Key Design Points and Critical Technology Analysis of Lifting Plans for Large-Scale UHPC Artistic Forms

Key Design Points and Critical Technology Analysis of Hoisting Solutions for Large-Scale UHPC Artistic Shapes

Driven by the dual forces of contemporary architectural aesthetics and engineering technology, ultra-high performance concrete (UHPC) has become the core material for the artistic expression of landmark building envelopes, thanks to its outstanding mechanical properties and formability. However, when UHPC components break through conventional size and form limitations, their hoisting elevates from simple structural construction into a systematic engineering endeavor integrating material characteristics, structural safety, and artistic precision. As an industry leader with 28 years of experience in detailed design and construction of UHPC/GRC/GRG/GRP materials, Qinglong Group draws on the practice of hundreds of large-scale projects to deeply analyze the technical core of hoisting solutions for artistic UHPC shapes, providing designers and owners with a full-chain solution from theory to practice.

I. The Uniqueness of UHPC Artistic Shape Hoisting and the Logic of Solution Design

Compared with traditional precast components, hoisting artistic UHPC shapes faces three core challenges: first, the irregularity of component forms leads to complex force models—for example, the center-of-gravity calculation for hyperbolic skins and openwork relief components must incorporate 3D scanning data; second, material characteristics impose special requirements on hoisting techniques—although UHPC can achieve a compressive strength above 150MPa, thin-walled components are prone to stress concentration at lifting point locations; third, precision control of artistic effects—millimeter-level installation errors may distort the overall shape. In the translucent concrete project at Century Plaza on Nanjing East Road, Qinglong Group innovatively adopted BIM + finite element analysis technology, simulating the entire hoisting process through a 1:1 digital twin, controlling cumulative error within 3mm, and successfully achieving seamless assembly of 200 specially shaped UHPC translucent panels.

II. Critical Technical Points: Systematic Integration from Material Characteristics to Construction Methods

1. Lifting Point Optimization Design Technology: Addressing the high elastic modulus of UHPC materials, Qinglong's technical team developed a “distributed multi-point hoisting system,” using Rhino parametric modeling to calculate component stress contours and upgrading traditional 4-point hoisting to 6-8 point dynamic balance hoisting. In the GRC/UHPC composite curtain wall project at the Dongguan Women and Children's Activity Center, this technology reduced the hoisting deformation of 3.8-meter-high specially shaped components by 62%, far exceeding industry standards.

2. Dynamic Stability Control Technology: Taking into account UHPC's self-weight (approximately 24kN/m³) and wind load effects, a “staged hoisting + real-time monitoring” process is adopted. In a cultural center project in Saudi Arabia, the Qinglong team deployed tilt sensors and stress monitoring chips to transmit data in real time during hoisting, achieving component attitude control within 0.5° through a hydraulic fine-tuning system, ensuring the precise installation of the double-curved UHPC cantilevered eave at a height of 32 meters.

3. Modular Installation Technology: To meet the industrialized construction requirements of complex shapes, an innovative “unit-based pre-assembly” method was developed. Large artistic shapes are broken down into standard modules and custom modules, with pre-assembly and structural sealant jointing completed in the factory, and rapid on-site installation achieved through positioning pins and steel connectors. In a landmark project in Malaysia, this technology shortened the installation period of a 1200㎡ UHPC artistic curtain wall by 40% while reducing on-site wet work by 90%.

III. Full-Chain Service Assurance: Closed-Loop Management from Detailed Design to After-Sales Maintenance

As a national high-tech enterprise and a participant in UHPC industry standard-setting, Qinglong Group has established a full-process quality control system covering “design-production-construction-maintenance.” In the detailed design stage, BIM technology is used for hoisting path simulation and clash detection; in production, automated material distribution machines and steam curing processes ensure a 100% strength compliance rate for UHPC components; during construction, a “three-inspection system” of quality control is implemented, with image records retained at key nodes; and the after-sales phase provides 5 years of free structural safety inspection services. This full-chain service capability has made Qinglong a strategic partner of renowned real estate groups such as Poly and China Overseas, with projects covering more than 30 provinces and cities in China as well as Southeast Asian markets.

The hoisting of UHPC artistic shapes is both an ultimate challenge to material performance and a vivid practice of engineering aesthetics. With 28 years of professional experience as its foundation, Qinglong Group transforms “impossible” architectural ideas into achievable engineering works through technological innovation and systematic integration. Looking ahead, as the application scenarios for UHPC materials continue to expand, Qinglong will keep deepening the integrated innovation of material science and construction technology, contributing more solutions where “safety and aesthetics coexist” to the construction industry.