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Prughjetti

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Steel space grid gas station project construction

Stu prughjettu hè un quadru spaziu quadratu / altezza 16 metri / lunghezza totale 30 metri / span totale 18 metri

1. A stallazione di u quadru di u spaziu azzaru deve esse realizatu dopu à l'accettazione di l'assi di a struttura più bassa è u bordu incrustatu.I requisiti per u sustegnu più bassu sò: a diffarenza di l'altitudine trà i supporti adiacenti (distanza L2): u valore più chjucu di L2 / 800 è 10mm, à a listessa elevazione Differenza di l'altezza trà u supportu più altu è più bassu: 20mm;

2. Determinà u prucessu di stallazione di u quadru di u spaziu azzaru secondu a forza è e caratteristiche strutturali di a griglia è e cundizioni di custruzzione attuale in u situ;

3. Dopu chì u quadru di u spaziu in acciaio hè stallatu, deve esse verificatu:

a.U valore permissibile di a deviazione di a lunghezza laterale verticale è horizontale hè 1/2000 di a lunghezza, è ùn deve esse più grande di 30 mm;

b.U valore permissibile di u centru offset deve esse 1/3000 di u span di u quadru di u spaziu azzaru, è ùn deve esse più grande di 30mm;

c.Per u quadru di maglia sustinutu da a periferia, a deviazione di l'altitudine permessa hè 1/400 di u supportu adiacente, è ùn deve esse più grande di 15 mm, è u massimu è u minimu ùn deve esse più di 30 mm;per u quadru di maglia sustinutu da parechji punti, a deviazione di l'altezza permessa hè 1/800 di u supportu adiacente, è ùn deve esse più di 30 mm;

d.Detectà a deviazione di a griglia secondu e specificazioni è i requisiti di cuncepimentu.Dopu à a custruzzione, a deviazione di u quadru di u spaziu in acciaio ùn deve esse più di 115% di u valore di calculu di u disignu.(Valeur de déflexion maximale du cadre de grille L/250)

4. Se ci sò sfere di saldatura in u locu, a saldatura di groove hè utilizata per saldarà a bola di saldatura è a verga, è a qualità di saldatura ùn deve esse più bassa di u sicondu gradu.

5. Dopu à a stallazione di u quadru di u spaziu di l'azzaru hè cumpletu, a superficia di l'articuli di u quadru di u spaziu è i verge deve esse pulita è libera di cicatrici è terra.L'articuli è i buchi eccessivi di e articuli di bola di bolt deve esse chinu è sigillati cù grassu.

6. Durante l'usu di a griglia, u mantenimentu anti-corrosione cumpleta deve esse realizatu ogni 4 à 5 anni.

 

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.

Tempu di Postu: Mar-10-2022