High-low-strength concrete beam column joint structure

Abstract

The utility model discloses a high-strength and low-strength concrete beam column joint structure, which relates to the technical field of civil construction and comprises a high-strength column body, a low-strength beam body and a transition connecting piece arranged between the high-strength column body and the low-strength beam body. The transition connecting piece comprises a plurality of steel bar meshes fixedly arranged in the high-strength column body, a plurality of column main reinforcements fixedly arranged on the inner edges of the steel bar meshes, and a plurality of short joint bars fixedly arranged in the column main reinforcements. The high-strength column body made of high-performance concrete can bear large axial pressure, the low-strength beam body is made of common concrete, the transition connecting piece is located between the high-strength column body and the low-strength beam body and is responsible for tightly combining the two kinds of concrete with different strengths to form a stable overall structure, and due to the existence of the transition connecting piece, the strength of the high-strength column body is greatly improved. A stable physical occlusion mechanism is formed between high-strength concrete and low-strength concrete, and the overall stability of a node area and the anti-seismic property of a green building are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to civil engineering construction technical field especially is related to a high low intensity concrete beam column joint structure. BACKGROUND

[0002] Civil engineering construction is the construction of civil engineering. With scientific management and technological progress, civil engineering construction can save resources and reduce negative environmental impact to the maximum extent under the premise of ensuring quality, safety and other basic requirements, and realize "four conservation and environmental protection" (energy saving, land saving, water saving, material saving and environmental protection. Green construction in civil engineering construction is a systematic project, including construction organization design, construction preparation, construction operation, equipment maintenance and ecological restoration of construction site after completion, so as to realize green building energy saving.

[0003] At present, in the field of green building construction technology, especially for high-rise buildings and large-scale structure engineering such as bridge, it is very important to ensure the safety and durability of the structure, and the traditional concrete beam column joint design usually adopts unified strength grade concrete pouring. Although this method simplifies the construction process, in actual application, especially in earthquake-prone areas, it often cannot effectively meet the seismic demand of buildings. For this problem, the application provides a high low intensity concrete beam column joint structure. UTILITY MODEL CONTENT

[0004] The utility model provides a high low intensity concrete beam column joint structure in view of the deficiency of prior art, and the specific technical scheme is as follows:

[0005] A high low intensity concrete beam column joint structure, comprising a high strength column body, a low strength beam body and a transition connecting piece arranged between the high strength column body and the low strength beam body, wherein the transition connecting piece comprises a plurality of steel mesh fixedly arranged in the high strength column body, a plurality of column main reinforcement fixedly arranged at the inner edge of the steel mesh, and a plurality of short insert reinforcement fixedly arranged in the column main reinforcement, the middle part of the column main reinforcement and the short insert reinforcement extends into the low strength beam body, the top end and the bottom end of the column main reinforcement and the short insert reinforcement extend into the high strength column body, a plurality of L-shaped reinforcing plates are fixedly installed at the corner between the high strength column body and the low strength beam body, and an annular cover is slidably arranged on the outer wall of the high strength column body to cover the L-shaped reinforcing plates.

[0006] By adopting the above technical scheme, the high strength column body made of high performance concrete can withstand large axial pressure, while the low strength beam body is made of ordinary concrete and is mainly used for transmitting shear force. Due to the existence of the transition connecting piece, a stable physical occlusion mechanism is formed between the high and low intensity concrete, which greatly enhances the overall stability of the joint area and the seismic performance of the green building.

[0007] Optionally, mounting holes are formed in the two ends of the L-shaped reinforcing plate, and matching fixing bolts are movably arranged in the mounting holes of the L-shaped reinforcing plate, a plurality of fixing sleeves are embedded in the outer walls of the high-strength column body and the low-strength beam body, and one end of the fixing bolt is threadedly connected in the fixing sleeve.

[0008] By adopting the above technical scheme, the L-shaped reinforcing plate is used to reinforce the high-strength column body and the low-strength beam body from the outside, so that the connection strength and the anti-seismic performance of the concrete beam-column joint are further improved.

[0009] Optionally, a plurality of sliding grooves are formed in the inner wall of the annular cover, reset springs are fixedly arranged in the sliding grooves of the annular cover, a trapezoidal block is fixedly arranged at one end of the reset spring, a insertion hole is formed in one end of the L-shaped reinforcing plate, the end of the trapezoidal block close to the reset spring is slidably connected in the matching sliding groove, and the other end of the trapezoidal block is inserted in the insertion hole of the L-shaped reinforcing plate.

[0010] By adopting the above technical scheme, the annular cover can cover the L-shaped reinforcing plate, so that the L-shaped reinforcing plate is not exposed and affects the appearance, and the annular cover only needs to be pressed to the side of the L-shaped reinforcing plate and can be automatically fixed through the arrangement of the guide slope and the like.

[0011] Optionally, a guide slope is formed in the end of the L-shaped reinforcing plate close to the insertion hole, and the guide slope is used to guide the trapezoidal block to be completely pressed into the sliding groove when the annular cover covers the L-shaped reinforcing plate, a ring-shaped magnet is fixedly arranged at the edge of the end of the trapezoidal block close to the reset spring, and the outer side of the annular cover is provided with a placement indicating area for placing an external strong magnet.

[0012] By adopting the above technical scheme, when the external strong magnet is placed in the placement indicating area, the external strong magnet will be attracted to the ring-shaped magnet due to the magnetic force, so that the ring-shaped magnet moves to the outer side of the annular cover and presses the reset spring, so that one end of the trapezoidal block is separated from the insertion hole, and the annular cover is separated from the L-shaped reinforcing plate. At this time, the staff can pull the annular cover away from the L-shaped reinforcing plate, so as to quickly disassemble the annular cover.

[0013] In summary, the utility model has at least one of the following beneficial effects:

[0014] 1. The high-strength column body made of high-performance concrete can bear a large axial pressure, the low-strength beam body is made of ordinary concrete and is mainly used for transmitting shear force, the transition connecting piece is located between the two and is responsible for tightly combining the two kinds of concrete with different strengths to form a stable overall structure, and due to the existence of the transition connecting piece, a stable physical occlusion mechanism is formed between the high-strength and low-strength concrete, so that the overall stability of the joint area and the anti-seismic performance of the green building are greatly improved.

[0015] 2. The reinforcement of the high-strength column body and the low-strength beam body by the L-shaped reinforcing plate on the outer side can further improve the connection strength and the anti-seismic performance of the concrete beam column joint, since the fixing sleeve for connecting the L-shaped reinforcing plate is embedded in the high-strength column body and the low-strength beam body, the L-shaped reinforcing plate does not need to be on-site holed on the beam column joint when being installed, the installation is convenient, and the beam column joint is not damaged due to the on-site holed, the annular cover can cover the L-shaped reinforcing plate, the L-shaped reinforcing plate is prevented from being exposed to affect the appearance, the annular cover only needs to be pressed to the side of the L-shaped reinforcing plate and can be automatically fixed through the structure of the guide inclined surface, and the installation is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the internal structure schematic view of the whole structure of the utility model;

[0017] Figure 2 is the internal structure top view of the high-strength column body of the utility model;

[0018] Figure 3 is the enlarged view of the A structure in the utility model; Figure 1

[0019] Figure 4 is the enlarged view of the B structure in the utility model. Figure 3

[0020] Mark explanation: 1, high-strength column body;2, low-strength beam body;3, steel mesh;31, column main reinforcement;32, short inserted reinforcement;4, L-shaped reinforcing plate;41, mounting hole;42, fixed bolt;43, fixed sleeve;44, connecting ring;45, insertion hole;46, guide inclined surface;5, annular cover;51, sliding groove;52, reset spring;53, trapezoidal block;54, annular magnet;55, placement indication area. DETAILED DESCRIPTION

[0021] The utility model is further explained in detail as follows in combination with the drawings. Figures 1-4 The utility model is further explained in detail as follows in combination with the drawings.

[0022] The utility model embodiment discloses a high-low strength concrete beam column joint structure, referring to Figures 1-2 , comprising high-strength column body 1, low-strength beam body 2 and transition connecting piece, transition connecting piece is arranged between high-strength column body 1 and low-strength beam body 2, first pours high-strength column body 1 when construction, places prefabricated transition connecting piece after reaching certain strength, then successively lays ordinary concrete and vibrates and tamps to form low-strength beam body 2, until the whole beam body pouring is completed, and the application is applicable to the concrete beam column joint of green building in civil construction.

[0023] Refer to Figures 1-2 ​​The transition connecting piece includes a plurality of steel mesh sheets 3 fixed in the high-strength column body 1, a plurality of column main reinforcement bars 31 fixed at the inner edges of the steel mesh sheets 3, and a plurality of short reinforcement bars 32 fixed in the column main reinforcement bars 31, the middle portions of the column main reinforcement bars 31 and the short reinforcement bars 32 extending into the low-strength beam body 2, the top and bottom ends of both the column main reinforcement bars 31 and the short reinforcement bars 32 extending into the high-strength column body 1, and the steel mesh sheets 3, the column main reinforcement bars 31 and the short reinforcement bars 32 being capable of connecting both the high-strength column body 1 and the low-strength beam body 2, so that a stable physical engagement mechanism is formed between the high-strength and low-strength concretes, and the overall stability and seismic performance of the node area are greatly enhanced.

[0024] The high-strength column body 1 can be made of high-performance concrete with a C60 or above label, has excellent compressive strength and durability, and is used to bear large axial pressure, the low-strength beam body 2 can be made of ordinary concrete with a C30-C40 label, can effectively balance economy and safety, and is mainly used to transfer shear force, and the transition connecting piece can be made of HRB500 grade threaded steel bars, the diameter range of which can be φ8mm-φ12mm, and the grid spacing can be set to 10cm*10cm, which can not only ensure sufficient connection strength, but also facilitate construction.

[0025] Referring to Figure 1 With Figure 3 , a plurality of L-shaped reinforcing plates 4 are fixedly installed at the corners between the high-strength column body 1 and the low-strength beam body 2, the two ends of the L-shaped reinforcing plates 4 are provided with installation holes 41, the installation holes 41 of the L-shaped reinforcing plates 4 are movably provided with matching fixing bolts 42, the outer walls of the high-strength column body 1 and the low-strength beam body 2 are pre-buried with a plurality of fixing sleeves 43, one end of the fixing bolts 42 is threadedly connected in the fixing sleeves 43, the outer walls of one end of the plurality of fixing sleeves 43 are fixedly provided with a plurality of connecting rings 44, the plurality of connecting rings 44 are respectively fixedly provided in the high-strength column body 1 and the low-strength beam body 2, the fixing sleeves 43 can be installed on the specially-made formwork before concrete pouring, and will be pre-buried after concrete pouring, and will be fixed after the concrete solidifies, so that the L-shaped reinforcing plates 4 do not need to be on-site holed on the beam-column joint during installation, which facilitates installation and also prevents damage to the beam-column joint due to on-site holed.

[0026] The one end of the fixing bolt 42 is passed through the installation hole 41 of the L-shaped reinforcing plate 4 and screwed into the fixing sleeve 43, which can fix the plurality of L-shaped reinforcing plates 4 at the corners between the high-strength column body 1 and the low-strength beam body 2, so that the L-shaped reinforcing plates 4 can reinforce the high-strength column body 1 and the low-strength beam body 2 from the outside, which can further improve the connection strength and seismic performance of the concrete beam-column joint, and the connecting ring 44 can connect the high-strength column body 1, the low-strength beam body 2 and the fixing sleeve 43, improve the connection strength of the high-strength column body 1 and the low-strength beam body 2 to the fixing sleeve 43, and thus improve the stability of the L-shaped reinforcing plate 4 after installation.

[0027] With reference to Figure 1 With reference to Figure 3 The outer wall of the high-strength column 1 is slidably provided with a ring cover 5 for covering the L-shaped reinforcing plate 4, the ring cover 5 can cover the L-shaped reinforcing plate 4 and connect adjacent L-shaped reinforcing plates 4, thereby avoiding the L-shaped reinforcing plate 4 from being exposed and affecting the appearance.

[0028] With reference to Figures 3-4 A plurality of sliding grooves 51 are formed in the inner wall of the ring cover 5, a reset spring 52 is fixedly arranged in the sliding groove 51 of the ring cover 5, one end of the reset spring 52 is fixedly provided with a trapezoidal block 53, one end of the L-shaped reinforcing plate 4 is provided with a insertion hole 45, one end of the trapezoidal block 53 close to the reset spring 52 is slidably connected in the corresponding sliding groove 51, the other end of the trapezoidal block 53 is inserted in the insertion hole 45 of the L-shaped reinforcing plate 4 in a matched manner, the ring cover 5 can support and limit the trapezoidal block 53 through the sliding groove 51, and the trapezoidal block 53 will be pushed to the insertion hole 45 side under the elastic force of the reset spring 52.

[0029] With reference to Figures 3-4 One end of the L-shaped reinforcing plate 4 close to the insertion hole 45 is provided with a guide inclined surface 46 for completely pressing the trapezoidal block 53 into the sliding groove 51 through guidance when the ring cover 5 covers the L-shaped reinforcing plate 4, when it is needed to install the ring cover 5, the ring cover 5 is pushed to the L-shaped reinforcing plate 4 side, at this time, the trapezoidal block 53 can be completely pressed into the sliding groove 51 through the inclined surface of the trapezoidal block 53 under the guidance of the guide inclined surface 46, so that the trapezoidal block 53 will not hinder the movement of the ring cover 5, with the continuous movement of the ring cover 5, the ring cover 5 can cover the L-shaped reinforcing plate 4 and abut against the outer wall of the low-strength beam body 2, at this time, the trapezoidal block 53 will be automatically aligned with the insertion hole 45, then one end of the trapezoidal block 53 will be inserted into the corresponding insertion hole 45 under the elastic force of the reset spring 52, so as to fix the ring cover 5 and the L-shaped reinforcing plate 4.

[0030] With reference to Figures 3-4 One end of the trapezoidal block 53 close to the reset spring 52 is fixedly provided with a ring magnet 54, the outer side of the ring cover 5 is provided with a placement indicating area 55 for placing an external strong magnet, the placement indicating area 55 can be used for indicating the placement position of the external strong magnet, when the external strong magnet is placed in the placement indicating area 55, the external strong magnet will be adsorbed to the ring magnet 54 due to magnetic force, so that the ring magnet 54 moves to the outer side of the ring cover 5 and presses the reset spring 52, thereby making one end of the trapezoidal block 53 separate from the insertion hole 45, so that the ring cover 5 and the L-shaped reinforcing plate 4 are separated from each other, at this time, the staff can pull the ring cover 5 away from the L-shaped reinforcing plate 4, so as to quickly disassemble the ring cover 5.

[0031] The implementation principle of the high-low strength concrete beam column joint structure in the embodiment of the utility model is as follows:

[0032] During construction, the high-strength column body 1 is first poured, and after it reaches a certain strength, the prefabricated transition connecting piece is placed, then the ordinary concrete is laid and vibrated and compacted to form the low-strength beam body 2 in sequence, until the entire beam pouring is completed, the steel mesh 3, the column main reinforcement 31 and the short insert reinforcement 32 in the transition connecting piece can connect the high-strength column body 1 and the low-strength beam body 2, so that a stable physical engagement mechanism is formed between the high-strength and low-strength concrete, greatly enhancing the overall stability and seismic performance of the joint area.

[0033] The fixing bolt 42 passes through the mounting hole 41 of the L-shaped reinforcing plate 4 at one end and is screwed into the fixing sleeve 43, so that the plurality of L-shaped reinforcing plates 4 are fixedly installed at the corners between the high-strength column body 1 and the low-strength beam body 2, so that the L-shaped reinforcing plate 4 can reinforce the high-strength column body 1 and the low-strength beam body 2 from the outside, and the connection strength and seismic performance of the concrete beam-column joint can be further improved.

[0034] When the annular cover 5 needs to be installed, the annular cover 5 is pushed to the side of the L-shaped reinforcing plate 4, at this time, under the guidance of the guide inclined surface 46, the trapezoidal block 53 can be completely pressed into the sliding groove 51 through the inclined surface of the trapezoidal block 53, so that the trapezoidal block 53 does not hinder the movement of the annular cover 5, with the continuous movement of the annular cover 5, the annular cover 5 can cover the L-shaped reinforcing plate 4 and abut against the outer wall of the low-strength beam body 2, at this time, the trapezoidal block 53 will be automatically aligned with the insertion hole 45, then under the elastic force of the reset spring 52, one end of the trapezoidal block 53 will be inserted into the matching insertion hole 45, so as to fix the annular cover 5 and the L-shaped reinforcing plate 4.

[0035] When the external strong magnet is placed in the placement indication area 55, the external strong magnet will be attracted to the annular magnet 54 due to the magnetic force, so that the annular magnet 54 moves to the outside of the annular cover 5 and presses the reset spring 52, so that one end of the trapezoidal block 53 is separated from the insertion hole 45, and the annular cover 5 and the L-shaped reinforcing plate 4 are separated, at this time, the worker can pull the annular cover 5 away from the L-shaped reinforcing plate 4, so as to quickly disassemble the annular cover 5.

[0036] The above only describes preferred embodiments of the present application and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-low intensity concrete beam-column joint structure, characterized by, The utility model relates to a high-strength column (1), a low-strength beam (2) and a transition connector between the high-strength column (1) and the low-strength beam (2). The transition connector comprises a plurality of steel mesh sheets (3) fixed in the high-strength column (1), a plurality of column main reinforcement bars (31) fixed at the inner edges of the steel mesh sheets (3) and a plurality of short reinforcement bars (32) fixed in the column main reinforcement bars (31), the middle parts of the column main reinforcement bars (31) and the short reinforcement bars (32) extend into the low-strength beam (2), the top and bottom ends of both the column main reinforcement bars (31) and the short reinforcement bars (32) extend into the high-strength column (1), a plurality of L-shaped reinforcing plates (4) are fixedly installed at the corners between the high-strength column (1) and the low-strength beam (2), and a ring-shaped cover (5) is slidably arranged on the outer wall of the high-strength column (1) to cover the L-shaped reinforcing plates (4).

2. The high-low intensity beam-column joint structure of claim 1, wherein: The L-shaped reinforcing plates (4) are provided with mounting holes (41) at both ends, and the mounting holes (41) are movably provided with matching fixing bolts (42).

3. The high-low intensity beam-column joint structure of claim 2, wherein: The outer walls of the high-strength column (1) and the low-strength beam (2) are pre-buried with a plurality of fixing sleeves (43), and one end of the fixing bolts (42) is threadedly connected in the fixing sleeves (43).

4. The high-low intensity beam-column joint structure of claim 3, wherein: One end of the fixing sleeves (43) is fixedly provided with a plurality of connecting rings (44), and the connecting rings (44) are fixedly arranged in the high-strength column (1) and the low-strength beam (2), respectively.

5. The high-low intensity beam-column joint structure of claim 1, wherein: The ring-shaped cover (5) is provided with a plurality of sliding grooves (51) on the inner wall, the sliding grooves (51) are fixedly provided with return springs (52), and one end of the return springs (52) is fixedly provided with trapezoidal blocks (53).

6. The high-low intensity beam-column joint structure of claim 5, wherein: One end of the L-shaped reinforcing plates (4) is provided with a socket (45), the other end of the trapezoidal blocks (53) is inserted into the socket (45) of the L-shaped reinforcing plates (4), and the other end of the trapezoidal blocks (53) is slidably connected in the matching sliding grooves (51) close to the return springs (52).

7. The high-low intensity beam-column joint structure of claim 6, wherein: One end of the L-shaped reinforcing plates (4) close to the socket (45) is provided with a guide inclined surface (46) for completely pressing the trapezoidal blocks (53) into the sliding grooves (51) through guidance when the ring-shaped cover (5) covers the L-shaped reinforcing plates (4).

8. The high-low intensity beam-column joint structure of claim 7, wherein: One end of the trapezoidal blocks (53) close to the return springs (52) is fixedly provided with a ring-shaped magnet (54), and the outer side of the ring-shaped cover (5) is provided with a placement indicating area (55) for placing an external strong magnet.

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