Full-assembly type prefabricated slab seam dry-type connecting piece

Abstract

The utility model discloses a dry-type connecting piece for a fully-assembled prefabricated slab joint, which belongs to the technical field of slab joint connection, solves the problems that the welding stress is concentrated and the hole pitch of bolt connection is not easy to center in the traditional floor slab joint connection, and comprises a first connecting piece, a second connecting piece and an energy consumption component, the first connecting piece is of a cubic structure, an n-shaped groove is formed in the first connecting piece in a penetrating mode, the second connecting piece is a tenon-shaped protruding block matched with the groove, the energy dissipation component comprises a plurality of first steel plates and second steel plates, round holes are formed in the first steel plates, and the two sides of the first steel plates are connected with one sides of the second steel plates correspondingly. And the other side of the second steel plate is connected with the short edge part of the second connecting piece. Bolt connection is not needed, only a small amount of welding is needed to achieve the effect of prefabricated floor slab seam connection, the shear deformation hysteretic effect can be used for counteracting an external load when the external load is borne, and it is guaranteed that the joint has enough strength and ductility to meet the structural use function requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of plate seam connection, and in particular relates to a fully assembled prefabricated plate seam dry type connector. Background Art

[0002] Fully assembled prefabricated panels refer to the prefabrication of concrete in the factory, which is made according to standardized modules and then transported to the site for assembly to form the floor material. Therefore, it is also called prefabricated concrete floor system or modular floor. The design and production of fully assembled prefabricated panels can be customized according to the needs of different buildings, solving the defects of long construction period, low safety factor and backward technology of house floor.

[0003] The joints between two fully assembled prefabricated slabs are usually connected by bolts or welding. Bolts are the connectors that act as combined connections for prefabricated slabs. They mainly rely on the shear resistance of the screws to withstand shear force. This type of connecting rod is simple and can be used in various projects. However, this connection method usually has the disadvantages of difficult hole alignment and poor effect in offsetting external loads on the slabs. This is especially difficult to do effectively in the construction of larger fully assembled prefabricated slabs, thus affecting the reliability and work efficiency of the connection. Welded connectors have stress concentration, large workload, and are affected by the quality of the welding process. Both methods have the problem of affecting the overall connection strength of the slab. Utility Model Content

[0004] The utility model aims to provide a fully assembled prefabricated plate seam dry type connector to solve the problems of stress concentration in welding and difficulty in centering the hole spacing of bolt connections in traditional floor plate seam connections.

[0005] The technical solution of the utility model is: a fully assembled prefabricated plate seam dry-type connector, including a first connector, a second connector and an energy-absorbing component, the first connector is a cubic structure, a groove in the shape of a few is opened through the first connector, the second connector is a tenon-shaped protrusion adapted to the groove, the energy-absorbing component includes a plurality of first steel plates and a second steel plate, a circular hole is opened on the first steel plate, both sides of the first steel plate are respectively connected to one side of the second steel plate, and the other side of the second steel plate is connected to the short side portion of the second connector.

[0006] As a further improvement of the utility model, an embedded part with a size matching the first connecting member is provided on the outer periphery of the first connecting member.

[0007] The beneficial effects of the utility model are as follows: the device is mainly used for the plate seam connection in the fully assembled prefabricated floor system. The first connecting part is connected to the embedded parts of the two floor slabs, and then the second connecting part is placed in the groove of the first connecting part. The energy-absorbing component between the two second connecting parts has the performance of shear hysteresis stability, and is less likely to break under the action of reciprocating vibration, and can achieve the tightening effect of bolt connection. The connection method of the groove of the first connecting part and the protrusion of the second connecting part has the advantages of quick connection, reliable connection effect, and avoidance of stress concentration caused by a large amount of welding. At the same time, compared with bolt connection, there is no need to consider the problem of inappropriate alignment of the bolt hole distance due to construction errors, and under the same welding or bolt conditions, it also has the hysteresis energy dissipation effect along the shear direction of the joint, which is faster and reduces construction costs. It is more economical under the same dry connection conditions.

[0008] The utility model does not require bolt connection and only needs a small amount of welding to achieve the function of prefabricated floor slab seam connection. It uses steel components to be easily manufactured to form the first connecting member, the second connecting member and the energy-absorbing member. It uses the characteristics of soft steel with good plasticity, low yield point and high ductility. When subjected to external loads, it uses the shear deformation hysteresis effect to offset the external load, so as to achieve the design principle of "strong node, weak member", ensure that the node has sufficient strength and ductility and meets the functional requirements of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a connection diagram for the use of the utility model;

[0010] Figure 2 This is a schematic diagram of the structure of the energy-consuming component in the utility model;

[0011] Figure 3 This is a schematic diagram of the structure of the first connecting member in the utility model;

[0012] Figure 4 This is a schematic diagram of the structure of the second connecting member in the utility model.

[0013] In the figure: 1-prefabricated floor; 2-anchor bar; 3-energy-absorbing component; 31-first steel plate; 32-second steel plate; 33-circular hole; 4-embedded part; 5-first connecting part; 51-groove; 6-second connecting part. DETAILED DESCRIPTION

[0014] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] like Figure 1-Figure 4As shown, a fully assembled prefabricated plate seam dry-type connector includes a first connector 5, a second connector 6 and an energy-absorbing component 3. The first connector 5 is a cubic structure, and a groove 51 in the shape of a polygon is formed through the first connector 5. The second connector 6 is a tenon-shaped protrusion matched with the groove 51. The energy-absorbing component 3 includes a plurality of first steel plates 31 and second steel plates 32. A circular hole 33 is formed on the first steel plate 31. Both sides of the first steel plate 31 are respectively connected to one side of the second steel plate 32, and the other side of the second steel plate 32 is connected to the short side of the second connector 6. The outer periphery of the first connector 5 is provided with an embedded part 4 whose size is matched with it.

[0016] The embedded parts 4 are built into the two prefabricated floor slabs 1, and the embedded parts 4 are connected by anchor bars 2, which can provide anchoring force in the prefabricated floor slabs 1 to ensure that the embedded parts 4 are not damaged under external forces. The first connecting part 5 can be directly placed in the embedded part 4, and the shear force, tension force or tensile shear force in the plane of the joint of the two prefabricated floor slabs 1 can be provided by the energy-absorbing steel plate 3, wherein the first steel plate 31 is arranged along the shear direction of the plate seam, and the second steel plates 32 on the left and right sides of the energy-absorbing steel plate 3 are each connected with a second connecting part 6, and the second connecting part 6 is placed in the groove 51 of the first connecting part 5. The size of the tenon-shaped second connecting part 6 can be slightly smaller than the tenon-shaped groove 51, and the second connecting part 6 is adapted to the groove 51 for easy placement, so that it can be quickly and conveniently placed as an integral part, and a small amount of welding can be performed around the upper surface of the first connecting part 5 and the second connecting part 6 to fix the second connecting part 6 in the groove 51 to prevent the second connecting part 6 from loosening.

[0017] When deformation occurs in the plane of the plate seam of the precast floor 1, the first steel plate 31 with multiple square holes provides shear, tension and combined tension-shear force, thereby ensuring that the plate seam connection of the precast floor 1 meets the design principle of "strong node, weak component".

Claims

1. A fully assembled prefabricated plate seam dry connector, characterized in that: The invention comprises a first connecting member (5), a second connecting member (6) and an energy-absorbing member (3), wherein the first connecting member (5) is a cubic structure, a groove (51) in the shape of a triangle is formed on the first connecting member (5), the second connecting member (6) is a tenon-shaped protrusion matched with the groove (51), and the energy-absorbing member (3) comprises a plurality of first steel plates (31) and a second steel plate (32), a circular hole (33) is formed on the first steel plate (31), two sides of the first steel plate (31) are respectively connected to one side of the second steel plate (32), and the other side of the second steel plate (32) is connected to the short side of the second connecting member (6).

2. A fully assembled prefabricated plate seam dry connector according to claim 1, characterized in that: An embedded part (4) having a size matching that of the first connecting part (5) is provided on the outer periphery of the first connecting part (5).

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