CN107938843B - Prefabricated assembled frame adopting steel pipe concrete column and steel beam combination - Google Patents
Prefabricated assembled frame adopting steel pipe concrete column and steel beam combination Download PDFInfo
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- CN107938843B CN107938843B CN201710449674.3A CN201710449674A CN107938843B CN 107938843 B CN107938843 B CN 107938843B CN 201710449674 A CN201710449674 A CN 201710449674A CN 107938843 B CN107938843 B CN 107938843B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 347
- 239000010959 steel Substances 0.000 title claims abstract description 347
- 239000004567 concrete Substances 0.000 title claims abstract description 119
- 238000003466 welding Methods 0.000 claims abstract description 14
- 238000010276 construction Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract 1
- 238000003912 environmental pollution Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention provides a prefabricated assembled frame adopting a steel pipe concrete column and steel beam combination, which comprises a plurality of prefabricated steel pipe concrete columns and steel beams, wherein the connection between the columns is about 1.0 m-1.5 m above a floor, the columns and the steel beams are connected by adopting high-strength bolts and welding seams through an upper joint and a lower joint, and the columns and the steel beams are connected by adopting the high-strength bolts and the welding seams through corbels welded on the steel pipe concrete columns. The invention adopts the combination of the steel pipe concrete column and the steel beam, can reduce the cross section and the weight of the components, is convenient for transportation and installation, can increase the ductility of the structure and improves the earthquake resistance; the connection position reasonably avoids a node area with complex stress, and the node connection is simple and reliable; all the connections are dry operation, so that the construction conditions are improved, and the environmental pollution is reduced; by adopting the connection technology of the invention, the construction efficiency can be greatly improved.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a prefabricated assembled frame adopting a steel pipe concrete column and steel beam combination.
Background
The strongly developed prefabricated building has become a national strategy, the prefabricated concrete structure (PC structure) has been rapidly developed, and the frame structure is one of the most commonly used structural forms, and has wider application in the prefabricated structure. The existing PC frame structure is formed by prefabricating concrete columns and concrete beams in a factory and carrying out assembly connection on site through a wet operation method of integral post-pouring, and has the following defects: ① The component material is mainly reinforced concrete, has lower material strength, large section and large weight, and brings a plurality of inconveniences for prefabrication, transportation, hoisting and assembly; ② The number of reinforcing steel bars at the site assembly position is large, the connection structure is complex, and the construction quality is difficult to guarantee; ③ The wet connection is adopted, so that the process is complicated, dust emission is reduced, and pollution is reduced; ④ By adopting the integral post-pouring assembly method, after the concrete poured in situ reaches a certain strength, the construction of the next working procedure can be carried out, the technical intermittent time is long, and the efficiency is not beneficial to improvement.
The steel pipe concrete is a structural member which is filled with concrete and bears the action of external load together, and when the frame column is used, the advantages of the concrete and steel can be fully exerted, the bearing capacity of the member is obviously improved, and the ductility and the earthquake resistance of the structure are improved. The steel has high strength, strong deformability and isotropy, and is suitable for members such as beams mainly bearing bending moment when the section is made into an I shape or a box shape.
The steel pipe concrete and the steel beam are combined, so that the cross section size can be reduced, the weight of the component is reduced, and the steel pipe concrete has obvious effects of increasing the actual area of a building, reducing the layer height and reducing the transportation and installation cost. Meanwhile, the components are connected by adopting a dry method such as high-strength bolts, welding connection and the like, so that the quality is easy to control, and the efficiency is improved. Good comprehensive benefits can be obtained.
Disclosure of Invention
The invention provides a prefabricated assembled frame adopting a steel pipe concrete column and steel beam combination, which solves the problems in the prior art.
The technical scheme adopted for achieving the purpose of the invention is that the prefabricated assembled frame adopting the combination of the steel pipe concrete column and the steel beam is characterized by comprising an assembled frame formed by combining a plurality of prefabricated steel pipe concrete columns and prefabricated steel beams.
According to different positions, the steel tube concrete columns are divided into a bottom layer steel tube concrete column, a middle layer steel tube concrete column and a top layer steel tube concrete column.
The bottom layer steel tube concrete column comprises a steel tube I, concrete I, steel corbels I and an upper joint I.
The steel corbel I comprises an upper annular plate I, a lower annular plate I and four corbel webs I. The upper annular plate I and the lower annular plate I have the same structure, the centers of the upper annular plate I and the lower annular plate I are respectively provided with a through hole sleeved on the steel pipe I, and four branches are respectively arranged at the periphery of the through hole. After the upper annular plate I and the lower annular plate I are fixed on the steel pipe I, four branches of the upper annular plate I and the lower annular plate I respectively form four groups of flange plates around the steel pipe I, and each group of flange plates comprises an upper flange plate and a lower flange plate. Four bracket web I respectively cooperate with four group's flange boards, and every bracket web I all welds perpendicularly between an upper flange board and a lower flange board.
The upper joint I comprises an upper joint conical head I and an upper joint end plate I. The upper joint conical head I is a hollow revolution body with two open upper and lower ends. The upper joint end plate I is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the upper joint conical head I is nested and fixed at the upper end of the steel pipe I. The upper joint end plate I is welded at the lower end of the upper joint conical head I, and the central through hole of the upper joint end plate I is coaxial with the upper joint conical head I. And pouring concrete I into the steel pipe I and the upper joint conical head I through the central through hole of the upper joint end plate I.
The middle-layer steel tube concrete column comprises a steel tube II, concrete II, a steel bracket II, an upper ring plate II, a lower ring plate II, a bracket web II, an upper joint cone head II, an upper joint end plate II, a lower joint cone head II and a lower joint end plate II.
The steel corbel II comprises an upper ring plate II, a lower ring plate II and four corbel webs II. The upper ring plate II and the lower ring plate II have the same structure, the centers of the upper ring plate II and the lower ring plate II are respectively provided with a through hole sleeved on the steel pipe II, and four branches are respectively arranged at the four circumferences of the upper ring plate II and the lower ring plate II. After the upper ring plate II and the lower ring plate II are fixed on the steel pipe II, four branches of the upper ring plate II and the lower ring plate II respectively form four groups of flange plates around the steel pipe II, and each group of flange plates comprises an upper flange plate and a lower flange plate. Four bracket web II respectively cooperate with four group's flange boards, and every bracket web II all welds perpendicularly between an upper flange board and a lower flange board.
The upper joint II comprises an upper joint conical head II and an upper joint end plate II. The upper joint conical head II is a hollow revolving body with two open upper and lower ends. The upper joint end plate II is an annular plate with a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the upper joint conical head II is nested and fixed at the upper end of the steel pipe II. The upper joint end plate II is welded at the lower end of the upper joint conical head II, and the central through hole of the upper joint end plate II is coaxial with the upper joint conical head II.
The lower joint II comprises a lower joint conical head II and a lower joint end plate II. The lower joint cone II is a hollow revolution body with two open upper and lower ends. The lower joint end plate II is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the lower joint conical head II is nested and fixed at the lower end of the steel pipe II. The lower joint end plate II is welded at the lower end of the lower joint conical head II, and the central through hole of the lower joint end plate II is coaxial with the lower joint conical head II.
And pouring concrete II into the steel pipe II, the lower joint cone II and the upper joint cone II through the central through hole of the upper joint end plate II or the lower joint end plate II.
The top layer steel tube concrete column comprises a steel tube III, concrete III, steel corbels III, an upper cover plate, a lower annular plate III, corbel webs III, a lower joint conical head III and a lower joint end plate III.
The steel bracket III comprises an upper cover plate, a lower annular plate III and four bracket webs III. Four branches are arranged on the periphery of the upper cover plate and the periphery of the lower ring plate III, the outline shapes of the two sides are the same, and the center of the lower ring plate III is provided with a through hole sleeved on the steel pipe III. The lower ring plate III is fixed on the outer wall of the steel pipe III, and the upper cover plate covers and is fixed at the upper end of the steel pipe III. Four branches of the upper cover plate and the lower ring plate III respectively form four groups of flange plates around the steel pipe III, and each group of flange plates comprises an upper flange plate and a lower flange plate. Four bracket webs III are respectively matched with four groups of flange plates, and each bracket web III is vertically welded between one upper flange plate and one lower flange plate.
The lower joint III comprises a lower joint conical head III and a lower joint end plate III. The lower joint conical head III is a hollow revolving body with two open upper and lower ends. The lower joint end plate III is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the lower joint conical head III is nested and fixed at the lower end of the steel pipe II. The lower joint end plate III is welded at the lower end of the lower joint conical head III, and the central through hole of the lower joint end plate III is coaxial with the lower joint conical head III.
And pouring concrete III into the steel pipe III and the lower joint conical head III through the central through hole of the lower joint conical head III.
Each steel beam comprises an upper horizontal steel beam flange, a lower horizontal steel beam flange and a steel beam web vertically welded between the two steel beam flanges. And connecting holes for bolts to pass through are formed at two ends of the steel beam web plate.
When assembled:
The lower end of the middle layer steel tube concrete column and the upper end of the bottom layer steel tube concrete column form a joint between columns. In the inter-column joint, an upper joint end plate I is contacted with a lower joint end plate II, U-shaped notches of the upper joint end plate I and the lower joint end plate II are aligned, and a plurality of high-strength bolts I are adopted to connect the U-shaped notches of the upper joint end plate I and the lower joint end plate II. The lower end of the bottom layer steel tube concrete column is fixed on the foundation.
And a column-to-column joint is formed between the lower ends and the upper ends of the upper middle layer steel tube concrete column and the lower middle layer steel tube concrete column. In the inter-column joint, a lower joint end plate II of an upper middle layer steel tube concrete column is contacted with an upper joint end plate II of a lower middle layer steel tube concrete column, U-shaped gaps of the lower joint end plate II and the upper joint end plate II are aligned, and a plurality of high-strength bolts I are adopted to connect the U-shaped gaps of the upper joint end plate II and the upper joint end plate II.
And an inter-column joint is formed between the lower end of the top-layer steel tube concrete column and the upper end of the middle-layer steel tube concrete column. In the inter-column joint, a lower joint end plate III positioned above is contacted with an upper joint conical head II positioned below, U-shaped notches of the lower joint end plate III and the upper joint conical head II are aligned, and a plurality of high-strength bolts I are adopted to connect the U-shaped notches of the lower joint end plate III and the upper joint conical head II.
The steel corbel I of the bottom layer steel tube concrete column is connected with the steel cross beam, and a beam-column connecting node is formed. The connection mode of the beam and column connection node is as follows: and hoisting the steel beam to one side of the steel bracket I, and respectively placing a splicing cover plate on two sides of the steel beam web and the bracket web I. Each splice cover plate is provided with two rows of through holes for bolts to pass through. And one side of the steel beam web plate and the splicing cover plate is connected by adopting a plurality of high-strength bolts, and the other side of the steel corbel web plate and the splicing cover plate is also connected by adopting a plurality of high-strength bolts, namely the steel corbel I is connected with the steel beam. And the upper and lower horizontal steel beam flanges are respectively welded with the upper ring plate I and the lower ring plate I.
The steel corbel II of the middle layer steel tube concrete column is connected with the steel cross beam, and a beam-column connecting joint is formed. The connection mode of the beam and column connection node is as follows: and hoisting the steel beam to one side of a steel bracket II, and respectively placing a splicing cover plate on two sides of a steel beam web and the bracket web II. Each splice cover plate is provided with two rows of through holes for bolts to pass through. And one side of the steel beam web plate and the splicing cover plate is connected by adopting a plurality of high-strength bolts, and the other side of the steel corbel web plate and the splicing cover plate is also connected by adopting a plurality of high-strength bolts, namely the steel corbel II is connected with the steel beam. And the upper and lower horizontal steel beam flanges are respectively welded with the upper ring plate II and the lower ring plate II.
And the steel corbel III of the top steel tube concrete column is connected with the steel cross beam to form a beam-column connecting node. The connection mode of the beam and column connection node is as follows: and hoisting the steel beam to one side of a steel bracket III, and respectively placing a splicing cover plate on two sides of a steel beam web and the bracket web III. Each splice cover plate is provided with two rows of through holes for bolts to pass through. And one side of the steel beam web plate and the splicing cover plate is connected by adopting a plurality of high-strength bolts, and the other side of the steel corbel web plate and the splicing cover plate is also connected by adopting a plurality of high-strength bolts, namely the steel corbel III is connected with the steel beam. And the upper and lower horizontal steel beam flanges are respectively welded with the upper cover plate and the lower ring plate III.
Further, a plurality of assembled steel pipes are also included. The assembled steel pipe is formed by combining two semi-steel pipes. The two semi-steel pipes enclose the inter-column connection node from both sides. The gaps between the two semi-steel pipes are connected by adopting vertical welding seams, and then a complete assembled steel pipe is formed. The gap at the upper end of the assembled steel pipe is connected by adopting an upper transverse welding seam, and the lower end of the assembled steel pipe is connected by adopting a lower transverse welding seam.
Further, the steel beam flange is welded with the annular plate through butt welding seams.
Further, the inter-column connection node is located at a height of 1.0-1.5 meters above the floor.
Further, the number of branches of the steel corbels I, II and III is different depending on the position of the steel tube concrete column, the branches of the corner column are two, the branches of the side column are three, and the branches of the middle column are four.
The beneficial effects of the invention are as follows:
1. The steel pipe concrete column and the steel beam are adopted, so that the cross section size of the member is reduced, the weight of the member is lightened, and the transportation and hoisting cost is reduced.
2. The assembly of the column and the column is arranged near the middle of the floor with smaller internal force, which is beneficial to reducing the requirement of the assembly node, simplifying the structure of the assembly node and reducing the assembly difficulty.
3. The high-strength bolts and the welding connection are adopted in the field assembly, so that the detection is convenient, the quality is easy to control, the technical intermittence is not needed, the construction speed is improved, the dry method assembly is performed, the dust emission is reduced, and the pollution is reduced.
4. The ductility of the components and the nodes is improved, so that the assembled frame can be suitable for high-intensity earthquake-resistant areas.
Drawings
Fig. 1 is a schematic view of the overall structure of a fabricated frame.
Fig. 2 is a schematic view of an upper joint.
Fig. 3 is a schematic view of the lower joint.
FIG. 4 is a schematic view of a bottom layer concrete filled steel tubular column.
FIG. 5 is a schematic view of an intermediate layer steel core concrete column.
FIG. 6 is a schematic view of a top layer concrete filled steel tubular column.
Fig. 7 is a schematic view of the assembly of a concrete filled steel tubular column and a steel beam.
FIG. 8 is a schematic diagram of the assembly of the upper and lower concrete filled steel tubular columns.
In the figure: bottom layer steel tube concrete column 1, steel tube I101, concrete I102, steel bracket I103, upper annular plate I1031, lower annular plate I1032, bracket web I1033, upper joint I104, upper joint cone head I1041, upper joint end plate I1042,
Middle layer steel tube concrete column 2, steel tube II201, concrete II202, steel corbel II203, upper ring plate II2031, lower ring plate II2032, corbel web II2033, upper joint II204, upper joint cone II2041, upper joint end plate II2042, lower joint II205, lower joint cone II2051, lower joint end plate II2052, lower joint end plate II,
Top layer steel pipe concrete column 3, steel pipe III301, concrete III302, steel bracket III303, upper cover plate 3031, lower ring plate III3032, bracket web III3033, lower joint III304, lower joint cone III3041, lower joint end plate III3042, steel beam 4, steel beam flange 401, steel beam web 402,
Splice cover plate 10, high-strength bolt II11, backing plate 12 and weld joint 13
High-strength bolts I14, assembled steel pipes 15, upper transverse welds 16, lower transverse welds 17, and vertical welds 18.
Detailed Description
The present invention is further described below with reference to examples, but it should not be construed that the scope of the above subject matter of the present invention is limited to the following examples. Various substitutions and alterations are made according to the ordinary skill and familiar means of the art without departing from the technical spirit of the invention, and all such substitutions and alterations are intended to be included in the scope of the invention.
A prefabricated assembled frame adopting a steel pipe concrete column and steel beam combination is characterized by comprising an assembled frame formed by combining a plurality of prefabricated steel pipe concrete columns and prefabricated steel beams 4.
According to different positions, the steel tube concrete columns are divided into a bottom layer steel tube concrete column 1, a middle layer steel tube concrete column 2 and a top layer steel tube concrete column 3.
The bottom layer steel tube concrete column 1 comprises a steel tube I101, concrete I102, steel corbels I103 and an upper joint I104.
The steel corbel I103 comprises an upper annular plate I1031, a lower annular plate I1032 and four corbel webs I1033. The upper ring plate I1031 and the lower ring plate I1032 have the same structure, the center of the upper ring plate I1031 and the lower ring plate I1032 are respectively provided with a through hole sleeved on the steel pipe I101, and four branches are arranged on the periphery of the upper ring plate I1031 (further, the number of the branches of the steel bracket I103 is different according to the positions of the steel pipe concrete columns), the number of the branches of the corner columns is two, the number of the branches of the side columns is three, and the number of the branches of the middle column is four. After the upper ring plate I1031 and the lower ring plate I1032 are fixed on the steel pipe I101, four branches of the upper ring plate I1031 and the lower ring plate I1032 respectively form four groups of flange plates around the steel pipe I101, and each group of flange plates comprises an upper flange plate and a lower flange plate. Four bracket web I1033 cooperate with four group flange boards respectively, and each bracket web I1033 is welded perpendicularly between an upper flange board and a lower flange board.
The upper joint I104 includes an upper joint cone I1041 and an upper joint end plate I1042. The upper joint cone I1041 is a hollow revolving body (hollow round table) with two open ends. The upper joint end plate I1042 is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the upper joint conical head I1041 is nested and fixed at the upper end of the steel pipe I101. The upper joint end plate I1042 is welded at the lower end of the upper joint cone I1041, and the central through hole of the upper joint end plate I1042 is coaxial with the upper joint cone I1041. Through the central through hole of the upper joint end plate I1042, concrete I102 is poured into the steel pipe I101 and the upper joint conical head I1041.
The middle-layer steel tube concrete column 2 comprises a steel tube II201, concrete II202, a steel bracket II203, an upper ring plate II2031, a lower ring plate II2032, a bracket web II2033, an upper joint II204, an upper joint conical head II2041, an upper joint end plate II2042, a lower joint II205, a lower joint conical head II2051 and a lower joint end plate II2052.
The steel corbel II203 includes an upper ring plate II2031, a lower ring plate II2032, and four corbel webs II2033. The upper ring plate II2031 and the lower ring plate II2032 have the same structure, the center of the upper ring plate II2031 and the lower ring plate II2032 are respectively provided with a through hole sleeved on the steel pipe II201, and four branches are arranged on the periphery of the upper ring plate II (further, the number of the branches of the steel corbel II203 is different according to the positions of the steel pipe concrete columns), the number of the branches of the corner columns is two, the number of the branches of the side columns is three, and the number of the branches of the middle column is four. . After the upper ring plate II2031 and the lower ring plate II2032 are fixed on the steel pipe II201, four branches of the upper ring plate II2031 and the lower ring plate II2032 respectively form four groups of flange plates around the steel pipe II201, and each group of flange plates comprises an upper flange plate and a lower flange plate. Four bracket webs II2033 are respectively matched with four groups of flange plates, and each bracket web II2033 is vertically welded between one upper flange plate and one lower flange plate.
The upper joint II204 includes an upper joint cone II2041 and an upper joint end plate II2042. The upper joint conical head II2041 is a hollow revolving body (hollow round table) with two open ends. The upper joint end plate II2042 is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the upper joint conical head II2041 is nested and fixed at the upper end of the steel pipe II 201. The upper joint end plate II2042 is welded to the lower end of the upper joint cone II2041, and the central through hole of the upper joint end plate II2042 is coaxial with the upper joint cone II 2041.
The lower fitting II205 includes a lower fitting cone II2051 and a lower fitting end plate II2052. The lower joint cone II2051 is a hollow revolution body (hollow round table) with two open ends. The lower joint end plate II2052 is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the lower joint conical head II2051 is nested and fixed at the lower end of the steel pipe II 201. The lower joint end plate II2052 is welded at the lower end of the lower joint cone II2051, and the central through hole of the lower joint end plate II2052 is coaxial with the lower joint cone II 2051.
And pouring concrete II202 into the steel pipe II201, the lower joint conical head II2051 and the upper joint conical head II2041 through the central through hole of the upper joint end plate II2042 or the lower joint end plate II 2052.
The top-layer steel tube concrete column 3 comprises a steel tube III301, a concrete III302, a steel bracket III303, an upper cover plate 3031, a lower ring plate III3032, a bracket web III3033, a lower joint III304, a lower joint cone III3041 and a lower joint end plate III3042.
The steel bracket III303 includes an upper cover plate 3031, a lower ring plate III3032, and four bracket webs III3033. Four branches are arranged around the upper cover plate 3031 and the lower ring plate III3032 (further, the number of the branches of the steel bracket III303 is different according to the positions of the steel pipe concrete columns, the branches of the corner columns are two, the branches of the side columns are three, and the branches of the middle column are four). The outline shape of the two sides is the same, but the center of the lower ring plate III3032 is provided with a through hole sleeved on the steel pipe III 301. The lower ring plate 3032 is fixed to the outer wall of the steel pipe III301, and the upper cover plate 3031 covers and is fixed to the upper end of the steel pipe III 301. Four branches of the upper cover plate 3031 and the lower ring plate III3032 respectively form four groups of flange plates around the steel pipe III301, and each group of flange plates comprises an upper flange plate and a lower flange plate. Four bracket webs III3033 are respectively matched with four groups of flange plates, and each bracket web III3033 is vertically welded between one upper flange plate and one lower flange plate.
The lower joint III304 includes a lower joint cone III3041 and a lower joint end plate III3042. The lower joint cone III3041 is a hollow rotator (hollow truncated cone) with two open ends. The lower joint end plate III3042 is an annular plate having a through hole in the center. A plurality of U-shaped notches are uniformly distributed on the periphery of the outer circle of the whole annular plate. The large end of the lower joint cone III3041 is nested and fixed at the lower end of the steel pipe II 201. The lower joint end plate III3042 is welded to the lower end of the lower joint cone head III3041, and the central through hole of the lower joint end plate III3042 is coaxial with the lower joint cone head III 3041.
Concrete III302 is poured into the steel pipe III301 and the lower joint cone III3041 through the central through hole of the lower joint cone III 3041.
Each steel beam 4 comprises an upper and a lower horizontal steel beam flange 401 and a steel beam web 402 welded vertically between the two steel beam flanges 401. The steel beam web 402 has connection holes at both ends through which bolts pass.
When assembled, several inter-column nodes (reference number I) and beams, inter-column nodes (reference number II) are formed as shown in fig. 1:
The lower ends of the middle layer steel tube concrete columns 2 (in the upper and lower positions) and the upper ends of the bottom layer steel tube concrete columns 1 form inter-column joints. In the inter-column joint, an upper joint end plate I1042 is contacted with a lower joint end plate II2052, U-shaped notches of the upper joint end plate I1042 and the lower joint end plate II2052 are aligned, and a plurality of high-strength bolts I14 are adopted to connect the U-shaped notches of the upper joint end plate I and the lower joint end plate II. The lower end of the bottom layer steel tube concrete column 1 is fixed on a foundation.
And a column-to-column joint is formed between the lower ends and the upper ends of the upper middle layer steel tube concrete column 2 and the lower middle layer steel tube concrete column 2. In the inter-column joint, a lower joint end plate II2052 of an upper middle layer steel tube concrete column 2 is in contact with an upper joint end plate II2042 of a lower middle layer steel tube concrete column 2, U-shaped notches of the upper joint end plate II and the upper joint end plate II are aligned, and a plurality of high-strength bolts I14 are adopted to connect the U-shaped notches of the upper joint end plate II and the upper joint end plate II.
An inter-column joint is formed between the lower end of the top layer concrete filled steel tube column 3 (in the upper and lower positions) and the upper end of the middle layer concrete filled steel tube column 2. In the inter-column joint, a lower joint end plate III3042 positioned above is contacted with an upper joint conical head II2041 positioned below, U-shaped notches of the lower joint end plate III and the upper joint conical head II are aligned, and a plurality of high-strength bolts I14 are used for connecting the U-shaped notches of the lower joint end plate III and the upper joint conical head II.
Preferably, several assembled steel pipes 15 are also included. The assembled steel pipe 15 is formed by combining two semi-steel pipes. The two semi-steel pipes enclose the inter-column connection node from both sides. The upper end incision of the half steel pipe is vertical to the length direction, the lower end is provided with a groove, and two side edges are provided with grooves. The gap between the two semi-steel pipes is connected by a vertical weld 18, and then a complete assembled steel pipe 15 is formed. The upper end of the assembled steel pipe 15 is connected by an upper transverse welding seam 16, and the lower end is connected by a lower transverse welding seam 17. In an embodiment, the inter-column connection node is located 1.0-1.5 meters above the floor.
The steel corbel I103 of the bottom layer steel tube concrete column 1 is connected with the steel cross beam 4, and forms a beam-column connecting node. The connection mode of the beam and column connection node is as follows: the steel beam 4 is hoisted to one side of the steel bracket I103, and a splicing cover plate 10 is respectively placed on two sides of the steel beam web 402 and the bracket web I1033. Each splice cover plate 10 has two rows of through holes through which bolts pass. The steel beam web 402 and one side of the splice cover plate 10 are connected by a plurality of high strength bolts 11, and the steel corbel web 502 and the other side of the splice cover plate 10 are also connected by a plurality of high strength bolts 11, namely, the steel corbel I103 is connected with the steel beam 4. The upper and lower horizontal steel beam flanges 401 are respectively welded with the upper ring plate I1031 and the lower ring plate I1032.
The steel corbel II203 of the middle layer steel tube concrete column 2 is connected with the steel cross beam 4, and forms a beam-column connecting joint. The connection mode of the beam and column connection node is as follows: the steel beam 4 is hoisted to one side of the steel bracket II203, and a splicing cover plate 10 is respectively placed on two sides of the steel beam web 402 and the bracket web II 2033. Each splice cover plate 10 has two rows of through holes through which bolts pass. The steel beam web 402 and one side of the splice cover plate 10 are connected by a plurality of high strength bolts 11, and the steel corbel web 502 and the other side of the splice cover plate 10 are also connected by a plurality of high strength bolts 11, namely the steel corbel II203 is connected with the steel beam 4. The upper and lower horizontal steel beam flanges 401 are respectively welded with the upper ring plate II2031 and the lower ring plate II 2032.
The steel corbel III303 of the top steel tube concrete column 3 is connected with the steel cross beam 4, and forms a beam-column connecting node. The connection mode of the beam and column connection node is as follows: the steel beam 4 is hoisted to one side of the steel bracket III303, and a splicing cover plate 10 is respectively placed on two sides of the steel beam web 402 and the bracket web III 3033. Each splice cover plate 10 has two rows of through holes through which bolts pass. The steel beam web 402 and one side of the splice cover plate 10 are connected by a plurality of high strength bolts 11, and the steel corbel web 502 and the other side of the splice cover plate 10 are also connected by a plurality of high strength bolts 11, namely the steel corbel III303 is connected with the steel beam 4. The upper and lower horizontal steel beam flanges 401 are welded to the upper cover plate 3031 and the lower ring plate III3032, respectively.
Preferably, steel beam flange 401 is welded to ring plates (including upper ring plate I1031, lower ring plate I1032, upper ring plate II2031, lower ring plate II2032, upper cover plate 3031, lower ring plate III 3032) by butt welds 13.
Claims (5)
1. A prefabricated assembled frame combined by a concrete filled steel tube column and a steel beam is characterized by comprising an assembled frame formed by combining a plurality of prefabricated concrete filled steel tube columns and prefabricated steel beams (4);
according to different positions, the steel tube concrete column is divided into a bottom layer steel tube concrete column (1), a middle layer steel tube concrete column (2) and a top layer steel tube concrete column (3);
the bottom layer steel tube concrete column (1) comprises a steel tube I (101), concrete I (102), steel corbels I (103) and an upper joint I (104);
The steel corbel I (103) comprises an upper annular plate I (1031), a lower annular plate I (1032) and four corbel webs I (1033); the upper annular plate I (1031) and the lower annular plate I (1032) have the same structure, the centers of the upper annular plate I and the lower annular plate I are respectively provided with a through hole sleeved on the steel pipe I (101), and the four sides of the upper annular plate I are respectively provided with four branches; after the upper annular plate I (1031) and the lower annular plate I (1032) are fixed on the steel pipe I (101), four branches of the upper annular plate I (1031) and the lower annular plate I (1032) respectively form four groups of flange plates around the steel pipe I (101), and each group of flange plates comprises an upper flange plate and a lower flange plate; four bracket webs I (1033) are respectively matched with four groups of flange plates, and each bracket web I (1033) is vertically welded between one upper flange plate and one lower flange plate;
The upper joint I (104) comprises an upper joint conical head I (1041) and an upper joint end plate I (1042); the upper joint cone head I (1041) is a hollow revolving body with open upper and lower ends; the upper joint end plate I (1042) is an annular plate with a through hole in the center; a plurality of U-shaped notches are uniformly distributed around the outer circle of the whole annular plate; the large end of the upper joint cone head I (1041) is nested and fixed at the upper end of the steel pipe I (101); the upper joint end plate I (1042) is welded at the lower end of the upper joint conical head I (1041), and a central through hole of the upper joint end plate I (1042) is coaxial with the upper joint conical head I (1041); pouring concrete I (102) into the steel pipe I (101) and the upper joint cone I (1041) through the central through hole of the upper joint end plate I (1042);
the middle-layer steel tube concrete column (2) comprises a steel tube II (201), a concrete II (202), a steel bracket II (203), an upper ring plate II (2031), a lower ring plate II (2032), a bracket web II (2033), an upper joint II (204), an upper joint cone II (2041), an upper joint end plate II (2042), a lower joint II (205), a lower joint cone II (2051) and a lower joint end plate II (2052);
The steel corbel II (203) comprises an upper ring plate II (2031), a lower ring plate II (2032) and four corbel webs II (2033); the upper ring plate II (2031) and the lower ring plate II (2032) have the same structure, the centers of the upper ring plate II and the lower ring plate II are respectively provided with a through hole sleeved on the steel pipe II (201), and the circumferences of the upper ring plate II and the lower ring plate II are respectively provided with four branches; after the upper ring plate II (2031) and the lower ring plate II (2032) are fixed on the steel pipe II (201), four branches of the upper ring plate II (2031) and the lower ring plate II (2032) respectively form four groups of flange plates around the steel pipe II (201), and each group of flange plates comprises an upper flange plate and a lower flange plate; four bracket webs II (2033) are respectively matched with four groups of flange plates, and each bracket web II (2033) is vertically welded between one upper flange plate and one lower flange plate;
The upper joint II (204) comprises an upper joint conical head II (2041) and an upper joint end plate II (2042); the upper joint conical head II (2041) is a hollow revolving body with two open upper and lower ends; the upper joint end plate II (2042) is an annular plate with a through hole in the center; a plurality of U-shaped notches are uniformly distributed around the outer circle of the whole annular plate; the large end of the upper joint conical head II (2041) is nested and fixed at the upper end of the steel pipe II (201); the upper joint end plate II (2042) is welded at the lower end of the upper joint conical head II (2041), and a central through hole of the upper joint end plate II (2042) is coaxial with the upper joint conical head II (2041);
The lower joint II (205) comprises a lower joint conical head II (2051) and a lower joint end plate II (2052); the lower joint conical head II (2051) is a hollow revolving body with the upper end and the lower end open; the lower joint end plate II (2052) is an annular plate with a through hole in the center; a plurality of U-shaped notches are uniformly distributed around the outer circle of the whole annular plate; the large end of the lower joint conical head II (2051) is nested and fixed at the lower end of the steel pipe II (201); the lower joint end plate II (2052) is welded at the lower end of the lower joint conical head II (2051), and a central through hole of the lower joint end plate II (2052) is coaxial with the lower joint conical head II (2051);
pouring concrete II (202) into the steel pipe II (201), the lower joint cone II (2051) and the upper joint cone II (2041) through a central through hole of the upper joint end plate II (2042) or the lower joint end plate II (2052);
The top-layer steel tube concrete column (3) comprises a steel tube III (301), a concrete III (302), a steel bracket III (303), an upper cover plate (3031), a lower ring plate III (3032), a bracket web III (3033), a lower joint III (304), a lower joint cone III (3041) and a lower joint end plate III (3042);
The steel bracket III (303) comprises an upper cover plate (3031), a lower ring plate III (3032) and four bracket webs III (3033); four branches are arranged around the upper cover plate (3031) and the lower ring plate III (3032), the outline shapes of the two sides are the same, and the center of the lower ring plate III (3032) is provided with a through hole sleeved on the steel pipe III (301); a lower ring plate III (3032) is fixed on the outer wall of the steel pipe III (301), and the upper cover plate (3031) covers and is fixed on the upper end of the steel pipe III (301); four branches of the upper cover plate (3031) and the lower ring plate III (3032) respectively form four groups of flange plates around the steel pipe III (301), and each group of flange plates comprises an upper flange plate and a lower flange plate; four bracket webs III (3033) are respectively matched with four groups of flange plates, and each bracket web III (3033) is vertically welded between one upper flange plate and one lower flange plate;
The lower joint III (304) comprises a lower joint cone III (3041) and a lower joint end plate III (3042); the lower joint conical head III (3041) is a hollow revolving body with the upper end and the lower end open; the lower joint end plate III (3042) is an annular plate having a through hole in the center; a plurality of U-shaped notches are uniformly distributed around the outer circle of the whole annular plate; the large end of the lower joint conical head III (3041) is nested and fixed at the lower end of the steel pipe II (201); the lower joint end plate III (3042) is welded at the lower end of the lower joint cone head III (3041), and a central through hole of the lower joint end plate III (3042) is coaxial with the lower joint cone head III (3041);
Pouring concrete III (302) into the steel pipe III (301) and the lower joint cone III (3041) through the central through hole of the lower joint cone III (3041);
Each steel beam (4) comprises an upper horizontal steel beam flange (401) and a lower horizontal steel beam flange (401), and a steel beam web (402) vertically welded between the two steel beam flanges (401); the two ends of the steel beam web plate (402) are provided with connecting holes for bolts to pass through;
When assembled:
The lower end of the middle layer steel tube concrete column (2) and the upper end of the bottom layer steel tube concrete column (1) form a column-to-column joint; in the inter-column joint, an upper joint end plate I (1042) is contacted with a lower joint end plate II (2052), U-shaped notches of the upper joint end plate I and the lower joint end plate II are aligned, and a plurality of high-strength bolts I (14) are adopted to connect the U-shaped notches of the upper joint end plate I and the lower joint end plate II; the lower end of the bottom layer steel tube concrete column (1) is fixed on a foundation;
An inter-column node is formed between the lower ends and the upper ends of the upper middle layer steel tube concrete column (2) and the lower middle layer steel tube concrete column; in the inter-column joint, a lower joint end plate II (2052) of an upper middle layer steel tube concrete column (2) is contacted with an upper joint end plate II (2042) of a lower middle layer steel tube concrete column (2), U-shaped notches of the upper joint end plate II and the upper joint end plate II are aligned, and a plurality of high-strength bolts I (14) are adopted to connect the U-shaped notches of the upper joint end plate II and the upper joint end plate II;
An inter-column joint is formed between the lower end of the top layer steel tube concrete column (3) and the upper end of the middle layer steel tube concrete column (2); in the inter-column joint, a lower joint end plate III (3042) positioned above is contacted with an upper joint conical head II (2041) positioned below, U-shaped gaps of the lower joint end plate III and the upper joint conical head II are aligned, and a plurality of high-strength bolts I (14) are adopted to connect the U-shaped gaps of the lower joint end plate III and the upper joint conical head II;
The steel corbel I (103) of the bottom layer steel tube concrete column (1) is connected with the steel cross beam (4) and forms a beam-column connecting node; the connection mode of the beam and column connection node is as follows: hoisting a steel beam (4) to one side of a steel bracket I (103), and respectively placing a splicing cover plate (10) on two sides of a steel beam web plate (402) and a bracket web plate I (1033); each spliced cover plate (10) is provided with two rows of through holes for bolts to pass through; a plurality of high-strength bolts (11) are adopted to connect one side of the steel beam web plate (402) and one side of the splicing cover plate (10), and a plurality of high-strength bolts (11) are also adopted to connect the other side of the steel corbel web plate (502) and the other side of the splicing cover plate (10), namely the steel corbel I (103) is connected with the steel beam (4); an upper horizontal steel beam flange (401) and a lower horizontal steel beam flange (401) are respectively welded with an upper annular plate I (1031) and a lower annular plate I (1032);
The steel corbel II (203) of the middle layer steel tube concrete column (2) is connected with the steel cross beam (4) and forms a beam-column connecting joint; the connection mode of the beam and column connection node is as follows: hoisting a steel beam (4) to one side of a steel bracket II (203), and respectively placing a splicing cover plate (10) on two sides of a steel beam web plate (402) and a bracket web plate II (2033); each spliced cover plate (10) is provided with two rows of through holes for bolts to pass through; a plurality of high-strength bolts (11) are adopted to connect one side of the steel beam web plate (402) and one side of the splicing cover plate (10), and a plurality of high-strength bolts (11) are also adopted to connect the other side of the steel corbel web plate (502) and the other side of the splicing cover plate (10), namely the steel corbel II (203) is connected with the steel beam (4); an upper horizontal steel beam flange (401) and a lower horizontal steel beam flange (401) are respectively welded with an upper ring plate II (2031) and a lower ring plate II (2032);
The steel corbel III (303) of the top steel tube concrete column (3) is connected with the steel cross beam (4) and forms a beam-column connecting node; the connection mode of the beam and column connection node is as follows: hoisting a steel beam (4) to one side of a steel bracket III (303), and respectively placing a splicing cover plate (10) on two sides of a steel beam web (402) and a bracket web III (3033); each spliced cover plate (10) is provided with two rows of through holes for bolts to pass through; a plurality of high-strength bolts (11) are adopted to connect one side of the steel beam web plate (402) and one side of the splicing cover plate (10), and a plurality of high-strength bolts (11) are also adopted to connect the other side of the steel corbel web plate (502) and the other side of the splicing cover plate (10), namely the steel corbel III (303) is connected with the steel beam (4); the upper and lower horizontal steel beam flanges (401) are respectively welded with the upper cover plate (3031) and the lower ring plate III (3032).
2. A prefabricated assembled frame using a concrete filled steel tubular column and steel beam combination as claimed in claim 1, wherein: also comprises a plurality of assembly steel pipes (15); the assembly steel pipe (15) is formed by combining two semi-steel pipes; the two semi-steel pipes surround the connecting joint between the columns from two sides; the gaps between the two semi-steel pipes are connected by adopting vertical welding seams (18), and then a complete assembled steel pipe (15) is formed; the gaps at the upper ends of the assembled steel pipes (15) are connected by adopting upper transverse welding seams (16), and the lower ends of the assembled steel pipes are connected by adopting lower transverse welding seams (17).
3. A prefabricated assembled frame using a concrete filled steel tubular column and steel beam combination as claimed in claim 2, wherein: the steel beam flange (401) is welded and connected with the annular plate through a butt welding seam (13).
4. A prefabricated assembled frame using a concrete filled steel tubular column and steel beam combination as claimed in claim 1 or 3, wherein: the inter-column connection node is located at a height of 1.0-1.5 meters above the floor.
5. A prefabricated assembled frame using a concrete filled steel tubular column and steel beam combination as claimed in claim 1 or 3, wherein: the number of branches of the steel corbels I (103), the steel corbels II (203) and the steel corbels III (303) is different according to the positions of the steel tube concrete columns, the number of branches of the corner columns is two, the number of branches of the side columns is three, and the number of branches of the middle column is four.
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| KR20060041428A (en) * | 2004-11-08 | 2006-05-12 | 이은우 | Prefabrication frame by composing steel frame and concrete composite |
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