.

3. Validation Through Industry Practice: From Technological Innovation to Standard Setting

As a participating unit in drafting the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong Group has incorporated hoisting technology innovations into its standardization system. In the renovation project of Century Plaza on Nanjing East Road, its team developed a combined vacuum suction cup and steel cable lifting device to meet the hoisting needs of light-transmitting GRC components, avoiding the surface damage caused by traditional hoisting while improving installation efficiency. This technology won the Silver Award in the AALBORG WHITE Cup First UHPC Construction Engineering Innovation Awards. In addition, the hoisting emergency plan system established by Qinglong, through 1:1 simulated hoisting tests and extreme weather response plans, has successfully ensured the safe installation of more than 300 large GRC projects in China, including award-winning projects such as the Dongguan Women and Children's Activity Center.

The hoisting of super-large GRC features is by no means an isolated construction step, but a systematic integration of material properties, engineering design, and on-site management. With 28 years of industry experience as its foundation, Qinglong Group runs hoisting risk control throughout the entire project lifecycle through technological innovation and full-chain service capabilities, providing a solid guarantee for designers to realize their creative visions. Going forward, as UHPC/GRC composite materials see wider application in the construction field, specialized and refined hoisting solutions will become a key indicator for measuring a company's core competitiveness, driving the industry toward higher standards.