Cavity prefabricated superposed beam

Abstract

The utility model relates to the technical field of prefabricated superposed beam structures, in particular to a cavity prefabricated superposed beam which comprises a prefabricated beam component, the prefabricated beam component comprises a prefabricated cross beam, transverse reinforcing steel bars are transversely inserted into the prefabricated cross beam in a penetrating mode, the prefabricated cross beam is erected at the top end of a column set, and the column set comprises stand columns. Longitudinal steel bars are vertically inserted into the stand columns, the transverse steel bars are inserted into gaps of the longitudinal steel bars in a penetrating mode, two side supporting accessories are arranged on the side of the prefabricated cross beam, and a cast-in-place concrete beam is poured at the top end of the prefabricated cross beam. U-shaped steel frames are installed at the top end of a prefabricated cross beam at equal intervals, reinforcing steel bars are in butt joint with the four corners of each U-shaped steel frame through iron wires, and a cast-in-place concrete beam is poured at the top end of the prefabricated cross beam, so that the U-shaped steel frames and the reinforcing steel bars are arranged in the cast-in-place concrete beam; and the butt-joint reinforcing effect of the prefabricated cross beam and the cast-in-place concrete beam can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of precast composite beam structure technology, and in particular to a cavity precast composite beam. Background Technology

[0002] Precast hollow composite beams are a new type of building component widely used in modern building structural systems. They combine the advantages of precast components and cast-in-place concrete, offering advantages such as fast construction speed, controllable quality, and lower cost. However, precast composite beams have certain drawbacks. Due to material and process limitations, at the connection between the precast and cast-in-place parts of existing precast hollow composite beams, the overlap is only planar when directly poured. This often results in insufficient connection strength during jointing, easily leading to transverse cracking along the joint and affecting the overall structural stability. Therefore, a precast hollow composite beam is needed to solve these problems. Utility Model Content

[0003] The purpose of this invention is to solve the problems mentioned in the background section.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A precast composite beam with a cavity includes a precast beam component, the precast beam component including a precast crossbeam, the precast crossbeam having transverse reinforcing bars inserted transversely inside, the precast crossbeam being erected on the top of a column group, the column group including columns, the columns having longitudinal reinforcing bars inserted vertically inside, the transverse reinforcing bars being inserted between the longitudinal reinforcing bars, two side bracing fittings being provided on the sides of the precast crossbeam, and a cast-in-place concrete beam being poured at the top of the precast crossbeam.

[0006] Preferably, U-shaped steel frames are equidistantly installed at the top of the precast beam, and reinforcing bars are fixed at the corners of the U-shaped steel frames by wrapping them with wire. After the intersecting U-shaped steel frames and reinforcing bars are connected, they are built into the cast-in-place concrete beam, which can ensure the stability of the connection between the precast beam and the cast-in-place concrete beam.

[0007] Preferably, a number of steel cages are fixed at equal intervals on the outer side of the longitudinal steel bars by wires, and the top steel cage is fixed to the reinforcing steel bar by wires. The steel cage and the reinforcing steel bar are connected and fixed by wires, which can suspend and reinforce the precast beam.

[0008] Preferably, a groove is provided at the top of the precast beam, and several embedded grooves are provided at equal intervals in the groove. The design of the groove and the shallow groove can increase the contact area during casting and ensure the stability of the connection between the precast beam and the cast-in-place concrete beam.

[0009] Preferably, the precast beam has two protruding ends on the left and right sides of its bottom end, and the protruding ends are attached to the inner side of the top of the column. The two protruding ends at the bottom of the precast beam can be attached to the inner side of the top of the column to prevent the precast beam from shifting when it is suspended.

[0010] Preferably, the side support accessory includes a mounting plate, which is fixed to the side of the precast crossbeam by bolts. A side insert plate is embedded in the side of the mounting plate through a slot, and a support rod is connected to the bottom end of the side insert plate. A plate seat is connected to the end of the support rod. By inserting the side insert plate into the slot of the mounting plate, the support rod supports the precast crossbeam, ensuring the stability of the precast crossbeam erected and installed on the top of the column.

[0011] Preferably, the top of the left and right plate bases are covered with connecting plates, and the bottom of the connecting plates is provided with insert blocks. The insert blocks are inserted into the plate base through slots. The two support rods are connected to form a whole by inserting the bottom of the connecting plates into the slots of the plate base, thereby preventing the support rods from being deformed by local forces.

[0012] Preferably, a handle end for lifting is provided at the center of the top of the connecting plate.

[0013] This utility model has at least the following beneficial effects:

[0014] By setting up U-shaped steel frames and reinforcing bars, the reinforcement connection between the precast beams and the cast-in-place concrete beams is ensured. Compared with the traditional structure, this device installs U-shaped steel frames at equal intervals on the top of the precast beams, and reinforces the steel bars at the four corners of the U-shaped steel frames with wire. The cast-in-place concrete beam is then poured on top of the precast beams, so that the U-shaped steel frames and reinforcing bars are built into the cast-in-place concrete beams. A slot is opened on the top of the precast beams, and an embedded groove is opened in the slot, which can ensure the reinforcement effect of the connection between the precast beams and the cast-in-place concrete beams.

[0015] By setting up horizontal reinforcing bars, reinforcing cages, and longitudinal reinforcing bars, the stable placement of the precast beams is ensured. This device places the precast beams on the top of the columns, inserts the horizontal reinforcing bars inside the longitudinal reinforcing bars, and connects the horizontal reinforcing bars to the reinforcing cages with wires. The top reinforcing cage is connected to the reinforcing bars with wires. Later, concrete is poured at the top of the columns and the corners of the precast beams to form a whole, further improving the stability of the precast beams. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the external structure of a precast composite beam with a cavity proposed in this utility model;

[0018] Figure 2 This is a three-dimensional disassembly diagram of the precast beam components and column assemblies in a cavity precast composite beam proposed in this utility model;

[0019] Figure 3 This is a partial disassembly diagram of a precast beam component in a cavity precast composite beam proposed in this utility model;

[0020] Figure 4 This is a partial disassembly diagram of a side bracing component in a precast composite beam with a cavity, as proposed in this utility model.

[0021] Figure 5 This is a partial bottom view of the precast beam component in a cavity precast composite beam proposed in this utility model.

[0022] In the diagram: 1. Precast beam component; 11. Precast crossbeam; 12. Transverse reinforcement; 13. U-shaped steel frame; 14. Reinforcing reinforcement; 15. Cast-in-place concrete beam; 2. Column assembly; 21. Column; 22. Longitudinal reinforcement; 23. Reinforcing cage; 3. Side bracing accessories; 31. Hanging plate; 32. Side insert plate; 33. Support rod; 34. Plate base; 35. Connecting plate. Detailed Implementation

[0023] The following description is provided to enable those skilled in the art to implement and use the present invention and to incorporate it into specific application contexts. Various modifications and uses in different applications will be readily apparent to those skilled in the art, and the general principles defined herein are applicable to a wide range of embodiments. Therefore, the present invention is not limited to the embodiments given herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0024] In the following detailed description, numerous specific details are set forth to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that practice of the present invention is not necessarily limited to these specific details. In other words, well-known structures and devices are shown in block diagram form without detailed representation to avoid obscuring the present invention.

[0025] All documents and references submitted concurrently with this specification and open to public inspection are incorporated herein by reference. Unless otherwise expressly stated, all features disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by alternative features for the same, equivalent, or similar purpose. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a set of equivalent or similar features.

[0026] Note that, where used, the markings left, right, front, back, top, bottom, front, back, clockwise, and counterclockwise are merely for convenience and do not imply any specific fixed direction. In fact, they are used to reflect the relative position and / or orientation between different parts of an object. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Note that, in practice, "further," "preferably," "even further," and "more preferably" are simply starting points for describing another embodiment based on the foregoing embodiments. The combination of the content following "further," "preferably," "even further," or "more preferably" with the foregoing embodiments constitutes the complete configuration of another embodiment. Any combination of several "further," "preferably," "even further," or "more preferably" settings following the same embodiment can form yet another embodiment.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the aspects described below with reference to the accompanying drawings and specific embodiments are merely exemplary and should not be construed as limiting the scope of protection of the present invention in any way.

[0030] Reference Figure 1-5 A precast composite beam with a cavity includes a precast beam component 1, which includes a precast crossbeam 11. Transverse steel bars 12 are inserted transversely inside the precast crossbeam 11. The precast crossbeam 11 is erected on the top of a column group 2. The column group 2 includes a column 21. Longitudinal steel bars 22 are inserted vertically inside the column 21. Transverse steel bars 12 are inserted between the gaps of the longitudinal steel bars 22. Two side bracing accessories 3 are provided on the sides of the precast crossbeam 11. A cast-in-place concrete beam 15 is poured on the top of the precast crossbeam 11.

[0031] U-shaped steel frames 13 are equidistantly installed at the top of the precast beam 11, and reinforcing steel bars 14 are fixed at the corners of the U-shaped steel frames 13 by wrapping them with wire.

[0032] Several steel cage frames 23 are fixed at equal intervals on the outside of the longitudinal steel bar 22 by iron wire, and the top steel cage frame 23 is fixed to the reinforcing steel bar 14 by iron wire.

[0033] A groove is provided at the top of the precast crossbeam 11, and several embedded grooves are provided at equal intervals in the groove.

[0034] Two protruding ends are provided on the left and right sides of the bottom end of the precast crossbeam 11, and the protruding ends are attached to the inner side of the top of the column 21.

[0035] The side support accessory 3 includes a mounting plate 31, which is fixed to the side of the precast crossbeam 11 by bolts. A side insert plate 32 is inserted into the side of the mounting plate 31 through a slot, and a support rod 33 is connected to the bottom of the side insert plate 32. A plate base 34 is connected to the end of the support rod 33.

[0036] The top of the two left and right plate bases 34 are covered with connecting plates 35, and the bottom of the connecting plates 35 is provided with insert blocks, which are inserted into the plate bases 34 through slots.

[0037] A handle for lifting is provided at the center of the top of the connecting plate.

[0038] When concrete is poured at the top of the precast beam 11, the intersecting U-shaped steel frame 13 and the reinforcing steel bar 14 are connected and built into the cast-in-place concrete beam 15, which can ensure the stability of the connection between the precast beam 11 and the cast-in-place concrete beam 15. The steel cage 23 is connected and fixed to the reinforcing steel bar 14 by wire, which can suspend and reinforce the precast beam 11, ensuring the stability of the precast beam 11 when it is erected and placed.

[0039] When concrete is poured at the top of the precast beam 11, the cast-in-place concrete beam 15 after the concrete is poured can wrap around the U-shaped steel frame 13. The design of the groove and the inner shallow groove can increase the contact area during pouring, ensuring the stability of the connection between the precast beam 11 and the cast-in-place concrete beam 15. When the precast beam 11 is suspended, the two protruding ends at the bottom of the precast beam 11 can fit against the inner side of the top of the column 21 to prevent the precast beam 11 from shifting when suspended, which can play a certain role in installation positioning.

[0040] The side insert plate 32 is inserted into the slot of the mounting plate 31, so that the support rod 33 supports the precast beam 11, ensuring the stability of the precast beam 11 erected on the top of the column 21. After the precast beam 11, column 21 and cast-in-place concrete beam 15 are poured and connected, the mounting plate 31 is disassembled. When the plate base 34 is fixed to the ground surface by bolts, the insert block end of the connecting plate 35 is inserted into the slot of the plate base 34, thereby connecting the two support rods 33 into a whole and preventing local deformation of the support rod 33 under stress.

[0041] Working principle: According to the appendix Figure 1 Appendix Figure 2 As shown, during use, the precast crossbeam 11 is suspended on the top of the column 21 by the lifting equipment, so that the transverse steel bar 12 is inserted into the longitudinal steel bar 22 and initially fixed by wire. Several steel cage frames 23 are sequentially fitted and fixed on the outside of the longitudinal steel bar 22 and fixed by wire. At this time, the reinforcing steel bar 14 is inserted into the inside of the corner of the U-shaped steel frame 13. The reinforcing steel bar 14 is fixed at the corner of the U-shaped steel frame 13 by wire. The two ends of the reinforcing steel bar 14 are inserted into the longitudinal steel bar 22, and the longitudinal steel bar 22 and the two ends of the reinforcing steel bar 14 are fixed by wire.

[0042] According to the appendix Figure 3 As shown, concrete is poured from the top of the precast beam 11, filling the grooves and recesses of the precast beam 11. After the concrete is formed, a cast-in-place concrete beam 15 is created. During pouring, the concrete encases the U-shaped steel frame 13 and the reinforcing steel bars 14, ensuring the stability of the connection between the cast-in-place concrete beam 15 and the precast beam 11. At the same time, the precast beam 11 and the top of the column 21 are also poured simultaneously, so that after the concrete solidifies, it encases the transverse steel bars 12, the longitudinal steel bars 22 and the steel cage 23, making the precast beam 11 and the column 21 form an integral whole.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A cavity precast composite beam, characterized in that, The precast beam component (1) includes a precast crossbeam (11), with transverse steel bars (12) inserted inside the precast crossbeam (11). The precast crossbeam (11) is erected on the top of the column group (2). The column group (2) includes a column (21), with longitudinal steel bars (22) inserted inside the column (21). The transverse steel bars (12) are inserted between the gaps of the longitudinal steel bars (22). Two side bracing accessories (3) are provided on the side of the precast crossbeam (11). A cast-in-place concrete beam (15) is poured on the top of the precast crossbeam (11).

2. The precast composite beam with a cavity according to claim 1, characterized in that, U-shaped steel frames (13) are installed at equal intervals at the top of the precast beam (11), and reinforcing steel bars (14) are fixed at the corners of the U-shaped steel frames (13) by wrapping them with wire.

3. The precast composite beam with cavity as described in claim 1, characterized in that, Several steel cages (23) are fixed at equal intervals on the outside of the longitudinal steel bars (22) by iron wire.

4. A precast composite beam with a cavity according to claim 3, characterized in that, A steel cage (23) at the top is fixed to a reinforcing steel bar (14) by wire.

5. A precast composite beam with a cavity according to claim 1, characterized in that, The precast crossbeam (11) has a groove at its top, and several embedded grooves are provided at equal intervals in the groove.

6. A precast composite beam with a cavity according to claim 5, characterized in that, Two protruding ends are provided on the left and right sides of the bottom end of the precast crossbeam (11), and the protruding ends are attached to the inner side of the top of the column (21).

7. A precast composite beam with a cavity according to claim 6, characterized in that, The side support fitting (3) includes a mounting plate (31), which is fixed to the side of the precast crossbeam (11) by bolts, and a side insert plate (32) is inserted into the side of the mounting plate (31) through a slot.

8. A precast composite beam with a cavity according to claim 7, characterized in that, The bottom end of the side plate (32) is connected to a support rod (33), and the end of the support rod (33) is connected to a plate base (34).

9. A precast composite beam with a cavity according to claim 8, characterized in that, The top of the left and right plate bases (34) are covered with connecting plates (35), and the bottom of the connecting plates (35) is provided with insert blocks, which are inserted into the plate bases (34) through slots.

10. A precast composite beam with a cavity according to claim 9, characterized in that, The connecting plate (35) has a handle end for lifting at the center of its top.

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