CN108104265B - Building frame adopting assembled welding-free prestressed beams - Google Patents
Building frame adopting assembled welding-free prestressed beams Download PDFInfo
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- CN108104265B CN108104265B CN201711435793.XA CN201711435793A CN108104265B CN 108104265 B CN108104265 B CN 108104265B CN 201711435793 A CN201711435793 A CN 201711435793A CN 108104265 B CN108104265 B CN 108104265B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 367
- 239000010959 steel Substances 0.000 claims abstract description 367
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 37
- 239000004567 concrete Substances 0.000 claims description 19
- 239000004568 cement Substances 0.000 claims description 11
- 239000004570 mortar (masonry) Substances 0.000 claims description 10
- 238000005336 cracking Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 3
- POIUWJQBRNEFGX-XAMSXPGMSA-N cathelicidin Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CC=1C=CC=CC=1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1[C@@H](CCC1)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CO)C(O)=O)NC(=O)[C@H](CC=1C=CC=CC=1)NC(=O)[C@H](CC(O)=O)NC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CC(C)C)C1=CC=CC=C1 POIUWJQBRNEFGX-XAMSXPGMSA-N 0.000 description 16
- 238000010276 construction Methods 0.000 description 9
- 238000003466 welding Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
-
- 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
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
Landscapes
- 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 discloses a building frame adopting an assembled welding-free prestress beam, which comprises a prestress beam and a prestress column; the prestress beam and the prestress column are cuboid, a steel cap is arranged at the end face of the prestress beam, a steel plate is arranged at the end face of the other end of the steel cap, and a plurality of first bolt holes are formed in the steel plate. The prestress column is provided with a beam column connecting point, a steel sleeve sleeved on the prestress column is arranged at the beam column connecting point, reinforcing steel plates are respectively arranged outside four sides of the steel sleeve, a plurality of second bolt holes matched with the first bolt holes are respectively arranged on the reinforcing steel plates, and the second bolt holes penetrate through the prestress column, the steel sleeve and the reinforcing steel plates on two sides of the prestress column. And the positions of the prestress beams and the prestress columns are fixed through bolt screwing, so that a building frame is built. The building frame adopting the assembled welding-free prestressed beam combines the advantages of an all-steel structure and a reinforced concrete structure, and overcomes the defects of the two structures.
Description
Technical Field
The invention relates to a building structure, in particular to a building frame adopting an assembled welding-free prestress beam.
Background
The existing building frame structure mainly comprises an all-steel structure and a reinforced concrete structure.
All steel structure disadvantages: the steel structure is heat-resistant, not fire-resistant, easy to rust, poor in corrosion resistance, huge in steel consumption and difficult in cost control; when a fire disaster occurs, the bearing capacity of the steel structure is lost at the temperature of 450-650 ℃, the steel girder and the column are bent due to serious deformation, and the steel structure cannot be used continuously due to excessive deformation; the steel structure is corroded by sunlight, wind sand, rain and snow, industrial gas and the like in the atmospheric environment, and the theoretical life value of the steel structure is only 20-30 years under the condition of adopting the heavy-duty long-acting coating, so that the requirement of a user cannot be met; when welding is needed to connect beams, columns and floor slabs, the operation is complex, the welding process is easy to damage human bodies, and the performance of the materials can be changed due to the influence of the materials on heat.
The reinforced concrete structure has the main defects that: the self gravity is large, the crack resistance of the structure is poor, particularly when the frame structure is constructed, paying off, supporting system building, formwork supporting, steel bar processing and binding are firstly adopted, then concrete pouring is carried out, after the concrete pouring, concrete curing and the like are carried out, and then the building frame structure is formed, the quality is difficult to guarantee, and the connection between the beam and the column is fixed through the strength of the steel bars and the concrete which are buried in advance. The method has the advantages of large consumption of labor, wood, steel, concrete and the like, long construction period, difficult construction after minus five degrees, multiple working procedures and particularly large environmental pollution.
Disclosure of Invention
The invention aims to provide a prefabricated building structure system, which overcomes the defects of the existing building structure frame and combines the advantages of an all-steel structure and a reinforced concrete structure.
In order to achieve the above purpose, the invention provides a building frame adopting an assembled welding-free prestress beam, wherein the building frame comprises the prestress beam and a prestress column; the prestress beam and the prestress column are cuboid; a steel cap is arranged at the end face of the prestress beam, a steel plate is arranged at the end face of the other end of the steel cap, and a plurality of first bolt holes are formed in the steel plate; the first bolt holes are preferably provided with at least four. The prestress column on be equipped with the beam column tie point, beam column tie point department be equipped with the square tubular steel bushing of cover on the prestress column, four sides of steel bushing are equipped with the reinforcing steel plate respectively outward, the reinforcing steel plate on be equipped with a plurality of second bolt holes with first bolt hole looks adaptation respectively, the second bolt hole run through prestress column, steel bushing and the reinforcing steel plate of both sides. Namely, the second bolt hole penetrates through the reinforced steel plate and the steel sleeve and then penetrates through the prestress column. The body of the prestress beam and the prestress column adopts reinforced concrete. And the positions of the prestress beams and the prestress columns are fixed through bolt screwing, so that a building frame is built.
The building frame adopting the assembled welding-free prestress beam, wherein the steel cap is a cuboid-shaped shell with one side open and one side closed, the open side of the steel cap is adjacent to the end face of the prestress beam, and the area of the end face of the steel cap is larger than or equal to that of the end face of the prestress beam; the prestressed girder is internally provided with a steel bar, the steel bar penetrates through the end face of the prestressed girder and is welded with the end face of the steel cap from the inside of the steel cap, and the steel cap is provided with an opening for pouring cement concrete. Namely, the steel bars in the prestress beam extend from the end parts of the two sides of the prestress beam, the steel bars extending from the end parts of the prestress beam are connected with steel caps through welding, and the steel caps are connected with steel plates.
The building frame adopting the assembled welding-free prestress beam comprises a first prestress beam and a second prestress beam; the end face of the first prestress beam is provided with a first steel cap, the end face of the first steel cap is provided with a first steel plate, and the area of the first steel plate is larger than that of the end face of the first steel cap; the end face of the second prestress beam is provided with a second steel cap, the end face of the second steel cap is provided with a second steel plate, and the area of the second steel plate is equal to that of the end face of the second steel cap.
The building frame adopting the assembled welding-free prestress beam, wherein the end face of the first steel cap is attached to the first steel plate in a welding connection manner, a triangular prism-shaped first reinforcing rib is arranged between the first steel plate and the side wall of the first steel cap, and the first bolt holes are formed in the edge of the first steel plate which is larger than the end face of the first steel cap and are respectively located at the intervals of the adjacent first reinforcing ribs. The first steel cap and the first steel plate adopt an integrated structure, the bolt holes are formed in the first steel plate on the periphery of the first steel cap, the structure is simple, and the manufacturing is convenient.
The building frame adopting the assembled welding-free prestress beam, wherein the middle of the end face of the second steel cap is provided with the cuboid-shaped steel bulge, the end face of the bulge, which is positioned at the far end of the second steel cap, is tightly attached to the second steel plate and is in welded connection with the second steel plate, a cuboid-shaped second reinforcing rib is arranged between the second steel plate and the end face of the second steel cap, the periphery of the bulge of the second steel plate is provided with the first bolt hole, and the first bolt holes are respectively positioned at the intervals of the adjacent second reinforcing ribs.
The building frame adopting the assembled welding-free prestress beam, wherein the prestress column is provided with the third steel cap at the bottom, the prestress column is internally provided with the reinforcing steel bar, and the reinforcing steel bar penetrates through the end face of the prestress column and is welded with the third steel cap.
The building frame adopting the assembled welding-free prestress beam, wherein the third steel cap is in a solid cuboid shape with a top surface and a bottom surface, a plurality of third reinforcing ribs are arranged between the top surface of the third steel cap and the bottom surface of the prestress column, the height of each third reinforcing rib is equal to the length of a steel bar penetrating through the end surface of the prestress column, a third steel plate is arranged on the bottom surface of the third steel cap, and the third steel plate is tightly attached to the bottom surface of the third steel cap; and a plurality of third bolt holes are formed in the third steel plate. Preferably, at least four third bolt holes are provided.
The building frame adopting the assembled welding-free prestress beam is characterized in that a prefabricated bearing platform is arranged below the third steel plate, a fourth steel plate is embedded in the prefabricated bearing platform, and the fourth steel plate is parallel to the third steel plate, the top surface and the bottom surface of the third steel cap and the bottom surface of the prestress column and has the same size; the fourth steel plate is provided with a plurality of fourth bolt holes which are matched with the third bolt holes. The fourth steel plate is located the center of prefabricated cushion cap to form decurrent sunken from prefabricated cushion cap upper surface, this sunken shape size looks adaptation with prestressing force post bottom and third steel cap and third steel plate.
The prefabricated bearing platform is fixed with the prestress column through the bolts, the third bolt holes and the fourth bolt holes, and the fourth steel plate is clung to the third steel plate; the existing bearing platforms are all manufactured on site, and then the columns are arranged on the bearing platforms; when the prestress column is manufactured, namely the bearing platform and the prestress column are manufactured simultaneously, the integral forming is convenient, the integral strength is improved, and the strength of the building frame is further improved. The prestress posts above the two adjacent prefabricated bearing platforms are connected through prestress beams, the prestress posts are fixed with the prestress beams through bolts, first bolt holes and second bolt holes, and the first steel plate or the second steel plate is tightly attached to the reinforced steel plate; when the prestress beams are respectively arranged on two sides of the prestress column, bolts connected with the prestress beams are screwed into second bolt holes of the prestress column from two sides of the prestress column, and the tail ends of the bolts are mutually propped in the second bolt holes; when the prestress beam is arranged on one side of the prestress column, a bolt connected with the prestress beam is screwed into a second bolt hole of the prestress column from one side of the prestress column, and the second bolt hole is filled from the other side of the prestress column to the full. The second bolt hole is a through hole, the reinforced steel plate at one side of the steel sleeve penetrates through the reinforced steel plate at the other side of the steel sleeve, when the two sides of the prestress column are connected with the prestress beam, the second bolt hole is screwed with a bolt from the openings at the two sides, and the two bolts screwed from the two sides are propped against the second bolt hole to form a whole without a gap, so that the strength is increased; when one side of the prestress column is connected with the prestress beam, the bolt is screwed in from one side of the second bolt hole and then is filled through the other side of the second bolt hole, or the bolt with the length matched with the width of the connecting point of the beam and the column is adopted. In order to ensure the strength, the bolt is a high-strength bolt made of 45 # steel. The bolts are arranged at the interval of two adjacent reinforcing ribs, so that the volume is reduced.
Preferably, the prestress beams arranged between the adjacent prestress columns can be arranged from bottom to top at certain intervals. More preferably, in order to ensure the building height, the prestress column may be a prestress beam structure, i.e., prestress beams are vertically arranged to form prestress columns, and a structure at a beam-column connection point is arranged on the prestress beams, so that steel plates at the ends of the upper prestress beam and the lower prestress beam are connected by bolts. The height of the prestress column is convenient to increase, and the building height is further met. In order to ensure the building strength, in a square structure formed by intersecting prestress beams and prestress columns in a building frame built by adopting prestress beams and prestress columns, a reinforcing structure in an X shape can be preferably arranged respectively, the reinforcing structure adopts prestress concrete members, the reinforcing structure is arranged between two adjacent prestress columns, and the upper end part and the lower end part of the reinforcing structure are propped against one prestress beam. When the floor needs to be paved, the steel bars are preferably stretched out around the floor, the length of the steel bars stretched out from the periphery of the floor is not less than 20cm, the longitudinal direction of the prestressed beam is used as the transverse direction, the steel bars which are longitudinally arranged are buried in the prestressed beam, the steel bars which are longitudinally arranged penetrate out from the upper part of the prestressed beam, the steel bars stretched out from the periphery of the floor and the steel bars which are longitudinally arranged are conveniently connected through welding, and then the floor is fixed to form a whole, so that the building has better strength.
According to the building frame adopting the assembled welding-free prestressed beam, after the prestressed column, the prefabricated bearing platform and the prestressed beam are fixedly connected, cement concrete is poured into the steel cap arranged at the end face of the prestressed beam for filling, anti-crack mortar is filled in the gap between the second steel cap and the second steel plate, the second steel cap adopts a concave design, steel is saved, and during construction, the anti-crack mortar is filled between the end face of the second steel cap and the second steel plate, so that the influence of the thermal expansion coefficient can be effectively reduced, and the generation of cracks is reduced. And the gap between the bottom surface of the prestress column and the third steel cap is filled with anti-crack mortar. The steel sleeve is filled with cement concrete and is firm.
The building frame adopting the assembled welding-free prestressed beam has the following advantages:
according to the invention, the structure of the beam and the column prefabricated in the prestress mode is improved, and the improved prestress beam and column are utilized to build the building frame, so that the original beam and column connection strength is improved, and the steel consumption is reduced; in the design, only two ends and the middle of the middle beam are filled with a small amount of steel, and the steel cap and the steel sleeve are filled with concrete to be firm, so that the prestress beam is integrated, the deformation of the steel structure during fire disaster is reduced, and the influence of different thermal expansion coefficients between steel and concrete is reduced; the prefabricated beams and columns reduce the time of exposing the steel in the atmospheric environment in the storage and construction processes, and are more rust-proof; the beams and the columns are connected through bolts, so that the welding process is reduced. The design is also reusable.
Drawings
Fig. 1 is a schematic structural view of a building frame employing an assembled solderless prestressed beam of the present invention.
FIG. 2 is a schematic illustration of a prestressed column of a building frame employing an assembled weld-free prestressed beam of the present invention.
Fig. 3 is an enlarged view of the beam-column connection point at the prestressed column a of the building frame employing the assembled welding-free prestressed beam of the present invention.
Fig. 4 is a schematic view of a first prestressed girder of a building frame employing an assembled welding-free prestressed girder according to the present invention.
Fig. 5 is a front view of a first prestressed girder of a building frame using an assembled welding-free prestressed girder according to the present invention.
Fig. 6 is a schematic view of a second prestressed girder of a building frame employing an assembled welding-free prestressed girder according to the present invention.
Fig. 7 is a front view of a second prestressed girder of a building frame using an assembled welding-free prestressed girder according to the present invention.
FIG. 8 is a schematic diagram of the connection of a prestressed column of a building frame with an assembled solderless prestressed beam and a prefabricated cap according to the present invention.
Fig. 9 is a schematic diagram of the connection of a prestressed column to a prestressed beam of a building frame employing an assembled solderless prestressed beam according to the present invention.
In the figure: 1. a prestressed beam; 2. a beam-column connection point; 3. a steel cap; 4. a steel plate; 5. a first bolt hole; 6. a steel sleeve; 7. reinforcing the steel plate; 8. a second bolt hole; 9. a first prestressed beam; 10. a second prestressed beam; 11. a first steel cap; 12. a first steel plate; 13. a first reinforcing rib; 14. a protrusion; 15. a second steel cap; 16. a second steel plate; 17. a second reinforcing rib; 18. a third steel cap; 19. a third reinforcing rib; 20. a third bolt hole; 21. prefabricating a bearing platform; 22. a third steel plate; 23. a fourth steel plate; 24. a bolt; 25. an opening; 26. a prestress column; 27. a reinforcing structure; 28. and a fourth bolt hole.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
As shown in fig. 1, the building frame provided by the invention adopts the assembled welding-free prestressed beam 1, and comprises the prestressed beam 1 and the prestressed column 26; the prestress beam 1 and the prestress column 26 are cuboid, and reinforced concrete is adopted as the main bodies of the prestress beam 1 and the prestress column 26.
The end face of the prestress beam 1 is provided with a steel cap 3, the end face of the other end of the steel cap 3 is provided with a steel plate 4, and the steel plate 4 is provided with a plurality of first bolt holes 5. The prestress column 26 is provided with a beam column connecting point 2, the beam column connecting point 2 is provided with a square pipe-shaped steel sleeve 6 sleeved on the prestress column 26, four sides of the steel sleeve 6 are respectively provided with a reinforced steel plate 7, the reinforced steel plate 7 is respectively provided with a plurality of second bolt holes 8 matched with the first bolt holes 5, and the second bolt holes 8 penetrate through the prestress column 26 and the steel sleeve 6 and the reinforced steel plates 7 on two sides of the steel sleeve 6. See fig. 2 and 3.
The positions of the prestress beam 1 and the prestress column 26 are fixed by screwing bolts 24, so that a building frame is built.
The steel cap 3 is a cuboid-shaped shell with one side open and one side closed, one side of the steel cap 3 is adjacent to the end face of the prestress beam 1, and the area of the end face of the steel cap 3 is larger than or equal to that of the end face of the prestress beam 1; the prestress beam 1 is internally provided with a steel bar, the steel bar penetrates through the end face of the prestress beam 1 and is welded with the end face of the steel cap 3 from the inside of the steel cap 3, and the steel cap 3 is provided with an opening 25 for pouring cement concrete.
The prestress beam 1 comprises a first prestress beam 9 and a second prestress beam 10; the end face of the first prestress beam 9 is provided with a first steel cap 11, the end face of the first steel cap 11 is provided with a first steel plate 12, and the area of the first steel plate 12 is larger than that of the end face of the first steel cap 11; the end face of the second prestress beam 10 is provided with a second steel cap 15, the end face of the second steel cap 15 is provided with a second steel plate 16, and the area of the second steel plate 16 is equal to the area of the end face of the second steel cap 15.
The terminal surface and the first steel sheet 12 laminating of first steel cap 11 and welded connection are equipped with triangular prism shape's first stiffening rib 13 between the lateral wall of first steel sheet 12 and first steel cap 11, and first bolt hole 5 sets up on the border that first steel sheet 12 is greater than first steel cap 11 terminal surface to be located adjacent first stiffening rib 13's interval department respectively. See fig. 4 and 5.
The middle of the end face of the second steel cap 15 is provided with a cuboid-shaped steel bulge 14, the end face of the bulge 14 positioned at the far end of the second steel cap 15 is clung to the second steel plate 16 and is welded with the second steel plate 16, a cuboid-shaped second reinforcing rib 17 is arranged between the second steel plate 16 and the end face of the second steel cap 15, the first bolt holes 5 are arranged on the periphery of the bulge 14 on the second steel plate 16, and the first bolt holes 5 are respectively positioned at intervals of the adjacent second reinforcing ribs 17. See fig. 6 and 7.
The third steel cap 18 is arranged at the bottom of the prestress column 26, steel bars are arranged in the prestress column 26, penetrate through the end face of the prestress column 26 and are welded with the third steel cap 18.
The third steel cap 18 is a solid cuboid with a top surface and a bottom surface, a plurality of third reinforcing ribs 19 are arranged between the top surface of the third steel cap 18 and the bottom surface of the prestress column 26, the height of each third reinforcing rib 19 is equal to the length of a reinforcing steel bar penetrating through the end surface of the prestress column 26, a third steel plate 22 is arranged on the bottom surface of the third steel cap 18, and the third steel plate 22 is tightly attached to the bottom surface of the third steel cap 18. The third steel plate 22 is provided with a plurality of third bolt holes 20.
A prefabricated bearing platform 21 is arranged below the third steel plate 22, a fourth steel plate 23 is embedded in the prefabricated bearing platform 21, and the fourth steel plate 23 is parallel to and equal in size with the third steel plate 22, the top surface and the bottom surface of the third steel cap 18 and the bottom surface of the prestress column 26; the fourth steel plate 23 is provided with a number of fourth bolt holes 28 adapted to the third bolt holes 20.
The prefabricated base 21 is fixed to the prestress column 26 by bolts 24, third bolt holes 20 and fourth bolt holes 28, and the fourth steel plate 23 is closely attached to the third steel plate 22. The prestress columns 26 above two adjacent prefabricated platforms 21 are connected through the prestress beam 1, the prestress columns 26 are fixed with the prestress beam 1 through bolts 24, first bolt holes 5 and second bolt holes 8, and the first steel plate 12 or the second steel plate 16 is closely attached to the reinforced steel plate 7. See fig. 8 and 9.
When the prestress beams 1 are respectively arranged at the two sides of the prestress column 26, the bolts 24 connected with the prestress beams 1 are screwed into the second bolt holes 8 of the prestress column 26 from the two sides of the prestress column 26, and the tail ends of the bolts 24 are mutually propped in the second bolt holes 8; when the prestress beam 1 is provided on one side of the prestress column 26, the bolt 24 for connecting the prestress beam 1 is screwed into the second bolt hole 8 of the prestress column 26 from one side of the prestress column 26, and the second bolt hole 8 is filled from the other side of the prestress column 26.
After the prestress column 26, the prefabricated bearing platform 21 and the prestress beam 1 are connected and fixed, cement concrete is filled in the steel caps 3 arranged at the end faces of the prestress beam 1, anti-cracking mortar is filled in the gaps between the second steel caps 15 and the second steel plates 16, and anti-cracking mortar is also filled in the gaps between the bottom faces of the prestress column 26 and the third steel caps 18. The steel sleeve 6 is filled with cement concrete and is firm.
The construction frame according to the invention using the assembled solderless prestressed beam 1 will be described further below with reference to examples.
Example 1
A building frame adopting an assembled welding-free prestressed beam 1, which comprises the prestressed beam 1 and prestressed columns 26; the prestress beam 1 and the prestress column 26 are cuboid, and reinforced concrete is adopted as the main bodies of the prestress beam 1 and the prestress column 26.
A steel cap 3 is arranged at the end face of the prestress beam 1, a steel plate 4 is arranged at the end face of the other end of the steel cap 3, and a plurality of first bolt holes 5 are formed in the steel plate 4; the first bolt holes 5 are preferably provided with at least four. The prestress column 26 is provided with a beam column connecting point 2, the beam column connecting point 2 is provided with a square pipe-shaped steel sleeve 6 sleeved on the prestress column 26, four sides of the steel sleeve 6 are respectively provided with a reinforced steel plate 7, the reinforced steel plate 7 is respectively provided with a plurality of second bolt holes 8 matched with the first bolt holes 5, and the second bolt holes 8 penetrate through the prestress column 26 and the steel sleeve 6 and the reinforced steel plates 7 on two sides of the steel sleeve 6. Namely, the second bolt hole 8 penetrates through the reinforced steel plate 7 and the steel sleeve 6, and further penetrates through the prestress column 26.
The positions of the prestress beam 1 and the prestress column 26 are fixed by screwing bolts 24, so that a building frame is built.
The steel cap 3 is a cuboid-shaped shell with one side open and one side closed, one side of the steel cap 3 is adjacent to the end face of the prestress beam 1, and the area of the end face of the steel cap 3 is larger than or equal to that of the end face of the prestress beam 1; the prestress beam 1 is internally provided with a steel bar, the steel bar penetrates through the end face of the prestress beam 1 and is welded with the end face of the steel cap 3 from the inside of the steel cap 3, and the steel cap 3 is provided with an opening 25 for pouring cement concrete. That is, the reinforcing bars in the prestressed girder 1 are protruded from both side ends of the prestressed girder 1, the reinforcing bars protruded from the ends of the prestressed girder 1 are connected to the steel caps 3 by welding, and the steel caps 3 are connected to the steel plates 4.
The prestress beam 1 comprises a first prestress beam 9 and a second prestress beam 10; the end face of the first prestress beam 9 is provided with a first steel cap 11, the end face of the first steel cap 11 is provided with a first steel plate 12, and the area of the first steel plate 12 is larger than that of the end face of the first steel cap 11; the end face of the second prestress beam 10 is provided with a second steel cap 15, the end face of the second steel cap 15 is provided with a second steel plate 16, and the area of the second steel plate 16 is equal to the area of the end face of the second steel cap 15.
The terminal surface and the first steel sheet 12 laminating of first steel cap 11 and welded connection are equipped with triangular prism shape's first stiffening rib 13 between the lateral wall of first steel sheet 12 and first steel cap 11, and first bolt hole 5 sets up on the border that first steel sheet 12 is greater than first steel cap 11 terminal surface to be located adjacent first stiffening rib 13's interval department respectively. The first steel cap 11 and the first steel plate 12 are of an integrated structure, the bolt holes are formed in the first steel plate 12 on the periphery of the first steel cap 11, and the structure is simple and convenient to manufacture.
The middle of the end face of the second steel cap 15 is provided with a cuboid-shaped steel bulge 14, the end face of the bulge 14 positioned at the far end of the second steel cap 15 is clung to the second steel plate 16 and is welded with the second steel plate 16, a cuboid-shaped second reinforcing rib 17 is arranged between the second steel plate 16 and the end face of the second steel cap 15, the first bolt holes 5 are arranged on the periphery of the bulge 14 on the second steel plate 16, and the first bolt holes 5 are respectively positioned at intervals of the adjacent second reinforcing ribs 17.
The third steel cap 18 is arranged at the bottom of the prestress column 26, steel bars are arranged in the prestress column 26, penetrate through the end face of the prestress column 26 and are welded with the third steel cap 18.
The third steel cap 18 is a solid cuboid with a top surface and a bottom surface, a plurality of third reinforcing ribs 19 are arranged between the top surface of the third steel cap 18 and the bottom surface of the prestress column 26, the height of each third reinforcing rib 19 is equal to the length of a reinforcing steel bar penetrating through the end surface of the prestress column 26, a third steel plate 22 is arranged on the bottom surface of the third steel cap 18, and the third steel plate 22 is tightly attached to the bottom surface of the third steel cap 18. The third steel plate 22 is provided with a plurality of third bolt holes 20. Preferably, at least four third bolt holes 20 are provided.
A prefabricated bearing platform 21 is arranged below the third steel plate 22, a fourth steel plate 23 is embedded in the prefabricated bearing platform 21, and the fourth steel plate 23 is parallel to and equal in size with the third steel plate 22, the top surface and the bottom surface of the third steel cap 18 and the bottom surface of the prestress column 26; the fourth steel plate 23 is provided with a number of fourth bolt holes 28 adapted to the third bolt holes 20. The fourth steel plate 23 is located at the center of the prefabricated support 21, and forms a downward recess from the upper surface of the prefabricated support 21, which is adapted to the shape and size of the bottom of the prestress column 26 and the third steel cap 18 and the third steel plate 22.
The prefabricated base 21 is fixed to the prestress column 26 by bolts 24, third bolt holes 20 and fourth bolt holes 28, and the fourth steel plate 23 is closely attached to the third steel plate 22. The existing bearing platforms are all manufactured on site, and then the columns are arranged on the bearing platforms; when the prestress column 26 is manufactured, namely, the bearing platform and the prestress column 26 are manufactured simultaneously, so that the integral forming is convenient, the integral strength is improved, and the strength of the building frame is further improved.
The prestress columns 26 above two adjacent prefabricated platforms 21 are connected through the prestress beam 1, the prestress columns 26 are fixed with the prestress beam 1 through bolts 24, first bolt holes 5 and second bolt holes 8, and the first steel plate 12 or the second steel plate 16 is closely attached to the reinforced steel plate 7.
When the prestress beams 1 are respectively arranged at the two sides of the prestress column 26, the bolts 24 connected with the prestress beams 1 are screwed into the second bolt holes 8 of the prestress column 26 from the two sides of the prestress column 26, and the tail ends of the bolts 24 are mutually propped in the second bolt holes 8; when the prestress beam 1 is provided on one side of the prestress column 26, the bolt 24 for connecting the prestress beam 1 is screwed into the second bolt hole 8 of the prestress column 26 from one side of the prestress column 26, and the second bolt hole 8 is filled from the other side of the prestress column 26. Namely, the second bolt hole 8 is a through hole, the reinforced steel plate 7 on one side of the steel sleeve 6 passes through the reinforced steel plate 7 on the other side of the steel sleeve 6, when the two sides of the prestress column 26 are connected with the prestress beam 1, the second bolt hole 8 is screwed with a bolt 24 from the openings 25 on the two sides, and the two bolts 24 screwed from the two sides are propped against the second bolt hole 8 to form a whole without a gap, so that the strength is increased; when one side of the prestress column 26 is connected with the prestress beam 1, the bolt 24 is screwed in from one side of the second bolt hole 8 and then filled through the other side of the second bolt hole 8, or the bolt 24 with the length matched with the width of the beam and column connecting point is adopted. In order to ensure the strength, the bolt 24 is a high-strength bolt 24 made of 45-gauge steel. The bolts 24 are provided at the intervals of the adjacent two reinforcing ribs to reduce the volume.
Preferably, the prestress beams 1 arranged between adjacent prestress columns 26 can be arranged from bottom to top at intervals of a certain height. More preferably, in order to ensure the building height, the prestress beam 26 may be a structure of the prestress beam 1, that is, the prestress beam 1 is vertically arranged as the prestress beam 26, and a structure of a beam-column connection point is provided on the prestress beam 1, and steel plates at the ends of the upper and lower prestress beams 1 are connected by bolts 24. The height of the prestress column 26 is increased so as to meet the building height. In order to ensure the building strength, in a square structure formed by intersecting the prestressed beams 1 and the prestressed columns 26 in a building frame constructed by using the prestressed beams 1 and the prestressed columns 26, it is preferable to provide a reinforcing structure 27 in an "X" shape, wherein the reinforcing structure 27 is made of prestressed concrete members, the reinforcing structure 27 is provided between two adjacent prestressed columns 26, and the upper end and the lower end of the reinforcing structure 27 are abutted against one prestressed beam 1. When the floor needs to be paved, the steel bars are preferably stretched out around the floor, the length of the steel bars stretched out from the periphery of the floor is not less than 20cm, the longitudinal direction of the prestressed beam 1 is used as the transverse direction, the steel bars which are longitudinally arranged are buried in the prestressed beam 1, the steel bars which are longitudinally arranged penetrate out from the upper part of the prestressed beam 1, the steel bars stretched out from the periphery of the floor and the steel bars which are longitudinally arranged are conveniently connected through welding, and then the floor is fixed to form a whole, so that the building has better strength.
After the prestress column 26, the prefabricated bearing platform 21 and the prestress beam 1 are connected and fixed, cement concrete is filled in the steel cap 3 arranged at the end face of the prestress beam 1 to be filled, crack-resistant mortar is filled in a gap between the second steel cap 15 and the second steel plate 16, the second steel cap 15 is of a concave design, steel is saved, and during construction, the crack-resistant mortar is filled between the end face of the second steel cap 15 and the second steel plate 16, so that the influence of thermal expansion coefficient can be effectively reduced, and the generation of cracks can be reduced. The gap between the bottom surface of the pre-stressing column 26 and the third steel cap 18 is also filled with anti-crack mortar. The steel sleeve 6 is filled with cement concrete and is firm.
The building frame adopting the assembled welding-free prestressed beam, provided by the invention, adopts the full-frame building structure system of the prefabricated welding-free prestressed beam and column, combines the advantages of an all-steel structure and a reinforced concrete structure, and the system reflects the advantages of easy processing, easy hoisting, reduced steel consumption, short construction period, construction in spring, summer, autumn and winter of the steel structure, reflects the fire resistance, durability and moldability of the reinforced concrete, reduces the pollution of wood, manpower and construction sites and the like; welding-free: the beam and the column have fewer steel materials, and only the connection parts of the two ends and the column adopt a small amount of steel materials, namely all parts are finished in a workshop, so that the precision and the quality are ensured, and the high-strength bolt can be directly hoisted and linked on site.
While the present invention has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the invention. Many modifications and substitutions of the present invention will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (6)
1. The building frame adopting the assembled welding-free prestress beam is characterized by comprising a prestress beam and a prestress column; the prestress beam and the prestress column are cuboid;
a steel cap is arranged at the end face of the prestress beam, a steel plate is arranged at the end face of the other end of the steel cap, and a plurality of first bolt holes are formed in the steel plate;
the prestress column is provided with a beam column connecting point, a square pipe-shaped steel sleeve sleeved on the prestress column is arranged at the beam column connecting point, reinforcing steel plates are respectively arranged outside four sides of the steel sleeve, a plurality of second bolt holes matched with the first bolt holes are respectively arranged on the reinforcing steel plates, and the second bolt holes penetrate through the prestress column, the steel sleeve and the reinforcing steel plates at two sides of the prestress column;
the steel cap is a cuboid-shaped shell with one open side and one closed end face, the open side of the steel cap is adjacent to the end face of the prestress beam, and the area of the end face of the steel cap is larger than or equal to that of the end face of the prestress beam; the prestress beam is internally provided with a steel bar, the steel bar penetrates through the end face of the prestress beam and is welded with the end face of the steel cap from the inside of the steel cap, and the steel cap is provided with an opening for pouring cement concrete;
the prestress beam comprises a first prestress beam and a second prestress beam; the end face of the first prestress beam is provided with a first steel cap, the end face of the first steel cap is provided with a first steel plate, and the area of the first steel plate is larger than that of the end face of the first steel cap; the end face of the second prestress beam is provided with a second steel cap, the end face of the second steel cap is provided with a second steel plate, and the area of the second steel plate is equal to that of the end face of the second steel cap;
the end face of the first steel cap is attached to the first steel plate and is welded with the first steel plate, a triangular prism-shaped first reinforcing rib is arranged between the first steel plate and the side wall of the first steel cap, and the first bolt holes are formed in the edge of the first steel plate which is larger than the end face of the first steel cap and are respectively located at the intervals of the adjacent first reinforcing ribs;
the middle of the end face of the second steel cap is provided with a cuboid-shaped steel bulge, the end face of the bulge, which is positioned at the far end of the second steel cap, is tightly attached to the second steel plate and is in welded connection with the second steel plate, a cuboid-shaped second reinforcing rib is arranged between the second steel plate and the end face of the second steel cap, the first bolt hole is arranged on the periphery of the bulge on the second steel plate, and the first bolt hole is respectively positioned at the interval of the adjacent second reinforcing ribs.
2. The building frame using the assembled welding-free prestressed girder according to claim 1, wherein the bottom of the prestressed column is provided with a third steel cap, the prestressed column is internally provided with a reinforcing steel bar, and the reinforcing steel bar penetrates through the end face of the prestressed column and is welded with the third steel cap.
3. The building frame adopting the assembled welding-free prestressed girder according to claim 2, wherein the third steel cap is a solid cuboid with a top surface and a bottom surface, a plurality of third reinforcing ribs are arranged between the top surface of the third steel cap and the bottom surface of the prestressed column, the height of each third reinforcing rib is equal to the length of a reinforcing steel bar penetrating through the end surface of the prestressed column, a third steel plate is arranged on the bottom surface of the third steel cap, and a plurality of third bolt holes are formed in the third steel plate.
4. The building frame adopting the assembled welding-free prestressed girder as claimed in claim 3, wherein a prefabricated bearing platform is arranged below the third steel plate, a fourth steel plate is embedded in the prefabricated bearing platform, and the fourth steel plate is parallel to and equal in size with the third steel plate, the top surface and the bottom surface of the third steel cap and the bottom surface of the prestressed column; the fourth steel plate is provided with a plurality of fourth bolt holes which are matched with the third bolt holes.
5. The building frame adopting the assembled welding-free prestressed girder according to claim 4, wherein the prefabricated bearing platform is fixed with the prestressed column through bolts, third bolt holes and fourth bolt holes, and the fourth steel plate is tightly attached to the third steel plate; the prestress posts above the two adjacent prefabricated bearing platforms are connected through prestress beams, the prestress posts are fixed with the prestress beams through bolts, first bolt holes and second bolt holes, and the first steel plate or the second steel plate is tightly attached to the reinforced steel plate; when the prestress beams are respectively arranged on two sides of the prestress column, bolts connected with the prestress beams are screwed into second bolt holes of the prestress column from two sides of the prestress column, and the tail ends of the bolts are mutually propped in the second bolt holes; when the prestress beam is arranged on one side of the prestress column, a bolt connected with the prestress beam is screwed into a second bolt hole of the prestress column from one side of the prestress column, and the second bolt hole is filled from the other side of the prestress column to the full.
6. The building frame adopting the assembled welding-free prestressed girder according to claim 5, wherein after the prestressed column, the prefabricated bearing platform and the prestressed girder are connected and fixed, cement concrete is poured into steel caps arranged at the end faces of the prestressed girder for filling, anti-cracking mortar is filled in gaps between the second steel caps and the second steel plates, and anti-cracking mortar is also filled in gaps between the bottom surfaces of the prestressed column and the third steel caps.
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| CN201711435793.XA CN108104265B (en) | 2017-12-26 | 2017-12-26 | Building frame adopting assembled welding-free prestressed beams |
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| JPH10252148A (en) * | 1997-03-17 | 1998-09-22 | Housing Tamura:Kk | Beam-column joint construction |
| CN204418389U (en) * | 2015-01-05 | 2015-06-24 | 重庆大学 | A kind of concrete-filled steel square tubular column and i shaped steel beam end plate embedded connecting structure |
| CN106894523A (en) * | 2017-05-03 | 2017-06-27 | 河南科技大学 | A kind of connecting node of rectangular steel-tube concrete column and girder with rolled steel section en cased in concrete |
| CN107254884A (en) * | 2017-07-28 | 2017-10-17 | 湖南大学 | A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10252148A (en) * | 1997-03-17 | 1998-09-22 | Housing Tamura:Kk | Beam-column joint construction |
| CN204418389U (en) * | 2015-01-05 | 2015-06-24 | 重庆大学 | A kind of concrete-filled steel square tubular column and i shaped steel beam end plate embedded connecting structure |
| CN106894523A (en) * | 2017-05-03 | 2017-06-27 | 河南科技大学 | A kind of connecting node of rectangular steel-tube concrete column and girder with rolled steel section en cased in concrete |
| CN107254884A (en) * | 2017-07-28 | 2017-10-17 | 湖南大学 | A kind of detachable prefabricated assembled concrete-filled steel square tubular column pin node |
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