Research and Application Analysis of Anti-Detachment Measures for UHPC Exterior Wall Panels in High-Rise Residential Buildings

**Research and Application Analysis of Anti-Detachment Measures for UHPC Exterior Wall Panels in High-Rise Residential Buildings**

**Safety as the Foundation, Technology as the Guard: Innovative Practices in Anti-Detachment of UHPC Exterior Wall Panels**

As modern architecture develops toward greater heights and artistic expression, ultra-high performance concrete (UHPC), with its lightweight high strength and excellent durability, has become the ideal choice for exterior wall decoration in high-rise residential buildings. However, the risk of exterior wall panel detachment remains a major challenge to building safety. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group, supported by full-chain technical strength—from material R&D and design development to construction and installation—has built a systematic anti-detachment solution for UHPC exterior wall panels, safeguarding the safety of high-rise residential buildings.

**I. Material Innovation: Optimizing and Upgrading UHPC Substrate Performance**

The core of anti-detachment lies in the physical properties of the material itself. Relying on its provincial-level R&D center and 58 patented technologies, Qinglong Group has raised the flexural strength of UHPC exterior wall panels to over 20MPa and the elastic modulus to 40GPa by adjusting steel fiber content and optimizing mix design, fundamentally reducing the risk of cracking and detachment caused by material brittleness. Meanwhile, to address temperature differences in high-rise environments, the R&D team has kept the panel linear shrinkage rate within 0.03% by incorporating nano-scale mineral admixtures, reducing deformation and cracking caused by thermal stress. In addition, Qinglong UHPC exterior wall panels show no performance degradation after 1000 freeze-thaw cycle tests, with weather resistance indicators far exceeding industry standards, providing material assurance for long-term anti-detachment performance.

**II. Structural Design: Dual Assurance of Mechanical Models and Connection Systems**

Scientific structural design is a key link in anti-detachment. Qinglong Group uses BIM technology and parametric design software to establish mechanical models of UHPC exterior wall panels under high-rise wind pressure loads, precisely calculating the load distribution on different floors. For the connection system, it has innovatively developed a combined solution of "detachable stainless steel hangers + elastic rubber pads": the hangers are made of 316 stainless steel, with corrosion resistance 3 times that of traditional carbon steel; the elastic rubber pads absorb dynamic loads generated by earthquakes and wind pressure, avoiding stress concentration caused by rigid connections. The system has been verified by 150,000 fatigue tests, ensuring the stability of connection nodes throughout the building's entire life cycle.

**III. Construction Control: Refined Management with Full-Process Quality Traceability**

Quality control during construction directly affects anti-detachment performance. Qinglong Group implements a "factory prefabrication + on-site assembly" model, achieving standardized production of exterior wall panels at its production base in Nanning, Guangxi, with automated production lines ensuring dimensional accuracy errors ≤2mm. On-site installation adopts 3D laser scanning positioning technology, combined with customized adjustable supports, to achieve millimeter-level installation precision. Each panel is embedded with an RFID chip that records full life-cycle data such as material performance, production batch, and installation time, forming a traceable quality control system. In addition, dedicated hoisting equipment and anti-fall tooling have been developed for high-altitude work, ensuring a safe and controllable construction process.

**IV. Industry Practice: Benchmark Cases from Standard Setting to Project Implementation**

As a unit with outstanding contributions to the formulation of the industry standard for "Ultra-High Performance Concrete (UHPC) Exterior Wall Panels," Qinglong Group has widely applied its anti-detachment technology achievements in actual projects. In a 33-story residential project, by adopting "UHPC composite insulation integrated panels + seismic hanger system," the weight of each panel was successfully controlled within 50kg, a 60% weight reduction compared to traditional stone curtain walls, while meeting the seismic fortification requirement of intensity 9. In the 5 years since project delivery, evaluation by third-party testing agencies has shown that the exterior wall panels have no deformation or cracking, with wind pressure resistance maintained at its initial state, making it a model of safe UHPC exterior wall application in high-rise residential buildings.

**Conclusion: Building the Safety Bottom Line of Architecture through Technological Innovation**

The safety of high-rise residential exterior walls concerns public well-being, and anti-detachment technology for UHPC materials is an important topic in industry development. With 28 years of full-chain experience, Qinglong Group has built systematic solutions covering materials, design, construction, and operation and maintenance, not only promoting the safe application of UHPC in the construction field, but also setting a dual benchmark of safety and quality for the new decorative building materials industry under its mission of "creating beautiful architecture." In the future, Qinglong will continue to deepen its technological innovation in UHPC/GRC/GRG/GRP materials, contributing Chinese wisdom to global building safety.