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GAOERJI prefabricated bridges are manufactured in standardized factories and assembled on site in a modular manner, which can shorten the open circuit construction time by more than 60% and significantly reduce the risk of on-site wet work. GAOERJI is a source factory integrating design and manufacturing, skipping intermediate trade links and providing you with highly competitive direct selling prices and reliable quality in line with international load standards.
Bridge prefabricated is mainly used for rapid replacement of expressway interchanges, emergency repair across railways/rivers, heavy-duty logistics channels in mining areas and construction of municipal footbridges.
All main girders and cross beams are prefabricated in the factory, and only crane lifting and bolt fastening are required on site. This model reduces the traditional several-month cast-in-place period to one week, greatly reducing traffic control time and social costs.
CNC plasma cutting and robot welding process are adopted to ensure that the geometric dimension tolerance of large components is controlled within 1mm. High-precision prefabrication ensures “100 alignment of holes” during on-site assembly, avoiding hidden dangers of rework.
Finite element analysis according to AASHTO LRFD standard ensures that the bridge can easily carry more than 40 tons of standard trucks and special super-heavy equipment, suitable for harsh industrial and logistics transportation environments.
The steel component is immersed in a zinc liquid at 450°C to form an alloy layer with a thickness of not less than 85 microns. This physical isolation ensures that the bridge will not need to be repainted for maintenance for 30 years in a wet, salt spray environment.
The bridge structure is disassembled into units conforming to standard 1333.32cm container sizes. This optimized design not only reduces the cost of cross-border shipping costs, but also solves the logistics pain point of narrow roads and ultra-long components in remote mountainous areas.
there is no need for large-scale formwork support and concrete pouring on the site, which greatly reduces construction waste and pollution to surrounding water bodies and vegetation. It is the first choice for infrastructure construction in nature reserves and environmentally sensitive areas.
| Technical indicators | Parameter Standard | illustrate |
| Main beam type | Steel I-beams / Steel pipe trusses / Modular box girders | Select the type based on span and load requirements. |
| Design Specifications | AASHTO LRFD / Eurocode 3 | Conforms to mainstream international road and bridge design standards |
| Fatigue strength | 2 million cycles of load testing | Ensure structural durability under heavy traffic. |
| Bridge deck material | Corrugated steel sheet / Precast concrete slab / Fiberglass | Supports multiple road paving schemes |
| Installation tolerances | Mid-span deflection ≤ L/800 | Strictly implement the verticality specifications for high-grade bridges |
| Fastener grade | ASTM A325 / A490 High Strength Bolts | Ensure the shear and tensile strength of the node connections |
| Seismic fortification | 0.4g acceleration intensity design | Infrastructure suitable for seismically active zones |
For projects facing stringent schedule requirements (e. g., 48-hour weekend traffic tasks). The GAOERJI prefabricated bridge scheme can effectively reduce the human input and traffic interference compensation risk on the construction site.
for government units that need to quickly solve urban congestion and install pedestrian overpasses. Modular bridges are aesthetically pleasing and quick to install, minimizing the impact on the day-to-day operation of the city.
for customers who need to quickly set up heavy logistics corridors in remote areas without concrete supply conditions. The easy-to-transport and easy-to-install characteristics of prefabricated bridges are perfectly adapted to harsh environments.
for departments that need to get through the lifeline quickly after being damaged by natural disasters. Our modular storage scheme can realize “adjustment and installation” and restore the logistics of disaster areas in the shortest time.
pre-sales provide hoisting simulation and structural deepening design based on on-site working conditions; after-sales provide 24-hour remote installation guidance, and can send senior engineers to the site to supervise assembly. We provide a 20-year global quality guarantee for the main structure.
the design service life of the main structure of the prefabricated bridge is 100 years. It is recommended to check the connecting bolts and clean the drain holes every 2 years. Thanks to the heavy anti-corrosion process, the structure is basically maintenance-free for the first 20-30 years in a conventional environment.
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GAOERJI prefabricated bridges are manufactured in standardized factories and assembled on site in a modular manner, which can shorten the open circuit construction time by more than 60% and significantly reduce the risk of on-site wet work. GAOERJI is a source factory integrating design and manufacturing, skipping intermediate trade links and providing you with highly competitive direct selling prices and reliable quality in line with international load standards.
Q345B/Q420 grade high strength steel
Material
single span up to 60 meters
Span range
support HL-93 heavy load class
Maximum load
All main girders and cross beams are prefabricated in the factory, and only crane lifting and bolt fastening are required on site. This model reduces the traditional several-month cast-in-place period to one week, greatly reducing traffic control time and social costs.
CNC plasma cutting and robot welding process are adopted to ensure that the geometric dimension tolerance of large components is controlled within 1mm. High-precision prefabrication ensures “100 alignment of holes” during on-site assembly, avoiding hidden dangers of rework.
Finite element analysis according to AASHTO LRFD standard ensures that the bridge can easily carry more than 40 tons of standard trucks and special super-heavy equipment, suitable for harsh industrial and logistics transportation environments.
The steel component is immersed in a zinc liquid at 450°C to form an alloy layer with a thickness of not less than 85 microns. This physical isolation ensures that the bridge will not need to be repainted for maintenance for 30 years in a wet, salt spray environment.
The bridge structure is disassembled into units conforming to standard 1333.32cm container sizes. This optimized design not only reduces the cost of cross-border shipping costs, but also solves the logistics pain point of narrow roads and ultra-long components in remote mountainous areas.
there is no need for large-scale formwork support and concrete pouring on the site, which greatly reduces construction waste and pollution to surrounding water bodies and vegetation. It is the first choice for infrastructure construction in nature reserves and environmentally sensitive areas.
| Technical indicators | Parameter Standard | illustrate |
| Main beam type | Steel I-beams / Steel pipe trusses / Modular box girders | Select the type based on span and load requirements. |
| Design Specifications | AASHTO LRFD / Eurocode 3 | Conforms to mainstream international road and bridge design standards |
| Fatigue strength | 2 million cycles of load testing | Ensure structural durability under heavy traffic. |
| Bridge deck material | Corrugated steel sheet / Precast concrete slab / Fiberglass | Supports multiple road paving schemes |
| Installation tolerances | Mid-span deflection ≤ L/800 | Strictly implement the verticality specifications for high-grade bridges |
| Fastener grade | ASTM A325 / A490 High Strength Bolts | Ensure the shear and tensile strength of the node connections |
| Seismic fortification | 0.4g acceleration intensity design | Infrastructure suitable for seismically active zones |
For projects facing stringent schedule requirements (e. g., 48-hour weekend traffic tasks). The GAOERJI prefabricated bridge scheme can effectively reduce the human input and traffic interference compensation risk on the construction site.
for government units that need to quickly solve urban congestion and install pedestrian overpasses. Modular bridges are aesthetically pleasing and quick to install, minimizing the impact on the day-to-day operation of the city.
for customers who need to quickly set up heavy logistics corridors in remote areas without concrete supply conditions. The easy-to-transport and easy-to-install characteristics of prefabricated bridges are perfectly adapted to harsh environments.
for departments that need to get through the lifeline quickly after being damaged by natural disasters. Our modular storage scheme can realize “adjustment and installation” and restore the logistics of disaster areas in the shortest time.