Multi-span continuous prefabricated slab connecting assembly

Abstract

The utility model discloses a multi-span continuous precast slab connecting assembly, which is used for connecting more than two precast slabs on two sides of a precast beam, and comprises more than two pre-embedded connecting units, one pre-embedded connecting unit is fixed on the surface of one precast slab, and at least one pre-embedded connecting unit is arranged on each side of the precast beam; the connecting rod horizontally spans above the precast slab and the precast beam; a plurality of through holes for connection are formed in a rod body of the connecting rod; and the connecting piece is used for detachably connecting the embedded connecting unit and the connecting rod through the through hole. According to the prefabricated slab connecting mode, the structural stability can be effectively improved, construction and maintenance are convenient, and the cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated panels, and in particular relates to a multi-span continuous prefabricated panel connection component. Background Art

[0002] In construction projects, precast panels are widely used in floors, roofs and other parts of various buildings, and have become a common construction method. Compared with cast-in-place concrete structures, precast panel construction has the advantages of short construction period, low cost and controllable quality, so it is highly favored. However, in practical applications, there are also some problems that need to be solved in the connection technology of precast panels.

[0003] The most common precast panel connection method is the simple support connection. That is, the two ends of the precast panel are fixed by simple fulcrums to form a simple support system. This connection method is simple to operate and is widely used in various construction projects. However, after pouring concrete, the precast panel will be subjected to the bending moment from the concrete load, which will inevitably cause a certain deformation in the middle of the panel. This deformation not only affects the appearance of the structure, but may also pose a safety hazard to the entire floor. The main reasons are as follows:

[0004] 1. The prefabricated board itself is not strong enough. As a weak component, the prefabricated board itself has relatively low bending stiffness and is difficult to withstand large bending moments. This problem is particularly prominent for prefabricated boards with larger spans.

[0005] 2. The mechanical properties of the simply supported connection are poor. The simply supported connection can only provide simple support and cannot connect the precast panels into a whole so that they can show good overall mechanical properties when subjected to external loads. This causes the precast panels to deform significantly when subjected to concrete loads.

[0006] In addition, there are some problems with the installation and disassembly of simply supported connections. Due to the use of temporary support, the placement and connection of prefabricated panels are more complicated and the construction efficiency is low. Once quality problems or damage during use occur, it is difficult to repair them quickly. This has limited the promotion and application of prefabricated panel technology in construction projects to a certain extent.

[0007] In response to the above problems, the industry has proposed many improvement plans. Among them, the most representative is the use of a continuous prefabricated panel structure system. This solution greatly improves the overall force performance by making the prefabricated panel a continuous whole, thereby reducing the deformation of the middle part. But at the same time, this connection method also has some new problems:

[0008] 1. The connection is complex and the construction is difficult. Usually, welding, grouting and other methods are required for rigid connection, which is difficult to operate and not conducive to rapid installation.

[0009] 2. Inconvenient maintenance. Once local damage occurs, the entire connection system often needs to be dismantled and rebuilt, and the maintenance cost is high.

[0010] 3. Poor economic efficiency. The complex connection structure and construction process make the overall cost relatively high, which is not conducive to promotion and application.

[0011] Therefore, the existing prefabricated panel connection methods all have certain problems and limitations. At present, there is an urgent need to design a low-cost prefabricated panel connection method that can effectively improve structural stability, facilitate construction and maintenance, and is low-cost. Utility Model Content

[0012] In view of the various deficiencies and defects in the prior art, the purpose of this application is to provide a low-cost prefabricated panel connection method that can effectively improve structural stability and facilitate construction and maintenance, so as to overcome the above-mentioned problems in the prior art.

[0013] To achieve the above-mentioned purpose and other related purposes, the present application provides a multi-span continuous precast panel connection assembly for connecting two or more precast panels located on both sides of a precast beam, comprising: two or more embedded connection units, the number of which corresponds to the number of precast panels, one of the embedded connection units being fixed to the surface of a precast panel, and at least one embedded connection unit being arranged on each side of the precast beam; a connecting rod, the connecting rod horizontally spanning above the precast panels and the precast beam; a plurality of through holes for connection are arranged on the rod body of the connecting rod; and a connecting piece for detachably connecting the embedded connection unit and the connecting rod through the through holes.

[0014] According to any one of the embodiments provided in the present application, the embedded connection unit includes: a base and a fixing member; the base is fixed to the surface of the prefabricated board, the fixing member is arranged at the central axis of the base, part of the fixing member is embedded in the prefabricated board, and the fixing member is used to adapt to the connecting member.

[0015] According to any one of the embodiments provided in the present application, the base is made of one or more combinations of the following: concrete piers, channel steels, square steel pipes, and H-shaped steels.

[0016] According to any one of the embodiments provided in the present application, the base is integrally fixed when the precast panel is poured with concrete.

[0017] According to any embodiment provided in the present application, the fixing member is made of one or more combinations of the following: an embedded sleeve and a nut.

[0018] According to any embodiment provided in the present application, the connecting rod is made of one or more combinations of the following: square steel pipe, channel steel.

[0019] According to any one of the embodiments provided in the present application, the connecting piece is made by one or more combinations of the following: bolts, rivets.

[0020] According to any one of the embodiments provided in the present application, it also includes: a support frame located at the bottom of the prefabricated board, the support frame and the fulcrum of the prefabricated board are used to support the prefabricated board; the embedded connection unit is located between the fulcrum and the prefabricated beam.

[0021] According to any one of the embodiments provided in the present application, it also includes: a cast-in-place layer, which is cast on the prefabricated panels and the connecting rods and is used to fix the prefabricated panels, embedded connecting units, connecting rods and connecting parts.

[0022] According to any one of the embodiments provided in the present application, the precast beam and the cast-in-place layer are cast integrally.

[0023] Beneficial effects of the utility model:

[0024] The structural stability is significantly improved by combining the originally independent simply supported prefabricated panels into a continuous whole, which greatly reduces the bending moment borne by the prefabricated panels themselves, avoids the problem of excessive deformation in the middle part, and enhances the stability of the overall structure.

[0025] The installation is convenient and efficient. The detachable connection method makes the positioning and connection of the prefabricated panels simple and quick, greatly improving the construction efficiency. The embedded channel steel parts embedded in the prefabricated panels and the exposed steel pipe connecting rods can be connected by simple bolts, which is convenient and flexible to operate.

[0026] The economical performance is good. Compared with the traditional complex connection methods such as welding or grouting, the material and labor costs required for this connection component are lower, which has obvious economic advantages.

[0027] Maintenance is convenient. Once local damage occurs, you only need to remove the relevant detachable parts for maintenance. There is no need to dismantle the entire connection system on a large scale, which greatly reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 This is a schematic diagram of a multi-span continuous prefabricated panel connection assembly for the present application.

[0030] Figure 2It is a schematic diagram of the bending moment borne by the precast slab under the simply supported slab in the prior art.

[0031] Figure 3 Schematic diagram of the bending moment borne by the precast slab under the continuous precast slab connection assembly across the present application.

[0032] Description of Figure Numbers:

[0033] 1-precast beam, 2-precast slab, 3-embedded connection unit, 31-base, 32-fixing part, 33-connecting steel bar, 4-connecting rod, 5-connecting part, 6-cast-in-place layer, 7-support frame. DETAILED DESCRIPTION

[0034] 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.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc., are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting", "connection", "connection" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Exemplary Embodiments

[0038] The present exemplary embodiment provides a multi-span continuous precast panel connection assembly for connecting two or more precast panels 2 located on both sides of a precast beam 1, comprising: two or more embedded connection units 3, the number of which corresponds to the number of precast panels 2, one embedded connection unit 3 being fixed to the surface of one precast panel 2, and at least one embedded connection unit 3 being arranged on each side of the precast beam 1; a connecting rod 4, the connecting rod 4 horizontally spanning above the precast panel 2 and the precast beam 1; a plurality of through holes for connection are arranged on the rod body of the connecting rod 4; and a connecting piece 5 for detachably connecting the embedded connection unit 3 and the connecting rod 4 through the through holes.

[0039] In this exemplary embodiment, the embedded connection unit 3 includes: a base 31 and a fixing member 32; the base 31 is fixed to the surface of the prefabricated panel 2, the fixing member 32 is arranged at the central axis of the base 31, part of the fixing member 32 is embedded in the prefabricated panel 2, and the fixing member 32 is used to adapt to the connecting member 5.

[0040] In this exemplary embodiment, the base 31 is made of one or more combinations of the following: concrete piers, channel steels, square steel pipes, and H-shaped steels.

[0041] In this exemplary embodiment, the base 31 is fixed integrally when the precast panel 2 is poured with concrete.

[0042] In this exemplary embodiment, the fixing member 32 is made of one or more combinations of the following: a pre-buried sleeve and a nut.

[0043] In this exemplary embodiment, the connecting rod 4 is made of one or more of the following combinations: square steel pipe, channel steel.

[0044] In this exemplary embodiment, the connecting member 5 is made of one or more of the following combinations: bolts, rivets.

[0045] In this exemplary embodiment, it also includes: a support frame 7 located at the bottom of the prefabricated panel 2, and the support frame 7 and the support point of the prefabricated panel 2 are used to support the prefabricated panel 2; the embedded connection unit 3 is located between the support point and the prefabricated beam 1.

[0046] In this exemplary embodiment, it also includes: a cast-in-place layer 6, which is cast on the prefabricated panel 2 and the connecting rod 4 and is used to fix the prefabricated panel 2, the embedded connecting unit 3, the connecting rod 4 and the connecting piece 5.

[0047] In this exemplary embodiment, the precast beam 1 and the cast-in-place layer 6 are cast integrally. Specific embodiments

[0049] like Figure 1As shown, this embodiment provides a multi-span continuous precast panel connection assembly for connecting two or more precast panels 2 located on both sides of a precast beam 1, including: two or more embedded connection units 3, connecting rods 4 and connecting parts 5.

[0050] The number of the embedded connection units 3 corresponds to the number of the prefabricated panels 2, one embedded connection unit 3 is fixed to the surface of one prefabricated panel 2, and at least one embedded connection unit 3 is provided on each side of the prefabricated beam 1. Specifically, the embedded connection unit 3 includes a base 31 and a fixing member 32; the base 31 is fixed to the surface of the prefabricated panel 2, the fixing member 32 is provided at the central axis of the base 31, a part of the fixing member 32 is embedded in the prefabricated panel 2, and the fixing member 32 is used to adapt to the connection member 5.

[0051] More specifically, the base 31 is made of one or more of the following combinations: concrete piers, channel steel, square steel pipes, and H-shaped steel. Parts of the channel steel, square steel, or H-shaped steel can be pre-buried in the precast panel 2 and integrally connected and fixed to the precast panel 2. If a concrete pier is used as the base 31, it can also be integrally made with the precast panel 2 by adding a mold when casting the precast panel 2.

[0052] More specifically, the fixing member 32 is made of one or more of the following combinations: a pre-buried sleeve, a nut. Figure 1 Taking the embedded sleeve as an example, a connecting steel bar 33 is provided transversely through the bottom of the embedded sleeve, and the bottom of the embedded sleeve and its connecting steel bar 33 are pre-embedded in the prefabricated panel 2 and are integrally connected and fixed to the prefabricated panel 2. A threaded structure is provided in the center of the embedded sleeve for matching with the thread of the connector 5.

[0053] If the base 31 is made of channel steel, square steel or H-shaped steel, the fixing member 32 can be connected to the base 31 and the connecting member 5 by a nut. The specific method is to open a hole at a corresponding position on the base 31, extend the connecting member 5 into the connecting rod 4 and the hole, and fix it by a nut.

[0054] This embodiment uses a square steel pipe as the connecting rod 4, and the connecting rod 4 horizontally spans above the prefabricated plate 2 and the prefabricated beam 1; the connecting rod 4 is provided with a plurality of through holes for connection on the rod body; the connecting member 5 is used to detachably connect the embedded connection unit 3 and the connecting rod 4 through the through holes.

[0055] In this embodiment, the connecting member 5 is made of a bolt, and the thread on the bolt cooperates with the embedded sleeve to provide a strong connection between the prefabricated panel 2 and the connecting rod 4.

[0056] Specifically refer to the support frame 7 in 1, the support frame 7 is located at the bottom of the precast panel 2, the support frame 7 and the fulcrum of the precast panel 2 are used to support the precast panel 2, and the embedded connection unit 3 is located between the fulcrum and the precast beam 1.

[0057] Before pouring concrete, workers can check the above components and adjust and disassemble any component at any time, which provides convenience for construction and maintenance.

[0058] After the connection is confirmed as above, concrete is poured on the precast panel 2 to form a cast-in-place layer 6, so that the components of the multi-span continuous precast panel connection assembly are buried in the concrete, thereby realizing the multi-span connection and fixation of the precast panel 2. Figure 3 From the force analysis shown, it can be seen that by setting a connecting rod 4 across a precast beam 1 serving as a support plate, part of the bending moment M originally borne on the precast plate 2 is transferred to the precast beam 1, and finally the bending moment borne on the precast plate 2 is reduced to M / 3, thereby greatly reducing the possibility of deformation of the precast plate 2.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, improvements, equivalent substitutions, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-span continuous prefabricated panel connection assembly, used to connect two or more prefabricated panels located on both sides of a prefabricated beam, characterized in that: include: Two or more pre-embedded connection units, the number of which corresponds to the number of precast panels, one of which is fixed to the surface of one precast panel, and at least one pre-embedded connection unit is provided on each side of the precast beam; A connecting rod, the connecting rod horizontally spans above the prefabricated plate and the prefabricated beam; the connecting rod is provided with a plurality of through holes for connection; A connecting piece is used to detachably connect the embedded connecting unit and the connecting rod through the through hole.

2. The multi-span continuous prefabricated panel connection assembly according to claim 1, characterized in that: The embedded connection unit includes: a base and a fixing part; the base is fixed to the surface of the prefabricated board, the fixing part is arranged at the central axis of the base, part of the fixing part is embedded in the prefabricated board, and the fixing part is used to adapt to the connection part.

3. The multi-span continuous prefabricated panel connection assembly according to claim 2, characterized in that: The base is made of one or more of the following combinations: concrete pier, channel steel, square steel pipe, H-shaped steel.

4. The multi-span continuous prefabricated panel connection assembly according to claim 3, characterized in that: The base is fixed integrally when the precast slab is poured with concrete.

5. The multi-span continuous prefabricated panel connection assembly according to claim 2, characterized in that: The fixing piece is made of one or more combinations of the following: embedded sleeves and nuts.

6. The multi-span continuous prefabricated panel connection assembly according to claim 1, characterized in that: The connecting rod is made of one or more of the following combinations: square steel pipe, channel steel.

7. The multi-span continuous prefabricated panel connection assembly according to claim 1, characterized in that: The connecting piece is made by one or more combinations of the following: bolts, rivets.

8. The multi-span continuous prefabricated panel connection assembly according to any one of claims 1 to 7, characterized in that: It also includes: a support frame located at the bottom of the prefabricated board, the support frame and the fulcrum of the prefabricated board are used to support the prefabricated board; the embedded connection unit is located between the fulcrum and the prefabricated beam.

9. The multi-span continuous prefabricated panel connection assembly according to any one of claims 1 to 7, characterized in that: Also includes: A cast-in-place layer is cast on the precast slab and the connecting rod and is used to fix the precast slab, the embedded connecting unit, the connecting rod and the connecting piece.

10. The multi-span continuous prefabricated panel connection assembly according to claim 9, characterized in that: The prefabricated beam and the cast-in-place layer are cast in one piece.

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