CN112922153A - Steel pipe concrete beam column connection structure for building - Google Patents
Steel pipe concrete beam column connection structure for building Download PDFInfo
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- CN112922153A CN112922153A CN202110062265.4A CN202110062265A CN112922153A CN 112922153 A CN112922153 A CN 112922153A CN 202110062265 A CN202110062265 A CN 202110062265A CN 112922153 A CN112922153 A CN 112922153A
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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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- 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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Abstract
The invention discloses a steel pipe concrete beam column connecting structure for a building, which comprises a steel pipe concrete column and an outer U-shaped steel, wherein the steel pipe concrete column comprises an upper section of steel pipe column and a lower section of steel pipe column, and is characterized in that: the shear-resistant mechanism is arranged between the upper-section steel pipe column and the lower-section steel pipe column and comprises a connecting plate, the connecting plate is provided with an inner hole, a middle steel cylinder is welded at the edge of the inner hole, part of the middle steel cylinder extends out of the inner cavity of the upper-section steel pipe column towards the upper part of the connecting plate, part of the middle steel cylinder extends out of the lower part of the connecting plate and is located in the lower-section steel pipe column, shear-resistant reinforcing steel bars are welded on the inner wall of the middle steel cylinder, the shear-resistant reinforcing steel bars are arranged along the inner peripheral wall of the middle steel cylinder, the shear-resistant reinforcing steel bars respectively extend upwards and downwards from the middle steel cylinder, stirrups are arranged at the parts of the shear-resistant reinforcing steel bars, multiple sections are arranged along the circumferential direction, and the end.
Description
Technical Field
The invention relates to the field of buildings, in particular to a steel pipe concrete beam column connecting structure.
Background
CN105569191A discloses an outsourcing steel reinforced concrete composite beam-steel pipe column connected node, and specifically discloses: the steel pipe column external beam device comprises an upper through type partition plate, a lower through type partition plate, a steel pipe column and a lateral connecting plate, wherein the upper through type partition plate and the lower through type partition plate transversely penetrate through the steel pipe column and are arranged on the steel pipe column, the upper through type partition plate is used for connecting negative moment reinforcing steel bars, the lower through type partition plate and the lateral connecting plate form a U-shaped device on the column side, an external steel beam is directly placed in the U-shaped device, and pouring holes and air holes are formed in the upper through type partition. The upper and lower through type partition boards are connected with the column wall of the steel pipe column through welding; the upper side partition plate is positioned at the position of the hogging moment steel bar at the top of the plate and used for supporting and welding the hogging moment steel bar, the lower side through type partition plate is positioned at the position corresponding to the position of a steel beam bottom plate of the outer package, one end of the lateral connecting plate is connected with the outer wall of the steel pipe column in a welding mode, and the other end of the lateral connecting plate and the lower side through type partition plate are welded to form a U-shaped integral device and used for supporting and; the shape of the upper through type partition plate and the lower through type partition plate is determined according to the beam-column connecting direction and the beam-column section size, a certain distance extends outwards in the direction of the connecting beam for connection, and the width in the other directions only meets the structural requirement. The steel beam wrapped outside the composite beam is C-shaped with inward turned upper flange or cap-shaped with outward turned upper flange and is directly arranged in the U-shaped integral device, and the bottom plate and the side web plate of the steel beam wrapped outside are connected with the bottom plate and the side plate of the U-shaped integral device through high-strength bolts. The upper and lower through type partition boards are in welded connection with the column wall of the steel pipe column, the lateral direction of the lateral connecting board is in welded connection with the outer wall of the steel pipe column, and the lateral connecting board is in welded connection with the lower through type partition board. In the above patent, two partition boards penetrating through the steel pipe column are adopted, namely an upper through type partition board and a lower through type partition board. The steel pipe column is divided into three parts by the upper and lower through type clapboards in a short distance, and the middle part is very short. Meanwhile, the lateral connecting plates and the steel beams wrapped outside need to be welded at the middle part, and then concrete needs to be poured. As a result, the middle portion of the steel pipe column is subjected to a large pressure, and a large shear force cannot be received between the upper portion and the middle portion of the steel pipe column and between the lower portion and the middle portion of the steel pipe column.
Disclosure of Invention
The invention aims to provide a steel pipe concrete beam-column connecting structure with strong shearing resistance.
In order to achieve the above object, the present invention is realized by: the utility model provides a steel pipe concrete beam column connection structure for building, includes steel core concrete column and outsourcing U-shaped steel, the steel core concrete column includes upper segment steel-pipe column and hypomere steel-pipe column, its characterized in that: a shear-resistant mechanism is arranged between the upper-section steel pipe column and the lower-section steel pipe column, the shear-resistant mechanism comprises a connecting plate, the connecting plate is provided with an inner hole, and four symmetrical air holes are formed in the connecting plate around the inner hole; the inner hole edge is welded with an intermediate steel cylinder, the intermediate steel cylinder extends to the upper part of a connecting plate and is positioned in the inner cavity of the upper section of steel pipe column, part of the intermediate steel cylinder extends to the lower part of the connecting plate and is positioned in the lower section of steel pipe column, the inner wall of the intermediate steel cylinder is welded with a plurality of shear-resistant reinforcing steel bars, the shear-resistant reinforcing steel bars extend upwards and downwards from the intermediate steel cylinder respectively, the extending parts of the shear-resistant reinforcing steel bars are provided with stirrups, the stirrups are provided with a plurality of sections along the circumferential direction, the end part of each section of the stirrup is wound with the shear-resistant reinforcing steel bar and then extends outwards, and the included angle of the extending part between two adjacent sections of the stirrups is not more than 90 degrees by adopting steel; reinforcing structures are respectively arranged between the upper plate surface of the connecting plate and the outer wall of the middle steel cylinder and between the lower plate surface of the connecting plate and the outer wall of the middle steel cylinder, the reinforcing structures are arranged along the circumferential direction, each reinforcing structure comprises a bottom plate welded with the upper plate surface or the lower plate surface of the connecting plate, one side of each bottom plate is abutted against the outer wall of the middle steel cylinder, each reinforcing structure also comprises a right-angled trapezoidal reinforcing rib, each right-angled trapezoidal reinforcing rib is vertically arranged along the axial direction of the middle steel cylinder, a right-angled waist is welded with the bottom plate, and the lower bottom of each reinforcing rib is welded with the outer wall of the middle steel cylinder; the outer diameter of the middle steel cylinder is smaller than the inner diameter of the inner cavity of the steel tube concrete column, the radial length of the reinforcing structure is not more than the distance between the outer wall of the middle steel cylinder and the inner cavity of the steel tube concrete column, and the length of the extending part of the stirrup is not more than the distance between the shear resistant steel bar and the inner cavity of the steel tube concrete column; the connecting plate is welded with the upper section steel pipe column and the lower section steel pipe column respectively, two sides of the connecting plate extend out of the steel pipe concrete column, negative-moment steel bars are welded to the extending parts respectively, and the outer-wrapped U-shaped steel is welded to the outer walls of two opposite sides of the lower section steel pipe column and is located below the negative-moment steel bars.
Further, the stirrups are divided into odd-numbered segments along the circumferential direction. Preferably, the stirrup is divided into 3-11 sections along the circumferential direction.
Furthermore, the reinforcing structures arranged on the upper plate surface of the connecting plate are odd, and the reinforcing structures arranged on the lower plate surface of the connecting plate are odd. Preferably, the number of the reinforcing structures arranged on the upper plate surface of the connecting plate is 3-15, the number of the reinforcing structures arranged on the lower plate surface of the connecting plate is 3-15, and the reinforcing structures on the upper plate surface are opposite to the reinforcing structures on the lower plate surface.
For further improvement shear capacity, put on the connecting plate the additional strengthening of face the same and equal in quantity with the additional strengthening who sets up face under the connecting plate the section number that the stirrup set up along the circumference, put on the connecting plate the additional strengthening of face and set up relative setting from top to bottom under the connecting plate and be located the middle part of stirrup section.
Preferably, a concrete through hole is arranged on the connecting plate between two adjacent reinforcing structures.
Has the advantages that:
the shear-resistant mechanism is adopted, and the shear-resistant reinforcing steel bars, the stirrups and the parts of the stirrups extending outwards are arranged on the shear-resistant mechanism, so that the connection strength between the upper steel pipe column and the lower steel pipe column can be improved, the shear strength between the connection surfaces of the upper steel pipe column and the lower steel pipe column and near the connection surfaces can be improved, and the upper steel pipe column and the lower steel pipe column at the connection surfaces are prevented from being broken and displaced. The odd stirrup section design and the design of the extending part of the adjacent stirrup smaller than 90 degrees are adopted, so that the force transmission can be facilitated, and the anti-seismic performance and the anti-shearing effect are improved. Adopt the design of the strengthening structure design of odd number and the strengthening rib of vertical trapezoidal form can improve the atress intensity, improve shock resistance and shear effect, the strengthening rib of right angle trapezoidal form can improve the ability of shearing with the vertical direction of the handling dispersion of connecting face department to adopt the anti-shear reinforcing bar can not influence the condition of pouring of concrete.
Drawings
Fig. 1 is an exploded view of a steel pipe concrete beam column connection structure according to examples 1 and 2;
FIG. 2 is a view showing a construction of a beam column connection of concrete filled steel pipes according to examples 1 and 2;
fig. 3 is a plan view of the shear mechanism of embodiments 1 and 2;
fig. 4 is a beam-column sectional view of a concrete filled steel tube beam-column structure in example 2.
Fig. 5 is a schematic structural view of a stirrup segment in example 2 and example 5.
Description of reference numerals: the steel pipe concrete column comprises a steel pipe concrete column 1, an upper section steel pipe column 101, a lower section steel pipe column 102, outsourcing U-shaped steel 2, a shearing mechanism 3, a connecting plate 301, an inner hole 302, air holes 303, a middle steel cylinder 304, shearing-resistant steel bars 305, stirrups 306, a reinforcing structure 4, a bottom plate 401, reinforcing ribs 402, negative bending moment steel bars 5, folding lugs 6, lower section right-angle steel 7 and upper section right-angle steel 8.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments will still fall within the scope of the present invention as claimed in the claims.
Example 1: as shown in fig. 1-3 and 5, a steel pipe concrete beam column connection structure for building comprises a steel pipe concrete column 1 and an outer-wrapped U-shaped steel 2, wherein the steel pipe concrete column comprises an upper steel pipe column 101 and a lower steel pipe column 102, a shear-resistant mechanism 3 is arranged between the upper steel pipe column and the lower steel pipe column, the shear-resistant mechanism comprises a connection plate 301, the connection plate is provided with an inner hole 302, and four symmetrical air holes 303 are formed in the connection plate around the inner hole. The inner hole edge is welded with an intermediate steel cylinder 304, the intermediate steel cylinder extends towards the upper part of a connecting plate and is positioned in the inner cavity of the upper section of steel pipe column, part of the intermediate steel cylinder extends towards the lower part of the connecting plate and is positioned in the lower section of steel pipe column, the inner wall of the intermediate steel cylinder is welded with shear resistant steel bars 305, a plurality of shear resistant steel bars are arranged along the inner peripheral wall of the intermediate steel cylinder, the shear resistant steel bars respectively extend upwards and downwards from the intermediate steel cylinder, the extending part of the shear resistant steel bars is provided with stirrups 305, the stirrups are provided with a plurality of sections along the circumferential direction, the end part of each section of the stirrups is wound with the shear resistant steel bars and then extends outwards, and the included angle of the two adjacent sections of the stirrups is; reinforcing structures 4 are respectively arranged between the upper plate surface of the connecting plate and the outer wall of the middle steel cylinder and between the lower plate surface of the connecting plate and the outer wall of the middle steel cylinder, the plurality of reinforcing structures are arranged along the circumferential direction, each reinforcing structure comprises a bottom plate 401 welded with the upper plate surface or the lower plate surface of the connecting plate, one side of each bottom plate abuts against the outer wall of the middle steel cylinder, each reinforcing structure further comprises a right-angled trapezoidal reinforcing rib 402 vertically arranged along the axial direction of the middle steel cylinder, and a right-angled waist is welded with the bottom plate, and a lower bottom of each reinforcing rib is welded with the outer wall of the middle steel cylinder; the outer diameter of the middle steel cylinder is smaller than the inner diameter of the inner cavity of the steel tube concrete column, the radial length of the reinforcing structure is not more than the distance between the outer wall of the middle steel cylinder and the inner cavity of the steel tube concrete column, and the length of the extending part of the stirrup is not more than the distance between the shear resistant steel bar and the inner cavity of the steel tube concrete column; the connecting plate is welded with the upper section steel pipe column and the lower section steel pipe column respectively, two sides of the connecting plate extend out of the steel pipe concrete column, negative bending moment steel bars 5 are welded to the extending parts respectively, and the outer-wrapped U-shaped steel is welded to the outer walls of two opposite sides of the lower section steel pipe column and is located below the negative bending moment steel bars.
In this embodiment, the stirrups are divided into odd-numbered segments in the circumferential direction. But is not limited to, 3, 5, 7, 9 or 11 segments. In this embodiment, the stirrup is divided into 5 sections along the circumference, wherein each section of stirrup includes the arc portion that is located the centre to and the portion of cup jointing that is located both ends, the portion of cup jointing has a cup joint circle and a shear force end that stretches out, the cup joint circle with the shear force end is formed after the tip of stirrup is inside completely, the cup joint circle is used for the cover on the anti-shear force reinforcing bar. The end parts of the stirrups at two adjacent ends are sleeved on the same anti-shearing reinforcing steel bar, and the two extending shearing ends extend outwards (the outside of the part is the outside of a ring formed by the directional stirrups), wherein the shearing end of the left stirrup extends towards the right side, and the shearing end of the right stirrup extends towards the left side. And the included angle between two adjacent shearing ends does not exceed 90 degrees, preferably 45-90 degrees, and 60 degrees is adopted in the embodiment. And the stirrup is provided in plurality along the axis.
In this embodiment, the number of the reinforcing structures provided on the upper plate surface of the connecting plate is odd, and the number of the reinforcing structures provided on the lower plate surface of the connecting plate is also odd. The number of the reinforcing structures arranged on the upper plate surface of the connecting plate is 3-15, and can be selected and not limited to 3, 5, 7, 9, 11, 13 or 15, and the number of the reinforcing structures arranged on the lower plate surface of the connecting plate is 3-15, and can be selected and not limited to 3, 5, 7, 9, 11, 13 or 15. And the number of the reinforcing structures on the upper plate surface and the number of the reinforcing structures on the lower plate surface can be the same or different. In this embodiment, the number of the reinforcing structures on the upper plate surface is 5, and the number of the reinforcing structures on the lower plate surface is opposite to that of the reinforcing structures on the upper plate surface. In this embodiment, the reinforcing structure is disposed in the middle of each stirrup segment, so that the shear strength can be improved. The bottom plate of the reinforcing structure is triangular, one side of the bottom plate welded with the outer wall of the middle steel cylinder is arc-shaped, and the part extending out of the middle steel cylinder is gradually narrowed.
As another embodiment in this embodiment, a concrete via is provided on the connecting plate between two adjacent reinforcing structures. By adopting the mode, the pouring with concrete can be more convenient.
In addition, the two sides of the connecting plate extend out of the concrete-filled steel tube column, the upper plate surface of the connecting plate is welded with the outer wall of the upper section of the steel tube column, the lower plate surface of the connecting plate is welded with the outer wall of the lower section of the steel tube column, and the extending parts of the two sides of the connecting plate are welded with negative-moment reinforcing steel bars 5; and the outer-wrapping U-shaped steel is welded on the outer wall of the lower section steel pipe column below the extending parts at the two sides of the connecting plate respectively.
A construction method of a steel pipe concrete beam column connecting structure for buildings comprises the following steps:
the first step is as follows: prefabricating the shearing resistant mechanism in a factory, (1) punching the inner hole and the air hole on the connecting plate; (2) welding the anti-shearing steel bars in the middle steel cylinder, prefabricating the stirrup section, installing the stirrup on the anti-shearing steel bars, and tightly binding the anti-shearing steel bar section by adopting steel wires; (3) mounting the intermediate steel cylinder into an inner hole on the connecting plate and welding; (4) welding the bottom plate of the reinforcing structure with the middle steel cylinder and the connecting plate, and then welding the right-angled trapezoid-shaped reinforcing ribs on the outer walls of the bottom plate and the middle steel cylinder;
the second step is that: in a construction site, (1) welding the outsourcing U-shaped steel on two opposite side walls of the lower steel pipe column, (2) respectively sleeving a middle steel cylinder and a shear resistant steel bar which are arranged on the shear resistant mechanism into inner cavities of the lower steel pipe column and an upper steel pipe column, welding the outer walls of the connecting plate and the lower steel pipe column, and welding a negative bending moment steel bar on a part of the connecting plate, which extends out of the connecting plate.
The steel pipe concrete beam column connection structure for building of this embodiment, adopt shear resisting mechanism, through the shear resistant reinforcing bar that sets up on the shear resisting mechanism, the outside part that stretches out of stirrup and stirrup, can improve the joint strength between upper segment steel-pipe column and the hypomere steel-pipe column, can improve between the connection face of upper segment steel-pipe column and hypomere steel-pipe column and near the shear strength of connection face, avoid taking place fracture and displacement between upper segment steel-pipe column and the hypomere steel-pipe column of connection face department. The odd stirrup section design and the design of the extending part of the adjacent stirrup smaller than 90 degrees are adopted, so that the force transmission can be facilitated, and the anti-seismic performance and the anti-shearing effect are improved. Adopt the design of the strengthening structure design of odd number and the strengthening rib of vertical trapezoidal form can improve the atress intensity, improve shock resistance and shear effect, the strengthening rib of right angle trapezoidal form can improve the ability of shearing with the vertical direction of the handling dispersion of connecting face department to adopt the anti-shear reinforcing bar can not influence the condition of pouring of concrete.
Example 2: as shown in fig. 1 to 5, a steel pipe concrete beam column connection structure for building comprises a steel pipe concrete column 1 and an outer-wrapped U-shaped steel 2, wherein the steel pipe concrete column comprises an upper steel pipe column 101 and a lower steel pipe column 102, a shear-resistant mechanism 3 is arranged between the upper steel pipe column and the lower steel pipe column, the shear-resistant mechanism comprises a connection plate 301, the connection plate is provided with an inner hole 302, and four symmetrical air holes 303 are formed in the connection plate around the inner hole. The inner hole edge is welded with an intermediate steel cylinder 304, the intermediate steel cylinder extends towards the upper part of a connecting plate and is positioned in the inner cavity of the upper section of steel pipe column, part of the intermediate steel cylinder extends towards the lower part of the connecting plate and is positioned in the lower section of steel pipe column, the inner wall of the intermediate steel cylinder is welded with shear resistant steel bars 305, a plurality of shear resistant steel bars are arranged along the inner peripheral wall of the intermediate steel cylinder, the shear resistant steel bars respectively extend upwards and downwards from the intermediate steel cylinder, the extending part of the shear resistant steel bars is provided with stirrups 305, the stirrups are provided with a plurality of sections along the circumferential direction, the end part of each section of the stirrups is wound with the shear resistant steel bars and then extends outwards, and the included angle of the two adjacent sections of the stirrups is; reinforcing structures 4 are respectively arranged between the upper plate surface of the connecting plate and the outer wall of the middle steel cylinder and between the lower plate surface of the connecting plate and the outer wall of the middle steel cylinder, the plurality of reinforcing structures are arranged along the circumferential direction, each reinforcing structure comprises a bottom plate 401 welded with the upper plate surface or the lower plate surface of the connecting plate, one side of each bottom plate abuts against the outer wall of the middle steel cylinder, each reinforcing structure further comprises a right-angled trapezoidal reinforcing rib 402 vertically arranged along the axial direction of the middle steel cylinder, and a right-angled waist is welded with the bottom plate, and a lower bottom of each reinforcing rib is welded with the outer wall of the middle steel cylinder; the outer diameter of the middle steel cylinder is smaller than the inner diameter of the inner cavity of the steel tube concrete column, the radial length of the reinforcing structure is not more than the distance between the outer wall of the middle steel cylinder and the inner cavity of the steel tube concrete column, and the length of the extending part of the stirrup is not more than the distance between the shear resistant steel bar and the inner cavity of the steel tube concrete column; the connecting plate is welded with the upper section steel pipe column and the lower section steel pipe column respectively, two sides of the connecting plate extend out of the steel pipe concrete column, negative bending moment steel bars 5 are welded to the extending parts respectively, and the outer-wrapped U-shaped steel is welded to the outer walls of two opposite sides of the lower section steel pipe column and is located below the negative bending moment steel bars.
In this embodiment, the stirrups are divided into odd-numbered segments in the circumferential direction. But is not limited to, 3, 5, 7, 9 or 11 segments. In this embodiment, the stirrup is divided into 5 sections along the circumference, wherein each section of stirrup includes the arc portion that is located the centre to and the portion of cup jointing that is located both ends, the portion of cup jointing has a cup joint circle and a shear force end that stretches out, the cup joint circle with the shear force end is formed after the tip of stirrup is inside completely, the cup joint circle is used for the cover on the anti-shear force reinforcing bar. The end parts of the stirrups at two adjacent ends are sleeved on the same anti-shearing reinforcing steel bar, and the two extending shearing ends extend outwards (the outside of the part is the outside of a ring formed by the directional stirrups), wherein the shearing end of the left stirrup extends towards the right side, and the shearing end of the right stirrup extends towards the left side. And the included angle between two adjacent shearing ends does not exceed 90 degrees, preferably 45-90 degrees, and 60 degrees is adopted in the embodiment. And the stirrup is provided in plurality along the axis.
In this embodiment, the number of the reinforcing structures provided on the upper plate surface of the connecting plate is odd, and the number of the reinforcing structures provided on the lower plate surface of the connecting plate is also odd. The number of the reinforcing structures arranged on the upper plate surface of the connecting plate is 3-15, and can be selected and not limited to 3, 5, 7, 9, 11, 13 or 15, and the number of the reinforcing structures arranged on the lower plate surface of the connecting plate is 3-15, and can be selected and not limited to 3, 5, 7, 9, 11, 13 or 15. And the number of the reinforcing structures on the upper plate surface and the number of the reinforcing structures on the lower plate surface can be the same or different. In this embodiment, the number of the reinforcing structures on the upper plate surface is 5, and the number of the reinforcing structures on the lower plate surface is opposite to that of the reinforcing structures on the upper plate surface. In this embodiment, the reinforcing structure is disposed in the middle of each stirrup segment, so that the shear strength can be improved. The bottom plate of the reinforcing structure is triangular, one side of the bottom plate welded with the outer wall of the middle steel cylinder is arc-shaped, and the part extending out of the middle steel cylinder is gradually narrowed.
As another embodiment in this embodiment, a concrete via is provided on the connecting plate between two adjacent reinforcing structures. By adopting the mode, the pouring with concrete can be more convenient.
In addition, the two sides of the connecting plate extend out of the concrete-filled steel tube column, the upper plate surface of the connecting plate is welded with the outer wall of the upper section of the steel tube column, the lower plate surface of the connecting plate is welded with the outer wall of the lower section of the steel tube column, and the extending parts of the two sides of the connecting plate are welded with negative-moment reinforcing steel bars 5; and the outer-wrapping U-shaped steel is welded on the outer wall of the lower section steel pipe column below the extending parts at the two sides of the connecting plate respectively.
In this embodiment the outer coated U-shaped steel has a U-shaped section with outwardly extending ears 6 at the top of the U-shaped section. In addition, in this embodiment, the left and right sides of the outer-coated U-shaped steel are respectively connected with lower right angle steel 7, the opening of the lower right angle steel is upward and inward, and the lower right angle steel is partially welded with the folded lug of the outer-coated U-shaped steel and partially welded with the outer wall of the lower steel pipe column. And the upper section steel pipe column is welded with an upper section right angle steel 8 which is symmetrical with the lower section right angle steel and has a downward inward opening, and the upper section right angle steel is welded with the upper section steel pipe column. The upper right angle steel, the lower right angle steel and the U-shaped steel limit eight truncated angles of the steel beam. In this embodiment, the height of the shear-resistant steel bar in the upper section of the steel pipe column is not lower than that of the upper section of the right-angle steel.
A construction method of a steel pipe concrete beam column connecting structure for buildings comprises the following steps:
the first step is as follows: prefabricating the shearing resistant mechanism in a factory, (1) punching the inner hole and the air hole on the connecting plate; (2) welding the anti-shearing steel bars in the middle steel cylinder, prefabricating the stirrup section, installing the stirrup on the anti-shearing steel bars, and tightly binding the anti-shearing steel bar section by adopting steel wires; (3) mounting the intermediate steel cylinder into an inner hole on the connecting plate and welding; (4) welding the bottom plate of the reinforcing structure with the middle steel cylinder and the connecting plate, and then welding the right-angled trapezoid-shaped reinforcing ribs on the outer walls of the bottom plate and the middle steel cylinder;
the second step is that: in a construction site, (1) the outer U-shaped steel and the lower right-angle steel are welded on two opposite side walls of the lower steel pipe column, (2) the upper right-angle steel is welded on two opposite side walls of the upper steel pipe column, (3) an intermediate steel cylinder and shear resistant steel bars arranged on the shear resistant mechanism are respectively sleeved in inner cavities of the lower steel pipe column and the upper steel pipe column, the outer walls of the connecting plate and the upper steel pipe column are welded, the outer walls of the connecting plate and the lower steel pipe column are welded, and negative-moment steel bars are welded on the part, extending out of the connecting plate.
The steel pipe concrete beam column connection structure for building of this embodiment, adopt shear resisting mechanism, through the shear resistant reinforcing bar that sets up on the shear resisting mechanism, the outside part that stretches out of stirrup and stirrup, can improve the joint strength between upper segment steel-pipe column and the hypomere steel-pipe column, can improve between the connection face of upper segment steel-pipe column and hypomere steel-pipe column and near the shear strength of connection face, avoid taking place fracture and displacement between upper segment steel-pipe column and the hypomere steel-pipe column of connection face department. The odd stirrup section design and the design of the extending part of the adjacent stirrup smaller than 90 degrees are adopted, so that the force transmission can be facilitated, and the anti-seismic performance and the anti-shearing effect are improved. Adopt the design of the strengthening structure design of odd number and the strengthening rib of vertical trapezoidal form can improve the atress intensity, improve shock resistance and shear effect, the strengthening rib of right angle trapezoidal form can improve the ability of shearing with the vertical direction of the handling dispersion of connecting face department to adopt the anti-shear reinforcing bar can not influence the condition of pouring of concrete.
In addition, in the embodiment, the 8 corners of the section of the T-shaped steel beam are limited, so that the connection surface of the steel beam and the steel column is ensured to be more reliable, the connection surface of the steel beam and the steel column is prevented from being broken and displaced during vibration, and the reliability of the beam-column joint can be improved by matching the shearing resistant mechanism.
Claims (7)
1. The utility model provides a steel pipe concrete beam column connection structure for building, includes steel core concrete column and outsourcing U-shaped steel, the steel core concrete column includes upper segment steel-pipe column and hypomere steel-pipe column, its characterized in that: a shear-resistant mechanism is arranged between the upper-section steel pipe column and the lower-section steel pipe column, the shear-resistant mechanism comprises a connecting plate, the connecting plate is provided with an inner hole, and four symmetrical air holes are formed in the connecting plate around the inner hole; the inner hole edge is welded with an intermediate steel cylinder, the intermediate steel cylinder extends to the upper part of a connecting plate and is positioned in the inner cavity of the upper section of steel pipe column, part of the intermediate steel cylinder extends to the lower part of the connecting plate and is positioned in the lower section of steel pipe column, the inner wall of the intermediate steel cylinder is welded with a plurality of shear-resistant reinforcing steel bars, the shear-resistant reinforcing steel bars extend upwards and downwards from the intermediate steel cylinder respectively, the extending parts of the shear-resistant reinforcing steel bars are provided with stirrups, the stirrups are provided with a plurality of sections along the circumferential direction, the end part of each section of the stirrup is wound with the shear-resistant reinforcing steel bar and then extends outwards, and the included angle of the extending part between two adjacent sections of the stirrups is not more than 90 degrees by adopting steel;
reinforcing structures are respectively arranged between the upper plate surface of the connecting plate and the outer wall of the middle steel cylinder and between the lower plate surface of the connecting plate and the outer wall of the middle steel cylinder, the reinforcing structures are arranged along the circumferential direction, each reinforcing structure comprises a bottom plate welded with the upper plate surface or the lower plate surface of the connecting plate, one side of each bottom plate is abutted against the outer wall of the middle steel cylinder, each reinforcing structure also comprises a right-angled trapezoidal reinforcing rib, each right-angled trapezoidal reinforcing rib is vertically arranged along the axial direction of the middle steel cylinder, a right-angled waist is welded with the bottom plate, and the lower bottom of each reinforcing rib is welded with the outer wall of the middle steel cylinder; the outer diameter of the middle steel cylinder is smaller than the inner diameter of the inner cavity of the steel tube concrete column, the radial length of the reinforcing structure is not more than the distance between the outer wall of the middle steel cylinder and the inner cavity of the steel tube concrete column, and the length of the extending part of the stirrup is not more than the distance between the shear resistant steel bar and the inner cavity of the steel tube concrete column;
the connecting plate is welded with the upper section steel pipe column and the lower section steel pipe column respectively, two sides of the connecting plate extend out of the steel pipe concrete column, negative-moment steel bars are welded to the extending parts respectively, and the outer-wrapped U-shaped steel is welded to the outer walls of two opposite sides of the lower section steel pipe column and is located below the negative-moment steel bars.
2. A steel pipe concrete beam column connection structure for construction as claimed in claim 1, wherein: the stirrups are divided into odd-numbered segments along the circumferential direction.
3. A steel pipe concrete beam column connection structure for construction as claimed in claim 2, wherein: the stirrup is divided into 3-11 sections along the circumferential direction.
4. A steel pipe concrete beam column connection structure for construction as claimed in claim 3, wherein: the reinforcing structures arranged on the upper plate surface of the connecting plate are odd, and the reinforcing structures arranged on the lower plate surface of the connecting plate are odd.
5. A steel pipe concrete beam column connection structure for construction as claimed in claim 4, wherein: 3-15 reinforcing structures are arranged on the upper plate surface of the connecting plate, 3-15 reinforcing structures are arranged on the lower plate surface of the connecting plate, and the reinforcing structures on the upper plate surface are opposite to the reinforcing structures on the lower plate surface.
6. A steel pipe concrete beam column connection structure for construction as claimed in claim 5, wherein: the number of the reinforcing structures on the upper plate surface of the connecting plate is the same as that of the reinforcing structures on the lower plate surface of the connecting plate, the number of the sections of the stirrups is divided along the circumference, and the reinforcing structures on the upper plate surface of the connecting plate and the reinforcing structures on the lower plate surface of the connecting plate are arranged up and down oppositely and are positioned in the middle of the stirrup section.
7. A steel pipe concrete beam column connection structure for construction as claimed in claim 6, wherein: and a concrete through hole is formed in the connecting plate between two adjacent reinforcing structures.
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| CN202110062265.4A CN112922153B (en) | 2021-01-18 | 2021-01-18 | Steel pipe concrete beam column connection structure for building |
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| CN202110062265.4A CN112922153B (en) | 2021-01-18 | 2021-01-18 | Steel pipe concrete beam column connection structure for building |
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| CN210507829U (en) * | 2019-06-13 | 2020-05-12 | 广东省建筑设计研究院 | Assembly type building connecting node of steel pipe concrete column-precast concrete composite beam |
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2021
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| TW200532079A (en) * | 2004-03-30 | 2005-10-01 | You-Feng Li | Beam-column joint having reinforcing bars surrounded by steel cable and working process thereof |
| CN104562922A (en) * | 2015-01-06 | 2015-04-29 | 大连理工大学 | Locally-embedded steel pipe concrete column type aseismatic bridge pier |
| CN209384444U (en) * | 2018-12-28 | 2019-09-13 | 安徽华盛国际建筑设计工程咨询有限公司 | A kind of fabricated shear wall vertical connection structure |
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| CN112922153B (en) | 2022-09-16 |
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