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Assemble steel structure bridge

Welded steel structure bridges integrate high-strength lightweight, large-span adaptability, and full life cycle economy. High performance bridge steel is used to achieve a 40% increase in bearing capacity and a 30% -50% reduction in weight. The welded overall nodes support pier free large-span designs of over 300 meters, and are equipped with multiple anti-corrosion systems and seismic energy dissipation designs to ensure a hundred year lifespan and 9-degree seismic resistance. The factory's intelligent prefabrication and on-site modular construction shorten the construction period by 50%. At the same time, it has the green advantage of 100% steel recycling and a 60% reduction in carbon emissions, and supports BIM digital twin and real-time health monitoring, providing a safe, efficient, and sustainable comprehensive solution for modern bridge engineering.

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Product Details

Introduction

Welded steel structure bridges, with their high-performance materials and advanced manufacturing processes, have demonstrated significant advantages in modern bridge engineering, specifically reflected in the following aspects:

1.Excellent structural performance

Using high-strength bridge steel (such as Q355qD/Q420qD), the yield strength reaches over 355MPa, and the bearing capacity is increased by more than 40% compared to traditional concrete structures. At the same time, lightweight (reducing weight by 30% -50%) is achieved, significantly reducing foundation costs and seismic loads.

2.Strong span adaptability

By using welding technology to achieve the overall formation of complex nodes, it supports large-span design (single span up to 300 meters or more), reduces the number of bridge piers, and adapts to complex terrain requirements such as rivers and canyons.

3.Durability and anti-corrosion protection

The welded structure has no risk of loose bolt connections and better overall integrity; Equipped with multiple anti-corrosion systems (such as hot spray aluminum+epoxy cloud iron+fluorocarbon topcoat), the design life exceeds 100 years, and the maintenance cycle is long and the cost is low.

4.Double high construction efficiency and precision

Factory based prefabricated welding (with an automation rate of over 90%), with component size accuracy controlled within ± 2mm, and on-site modular assembly speed increased by more than 50% compared to cast-in-place concrete, significantly shortening the construction period.

5.Excellent seismic and dynamic performance

The welding nodes have good ductility and can meet the 9-degree seismic fortification requirements through energy dissipation design (such as buckling restrained braces); Optimization of bridge natural frequency effectively reduces vehicle traffic vibration and noise.

6.Green, environmentally friendly, and sustainable

The steel recycling rate is 100%, and the carbon emissions during the construction process are reduced by 60% compared to concrete structures; It can integrate green technologies such as photovoltaic guardrails to achieve self supply of energy.

7.Intelligent operation and maintenance integration is convenient

Reserved sensor interface, supporting BIM digital twin management, real-time monitoring of stress, deformation and other data, empowering preventive maintenance and full lifecycle management.

Assemble steel structure bridge

Welded steel structure bridges have been widely used in major projects such as cross sea bridges, urban overpasses, and railway dedicated bridges (such as the Hong Kong Zhuhai Macao Bridge and the Hangzhou Bay Cross sea Bridge), and their technological maturity has been certified by international standards (EN 1090, AWS D1.5). They are the core solution for the future development of bridge engineering towards efficiency, longevity, and intelligence.

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