Flat concrete filled steel tube double-limb combined lattice type cantilever column

Abstract

The utility model discloses a flat steel pipe concrete double-limb combined lattice type cantilever column which comprises a first flat steel pipe and a second flat steel pipe which are vertically arranged, the width of the first flat steel pipe and the width of the second flat steel pipe in the front-back direction are larger than the length of the first flat steel pipe and the length of the second flat steel pipe in the left-right direction, and the first flat steel pipe is located on the left side of the second flat steel pipe. Concrete is poured in the first flat steel pipe and the second flat steel pipe; the front side wall of the first flat steel pipe is connected with the front side wall of the second flat steel pipe through a plurality of groups of first lacing bars, and the rear side wall of the first flat steel pipe is connected with the rear side wall of the second flat steel pipe through a plurality of groups of second lacing bars to form a truss structure; and a decorative layer is mounted on the outer side of the truss structure. The utility model not only has the advantages of low cost and convenience in construction, but also meets the bearing capacity, uses few materials and has good economical efficiency.

Description

Technical Field

[0001] The utility model belongs to the field of steel structures, and particularly relates to a cantilever column. Background Art

[0002] Structures such as wayfinding signs, art publicity signs, and spiritual fortresses in cities have the characteristics of small bottom area and high height, and belong to typical cantilever column structures.

[0003] At present, the column member part of such cantilever columns mostly adopts the form of reinforced concrete columns with a rectangular cross-section or steel structure box columns. When constructing reinforced concrete columns, processes such as binding steel bars, erecting and removing formwork, and setting up and dismantling scaffolding are required, which have the problems of cumbersome construction and high installation cost. In order to ensure reliable force, steel structure box columns usually have thick box walls, large steel consumption, and there are no finished products for mass production, and they need to be specially made on the production line in the processing workshop, which also has the problems of high cost and cumbersome processes. Content of the Utility Model

[0004] The utility model provides a double-leg composite lattice cantilever column made of concrete-filled flat steel pipes, and its purpose is to solve the problems of high cost and cumbersome construction.

[0005] The technical solution of the utility model is as follows:

[0006] A double-leg composite lattice cantilever column made of concrete-filled flat steel pipes includes a vertically arranged first flat steel pipe and a second flat steel pipe. The width of each of the first flat steel pipe and the second flat steel pipe in the front-rear direction is greater than its length in the left-right direction, and the first flat steel pipe is located on the left side of the second flat steel pipe; concrete is poured into both the first flat steel pipe and the second flat steel pipe;

[0007] The front side wall of the first flat steel pipe is connected to the front side wall of the second flat steel pipe through multiple groups of first lacing bars, and the rear side wall of the first flat steel pipe is connected to the rear side wall of the second flat steel pipe through multiple groups of second lacing bars to form a truss structure;

[0008] A decorative layer is installed on the outside of the truss structure.

[0009] As a further improvement of the double-leg composite lattice cantilever column made of concrete-filled flat steel pipes: the cross-sectional shape of the cantilever column is a right trapezoid, and the left and right sides of the right trapezoid are the bottom sides.

[0010] As a further improvement of the double-leg composite lattice cantilever column made of concrete-filled flat steel pipes: the rear side walls of the first flat steel pipe and the second flat steel pipe are flush.

[0011] As a further improvement of the double-leg composite lattice cantilever column made of concrete-filled flat steel pipes: if the length of the left bottom plate of the right trapezoid is L1 and the length of the right bottom side is L2, then L1 is greater than or equal to L2.

[0012] As a further improvement of the double-limb composite lattice cantilever column made of flat steel tube concrete: 0.7*L1 ≤ L2 ≤ L1.

[0013] As a further improvement of the double-limb composite lattice cantilever column made of flat steel tube concrete: If the distance between the left bottom side and the right bottom plate of the right-angled trapezoid is L3, then 2*L1 ≤ L3 ≤ 4*L1.

[0014] As a further improvement of the double-limb composite lattice cantilever column made of flat steel tube concrete: If the width of the first flat steel tube in the front-back direction is D1 and the length in the left-right direction is B1, then 2.01*B1 ≤ D1 ≤ 3*B1.

[0015] As a further improvement of the double-limb composite lattice cantilever column made of flat steel tube concrete: If the width of the second flat steel tube in the front-back direction is D2 and the length in the left-right direction is B2, then 2.01*B2 ≤ D2 ≤ 3*B2.

[0016] As a further improvement of the double-limb composite lattice cantilever column made of flat steel tube concrete: The concrete is recycled aggregate concrete.

[0017] As a further improvement of the double-limb composite lattice cantilever column made of flat steel tube concrete: The first batten and the second batten are rectangular tubes.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. Compared with reinforced concrete columns, the utility model can save the processes of binding steel bars, formwork erection and removal, and scaffolding erection and removal during construction. Only concrete pouring is required on site, making the construction more convenient. Especially in combination with the self-compacting recycled aggregate concrete pouring process, the construction efficiency can be further improved and the cost can be reduced. Compared with steel structure box columns, the combination of flat steel tube concrete and truss structure in the utility model can fully meet the load-bearing requirements, can save a large amount of steel, and does not require customized processing, with the advantages of low cost and short construction period.

[0020] 2. The utility model arranges the flat steel tubes at the left and right side walls with a relatively large distance, and the width of the flat steel tubes in the front-back direction is greater than the length in the left-right direction. The stiffness of the long side of the flat steel tube concrete is fully utilized to bear the wind load in the front-back direction, and at the same time, the stiffness of the batten itself is combined with the short side of the flat steel tube concrete to bear the wind load in the left-right direction. While meeting the load-bearing requirements in all directions, the short side of the flat steel tube can be made as short as possible, using the least amount of flat steel tube and concrete materials, with good economy.

[0021] 3. Pouring concrete into the flat steel tube not only increases the self-weight and stiffness of the component, but also helps to reduce the overall cost of the structure and reduce the horizontal deformation caused by wind load.

[0022] 4. The batten bars are made of rectangular tubes, which are convenient for welding with flat steel tubes. In the workshop, a truss with greater stiffness can be directly formed, so that only hoisting and installation are required on site, saving time and facilitating the installation of the decorative layer.

[0023] 5. The cross-sectional shape of the present utility model is designed as a right trapezoid. Compared with the traditional rectangular cross-sectional structure, it not only occupies less area, but also saves more materials as a whole on the basis of meeting the personalized display function. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of the present utility model;

[0025] Figure 2 is an elevation view of the truss structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The technical solution of the present utility model will be described in detail below with reference to the drawings:

[0027] As shown in Figure 1 and 2 , a double-limb composite lattice cantilever column made of concrete-filled flat steel tubes includes a vertically arranged first flat steel tube 1 and a second flat steel tube 4. The width of the first flat steel tube 1 and the second flat steel tube 4 in the front-back direction is greater than the length in the left-right direction, and the first flat steel tube 1 is located on the left side of the second flat steel tube 4.

[0028] Concrete is poured into both the first flat steel tube 1 and the second flat steel tube 4, and the concrete is preferably recycled aggregate concrete.

[0029] The front side walls of the first flat steel tube 1 and the second flat steel tube 4 are connected by multiple groups of first batten bars 3, and the rear side walls of the first flat steel tube 1 and the second flat steel tube 4 are connected by multiple groups of second batten bars 5 to form a truss structure. Preferably, the first batten bars 3 and the second batten bars 5 are rectangular tubes, which are convenient for welding with flat steel tubes.

[0030] A decorative layer 2 is installed on the outside of the truss structure.

[0031] Further, the cross-sectional shape of the cantilever column is a right trapezoid, and the left and right sides of the right trapezoid are the two bases of the trapezoid, corresponding to the first flat steel tube 1 and the second flat steel tube 4 respectively. In this embodiment, the rear side walls of the first flat steel tube 1 and the second flat steel tube 4 are flush.

[0032] Further, let the length of the left bottom plate of the right trapezoid be L1 and the length of the right bottom edge be L2, then L1 is greater than or equal to L2, preferably 0.7*L1 ≤ L2 ≤ L1. Correspondingly, the width of the first flat steel tube 1 in the front-back direction is slightly greater than the width of the second flat steel tube 4 in the front-back direction.

[0033] Further, let the distance between the left bottom side and the right bottom plate of the right-angled trapezoid be L3, then 2*L1 ≤ L3 ≤ 4*L1, that is, the distance between the two flat steel pipes is significantly greater than the width of the flat steel pipe in the front-back direction.

[0034] Further, since the truss structure composed of batten bars and flat steel pipes has high stiffness in the left-right direction, the length of the flat steel pipe in the left-right direction can be shortened as much as possible to save steel and concrete. Specifically, let the width of the first flat steel pipe 1 in the front-back direction be D1 and the length in the left-right direction be B1, then 2.01*B1 ≤ D1 ≤ 3*B1. Similarly, let the width of the second flat steel pipe 4 in the front-back direction be D2 and the length in the left-right direction be B2, then 2.01*B2 ≤ D2 ≤ 3*B2. D1 and D2 are selected with reference to L1 and L2 on the corresponding side and the thickness of the decorative layer, and are usually 0.8 to 0.9 times the length of the corresponding bottom side.

[0035] During construction, first splice the finished hollow thin-walled flat steel pipes in the height direction in the processing workshop to form the first flat steel pipe 1 and the second flat steel pipe 4. At the same time, process the rectangular pipes into the first batten bar 3 and the second batten bar 5. Then, connect the first batten bar 3, the second batten bar 5, the first flat steel pipe 1 and the second flat steel pipe 4 by welding to form a truss structure (integral column member). After arriving at the installation site, after hoisting the integral column member into place, pour self-compacting recycled aggregate concrete into the first flat steel pipe 1 and the second flat steel pipe 4 respectively to complete the structure installation. Finally, add keels on the outside of the structure, install decorative panels, and seal the joints to completion.

[0036] It should be noted that for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

Claims

1. A flat steel tube concrete double-limb combined lattice cantilever column, characterized in that: The invention comprises a first flat steel tube (1) and a second flat steel tube (4) which are arranged vertically, wherein the width of the first flat steel tube (1) and the second flat steel tube (4) in the front-to-back direction is greater than the length of the first flat steel tube (1) and the second flat steel tube (4) in the left-to-right direction, and the first flat steel tube (1) is located on the left side of the second flat steel tube (4); and concrete is poured inside the first flat steel tube (1) and the second flat steel tube (4); The front side wall of the first flat steel tube (1) and the front side wall of the second flat steel tube (4) are connected via a plurality of groups of first tie bars (3), and the rear side wall of the first flat steel tube (1) and the rear side wall of the second flat steel tube (4) are connected via a plurality of groups of second tie bars (5), so as to form a truss structure; A decorative layer (2) is installed on the outer side of the truss structure.

2. The flat steel tube concrete double-limb combined lattice cantilever column according to claim 1, characterized in that: The cross-sectional shape of the cantilever column is a right-angled trapezoid, and the left and right sides of the right-angled trapezoid are bases.

3. The flat steel tube concrete double-limb combined lattice cantilever column according to claim 2, characterized in that: The rear side wall of the first flat steel tube (1) and the rear side wall of the second flat steel tube (4) are flush with each other.

4. The flat steel tube concrete double-limb combined lattice cantilever column as claimed in claim 3, characterized in that: Suppose the length of the left base of the right trapezoid is L1, and the length of the right base is L2, then L1 is greater than or equal to L2.

5. The flat steel tube concrete double-limb combined lattice cantilever column according to claim 4, characterized in that: 0.7*L1≤L2≤L1.

6. The flat steel tube concrete double-limb combined lattice cantilever column according to claim 4, characterized in that: Assume that the distance between the left base and the right base of the right trapezoid is L3, then 2*L1≤L3≤4*L1.

7. The flat steel tube concrete double-limb combined lattice cantilever column according to claim 6, characterized in that: Assuming that the width of the first flat steel tube (1) in the front-to-back direction is D1 and the length in the left-to-right direction is B1, then 2.01*B1≤D1≤3*B1.

8. The flat steel tube concrete double-limb combined lattice cantilever column according to claim 6, characterized in that: Assuming that the width of the second flat steel tube (4) in the front-to-back direction is D2 and the length in the left-to-right direction is B2, then 2.01*B2≤D2≤3*B2.

9. The flat steel tube concrete double-limb combined lattice cantilever column according to any one of claims 1 to 8, characterized in that: The concrete is recycled aggregate concrete.

10. The flat steel tube concrete double-limb combined lattice cantilever column according to any one of claims 1 to 8, characterized in that: The first tie bar (3) and the second tie bar (5) are rectangular tubes.

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