CN212001925U - Concrete filled steel tube member with concrete wrapped on two sides - Google Patents
Concrete filled steel tube member with concrete wrapped on two sides Download PDFInfo
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- CN212001925U CN212001925U CN202020300376.5U CN202020300376U CN212001925U CN 212001925 U CN212001925 U CN 212001925U CN 202020300376 U CN202020300376 U CN 202020300376U CN 212001925 U CN212001925 U CN 212001925U
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Abstract
The utility model discloses a steel pipe concrete component of concrete is wrapped up in to both sides, two relative end steel sheets and two relative side steel sheets are weld joint in succession and are formed quadrangle cavity steel pipe, the distance at side steel sheet and the intersection line distance end steel sheet edge of end steel sheet is not less than 20mm, the hole has been seted up on the side steel sheet, the hole is array or plum blossom form and distributes, the hole is greater than 50mm to the clear distance at side steel sheet edge, the inside concrete that fills of quadrangle cavity steel pipe, two side steel sheet outsides are all wrapped up in and are covered the concrete, side steel sheet outside concrete is wrapped up in and is covered to and end the overhanging marginal parallel and level of steel sheet, it forms wholly through the hole with wrapping up in and cover the concrete. The concrete of steel pipe inside and outside is pour simultaneously, connects through the hole on the side steel sheet and forms wholly, has effectively prevented to wrap up in the concrete and has come off in the use stage, and the corruption and the fire resistance problem of both sides steel sheet can be solved simultaneously to outside of tubes concrete, and need not the template basically to greatly reduced construction cost.
Description
Technical Field
The utility model relates to a civil engineering technical field, concretely relates to both sides are wrapped up in steel pipe concrete component who covers the concrete.
Background
Concrete-filled steel tubes are composite members formed by filling concrete in steel tubes. The member can well exert respective mechanical properties of steel and concrete, forms a combined effect of '1 +1> 2' and is widely applied to the fields of building engineering, bridge engineering and the like. The main problems existing in the application of the existing steel pipe concrete are that the steel pipe is easy to corrode outside the concrete and is easy to soften by fire in case of fire, and the cost of the anti-corrosion and fireproof treatment is high. To solve this problem, the following two methods are generally employed: one method is to directly spray fireproof and anticorrosive paint or concrete on the outside of the steel pipe, but the fireproof and anticorrosive paint has higher cost, and the sprayed concrete on the outside of the steel pipe is easy to fall off; the other method is to embed the steel tube concrete into the concrete to form the steel tube concrete composite column, but the concrete around the outside of the steel tube concrete in the steel tube concrete composite column needs to be supported by a formwork, so that the superiority of the steel tube concrete construction without the formwork is lost, and the construction cost and the construction period are increased. In addition, the complicated construction of the steel pipe concrete composite column joint is also a main problem which influences the wide application of the steel pipe concrete composite column joint.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a concrete filled steel tube component of concrete is wrapped up in to both sides has good anticorrosion and fire behavior.
In order to achieve the above object, the utility model adopts the following technical scheme: a concrete filled steel tube member with concrete wrapped on two sides comprises two opposite end steel plates and two opposite side steel plates which are connected by continuous welding seams to form a quadrilateral cavity steel tube, the distance between the intersection line of the side steel plates and the end steel plates and the edge of the end steel plates is not less than 20mm, holes are arranged on the side steel plates and distributed in an array or plum blossom shape, the clear distance from the holes to the edge of the side steel plates is more than 50mm,
the concrete is filled in the quadrilateral cavity steel pipe, the outer sides of the two side steel plates are wrapped with the concrete, the concrete outside the side steel plates is wrapped with the concrete to be flush with the extending edge of the end steel plate, and the filled concrete and the wrapped concrete pass through the hole to form a whole.
Preferably, the shape of the hole is one or more of a circle, an ellipse and a polygon without acute angles, and the aperture is not less than 1.5 times of the particle size of the coarse aggregate of the filled concrete.
Preferably, the side steel plates are flat steel plates or corrugated steel plates.
Preferably, the end steel plate is a flat steel plate or a flat steel plate with coiled edges, the thickness of the end steel plate is larger than 6mm, and the ratio of the width of the end steel plate between the two side steel plates to the thickness of the end steel plate is smaller than 80.
Preferably, the steel materials of the end steel plates and the side steel plates are carbon structural steel or low alloy steel, and the quality grade of the steel materials is not lower than grade B.
Preferably, the filling concrete and the wrapping concrete are one of common concrete, recycled concrete, high-strength concrete and high-performance concrete, and the strength grade of the concrete is not less than C30.
Further, when the thickness of the concrete coated on the outer side of the side steel plate is larger than 50mm, a steel bar net piece or a fiber net piece is arranged in the coated concrete.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the concrete of cavity steel pipe inside and side steel sheet outside pours simultaneously, and the inside and outside concrete of steel pipe forms wholly through the hole connection on the side steel sheet, has effectively prevented to wrap up in the concrete and has come off in the use stage.
2. The cavity steel pipe can effectively restrict the concrete in the pipe, the mechanical property of the concrete in the pipe is improved, the concrete in the pipe and the concrete outside the pipe can both prevent the early buckling of the steel pipe under external load, and the concrete outside the pipe can simultaneously solve the problems of corrosion and fire resistance of steel plates on two sides. Consider that the end steel sheet side often has the wall body to link to each other, the utility model discloses can the fire prevention and the anticorrosive cost of greatly reduced steel pipe concrete component.
3. Compared with a steel pipe concrete composite column, the prefabricated member is adopted, a template is not needed basically, and the construction cost is greatly reduced.
Drawings
FIG. 1 is a cavity steel pipe of embodiment 1 of the present invention;
FIG. 2 is a schematic view of a concrete filled steel tube member according to example 1 of the present invention;
FIG. 3 is a cavity steel pipe of embodiment 2 of the present invention;
FIG. 4 is a schematic view of a concrete filled steel tube member according to example 2 of the present invention;
FIG. 5 is a cavity steel pipe of embodiment 3 of the present invention;
FIG. 6 is a schematic view of a concrete filled steel tube member according to example 3 of the present invention;
in the figure, 1, end steel plate; 2. side steel plates; 21. a hole; 3. filling concrete; 4. wrapping concrete; 5. and (4) reinforcing steel bar meshes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
A concrete filled steel tube member with concrete coated on both sides, comprising: two parallel opposite end steel plates 1 with the thickness of 12mm and two parallel opposite side steel plates 2 are mutually welded to form a rectangular cavity steel pipe, and the distance between the intersection line of the side steel plates 2 and the end steel plates 1 and the edge of the end steel plates 1 is 40 mm;
the end steel plate 1 and the side steel plate 2 are both flat steel plates, and the steel material is low alloy steel Q345B; the side steel plate 2 is provided with round holes 21 with the aperture of 60mm, the holes 21 are distributed in an array form, and the clear distance from the holes 21 to the edge of the side steel plate 2 is 100 mm; the structure of the quadrangular cavity steel pipe is shown in figure 1;
ordinary concrete is filled in the quadrilateral cavity steel pipe, the ordinary concrete is wrapped on the outer side of the side steel plate 2, the concrete on the outer side of the side steel plate 2 is wrapped to be flush with the extending edge of the end steel plate 1, and the strength grades of the concrete filled in the cavity steel pipe 3 and the concrete wrapped on the outer side of the side steel plate 4 are C40. The filling concrete 3 and the wrapping concrete 4 are integrally formed through the hole 21, and the structure is shown in fig. 2.
The manufacturing method of the concrete-filled steel tube member with the two sides coated with concrete comprises the following steps:
1) forming holes in an array mode on the flat steel plate according to the designed hole type, the designed hole diameter and the designed hole forming position to serve as side steel plates 2;
2) positioning the end steel plate 1 and the side steel plate 2 with holes, and then carrying out high-frequency butt joint and continuous welding to form a quadrilateral cavity steel pipe;
3) and (3) adopting horizontal pouring, placing the cavity steel pipe on a pouring table board, enabling the side steel plate 2 with the holes to face upwards, blocking two ends of the cavity steel pipe, pouring concrete into the cavity steel pipe and out of the cavity at the other side from the hole 21 of the side steel plate 2, finally enabling the thickness of the wrapping concrete 4 at the outer side of the side steel plate 2 with the holes to be flush with the overhanging edge of the end steel plate 1, and curing the concrete according to the standard requirement to obtain the steel pipe concrete component with the concrete wrapped at two sides.
Example 2
A concrete filled steel tube member with concrete coated on both sides, comprising: two parallel opposite end steel plates 1 with the thickness of 8mm and two parallel opposite side steel plates 2 are mutually welded to form a rectangular cavity steel pipe, and the distance between the intersection line of the side steel plates 2 and the end steel plates 1 and the edge of the end steel plates is 35 mm;
the end steel plate 1 is a coiled flat steel plate, the side steel plate 2 is a corrugated steel plate, and the steel material is carbon structural steel Q235B; the side steel plate 2 is provided with round holes 21 with the aperture of 50mm, the holes 21 are distributed in a plum blossom shape, and the clear distance from the holes 21 to the edge of the side steel plate 2 is 120 mm; the structure of the quadrangular cavity steel pipe is shown in FIG. 3;
ordinary concrete is filled in the quadrilateral cavity steel pipe, the ordinary concrete is wrapped on the outer side of the side steel plate 2, the concrete on the outer side of the side steel plate 2 is wrapped to be flush with the extending edge of the end steel plate 1, and the strength grades of the concrete filled in the cavity steel pipe 3 and the concrete wrapped on the outer side of the side steel plate 2 are C45. The filling concrete 3 and the wrapping concrete 4 are integrally formed through the hole 21, and the structure is shown in fig. 4.
The manufacturing method of the concrete-filled steel tube member with the two sides coated with concrete comprises the following steps:
1) plum blossom-shaped holes are formed on the corrugated steel plate according to the designed hole type, the designed hole diameter and the designed hole forming position to serve as side steel plates 2;
2) positioning the end steel plate 1 and the side steel plate 2 with holes, and then automatically butting and continuously welding to form a quadrilateral cavity steel pipe;
3) and (3) adopting horizontal pouring, placing the cavity steel pipe on a pouring table board, enabling the side steel plate 2 with the holes to face upwards, blocking two ends of the cavity steel pipe, pouring concrete into the cavity steel pipe and out of the cavity at the other side from the hole 21 of the side steel plate 2, finally enabling the thickness of the wrapping concrete 4 at the outer side of the side steel plate 2 with the holes to be flush with the overhanging edge of the end steel plate 1, and curing the concrete according to the standard requirement to obtain the steel pipe concrete component with the concrete wrapped at two sides.
Example 3
A concrete filled steel tube member with concrete coated on both sides, comprising: two parallel opposite end steel plates 1 with the thickness of 16mm and two non-parallel opposite side steel plates 2 are mutually welded to form a trapezoidal cavity steel pipe, and the distance from the intersection line of the side steel plates 2 and the end steel plates 1 to the edge of the end steel plates is 80 mm;
the end steel plate 1 and the side steel plate 2 are both flat steel plates, and the steel material is low alloy steel Q345B; the side steel plate 2 is provided with oval holes 21, the minor axis is 50mm, the holes 21 are distributed in an array form, and the clear distance from the holes 21 to the edge of the side steel plate 2 is 100 mm; the structure of the quadrangular cavity steel pipe is shown in FIG. 5;
high-performance concrete is filled in the quadrilateral cavity steel pipe, the high-performance concrete is wrapped outside the side steel plate 2, the concrete outside the side steel plate 2 is wrapped to be parallel and level with the overhanging edge of the end steel plate 1, the concrete 4 is wrapped to be covered, the reinforcing mesh 5 is arranged inside the concrete 4, and the strength grade of the concrete 4 wrapped outside the cavity steel pipe and the concrete 3 filled in the cavity steel pipe is C80. The filling concrete 3 and the wrapping concrete 4 are integrally formed through the hole 21, and the structure is shown in fig. 6.
The manufacturing method of the concrete-filled steel tube member with the two sides coated with concrete comprises the following steps:
1) forming holes in an array mode on the flat steel plate according to the designed hole type, the designed hole diameter and the designed hole forming position to serve as side steel plates 2;
2) positioning the end steel plate 1 and the side steel plate 2 with holes, and then automatically butting and continuously welding to form a quadrilateral cavity steel pipe; binding cushion blocks on the reinforcing mesh 5, and then respectively positioning the outer sides of the two side steel plates 2;
3) and (3) adopting horizontal pouring, placing the cavity steel pipe on a pouring table board, enabling the side steel plate 2 with the holes to face upwards, blocking two ends of the cavity steel pipe, pouring concrete into the cavity steel pipe and out of the cavity at the other side from the hole 21 of the side steel plate 2, finally enabling the thickness of the wrapping concrete 4 at the outer side of the side steel plate 2 with the holes to be flush with the overhanging edge of the end steel plate 1, and curing the concrete according to the standard requirement to obtain the steel pipe concrete component with the concrete wrapped at two sides.
It should be noted that the concrete filled steel tube member with concrete coated on both sides can also be used as a cast-in-place member. Adopting in-situ pouring, conveying the processed cavity steel pipe to a construction site for positioning, and supporting the side steel plate outer side template with the holes; and then pouring concrete into the cavity steel pipe from the top of the cavity steel pipe to the height of the cavity steel pipe, and removing the template after the concrete is cured until the strength reaches the stripping strength specified by the specification, so as to obtain the concrete.
It should be noted that, the practice of further improving the bearing capacity and stability of the member, such as adding a welding stiffener to the end steel plate and the perforated side steel plate, configuring a steel bar or a section steel in the concrete inside the cavity pipe, and adding a connecting piece in the holes on both sides, still belongs to the protection scope of the patent.
Claims (7)
1. The utility model provides a both sides are wrapped up in and are covered concrete filled steel tube component of concrete, a serial communication port, including two relative end steel sheets and two relative side steel sheets weld joint formation quadrangle cavity steel pipes in succession each other, the intersection line distance of side steel sheet and end steel sheet is not less than 20mm from the distance at end steel sheet edge, the hole has been seted up on the side steel sheet, the hole is array or plum blossom form and distributes, the hole is greater than 50mm to the clean distance at side steel sheet edge, the inside concrete that fills of quadrangle cavity steel pipe, two side steel sheet outsides all wrap up and cover the concrete, and side steel sheet outside concrete wraps up and covers to and hold the overhanging marginal parallel and level of steel sheet, fills the concrete and wraps up and cover the concrete and pass through the hole forms wholly.
2. The concrete filled steel tube member covered with concrete on two sides according to claim 1, wherein the holes are one or more of circular, oval and polygonal without acute angles, and the hole diameter is not less than 1.5 times of the particle diameter of the coarse aggregate of the filled concrete.
3. A concrete filled steel tubular element with two sides covered with concrete according to claim 1, wherein said side steel plates are flat steel plates or corrugated steel plates.
4. A concrete filled steel tube member with concrete wrapped on both sides as claimed in claim 1, wherein the end steel plates are flat steel plates or tape edge flat steel plates, the thickness of the end steel plates is greater than 6mm, and the ratio of the width of the end steel plates between the two side steel plates to the thickness of the end steel plates is less than 80.
5. The concrete-filled steel tube component with concrete coated on both sides as claimed in claim 1, wherein the steel material of the end steel plates and the side steel plates is carbon structural steel or low alloy steel, and the quality grade of the steel material is not lower than grade B.
6. The concrete-filled steel tube member with two sides coated with concrete according to claim 1, wherein the filling concrete and the coating concrete are one of ordinary concrete, recycled concrete, high-strength concrete and high-performance concrete, and the concrete strength grade is not less than C30.
7. The concrete-filled steel tube component with the concrete coated on two sides according to claim 1, wherein when the thickness of the concrete coated on the outer sides of the side steel plates is larger than 50mm, a steel mesh or a fiber mesh is arranged inside the coated concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020300376.5U CN212001925U (en) | 2020-03-12 | 2020-03-12 | Concrete filled steel tube member with concrete wrapped on two sides |
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| CN202020300376.5U CN212001925U (en) | 2020-03-12 | 2020-03-12 | Concrete filled steel tube member with concrete wrapped on two sides |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219017A (en) * | 2020-03-12 | 2020-06-02 | 中国矿业大学 | Concrete-filled steel tube component coated with concrete on two sides and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219017A (en) * | 2020-03-12 | 2020-06-02 | 中国矿业大学 | Concrete-filled steel tube component coated with concrete on two sides and manufacturing method thereof |
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