CN111962688A - Rigid connection node between box steel column and steel reinforced concrete column - Google Patents
Rigid connection node between box steel column and steel reinforced concrete column Download PDFInfo
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- CN111962688A CN111962688A CN202010899088.0A CN202010899088A CN111962688A CN 111962688 A CN111962688 A CN 111962688A CN 202010899088 A CN202010899088 A CN 202010899088A CN 111962688 A CN111962688 A CN 111962688A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/185—Connections not covered by E04B1/21 and E04B1/2403, e.g. connections between structural parts of different material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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Abstract
The invention relates to a rigid connection node between a box-type steel column and a section steel concrete column, which comprises the box-type steel column and the section steel concrete column, wherein the section steel concrete column is provided with a cross-shaped steel plate with a uniform cross section, the node also comprises a sealing plate, the top end of the section steel concrete column is provided with a cross-shaped steel plate with a variable cross section, the end surface with a smaller area of the cross-shaped steel plate with the variable cross section is connected with the cross-shaped steel plate with the uniform cross section, the box-type steel column, the sealing plate and the cross-shaped steel plate with the variable cross section are sequentially welded, the sealing plate is provided with a grout overflow. Compared with the prior art, the invention has the advantages of high rigidity, strong bearing capacity and the like.
Description
Technical Field
The invention relates to a column connection node, in particular to a rigid connection node between a box steel column and a steel reinforced concrete column.
Background
With the continuous and deep research of material performance and structure theory, the steel structure is widely applied to building engineering by virtue of the advantages of light weight, high strength, good earthquake resistance and the like. In a common steel frame and steel support frame structure, a column section usually adopts an H-shaped section, and when the structural rigidity or the bearing capacity does not meet the specification requirement, a box-shaped section is required. For a steel frame structure with a basement, the basement column generally adopts steel reinforced concrete, the section of the steel rib in the steel reinforced concrete column is generally H-shaped steel or a cross-shaped steel plate, the steel rib can directly extend downwards to form the steel rib in the steel reinforced concrete column for the H-shaped steel column, but for the box-shaped steel column, because a web plate and a flange form an integral closed space, concrete pouring is not convenient, and the steel rib is not generally used as the steel rib in the steel reinforced concrete column. For the steel reinforced concrete column adopting the cross steel plate, the joint of the steel reinforced concrete column and the box-type steel column is often easy to have sudden changes of rigidity and bearing capacity, and the safety of the structure is not facilitated.
The prior art also provides some solutions, and Chinese patent CN201721254456.6 provides a prefabricated steel reinforced concrete assembled integral column connection node, which is characterized by comprising a prefabricated steel reinforced concrete column, wherein a main steel rib is arranged inside the prefabricated steel reinforced concrete column, reducing connection steels are respectively arranged at two ends of the main steel rib, butt-joint steels are arranged outside the reducing connection steels, the prefabricated steel reinforced concrete column is connected through the butt-joint steels, and the butt-joint steels are in rigid connection. The connection mode is integrated connection, and has high connection strength, wide application range and wide applicability.
However, the patent has the following problems:
firstly, this connected node is prefabricated assembled structure, and the structure wholeness is poor than cast-in-place node, takes place to damage easily under the earthquake effect, unsatisfied "strong node, weak component"'s antidetonation conceptual design.
Secondly, the main steel ribs of the connecting joint adopt the mouth shape, a closed space is formed in a joint area, the connecting joint is not easy to compact during concrete pouring, weak parts are easy to form, and the bearing capacity and the rigidity of the structure are reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a rigid connection node between a box steel column and a steel reinforced concrete column, which has high rigidity and strong bearing capacity.
The purpose of the invention can be realized by the following technical scheme:
a rigid connection node between a box steel column and a section steel concrete column comprises the box steel column, the section steel concrete column and a sealing plate, wherein the section steel concrete column is provided with a cross-shaped steel plate with a uniform cross section, the top end of the section steel concrete column is provided with a cross-shaped steel plate with a variable cross section, the end face with a smaller area of the cross-shaped steel plate with the uniform cross section is connected with the cross-shaped steel plate with the uniform cross section, the box steel column, the sealing plate and the cross-shaped steel plate with the variable cross section are sequentially welded to ensure the rigidity and bearing capacity change continuity between the box steel column and the section steel concrete column, the sealing plate and the cross-shaped steel plate are provided with grout overflow holes to facilitate the concrete to flow from the section steel concrete column to the box steel column during grouting, so that the bottom of the box steel column 1 is filled with concrete, the concrete pouring compactness at the top of the section steel concrete, the side of box steel column be equipped with the overflow hole, the overflow hole is used for observing whether the height of the concrete in box steel column 1 reaches the height of overflow hole place.
Furthermore, stiffening inclined ribs are welded between 2 adjacent rib plates of the cross-section-variable steel plate, so that uniform transition of rigidity between the box-type steel column and the section steel concrete column is further ensured, and rigidity mutation is avoided.
Furthermore, the shape of the stiffening inclined rib is isosceles trapezoid, 2 waist edges of the isosceles trapezoid are attached to the edges of 2 adjacent rib plates of the variable cross-section cross-shaped steel plate, the thickness of the stiffening inclined rib is equal to that of the rib plates of the variable cross-section cross-shaped steel plate, and welding feasibility is guaranteed.
Furthermore, the stiffening inclined ribs are correspondingly provided with grout overflow holes at positions right below the grout overflow holes in the sealing plate, so that the fluidity of concrete during pouring is ensured, and the concrete can easily flow to enter the bottom of the box-shaped steel column.
Furthermore, the sealing plate is provided with a plurality of grout overflow holes, the sealing plate is divided into 4 areas by the cross-shaped projection surface of the cross section of the variable cross-section cross-shaped steel plate on the sealing plate, and the plurality of grout overflow holes are uniformly distributed on the 4 areas, so that the uniform distribution of concrete is facilitated.
Furthermore, the rib plate of the cross-section-variable steel plate is provided with 1 or more slurry overflow holes, and the slurry overflow holes are arranged at intervals along the vertical direction, so that the concrete is ensured to be uniformly filled.
Furthermore, the distance between the overflow hole and the sealing plate is 1.5 times of the side length of the cross section of the box-type steel column, the aperture of the overflow hole is smaller than 10mm, and damage to the box-type steel column is reduced.
Furthermore, the end face with the smaller area of the variable cross-section cross-shaped steel plate is completely the same as the end face of the uniform cross-section cross-shaped steel plate, the height of the variable cross-section cross-shaped steel plate is not less than twice of the side length of the cross section of the section steel concrete column, the area of the sealing plate is the same as the area of the cross section of the box-type steel column, the side length of the sealing plate is equal to the maximum width of the end face with the larger area of the variable cross-section cross-shaped steel plate, the thickness of the sealing plate is greater than the larger value of the thickness of the side wall of the box-type steel column and the thickness of the rib plate of the variable cross-section cross-shaped steel plate, and the thickness of.
Furthermore, the aperture of the grout overflow hole is not smaller than 30mm, the particle size of the concrete stone aggregate is usually 10-30 mm, and the concrete can pass through the hole.
Compared with the prior art, the invention has the following beneficial effects:
(1) the invention welds the cross steel plate with variable cross section on the top of the cross steel plate with equal cross section in the steel concrete column, the box type steel column, the sealing plate and the cross steel plate with equal cross section are welded in sequence, the rigidity and bearing capacity change continuity between the box type steel column and the steel concrete column are ensured, the plastic hinge caused by rigidity mutation is avoided, the rigidity is large, the bearing capacity is strong, the sealing plate is provided with a grout overflow hole, the steel concrete column is grouted, concrete overflows into the box type steel column from the steel concrete column through the sealing plate, the concrete pouring compactness at the top of the steel concrete column and the force and rigidity transmission continuity between the box type steel column and the steel concrete column are ensured, meanwhile, overflow holes are formed in the side faces of the box-shaped steel columns, the overflow holes can be used for observing the height of concrete in the box-shaped steel columns, the concrete in the box-shaped steel columns is poured to a set height, and the operation is simple and convenient;
(2) stiffening inclined ribs are welded between 2 adjacent rib plates of the cross-shaped steel plate with the variable cross-section, so that uniform transition of rigidity between the box-type steel column and the section steel concrete column is further ensured, and rigidity mutation is avoided;
(3) the thickness of the stiffening inclined rib adopted by the invention is equal to that of the rib plate of the cross-shaped steel plate with the variable cross-section, so that the welding feasibility is ensured;
(4) the stiffening inclined ribs are provided with the grout overflow holes at corresponding positions which are positioned right below the grout overflow holes on the sealing plate, so that the fluidity of concrete during pouring is ensured, the concrete is easy to flow to enter the bottom of the box-shaped steel column, and the internal pouring compactness of the steel-concrete column is ensured;
(5) the sealing plate is divided into 4 areas by the cross-shaped projection surface of the cross section of the variable cross-section steel plate on the sealing plate, and the plurality of grout overflow holes are uniformly distributed on the 4 areas, so that the uniform distribution of concrete is facilitated;
(6) the rib plate of the cross-shaped steel plate with the variable cross-section is provided with a plurality of grout overflow holes, and the plurality of grout overflow holes (6) are arranged at intervals along the vertical direction, so that the uniform flowing and filling of concrete are ensured;
(7) the area of the sealing plate arranged in the invention is the same as the cross section area of the box-type steel column, the side length of the sealing plate is equal to the maximum width of the end face with larger area of the cross-shaped steel plate with variable cross section, and the thickness of the sealing plate is larger than the larger value of the thickness of the side wall of the box-type steel column and the thickness of the rib plate of the cross-shaped steel plate with variable cross section, so that the welding feasibility is ensured, and the;
(8) the height of the cross-shaped steel plate with the variable cross-section is not less than twice of the side length of the cross-section of the steel reinforced concrete column, so that the uniform transition of rigidity among the steel reinforced concrete columns is ensured.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 4 is a front view of a cross steel plate;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a schematic view of the structure of the sealing plate;
FIG. 7 is a schematic structural view of a stiffening rib;
the reference numbers in the figures illustrate:
1. the steel column comprises a box-type steel column, 2. a section steel concrete column, 21. a cross steel plate, 22. concrete, 3. a sealing plate, 4. a variable cross steel plate, 5. a stiffening inclined rib, 6. a grout overflow hole and 7. an overflow hole.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A rigid connection node between a box steel column and a section steel concrete column is disclosed, as shown in figure 1, figure 2 and figure 3, figure 4, figure 5, figure 6 and figure 7, and comprises the box steel column 1, the section steel concrete column 2 and a sealing plate 3, wherein a uniform cross-section cross-shaped steel plate 21 is arranged on the section steel concrete column 2, a variable cross-section cross-shaped steel plate 4 is arranged at the top end of the section steel concrete column 2, the end face with the smaller area of the variable cross-section cross-shaped steel plate 4 is connected with the uniform cross-section cross-shaped steel plate 21, the box steel column 1, the sealing plate 3 and the variable cross-section cross-shaped steel plate 4 are welded in sequence, the variable cross-section cross-shaped steel plate 4 ensures the rigidity and bearing capacity change continuity between the box steel column 1 and the section steel concrete column 2, and a grout overflow hole 6 is arranged on the sealing plate 3, so that concrete flows from the section steel concrete column 2 to the box steel column 1 during grouting, the bottom of the box steel column 1 The continuity of passing, the side of box steel column 1 is equipped with overflow hole 7, the distance of overflow hole 7 from sealing plate 3 is 1.5 times of box steel column 1 cross section side length, overflow hole 7 is used for observing whether the height of concrete in box steel column 1 reaches overflow hole 7 and is located the height, it has stiffening inclined rib 5 to weld between 2 adjacent rib plates of variable cross section cross steel sheet 4, further ensure the even transition of rigidity between box steel column 1 and shaped steel concrete column 2, avoid forming rigidity sudden change, stiffening inclined rib 5 multiplicable shaped steel concrete column's rigidity simultaneously, make connected node plasticity hinge appear on box steel column 1 under the effect of earthquake, and be higher than the height of concrete in box steel column 1, satisfy the regulation to the plastic hinge play hinge position of ground structure.
The area of the sealing plate 3 is the same as the area of the cross section of the box-type steel column 1, the side length of the sealing plate 3 is equal to the maximum width of the end face with the larger area of the cross-section variable steel plate 4, the end face with the smaller area of the cross-section variable steel plate 4 is completely the same as the end face of the cross-section uniform steel plate 21, the height of the cross-section variable steel plate 4 is not less than twice of the side length of the cross section of the profile steel concrete column 2, and the uniform transition of the rigidity between the profile steel concrete.
In order to ensure the continuous transmission of force between the box-type steel column 1 and the section steel concrete column 2 and the weldability of a welding line, the thickness of the sealing plate 3 is larger than the larger value of the thickness of the side wall of the box-type steel column 1 and the thickness of a rib plate of the variable cross-section cross-shaped steel plate 4, and the thickness of the sealing plate 3 is not smaller than 20 mm.
The shape of the stiffening inclined rib 5 is isosceles trapezoid, 2 waist edges of the isosceles trapezoid are attached to the edges of 2 adjacent rib plates of the variable cross-section cross-shaped steel plate 4, the thickness of the stiffening inclined rib 5 is equal to that of the rib plate of the variable cross-section cross-shaped steel plate 4, and the weldability between the stiffening inclined rib 5 and the rib plate of the variable cross-section cross-shaped steel plate 4 is ensured.
The particle size of the concrete stone aggregate is usually 10-30 mm, so the aperture of the grout overflow hole 6 is not less than 30 mm. The aperture of the overflow hole 7 is not more than 10mm, and the damage to the box-type steel column is reduced.
The pouring process of the rigid connection node between the box-type steel column and the steel-reinforced concrete column specifically comprises the following steps:
as shown in the figure 1, grouting is performed from the gap between the top of the section steel concrete column 2 and the box-type steel column 1, namely, the position A in the figure 1, concrete overflows to the bottom of the box-type steel column 1 through the grout overflow hole 6 in the sealing plate 3, whether the height of the concrete in the box-type steel column 1 reaches the height of the overflow hole 7 or not can be observed through the overflow hole 7, and grouting is stopped when the height of the concrete reaches the height of the overflow hole 7.
This embodiment has provided a rigid connection node between box steel column and shaped steel concrete column, guarantee the continuity of section rigidity and bearing capacity change between box steel column 1 and shaped steel concrete column 2 through setting up sealing plate 3 and variable cross section cross steel sheet 4, strengthen the rigidity and the bearing capacity of bottom shaped steel concrete column through setting up stiffening rib 5 simultaneously, make 1 bottoms of box steel column that whole structure plasticity hinge appears under the earthquake action, satisfy the regulation of standardizing structural plasticity hinge play hinge position on the ground, good stability, rigidity is big, bearing capacity is strong.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The rigid connection node comprises a box-type steel column (1) and a profile steel concrete column (2), wherein a uniform cross-section cross-shaped steel plate (21) is arranged on the profile steel concrete column (2), and the rigid connection node is characterized in that the rigid connection node also comprises a sealing plate (3), a variable cross-section cross-shaped steel plate (4) is arranged at the top end of the profile steel concrete column (2), the end face, with a smaller area, of the variable cross-section cross-shaped steel plate (4) is connected with the uniform cross-section cross-shaped steel plate (21), the box-type steel column (1), the sealing plate (3) and the variable cross-section cross-shaped steel plate (4) are welded in sequence, a grout overflow hole (6) is formed in the sealing plate (3), and an overflow hole (7) is formed in the side face of the.
2. The rigid connection node between a box steel column and a section steel concrete column according to claim 1, characterized in that a stiffening inclined rib (5) is welded between 2 adjacent rib plates of the cross steel plate (4) with variable cross section.
3. The rigid connection node between a box steel column and a section steel concrete column according to claim 2, characterized in that the shape of the stiffening inclined rib (5) is an isosceles trapezoid, 2 waist edges of the isosceles trapezoid are attached to the edges of 2 adjacent rib plates of the cross-shaped steel plate (4), and the thickness of the stiffening inclined rib (5) is equal to the thickness of the rib plate of the cross-shaped steel plate (4).
4. The rigid connection joint between a box steel column and a steel reinforced concrete column according to claim 2, wherein the stiffening ribs (5) are provided with grout holes (6) at corresponding positions right below the grout holes (6) on the sealing plate (3).
5. The rigid connection joint between a box steel column and a section steel concrete column according to claim 1, wherein the number of the grout holes (6) on the sealing plate (3) is multiple, the cross-shaped projection surface of the cross section of the variable cross-section steel plate (4) on the sealing plate (3) divides the sealing plate (3) into 4 areas, and the plurality of the grout holes (6) are uniformly distributed on the 4 areas.
6. The rigid connection node between a box steel column and a section steel concrete column according to claim 1, characterized in that the rib plate of the cross steel plate (4) with the variable cross section is provided with 1 or more grout holes (6), and the grout holes (6) are arranged at intervals along the vertical direction.
7. The rigid connection joint between the box-type steel column and the steel reinforced concrete column according to claim 1, wherein the distance between the overflow hole (7) and the sealing plate (3) is 1.5 times of the side length of the cross section of the box-type steel column (1), and the aperture of the overflow hole (7) is less than 10 mm.
8. The rigid connection joint between the box steel column and the section steel concrete column according to claim 1, wherein the area of the sealing plate (3) is the same as the cross-sectional area of the box steel column (1), the side length of the sealing plate (3) is equal to the maximum width of the end face with the larger area of the variable cross-section cross-shaped steel plate (4), the thickness of the sealing plate (3) is larger than the larger value of the thickness of the side wall of the box steel column (1) and the thickness of the rib plate of the variable cross-section cross-shaped steel plate (4), and the thickness of the sealing plate (3) is not smaller than 20 mm.
9. Rigid connection node between a box steel column and a section steel concrete column according to claim 1, characterized in that the aperture of the grout holes (6) is not less than 30 mm.
10. The rigid connection node between the box steel column and the section steel concrete column according to claim 1, wherein the end face with the smaller area of the variable cross-section cross-shaped steel plate (4) is identical to the end face of the uniform cross-section cross-shaped steel plate (21), and the height of the variable cross-section cross-shaped steel plate (4) is not less than twice the side length of the cross section of the section steel concrete column (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899088.0A CN111962688A (en) | 2020-08-31 | 2020-08-31 | Rigid connection node between box steel column and steel reinforced concrete column |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010899088.0A CN111962688A (en) | 2020-08-31 | 2020-08-31 | Rigid connection node between box steel column and steel reinforced concrete column |
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| CN111962688A true CN111962688A (en) | 2020-11-20 |
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| CN202010899088.0A Pending CN111962688A (en) | 2020-08-31 | 2020-08-31 | Rigid connection node between box steel column and steel reinforced concrete column |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737967A (en) * | 2021-09-18 | 2021-12-03 | 中国一冶集团有限公司 | Connecting structure of section steel reinforced concrete column and concrete beam and construction method |
| CN115354760A (en) * | 2022-08-18 | 2022-11-18 | 中铁二院工程集团有限责任公司 | Conversion node of round steel pipe column in cross column concrete column |
-
2020
- 2020-08-31 CN CN202010899088.0A patent/CN111962688A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113737967A (en) * | 2021-09-18 | 2021-12-03 | 中国一冶集团有限公司 | Connecting structure of section steel reinforced concrete column and concrete beam and construction method |
| CN113737967B (en) * | 2021-09-18 | 2023-03-14 | 中国一冶集团有限公司 | Connecting structure of section steel reinforced concrete column and concrete beam and construction method |
| CN115354760A (en) * | 2022-08-18 | 2022-11-18 | 中铁二院工程集团有限责任公司 | Conversion node of round steel pipe column in cross column concrete column |
| CN115354760B (en) * | 2022-08-18 | 2023-11-07 | 中铁二院工程集团有限责任公司 | Conversion node of round steel pipe column in cross column concrete column |
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