Research on Fiber Orientation Optimization Strategies and Mechanical Property Enhancement for Double-Curved UHPC Forms

Research on Fiber Orientation Optimization Strategies and Mechanical Performance Enhancement for Double-Curved UHPC Forms

Driven by the dual demands of contemporary architectural aesthetics and structural safety, ultra-high performance concrete (UHPC) has become the ideal material for shaping complex architectural forms such as double-curved surfaces, thanks to its outstanding mechanical properties and design freedom. However, controlling fiber orientation in double-curved components has long been a technical challenge in the industry, directly affecting structural load-bearing capacity and durability. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has accumulated systematic solutions for fiber orientation optimization and performance enhancement through full-chain technological innovation.

Fiber Orientation Challenges and Optimization Paths for Double-Curved UHPC

Due to their complex geometry, double-curved UHPC components are prone to uneven fiber distribution and disordered orientation under traditional casting processes, which in turn leads to stress concentration and cracking risks. Through parametric simulation and physical experiments, Qinglong's technical team established a coupled analysis model of "flow field–fiber trajectory–mechanical response." In the Dongguan Women and Children's Activity Center project, the company's independently developed fiber-oriented distribution system, combined with vacuum-assisted forming technology, increased the fiber orientation rate of double-curved components by 40% and pushed flexural strength beyond 20MPa, reaching an industry-leading level.

Full-Chain Technological Innovation for Material Performance Enhancement

As a National High-Tech Enterprise, Qinglong Group has established a full-process quality control system covering everything from material formulation to construction and installation. In material R&D, nano-calcium carbonate modification and steel fiber surface treatment technologies have increased fiber-matrix interfacial bond strength by 35%; in the manufacturing stage, BIM + 3D scanning technology ensures mold precision for double-curved surfaces within ±0.5mm; in the installation stage, modular hoisting and stress monitoring systems were innovatively adopted—in the Nanjing Road Century Plaza renovation project, installation error for translucent double-curved UHPC panels was only 0.3mm, perfectly realizing the design intent.

Performance Verification and Application Breakthroughs in Engineering Practice

Qinglong Group participated in formulating the industry standard General Technical Conditions for Non-Load-Bearing Ultra-High Performance Concrete (UHPC) Components, and its double-curved UHPC technology has been successfully applied to more than 300 landmark projects at home and abroad. In an international airport project in Saudi Arabia, UHPC double-curved curtain wall panels using fiber orientation optimization technology withstood 70℃ high temperatures and intense UV exposure, with a performance degradation rate below 5% over 20 years. This achievement confirms Qinglong's technical strength in UHPC applications under extreme environments and sets a new industry benchmark for the safety and durability of double-curved forms.

From breakthroughs in materials science to innovations in engineering technology, Qinglong Group has always taken "creating aesthetically beautiful architecture" as its mission, transforming core technologies such as fiber orientation optimization into key solutions for resolving the conflict between complex forms and structural safety. In the future, with the deep integration of technologies such as 3D printing and AI simulation, performance enhancement for UHPC double-curved components will move toward even broader horizons, offering infinite possibilities for architectural creation.