Why do factories with overhead cranes require a special structural solution?
Factory buildings equipped with overhead cranes are among the most complex types of steel structures. Unlike conventional factory buildings, these structures must withstand large, repetitive dynamic loads throughout their operation.
If not properly designed, factory buildings can experience vibration, beam sagging, joint cracking, or reduced structural lifespan.
Crane load characteristics
Crane load capacity includes:
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Crane's own weight
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Lifting
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Dynamic load during movement, braking, and acceleration.
Unlike static loads, crane loads constantly changing position and causes fatigue effects on the structure. This is the biggest difference compared to a factory without an overhead crane.
The main structural components in the factory building include overhead cranes.
Crane girder
Crane girders are structural components that directly bear the load from the crane. The girders need to have:
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High hardness
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Tightly control the deflection.
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Good fatigue resistance
Steel columns and connections
The column not only bears vertical loads but also horizontal forces transmitted by the crane. The connection between the crane girder and the column needs to be precisely designed to avoid stress concentration.
Technical requirements for designing factory structures with overhead cranes.
Designing a factory with an overhead crane requires:
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Calculate the full dynamic load.
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Control sagging and vibration.
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Choose the appropriate cross-section.
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Arrange the bracing system appropriately.
In addition, the Synchronization between design – fabrication – assembly It plays a very important role.
The risks of an inappropriate design.
If the design does not meet technical requirements, the construction project may encounter the following problems:
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Crane girder sagging exceeds limits.
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Vibration occurs when the crane is in operation.
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Cracked welds, loose bolts
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Reduced structural lifespan.
These problems are often difficult to fix once the factory is operational.
Designing steel structures for factory buildings with overhead cranes is a complex engineering problem, requiring careful calculations and practical experience. A thorough understanding of load characteristics and structural requirements is a prerequisite for the safe, stable, and sustainable operation of the building.
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- HAI LONG CONSTRUCTION JOINT STOCK COMPANY – MEMBER OF TAIYO GROUP
- Address: Taiyo Building, 97 Bach Dang, Hong Bang Ward, Hai Phong City, Vietnam.
- Hotline: 084 6625 888
- Email: info@hailongjsc.vn
