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Steel space grid gas station project construction

Ta projekt je kvadratni prostorski okvir / višina 16 metrov / skupna dolžina 30 metrov / skupni razpon 18 metrov

1. Montaža jeklenega prostorskega okvirja mora biti izvedena po prevzemu spodnje konstrukcijske osi in vgrajene plošče.Zahteve za spodnjo oporo so: višinska razlika med sosednjimi nosilci (razdalja L2): manjša vrednost L2/800 in 10 mm, pri isti višini Višinska razlika med najvišjo in najnižjo oporo: 20 mm;

2. Določite postopek namestitve jeklenega okvirja glede na silo in strukturne značilnosti mreže ter dejanske pogoje gradnje na mestu;

3. Ko je jekleni prostorski okvir nameščen, ga je treba preveriti:

a.Dovoljena vrednost navpičnega in vodoravnega odstopanja dolžine stranic je 1/2000 dolžine in ne sme biti večja od 30 mm;

b.Dovoljena vrednost sredinskega zamika mora biti 1/3000 razpona jeklenega okvirja in ne sme biti večja od 30 mm;

c.Za mrežasti okvir, ki ga podpira obrobje, je dovoljeno odstopanje višine 1/400 sosednjega nosilca in ne sme biti večje od 15 mm, največja in najmanjša pa ne smeta biti večja od 30 mm;za mrežni okvir, podprt z več točkami, je dovoljeno odstopanje višine 1/800 sosednje podpore in ne sme biti večje od 30 mm;

d.Zaznajte odklon mreže v skladu s specifikacijami in konstrukcijskimi zahtevami.Po izdelavi deformacija jeklenega okvirja ne sme biti večja od 115 % projektne izračunane vrednosti.(Maksimalna vrednost upogiba mrežnega okvirja L/250)

4. Če so varilne krogle lokalno, se za varjenje varilne krogle in palice uporablja žlebno varjenje, razred varilnega šiva pa ne sme biti nižji od drugega razreda.

5. Ko je namestitev jeklenega okvirja končana, mora biti površina spojev in palic prostorskega okvirja čista in brez brazgotin in umazanije.Spoje in odvečne luknje krogličnih zgibov vijakov je treba napolniti in zatesniti z mastjo.

6. Med uporabo omrežja je treba vsakih 4 do 5 let izvajati celovito protikorozijsko vzdrževanje.

 

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.

Čas objave: 10. marec 2022