CN103669724A

CN103669724A - Steel pipe concrete column

Info

Publication number: CN103669724A
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: 2014-03-26
Anticipated expiration: 2032-08-31
Also published as: CN103669724B

Abstract

The invention discloses a steel pipe concrete column in steel structure buildings. The steel pipe concrete column is mainly composed of an outer steel pipe (1) and a concrete column (2), wherein an inner steel pipe (6) is also arranged in the outer steel pipe (1), the concrete column (2) is filled between the outer steel pipe (1) and the inner steel pipe (6) to form a hollow concrete column, and the interior of the inner steel pipe (6) is a hollow cavity (4); the top surface and the bottom surface of the concrete column (2) are higher than the top surfaces and the bottom surfaces of ring flanges (1a) on the two ends of the outer steel pipe (1), a group of uniformly distributed straight grooves penetrating through the hollow concrete column (2) are respectively arranged on the top surface and the bottom surface of the concrete column (2), and two upper and lower groups of strip-shaped connecting bars (3) are respectively embedded in the straight grooves to connect the outer steel pipe (1) and the inner steel pipe (6) into an entirety. By adopting the steel pipe concrete column disclosed by the invention, the deadweight of the concrete column is decreased and the concentricity of upper and lower layers of concrete columns (2) in a plurality layer of steel pipe concrete columns is guaranteed so as to ensure the house quality.

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, has obtained application more and more widely.In steel construction, steel pipe column is one of modal parts.The effect of post is load-bearing, and still, 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 has but increased greatly, 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 utilized the good feature of concrete compressive property, reduce again the deadweight of concrete filled steel tubular column, and can also ensure the concentricity of multilayer concrete filled steel tubular column levels concrete post, thus the quality of guarantee 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, mainly steel pipe and the concrete post being filled in steel pipe, consist of, 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 between steel pipe and interior steel pipe outside, the end face of concrete post and bottom surface exceed end face and the bottom surface of the blue dish of outer steel pipe two hold-carryings, and on it, also respectively have the straight trough of the break-through hollow concrete post of one group of equally distributed level, are a cavity in interior steel pipe.In addition, top and bottom at concrete filled steel tubular column, between the blue dish of outer steel pipe method and interior steel pipe, all have one group of strip connection strap to be embedded in each straight trough of described concrete capital face and bottom surface outer steel pipe and interior steel pipe are linked into an integrated entity, 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, in interior steel pipe, be cavity, reduced the volume of concrete post, thus the deadweight that has alleviated concrete filled steel tubular column.Because outer and inner tube links into an integrated entity, ensure the concentricity of outer and inner tube again, namely ensured the concentricity of concrete post and outer steel pipe.Multilayer concrete filled steel tubular column is interconnected by the blue dish of the method for outer steel pipe, and the concentricity that this has just ensured 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 explanation: 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.

The specific embodiment: embodiment 1 as shown in Figure 1 to Figure 3.In outer steel pipe 1, also have an interior steel pipe 6, outer steel pipe 1 is pipe with interior steel pipe 6.2, concrete post is filled between outer steel pipe 1 and interior steel pipe 6 becomes a hollow concrete post, in interior steel pipe 6, is a cavity 4, has reduced the volume of concrete post 2, thus the deadweight that has alleviated concrete filled steel tubular column.The two ends up and down of concrete post 2, top and bottom all slightly exceed end face and the bottom surface of the blue dish of 1 liang of hold-carrying of outer steel pipe 1a.Like this, the disconnection of coming to nothing in the middle of not understanding during the concrete filled steel tubular column assembly connection of the upper and lower floor in composite steel structure room.Certainly, during assembling, the end face of concrete post 2 and bottom surface must be through polishings, not only surfacing, and also surface is vertical with concrete post 2 center lines.In end face and the bottom surface of concrete post 2, respectively there is the radially 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 above-mentioned each straight trough, and interior steel pipe 6 is linked into an integrated entity with outer steel pipe 1.This connection, generally that blue the coiling between 1a inwall and interior steel pipe 6 outer walls of steel pipe 1 method is welded to connect bar 3 outside, also can be as shown in Figure 1 and Figure 2, on the blue dish of outer steel pipe 1 method 1a, have groove, corresponding breach is opened in interior steel pipe 6 tops and bottom, connection strap 3 one end are embedded in the blue dish of method 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 shown in Fig. 23 is four, certainly can be more, also can reduce, and 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.

Interior steel pipe 6 external surfaces of embodiment 1, more than being welded with 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 weldering nail 5 deciles are distributed on the radius of interior steel pipe 6, the minimum spacing of adjacent two weldering nails 5, the spacing on interior steel pipe 6 circumference is greater than the diameter of vibrating head; The every assembly welding nail 5 of adjacent each layer, not only number is identical, and the position of the horizontal section of each weldering nail 5 is corresponding one by one, upper and lower does not overlappingly misplace, so the weldering nail 5 of each layer of upper same level position is distributed on same vertical plane.As shown in Figure 1, Figure 3, embodiment 1 has 5 four layers of weldering nails, and 5 eight of the weldering nails of every layer are one group.Certainly can increase and decrease, the general number of plies is 2-10 layer, and every layer of weldering nail 5 number are 3-24.Each weldering nail 5 all interts in concrete post 2, thereby concrete post 2 is tightr with being connected 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 being connected of outer and inner tube 6,1.The weldering nail of every layer is overlapping 5 Shang Xia not to misplace, and the spacing of adjacent two weldering nails 5 is greater than the diameter of vibrating head, insertion and extract vibrating head while being conducive to build 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 are same or similar, no longer repeat.

Claims

1. a concrete filled steel tubular column, mainly by steel pipe and the concrete post being filled in steel pipe, formed, it is characterized in that: described steel pipe, in outer steel pipe (1), also has an interior steel pipe (6), described concrete post, being that concrete post (2) is filled between outer steel pipe (1) and interior steel pipe (6) and 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 the outer steel pipe blue dish of (1) two hold-carrying (1a), on 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), top and bottom at concrete filled steel tubular column, between the blue dish of outer steel pipe (1) method (1a) and interior steel pipe (6), all have one group of strip connection strap (3) to be embedded in above-mentioned each straight trough outer steel pipe (1) and interior steel pipe (6) are linked into an integrated entity, and the surface of concrete filled steel tubular column two ends connection straps (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 a plurality of spike weldering nails (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 weldering nails (5) is greater than the diameter of vibrating head; Not only number is identical for every layer of weldering nail (5), and the horizontal level of each weldering nail (5) is also corresponding identical one by one, i.e. upper and lower overlapping being distributed on same vertical plane of the weldering of each layer of same level position nail (5); Each weldering nail (5) all interts in concrete post (2).