I. Core seismic advantages

High ductility energy-absorbing design

Low yield point steel (LY160): yield strength of 160MPa, elongation ≥40%, plastic deformation capacity increased by 60%, can absorb 30%-50% of seismic energy;

Optimization of node ductility: adopting dog-bone weakening (RBS), end-plate strengthened nodes, plastic corner ≥ 0.03rad, ensuring “strong nodes, weak members”.

Multiple lateral force-resisting system

Bracing system: X-type center bracing, eccentric bracing (EBF) or buckling restraint bracing (BRB), with lateral stiffness increased by 40%-60%;

Combined structure: steel truss-concrete shear wall work together to meet the requirements of 9 degree rare earthquake defense.

Intelligent seismic damping technology

Viscous damper integration: force range 500-10,000kN, damping efficiency ≥35%, displacement capacity ±300mm;

Friction Pendulum Support (FPS): friction coefficient 0.03-0.05, horizontal displacement ±500mm, suitable for large-span bridges and connecting corridors.

Rapid Repair Capability

Replaceable energy-consuming elements: BRB support or damper replacement within 72 hours after the earthquake;

Modular design: rapid replacement of standardized segments, reducing repair cost by 80%.

II. Core Product Series and Technical Parameters

III. Key Seismic Technologies

Node and connection technology

High-strength bolt connection: 10.9S grade bolts, preload error ≤±5%, anti-slip coefficient ≥0.45;

Full-penetration weld: K-type bevel welding, UT flaw detection level Ⅰ pass rate ≥ 99.5%.

Structural system innovation

Dual lateral resistance system: the main truss bears the vertical load and the bracing system bears the horizontal seismic force with clear division of labor;

Self-reset design: SMA shape memory alloy tie ropes, post-earthquake residual deformation ≤0.1%.

Dynamic performance optimization

Finite element time course analysis: input seismic waves such as El Centro and Taft to verify the structural integrity under rare earthquakes;

Shaking table test: simulate an earthquake with peak acceleration of 0.6g, no structural collapse (meet GB 50011 specification).

IV. Materials and Manufacturing Processes

Application of special steel

Fire-resistant steel (Q345FR): strength retention of ≥65% at 600°C, ensuring structural safety under fire;

Weathering-resistant steel (Q355NH): salt spray test ≥5,000 hours without red rust, 50 years free of painting and maintenance.

Precision processing technology

CNC coherent line cutting: five-axis machine tool cutting pipe truss nodes, bevel angle error ≤0.5°;

Robot welding: four-wire submerged arc welding depth of fusion ≥80%, heat input ≤2kJ/mm, deformation ≤3mm/m.

Anti-corrosion and fire treatment

Hot dip galvanizing: zinc layer thickness ≥85μm (ISO 1461), salt spray resistance ≥50 years;

Intumescent fireproof coating: thickness 2.5mm, fire resistance limit ≥2 hours (GB 14907).

Contact

Mobile number: 13848510731

Landline number: 0471-6490861

Address: Inside the courtyard of the Outer Transport Company, diagonally opposite the government of Haoqinying Town, Xincheng District, Hohhot City, Inner Mongolia (National Highway 110)