Q460 Q690 High Strength Steel Bracing Frame For High Rise And Super Tall

Product Specification

Product Description
A High-Rise Steel Bracing Frame is a high-performance core structural system engineered specifically for tall and super-tall buildings (height ≥80m), integrating lateral load resistance, seismic energy dissipation, and structural stability enhancement. Manufactured with Q460/Q690 ultra-high-strength steel (bracing members) and Q355B high-strength steel (connection nodes), this product features an optimized dual-core or perimeter bracing design that efficiently resists wind loads (up to 0.8kN/m²) and seismic forces (seismic intensity zones 7-9 degrees), limiting structural lateral displacement to ≤H/800 (H=building height) and inter-story drift to ≤1/500, fully complying with GB 50011 and AISC 341 anti-seismic standards. The bracing members adopt box-section or H-shaped cross-sections (customizable from 300×300mm to 800×800mm) and fatigue resistance under cyclic dynamic loads. Connection nodes utilize hybrid bolt-welded joints with 12.9-grade high-strength bolts and full-penetration welds, reinforced by internal stiffeners to prevent local buckling, while factory prefabrication rate ≥95% guarantees component precision (dimension error ≤±0.8mm) and reduces on-site construction time by 60% compared to traditional methods. The surface is treated with cathodic electrophoresis + fluorocarbon coating (dry film thickness ≥120μm) or hot-dip galvanizing, providing salt spray resistance ≥1500 hours and adapting to urban high-rise environments (pollution, humidity, wind erosion). Key features include energy-dissipating components (viscous dampers, buckling-restrained braces) integrated into the frame to absorb seismic energy, lightweight design (30% lighter than concrete shear walls) to reduce foundation load, and compatibility with BIM-based modular construction. It supports customization of bracing configurations (diagonal, chevron, cross, or eccentric bracing) and cross-section optimization via finite element analysis (FEA) to balance stiffness, ductility, and cost. Professional services include seismic performance simulation, wind tunnel testing, on-site installation supervision, and post-construction health monitoring, ensuring the frame meets the strict safety, durability, and efficiency requirements of high-rise and super-tall buildings.

Applications
High-Rise Steel Bracing Frames are critical core structural solutions for tall and super-tall buildings, trusted for their ability to balance safety, efficiency, and space optimization. Certified by GB 50017, AISC 360, and ISO 9001, they meet international high-rise structural standards, making them a preferred choice for landmark skyscrapers and urban high-rise developments. These frames are widely used in super-tall office towers (height ≥150m), luxury residential skyscrapers, mixed-use high-rises (commercial + residential + office), high-rise hotels and serviced apartments, and urban transit hubs (high-rise railway stations, airport terminals with elevated structures). They are particularly essential for high-rises in high-wind coastal cities (e.g., Shanghai, Shenzhen) and high-seismic zones, where lateral load resistance and seismic performance are paramount. The system’s space-saving design (occupies only 3-5% of floor area, compared to 8-12% for concrete shear walls) maximizes usable floor space, enhancing the economic value of high-rise projects. The minimum order quantity is 1 set (customized per project), with full tailoring based on building height, wind speed, seismic intensity, and architectural layout. Competitive project-based pricing and flexible delivery terms (25-50 workdays based on complexity) support super-tall building construction schedules, while a monthly supply capacity of 60 project sets ensures timely delivery. Customization options include integration of buckling-restrained braces (BRBs) for enhanced seismic energy dissipation, corrosion-resistant upgrades (316L stainless steel, weathering steel) for coastal high-rises, fire-resistant coating (fire resistance ≥2.5 hours) for fire-critical floors, and ultra-high-strength Q960 steel for super-tall buildings (height ≥300m) to reduce structural weight. Whether it's for new super-tall building core structure design or high-rise retrofitting (seismic reinforcement, lateral stiffness enhancement), the High-Rise Steel Bracing Frame delivers safe, efficient, and high-value structural performance.