Problems in handling of large steel structure

Problems in handling of large steel structure

1。In the application of diaphragms or diaphragms between steel parts, the supporting pads of the upper and lower parts shall be in the same straight line and closely contact with corrugations or straw bags.The wire rope is connected with the basket bolt and fixed on the carriage to avoid sliding deformation or mutual collision damage.

 

2。When transporting steel members, the strength of roof and thin-walled members shall reach 100%.

 

3。The transportation of Guiyang steel structure members shall be matched and organized according to the hoisting sequence and flow direction.According to the layout plan, it should be placed in the plane and stacked in the plane.First of all, we should first remove the confusion and avoid two times of reverse transportation.

 

4。The loading and unloading of hoisting steel parts shall be carried out with care.Throwing is strictly prohibited.Collision or collision shall be strictly avoided during transportation.

 

5。The transportation road shall be flat and solid to ensure sufficient width and turning radius of nitrate road surface.The single lane of truck shall not be less than 3.5m; the single lane width of trailer shall not be less than 4m, and there shall be suitable meeting points, and the width of double lane shall not be less than 6m.Turning radius: no less than 10 m for trucks; no less than 15 m for semi trailers; no less than 20 m for full trailers.Transportation roads shall be inspected and maintained frequently.

 

6。 The transportation requirements of steel structure components are as follows: according to the type, size, quality, construction period requirements, transportation distance, cost, efficiency and site specific conditions of components, appropriate transportation tools and loading and unloading machines and tools shall be selected.

 

7。During loading, the supporting point of some components shall be placed on the vehicle spring horizontally, the applied load shall be uniform and symmetrical, and the components shall be kept in balance with weight and center.The center of the components shall coincide with the loading center of the vehicle, and they shall be fixed firmly. The components with large rigidity can also be placed horizontally.

 

8。The support point of the point.During loading and unloading, the steel parts shall be as close as possible to the supporting state or design requirements required by the design, such as the change of bearing state at the supporting lifting point, so as to check the crack resistance and CRA of the components.If the width of CK cannot meet the requirements, proper consolidation shall be carried out.

 

9。For parts with large width to width ratio or laminated components, tool support frame, fixed frame, support or chain fall must be set according to the external dimension and quality of the component to prevent dumping. Suspension transportation is strictly prohibited..The design and calculation of the support shall ensure sufficient strength and rigidity, and the support shall be stable and reliable, convenient for loading and unloading.

 

10。Large steel structure is transported by trailer, and steering device is set on support to make it rotate freely.At the same time, the loading direction should be determined according to the lifting method and transportation direction to avoid the difficulty of setting the head.


Post time: Jun-24-2020