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tetikasa

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Steel space grid gas station project construction

Ity tetikasa ity dia tora-pasika efa-joro / haavony 16 metatra / totalin'ny halavany 30 metatra / totaliny 18 metatra

1. Ny fametrahana ny toeran'ny vy dia tsy maintsy atao aorian'ny fanekena ny axis rafitra ambany sy ny birao napetraka.Ny fepetra takiana amin'ny fanohanana ambany dia: ny fahasamihafan'ny haavon'ny fanohanana mifanakaiky (halavirana L2): ny sanda kely kokoa amin'ny L2 / 800 sy 10mm, amin'ny haavony mitovy Haavo fahasamihafana eo amin'ny fanohanana ambony sy ambany indrindra: 20mm;

2. Farito ny fizotry ny fametrahana ny rafitra vy amin'ny alàlan'ny hery sy ny toetran'ny rafitry ny grid ary ny toetry ny fanorenana eo amin'ny toerana;

3. Aorian'ny fametrahana ny rafitra vy, dia tokony hojerena izany:

a.Ny sanda azo ekena amin'ny fivilian-dava mitsangana sy mitsivalana dia 1/2000 amin'ny halavany, ary tsy tokony hihoatra ny 30mm;

b.Ny sandan'ny offset afovoany dia tokony ho 1/3000 amin'ny halavan'ny rafitra vy, ary tsy tokony hihoatra ny 30mm;

c.Ho an'ny rafitra harato tohanan'ny periphery, ny fivilian-dàlana azo atao dia 1/400 amin'ny fanohanana mifanila, ary tsy tokony hihoatra ny 15mm, ary ny ambony indrindra sy ny kely indrindra dia tsy tokony hihoatra ny 30mm;ho an'ny rafitra harato tohanan'ny teboka maromaro, ny fivilian-dàlana azo atao dia 1/800 amin'ny fanohanana mifanila, ary tsy tokony hihoatra ny 30mm;

d.Tadiavo ny fivilian'ny grid araka ny fepetra sy ny fepetra takian'ny famolavolana.Aorian'ny fanorenana, ny fivilian'ny habakabaka vy dia tsy tokony hihoatra ny 115% amin'ny sandan'ny kajy.(Sandan'ny fiviliana fara-tampony amin'ny sarin-tsarimihetsika L/250)

4. Raha misy baolina welding eo an-toerana, ny welding groove dia ampiasaina amin'ny welding ny welding baolina sy ny tsorakazo, ary ny welding seam kilasy dia tsy tokony ho ambany noho ny faharoa kilasy.

5. Rehefa vita ny fametrahana ny rafitra vy, dia tokony ho madio sy tsy misy ratra sy loto ny endrik'ireo tonon-taolana sy tsorakazo.Ny tonon-taolana sy ny lavaka be loatra amin'ny bolt ball joints dia tokony hofenoina sy hofehezina amin'ny menaka.

6. Nandritra ny fampiasana ny grid, feno fikojakojana ny anti-corrosion dia tokony hatao isaky ny 4 ka hatramin'ny 5 taona.

 

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.
Fotoana fandefasana: Mar-10-2022
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