Splicing joint of composite floor slab for transformer substation and composite floor slab thereof

Abstract

The composite floor slab comprises a bottom plate and a plurality of truss assemblies arranged on the bottom plate at intervals, and each truss assembly comprises a truss and a plurality of installation seats which are arranged on the bottom plate in the extending direction of the truss at intervals and used for installing the truss. The truss comprises a top rib, two bottom ribs and two supporting ribs, wherein the top rib and the two bottom ribs are distributed triangularly, and the two supporting ribs are arranged on the two sides of the top rib respectively and connected with the opposite bottom ribs. The mounting seat comprises a mounting seat body arranged on the bottom plate, and a plurality of first positioning grooves and a plurality of second positioning grooves which are formed in the top of the mounting seat body; the two bottom ribs can be respectively fixed in one of the first positioning grooves and one of the second positioning grooves so as to adjust an included angle between the two supporting ribs; the truss is positioned through arrangement of the mounting base, concrete does not need to be poured in advance, and after the truss is connected with the stand column, concrete is poured together, so that the problem that new condensation and old condensation are prone to cracking can be solved, and the connecting strength of the splicing joint is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to substation assembly building technical field, concretely relates to a splicing joint of composite floor for substation and its composite floor. BACKGROUND

[0002] The modular construction of substation has become the mainstream of the design of infrastructure projects, and the unified design depth and construction standard improve the construction efficiency and reduce the construction cost. The prefabricated reinforced concrete floor is a floor prefabricated in a factory or on site, and then hoisted to the house by manual or mechanical lifting and formed by grouting and caulking. The prefabricated reinforced concrete composite floor is the most commonly used component at present. When the composite floor is connected with the beam column in the substation, the prepared composite floor is spliced with the beam column, and then the concrete is poured. Although the integrity is good after pouring, the connection strength at the splicing position is not enough, which can easily affect the later use. And when different composite floors correspond to different room functions, a large number of cable pipelines need to be laid, which can cause the standard height of the composite floor to be inconsistent, that is, the thickness after pouring the concrete is inconsistent, and the height of the prefabricated steel pipe truss is fixed and cannot match the composite floor with different standard heights, which needs to be improved urgently. SUMMARY

[0003] The utility model aims at overcoming the shortcomings of prior art, and provides a splicing joint of composite floor for substation and its composite floor.

[0004] The utility model adopts the following technical scheme:

[0005] A composite floor for a substation, comprising a bottom plate and a plurality of truss assemblies spaced apart on the bottom plate, the truss assembly comprising a truss and a plurality of mounting seats spaced apart on the bottom plate along the extension direction of the truss for mounting the truss, the truss comprising a top bar in a triangular distribution and two bottom bars, and two support bars respectively arranged on both sides of the top bar and connected with the opposite bottom bars; the mounting seat comprises a mounting seat body arranged on the bottom plate and a plurality of first positioning grooves and a plurality of second positioning grooves arranged on the top of the mounting seat body, and the two bottom bars can be respectively fixed in one first positioning groove and one second positioning groove to adjust the included angle between the two support bars.

[0006] Preferably, the mounting seat body comprises a support section supported on the bottom plate and two positioning sections arranged opposite to the two sides of the upper end of the support section and extending outward, and a plurality of first positioning grooves and a plurality of second positioning grooves are arranged on the positioning sections.

[0007] Preferably, the support bar is arranged in a wave shape between the top bar and the opposite bottom bar.

[0008] The utility model provides a splicing joint of composite floor for transformer substation, including stand, first composite floor and second composite floor which are oppositely arranged on both sides of stand and cast-in-situ concrete layer which is poured between stand, first composite floor and second composite floor, first composite floor and second composite floor adopt the composite floor of any one of the above, the height of first composite floor is higher than the height of second composite floor, and the upper end surface of cast-in-situ concrete layer is arranged in step shape.

[0009] Preferably, the stand comprises a splicing beam arranged in an I-shaped manner and a mounting plate arranged in the splicing beam, the splicing beam comprises upper and lower beam plates arranged oppositely and a connecting plate arranged between the upper and lower beam plates, the mounting plate is located between the upper and lower beam plates and connected to one side of the connecting plate, the first composite floor is connected to the upper end of the upper beam plate, the second composite floor is connected to the upper end of the mounting plate, and the cast-in-situ concrete layer is poured to extend between the upper beam plate and the mounting plate.

[0010] Preferably, a plurality of first reinforcing bars are further connected between the first composite floor and the second composite floor, one end of the first reinforcing bar is connected to the bottom plate of the first composite floor, and the other end extends to be connected to the bottom plate of the second composite floor, and the plurality of first reinforcing bars are alternately arranged with a plurality of truss assemblies of the first composite floor.

[0011] Preferably, a plurality of first connecting bars for connecting the plurality of first reinforcing bars are further included, and the extension direction of the first connecting bar is perpendicular to the extension direction of the first reinforcing bar.

[0012] Preferably, the first reinforcing bar is arranged above the truss assembly of the first composite floor.

[0013] Preferably, a plurality of shear connecting bars are further arranged at intervals at the top of the stand, and the plurality of shear connecting bars are alternately arranged with the plurality of first reinforcing bars.

[0014] Preferably, a plurality of second reinforcing bars and a plurality of second connecting bars are further included, one end of the plurality of second reinforcing bars is connected to the bottom plate of the second composite floor, and the other end extends above the stand, the plurality of second connecting bars are arranged perpendicularly to the plurality of second reinforcing bars, the second connecting bar is connected between the plurality of second reinforcing bars, and the plurality of shear connecting bars are alternately arranged with the plurality of second reinforcing bars.

[0015] From the above description of the utility model, compared with the prior art, the utility model has the beneficial effects that: the application limits the composition of the truss assembly, positions the truss through the setting of the mounting seat, does not need to precast concrete, pours the concrete after connecting with the stand column, can greatly reduce the problem of easy cracking between the new and old condensations, and alternately sets the first reinforcing bar, the first connecting bar, the second reinforcing bar, the second connecting bar and the shear connecting bar between the first composite floor slab, the second composite floor slab and the stand column, so as to improve the strength of the splicing joint and ensure the installation and use of the power substation after assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a partial structure schematic view of the splicing joint.

[0017] Fig. 2 It is a partial structure schematic view of the splicing joint.

[0018] Fig. 3 It is a partial structure schematic view of the first composite floor slab.

[0019] Fig. 4 It is a structure schematic view of the mounting seat.

[0020] In the drawing, 1 is a stand column, 2 is a first composite floor slab, 3 is a second composite floor slab, 4 is a cast-in-place concrete layer, 5 is a first reinforcing bar, 6 is a first connecting bar, 7 is a shear connecting bar, 8 is a second reinforcing bar, 9 is a second connecting bar, 11 is a splicing beam, 12 is a mounting plate, 13 is an upper beam plate, 14 is a lower beam plate, 15 is a connecting plate, 16 is a precast concrete layer, 21 is a bottom plate, 22 is a truss assembly, 23 is a truss, 231 is a top bar, 232 is a bottom bar, 233 is a support bar, 24 is a mounting seat, 241 is a mounting seat body, 242 is a first positioning groove, 243 is a second positioning groove, 244 is a support section, 245 is a positioning section, 51 is a main body section, and 52 is a connecting section. DETAILED DESCRIPTION

[0021] The utility model is further described below through specific embodiments.

[0022] REFERENCE Figs. 1 to 4As shown, a splicing joint of a composite floor slab for a transformer substation comprises a stand column 1, a first composite floor slab 2 and a second composite floor slab 3 oppositely arranged on both sides of the stand column 1, a cast-in-situ concrete layer 4 cast between the stand column 1, the first composite floor slab 2 and the second composite floor slab 3, a plurality of first reinforcing bars 5 connected between the first composite floor slab 2 and the second composite floor slab 3, a plurality of first connecting bars 6 arranged at intervals for connecting the plurality of first reinforcing bars 5, a plurality of shear connecting bars 7 arranged at intervals on the top of the stand column 1, a plurality of second reinforcing bars 8 having one end connected with the second composite floor slab 2 and the other end extending between the two shear connecting bars 7, and a plurality of second connecting bars 9 arranged at intervals for connecting the plurality of second reinforcing bars 8, wherein the first composite floor slab 2 and the second composite floor slab 3 have the same structure, except that the height of the first composite floor slab 2 is higher than the height of the second composite floor slab 3, and the installation position of the first composite floor slab 2 is higher than the installation position of the second composite floor slab 3; specifically, the upper end surface of the cast-in-situ concrete layer 4 is arranged in a stepped manner, so that the top surface of the cast second composite floor slab 3 is lower than the top surface of the cast first composite floor slab 2, facilitating the laying of cable pipelines on the top surface of the cast second composite floor slab 3.

[0023] The stand column 1 comprises a splicing beam 11 arranged in an I-shaped manner and a mounting plate 12 arranged in the splicing beam 11, the splicing beam 11 comprises an upper beam plate 13 and a lower beam plate 14 oppositely arranged, a connecting plate 15 arranged between the upper beam plate 13 and the lower beam plate 14, and a pre-cast concrete layer 16 cast between the upper beam plate 13 and the lower beam plate 14, wherein the mounting plate 12 is arranged between the upper beam plate 13 and the lower beam plate 14, one end of the mounting plate 12 is connected with the side edge of the connecting plate 15, and the other end of the mounting plate 12 extends outward; the pre-cast concrete layer 16 is cast between the upper beam plate 13 and the lower beam plate 14 on one side of the connecting plate 15 and between the lower beam plate 14 and the mounting plate 12 on the other side of the connecting plate 15; during splicing, the first composite floor slab 2 is connected with the upper end of the upper beam plate 13, the second composite floor slab 3 is connected with the upper end of the mounting plate 12, and the cast-in-situ concrete layer 4 is cast to extend between the upper beam plate 13 and the mounting plate 12, thereby increasing the connection area of the stand column 1 and the second composite floor slab 3 and improving the connection strength of the splicing joint.

[0024] The first composite floor slab 2 comprises a bottom plate 21 and a plurality of truss assemblies 22 arranged at intervals on the bottom plate 21, the truss assembly 22 comprises a truss 23 and a plurality of mounting seats 24 arranged at intervals on the bottom plate 21 in the extension direction of the truss 23 for mounting the truss 23; specifically, the truss 23 comprises a top bar 231 and two bottom bars 232 arranged in a triangular distribution, and a plurality of support bars 233 arranged at intervals on the top bar 231 and connected with the opposite bottom bar 232; further, the support bar 233 is arranged in a wave shape between the top bar 231 and the opposite bottom bar 232; wherein the structure of the second composite floor slab 3 is the same as that of the first composite floor slab 2, and the specific structure of the second composite floor slab 3 will not be described further.

[0025] The mounting seat 24 comprises a mounting seat body 241 arranged on the bottom plate 21 and a plurality of first positioning grooves 242 and a plurality of second positioning grooves 243 arranged on the top of the mounting seat body 241, wherein the two bottom ribs 232 are respectively fixed in one of the first positioning grooves 242 and one of the second positioning grooves 243 to adjust the included angle between the two supporting ribs 233, thereby adjusting the height of the truss 23, so that it can be applied to composite floors with different thicknesses; specifically, the mounting seat body 241 comprises a supporting section 244 supported on the bottom plate 21 and two positioning sections 245 arranged on the two sides of the upper end of the supporting section 244 and extending outward, and the plurality of first positioning grooves 242 and the plurality of second positioning grooves 243 are symmetrically arranged on the positioning sections 245; when the truss assembly 22 is prepared, the plurality of mounting seats 24 are arranged on the bottom plate 21 at intervals, according to the thickness requirement of the composite floor, the two bottom ribs 232 are inserted into the corresponding first positioning grooves 242 and second positioning grooves 243, and then the two supporting ribs 233 are welded with the corresponding bottom rib 232 and top rib 231 to form the truss 23 on the plurality of mounting seats 24; after the truss 23 is welded, the two mounting seats 24 located at the head and tail can be fixed on the bottom plate 21 by bolts, so that the truss assembly 22 is fixed on the bottom plate 21, facilitating the subsequent movement of the composite floor and the splicing of the column 1.

[0026] The first reinforcing rib 5 is connected at one end with the bottom plate 21 of the first composite floor 2 and extended at the other end to be connected with the bottom plate of the second composite floor 3, comprising a main body section 51 located above the bottom plate 21 and two connecting sections 52 arranged on the two sides of the main body section 51, the two connecting sections 52 are respectively arranged perpendicularly at the two ends of the main body section 51 and connected with the bottom plate of the opposite first composite floor 2 or second composite floor 3, wherein the main body section 51 is arranged above the truss assembly 22 of the first composite floor 2 to ensure the overall strength of the first composite floor 2 after pouring concrete; specifically, a plurality of first reinforcing ribs 5 and a plurality of truss assemblies 22 of the first composite floor 2 are arranged alternately on the bottom plate 21 at intervals; further, the extension direction of the first connecting rib 6 is perpendicular to the extension direction of the first reinforcing rib 5 to position the plurality of first reinforcing ribs 5; during splicing, in order to ensure the stability of the plurality of first reinforcing ribs 5 on the bottom plate 21, the bottom of several first reinforcing ribs 5 can be welded with the bottom plate 21, thereby ensuring that the mesh structure composed of the plurality of first reinforcing ribs 5 and the first connecting rib 6 is stably supported on the bottom plate 21.

[0027] The second reinforcing rib 8 is connected with the bottom plate of the second composite floor 3 at one end and is bent upwards to extend above the column 1 at the other end, wherein the plurality of shear connecting ribs 7 and the plurality of second reinforcing ribs 8 are arranged alternately, and the plurality of second reinforcing ribs 8 and the plurality of truss assemblies of the second composite floor 3 are arranged alternately on the bottom plate; specifically, the plurality of second connecting ribs 9 are arranged vertically to the plurality of second reinforcing ribs 8, and the second connecting rib 9 is connected between the plurality of second reinforcing ribs 8 to position the plurality of second reinforcing ribs 8; when splicing, in order to ensure the stability of the plurality of second reinforcing ribs 8 on the bottom plate, the bottom of several second reinforcing ribs 8 can be welded with the bottom plate, so as to ensure that the mesh structure composed of the plurality of second reinforcing ribs 8 and the second connecting rib 9 is stably supported on the bottom plate; through the arrangement of the first reinforcing rib 5, the first connecting rib 6, the second reinforcing rib 8, the second connecting rib 9 and the shear connecting rib 7, the strength of the splicing joint is improved, and the safe use of the power substation after assembly is ensured.

[0028] At present, after the preparation of the composite floor and the fixing of the truss, a layer of concrete is poured in advance for fixing the truss, and then a certain thickness of new concrete is poured on the old concrete when splicing with the column to realize the connection with the column, but in the above-mentioned manner, the construction cold front is easy to occur between the new and old concrete, and the risk of cracking in the later period is easy to occur; therefore, the composition of the truss assembly 22 is redefined, the truss 23 is positioned through the arrangement of the mounting seat 24, the pouring of the concrete in advance is not required, and the concrete is poured together after being connected with the column 1, so that the problem of easy cracking between the new and old concrete is greatly reduced; in addition, the first reinforcing rib 5, the first connecting rib 6, the second reinforcing rib 8, the second connecting rib 9 and the shear connecting rib 7 are arranged alternately between the first composite floor 2, the second composite floor 3 and the column 1, so as to improve the strength of the splicing joint and ensure the installation and use of the power substation after assembly.

[0029] 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 the content of the specification should still be within the scope of the present application.

Claims

1. A composite floor slab for use in substations, characterized in that: The system includes a base plate and multiple truss assemblies spaced apart on the base plate. Each truss assembly includes a truss and multiple mounting seats spaced apart on the base plate along the truss's extension direction for mounting the truss. The truss includes a top rib and two bottom ribs arranged in a triangular pattern, and two supporting ribs respectively located on both sides of the top rib and connected to the opposite bottom rib. Each mounting seat includes a mounting body located on the base plate and multiple first positioning grooves and multiple second positioning grooves located on the top of the mounting body. Two bottom ribs can be fixed in one of the first positioning grooves and one of the second positioning grooves respectively to adjust the included angle between the two supporting ribs.

2. A composite floor slab according to claim 1, characterized in that: The mounting base includes a support section supported on a base plate and two positioning sections that extend outward from the upper ends of the support section. A plurality of first positioning grooves and a plurality of second positioning grooves are spaced apart on the positioning sections.

3. A composite floor slab according to claim 1, characterized in that: The supporting ribs are arranged in a wave-like pattern between the top ribs and the corresponding bottom ribs.

4. A splicing node for composite floor slabs in a substation, characterized in that: It includes columns, a first composite floor slab and a second composite floor slab arranged opposite each other on both sides of the columns, and a cast-in-place concrete layer poured between the columns, the first composite floor slab and the second composite floor slab. The first composite floor slab and the second composite floor slab are composite floor slabs as described in any one of claims 1 to 3. The height of the first composite floor slab is higher than the height of the second composite floor slab. The upper surface of the cast-in-place concrete layer is stepped.

5. The splicing node of a composite floor slab for a substation according to claim 4, characterized in that: The column includes an I-shaped splicing beam and an installation plate disposed in the splicing beam. The splicing beam includes an upper beam plate and a lower beam plate arranged opposite each other and a connecting plate disposed between the upper beam plate and the lower beam plate. The installation plate is located between the upper beam plate and the lower beam plate, and one end is connected to the side of the connecting plate. The first composite floor slab is connected to the upper end of the upper beam plate, and the second composite floor slab is connected to the upper end of the installation plate. The cast-in-place concrete layer extends to the space between the upper beam plate and the installation plate.

6. The splicing node of a composite floor slab for a substation according to claim 4, characterized in that: It also includes a plurality of first reinforcing ribs connecting the first composite floor slab and the second composite floor slab, one end of the first reinforcing rib being connected to the bottom plate of the first composite floor slab, and the other end extending to be connected to the bottom plate of the second composite floor slab; the plurality of first reinforcing ribs and the plurality of truss components of the first composite floor slab are alternately arranged at intervals.

7. The splicing node of a composite floor slab for a substation according to claim 6, characterized in that: It also includes a plurality of first connecting ribs for connecting the plurality of first reinforcing ribs, wherein the extension direction of the first connecting ribs is perpendicular to the extension direction of the first reinforcing ribs.

8. The splicing node of a composite floor slab for a substation according to claim 7, characterized in that: The first reinforcing rib is positioned above the truss assembly of the first composite floor slab.

9. The splicing node of a composite floor slab for a substation according to claim 6, characterized in that: It also includes a plurality of shear connecting bars spaced apart at the top of the column, wherein the plurality of shear connecting bars and a plurality of first reinforcing bars are alternately arranged.

10. A splicing node for composite floor slabs in a substation according to claim 9, characterized in that: It also includes multiple second reinforcing bars and multiple second connecting bars. One end of the multiple second reinforcing bars is connected to the bottom plate of the second composite floor slab, and the other end extends to the top of the column. The multiple second connecting bars are arranged perpendicular to the multiple second reinforcing bars and are connected between the multiple second reinforcing bars. Multiple shear-resistant connecting bars and multiple second reinforcing bars are alternately arranged at intervals.

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