integral three-dimensional warehouse shelf design points

the skill link of the overall plane hotel is the shelf system, its assumption is based on the important body. In terms of the shelf, the stress explanation and calculation of the shelf are the key points of this skill. It is important to start from the following aspects:

1. Force constant load: constant load refers to the self-weight of the shelf itself, adjacent to C- shaped steel and the weight of the frame, purlin, frame, roof panel and wall panel.

two. Live load: live load refers to the quantity of goods and pallets placed on the shelf, as well as the snow (rain) load on the roof.

3. Vertical invasion load: refers to the invasion load generated when the stacker stores the goods.

4. Wind load: it is the focus of the force calculation of the overall plane hotel. Individually, the investors of the overall flat hotel are thus fair and ineffective in the use of space to start, so that the overall flat hotel is higher in height and the individual. Aspect ratio: L (height) = 1.5-two W (width), so that the hotel is under wind load insurance is a major indicator. The calculation of the influence of wind load on the shelf column will be realized through the process steel tissue force calculation software, and at the same time, the system force simulation and theoretical calculation will be adopted for review.

5. Seismic crack: according to the GBJ11-89 "production of seismic assumption scale" implementation, individual take seismic crack withdrawal grade is 7.

Shelf organization should be based on the load effect of the above list of the most back-to-back combination of ideas. When envisaging the shelf organization of the overall flat hotel, special attention should be paid to the combination of the following two kinds of loads: the stress under the no-load condition of the whole warehouse when the wind load starts and lasts; The degree of action lasts the stress under the full load of the whole warehouse. In addition, we should give sufficient thought to the distribution of hotel goods, that is, when the hotel is fully loaded on one side and empty on the other side, the stress explanation of the hotel root. Try to have the hotel's goods distribution and storage theory; As far as possible, the distribution and storage of the regular goods in the hotel is as average as possible in the application analysis of the hotel, but we must think about the worst possibility when we are imagining the timing.

shelf type is also a very important part of the overall spontaneous hotel. The shelves are divided into general welding shelves and assembled shelves according to their organizational type. According to the standard rules, the minimum vertical error of the column of the assembled shelf should not be less than 1/20 of the full height, while the vertical error of the column of the integrated total shelf is not less than 1/1000 of the full height, and the vertical relative error value is not less than 10 sisters, so it can be seen that the processing and installation accuracy of the total shelf is higher than that of the combined shelf. The overall type of spontaneous hotel shelf type selection depends on the calculation of various types of load, depending on the size of the hotel. Because there is little certainty that the assembled shelves are being installed and constructed, the overall welded shelves are often adopted in the overall hotel.

There is no square tube, rectangular tube, channel steel and other data for the column material selection of the overall welded shelf. According to the characteristics and indexes of the profile itself, it is better to choose square tube. For taller hotels, it is also common for columns to choose variable cross-section and divergent wall thickness performance.

The welding of the overall welding shelf shall be carried out in the tooling line, and the tooling shall be verified. After the shelf pieces are entering the site, they shall also be assembled in the tooling line to ensure various accuracies.