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Steel space grid gas station project construction

Este proyecto es un marco espacial cuadrado / altura 16 metros / longitud total 30 metros / luz total 18 metros

1. La instalación del marco espacial de acero debe realizarse después de la aceptación del eje de la estructura inferior y el tablero empotrado.Los requisitos para el soporte inferior son: la diferencia de altura entre soportes adyacentes (distancia L2): el valor menor de L2/800 y 10 mm, a la misma altura Diferencia de altura entre el soporte más alto y el más bajo: 20 mm;

2. Determinar el proceso de instalación de la estructura espacial de acero de acuerdo con la fuerza y ​​las características estructurales de la rejilla y las condiciones reales de construcción en el sitio;

3. Después de instalar el marco espacial de acero, se debe verificar:

una.El valor permitido de la desviación de la longitud lateral vertical y horizontal es 1/2000 de la longitud y no debe ser superior a 30 mm;

b.El valor permisible del desplazamiento central debe ser 1/3000 del tramo del marco espacial de acero, y no debe ser superior a 30 mm;

C.Para el marco de malla soportado por la periferia, la desviación de altura permitida es 1/400 del soporte adyacente, y no debe ser mayor a 15 mm, y el máximo y el mínimo no deben ser mayores a 30 mm;para el marco de malla soportado por varios puntos, la desviación de altura permitida es 1/800 del soporte adyacente y no debe ser superior a 30 mm;

d.Detectar la desviación de la rejilla de acuerdo con las especificaciones y requisitos de diseño.Después de la construcción, la deflexión de la estructura espacial de acero no deberá ser superior al 115 % del valor de cálculo de diseño.(Valor máximo de deflexión del marco de rejilla L/250)

4. Si hay bolas de soldadura localmente, se usa soldadura de ranura para soldar la bola de soldadura y la varilla, y el grado de la costura de soldadura no debe ser inferior al segundo grado.

5. Después de completar la instalación de la estructura espacial de acero, la superficie de las juntas y varillas de la estructura espacial debe estar limpia y libre de cicatrices y suciedad.Las juntas y los orificios sobrantes de las rótulas de los pernos deben rellenarse y sellarse con grasa.

6. Durante el uso de la rejilla, se debe realizar un mantenimiento integral anticorrosión cada 4 a 5 años.

 

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.

Hora de publicación: 10-mar-2022