CN202787664U

CN202787664U - Concrete filled steel tubular column

Info

Publication number: CN202787664U
Application number: CN 201220444481
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: 2013-03-13
Anticipated expiration: 2022-08-31

Abstract

The utility model discloses a concrete filled steel tubular column used in a steel structure building. The concrete filled steel tubular column mainly comprises an outer steel tube (1) and a concrete column (2), wherein an inner steel tube (6) is further arranged in the outer steel tube (1); the concrete column (2) is filled between the outer steel tube (1) and the inner steel tube (6) to form a hollow concrete column; a hollow cavity (4) is formed in the inner steel tube (6); the top surface and the bottom surface of the concrete column (2) are both higher than the top surfaces and the bottom surfaces of flange plates (1a) at the two ends of the outer steel tube (1); two groups of straight grooves passing through the hollow concrete column (2) are respectively evenly formed on the top surface and the bottom surface of the concrete column (2); and an upper group of strip-shaped connecting strips (3) and a lower group of strip-shaped connecting strips (3) are embedded in the straight grooves to connect the outer steel tube (1) and the inner steel tube (6) to a whole. The concrete filled steel tubular column has the advantages that the dead weight of the concrete filled steel tubular column is reduced and the concentricity of the upper layer and the lower layer of the concrete column (2) of the multi-layer concrete filled steel tubular column is guaranteed, thereby guaranteeing the quality of houses.

Description

Concrete filled steel tubular column

Technical field: the utility model relates to the concrete filled steel tubular column in the steel construction.

Background technology: steel construction is owing to easy construction, and the speed that builds a house is fast, and building waste is few, has obtained using 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.

The utility model content: the purpose of this utility model provides a kind of concrete filled steel tubular column, the good characteristics of concrete compressive property had both been utilized, 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 utility model proposes is, a kind of concrete filled steel tubular column, mainly be made of steel pipe and the concrete post that is filled in the steel pipe, described steel pipe is outer steel pipe, also has an interior steel pipe in the outer steel pipe, described concrete column filling becomes a hollow concrete post between steel pipe and the interior steel pipe outside, the end face of concrete post and bottom surface exceed end face and the bottom surface of outer steel pipe two ends flange, and the straight trough of the break-through hollow concrete post of one group of equally distributed level is also respectively arranged on it, then are a cavity in the interior steel pipe.In addition, top and bottom at concrete filled steel tubular column, between outer steel pipe flange dish and the 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 also all are lower than end face and the bottom surface of concrete post.

Therefore concrete post of the present utility model plays the load-bearing effect, gives full play to the good characteristics of its compressive property, is cavity in the interior steel pipe, has 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.The multilayer concrete filled steel tubular column is interconnected by the flange of 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 utility model is further described.

Description of drawings: 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.Also have an interior steel pipe 6 in the outer steel pipe 1, outer steel pipe 1 is pipe with interior steel pipe 6.2 on concrete post is filled in becomes a hollow concrete post between outer steel pipe 1 and the interior steel pipe 6, be a cavity 4 in the interior steel pipe 6, has reduced the volume of concrete post 2, thus the deadweight that has alleviated concrete filled steel tubular column.The up and down two ends of concrete post 2, namely top and bottom all slightly exceed end face and the bottom surface of outer steel pipe 1 two ends flange 1a.Like this, the disconnection of coming to nothing in the middle of composite steel structure room is not understood during the concrete filled steel tubular column assembly connection of floor up and down.Certainly, the end face of concrete post 2 and bottom surface must be through polishings during assembling, not only surfacing, and also the surface is vertical with concrete post 2 center lines.In end face and the bottom surface of concrete post 2, the radially straight trough of the break-through hollow concrete post 2 of one group of equally distributed level is arranged respectively.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 be to be welded to connect bar 3 between steel pipe 1 flange 1a inwall and interior steel pipe 6 outer walls outside, also can be as shown in Figure 1 and Figure 2, have groove on the outer steel pipe 1 flange 1a, corresponding breach is opened in interior steel pipe 6 tops and bottom, connection strap 3 one ends are embedded in the flange 1a groove, and the other end is embedded on the breach of interior steel pipe 6, then is weldingly connected.Outer and

inner tube

6,1 links into an integrated entity, and can ensure outer and

inner tube

6,1 concentricity, has also just ensured the concentricity of multilayer concrete filled steel tubular column levels concrete post 2.Connection strap 3 shown in Figure 2 is four, certainly can be more, also can reduce, and be generally the 3-8 bar.In addition, no matter be top or the connection strap of bottom 3, their end face or bottom surface also are lower than end face or the bottom surface of concrete post 2.

Embodiment 1 interior steel pipe 6 external surfaces, be welded with more than one deck of contour distribution, every layer has one group of equally distributed spike weldering nail 5 on the horizontal section, each weldering nail 5 and place Surface Vertical, namely weldering nail 5 five equilibriums are distributed on the radius of interior steel pipe 6, the minimum spacing of adjacent two weldering nails 5, namely 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, does not overlappingly up and down misplace, so the weldering nail 5 of the upper same level position of each layer is distributed on the same vertical plane.Such as Fig. 1, shown in Figure 3, embodiment 1 has 5 four layers of weldering nails, and it is one group that every layer weldering is followed closely 5 eight.Certainly can increase and decrease, the general number of plies is the 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, thus in fact concrete post 2 and outer and

inner tube

6,1 be connected all tight.Every layer weldering nail is overlapping about in the of 5 not to misplace, and the spacing of adjacent two weldering nails 5 inserts and extract vibrating head greater than the diameter of vibrating head when being conducive to build concrete.

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

Claims

1. concrete filled steel tubular column, mainly consisted of by steel pipe and the concrete post that is filled in the steel pipe, it is characterized in that: described steel pipe, namely also has an interior steel pipe (6) in the outer steel pipe (1), described concrete post, being that concrete post (2) is filled between outer steel pipe (1) and the interior steel pipe (6) and becomes a hollow concrete post, is a cavity (4) in the 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 ends flange (1a), the horizontal straight trough that one group of equally distributed break-through hollow concrete post (2) is all arranged on concrete post (2) end face and the bottom surface, top and bottom at concrete filled steel tubular column, between outer steel pipe (1) flange (1a) and the 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) all is 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) evenly distributes on the horizontal section, each weldering nail (5) and place Surface Vertical, 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. the weldering of each layer same level position nail (5) is overlapping being distributed on the same vertical plane up and down; Each weldering nail (5) all interts in concrete post (2).