Steel sheet piles are long structural sections with a vertical interlocking system that create a continuous wall. The walls are often used to retain either soil or water. Steel sheet piles can be divided into cold-formed steel sheet piles and hot-rolled steel sheet piles.
During the transportation or construction process of steel sheet piles, it is inevitable that there will be some damage and deformation. But even if there is some deformation, it can continue to be used after certain repairs and can be reused many times.
How to repair steel sheet piles?
Steel sheet piles are repeatedly pulled out during the construction process, resulting in high pressure, welding, rain flooding, corrosion, vibration pulling, deformation, cracking, and inevitable bending of steel sheet piles during the pile pulling process. In order to reliably reuse steel sheet piles, they need to be repaired and corrected.
1. Surface defects of steel sheet piles caused by corrosion
First, remove the rust and oil stains on the surface near the defects of Larsen steel sheet piles, then fill them with a welding repair method, and then smooth them with a grindstone.
2. The surface of steel sheet piles protrudes due to welding
First, cut the protruding welded part on the surface of the steel sheet pile with oxygen, and then smooth it with a grindstone.
3. Repeated piling by the steel sheet pile machine causes deformation of the steel sheet piles.
Use oxyacetylene to cut the upper part of the steel sheet pile perpendicular to the axis, and use a whetstone to smooth the cut surface and repair it. If the amount of trimming is small, just trim it with a grindstone.
4. Steel sheet piles bend due to high pressure
Fix both ends of the bent part of the steel sheet pile on the support points, and use an installation jack to correct the protruding part of the steel sheet pile.
The transverse bending of the steel sheet pile is corrected by a special correction table. Both ends of the bent part of the steel sheet pile are fixed on the bracket of the correction table, and the jack is installed at a certain distance on the side. The steel plate is pressed into the correction table of the jack and the bending part of the Larson steel sheet pile, to perform cold bending correction on the protruding part of the pile.
5. Piling vibration and tension cause local deformation of steel sheet piles
Correction is performed using a combination of jack press, sledge hammer knocking, and oxyacetylene flame drying.
When reusing steel sheet piles, you also need to pay attention to the following points:
1. Cleaning and maintenance: After use, the steel sheet piles need to be cleaned and maintained to make them meet the conditions for rework and anti-corrosion treatment.
2. Use in strict accordance with regulations: The reuse of steel sheet piles must comply with relevant national and industry standards and regulations, and be used in strict accordance with the requirements.
3. Strengthen inspection: When reusing, it is necessary to strengthen the inspection and monitoring of steel sheet piles, and pay attention to observe whether there are serious deformations, damages, cracks, etc.
4. Control the number of uses: The number of reuses of steel sheet piles should be subject to certain limits to control the circulation of unqualified steel sheet piles.
During the transportation or construction process of steel sheet piles, it is inevitable that there will be some damage and deformation. But even if there is some deformation, it can continue to be used after certain repairs and can be reused many times.
How to repair steel sheet piles?
Steel sheet piles are repeatedly pulled out during the construction process, resulting in high pressure, welding, rain flooding, corrosion, vibration pulling, deformation, cracking, and inevitable bending of steel sheet piles during the pile pulling process. In order to reliably reuse steel sheet piles, they need to be repaired and corrected.
1. Surface defects of steel sheet piles caused by corrosion
First, remove the rust and oil stains on the surface near the defects of Larsen steel sheet piles, then fill them with a welding repair method, and then smooth them with a grindstone.
2. The surface of steel sheet piles protrudes due to welding
First, cut the protruding welded part on the surface of the steel sheet pile with oxygen, and then smooth it with a grindstone.
3. Repeated piling by the steel sheet pile machine causes deformation of the steel sheet piles.
Use oxyacetylene to cut the upper part of the steel sheet pile perpendicular to the axis, and use a whetstone to smooth the cut surface and repair it. If the amount of trimming is small, just trim it with a grindstone.
4. Steel sheet piles bend due to high pressure
Fix both ends of the bent part of the steel sheet pile on the support points, and use an installation jack to correct the protruding part of the steel sheet pile.
The transverse bending of the steel sheet pile is corrected by a special correction table. Both ends of the bent part of the steel sheet pile are fixed on the bracket of the correction table, and the jack is installed at a certain distance on the side. The steel plate is pressed into the correction table of the jack and the bending part of the Larson steel sheet pile, to perform cold bending correction on the protruding part of the pile.
5. Piling vibration and tension cause local deformation of steel sheet piles
Correction is performed using a combination of jack press, sledge hammer knocking, and oxyacetylene flame drying.
When reusing steel sheet piles, you also need to pay attention to the following points:
1. Cleaning and maintenance: After use, the steel sheet piles need to be cleaned and maintained to make them meet the conditions for rework and anti-corrosion treatment.
2. Use in strict accordance with regulations: The reuse of steel sheet piles must comply with relevant national and industry standards and regulations, and be used in strict accordance with the requirements.
3. Strengthen inspection: When reusing, it is necessary to strengthen the inspection and monitoring of steel sheet piles, and pay attention to observe whether there are serious deformations, damages, cracks, etc.
4. Control the number of uses: The number of reuses of steel sheet piles should be subject to certain limits to control the circulation of unqualified steel sheet piles.
