Seismic Resistant Steel Structure Truss

Category：

Steel Structure Truss
Browse number：

8
Release time：

2025-03-22 15:58:07
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Detailed Description

1、 Core seismic advantages

High ductility energy dissipation design

Node plastic rotation angle ≥ 0.03rad (GB 50011-2010 standard), capable of absorbing 30% -50% of seismic energy;

The axial deformation of the energy absorbing support (BRB) is ± 50mm, and the fatigue life is ≥ 50 cycles.

Multiple anti lateral force system

Central support system: X-shaped or V-shaped support, increasing lateral stiffness by 40%;

Eccentric support system: reduces damage to the main structure by dissipating energy through connecting beams.

Lightweight and low seismic force

Using high-strength steel such as Q420GQD, the structural self weight is reduced by 60% compared to concrete, and the seismic inertia force is reduced by 50%;

Typical span: 50-120m (column free space), suitable for large-span buildings such as sports arenas and transportation hubs.

Intelligent monitoring and rapid repair

Key nodes are implanted with fiber optic sensors to monitor stress and deformation in real-time;

Design of replaceable energy consuming components, with a post earthquake repair cycle of ≤ 7 days.

2、 Core product series and technical parameters

product type	Specifications and materials	Seismic technical indicators	Applicable scenarios
Buckling restrained support truss	BRB core material LY160, supporting section H200 × 200 × 10 × 16	Single energy consumption capacity ≥ 500kJ, design displacement ± 2% floor height	Schools and hospitals in high-intensity areas
Eccentric support truss	Connecting beam section H600 × 200 × 12 × 20 Q355B	Shear yield bearing capacity of continuous beam ≥ 1200kN	Commercial complex, data center
Steel tube concrete composite truss	Φ 325 × 12mm Q460C steel pipe+C50 concrete	Axial compressive bearing capacity ≥ 25000kN, damping ratio ≥ 0.05	Super high-rise corridors and overpasses
spatial grid structure	Bolt ball node with a diameter of 300 × 16mm, rod with a diameter of 159 × 8mm	Node tensile strength ≥ 800kN, shear strength ≥ 400kN	Airport terminal, exhibition center
Recoverable functional truss	SMA shape memory alloy nodes reinforced with prestressed steel strands	Post earthquake residual deformation ≤ 0.1%, self resetting rate ≥ 90%	Nuclear power plant, emergency command center

3、 Key Seismic Technologies

Node Ductility Design

Dog bone weakening (RBS): Cutting an arc-shaped notch at the end of the chord to guide the plastic hinge to move outward;

Strengthening with stiffeners: Horizontal stiffeners are installed in the node area to prevent local buckling.

Integration of energy consuming devices

Metal damper: Shear type steel plate damper, yield force 500-5000kN, displacement ± 50mm;

Friction pendulum support: friction coefficient 0.03-0.05, horizontal displacement capacity ± 300mm.

Innovation in Materials and Processes

Low yield point steel (LYP100): yield strength of 100MPa, elongation ≥ 40%, used for energy absorbing components;

Robot welding: The critical weld seam has a penetration depth of ≥ 85%, and the UT inspection pass rate is ≥ 99.8%.

BIM seismic analysis

Time history analysis: Input seismic waves such as El Centro and Taft to verify structural performance;

Damage control design: Allow non structural components to be damaged to ensure the safety of the main structure.

4、 Manufacturing and Testing Standards

Link	Standards and Requirements	Test method
steel properties	GB/T 19879-2015 (Steel Plates for Building Structures)	Tensile test, low-temperature impact (-40 ℃ ≥ 47J)
Procedure	AWS D1.1/D1.8 (Special Requirements for Seismic Nodes)	Ultrasonic Testing (UT)+Magnetic Particle Testing (MT)
Anti-corrosion treatment	ISO 12944 C5-M (Industrial Atmospheric Corrosion Environment)	Coating thickness gauge+scratch method adhesion test
Node fatigue	EN 1993-1-9 (detail category ≥ 80)	2 million cycles of load test

5、Intelligent operation and maintenance system

Health Monitoring (SHM)

Sensor network:

Strain sensor: accuracy ± 1 μ ε, sampling frequency 100Hz;

Accelerometer: Range ± 2g, frequency response 0-50Hz.

Warning platform:

Real time display of stress, displacement, and frequency changes;

AI algorithm identifies the location of damage (accuracy ≥ 95%).

Post earthquake rapid assessment

Unmanned aerial vehicle inspection: laser radar scanning for structural deformation (accuracy ± 3mm);

Generate damage reports on mobile apps to guide repair priorities.

Replaceable energy consuming components

Standardized BRB support: complete disassembly and installation within 10 minutes;

Modular design of dampers, with spare parts in stock available within 48 hours.

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)