2. The common dimensions of medium-sized shelf beams in shelf beam warehouse are 60*40* 1.5mm, 50 * 30 * 1.5 mm and 80 * 50 *1.5mm. When designing the dimensions of shelf beams, if the cutting length of beams is longer, the bearing capacity will be smaller. Please refer to the beam bearing table of Nanjing Sude Shelf Factory for specific beam bearing.
3. Shelf laminate The warehouse shelf laminate is processed into a C-shape, and the bottom is provided with reinforcing ribs. It is often said that the bearing capacity of the shelf does not mean that the thicker the laminate is, the heavier it will be, but also depends on the form and quantity of reinforcing ribs. The processed shelf laminate is directly placed on the shelf beam for use.
Design principles of storage rack:
1. This specification adopts the limit state design method based on probability theory, and adopts the design expression of partial coefficients for calculation.
Second, the load-bearing components of the shelf structure should be designed according to the limit state of bearing capacity and the limit state of normal use, and the non-load-bearing components should be set according to the structural requirements.
Three, the general safety level of the shelf structure can be three, and the safety level of the shelf structure with special requirements can be determined separately according to the specific situation.
4. When designing the shelf structure according to the limit state of bearing capacity, the load design value and strength design value should be adopted; When calculating the shelf structure designed according to the normal service limit state, the load standard value and allowable deformation should be used for calculation.
5. Unless otherwise specified in this specification, the values of load standard value, load subentry coefficient, load combination value coefficient and load effect combination used to calculate the connection between structural members and shelves shall comply with the provisions of Load Code for Building Structures (GBJ9-87); The internal force and deformation of the structure can be determined by structural mechanics method; The selection of cross section shall comply with the Code for Design of Steel Structures (GBJ 17-88) or (and) Technical Code for Cold-formed Thin-walled Steel Structures (GBJ 18-87).
Six, when designing a special type of assembled shelf structure, if there is no suitable calculation method available, the model or full-scale test can be carried out according to the method listed in Chapter 8 of this specification to determine the relevant parameters and bearing capacity.