Truss Beam Primary Steel Frame Large Span Structural System High Strength

Product Specification

Product Description
A Truss Beam Primary Steel Frame is a high-efficiency, large-span structural system featuring truss-type main beams, engineered to optimize load-bearing capacity, reduce self-weight, and maximize spatial flexibility. Manufactured with Q355B/Q460 high-strength steel (truss chords, web members) and Q355B connection plates, this product adopts a triangular truss structure—composed of upper/lower chords (I-beam or box-section, 200×100mm-500×250mm) and diagonal/vertical web members (angle steel, circular pipe, or channel steel, 80×80mm-200×200mm)—to efficiently distribute vertical loads (dead load + live load) and lateral forces (wind, seismic action). The truss design ensures yield strength ≥345MPa, lateral stiffness ≥1.5×10⁵ kN/m, and vertical deflection limited to ≤L/600 (L=span length), while reducing self-weight by 30-40% compared to solid I-beam frames. Key features include factory prefabrication rate ≥95% (dimension error ≤±0.8mm) for precise assembly, bolted or welded truss joints reinforced by stiffeners to prevent local buckling, and compatibility with large-span structures (30m-80m). The surface is treated with hot-dip galvanizing, fluorocarbon coating, or weathering steel finish, providing salt spray resistance ≥1200 hours and adapting to indoor, outdoor, and industrial environments. It complies with GB 50017-2017 and AISC 360 structural standards, supporting customization of truss spacing (3m-8m), web configuration (triangular, Warren, or Pratt truss), and load-bearing capacity (up to 5kN/m²). Professional services include finite element analysis (FEA) for truss optimization, BIM-based design integration, on-site installation supervision, and load-bearing capacity testing.

Applications
Truss Beam Primary Steel Frames are ideal for large-span buildings requiring lightweight, high-strength structural solutions, widely used in industrial, public, and commercial projects. Certified by GB 50017-2017, AISC 360, and ISO 9001, they meet international large-span structural standards. Typical applications include public buildings (stadiums, exhibition halls, airport terminals, concert halls), industrial facilities (large-span workshops, aircraft hangars, logistics warehouses), transportation infrastructure (railway stations, bus terminals with overhead truss roofs), and cultural buildings (museums, theaters with column-free spaces). They are particularly essential for projects with span requirements exceeding 30m, where traditional solid beams would be overly heavy or costly. The system’s lightweight design also makes it suitable for roof structures, canopies, and temporary large-span facilities (e.g., event venues). The minimum order quantity is 1 set (customized per project), with full tailoring based on span size, load conditions, and architectural design. Competitive project-based pricing and flexible delivery terms (25-50 workdays based on complexity) support large-scale construction schedules, while a monthly supply capacity of 30 project sets ensures timely delivery. Customization options include corrosion-resistant upgrades (316L stainless steel, super duplex stainless steel) for coastal or industrial environments, fire-resistant coating (fire resistance ≥2 hours) for public buildings, and ultra-high-strength Q690 steel for super-large spans (≥60m) to further reduce truss size and weight.