Prefabricated floor slab and PEC column connecting joint

Abstract

The utility model discloses a prefabricated floor slab and PEC column connecting joint which comprises a PEC column, two prefabricated floor slabs oppositely arranged at the top of the PEC column, a plurality of shear-resistant connecting ribs arranged on the top face of the PEC column at intervals and a cast-in-place concrete layer poured between the two prefabricated floor slabs and the top face of the PEC column. The PEC column comprises an upper connecting plate and a lower connecting plate which are oppositely arranged up and down, a plurality of stirrup assemblies arranged between the upper connecting plate and the lower connecting plate at intervals and a pre-cast concrete layer formed between the upper connecting plate and the lower connecting plate in a pouring mode, and each stirrup assembly comprises two stirrups oppositely arranged left and right; the stirrups extend upwards to the upper portion of the upper connecting plate and are connected with the prefabricated floor slabs on the same side. The prefabricated floor slab comprises a floor slab body, a plurality of first connecting parts formed at the end of the floor slab body and connected with the multiple shear-resistant connecting ribs, and a plurality of second connecting parts connected with the multiple stirrups on the same side. The connection node is simple in overall structure, high in strength and not prone to cracking, and it is ensured that the connection node is used in a transformer substation.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of substation assembly building, specifically relates to a prefabricated floor and PEC column connecting joint. BACKGROUND

[0002] The building assembled by the prefabricated components at the construction site is called the assembly building, that is, with the development of modern industrial technology, the house can be manufactured in batches like machine production, just prefabricate the house components (beams, boards, columns and the like) in the factory, and then the house is assembled at the construction site, the assembly building greatly reduces the cast-in-place operation of the traditional building, is more efficient and more environmentally friendly, and thus is more and more widely used.

[0003] The prefabricated floor can meet the engineering requirement of complete factory production and on-site assembly installation, has less wet operation on site, significantly improves the construction efficiency, is more green and environmentally friendly, and has remarkable economic benefits. However, due to the size limitation of the floor during transportation, there is inevitably a joint between the adjacent prefabricated floors. The physical connection joint between the prefabricated floors affects the shear resistance, bending stiffness and bearing capacity of the floor surface, and thus significantly reduces the integrity of the floor. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of the prior art, and provides a prefabricated floor and PEC column connecting joint.

[0005] The utility model adopts the following technical scheme:

[0006] A prefabricated floor and PEC column connecting joint, comprising a PEC column, two prefabricated floors oppositely arranged at the top of the PEC column, a plurality of shear connecting bars arranged at the top surface of the PEC column, and a cast-in-place concrete layer poured between the two prefabricated floors and the top surface of the PEC column,

[0007] The PEC column comprises an upper connecting plate and a lower connecting plate oppositely arranged, a plurality of stirrup assemblies arranged between the upper connecting plate and the lower connecting plate, and a precast concrete layer formed between the upper connecting plate and the lower connecting plate, the stirrup assembly comprises two stirrups oppositely arranged, and the stirrup extends upwards above the upper connecting plate and is connected with the same side prefabricated floor;

[0008] The prefabricated floor comprises a floor body, a plurality of first connecting parts formed at the ends of the floor body and connected with the plurality of shear connecting bars respectively, and a plurality of second connecting parts formed at the ends of the floor body and connected with the same side plurality of stirrups respectively.

[0009] Preferably, the floor body comprises a beam body cast by concrete and a plurality of connecting rib assemblies arranged in the beam body at intervals, the connecting rib assembly comprises a first connecting rib and a second connecting rib arranged in the beam body at intervals, the beam body is supported on the top of the upper connecting plate, one end of the first connecting rib is located in the beam body, and the other end extends outward to form the first connecting part outside the beam body; one end of the second connecting rib is located in the beam body, and the other end extends outward to form the second connecting part outside the beam body.

[0010] Preferably, the connecting rib assembly further comprises a plurality of fixing ribs arranged in the beam body at intervals between the first connecting rib and the second connecting rib, and the floor body further comprises a plurality of positioning ribs arranged in the beam body perpendicularly to the plurality of connecting rib assemblies, the plurality of fixing ribs correspond to the plurality of positioning ribs one by one, and the positioning rib connects a plurality of fixing ribs on the same horizontal line of the plurality of connecting rib assemblies.

[0011] Preferably, the stirrup comprises a lower horizontal segment supported on the lower connecting plate, a vertical segment connected to the lower horizontal segment and extending out of the upper connecting plate, and an upper horizontal segment connected to the vertical segment and located on the top of the upper connecting plate.

[0012] Preferably, the first connecting part comprises an extension segment supported on the upper horizontal segment and a connecting segment arranged perpendicularly to the extension segment and attached to the side edge of the shear connecting rib.

[0013] Preferably, the shear connecting rib and the connecting segments of the two first connecting parts on the left and right sides thereof are fixed by steel wires.

[0014] Preferably, the second connecting part is in the shape of a hook and is connected to the opposite vertical segment.

[0015] Preferably, the PEC column further comprises a plurality of reinforcing ribs arranged in the vertical direction at intervals between the upper connecting plate and the connecting plate, and the reinforcing rib is connected between a plurality of stirrups arranged on the same side.

[0016] As can be seen from the above description of the utility model, compared with the prior art, the utility model has the beneficial effects that: by limiting the structure of the connecting node and the structure of the end of the prefabricated floor, the first connecting part is connected to the shear connecting rib arranged on the top of the PEC column, and the second connecting part is connected to the stirrup extending upward in the PEC column, so as to realize the quick connection of the PEC column and the two prefabricated floors, and also improve the strength of the connection between the two prefabricated floors and the PEC column; the overall structure is simple, easy to install, and the force transmission is clear, and cracking is not easy to occur, thereby ensuring the use in the substation. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structural diagram of the connecting node;

[0018] Fig. 2It is a structural schematic diagram of the PEC column;

[0019] Fig. 3 It is a partial structural schematic diagram of the connecting node;

[0020] Fig. 4 It is a structural schematic diagram of the second connecting rib;

[0021] In the figure, 1-PEC column, 2-precast floor, 3-shear connecting rib, 4-cast-in-situ concrete layer, 5-steel wire, 11-upper connecting plate, 12-lower connecting plate, 13-stirrup, 131-lower horizontal section, 132-vertical section, 133-upper horizontal section, 14-precast concrete layer, 15-strengthening rib, 21-floor body, 22-first connecting part, 221-extension section, 222-connecting section, 23-second connecting part, 24-beam body, 25-connecting rib assembly, 251-first connecting rib, 252-second connecting rib, 253-fixing rib, 26-positioning rib. DETAILED DESCRIPTION

[0022] The utility model will be further described below through the specific implementation.

[0023] Referring to Figs. 1 to 4 As shown in the figure, a precast floor and PEC column connecting node can be used in the assembled building of the substation, comprising a PEC column 1, two precast floors 2 oppositely arranged at the top of the PEC column 1, a plurality of shear connecting ribs 3 arranged at intervals on the top surface of the PEC column 1, and a cast-in-situ concrete layer 4 poured between the two precast floors 2 and the top surface of the PEC column 1.

[0024] The PEC column 1 comprises an upper connecting plate 11 and a lower connecting plate 12 oppositely arranged up and down, a plurality of stirrup assemblies arranged at intervals between the upper connecting plate 11 and the lower connecting plate 12, a precast concrete layer 14 poured between the upper connecting plate 11 and the lower connecting plate 12, and a plurality of strengthening ribs 15 arranged between the upper connecting plate 11 and the lower connecting plate 12. Specifically, the stirrup assembly comprises two stirrups 13 oppositely arranged left and right, and the stirrup 13 extends upward above the upper connecting plate 11 and connects with the same side precast floor 2; the plurality of strengthening ribs 15 are arranged at intervals in the vertical direction, and the strengthening rib 15 is connected with the plurality of stirrups 13 arranged on the same side; further, the stirrup 13 comprises a lower horizontal section 131 supported on the lower connecting plate 12, a vertical section 132 extending upward from the lower horizontal section 131 and out of the upper connecting plate 11, and an upper horizontal section 133 connected perpendicularly with the vertical section 132 and located on the top of the upper connecting plate 11. By limiting the structure of the stirrup 13, the upper end thereof extends into the cast-in-situ concrete layer 4 to improve the connecting strength of the cast-in-situ concrete layer 4 and the PEC column 1.

[0025] The shear connecting rib 3 is arranged in a T shape, with the lower end connected with the top of the upper connecting plate 11 and the upper end flush with the cast-in-situ concrete layer 4.

[0026] The prefabricated floor 2 comprises a floor body 21, a plurality of first connecting portions 22 formed at the ends of the floor body 21 and connected with a plurality of shear connecting bars 3 respectively, and a plurality of second connecting portions 23 formed at the ends of the floor body 21 and connected with a plurality of stirrups 13 on the same side respectively, wherein the first connecting portion 22 is arranged opposite to the second connecting portion 23 in an up-down manner, and specifically, the first connecting portion 22 comprises an extension segment 221 supported on the upper horizontal segment 133 and a connecting segment 222 arranged perpendicularly to the extension segment 221 and attached to the side edge of the shear connecting bar 3, and the shear connecting bar 3 is fixed by the steel wire 5 to the connecting segments 222 of the two first connecting portions 22 on the left and right sides thereof; further, the second connecting portion 23 is in the shape of a hook and connected with the opposite vertical segment 132, when the prefabricated floor 2 is connected with the PEC column 1, the prefabricated floor 2 is partially misaligned with the PEC column 1, and then moved in the direction close to the stirrup 13, so that the second connecting portion 23 can hook the opposite stirrup 13, and the positioning of the prefabricated floor 2 and the PEC column 1 is quickly realized.

[0027] The floor body 21 comprises a beam body 24 formed by pouring concrete, a plurality of connecting bar assemblies 25 arranged at intervals in the beam body 24, and a plurality of positioning bars 26 arranged perpendicularly to the plurality of connecting bar assemblies 25 in the beam body 24, and specifically, the beam body 24 is supported on the top of the upper connecting plate 11, the connecting bar assembly 25 comprises a first connecting bar 251 and a second connecting bar 252 arranged at intervals in the beam body 24, and a plurality of fixing bars 253 arranged at intervals between the first connecting bar 251 and the second connecting bar 252 in the beam body 24, wherein the plurality of fixing bars 253 correspond one-to-one to the plurality of positioning bars 26, the positioning bar 26 connects a plurality of fixing bars 253 of the plurality of connecting bar assemblies 25 located on the same horizontal line, and through the connection of the positioning bar 26 and the opposite fixing bar 253, the plurality of connecting bar assemblies 25 and the plurality of positioning bars 26 form a network structure, thereby ensuring the overall strength of the prefabricated floor 2.

[0028] During assembly, a support frame is arranged on the two sides of the PEC column 1 respectively, the prefabricated floor 2 is hoisted to the designated installation position by the mechanical arm, the prefabricated floor 2 is partially misaligned with the PEC column 1, and then moved in the direction close to the stirrup 13, so that the plurality of second connecting portions 23 hook the opposite stirrups 13, thereby realizing the pre-positioning of the prefabricated floor 2 and the PEC column 1, at this time, the connecting segment 222 of the first connecting portion 22 is attached to the side edge of the shear connecting bar 3; the above operation is repeated to hoist and pre-position another prefabricated floor on the other side of the PEC column 1, and then the shear connecting bar 3 and the two connecting segments 222 on the two sides thereof are fixed by the steel wire 5, and finally the area between the two ends of the prefabricated floor 2 and the PEC column 1 is filled with concrete to form the cast-in-place concrete layer 4.

[0029] The application defines the structure of the connecting node, defines the structure of the end of the prefabricated floor 2, connects the first connecting part 22 with the shear connecting rib 3 arranged at the top of the PEC column 1, and connects the second connecting part 23 with the upward extending stirrup 13 in the PEC column 1, so as to realize the quick connection of the PEC column 1 and the two prefabricated floors 2, and also improve the strength of the connection of the two prefabricated floors 2 and the PEC column 1; the overall structure is simple, convenient to install and clear in force transmission, and is not prone to cracking, thereby ensuring the use in the transformer substation.

[0030] The above is only a preferred embodiment of the present application, and therefore cannot limit the scope of the present application, that is, equivalent changes and modifications made according to the patent application range and content of the specification should still be within the scope of the present application.

Claims

1. A precast floor slab to PEC column connection node, characterized in that: The PEC column, the two prefabricated floors oppositely arranged on the top of the PEC column, the multiple shear connecting bars arranged at intervals on the top surface of the PEC column, and the cast-in-place concrete layer poured between the two prefabricated floors and the top surface of the PEC column, The PEC column, including the upper and lower connection plates oppositely arranged, the multiple stirrup assemblies arranged at intervals between the upper and lower connection plates, and the precast concrete layer poured between the upper and lower connection plates, the stirrup assembly including the two stirrups oppositely arranged left and right, the stirrups extending upwards above the upper connection plate and connecting with the same side prefabricated floor; The prefabricated floor, including the floor body, the multiple first connecting parts formed at the ends of the floor body and connected with the multiple shear connecting bars respectively, and the multiple second connecting parts formed at the ends of the floor body and connected with the multiple stirrups on the same side respectively.

2. The prefabricated floor and PEC column connecting node according to claim 1, characterized in that: The floor body includes the beam body poured by concrete and the multiple connecting bar assemblies arranged at intervals in the beam body, the connecting bar assembly including the first connecting bar and the second connecting bar arranged at intervals up and down in the beam body, the beam body supported on the top of the upper connection plate, the first connecting bar with one end in the beam body and the other end extending outward to form the first connecting part outside the beam body, and the second connecting bar with one end in the beam body and the other end extending outward to form the second connecting part outside the beam body.

3. The prefabricated floor and PEC column connecting node according to claim 2, characterized in that: The connecting bar assembly further includes the multiple fixing bars arranged at intervals in the beam body between the first connecting bar and the second connecting bar, and the floor body further includes the multiple positioning bars arranged perpendicularly to the multiple connecting bar assemblies in the beam body, the multiple fixing bars corresponding to the multiple positioning bars one by one, and the positioning bar connecting the multiple fixing bars on the same horizontal line of the multiple connecting bar assemblies.

4. The prefabricated floor and PEC column connecting node according to claim 1, characterized in that: The stirrup includes the lower horizontal segment supported on the lower connection plate, the vertical segment connected with the lower horizontal segment and extending upwards out of the upper connection plate, and the upper horizontal segment connected perpendicularly to the vertical segment and located on the top of the upper connection plate.

5. The precast floor slab to PEC column connection node of claim 4, wherein: The first connecting part includes the extension segment supported on the upper horizontal segment and the connecting segment arranged perpendicularly to the extension segment and adhering to the side edge of the shear connecting bar.

6. The precast floor slab to PEC column connection node of claim 5, wherein: The shear connecting bar and the connecting segments of the two first connecting parts on the left and right sides are fixed by steel wire binding.

7. The precast floor slab to PEC column connection node according to claim 4, wherein: The second connecting part is in the shape of a hook and connected to the opposite vertical segment.

8. The precast floor slab to PEC column connection node according to claim 1, wherein: The PEC column further includes the multiple reinforcing bars arranged at intervals in the vertical direction between the upper connection plate and the connection plate, and the reinforcing bars are connected between the multiple stirrups arranged on the same side.

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