Quickly-assembled support-free and mold-free reinforced concrete frame structure

Abstract

The utility model discloses a quickly-assembled support-free and mold-free reinforced concrete frame structure, which belongs to the technical field of building frames and comprises a plurality of building frame layers, and each building frame layer comprises a prefabricated frame column, a bracket at the top of the prefabricated frame column and vertical steel bars inside the prefabricated frame column; the prefabricated frame column is divided into an upper frame column and a lower frame column, and the upper frame column and the lower frame column are connected through a mechanical connector; the stress beam comprises a first precast beam, a second precast beam and a third precast beam; the structure further comprises a floor support plate which is fixedly arranged above the third precast beam. The structure further comprises a second concrete layer, and the second concrete layer is filled in the upper frame column and above the floor support plate. According to the frame structure disclosed by the utility model, the prefabricated frame columns are connected through the mechanical connectors, so that the problem that the prefabricated frame columns need to be supported through columns is solved; the frame columns, the stress beams and the floor bearing plates are of prefabricated structures, positioning and pouring do not need to be conducted on the construction site, the pouring amount is reduced, and the construction speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated building frames, in particular to a quickly assembled reinforced concrete frame structure without bracing and formwork. Background Art

[0002] In the existing construction process, concrete is generally mixed on site for building pouring. Since the on-site support and formwork construction of the cast-in-place frame structure are large in quantity and long in construction period, it is difficult to guarantee the construction quality of reinforced concrete. Therefore, through continuous innovation of construction technologies, prefabricated frame structures have become a popular construction technology nowadays.

[0003] However, in prefabricated frame structures, it is difficult to guarantee the construction quality of on-site sleeve grouting of prefabricated frame columns, and column supports need to be set before sleeve grouting of prefabricated frame columns. Summary of the Utility Model

[0004] The utility model provides a quickly assembled reinforced concrete frame structure without bracing and formwork, aiming to solve the problem in the prior art that column supports are required for prefabricated frame columns in prefabricated reinforced concrete structures.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme:

[0006] A quickly assembled reinforced concrete frame structure without bracing and formwork provided by the utility model includes multiple building frame layers, and is characterized in that the building frame layer includes: prefabricated frame columns, with corbels arranged at the tops of the prefabricated frame columns, and vertical steel bars arranged inside the prefabricated frame columns; the prefabricated frame columns are divided into upper frame columns and lower frame columns, and the upper frame columns and the lower frame columns are connected by mechanical connectors, a first concrete layer is poured inside the lower frame columns, and a first grouting layer is arranged at the connection between the upper frame columns and the lower frame columns; the mechanical connectors include steel bar slots, the steel bar slots are located at the tops of the vertical steel bars inside the upper frame columns and the lower frame columns, the bottom of the vertical steel bar of the upper frame column protrudes to form a steel bar plug, and the steel bar plug is inserted into the steel bar slot located in the lower frame column; it further includes a stressed beam, the stressed beam includes a first precast beam, a second precast beam and a third precast beam, the end of the first precast beam is fixed to the top of the prefabricated frame column, the end of the second precast beam is fixed to the corbel, and both ends of the third precast beam are respectively fixed between two first precast beams; it further includes a floor slab, the floor slab is fixedly arranged above the third precast beam; it further includes a second concrete layer, and the second concrete layer is filled inside the upper frame columns and above the floor slab.

[0007] Further, a grouting pipe is provided at the bottom of the lower frame column, and the bottom of the grouting pipe is flush with the bottom surface of the upper frame column; an injection pipe and an overflow pipe protrude from the grouting pipe, and the injection pipe is located above the overflow pipe.

[0008] Further, a plurality of notches are provided on the first precast beam, and steps adapted to the notches are provided at the ends of the third precast beam, so that the steps at both ends of the third precast beam overlap the notches.

[0009] Further, the first precast beam and the second precast beam are provided with first transverse steel bars and first stirrups; the first transverse steel bars are located at the bottoms of the first precast beam and the second precast beam, and their two ends extend out of the first precast beam and the second precast beam and then bend upward; a plurality of the first stirrups are arranged in parallel, and the bottoms of the first stirrups are welded and fixed to the first transverse steel bars.

[0010] Optionally, the floor slab is a single-span floor slab, and its two ends are respectively fixed to two adjacent third precast beams.

[0011] Optionally, a U-shaped steel bar is fixedly arranged at the top of the third precast beam, and the top of the U-shaped steel bar passes through the gap between the two floor slabs.

[0012] Optionally, a plurality of second transverse steel bars and second stirrups are arranged in the third precast beam, the shape of the second stirrups is trapezoidal, a plurality of the second transverse steel bars are circumferentially distributed and are welded and fixed to the second stirrups; the second transverse steel bars and the second stirrups pass through the gap between the two floor slabs.

[0013] Optionally, the floor slab is a multi-span floor slab.

[0014] Optionally, the floor slab is a concrete composite slab, and at least one through hole is preset on the floor slab; a U-shaped steel bar is fixedly arranged at the top of the third precast beam, and the top of the U-shaped steel bar passes through the through hole.

[0015] Optionally, the floor slab is a steel truss floor slab or a profiled steel sheet; a U-shaped steel bar is arranged at the top of the third precast beam, a connecting steel plate is fixedly arranged between the U-shaped steel bar and the floor slab, and the connecting steel plate and the floor slab are fixed by rivets.

[0016] Compared with the existing technology, the utility model has the following advantages:

[0017] The precast frame columns are connected by mechanical connectors, which solves the problem that precast frame columns need column supports; at the same time, the frame columns, load-bearing beams and floor slabs are precast structures, eliminating the need for on-site positioning and pouring, reducing the on-site pouring volume and improving the construction speed during the construction of building frames. Description of the Drawings

[0018] The present application will be further described in detail below with reference to the drawings and specific embodiments.

[0019] Figure 1 It is a schematic diagram of a fast-assembled and formwork-free reinforced concrete frame structure provided in the first embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the structure of a single building frame layer in the first embodiment.

[0021] Figure 3 It is an exploded view of the structure of a single building frame layer in the first embodiment.

[0022] Figure 4 It is a schematic diagram of the structure of the first precast beam in the first embodiment.

[0023] Figure 5 It is a schematic diagram of the structure of the second precast beam in the first embodiment.

[0024] Figure 6 It is a schematic diagram of the structure of the third precast beam in the first, second and third embodiments.

[0025] Figure 7 It is the front view of the overall structure of the precast frame column.

[0026] Figure 8 It is the side view of the overall structure of the precast frame column.

[0027] Figure 9 It is a schematic diagram of the connection structure between the vertical steel bars and the mechanical connector.

[0028] Figure 10 It is the top view of the connection structure between the floor slab and the precast frame column.

[0029] Figure 11 It is the top view of the connection structure between the precast frame column and the load-bearing beam.

[0030] Figure 12 It is the top view of the connection structure between the first precast beam and the third precast beam.

[0031] Figure 13 It is Figure 12 The A-A cross-sectional view in

[0032] Figure 14 It is in the first embodiment Figure 12The sectional view taken along line B-B.

[0033] Figure 15 It is in the second embodiment Figure 12 The sectional view taken along line B-B.

[0034] Figure 16 It is a schematic diagram of the frame structure provided in the third embodiment.

[0035] Figure 17 It is a schematic diagram of the structure of a single building frame layer in the third embodiment.

[0036] Figure 18 It is an exploded view of the structure of a single building frame layer in the third embodiment.

[0037] Figure 19 It is in the third embodiment Figure 12 The sectional view taken along line B-B.

[0038] Figure 20 It is a schematic diagram of the frame structure provided in the fourth embodiment.

[0039] Figure 21 It is a schematic diagram of the structure of a single building frame layer in the fourth embodiment.

[0040] Figure 22 It is an exploded view of the structure of a single building frame layer in the fourth embodiment.

[0041] Figure 23 It is a schematic diagram of the structure of the third precast beam in the fourth embodiment.

[0042] Figure 24 It is in the fourth embodiment Figure 12 The sectional view taken along line B-B.

[0043] Description of main component symbols:

[0044] 1. Building frame layer;

[0045] 2. Precast frame column; 21. Upper frame column; 22. Lower frame column; 221. First concrete layer; 23. Mechanical connector; 231. Steel bar slot; 232. Steel bar plug; 24. First grouting layer; 25. Vertical steel bar; 26. Bracket; 27. Grouting pipe; 271. Injection pipe; 272. Overflow pipe;

[0046] 3. Load-bearing beam; 31. First precast beam; 311. Notch; 32. Second precast beam; 33. Third precast beam; 331. Step; 34. First transverse steel bar; 35. First stirrup; 36. U-shaped steel bar; 37. Second transverse steel bar; 38. Second stirrup; 39. Connection steel plate;

[0047] 4. Floor slab; 41. Through hole;

[0048] 5. Second concrete layer;

[0049] 6. Rivet. Specific implementation manner

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0051] Embodiment 1

[0052] Referring to the accompanying drawings of the specification, as Figures 1 - 14 shown, a quickly assembled reinforced concrete frame structure without bracing and formwork includes multiple building frame layers 1, wherein the building frame layer 1 includes:

[0053] Prefabricated frame columns 2. A corbel 26 is provided at the top of the prefabricated frame column 2, and vertical steel bars 25 are provided inside the prefabricated frame column 2. The prefabricated frame column 2 is divided into an upper frame column 21 and a lower frame column 22. The upper frame column 21 and the lower frame column 22 are connected by a mechanical connector 23, and the mechanical connector 23 is an existing product that can be directly purchased. Specifically, the mechanical connector 23 includes a steel bar slot 231, and the steel bar slot 231 is located at the top of the vertical steel bars 25 inside the upper frame column 21 and the lower frame column 22. A steel bar plug 232 protrudes from the bottom of the vertical steel bar 25 of the upper frame column 21, and the steel bar plug 232 is inserted into the steel bar slot 231 of the lower frame column 22, so that the upper frame column 21 and the lower frame column 22 are mechanically connected. The first concrete layer 221 is poured inside the lower frame column 22 to reinforce the lower frame column 22. When there are multiple building frame layers 1, the vertical steel bars 25 inside the prefabricated frame columns 2 in the upper layer and the lower layer can be connected by the mechanical connector 23 to realize the structural connection of the multiple building frame layers 1.

[0054] A first grouting layer 24 is provided at the connection between the upper frame column 21 and the lower frame column 22 to fill the gap between the upper frame column 21 and the lower frame column 22. Specifically, a vertical grouting pipe 27 is provided at the bottom of the lower frame column 22, and the bottom of the grouting pipe 27 is flush with the bottom surface of the upper frame column 21. An injection pipe 271 and an overflow pipe 272 protrude from the grouting pipe 27. The injection pipe 271 is located above the overflow pipe 272. Grout is injected into the grouting pipe 27 through the injection pipe 271. After the first grouting layer 24 is formed, the excess grout flows out from the overflow pipe 272, and the grouting is stopped.

[0055] The building frame layer 1 further includes a load-bearing beam 3, and the load-bearing beam 3 includes a first precast beam 31, a second precast beam 32, and a third precast beam 33. The end of the first precast beam 31 is fixed to the top of the precast frame column 2, the end of the second precast beam 32 is fixed to the corbel 26, and both ends of the third precast beam 33 are respectively fixed between two first precast beams 31. Specifically, a plurality of notches 311 are provided on the first precast beam 31, and steps 331 adapted to the notches 311 are provided at the ends of the third precast beam 33, so that the steps 331 at both ends of the third precast beam 33 overlap the notches 311.

[0056] The first precast beam 31 and the second precast beam 32 are provided with first transverse steel bars 34 and first stirrups 35. The first transverse steel bars 34 are located at the bottom of the first precast beam 31 and the second precast beam 32, and their two ends extend out of the first precast beam 31 and the second precast beam 32 and then bend upward; a plurality of first stirrups 35 are arranged in parallel, and the bottom of the first stirrups 35 is welded and fixed to the first transverse steel bars 34.

[0057] The building frame layer 1 further includes a floor slab 4, and the floor slab 4 is fixedly arranged above the third precast beam 33. Among them, the floor slab 4 can be a single-span floor slab, and its two ends are respectively fixed to two adjacent third precast beams 33. A single-span floor slab means that the length of a floor slab 4 only spans two adjacent third precast beams 33.

[0058] As Figure 12 shown, when the floor slab 4 is a single-span floor slab, when installing the third precast beam 33 and the floor slab 4, a U-shaped steel bar 36 is fixedly arranged on the top of the third precast beam 33, and the top of the U-shaped steel bar 36 passes through the gap between two floor slabs 4.

[0059] After the precast frame column 2, the load-bearing beam 3, and the floor slab 4 are installed, a second concrete layer 5 is filled in the precast frame column 2 and on the floor slab 4, so as to fill the precast frame column 2 and fix between the floor slab 4 and the third precast beam 33.

[0060] It can be seen that in this application, the precast frame columns 2 are connected by mechanical connectors 23, which solves the problem that the precast frame columns 2 need to be supported by columns; at the same time, the precast frame columns 2, the load-bearing beams 3, and the floor slabs 4 are precast structures, and there is no need to position and pour on the construction site. Only overall pouring is required after the above precast structures are assembled, reducing the pouring volume of on-site construction and improving the construction speed during the construction of the building frame.

[0061] Embodiment 2

[0062] As Figure 15As shown, compared with the first embodiment, in this embodiment, when the floor formwork 4 is a single-span floor formwork, when installing the third precast beam 33 and the floor formwork 4, a plurality of second transverse steel bars 37 and second stirrups 38 are arranged in the third precast beam 33. The shape of the second stirrup 38 is trapezoidal. The plurality of second transverse steel bars 37 are circumferentially distributed and are welded and fixed to the second stirrup 38. The second transverse steel bars 37 and the second stirrups 38 pass through the gap between two floor formworks 4.

[0063] Embodiment Three

[0064] As Figure 6 、 Figures 16 - 19 shown, compared with the first embodiment, in this embodiment, the floor formwork 4 is a multi-span floor formwork. Here, the multi-span floor formwork means that the length of one floor formwork 4 can span more than two third precast beams 33. The floor formwork 4 can be a concrete composite slab. This floor formwork 4 is a precast slab. As Figure 2 shown, at least one through hole 41 is preset on the floor formwork 4. A U-shaped steel bar 36 is fixedly arranged on the top of the third precast beam 33, and the top of the U-shaped steel bar 36 passes through the through hole 41.

[0065] Embodiment Four

[0066] As Figures 20 - 24 shown, compared with the third embodiment, in this embodiment, the floor formwork 4 can be a steel truss floor formwork or a profiled steel sheet. For the floor formwork 4 in this embodiment, it is not necessary to preset through holes 41 on the floor formwork 4. Specifically, a U-shaped steel bar 36 is arranged on the top of the third precast beam 33, and a connecting steel plate 39 is fixedly arranged between the U-shaped steel bar 36 and the floor formwork 4. The connecting steel plate 39 and the floor formwork 4 are fixed by rivets 6. Since the thickness of the steel truss floor formwork or the profiled steel sheet is relatively thin, it can be directly fixed by rivets 6.

[0067] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A fast-assembly, support-free and formwork-free reinforced concrete frame structure, comprising a multi-layer building frame layer, characterized in that: The building frame layer comprises: A prefabricated frame column, wherein a corbel is provided on the top of the prefabricated frame column, and vertical steel bars are provided inside the prefabricated frame column; the prefabricated frame column is divided into an upper frame column and a lower frame column, the upper frame column and the lower frame column are connected via a mechanical connector, a first concrete layer is poured inside the lower frame column, and a first grouting layer is provided at the connection between the upper frame column and the lower frame column; the mechanical connector comprises a steel bar slot, the steel bar slot is located at the top of the vertical steel bars in the upper frame column and the lower frame column, a steel bar plug is protrudingly provided at the bottom of the vertical steel bars of the upper frame column, and the steel bar plug is inserted into the steel bar slot located in the lower frame column; A load-bearing beam, wherein the load-bearing beam comprises a first prefabricated beam, a second prefabricated beam and a third prefabricated beam, wherein the end of the first prefabricated beam is fixed to the top of the prefabricated frame column, the end of the second prefabricated beam is fixed to the corbel, and the two ends of the third prefabricated beam are respectively fixed between the two first prefabricated beams; A floor decking plate, the floor decking plate is fixedly arranged above the third precast beam; A second concrete layer is filled inside the upper frame column and above the floor deck.

2. A fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: A grouting pipe is arranged at the bottom of the lower frame column, and the bottom of the grouting pipe is flush with the bottom surface of the upper frame column; an injection pipe and an overflow pipe are protrudingly arranged on the grouting pipe, and the injection pipe is located above the overflow pipe.

3. A fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: The first prefabricated beam is provided with a plurality of notches, and the ends of the third prefabricated beam are provided with steps adapted to the notches, so that the steps at both ends of the third prefabricated beam overlap the notches.

4. A fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: The first precast beam and the second precast beam are provided with first transverse steel bars and first stirrups; the first transverse steel bars are located at the bottom of the first precast beam and the second precast beam, and both ends thereof extend out of the first precast beam and the second precast beam and then bend upward; a plurality of the first stirrups are arranged parallel to each other, and the bottom of the first stirrups is welded and fixed to the first transverse steel bars.

5. The fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: The floor decking plate is a single-span floor decking plate, and both ends of the floor decking plate are respectively fixed to two adjacent third precast beams.

6. A fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 5, characterized in that: A U-shaped steel bar is fixedly arranged on the top of the third prefabricated beam, and the top of the U-shaped steel bar passes through the gap between the two floor decking plates.

7. The fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 5, characterized in that: A plurality of second transverse steel bars and second stirrups are arranged in the third precast beam. The second stirrups are trapezoidal in shape. The plurality of second transverse steel bars are distributed circumferentially and are welded and fixed to the second stirrups. The second transverse steel bars and the second stirrups pass through the gap between the two floor decking plates.

8. The fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: The floor decking plate is a multi-span floor decking plate.

9. The fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: The floor deck is a concrete composite slab, and at least one through hole is preset on the floor deck; a U-shaped steel bar is fixedly provided on the top of the third prefabricated beam, and the top of the U-shaped steel bar passes through the through hole.

10. The fast-assembly, support-free and formwork-free reinforced concrete frame structure according to claim 1, characterized in that: The floor decking plate is a steel truss floor decking plate or a corrugated steel plate; a U-shaped steel bar is arranged on the top of the third prefabricated beam, a connecting steel plate is fixedly arranged between the U-shaped steel bar and the floor decking plate, and the connecting steel plate and the floor decking plate are fixed by rivets.

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