Research on Splicing Precision Control Technology and Practice for Multi-Curved UHPC Shapes

Excellence in Every Millimeter: The Breakthrough Path to Jointing Precision in Multi-Curved UHPC Designs

Driven by the dual forces of contemporary architectural aesthetics and engineering technology, ultra-high performance concrete (UHPC), with its outstanding mechanical properties and design freedom, is becoming the core material for landmark buildings to achieve complex curved designs. However, controlling the on-site jointing precision of multi-curved UHPC components has always been the key challenge that determines a project's success. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has, through full-chain technological innovation and engineering practice, established a precision control system covering everything from detailed design to construction and installation, providing solid assurance for the perfect realization of complex building skins.

Precision Pain Points of Multi-Curved UHPC Designs: Full-Chain Challenges from Design to Delivery

Precision control in the jointing of multi-curved UHPC designs is essentially a comprehensive test of material properties, digital technology, and construction techniques. In the design phase, complex forms such as hyperbolic and twisted surfaces place extremely high demands on parametric modeling precision, and even the slightest dimensional deviation can lead to cumulative errors during on-site installation. In production, control of UHPC material shrinkage and mold machining precision (typically requiring errors ≤0.5mm/m) directly affects the forming quality of components. During construction and installation, environmental interference from work at height and millimeter-level deviations in hoisting and positioning pose even more severe challenges to jointing precision. In a provincial cultural center project, the Qinglong team used BIM simulation to discover that the traditional construction plan carried a cumulative error of 3.2mm, ultimately avoiding rework losses through digital adjustment.

Qinglong's Full-Chain Precision Control Technology: Four Core Breakthroughs Setting the Industry Benchmark

To tackle the precision challenges of multi-curved UHPC designs, Qinglong Group, drawing on the technical resources of its national-level R&D center and provincial engineering technology center, has developed an integrated "design-production-construction" solution. In the detailed design phase, a Rhino+Grasshopper parametric platform is used to achieve surface subdivision and pre-emptive error control, combined with 3D scanning technology to create millimeter-level models of existing structures, ensuring a high degree of alignment between design models and actual site conditions. In the manufacturing phase, industrial-grade five-axis machining equipment is used to produce molds, together with a proprietary UHPC material formulation (flexural strength exceeding 150MPa), keeping component forming errors within ±1mm. During construction and installation, the innovative "3D laser positioning + modular hoisting" process, through real-time monitoring and dynamic adjustment, achieves a precision standard of joint gaps ≤2mm between adjacent components. This technical system has been successfully applied to multiple landmark projects, including the Nanjing East Road Century Plaza renovation project, and won the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award.

Engineering Practice Insights: The Full-Cycle Service Capability Behind Precision Control

Achieving jointing precision in multi-curved UHPC designs is by no means the optimization of a single technical step, but a deep test of a company's full-cycle service capability. As a nationally recognized "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong Group has always emphasized its integrated service advantage of "design-production-construction-maintenance": in the Dongguan Women and Children's Activity Center project, by stationing a technical team on site for 120 days to fully participate in design development and on-site coordination, the team achieved the perfect jointing of a 12,000-square-meter hyperbolic UHPC curtain wall, winning the Silver Award of the GRC Construction Engineering Innovation Award. This "technology + service" model not only solves precision control challenges, but also provides designers and owners with a worry-free, full-process experience from concept to completion.

From millimeter-level mold machining to centimeter-level on-site jointing, precision control of multi-curved UHPC designs is both a contest of technology and an accumulation of experience. Through 28 years of industry dedication, Qinglong Group has embedded its commitment to "meticulousness and the pursuit of excellence" into every project detail. In the future, as technologies such as BIM and AI become deeply integrated, the design potential of UHPC materials will be further unleashed, and Qinglong will continue to leverage innovative technology and full-chain services to safeguard the realization of more architectural aesthetics, fulfilling its corporate mission of "creating beautiful architecture."