The following is the product introduction of high-strength steel joist, which is presented in modules by combining technical characteristics, application scenarios and industry advantages:

I. Product Overview

High-strength steel joist is a spatial stress system made of high-quality and high-strength steel (e.g. Q420GJC, Q460, etc.) as the core material through precision welding or bolt connection technology. Its structure is mainly composed of chords, webs and node plates, and it realizes efficient load transfer through triangular units or complex geometrical arrangement, which is characterized by large span, light weight and strong stability, and it is widely used in large-scale venues, bridges, industrial plants and ultra-high-rise buildings. 

Core material and structural characteristics

1、Material Performance

High-strength steel: High-performance steel with yield strength ≥420MPa is used, manufactured through hot rolling or cold bending molding process, which is both lightweight and high load-bearing capacity, and reduces weight by 20%-30% compared with traditional steel.

Corrosion-resistant treatment: the surface is galvanized or sprayed with anti-corrosion coating to adapt to extreme climatic conditions and extend the service life to more than 50 years.

2、Structural Design

Rigid node optimization: Adopt coherent node or box section connection technology to ensure the transfer of axial force of rods, reduce eccentric stress, and improve the overall bending and shear resistance.

Modular combination: Supporting various forms such as triangular, trapezoidal, polygonal and space cantilever truss (e.g. K-type, rhombic web system), and customized spans (up to 120m) and loading requirements.

Technical Advantages

1、Excellent Mechanical Properties

High Span Ratio Design: Through the optimization of 1/5~1/12 reasonable high span ratio, deflection and deformation can be reduced to meet the demand of large span space without columns (such as gymnasium, exhibition center).

Seismic and wind resistance: The three-dimensional space truss structure can disperse dynamic loads and enhance lateral stiffness through bracing system (horizontal and vertical bracing and tie rods), which can withstand earthquakes of magnitude 8 or above and strong wind loads.

2、Construction efficiency and environmental protection

Assembly construction: the prefabrication rate of the factory is over 90%, and only assembly is required on site, which shortens the construction period by 50% compared with the traditional concrete structure.

Green energy saving: steel can be recycled 100%, carbon emission is reduced by 40% compared with concrete, in line with green building standards.

IV. Application Areas

1、Large public buildings

Cultural venues: such as theaters (Zhuzhou Shennong Theater), museums (Chengdu Guanghui Xuelian Hall) roof and cantilevered structure, creating a large space without columns.

Transportation hubs: roof support systems for high-speed rail stations and airport terminals, with spans of up to 60 meters or more.

2、Industry and Infrastructure

Industrial plant: heavy workshop truss girders (e.g. final assembly workshop of Shenlong Automobile), adapting to crane load and vibration environment.

Bridges and Pylons: Main girders of power transmission towers and sea-crossing bridges adopt space trusses, realizing kilometer-level span and ultra-high-level stability.

3、Special Scene

Ice and Snow Venue: such as Xiangjiang Happy City Ice and Snow World, which adopts giant box section truss to support deep pit suspension structure.

Emergency facilities: Quickly built assembly trusses are used in temporary hospitals and disaster relief command centers.

V. Production Process and Quality Control

1、Intelligent Manufacturing

Digital modeling: simulate force based on BIM technology, optimize rod layout and node design.

Automated welding: robot welding system is introduced to ensure that the weld is continuous and defect-free all around, which is in line with AWS/GB standard.

2、Strict Inspection Standards

Non-destructive testing: ultrasonic and magnetic particle testing are used to ensure that the weld seam and base material are free of cracks and porosity.

Load test: preloaded with 1.5 times the design load to verify structural safety redundancy Strict testing standards

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)