CN113374083A - Node structure of steel-recycled concrete composite beam and circular steel tube high-strength concrete column and construction method thereof - Google Patents
Node structure of steel-recycled concrete composite beam and circular steel tube high-strength concrete column and construction method thereof Download PDFInfo
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- CN113374083A CN113374083A CN202110566094.9A CN202110566094A CN113374083A CN 113374083 A CN113374083 A CN 113374083A CN 202110566094 A CN202110566094 A CN 202110566094A CN 113374083 A CN113374083 A CN 113374083A
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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
- E04B1/38—Connections for building structures in general
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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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
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The invention provides a node structure of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column and a construction method thereof.
Description
Technical Field
The invention relates to a node structure of a steel-recycled concrete composite beam and a circular steel tube high-strength concrete column and a construction method thereof, belonging to the technical field of composite structures.
Background
With the vigorous development of high-rise and super high-rise buildings, the size of the vertical bearing member is larger and larger, and the steel-concrete combined structure becomes the optimal choice gradually. Regarding the cross-sectional shape, square steel tube concrete is more regular, and the node structure is simple relatively, but round steel tube concrete's restraint effect, bearing capacity, shock resistance all are superior to square steel tube concrete, also adopt round steel tube concrete column in the actual engineering more.
The problems of exhaustion of sand and stone resources and disposal of waste concrete urge the regeneration of the recycled concrete, and the problems can be effectively alleviated by popularizing and using the recycled concrete in the beam-slab structure of a high-rise building, such as a steel-recycled concrete combined beam slab. The joint area of the steel-recycled concrete composite beam and the circular steel tube concrete column is of great importance, is a main stress area of the vertical bearing member and a negative bending moment area of the composite beam, and needs to ensure the integrity of the vertical bearing member and the bending resistance of the negative bending moment area of the composite beam as far as possible, ensure the effective transmission and diffusion of concentrated force, and meet the requirements of 'strong joints and weak rods'.
Disclosure of Invention
The invention provides a node structure of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column and a construction method thereof, aiming at solving the problem of connection between the steel-recycled concrete composite beam and the round steel tube concrete column in the background technology. The invention is designed for ensuring the integrity of a vertical bearing member and enhancing the bending resistance of a transverse stressed member, is mainly applied to high-rise and super high-rise buildings, and relates to a composite structure of a composite beam plate area, a square node area and a circular steel tube high-strength concrete column.
The invention provides a node structure of a steel-recycled concrete composite beam and a circular steel tube high-strength concrete column, which comprises a composite beam plate, square nodes and a circular steel tube high-strength concrete column, wherein the square nodes are vertically arranged outside the circular steel tube high-strength concrete column, the composite beam plate is fixedly connected with the square nodes,
the combined beam slab comprises a tensile steel plate, a tie bolt, concrete in the combined beam slab, a profiled steel plate, an upper stiffening L-shaped connecting plate and a lower stiffening L-shaped connecting plate; the tension bolt clamps and connects the tensile steel plate, the concrete in the combined beam plate and the profiled steel plate, and the steel beam is positioned below the profiled steel plate
The circular steel tube high-strength concrete column comprises circumferential stiffening ribs, vertical stiffening ribs, a circular steel tube and circular steel tube internal concrete, wherein the circular steel tube is internally poured with the circular steel tube internal concrete, the circular steel tube is internally and longitudinally provided with a plurality of vertical stiffening ribs, the circular steel tube is internally and transversely provided with the circumferential stiffening ribs,
the square node comprises an upper steel plate, a drawknot steel plate, a lower steel plate, a side steel plate and node inner concrete; a plurality of tie steel plates are horizontally arranged between the upper steel plate and the lower steel plate, the side steel plates are vertically and fixedly connected with the upper steel plate, the tie steel plates and the lower steel plate, node internal concrete is poured in a structure enclosed by the tie steel plates, the upper steel plate, the tie steel plates and the lower steel plate are vertically and fixedly connected with a round steel pipe,
the tensile steel plate is welded or bolted with the side steel plate through the upper stiffening L-shaped connecting plate, and the steel beam is welded or bolted with the side steel plate through the lower stiffening L-shaped connecting plate.
Preferably, a plurality of upper steel plate pouring holes are formed in the upper steel plate.
Preferably, the lower surface of the tensile steel plate is a rough surface with printed patterns, and a plurality of tensile steel plate pouring holes are formed in the tensile steel plate.
Preferably, the thicknesses of the upper steel plate, the drawknot steel plate, the lower steel plate and the side steel plate are not less than 10mm, the narrowest part of the lower steel plate is not less than 80mm, the length of the drawknot steel plate is not more than half of the width of the square node, and the height of the side steel plate is not less than 2 times of the height of the combined beam plate.
Preferably, the strength of the steel used by the tensile steel plate, the tie bolt, the upper stiffening L-shaped connecting plate, the lower stiffening L-shaped connecting plate, the upper steel plate, the tie steel plate, the lower steel plate, the side steel plate, the circumferential stiffening rib and the vertical stiffening rib is not lower than Q345.
Preferably, the drawknot bolt diameter is not less than 8 mm.
Preferably, the diameter of the round steel tube high-strength concrete column is not less than 1 m.
Preferably, the concrete in the steel tube and the concrete in the node are high-strength concrete or high-strength recycled concrete, the strength is greater than or equal to C60, and the concrete in the combined beam slab is recycled concrete with the strength of C30-C60.
Preferably, the thickness of the circumferential stiffening ribs and the vertical stiffening ribs is not more than half of that of the round steel pipe; the width is 1/10-1/5 of the diameter of the round steel tube.
Preferably, the steel tie plate is arranged at the height of the lower flange of the steel beam and at the height of the tensile steel plate respectively.
The construction method of the joint structure of the steel-recycled concrete composite beam and the round steel tube high-strength concrete column specifically comprises the following steps:
(1) firstly, manufacturing a circumferential stiffening rib plate and a vertical stiffening rib plate, respectively welding the circumferential stiffening rib plate and the vertical stiffening rib plate at corresponding positions inside a round steel pipe, welding two drawknot steel plates at a square node, then welding a side steel plate and the drawknot steel plates to fix the side steel plate, and finally welding an upper steel plate and a lower steel plate, wherein the processes are completed in advance in a factory;
(2) pouring concrete in the steel tube after welding is finished, if the design of the steel reinforcement cage is required to be put into the steel reinforcement cage, and then pouring concrete in the node through the upper steel plate pouring hole;
(3) the lower flange plate of the steel beam is welded or bolted with the lateral steel plate through the lower stiffening L-shaped connecting plate, other parts of the steel beam are welded with the lateral steel plate,
(4) and then completing formwork erection of the combined beam slab, welding or bolting the tensile steel plate with the side steel plates through a plurality of upper stiffening L-shaped connecting plates to fix the position, simply fixing the tensile steel plate with the profiled steel plate through the tie bolts, pouring concrete in the combined beam slab through the pouring holes of the tensile steel plate, and tightening the tie bolts after the concrete in the combined beam slab is hardened.
The invention provides a node structure of a steel-recycled concrete composite beam and a circular steel tube high-strength concrete column and a construction method thereof, which respectively strengthen the structure of a composite beam plate area, a square node and the circular steel tube high-strength concrete column so as to ensure the integrity of a vertical bearing member and the bending resistance of a hogging moment area of the composite beam, ensure the effective transmission and diffusion of concentrated force and meet the design requirements of 'strong nodes and weak rods', and the composite member has the following advantages:
(1) the invention gives full play to the respective advantages of the round steel tube concrete and the square steel tube concrete, and adopts the round steel tube high-strength concrete column as a main stress member to give play to the good constraint effect, the bearing capacity and the shock resistance; the node area adopts the appearance of square steel pipe concrete to provide good connection plane, exert the advantage that square cross-sectional shape is regular, easily connect.
(2) The invention effectively increases the height, area and rigidity of the node area. The height of the square node area is more than 2 times of the height of the combined beam connected with the square node area, the square node area surrounds the outer side of the circular steel tube, the area of the square node area is 1.3-1.8 times of that of the circular steel tube high-strength concrete column, the stress effect of a composite structure and multiple constraints is formed, and the height, the area and the rigidity of the node area are effectively increased respectively.
(3) The present invention provides a steel structure to guide the transmission and diffusion of concentrated force. The tensile steel plate is arranged on the upper surface of the composite beam plate close to the joint and can replace concrete to bear the tensile stress of the hogging moment area after being reliably connected with the composite plate; the combination beam and the node transition area are connected by adopting stiffening L-shaped steel plates from top to bottom, the tensile steel plates and the steel beam bottom are highly provided with the tie steel plates inside the square node, and the steel tube concrete column is internally provided with the circumferential stiffening ribs at the node height to guide the transmission and diffusion of two concentrated forces on the upper and lower parts of the section.
(4) The invention gives full play to the material performance of the confined concrete. The node does not damage the section of the concrete of the round steel pipe, and fully ensures that the concrete in the round steel pipe is in the best restraint state; forming a closed cavity in the square area of the node and pouring concrete to form three-phase confined concrete; arranging a tensile steel plate in the combined beam plate area close to the joint, so that the recycled concrete in the hogging moment area in the combined beam plate is positioned in the interlayer of the profiled steel plate and the tensile steel plate and is approximately in a restrained state; the tie bolts, the tie rib plates, the annular stiffening ribs and the vertical stiffening ribs are mutually extruded with adjacent concrete, and the interaction of the interfaces is further increased.
(5) The invention applies the recycled concrete to the area with lower mechanical requirement and larger dosage. The importance and mechanical requirements of the vertical bearing member and the beam column node are higher, and high-strength concrete or other high-performance concrete is adopted; the transverse bearing member has lower requirements on concrete, but has larger total consumption, and the recycled concrete using partially or totally recycled coarse aggregate, recycled fine aggregate or recycled micro powder can be applied in large quantity on the basis of meeting the use requirements, thereby promoting the development of green buildings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic perspective view of a joint structure of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column according to the present invention;
FIG. 2 is a schematic cross-sectional view of a joint structure of the steel-recycled concrete composite beam and the circular steel tube high-strength concrete column;
wherein, 1-tensile steel plate; 2-a tie bolt; 3-upper stiffening L-shaped connecting plate; 4-lower stiffening L-shaped connecting plate; 5-upper steel plate; 6-steel plate drawing; 7-lower steel plate; 8-side steel plate; 9-concrete in the node; 10-circumferential stiffening ribs; 11-vertical stiffeners; 12-round steel pipe; 13-concrete in the circular steel tube; 14-a steel beam; 15-profiled steel sheet; 16-concrete in the composite beam slab; 17-pouring holes in the tensile steel plates; 18-upper steel plate pouring hole.
Detailed Description
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:
the first embodiment is as follows: the present embodiment is explained with reference to fig. 1-2. The node structure of the steel-recycled concrete composite beam and the circular steel tube high-strength concrete column comprises a composite beam plate, square nodes and a circular steel tube high-strength concrete column, wherein the square nodes are vertically arranged outside the circular steel tube high-strength concrete column, the composite beam plate is fixedly connected with the square nodes,
the combined beam slab comprises a tensile steel plate 1, a tie bolt 2, concrete 16 in the combined beam slab, a profiled steel plate 15, an upper stiffening L-shaped connecting plate 3 and a lower stiffening L-shaped connecting plate 4; the tension bolt 2 clamps and connects the tension steel plate 1, the concrete 16 in the combined beam slab and the profiled steel plate 15, and the steel beam 14 is positioned below the profiled steel plate 15
The circular steel tube high-strength concrete column comprises circumferential stiffening ribs 10, vertical stiffening ribs 11, a circular steel tube 12 and circular steel tube internal concrete 13, wherein the circular steel tube 12 is internally poured with the circular steel tube internal concrete 13, the circular steel tube 12 is internally and longitudinally provided with a plurality of vertical stiffening ribs 11, the circular steel tube 12 is internally and transversely provided with the circumferential stiffening ribs 10,
the square node comprises an upper steel plate 5, a drawknot steel plate 6, a lower steel plate 7, a side steel plate 8 and node inner concrete 9; a plurality of tie steel plates 6 are horizontally arranged between the upper steel plate 5 and the lower steel plate 7, the side steel plates 8 are vertically and fixedly connected with the upper steel plate 5, the tie steel plates 6 and the lower steel plate 7, node inner concrete 9 is poured in a structure enclosed by the tie steel plates, the upper steel plate 5, the tie steel plates 6 and the lower steel plate 7 are vertically and fixedly connected with a round steel pipe 12,
the tensile steel plate 1 is welded or bolted with the lateral steel plate 8 through the upper stiffening L-shaped connecting plate 3, and the steel beam 14 is welded or bolted with the lateral steel plate 8 through the lower stiffening L-shaped connecting plate 4.
The upper steel plate 5 is provided with a plurality of upper steel plate pouring holes 18.
Tensile steel plate 1, tie bolt 2, upper portion L type connecting plate of putting more energy into 3, lower part L type connecting plate of putting more energy into 4, upper portion steel sheet 5, steel sheet 6, lower part steel sheet 7, side steel sheet 8, hoop stiffening rib 10 and the used steel intensity of vertical stiffening rib 11 are not less than Q345.
The diameter of the drawknot bolt 2 is not less than 8 mm. The diameter of the round steel pipe high-strength concrete column is not less than 1 m.
The concrete 13 in the steel tube and the concrete 9 in the node are high-strength concrete or high-strength recycled concrete, the strength is more than or equal to C60, and the concrete 16 in the combined beam slab is recycled concrete with the strength of C30-C60.
The steel tie plates 6 are respectively arranged at the lower flange height of the steel beam 14 and the height of the tensile steel plate 1.
The thickness and the distribution of the tensile steel plate 1 are calculated according to ' Combined structural design Specification ' (JGJ138-2016) ' as the area of the tensile steel bar, the lower surface is a rough surface with printed patterns, and the tensile steel plate pouring hole 17 is formed in the tensile steel plate 1.
The steel-recycled concrete composite beam and the circular steel tube high-strength concrete column are designed according to the size specification of a composite structure design specification (JGJ 138-2016).
Upper portion L type connecting plate 3 and the lower part of putting more energy into 4 steel sheet thickness of L type connecting plate of putting more energy into are not less than 10mm, and the height, the width and the position of the L type connecting plate 3 of putting more energy into on upper portion set up in a flexible way after setting aside connection space and pouring 17 positions in hole, and the 4 width of L type connecting plate of putting more energy into in lower part is than 14 wide 20mm of girder steel to set up multichannel stiffening rib.
The thicknesses of the upper steel plate 5, the drawknot steel plate 6, the lower steel plate 7 and the side steel plates 8 are not less than 10mm, the narrowest part of the lower steel plate 7 is not less than 80mm, the length of the drawknot steel plate 6 is not more than half of the width of a node, pouring holes 18 are formed in four corners of the upper steel plate 5, and the height of the side steel plates 8 is not less than 2 times of the height of the composite beam.
The thicknesses of the circumferential stiffening ribs 10 and the vertical stiffening ribs 11 are not more than half of the thickness of the circular steel tube 12; the width is 1/10-1/5 of the diameter of the round steel tube 12.
The circumferential stiffening ribs 10 are located at the center of the steel beam 14 and are high in height, and the vertical stiffening ribs 11 are located in the direction of the combined beam plate and welded on the inner wall of the circular steel tube 12 in a through-length mode.
The diameter of the round steel pipe high-strength concrete column is 1m or more, the square node is made into a square closed cavity and filled with concrete, on one hand, a good connecting plane is provided, and on the other hand, the height, the area and the rigidity of a node area are effectively increased.
The working principle of the joint structure of the steel-recycled concrete composite beam and the circular steel tube high-strength concrete column is as follows:
the advantages of square concrete-filled steel tube and round concrete-filled steel tube are combined, the node area of the round concrete-filled steel tube high-strength concrete column is made to be square, a good connecting plane is provided, the node area reinforcing mode is formed, the square area is formed into a closed cavity, concrete is poured, multiple constraints are formed in the node area, and the height, the area and the rigidity of the node are effectively increased.
The upper surface of a composite beam plate close to a node is provided with a tensile steel plate 1, the tensile steel plate can replace concrete to bear the tensile stress of a hogging moment area after being reliably connected with the composite beam plate, a plurality of stiffening L-shaped connecting plates are arranged above and below the transition area of the composite beam and the node, two tie steel plates 6 are arranged inside a square node, and an annular stiffening rib 10 and a vertical stiffening rib 11 are arranged inside a concrete filled steel tubular column to guide the transmission and diffusion of concentrated force at the node.
High-strength concrete or other high-performance concrete is adopted in the concrete 13 in the circular steel tube and the concrete 9 in the node, recycled concrete is adopted in the combined beam slab, and the concrete in the three areas is in a constraint state, so that the material performance of the concrete is fully exerted, the recycled concrete can be applied in a large amount on the basis of meeting the use requirement, and the application and development of a recycled concrete combined structure are promoted.
The construction method of the joint structure of the steel-recycled concrete composite beam and the circular steel tube high-strength concrete column comprises the following steps:
firstly, a plurality of annular stiffening rib plates 10 and vertical stiffening rib plates 11 are manufactured and respectively welded at corresponding positions inside a round steel pipe, the vertical stiffening rib plates 11 are required to be disconnected in rib plate crossing areas, the integrity of the annular stiffening rib plates 10 is kept, two tie steel plates 6 are welded in node areas, then side steel plates 8 and the tie steel plates 6 are welded to fix the side steel plates 8, and finally upper steel plates 5 and lower steel plates 7 are welded. And after welding, pouring concrete 13 in the steel tube, if the design of a reinforcement cage is required to be put into the steel tube, and then pouring concrete 9 in the node through the upper steel plate pouring hole 18.
Welding or bolting a lower flange plate of a steel beam 14 with a side steel plate 8 through a lower stiffening L-shaped connecting plate 4, if bolting is adopted, opening bolt holes in advance, welding other parts of the steel beam 14 with the side steel plate 8, then completing formwork support of the combined beam plate, welding or bolting a tensile steel plate 1 with the side steel plate 8 through a plurality of upper stiffening L-shaped connecting plates 3 to fix a position, simply fixing the tensile steel plate 1 with a profiled steel plate 15 through a tie bolt 2, pouring concrete 16 in the combined beam plate through a tensile steel plate pouring hole 17, and after the concrete 16 in the combined beam plate is hardened, screwing the tie bolt 2.
The invention aims to provide a node structure of a steel-recycled concrete composite beam and a circular steel tube high-strength concrete column, which ensures the integrity of a vertical bearing member and the bending resistance of a negative bending moment area of the composite beam by arranging structure reinforcement in a composite beam plate area, a square node and the circular steel tube high-strength concrete column, ensures the effective transmission and diffusion of concentrated force and meets the design requirements of 'strong nodes and weak rod pieces'. High-strength concrete or other high-performance concrete is adopted in the circular steel tube high-strength concrete column and the beam column joint, recycled concrete is adopted in the combined beam slab, and the concrete in the three areas is in a constraint state, so that the material performance of the concrete is fully exerted, and the recycled concrete can be widely applied on the basis of meeting the use requirement.
The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present invention in detail. It should be understood that the above-mentioned embodiments are only examples of the present invention, and are not intended to limit the present invention, and that the reasonable combination of the features described in the above-mentioned embodiments can be made, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The construction method of the joint structure of the steel-recycled concrete composite beam and the round steel tube high-strength concrete column is characterized by comprising the following steps of:
(1) firstly, manufacturing a circumferential stiffening rib (10) and a vertical stiffening rib (11), respectively welding the circumferential stiffening rib and the vertical stiffening rib at corresponding positions inside a circular steel tube (12), welding two tie steel plates (6) at a square node, then welding a side steel plate (8) and the tie steel plates (6) to fix the side steel plate (8), and finally welding an upper steel plate (5) and a lower steel plate (7), wherein the processes are finished in advance in a factory;
(2) after welding is finished, pouring concrete (13) in the circular steel tube, if the design of a steel reinforcement cage is required to be put in, and then pouring concrete (9) in the node is finished through an upper steel plate pouring hole (18);
(3) the lower flange plate of the steel beam (14) is welded or bolted with the lateral steel plate (8) through the lower stiffening L-shaped connecting plate (4), the other part of the steel beam (14) is welded with the lateral steel plate (8),
(4) and then completing formwork erection of the combined beam slab, welding or bolting the tensile steel plate (1) and the side steel plate (8) through a plurality of upper stiffening L-shaped connecting plates (3) to fix a position, fixing the tensile steel plate (1) and the profiled steel plate (15) through the tie bolts (2), pouring concrete (16) in the combined beam slab through the tensile steel plate pouring holes (17), and after the concrete (16) in the combined beam slab is hardened, screwing the tie bolts (2) tightly.
2. The joint structure of the steel-recycled concrete composite beam and the circular steel tube high-strength concrete column according to claim 1, which comprises a composite beam plate, square joints and a circular steel tube high-strength concrete column, wherein the square joints are vertically arranged outside the circular steel tube high-strength concrete column, the composite beam plate is fixedly connected with the square joints,
the combined beam slab comprises a tensile steel plate (1), a tie bolt (2), concrete (16) in the combined beam slab, a profiled steel plate (15), a steel beam (14), an upper stiffening L-shaped connecting plate (3) and a lower stiffening L-shaped connecting plate (4); the tension bolt (2) clamps and connects the tensile steel plate (1), the concrete (16) in the combined beam slab and the profiled steel plate (15), the steel beam (14) is positioned below the profiled steel plate (15),
the circular steel tube high-strength concrete column comprises circumferential stiffening ribs (10), vertical stiffening ribs (11), a circular steel tube (12) and circular steel tube internal concrete (13), wherein the circular steel tube (12) is internally poured with the circular steel tube internal concrete (13), a plurality of vertical stiffening ribs (11) are longitudinally arranged in the circular steel tube (12), the circumferential stiffening ribs (10) are transversely arranged in the circular steel tube (12),
the square node comprises an upper steel plate (5), a drawknot steel plate (6), a lower steel plate (7), a side steel plate (8) and node inner concrete (9); a plurality of tie steel plates (6) are horizontally arranged between the upper steel plate (5) and the lower steel plate (7), the side steel plates (8) are vertically and fixedly connected with the upper steel plate (5), the tie steel plates (6) and the lower steel plate (7), node inner concrete (9) is poured in a structure enclosed by the tie steel plates, the upper steel plate (5), the tie steel plates (6) and the lower steel plate (7) are vertically and fixedly connected with a round steel pipe (12),
the tensile steel plate (1) is welded or bolted with the side steel plate (8) through the upper stiffening L-shaped connecting plate (3), and the steel beam (14) is welded or bolted with the side steel plate (8) through the lower stiffening L-shaped connecting plate (4).
3. The node structure of the steel-recycled concrete composite beam and the round steel tube high-strength concrete column according to claim 2, wherein the lower surface of the tensile steel plate (1) is a rough surface with printed patterns, a plurality of tensile steel plate pouring holes (17) are formed in the tensile steel plate (1), and a plurality of upper steel plate pouring holes (18) are formed in the upper steel plate (5).
4. The node structure of the steel-recycled concrete composite beam and the round steel tube high-strength concrete column according to claim 2, wherein the thicknesses of the upper steel plate (5), the tie steel plate (6), the lower steel plate (7) and the side steel plate (8) are not less than 10mm, the narrowest part of the lower steel plate (7) is not less than 80mm, the length of the tie steel plate (6) is not more than half of the width of a square node, and the height of the side steel plate (8) is not less than 2 times of the height of the composite beam.
5. The node structure of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column according to claim 2, wherein the strength of steel used by the tensile steel plate (1), the tie bolt (2), the upper stiffening L-shaped connecting plate (3), the lower stiffening L-shaped connecting plate (4), the upper steel plate (5), the tie steel plate (6), the lower steel plate (7), the side steel plate (8), the hoop stiffening rib (10) and the vertical stiffening rib (11) is not lower than Q345.
6. The node construction of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column according to claim 2, wherein the tie bolt (2) has a diameter of not less than 8 mm.
7. The node structure of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column according to claim 2, wherein the diameter of the round steel tube high-strength concrete column is not less than 1 m.
8. The node structure of the steel-recycled concrete composite beam and the round steel tube high-strength concrete column according to claim 2, wherein the concrete (13) in the round steel tube and the concrete (9) in the node are high-strength concrete or high-strength recycled concrete with the strength of C60 or more, and the concrete (16) in the composite beam slab is recycled concrete with the strength of C30-C60.
9. The node construction of a steel-recycled concrete composite beam and a round steel tube high-strength concrete column according to claim 2, characterized in that the thickness of the circumferential stiffeners (10) and the vertical stiffeners (11) is not more than half of the thickness of the round steel tube (12); the width is 1/10-1/5 of the diameter of the round steel tube (12).
10. The node construction of a steel-recycled concrete composite beam and a circular steel tube high-strength concrete column according to claim 2, wherein the tie steel plates (6) are arranged at the height of the lower flange of the steel beam (14) and at the height of the tensile steel plate (1) in one step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110566094.9A CN113374083B (en) | 2021-05-24 | 2021-05-24 | Node structure of steel-recycled concrete composite beam and circular steel tube high-strength concrete column and construction method thereof |
Applications Claiming Priority (1)
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