Steel structure workshop mainly means that the main load-bearing components are made of steel. Bian Xiao has compiled relevant information, and the basic contents of the quotation for steel structure workshop are as follows:
First of all, let's take a look at the general basic market. The basic introduction is as follows:
According to the tonnage quotation, the basic quotation principle is material cost (market steel price)+processing cost (ranging from 800- 1200, depending on the strength of the manufacturer)+freight (50 in the city, calculated separately outside the city) and so on. If there is special antirust treatment, the cost will be calculated separately. The installation cost of color plates is generally around 300~500, which is usually bolt construction.
Basic characteristics of quotation for steel structure workshop;
(1) Using light roof can not only reduce the cross-section size of beams and columns, but also reduce the foundation accordingly.
(2) In multi-span buildings, it can be made into a large double slope roof with a roof ridge, which creates conditions for long slope drainage.
The central column can reduce the span of the beam, thus reducing the cost. The middle column is a steel pipe swing column hinged up and down, which occupies a small space.
(3) The angle brace of purlin ensures the lateral rigidity, omits the longitudinal rigid members and reduces the flange width.
(4) The steel frame can adopt variable cross-section, and the cross-section is proportional to the bending moment; When changing the cross section, the height and thickness of the web and the width of the flange can be changed as needed to make full use of the material.
(5) The webs of steel frames can be designed according to the effective width, that is, some webs are allowed to lose stability, and their post-buckling strength can be utilized. Therefore, the ratio of height to thickness of web can be greater than that stipulated in Code for Design of Steel Structures (GB500 17), and the thickness of web can be reduced.
(6) The vertical load is usually the design control load, but when the wind load is large or the building is high, the effect of the wind load should not be ignored. In light-weight portal frames, earthquake action generally has no control function.
(7) Support can be made lighter. Can be directly connected with the web, can also be connected with horizontal gusset plates, and can also be connected with tension round steel.
(8) All structural members can be manufactured in factories, with high degree of industrialization. The component units can be divided according to the transportation conditions, and the units are connected by bolts on site, which is convenient and quick to install and requires little civil construction.
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