72m Span Gantry Crane for Jianzhou Steel Box Girder Bridge
Featured project image showing the long-span gantry cranes crossing the bridge construction corridor.
Long-span steel box-girder bridge construction can require a gantry crane to cross a very wide roadway or river-adjacent work area while lifting large fabricated sections. Span, side thrust, wind load, wheel load and lifting height become especially important as gantry width increases.
Henan Mine Crane supplied a 72 m large-span gantry crane for the Jianzhou Bridge project. The source page confirms the 72 m span; the included project-media screenshot reports a rated lifting capacity of 75t and a lifting height of 23 m.
Project Background
The Jianzhou Bridge has a total length of 580.5 m and uses a fully welded variable-section continuous steel box girder. The source states that the lifting requirements were strict and the crane was selected after technical discussion and evaluation.
A 72 m gantry span creates greater structural and wind-design challenges than a compact fabrication-yard crane. Runway straightness, foundation stiffness and leg behavior must therefore be considered with the crane structure.
Customer Challenges
- Achieving a 72 m gantry span while controlling structural deflection and self-weight.
- Handling long steel box-girder fabrication and assembly loads.
- Maintaining stable travel across a very wide runway.
- Managing wind loads and out-of-square travel on long-span gantry structures.
- Providing sufficient lifting height for bridge structures and rigging.
- Coordinating crane installation with roadway and bridge construction activities.
Henan Mine Crane Solution
The referenced crane spans 72 m across the Jianzhou Bridge construction area. Project media included on the source page states a rated capacity of 75t and lifting height of 23 m.
For a similar wide-span application, Henan Mine Crane can analyze girder stiffness, leg forces, wheel loads, wind loads and runway geometry together with the lifting requirement.
Travel synchronization, anti-skew protection, braking and storm-safety measures should be defined according to span, site exposure and local design standards.
| Recommended Crane |
72m Large-Span Bridge Construction Gantry Crane |
| Referenced Span |
72 m |
| Referenced Project Media |
75t rated capacity + 23 m lifting height |
| Bridge Structure |
Fully welded variable-section continuous steel box girder |
| Engineering Focus |
Deflection, wind, wheel loads, travel synchronization and runway accuracy |
Project view of the yellow long-span gantry crane installed above the Jianzhou Bridge construction area.
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Source project-media screenshot reporting the long-span gantry crane dimensions and bridge-construction application.
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Key Technical Features
72m Large-Span Coverage
The crane crosses a very wide bridge-construction work zone.
Steel Box-Girder Handling
The project supports construction of a welded steel box-girder bridge.
High Structural Stiffness Requirement
Long spans require careful girder-deflection and leg-force analysis.
Wide-Runway Travel Control
Travel synchronization and anti-skew design become increasingly important as gantry span grows.
Project-Specific Civil Coordination
Runway and foundation behavior must be coordinated with the heavy crane structure.
Application Scenarios
| Steel Box Girder Bridges |
Fabrication and lifting of long welded bridge modules. |
| Wide Construction Corridors |
Gantry lifting across roads, bridge decks or broad assembly zones. |
| Large Steel Structure Projects |
Outdoor handling where conventional workshop cranes cannot provide coverage. |
| Bridge Assembly Yards |
Transfer and alignment of large fabricated structural sections. |
Why Choose Henan Mine Crane
- Henan Mine Crane can analyze long-span gantry structure and runway behavior as one system.
- Capacity, lifting height and span can be matched to the actual bridge section and rigging arrangement.
- Travel synchronization, anti-skew and wind protection can be defined for the site environment.
- Installation planning can be coordinated with bridge construction and temporary traffic/site restrictions.
Frequently Asked Questions
What are the most important design inputs for a 72 m span gantry crane?
Provide capacity, lifting height, runway length, rail/foundation data, maximum wind conditions, duty, travel speed, load dimensions and required deflection or positioning limits.
What capacity was shown for the Jianzhou project crane?
The source page confirms the 72 m span, and its embedded project-media screenshot reports a rated capacity of 75t and a lifting height of 23 m.
Does a longer gantry span increase runway requirements?
Yes. Structural deflection, wind response, wheel loads, skew and runway accuracy become more influential as span increases.
Request A Construction Engineering Crane Solution
Send your maximum load, structure or equipment drawings, project layout, span, lifting height, runway information, operating cycle and construction schedule. Henan Mine Crane engineers will review the application and prepare a project-specific crane proposal.
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