CN103669724B

CN103669724B - Concrete filled steel tubular column

Info

Publication number: CN103669724B
Application number: CN201210321217.3A
Authority: CN
Inventors: 江忠良
Original assignee: ZHEJIANG JIANGXIN STEEL GRID TRUSS Co Ltd
Current assignee: ZHIFANG TECHNOLOGY CO., LTD.
Priority date: 2012-08-31
Filing date: 2012-08-31
Publication date: 2015-11-25
Anticipated expiration: 2032-08-31
Also published as: CN103669724A

Abstract

The invention discloses the concrete filled steel tubular column in a kind of steel construction, form primarily of outer steel pipe (1) and concrete post (2), an interior steel pipe (6) is also had in outer steel pipe (1), concrete post (2) is filled between outer steel pipe (1) and interior steel pipe (6) becomes a hollow concrete post, is a cavity (4) in interior steel pipe (6).The end face of concrete post (2) and bottom surface all exceed end face and the bottom surface of outer steel pipe (1) two hold-carrying indigo plant dish (1a), concrete post (2) end face and bottom surface all have the straight trough of one group of equally distributed break-through hollow concrete post (2), each one group of strip connection strap (3) is embedded in each straight trough above-mentioned and outer steel pipe (1) and interior steel pipe (6) is linked into an integrated entity up and down.The present invention reduces the deadweight of concrete filled steel tubular column, and ensured the concentricity of multilayer concrete filled steel tubular column levels concrete post (2), thus ensure the quality in house.

Description

Concrete filled steel tubular column

Technical field: the present invention relates to the concrete filled steel tubular column in steel construction.

Background technology: steel construction is due to easy construction, and the speed that builds a house is fast, and building waste is few, obtains and applies more and more widely.In steel construction, steel pipe column is one of modal parts.The effect of post is load-bearing, but the anti-pressure ability of steel is less than concrete, and therefore, the steel pipe column of filling concrete in steel pipe comes into one's own., the deadweight of this concrete filled steel tubular column but considerably increases, and for the steel construction of multilayer, this problem is particularly outstanding.

Summary of the invention: the object of this invention is to provide a kind of concrete filled steel tubular column, both make use of the feature that concrete compressive property is good, additionally reduce the deadweight of concrete filled steel tubular column, and the concentricity of multilayer concrete filled steel tubular column levels concrete post can also be ensured, thus ensure the quality of multi-storey steel structure building.

For this reason, the technical solution that the present invention proposes is, a kind of concrete filled steel tubular column, form primarily of steel pipe and the concrete post be filled in steel pipe, described steel pipe is outer steel pipe, also has an interior steel pipe in outer steel pipe, described concrete column filling becomes a hollow concrete post outside between steel pipe and interior steel pipe, the end face of concrete post and bottom surface exceed end face and the bottom surface of outer steel pipe two hold-carrying indigo plant dish, and it also respectively have the straight trough of the break-through hollow concrete post of one group of equally distributed level, are then a cavity in interior steel pipe.In addition, in top and the bottom of concrete filled steel tubular column, between outer steel pipe method indigo plant dish and interior steel pipe, in each straight trough all having one group of strip connection strap to be embedded in described concrete capital face and bottom surface by outer steel pipe and interior fastener for connection integral, and the end face of each connection strap or bottom surface are also all lower than end face and the bottom surface of concrete post.

Therefore concrete post of the present invention plays load-bearing effect, gives full play to the feature that its compressive property is good, be cavity in interior steel pipe, decrease the volume of concrete post, thus alleviate the deadweight of concrete filled steel tubular column.Again because outer and inner tube links into an integrated entity, ensure the concentricity of outer and inner tube, namely ensured the concentricity of concrete post and outer steel pipe.Multilayer concrete filled steel tubular column is interconnected by the method indigo plant dish of outer steel pipe, and this has just ensured the concentricity of multilayer concrete filled steel tubular column levels concrete post, has also just ensured the quality in house.

Below in conjunction with drawings and Examples, the present invention is further illustrated.

Accompanying drawing illustrates: Fig. 1 is the main TV structure schematic diagram of embodiment 1, embodiment 2;

Fig. 2 is the top view of Fig. 1 of embodiment 1;

Fig. 3 is the A-A sectional drawing of Fig. 1 of embodiment 1;

Fig. 4 is the top view of Fig. 1 of embodiment 2;

Fig. 5 is the A-A sectional drawing of Fig. 1 of embodiment 2.

Detailed description of the invention: embodiment 1 as shown in Figure 1 to Figure 3.Also have an interior steel pipe 6 in outer steel pipe 1, outer steel pipe 1 is pipe with interior steel pipe 6.2, concrete post is filled in become a hollow concrete post between outer steel pipe 1 and interior steel pipe 6, be a cavity 4, decrease the volume of concrete post 2, thus alleviate the deadweight of concrete filled steel tubular column in interior steel pipe 6.The two ends up and down of concrete post 2, namely top and bottom all slightly exceed end face and the bottom surface of outer steel pipe 1 liang of hold-carrying indigo plant dish 1a.Like this, during the concrete filled steel tubular column assembly connection of the upper and lower floor in composite steel structure room can not in the middle of to come to nothing disconnection.Certainly, during assembling, the end face of concrete post 2 and bottom surface must through polishings, not only surfacing, and surface and concrete post 2 central axis.In end face and the bottom surface of concrete post 2, respectively there is the radial straight trough of the break-through hollow concrete post 2 of one group of equally distributed level.One group of strip connection strap 3 is embedded in each straight trough above-mentioned, is linked into an integrated entity by interior steel pipe 6 with outer steel pipe 1.This connection, generally be welded to connect bar 3 between steel pipe 1 method indigo plant dish 1a inwall and interior steel pipe 6 outer wall outside, also can be as shown in Figure 1 and Figure 2, outer steel pipe 1 method indigo plant dish 1a has groove, corresponding breach is opened in interior steel pipe 6 top and bottom, connection strap 3 one end is embedded in method indigo plant dish 1a groove, and the other end is embedded on the breach of interior steel pipe 6, is then weldingly connected.Outer and inner tube 6,1 links into an integrated entity, and can ensure the concentricity of outer and inner tube 6,1, has also just ensured the concentricity of multilayer concrete filled steel tubular column levels concrete post 2.Connection strap 3 shown in Fig. 2 is four, certainly can be more, also can reduce, be generally 3-8 bar.In addition, no matter be top or the connection strap of bottom 3, their end face or bottom surface are also lower than end face or the bottom surface of concrete post 2.

Steel pipe 6 external surface in embodiment 1, be welded with more than one deck of contour distribution, every layer has one group of equally distributed spike weldering nail 5 on horizontal section, each weldering nail 5 is vertical with surface, place, namely welding nail 5 decile is distributed on the radius of interior steel pipe 6, the minimum spacing of adjacent two weldering nails 5, namely, steel pipe 6 spacing is circumferentially greater than the diameter of vibrating head; Every assembly welding nail 5 of neighboring layers, not only number is identical, and the position one_to_one corresponding of the horizontal section of each weldering nail 5, and upper and lower overlap does not misplace, so the weldering nail 5 of same level position is distributed on same vertical plane on each layer.As shown in Figure 1, Figure 3, embodiment 1 has weldering nail 5 four layers, and it is one group that the weldering of every layer follows closely 5 eight.Certainly can increase and decrease, the general number of plies is 2-10 layer, and every layer of weldering nail 5 number is 3-24.Each weldering nail 5 all interts in concrete post 2, and thus concrete post 2 is tightr with the connection of interior steel pipe 6.Because interior steel pipe 6 links into an integrated entity with outer steel pipe 1, so in fact concrete post 2 is all tight with the connection of outer and inner tube 6,1.Weldering nail about 5 overlaps of every layer do not misplace, and the spacing of adjacent two weldering nails 5 is greater than the diameter of vibrating head, inserts and extract vibrating head when being conducive to building concrete.

Embodiment 2 as shown in Figure 1, Figure 4, Figure 5.The outer steel pipe 1 of embodiment 2, interior steel pipe 6 are all square tubes.Other guide and embodiment 1 same or similar, no longer repeat.

Claims

1. a concrete filled steel tubular column, form primarily of steel pipe and the concrete post be filled in steel pipe, it is characterized in that: described steel pipe, namely an interior steel pipe (6) is also had in outer steel pipe (1), described concrete post, namely concrete post (2) is filled between outer steel pipe (1) and interior steel pipe (6) becomes a hollow concrete post, is a cavity (4) in interior steel pipe (6), the end face of concrete post (2) and bottom surface all exceed end face and the bottom surface of outer steel pipe (1) two hold-carrying indigo plant dish (1a), concrete post (2) end face and bottom surface all there is the horizontal straight trough of one group of equally distributed break-through hollow concrete post (2), in top and the bottom of concrete filled steel tubular column, between outer steel pipe (1) method indigo plant dish (1a) and interior steel pipe (6), all have one group of strip connection strap (3) to be embedded in each straight trough above-mentioned outer steel pipe (1) and interior steel pipe (6) are linked into an integrated entity, and the surface at concrete filled steel tubular column two ends connection strap (3) is all lower than end face or the bottom surface of concrete post (2).

2. concrete filled steel tubular column according to claim 1, it is characterized in that: on interior steel pipe (6) external surface, layering is welded with multiple spike weldering nail (5), every layer of weldering nail (5) is uniformly distributed on horizontal section, each weldering nail (5) is vertical with surface, place, and the minimum spacing of adjacent two welderings nail (5) is greater than the diameter of vibrating head; (5) not only number is identical for every layer of weldering nail, and the horizontal level of each weldering nail (5) also one_to_one corresponding is identical, namely weldering nail (5) of each layer same level position up and down overlap be distributed on same vertical plane; Each weldering nail (5) is all interted in concrete post (2).