CN101311478B

CN101311478B - Steel column foot reinforced structure

Info

Publication number: CN101311478B
Application number: CN2007102007096A
Authority: CN
Inventors: 常建华
Original assignee: Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
Current assignee: Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
Priority date: 2007-05-25
Filing date: 2007-05-25
Publication date: 2010-08-04
Anticipated expiration: 2027-05-25
Also published as: CN101311478A

Abstract

The invention discloses a steel column base reinforcement structure which includes a steel column (1), a side stiffening rib plate (2), a middle stiffening rib plate (3), a column base bottom plate (4) and a column base bolt (7). The invention is characterized in that anchor reinforcing steel bars (6) are welded with the steel column (1) and the side stiffening rib plate (2); a rigid crossbeam (8) is welded with the edge of the column limb wing of the steel column (1); concrete (5) is cast in the intercolumnar range of the steel column (1). The concrete (5) is 100mm higher than the top part of the rigid crossbeam (8). The space between the anchor reinforcing steel bars (6) is 150mm; the diameters of the anchor reinforcing steel bars (6) are 16mm to 20mm. The grade of the concrete (5) is higher than C20. The height of the rigid crossbeam (8) is arranged above the top part of the side stiffening rib plate (2). The invention can effectively realize the reinforcement for the column base bottom plate and reduces the deformation of the bottom plate caused by the welding stress of the traditional reinforcing mode; besides, the steel column base reinforcement structure is simple and easy to be implemented and has strong operability.

Description

Steel column foot reinforced structure

Technical field

The present invention relates to a kind of steel column foot reinforced structure of steel building, use this invention can realize the reinforcing of coupled columns sole simply and effectively.

Background technology

Steel building is because its quick construction, build is light and handy, be applied in the building structure in recent years increasingly extensively, particularly be applied in the factory building structure more, and as the member of the final power transmission of steel structure system, the safety of steel column foot just more seems particularly important, sometimes because design, artificial deviation appears in the construction, or the construction finish after building increased extra load again, and when finding these problems, steel column foot has often been constructed and has been finished, this moment is because suspension column base plate thickness deficiency, its insufficient rigidity is with the bending moment of opposing on the base plate, the base plate distortion that just can be distorted this moment, even destroy, threaten the safety of total, at this moment just must carry out consolidation process suspension column.For the not enough reinforcement measure of suspension column base plate thickness, usually all be on original base plate, to set up the suspension column floor of putting more energy into, reduce the span of base plate with this, thereby reduce the suffered bending moment of base plate, but this method is often because the size of suspension column own is less, or the existing floor of putting more energy into is very close and cause in the construction welding very difficult, brings great difficulty for the construction reinforcement, is not easy to implement.

Fig. 1, Figure 2 shows that the suspension column full-page proof of traditional steel work, steel column (1) is made up of two i shaped steels, side put more energy into floor (2) and intermediate stiffener plate (3) are arranged on suspension column base plate (4), and suspension column base plate (4) and the side floor (2) of putting more energy into also is connected by suspension column bolt (7).When running into the base plate thickness deficiency and need reinforcement,, promptly increase the base plate number of ribs of putting more energy into if adopt traditional reinforcement means.As can be seen from the figure, because floor is overstocked, during construction, the floor that welds these increases can be very difficult, and in addition owing to the length that increases weld seam is very long, also easy the generation than big welding stress causes bottom deformation.

Summary of the invention

The technical problem to be solved in the present invention is: at the weak point of traditional reinforcement measure when solution suspension column base plate thickness is not enough, propose a kind of new steel column foot reinforced structure, can more simply and effectively be reinforced base plate.

The present invention constitutes like this: it comprises steel column (1), side put more energy into floor (2), intermediate stiffener plate (3), suspension column base plate (4), suspension column bolt (7), anchor draws floor (2) welding of putting more energy into of reinforcing bar (6) and steel column (1) and side, rigid beam (8) welds concreting (5) in the intercolumniation scope of steel column (1) with the post limb edge of a wing of steel column (1).

The height of concrete (5) should exceed rigid beam (8) top 100mm.

It is 150mm that anchor draws the spacing of reinforcing bar (6), and diameter is 16mm～20mm.

The grade of concrete (5) is higher than C20.

The height of rigid beam (8) is on side is put more energy into floor (2) top.

The concrete that anchor draws reinforcing bar (6) to increase greatly to newly establish and the adhesion stress of suspension column, thus make concrete and suspension column base plate form one; On the post limb edge of a wing, add weldering rigid beam (8), make the rest of rigid beam, strengthened adhesion strength, guarantee that it is enough to transmit the base plate counter-force as concret block near suspension column; The concrete of building (5) makes anchor draw reinforcing bar (6), rigid beam each several parts such as (8) to form one and resists the suspension column bending moment jointly, has increased base plate rigidity greatly, has played good consolidation effect.The difficulty that has been occurred in the construction when the present invention has avoided adopting traditional reinforcing mode has also reduced the bottom deformation that welding stress that traditional reinforcing mode causes to base plate causes, and simple and easy to do, and operability is very strong.

Description of drawings

Fig. 1 is traditional steel column pin schematic diagram, vertical view;

Fig. 2 analyses and observe, rotates schematic diagram for the A Abandon among Fig. 1;

Fig. 3 is structural representation of the present invention, vertical view;

Fig. 4 analyses and observe, rotates schematic diagram for the B Fen among Fig. 3.

The specific embodiment

Embodiments of the invention: as shown in Figure 3, Figure 4, can carry out as follows when adopting reinforced column sole of the present invention:

The first, the paint and the iron rust of steel surface in the suspension column scope of steel column 1 are thoroughly removed totally, can add the adhesion stress of reinforced concrete and suspension column like this;

Second, in the suspension column scope of steel column 1, on post, add the weldering anchor and draw reinforcing bar 6 in the mode of plum blossom profile, the spacing of dowel is 150mm, and diameter is 16～20mm, for increasing adhesion stress, dowel should adopt figuratum II grade reinforcing steel, the length of dowel is 20d, and d is the dowel diameter, when failing to lay down greater than the suspension column width as if this length, can be bent growing part, be made the dowel that an end has crotch;

The 3rd, between two i shaped steels of post, set up rigid beam 8, have enough rigidity, unlikelyly under load action, deform for guaranteeing this crossbeam, its cross section should be enough big, general crossbeam height is taken as 0.4L, and L is the spacing of steel column two i shaped steels, and is not less than [18a, this rigid beam 8 adopts three weld all arounds with the suspension column frange plate of steel column 1, the length of rigid beam 8 is L-20mm, leaves certain slit like this between crossbeam and the post, is convenient to insert and construct;

The 4th, build pea gravel concreten 5 in the suspension column spatial dimension, concrete grade is more than C20, and the height of young concrete should exceed rigid beam 8 top 100mm, the concrete of this 100mm both can be used as the protective layer thickness of crossbeam, can further strengthen the adhesion stress with post again;

The 5th, increase the compactness of young concrete by vibrating repeatedly, to guarantee dowel and rigid beam and concrete parcel closely, with the base plate co-operation.

Claims

1. steel column foot reinforced structure, it comprises steel column (1), side put more energy into floor (2), intermediate stiffener plate (3), suspension column base plate (4), suspension column bolt (7), it is characterized in that: anchor draws floor (2) welding of putting more energy into of reinforcing bar (6) and steel column (1) and side, rigid beam (8) welds the concrete (5) of building with the post limb edge of a wing of steel column (1) in the intercolumniation scope of steel column (1).

2. steel column foot reinforced structure according to claim 1 is characterized in that: the height of concrete (5) exceeds rigid beam (8) top 100mm.

3. steel column foot reinforced structure according to claim 1 is characterized in that: it is 150mm that anchor draws the spacing of reinforcing bar (6), and diameter is 16mm～20mm.

4. steel column foot reinforced structure according to claim 1 is characterized in that: the grade of concrete (5) is higher than C20.

5. steel column foot reinforced structure according to claim 1 is characterized in that: the height of rigid beam (8) is on side is put more energy into floor (2) top.