It is understood that many vegetable farmers have pushed down the old sheds to rebuild them. However, due to the restrictions of the plots, the area of ​​the sheds cannot be increased, so the vegetable farmers can only increase the height of the sheds. The higher the shed, the greater the impact on adverse environmental conditions such as wind and snow, so the resistance should be strengthened.
The author believes that the ridge height of the shed is increased, and its resistance should be strengthened from the following four aspects.
First, the steel wire is laid and dense. The spacing of the wires increases from north to south. If the rear roof is to bear the pressure of insulation covering and covering soil, the spacing of the steel wire is generally about 10 cm; the pillars on both sides of the corridor and the northernmost planting side should bear the pressure after the shed cover is pulled up. The spacing of the steel wire is generally 15-20. Between the centimeters, the pressure in the middle column of the shed is relatively light, the spacing of the steel wire can be between 20-25 cm, the pressure on the south side of the shed is the smallest, and the spacing of the steel wire is wider, generally about 25 cm.
Second, after a certain height, the cement column is replaced by a steel pipe. It is understood that after the cement column exceeds 7 meters, even if steel bars are added, there is a high possibility that the column will break when the shed surface is slightly shaken. Therefore, when the shed column exceeds 7 meters, the steel pipe or tubing that is not easily broken should be replaced. In order to prevent sinking, a square chassis can be welded at the bottom, and the chassis is under the brick to ensure that the column will not sink.
Third, there are three horizontal columns on the outside of the gable. Since the steel wire is used in a large amount and the stressed steel wire is easily embedded in the wall, three horizontal columns must be added to the mountain walls. The first horizontal column is located at the top of the gable. The purpose is to prevent the steel wire from moving and embedding on the shed surface, ensuring the stability of the shed wire over a long period of time. The second is located in the middle of the outer side of the gable to prevent the wire from moving and being embedded. Since the column is prone to slip on the slope of the wall, a short steel tube can be embedded in the wall to fix the column. The third column is a hanging wire for fixing through the wall. In addition, a column can be placed inside the ground anchor, the purpose of which is to prevent the ground anchor wire from moving after being pulled by the wire of the shed surface.
The fourth is to strengthen the resistance of the front roof. The shed mask is pulled out of the five-way laminating steel wire, and the steel wire is all made of non-woven sleeve to avoid abrasion on the shed film. These five wires increase in order from top to bottom. The longitudinal laminating rope is fixed with a claw-shaped hook. It is convenient to adjust the laminating rope to the optimum level.
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