Joint connecting structure for prefabricated main beam and prefabricated secondary beam

Abstract

The utility model relates to the technical field of engineering construction, in particular to a prefabricated main beam and prefabricated secondary beam connector connecting structure which comprises a main beam and two steel bar frames, secondary beams are arranged on the two sides of the main beam, the secondary beams are fixedly connected with the main beam through the steel bar frames, and the main beam is fixedly connected with the secondary beams through the steel bar frames. A connecting structure is arranged between the main beam and the secondary beam; the two secondary beams are hoisted to the position above the main beam, the two U-shaped steel channels are arranged in the two reserved rabbets correspondingly, then the supporting assemblies are installed in place, then concrete is poured into the reserved rabbets, and compared with comparison cases, the reserved rabbets and the U-shaped steel channels can be filled with the concrete in the construction process of the device; and meanwhile, due to the arrangement of the steel plates, the connection strength between the U-shaped channel steel and the concrete solidified after pouring is improved, and therefore the connection strength between the main beam and the secondary beam is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering construction, in particular to a joint connection structure of a prefabricated main beam and a prefabricated secondary beam. Background Art

[0002] With the development and promotion of urbanization and industrialization of real estate in my country, prefabricated components are increasingly used in the engineering field. At present, the production and construction of prefabricated components in China are in a rapid development stage, and various technologies are still being explored. The traditional connection form of prefabricated main beams and secondary beams is mainly to disconnect the connection nodes when a part of the prefabricated components are prefabricated, and then tie the steel bars at the node positions on site for post-casting. The form is complicated and inconvenient for construction. A support frame needs to be set up at the bottom of the prefabricated beam, the construction process increases, there are many quality risks, and the construction period is long.

[0003] After searching, it is found that the Chinese publicly authorized patent "A prefabricated main beam and secondary beam connection structure under a support-free system" is published with the publication number "CN218952440U". In this patent, it is necessary to embed square steel pipes in the secondary beams, and then build the square steel pipes in the reserved tongue and groove, and then pour concrete in the reserved tongue and groove, so that the bottom reinforcement of the secondary beam does not need to be anchored into the main beam, and the main and secondary beams are connected through the top square steel pipe tongue and groove. The prefabricated main beam has a reserved tongue and groove, and the prefabricated secondary beam has embedded square steel pipes to achieve the overlap connection of the prefabricated main and secondary beams under the support-free system. Through factory prefabrication, the purpose of rapid on-site assembly is achieved, and the connection form of the main and secondary beams when the lower part of the prefabricated main beam and the prefabricated secondary beam is unsupported, ensuring convenient and fast construction and high safety. However, the embedded square steel pipes in this comparative case are hollow. When concrete is poured in the reserved tongue and groove, it is not easy for the concrete to fill the middle of the square steel pipe, which can easily cause a hollow state at the connection between the main and secondary beams.

[0004] Therefore, a joint connection structure of a prefabricated main beam and a prefabricated secondary beam is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a prefabricated main beam and prefabricated secondary beam joint connection structure in order to solve the above-mentioned problem, which improves the problem that when pouring concrete in the reserved groove, the concrete is not easy to fill the middle of the square steel pipe, which easily causes the connection between the main and secondary beams to be hollow.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a prefabricated main beam and prefabricated secondary beam joint connection structure, comprising: a main beam and two steel bars, secondary beams are arranged on both sides of the main beam, the secondary beam and the main beam are fixedly connected by the steel bars, and a connection structure is arranged between the main beam and the secondary beam; wherein, the connection structure comprises two U-shaped channel steels, the U-shaped channel steel is embedded in one end of the secondary beam close to the main beam, reserved tongues and grooves are opened on both sides of the main beam, the other end of the U-shaped channel steel sequentially penetrates the inner walls of the secondary beam and the reserved tongue and groove and extends to the inside of the reserved tongue and groove, the inner bottom wall of the U-shaped channel steel is fixedly connected with equidistantly distributed steel plates, a support assembly is arranged at the bottom end of the main beam, the steel bars are embedded in the two secondary beams, and the bottom of the U-shaped channel steel The U-shaped channel steel is welded and fixed to the bottom end of the steel bar frame, and the inner wall of the U-shaped channel steel is fixedly connected with equidistantly distributed reinforcing ribs. When in use, two reserved grooves are left in advance during the construction of the main beam, and two steel bar frames are reserved inside the two secondary beams. The two U-shaped channel steels are respectively embedded in the opposite ends of the two secondary beams. Then the two secondary beams are hoisted to the top of the main beam, and the two U-shaped channel steels are respectively placed in the two reserved grooves. Then the supporting components are installed in place, and then concrete is poured into the reserved grooves. Compared with the comparative case, the device can use concrete to fill the reserved grooves and U-shaped channel steels during the construction process, and there will be no hollow inside the main beam and the secondary beam. At the same time, the setting of the steel plate increases the connection strength between the U-shaped channel steel and the concrete that solidifies after pouring, thereby increasing the connection strength between the main beam and the secondary beam.

[0007] Preferably, the supporting assembly includes two embedded plates, which are embedded in the interior of the main beam, and two plug-in plates are fixedly connected to the opposite sides of the two embedded plates. Two reserved slots are opened on the opposite sides of the two secondary beams, and the other ends of the plug-in plates penetrate into the interior of the reserved slots. Four embedded anchor bolts are arranged at the bottom of the embedded plates, and the embedded anchor bolts are embedded in the interior of the secondary beam. During production, the embedded plates and embedded anchor bolts are embedded in the main beam, and reserved slots are pre-arranged at the ends of the secondary beam. When the secondary beam is installed on the main beam, the reserved slots on the secondary beam will be stuck on the surface of the plug-in plates, so that the embedded plates and the plug-in plates can further support the secondary beam, thereby sharing the pressure on the U-shaped channel steel and improving the connection stability between the main beam and the secondary beam.

[0008] Preferably, two supporting ribs are fixedly connected between the two steel bar frames, two U-shaped steel bars are arranged above the supporting ribs, both ends of the U-shaped steel bar pass through the U-shaped channel steel and are fixedly connected with hooks, the hook is clamped with one of the reinforcing ribs, and reinforcing ribs are arranged on the surfaces of the two U-shaped steel bars, and the shape of the reinforcing ribs is U-shaped. After the U-shaped channel steel is placed in the reserved tongue and groove, the U-shaped steel bar is passed through the reinforcing ribs and hooked onto the reinforcing ribs in the two U-shaped channel steels through the hooks, and then the reinforcing ribs bent into a U-shape are used and put on the surfaces of the two U-shaped steel bars, and the two ends of the reinforcing ribs are fixed by welding, so that the U-shaped steel bar can further strengthen the stability between the two U-shaped channel steels, increase the connection strength between the secondary beam and the main beam, and at the same time, the reinforcing ribs can increase the tensile performance of the U-shaped steel bar.

[0009] Preferably, the surface of the steel plate is provided with evenly distributed resistance-increasing patterns, and the shape of the steel plate is a cube. The resistance-increasing patterns can further increase the friction between the steel plate and the concrete, and improve the connection stability between the main beam and the secondary beam.

[0010] The beneficial effects of the utility model are:

[0011] 1. When in use, hoist the two secondary beams above the main beam, and place the two U-shaped channel steels in the two reserved grooves respectively, then install the support components in place, and then pour concrete into the reserved grooves. Compared with the comparative case, during the construction of this device, the reserved grooves and U-shaped channel steels can be filled with concrete, and there will be no hollow inside the main beam and the secondary beam. At the same time, the setting of the steel plate increases the connection strength between the U-shaped channel steel and the concrete that solidifies after pouring, thereby increasing the connection strength between the main beam and the secondary beam;

[0012] 2. During production, the embedded plates and embedded anchor bolts are embedded in the main beam, and reserved notches are pre-set at the ends of the secondary beams. When the secondary beams are installed on the main beams, the reserved notches on the secondary beams will be stuck on the surface of the plug-in plates, so that the embedded plates and plug-in plates can further support the secondary beams, thereby sharing the pressure on the U-shaped channel steel and improving the connection stability between the main beams and the secondary beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0015] Figure 3 It is a bottom view schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the connection between the U-shaped channel steel and the U-shaped steel bar of the utility model.

[0017] In the figure: 1. Main beam; 2. Secondary beam; 3. Steel bar frame; 4. Connection structure; 41. U-shaped channel steel; 42. Reserved tongue and groove; 43. Reinforcement ribs; 44. Steel plate; 45. U-shaped steel bar; 46. Support ribs; 47. Reinforcement ribs; 48. Support assembly; 4801. Embedded plate; 4802. Plug-in plate; 4803. Reserved notch; 4804. Embedded anchor bolts. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] When implementing: Figure 1-4 As shown, a prefabricated main beam and prefabricated secondary beam joint connection structure comprises: a main beam 1 and two steel bars 3, secondary beams 2 are arranged on both sides of the main beam 1, the secondary beam 2 and the main beam 1 are fixedly connected by the steel bars 3, and a connection structure 4 is arranged between the main beam 1 and the secondary beam 2; wherein the connection structure 4 comprises two U-shaped channel steels 41, the U-shaped channel steels 41 are pre-buried in one end of the secondary beam 2 close to the main beam 1, reserved grooves 42 are opened on both sides of the main beam 1, the other end of the U-shaped channel steels 41 successively penetrates the inner walls of the secondary beam 2 and the reserved grooves 42 and extends to the inside of the reserved grooves 42, the inner bottom wall of the U-shaped channel steels 41 is fixedly connected with equidistantly distributed steel plates 44, and the main beam A support assembly 48 is provided at the bottom end of 1, a reinforcement frame 3 is embedded in the two secondary beams 2, the bottom of the U-shaped channel steel 41 is welded and fixed to the bottom end of the reinforcement frame 3, and the inner wall of the U-shaped channel steel 41 is fixedly connected with equidistantly distributed reinforcing ribs 43. When in use, two reserved grooves 42 are reserved in advance during the construction of the main beam 1, and two reinforcement frames 3 are reserved in the two secondary beams 2. Two U-shaped channel steels 41 are respectively embedded in the opposite ends of the two secondary beams 2, and then the two secondary beams 2 are hoisted above the main beam 1, and the two U-shaped channel steels 41 are respectively placed in the two reserved grooves 42, and then the support assembly 48 is installed in place, and then concrete is poured into the reserved grooves 42.

[0020] like Figure 1 , Figure 2 and Figure 3As shown, the support assembly 48 includes two embedded plates 4801, which are embedded in the main beam 1, and two plug-in plates 4802 are fixedly connected to the opposite sides of the two embedded plates 4801. Two reserved slots 4803 are opened on the opposite sides of the two secondary beams 2, and the other ends of the plug-in plates 4802 pass through the reserved slots 4803. Four embedded anchor bolts 4804 are arranged at the bottom of the embedded plates 4801, and the embedded anchor bolts 4804 are embedded in the secondary beam 2. During production, the embedded plates 4801 and the embedded anchor bolts 4804 are embedded in the main beam 1, and the reserved slots 4803 are pre-arranged at the ends of the secondary beam 2. When the secondary beam 2 is installed on the main beam 1, the reserved slots 4803 on the secondary beam 2 will be stuck on the surface of the plug-in plates 4802.

[0021] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two support ribs 46 are fixedly connected between the two steel bar frames 3, and two U-shaped steel bars 45 are arranged above the support ribs 46. Both ends of the U-shaped steel bar 45 pass through the U-shaped channel steel 41 and are fixedly connected with hooks. The hook is clamped with one of the reinforcing ribs 43. The surfaces of the two U-shaped steel bars 45 are provided with reinforcing ribs 47, and the shape of the reinforcing ribs 47 is a U-shape. After the U-shaped channel steel 41 is placed in the reserved groove 42, the U-shaped steel bar 45 is passed through the reinforcing ribs 43 and hooked with the reinforcing ribs 43 in the two U-shaped channel steels 41 through the hooks, and then the reinforcing ribs 47 bent into a U-shape are used and put on the surfaces of the two U-shaped steel bars 45, and the two ends of the reinforcing ribs 47 are fixed by welding.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the surface of the steel plate 44 is provided with evenly distributed resistance-increasing patterns, and the shape of the steel plate 44 is a cube.

[0023] When the utility model is in use, two reserved grooves 42 are left in advance during the construction of the main beam 1, and two steel bars 3 are reserved inside the two secondary beams 2, and two U-shaped channel steels 41 are respectively embedded in the opposite ends of the two secondary beams 2. During production, the embedded plate 4801 and the embedded anchor bolts 4804 are embedded in the main beam 1, and reserved grooves 4803 are pre-set at the ends of the secondary beams 2. Then, the two secondary beams 2 are hoisted above the main beam 1, and the two U-shaped channel steels 41 are respectively placed in the two reserved grooves 42. Then, the reserved grooves 4803 on the secondary beam 2 will be stuck on the surface of the plug-in plate 4802, and then the U-shaped steel bar 45 is passed through the reinforcing rib 43 and hooked on the reinforcing rib 43 in the two U-shaped channel steels 41 through a hook, and then the reinforcing rib 47 bent into a U-shape is used and is sleeved on the surface of the two U-shaped steel bars 45, and the two ends of the reinforcing rib 47 are fixed by welding, and then concrete is poured into the reserved groove 42.

[0024] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A prefabricated main beam and prefabricated secondary beam joint connection structure, characterized in that: include: A main beam (1) and two steel bars (3), secondary beams (2) are arranged on both sides of the main beam (1), the secondary beams (2) and the main beam (1) are fixedly connected via the steel bars (3), and a connecting structure (4) is arranged between the main beam (1) and the secondary beam (2); The connection structure (4) comprises two U-shaped channel steels (41), wherein the U-shaped channel steels (41) are embedded in one end of the secondary beam (2) close to the main beam (1), and both sides of the main beam (1) are provided with reserved grooves (42). The other end of the U-shaped channel steel (41) passes through the inner wall of the secondary beam (2) and the reserved groove (42) in sequence and extends to the inside of the reserved groove (42). The inner bottom wall of the U-shaped channel steel (41) is fixedly connected with steel plates (44) distributed at equal distances, and the bottom end of the main beam (1) is provided with a support assembly (48).

2. The prefabricated main beam and prefabricated secondary beam joint connection structure according to claim 1, characterized in that: The support assembly (48) comprises two embedded plates (4801), wherein the embedded plates (4801) are embedded in the interior of the main beam (1), and two plug-in plates (4802) are fixedly connected to the opposite sides of the two embedded plates (4801), and two reserved slots (4803) are provided on the opposite sides of the two secondary beams (2), and the other end of the plug-in plate (4802) passes through the interior of the reserved slot (4803).

3. The prefabricated main beam and prefabricated secondary beam joint connection structure according to claim 1, characterized in that: The reinforcement frame (3) is pre-buried inside the two secondary beams (2), and the bottom of the U-shaped channel steel (41) is welded and fixed to the bottom end of the reinforcement frame (3).

4. The joint connection structure of a prefabricated main beam and a prefabricated secondary beam according to claim 1, characterized in that: The inner wall of the U-shaped channel steel (41) is fixedly connected with reinforcing ribs (43) distributed at equal distances.

5. The prefabricated main beam and prefabricated secondary beam joint connection structure according to claim 4, characterized in that: Two support bars (46) are fixedly connected between the two reinforcement frames (3), two U-shaped reinforcement bars (45) are arranged above the support bars (46), both ends of the U-shaped reinforcement bars (45) pass through the U-shaped channel steel (41) and are fixedly connected with hooks, and the hooks are clamped with one of the reinforcement bars (43).

6. The prefabricated main beam and prefabricated secondary beam joint connection structure according to claim 5, characterized in that: Reinforcement bars (47) are arranged on the surfaces of the two U-shaped steel bars (45), and the shape of the reinforcement bars (47) is a Chinese-shaped U-shape.

7. The prefabricated main beam and prefabricated secondary beam joint connection structure according to claim 1, characterized in that: The surface of the steel plate (44) is provided with evenly distributed resistance-increasing patterns, and the shape of the steel plate (44) is a cube.

8. The joint connection structure of a prefabricated main beam and a prefabricated secondary beam according to claim 2, characterized in that: Four embedded anchor bolts (4804) are arranged at the bottom of the embedded plate (4801), and the embedded anchor bolts (4804) are embedded inside the secondary beam (2).

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