CN112211297B - Node between top of steel tube concrete column and sandwich concrete composite slab and construction method - Google Patents
Node between top of steel tube concrete column and sandwich concrete composite slab and construction method Download PDFInfo
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- CN112211297B CN112211297B CN202011255372.0A CN202011255372A CN112211297B CN 112211297 B CN112211297 B CN 112211297B CN 202011255372 A CN202011255372 A CN 202011255372A CN 112211297 B CN112211297 B CN 112211297B
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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
- E04B1/18—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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
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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
- E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
- E04B1/4171—Nailable or non-threaded screwable elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The joint comprises a steel pipe concrete column, a sandwich concrete composite plate and a connecting steel plate, wherein when the steel plate and a bolt are in matched connection, the joint also comprises supporting angle steel, pre-buried bolts, pre-welded screws and bolts, and when the joint is in matched connection with a flange plate and a high-strength bolt, the joint also comprises the flange plate and the high-strength bolt; the method comprises the steps of manufacturing a steel pipe concrete column, a sandwich concrete composite plate and supporting angle steel when a steel plate and a bolt are in matched connection, installing the steel pipe concrete column in place, installing the supporting angle steel, screwing a pre-buried bolt and a nut of a pre-welded screw, hoisting the sandwich concrete composite plate in place, pouring concrete in a bolt reserved hole, installing the steel pipe concrete column in place when a flange plate and a high-strength bolt are in matched connection, hoisting the sandwich concrete composite plate in place, installing the high-strength bolt, screwing the nut, and pouring concrete in the bolt reserved hole.
Description
Technical Field
The invention belongs to the technical field of constructional engineering, and particularly relates to a concrete filled steel tubular column top and sandwich concrete composite slab node and a construction method.
Background
The column plate structure is a house structure of a bearing system consisting of columns and floor slabs, is a special condition of a frame structure, and is mainly made of reinforced concrete materials. Because the beam is not arranged below the indoor floor slab with the plate column structure, the electromechanical pipeline arrangement is convenient, the building floor height can be reduced, and the slab has the advantages of smooth and concise space, flexible planar arrangement and the like. The column plate structure is suitable for multi-storey factory buildings, warehouses, lobbies of public buildings, office buildings, houses and the like.
At present, the construction process of the column plate structure mainly comprises on-site wet operation, but cast-in-situ construction can not only cause the problems of serious environmental pollution, noise pollution and the like, but also mostly comprises manual operation on the construction site, so that the labor efficiency is low and the construction period is long. Along with the development of economy, the cast-in-situ construction means cannot meet the demands of people for life quality and housing quality, and the assembled structure changes the consumption of resources and the influence on environment of the traditional building mode, thereby having outstanding advantages in the aspects of construction, quality and the like. The assembled structure is produced in a factory through standardization, so that the on-site cast-in-situ operation is greatly reduced, and the labor productivity is remarkably improved. The assembly type building error reaches millimeter level, the components are produced in a factory, and the quality is greatly improved. The concrete column and concrete slab, steel column and concrete slab structure commonly used in building structure need the post to have characteristics such as shock resistance is good, ductility is good, bearing capacity is strong, construction is fast. Therefore, research and development of a reasonable column plate connection technology is necessary.
The steel pipe concrete column is a column structure formed by pouring concrete into the steel pipe, has the advantages of good earthquake resistance, light dead weight, good plasticity, fatigue resistance, impact resistance and the like compared with the common concrete column structure, and the steel pipe provides templates for the concrete, so that the problem of consumed materials of a large number of templates can be effectively solved.
The sandwich concrete composite board is a novel composite board for connecting two steel plates and the concrete inside the steel plates through a shear connector, and has the advantages of high bearing capacity, high rigidity, good ductility, fatigue resistance and the like.
Therefore, the plate column structure of the steel tube concrete column and the sandwich concrete composite plate can fully utilize the respective structural characteristics, and further improve the side force rigidity and the anti-seismic performance of the plate column structure. But in particular in what way it is critical to connect the top of the concrete filled steel tubular column with the sandwich concrete composite panel.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides the steel pipe concrete column top and sandwich concrete composite slab node and the construction method, which can ensure the stable connection of the steel pipe concrete column top and the sandwich concrete composite slab, simultaneously give consideration to the construction efficiency and economic benefit, avoid the problems of heavy concrete floor slab, low strength and high steel structure cost, reduce the structure dead weight and improve the integrity, stability and shock resistance of the slab column structure.
The technical scheme is that the joint of the top of the steel tube concrete column and the sandwich concrete composite plate adopts a steel plate and stud cooperation connection mode, the joint comprises the steel tube concrete column, the sandwich concrete composite plate, supporting angle steel, a connecting steel plate, embedded bolts, pre-welding screws and studs, the connecting steel plate is fixedly arranged on the top of the steel tube concrete column in a horizontal welding mode, the supporting angle steel is positioned between the connecting steel plate and the sandwich concrete composite plate, vertical limbs of the supporting angle steel are fixedly connected with the steel tube concrete column through the embedded bolts, horizontal limbs of the supporting angle steel are fixedly connected with the connecting steel plate through the pre-welding screws, a plurality of studs are uniformly distributed on the upper surface of the connecting steel plate, the studs are vertically arranged, the bottom ends of the studs are fixedly connected with the upper surface of the connecting steel plate in a welding mode, a plurality of stud reserved holes are formed in the sandwich concrete composite plate, the stud reserved holes are identical in number and correspond to the studs in position, and post-cast concrete is poured in the stud reserved holes.
The construction method of the steel tube concrete column top and sandwich concrete composite slab node comprises the following steps:
step one, manufacturing a steel pipe concrete column, a sandwich concrete composite plate and supporting angle steel;
① . When the steel tube concrete column is manufactured, firstly, selecting a column body steel tube according to design requirements, then, processing a specified number of reserved bolt holes at a set position of the top of the column body steel tube, then, installing embedded bolts in each reserved bolt hole, exposing the column body steel tube outside a screw rod of each embedded bolt, and pouring concrete into the column body steel tube until the concrete is solidified and formed to form column body concrete;
② . When the sandwich concrete composite slab is manufactured, two steel plates are selected according to design requirements, a specified number of stud preformed holes are processed at set positions on the two steel plates, embedded parts for enhancing the bonding effect with concrete are welded on the inner surfaces of the two steel plates, a formwork is completed, stud preformed hole forming dies are arranged in the formwork, and finally concrete is poured in the formwork until the concrete is solidified and formed;
③ . When the supporting angle steel is manufactured, firstly selecting straight angle steel as the supporting angle steel according to the design size, and then processing a specified number of reserved bolt holes at the set positions on the horizontal limb and the vertical limb of the supporting angle steel;
Step two, mounting and positioning the manufactured concrete filled steel tube column to a designated position;
Step three, the manufactured supporting angle steel is sent to a designated position at the top of the steel tube concrete column, the pre-welded screw rod on the lower surface of the connecting steel plate is ensured to accurately penetrate through the reserved bolt hole on the horizontal limb of the supporting angle steel, and meanwhile, the pre-buried bolt on the steel tube concrete column is ensured to accurately penetrate through the reserved bolt hole on the vertical limb of the supporting angle steel;
installing and tightening nuts on the pre-welded screw rods, and installing and tightening nuts on the pre-embedded bolts until the supporting angle steel is fixed on the concrete filled steel tube column;
Hoisting and lifting the manufactured sandwich concrete assembly plate to the position above the top of the steel pipe concrete column, aligning the stud reserved holes on the sandwich concrete assembly plate with the studs on the upper surface of the connecting steel plate, and then controlling the sandwich concrete assembly plate to descend until the sandwich concrete assembly plate accurately falls on the upper surface of the connecting steel plate, and simultaneously enabling the studs to enter the stud reserved holes;
And step six, pouring concrete into the peg preformed holes until the concrete is solidified and formed, and forming post-pouring concrete, so that the assembly is completed.
The joint of the top of the steel tube concrete column and the sandwich concrete composite plate adopts a mode of matching and connecting a flange plate with high-strength bolts, and comprises the steel tube concrete column, the sandwich concrete composite plate, a connecting steel plate, a flange plate and the high-strength bolts, wherein the connecting steel plate is fixedly arranged at the top of the steel tube concrete column in a horizontal welding mode, the flange plate is fixedly arranged on the lower surface of the sandwich concrete composite plate in a horizontal welding mode, the sandwich concrete composite plate, the flange plate, the connecting steel plate and the steel tube concrete column are sequentially distributed from top to bottom, bolt reserved holes are formed between the sandwich concrete composite plate, the flange plate and the connecting steel plate, the high-strength bolts penetrate through the bolt reserved holes, the sandwich concrete composite plate, the flange plate and the connecting steel plate are fixedly connected together through the high-strength bolts, and post-cast concrete is poured in the bolt reserved holes.
The construction method of the steel tube concrete column top and sandwich concrete composite slab node comprises the following steps:
Step one, manufacturing a concrete filled steel tubular column and a sandwich concrete composite plate;
① . When the steel tube concrete column is manufactured, firstly, selecting a column body steel tube according to design requirements, then pouring concrete into the column body steel tube until the concrete is solidified and formed, and forming column body concrete;
② . When the sandwich concrete combined plate is manufactured, two steel plates are selected according to design requirements, a set number of bolt preformed holes are processed at set positions on the two steel plates, embedded parts for enhancing the bonding effect with concrete are welded on the inner surfaces of the two steel plates, a flange plate is selected according to design dimensions, a set number of bolt preformed holes are processed at the set positions on the flange plate, the flange plate is stacked on the lower surface of the bottom steel plate, the bolt preformed holes between the flange plate and the bottom steel plate are ensured to be aligned, the flange plate is welded on the bottom steel plate, a formwork is completed, a bolt preformed hole forming die is arranged in the formwork, and concrete is poured in the formwork until the concrete is solidified and formed;
Step two, mounting and positioning the manufactured concrete filled steel tube column to a designated position;
Hoisting and lifting the manufactured sandwich concrete composite plate to the position above the top of the steel pipe concrete column, aligning the bolt reserved holes on the sandwich concrete composite plate with the bolt reserved holes on the connecting steel plate, and controlling the sandwich concrete composite plate to descend until the sandwich concrete composite plate accurately falls on the upper surface of the connecting steel plate;
Step four, loading high-strength bolts into each bolt reserved hole and tightening nuts;
And fifthly, pouring concrete into the reserved holes of the bolts until the concrete is solidified and formed, and forming post-pouring concrete, so that the assembly is completed.
The invention has the beneficial effects that:
According to the steel tube concrete column top and sandwich concrete composite slab node and the construction method, the steel tube concrete column top and sandwich concrete composite slab are stably connected, meanwhile, the construction efficiency and the economic benefit can be considered, the problems of heavy concrete floor slab, low strength and high steel structure cost are avoided, the structural dead weight is reduced, and the integrity, the stability and the shock resistance of the slab column structure are improved.
Drawings
FIG. 1 is a schematic structural view of a joint (adopting a steel plate and stud matched connection mode) of a concrete filled steel tubular column top and a sandwich concrete composite plate;
FIG. 2 is a cross-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 schematic structural view of a sandwich concrete composite slab (with steel plates and studs in mating connection) according to the present invention;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a schematic structural view of a joint of a concrete filled steel tubular column top and a sandwich concrete composite panel (in a manner of matching and connecting a flange plate and a high-strength bolt);
FIG. 7 is a section view D-D of FIG. 6;
FIG. 8 is a section E-E of FIG. 6;
FIG. 9 is a sectional view of F-F in FIG. 6 (square steel tube for column steel tube);
FIG. 10 is a sectional view of F-F in FIG. 6 (the column steel pipe is a round steel pipe);
FIG. 11 is a schematic structural view of a sandwich concrete composite panel (with a flange and high strength bolts cooperatively connected);
FIG. 12 is a section view of the graph G-G of FIG. 12;
in the figure, 1-steel tube concrete column, 2-pegs, 3-column body steel tube, 4-embedded bolts, 5-post-cast concrete, 6-sandwich concrete composite slab, 7-connecting steel plate, 8-supporting angle steel, 9-pre-welded screw rod, 10-peg preformed hole, 11-column body concrete, 12-high strength bolts, 13-flange plate and 14-bolt preformed hole.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
The joint of the steel tube concrete column top and the sandwich concrete composite plate is formed by adopting a steel plate and stud matching connection mode, and comprises a steel tube concrete column 1, a sandwich concrete composite plate 6, supporting angle steels 8, a connecting steel plate 7, embedded bolts 4, pre-welded screws 9 and studs 2, wherein the connecting steel plate 7 is fixedly arranged on the steel tube concrete column 1 top in a horizontal welding mode, the supporting angle steels 8 are positioned between the connecting steel plate 7 and the sandwich concrete composite plate 6, vertical limbs of the supporting angle steels 8 are fixedly connected with the steel tube concrete column 1 through the embedded bolts 4, horizontal limbs of the supporting angle steels 8 are fixedly connected with the connecting steel plate 7 through the pre-welded screws 9, a plurality of studs 2 are uniformly distributed on the upper surface of the connecting steel plate 7, the studs 2 are vertically arranged, the bottom ends of the studs 2 are fixedly connected with the upper surface of the connecting steel plate 7 in a welding mode, a plurality of stud reserved holes 10 are formed in the sandwich concrete composite plate 6, the stud reserved holes 10 correspond to the stud 2 in number and in position, and the stud reserved holes 10 are cast in one-to-one mode, and the stud reserved holes 5 are cast in the sandwich concrete composite plate 6.
The construction method of the steel tube concrete column top and sandwich concrete composite slab node comprises the following steps:
Firstly, manufacturing a concrete filled steel tube column 1, a sandwich concrete composite plate 6 and supporting angle steel 8;
① . When the steel tube concrete column 1 is manufactured, firstly, a column body steel tube 3 is selected according to design requirements, then a preset number of reserved bolt holes are processed at a set position on the top of the column body steel tube 3, then, embedded bolts 4 are installed in each reserved bolt hole, the screw rods of the embedded bolts 4 are exposed out of the column body steel tube 3, then, concrete is poured into the column body steel tube 3 until the concrete is solidified and formed, and column body concrete 11 is formed;
② . When the sandwich concrete composite plate 2 is manufactured, two steel plates are selected according to design requirements, a specified number of stud preformed holes 10 are processed at set positions on the two steel plates, embedded parts for enhancing the bonding effect with concrete are welded on the inner surfaces of the two steel plates, a formwork is completed, a stud preformed hole 10 forming die is arranged in the formwork, and finally concrete is poured in the formwork until the concrete is solidified and formed;
③ . When the support angle steel 8 is manufactured, firstly selecting straight angle steel as the support angle steel 8 according to the design size, and then processing a specified number of reserved bolt holes at the set positions on the horizontal limbs and the vertical limbs of the support angle steel 8;
Step two, mounting and positioning the manufactured concrete filled steel tube column 1 to a designated position;
Step three, the manufactured support angle steel 8 is sent to a designated position at the top of the steel tube concrete column 1, the pre-welded screw 9 on the lower surface of the connecting steel plate 7 is ensured to accurately penetrate through the reserved bolt hole on the horizontal limb of the support angle steel 8, and meanwhile, the pre-buried bolt 4 on the steel tube concrete column 1 is ensured to accurately penetrate through the reserved bolt hole on the vertical limb of the support angle steel 8;
installing and tightening nuts on the pre-welding screw rods 9, and simultaneously installing and tightening nuts on the pre-embedded bolts 4 until the supporting angle steel 8 is fixed on the steel tube concrete column 1;
hoisting and lifting the manufactured sandwich concrete composite plate 2 to the position above the top of the concrete filled steel tube column 1, aligning the stud reserved holes 10 on the sandwich concrete composite plate 2 with the studs 2 on the upper surface of the connecting steel plate 7, and then controlling the sandwich concrete composite plate 2 to descend until the sandwich concrete composite plate 2 accurately falls on the upper surface of the connecting steel plate 7, and simultaneously enabling the studs 2 to enter the stud reserved holes 10;
And step six, pouring concrete into the peg preformed holes 10 until the concrete is solidified and formed, and forming post-pouring concrete 5, so that the assembly is completed.
As shown in fig. 6-12, the joint of the top of the steel tube concrete column and the sandwich concrete composite plate adopts a mode of matching and connecting a flange plate and high-strength bolts, and comprises a steel tube concrete column 1, a sandwich concrete composite plate 6, a connecting steel plate 7, a flange plate 13 and high-strength bolts 12, wherein the connecting steel plate 7 is fixedly arranged on the top of the steel tube concrete column 1 in a horizontal welding mode, the flange plate 13 is fixedly arranged on the lower surface of the sandwich concrete composite plate 6 in a horizontal welding mode, the sandwich concrete composite plate 6, the flange plate 13, the connecting steel plate 7 and the steel tube concrete column 1 are sequentially distributed from top to bottom, bolt reserved holes 14 are formed among the sandwich concrete composite plate 6, the flange plate 13 and the connecting steel plate 7, the high-strength bolts 12 are penetrated into the bolt reserved holes 14, the sandwich concrete composite plate 6, the flange plate 13 and the connecting steel plate 7 are fixedly connected together through the high-strength bolts 12, and the post-cast concrete 5 is cast in the bolt reserved holes 14.
The construction method of the steel tube concrete column top and sandwich concrete composite slab node comprises the following steps:
Firstly, manufacturing a concrete filled steel tube column 1 and a sandwich concrete composite plate 6;
① . When the steel tube concrete column 1 is manufactured, firstly, selecting a column body steel tube 3 according to design requirements, then pouring concrete into the column body steel tube 3 until the concrete is solidified and formed, and forming column body concrete 11;
② . When the sandwich concrete composite plate 2 is manufactured, two steel plates are selected according to design requirements, a set number of bolt preformed holes 14 are processed at set positions on the two steel plates, embedded parts for enhancing the bonding effect with concrete are welded on the inner surfaces of the two steel plates, a flange plate 13 is selected according to design dimensions, a set number of bolt preformed holes 14 are processed at the set positions on the flange plate 13, the flange plate 13 is stacked on the lower surface of a bottom steel plate, the alignment of the bolt preformed holes 14 between the flange plate 13 and the bottom steel plate is ensured, the flange plate 13 is welded on the bottom steel plate;
Step two, mounting and positioning the manufactured concrete filled steel tube column 1 to a designated position;
Hoisting and lifting the manufactured sandwich concrete composite plate 2 to the position above the top of the concrete filled steel tubular column 1, aligning the bolt reserved holes 14 on the sandwich concrete composite plate 2 with the bolt reserved holes 14 on the connecting steel plate 7, and then controlling the sandwich concrete composite plate 2 to descend until the sandwich concrete composite plate 2 accurately falls on the upper surface of the connecting steel plate 7;
Step four, loading high-strength bolts 12 into each bolt reserved hole 14 and screwing nuts;
And fifthly, pouring concrete into the bolt reserved holes 14 until the concrete is solidified and formed, and forming post-pouring concrete 5, so that the assembly is completed.
The embodiments are not intended to limit the scope of the invention, but rather are intended to cover all equivalent implementations or modifications that can be made without departing from the scope of the invention.
Claims (4)
1. The joint is characterized by adopting a steel plate and stud matched connection mode, and comprises a steel pipe concrete column, a sandwich concrete composite plate, supporting angle steel, a connecting steel plate, embedded bolts, pre-welding screws and studs, wherein the connecting steel plate is fixedly arranged at the top of the steel pipe concrete column in a horizontal welding mode, the supporting angle steel is positioned between the connecting steel plate and the steel pipe concrete column, vertical limbs of the supporting angle steel are fixedly connected with the steel pipe concrete column through the embedded bolts, horizontal limbs of the supporting angle steel are fixedly connected with the connecting steel plate through the pre-welding screws, a plurality of studs are uniformly distributed on the upper surface of the connecting steel plate, the bottom ends of the studs are vertically arranged, the studs are fixedly connected with the upper surface of the connecting steel plate in a welding mode, a plurality of stud preformed holes are formed in the sandwich concrete composite plate, the stud preformed holes correspond to the studs in number and in position, and post-pouring concrete is poured in the stud preformed holes one by one.
2. The construction method of the steel pipe concrete column top and sandwich concrete composite slab node of claim 1, which is characterized by comprising the following steps:
step one, manufacturing a steel pipe concrete column, a sandwich concrete composite plate and supporting angle steel;
① . When the steel tube concrete column is manufactured, firstly, selecting a column body steel tube according to design requirements, then, processing a specified number of reserved bolt holes at a set position of the top of the column body steel tube, then, installing embedded bolts in each reserved bolt hole, exposing the column body steel tube outside a screw rod of each embedded bolt, and pouring concrete into the column body steel tube until the concrete is solidified and formed to form column body concrete;
② . When the sandwich concrete composite slab is manufactured, two steel plates are selected according to design requirements, a specified number of stud preformed holes are processed at set positions on the two steel plates, embedded parts for enhancing the bonding effect with concrete are welded on the inner surfaces of the two steel plates, a formwork is completed, stud preformed hole forming dies are arranged in the formwork, and finally concrete is poured in the formwork until the concrete is solidified and formed;
③ . When the supporting angle steel is manufactured, firstly selecting straight angle steel as the supporting angle steel according to the design size, and then processing a specified number of reserved bolt holes at the set positions on the horizontal limb and the vertical limb of the supporting angle steel;
Step two, mounting and positioning the manufactured concrete filled steel tube column to a designated position;
Step three, the manufactured supporting angle steel is sent to a designated position at the top of the steel tube concrete column, the pre-welded screw rod on the lower surface of the connecting steel plate is ensured to accurately penetrate through the reserved bolt hole on the horizontal limb of the supporting angle steel, and meanwhile, the pre-buried bolt on the steel tube concrete column is ensured to accurately penetrate through the reserved bolt hole on the vertical limb of the supporting angle steel;
installing and tightening nuts on the pre-welded screw rods, and installing and tightening nuts on the pre-embedded bolts until the supporting angle steel is fixed on the concrete filled steel tube column;
Hoisting and lifting the manufactured sandwich concrete assembly plate to the position above the top of the steel pipe concrete column, aligning the stud reserved holes on the sandwich concrete assembly plate with the studs on the upper surface of the connecting steel plate, and then controlling the sandwich concrete assembly plate to descend until the sandwich concrete assembly plate accurately falls on the upper surface of the connecting steel plate, and simultaneously enabling the studs to enter the stud reserved holes;
And step six, pouring concrete into the peg preformed holes until the concrete is solidified and formed, and forming post-pouring concrete, so that the assembly is completed.
3. The joint of the top of the steel tube concrete column and the sandwich concrete composite plate is characterized by adopting a mode of matching and connecting a flange plate with high-strength bolts, comprising the steel tube concrete column, the sandwich concrete composite plate, a connecting steel plate, the flange plate and the high-strength bolts, wherein the connecting steel plate is fixedly arranged at the top of the steel tube concrete column in a horizontal welding mode, the flange plate is fixedly arranged on the lower surface of the sandwich concrete composite plate in a horizontal welding mode, the sandwich concrete composite plate, the flange plate, the connecting steel plate and the steel tube concrete column are sequentially distributed from top to bottom, bolt preformed holes are formed between the sandwich concrete composite plate, the flange plate and the connecting steel plate, the high-strength bolts penetrate through the bolt preformed holes, the sandwich concrete composite plate, the flange plate and the connecting steel plate are fixedly connected together through the high-strength bolts, and post-cast concrete is poured in the bolt preformed holes.
4. A method of constructing a concrete filled steel tubular column top and sandwich concrete composite panel node of claim 3, comprising the steps of:
Step one, manufacturing a concrete filled steel tubular column and a sandwich concrete composite plate;
① . When the steel tube concrete column is manufactured, firstly, selecting a column body steel tube according to design requirements, then pouring concrete into the column body steel tube until the concrete is solidified and formed, and forming column body concrete;
② . When the sandwich concrete combined plate is manufactured, two steel plates are selected according to design requirements, a set number of bolt preformed holes are processed at set positions on the two steel plates, embedded parts for enhancing the bonding effect with concrete are welded on the inner surfaces of the two steel plates, a flange plate is selected according to design dimensions, a set number of bolt preformed holes are processed at the set positions on the flange plate, the flange plate is stacked on the lower surface of the bottom steel plate, the bolt preformed holes between the flange plate and the bottom steel plate are ensured to be aligned, the flange plate is welded on the bottom steel plate, a formwork is completed, a bolt preformed hole forming die is arranged in the formwork, and concrete is poured in the formwork until the concrete is solidified and formed;
Step two, mounting and positioning the manufactured concrete filled steel tube column to a designated position;
Hoisting and lifting the manufactured sandwich concrete composite plate to the position above the top of the steel pipe concrete column, aligning the bolt reserved holes on the sandwich concrete composite plate with the bolt reserved holes on the connecting steel plate, and controlling the sandwich concrete composite plate to descend until the sandwich concrete composite plate accurately falls on the upper surface of the connecting steel plate;
Step four, loading high-strength bolts into each bolt reserved hole and tightening nuts;
And fifthly, pouring concrete into the reserved holes of the bolts until the concrete is solidified and formed, and forming post-pouring concrete, so that the assembly is completed.
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