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Steel space grid gas station project construction

Detta projekt är en kvadratisk rymdram / höjd 16 meter / total längd 30 meter / total spännvidd 18 meter

1. Installationen av stålutrymmesramen måste utföras efter godkännande av den nedre strukturaxeln och den inbäddade brädan.Kraven för det nedre stödet är: höjdskillnaden mellan intilliggande stöd (avstånd L2): det mindre värdet på L2/800 och 10 mm, vid samma höjd Höjdskillnad mellan högsta och lägsta stöd: 20 mm;

2. Bestäm installationsprocessen för rymdramen av stål enligt kraften och strukturella egenskaper hos nätet och de faktiska konstruktionsförhållandena på plats;

3. Efter att stålutrymmesramen har installerats bör den kontrolleras:

a.Det tillåtna värdet för den vertikala och horisontella sidolängdsavvikelsen är 1/2000 av längden och bör inte vara större än 30 mm;

b.Det tillåtna värdet för centrumförskjutning bör vara 1/3000 av spännvidden av stålutrymmesramen och bör inte vara större än 30 mm;

c.För nätramen som stöds av periferin är den tillåtna höjdavvikelsen 1/400 av det intilliggande stödet, och bör inte vara större än 15 mm, och max och minimum bör inte vara större än 30 mm;för nätramen som stöds av flera punkter är den tillåtna höjdavvikelsen 1/800 av det intilliggande stödet och bör inte vara större än 30 mm;

d.Detektera gallrets avböjning enligt specifikationerna och designkraven.Efter konstruktionen ska nedböjningen av stålutrymmesramen inte vara större än 115 % av konstruktionsberäkningsvärdet.(Maximalt avböjningsvärde för gallerram L/250)

4. Om det finns svetskulor lokalt används spårsvetsning för svetsning av svetskulan och staven, och svetsfogsgraden bör inte vara lägre än den andra graden.

5. Efter att installationen av rymdramen av stål är klar ska ytan på skarvarna och stängerna vara ren och fri från ärr och smuts.Förbanden och överskottshålen i bultkullederna ska fyllas och tätas med fett.

6. Under användningen av nätet bör omfattande rostskyddsunderhåll utföras vart 4:e till 5:e år.

 

1. The installation of the grid frame must be carried out after the acceptance of the lower structure axis and the embedded board. The requirements for the lower support are: the height difference between adjacent supports (distance L2): the smaller value of L2/800 and 10mm, at the same elevation Height difference between the highest and lowest support: 20mm; 2. Determine the installation process of the grid according to the force and structural characteristics of the grid and the actual construction conditions on site; 3. After the grid frame is installed, it should be checked: a. The allowable value of the vertical and horizontal side length deviation is 1/2000 of the length, and should not be greater than 30mm; b. The allowable value of center offset should be 1/3000 of the span of the grid, and should not be greater than 30mm; c. For the mesh frame supported by the periphery, the allowable height deviation is 1/400 of the adjacent support, and should not be greater than 15mm, and the maximum and minimum should not be greater than 30mm; for the mesh frame supported by multiple points, the allowable height deviation is 1/800 of the adjacent support, and should not be greater than 30mm; d. Detect the deflection of the grid according to the specifications and design requirements. After construction, the deflection of the grid frame shall not be greater than 115% of the design calculation value. (Maximum deflection value of grid frame L/250) 4. If there are welding balls locally, groove welding is used for welding the welding ball and the rod, and the welding seam grade should not be lower than the second grade. 5. After the installation of the grid frame is completed, the surface of the joints and rods should be clean and free of scars and dirt. The joints and excess holes of the bolt ball joints should be filled and sealed with grease. 6. During the use of the grid, comprehensive anti-corrosion maintenance should be carried out every 4 to 5 years.
1. The installation of the grid frame must be carried out after the acceptance of the lower structure axis and the embedded board. The requirements for the lower support are: the height difference between adjacent supports (distance L2): the smaller value of L2/800 and 10mm, at the same elevation Height difference between the highest and lowest support: 20mm; 2. Determine the installation process of the grid according to the force and structural characteristics of the grid and the actual construction conditions on site; 3. After the grid frame is installed, it should be checked: a. The allowable value of the vertical and horizontal side length deviation is 1/2000 of the length, and should not be greater than 30mm; b. The allowable value of center offset should be 1/3000 of the span of the grid, and should not be greater than 30mm; c. For the mesh frame supported by the periphery, the allowable height deviation is 1/400 of the adjacent support, and should not be greater than 15mm, and the maximum and minimum should not be greater than 30mm; for the mesh frame supported by multiple points, the allowable height deviation is 1/800 of the adjacent support, and should not be greater than 30mm; d. Detect the deflection of the grid according to the specifications and design requirements. After construction, the deflection of the grid frame shall not be greater than 115% of the design calculation value. (Maximum deflection value of grid frame L/250) 4. If there are welding balls locally, groove welding is used for welding the welding ball and the rod, and the welding seam grade should not be lower than the second grade. 5. After the installation of the grid frame is completed, the surface of the joints and rods should be clean and free of scars and dirt. The joints and excess holes of the bolt ball joints should be filled and sealed with grease. 6. During the use of the grid, comprehensive anti-corrosion maintenance should be carried out every 4 to 5 years.
1. The installation of the grid frame must be carried out after the acceptance of the lower structure axis and the embedded board. The requirements for the lower support are: the height difference between adjacent supports (distance L2): the smaller value of L2/800 and 10mm, at the same elevation Height difference between the highest and lowest support: 20mm; 2. Determine the installation process of the grid according to the force and structural characteristics of the grid and the actual construction conditions on site; 3. After the grid frame is installed, it should be checked: a. The allowable value of the vertical and horizontal side length deviation is 1/2000 of the length, and should not be greater than 30mm; b. The allowable value of center offset should be 1/3000 of the span of the grid, and should not be greater than 30mm; c. For the mesh frame supported by the periphery, the allowable height deviation is 1/400 of the adjacent support, and should not be greater than 15mm, and the maximum and minimum should not be greater than 30mm; for the mesh frame supported by multiple points, the allowable height deviation is 1/800 of the adjacent support, and should not be greater than 30mm; d. Detect the deflection of the grid according to the specifications and design requirements. After construction, the deflection of the grid frame shall not be greater than 115% of the design calculation value. (Maximum deflection value of grid frame L/250) 4. If there are welding balls locally, groove welding is used for welding the welding ball and the rod, and the welding seam grade should not be lower than the second grade. 5. After the installation of the grid frame is completed, the surface of the joints and rods should be clean and free of scars and dirt. The joints and excess holes of the bolt ball joints should be filled and sealed with grease. 6. During the use of the grid, comprehensive anti-corrosion maintenance should be carried out every 4 to 5 years.

Posttid: Mar-10-2022