900x25 Steel Beams And Columns

Zexu supplies 900*25 steel pipe columns for bridge support steel pipe columns for sale

The steel pipe columns, steel pipe piles and pre-embedded piles produced by our company are delivered in time and have good load-bearing performance. They can effectively reduce the volume of the concrete column at the place where the force is larger, and play the role of load-bearing and force transmission. The steel pipe column is mainly composed of steel pipe, bottom flange, top flange, stiffener plate, and studs. The weld must be penetrated. The materials are mostly Q235B and Q345B.
Fundamental technical development and dimensions of steel pipe columns
The structural requirements for steel pipe column stiffeners mainly include calculated size, load calculation, flat steel height, stiffener thickness, stiffener type, stiffeners should be arranged in pairs on both sides of the web, stiffeners can be steel or section steel, horizontal The small spacing of stiffeners, stiffeners should have sufficient rigidity, etc.
1. Calculate the size
The height of the ribs is taken 1/15-1/12 of the span, that is 67-83mm, the steel plate is 80×6mm, and the steel is q235. The stiffener and the plank adopt single-sided fillet welds, the weld angle size is 6mm, and the weld length is 50mm after each 150mm length.
This connection structure satisfies the condition that the plank and the stiffener are calculated as a whole. The calculated cross section of the stiffener is the t-shaped cross section shown in the figure, the calculated width of the paving is 30t=240mm, and the span is 1m.
2. Load calculation
The design load distributed on a T-shaped cross-section simply supported stiffener should be a load within the range of 1000mm, and the self-weight of the stiffener is 0.08×0.006×78.5=0.038kn/m, which is considered as a uniform load.
Standard value of uniform load: qk=4.655x1+0.038=4.693KN/m
Uniform load design value: qk=6.386*1+1.2*0.038=6.432KN/m
3. fy is the yield point of the steel, and the height of the flat steel of the stiffener is only related to the material. To
4. The thickness of the stiffener is in accordance with the requirements of the steel structure specification for the bending member. ts>=bs/15 bs is the extension width of the stiffener. To
5. Stiffeners can be divided into two types according to their functions: one is to divide the web into several sections to improve the local stability of the web, called interval stiffeners; the other is in addition to the above functions , There is also the role of transferring fixed concentrated load or supporting reaction force, called supporting stiffener. To

6. ​​The stiffeners should be arranged in pairs on both sides of the web, and single-sided configuration is also allowed, but the stiffeners supporting the stiffeners and heavy duty crane beams should not be arranged on one side.
7. The stiffener can be steel plate or section steel. To
8. The small spacing of transverse stiffeners is 0.5h0, and the spacing is 2 h0 (for beams without local compressive stress, 2.5h0 can be used when h0 / tw≤100). To
9. The stiffener should have enough rigidity to make it the immobile support of the web.