CN107542212A - A prefabricated perforated plate capable of integral connection and its connection method - Google Patents

Abstract

The invention provides a prefabricated porous plate which has large span, good integrity and economy and can be integrally connected, comprising a prefabricated porous plate, wherein longitudinal steel bars are pre-embedded in the prefabricated porous plate in the same direction as the extending direction of a hole, and transverse steel bars are pre-embedded in the prefabricated porous plate in the direction vertical to the extending direction of the hole. At least, be equipped with longitudinal reinforcement in the below of prefabricated perforated plate upper aperture, the horizontal reinforcing bar of prefabricated perforated plate tip extend to the side and set up, form the link that is used for connecting adjacent prefabricated perforated plate, roof beam or wall, two adjacent prefabricated perforated plates between connect fixedly through additional reinforcing bar and concrete post-cast strip. The prefabricated porous plate capable of being integrally connected has the advantages of good integrity in a plane, light dead weight, large span, high bearing capacity, higher economy and the like by adopting a prestress scheme through a post-pouring belt (a plate surface overlapping layer is arranged as required).

Description

A prefabricated perforated plate capable of integral connection and its connection method

technical field

The invention belongs to the technical field of construction engineering, and in particular relates to a prefabricated perforated plate which can be integrally connected and a connecting method thereof.

Background technique

Prefabricated buildings meet the requirements of building industrialization and green environmental protection, especially the industrial policy of green buildings and building industrialization in my country, and the demand for prefabricated buildings is increasing.

The floors of the main components of the existing buildings mainly include reinforced concrete prefabricated laminated floors and prestressed SP slabs. Among them, the precast concrete laminated floors have the disadvantages of small span and high cost. Poor relative cost is higher.

Contents of the invention

The object of the present invention is to provide a prefabricated perforated plate with large span, high bearing capacity, good integrity and economy, which can be integrally connected and its connection method.

The present invention is achieved through the following technical solutions:

A prefabricated perforated plate that can be integrally connected, comprising a prefabricated perforated plate, longitudinal steel bars are pre-embedded in the prefabricated perforated plate in the same direction as the extending direction of the holes, and pre-embedded in the direction perpendicular to the extending direction of the holes in the prefabricated perforated plate. Horizontal reinforcement.

Longitudinal steel bars are arranged at least below the holes on the prefabricated perforated plate, and the transverse steel bars at the end of the prefabricated perforated plate are extended to the side to form a connection end for connecting adjacent prefabricated perforated plates, beams or walls. Two adjacent prefabricated perforated panels are connected and fixed by additional steel bars and post-cast concrete strips. The main function of the upper longitudinal reinforcement is to reduce the arching of the prestressed slab and strengthen the integrity of the floor plane, and the main function of the transverse reinforcement is to form the outside of the plane and simultaneously strengthen the integrity of the floor plane.

A longitudinal additional steel bar is overlapped at the connecting ends of two adjacent prefabricated porous plates, and the two ends of the longitudinal additional steel bars are respectively connected to the connecting ends at the two ends of each prefabricated porous plate.

Above the connected prefabricated perforated slab, there is a superimposed layer of cast-in-place concrete on the slab surface, in which the transverse slab reinforcement and longitudinal slab reinforcement are pre-embedded.

The side of the prefabricated perforated plate is provided with an inwardly recessed concave part, and the function of the concave edge, notch or groove along the length of the plate is to increase the interlocking effect after splicing when multiple plates are spliced together.

The transverse reinforcement is a closed rectangle or an open rectangle or two separate U-shaped or only set at the bottom of the prefabricated perforated plate, and the transverse reinforcement can be steel wire rope, prestressed steel strand, prestressed steel rod or ordinary rebar.

A method for connecting prefabricated porous plates that can be integrally connected, the method is as follows:

The prefabricated perforated slab is connected with the prefabricated perforated slab, support beam or wall through the support concrete post-pouring belt to form a whole, the end of the transverse reinforcement of the prefabricated perforated slab extends into the concrete post-casting strip for anchoring, and the end holes of the prefabricated porous slab are provided with additional steel bars And stretched into the concrete after pouring with anchor.

When the supporting beam or wall is a steel structural beam or steel structural wall, the support concrete post-cast strip is arranged on the steel beam flange welded with shear parts or on the support welded to the steel beam web (steel plate shear wall).

The shearing parts are pegs or T-shaped steel or bent steel bars, and the supporting parts are steel plates or angle steels.

The additional transverse reinforcement of the support can be set on the top surface of the prefabricated perforated plate and the post-casting belt of the support concrete, and the longitudinal reinforcement of the support can be set in the post-casting belt of the support concrete. At this time, the additional transverse reinforcement of the support is in the In the pre-drilled groove on the top surface of the prefabricated porous plate or in the post-cast laminated layer, the longitudinal steel bars of the support are arranged in the holes on the top surface of the prefabricated porous plate or in the post-cast laminated layer.

Beneficial effects of the present invention: the present invention passes the prefabricated perforated plate through the post-casting belt (the laminated layer of the plate surface is set according to the need), which has good integrity in the plane, light weight and large span, and high bearing capacity. By adopting the prestressing scheme, it has more advantages High economy and other advantages.

Description of drawings

Fig. 1 is the structural representation of the rectangular structure of the prefabricated perforated plate transverse reinforcement;

Fig. 2 is the structural representation of the rectangular structure of the opening of the prefabricated perforated plate transverse reinforcement;

Fig. 3 is the structural schematic diagram of two separated U-shaped transverse reinforcing bars of the prefabricated perforated plate;

Fig. 4 is the structural representation that the prefabricated perforated plate transverse reinforcement is only arranged at the bottom;

Fig. 5 is the connection structure schematic diagram of two adjacent prefabricated perforated plates;

Fig. 6 is a schematic diagram of the connection structure of two adjacent prefabricated perforated plates when the transverse reinforcement is only arranged at the bottom;

Fig. 7 is the structural schematic diagram of the composite layer of cast-in-place concrete on the prefabricated perforated plate;

Fig. 8 is a structural schematic diagram of the connection between the prefabricated perforated plate and the concrete support;

Fig. 9 is a structural schematic diagram of the connection between the prefabricated perforated plate and the support of the steel structure;

Figure 10 is a schematic diagram of the connection structure between the prefabricated perforated plate and the web of the steel beam;

Fig. 11 is a structural schematic diagram of prefabricated perforated plates connected to both sides of the web of the steel beam;

Fig. 12 is a structural schematic diagram of the connection between the transverse steel bar and the concrete support using the prefabricated perforated plate arranged only below;

Fig. 13 is a structural schematic diagram of the connection of the transverse reinforcement with the support of the steel structure using the prefabricated perforated plate arranged only below;

Figure 14 is a structural schematic diagram of the connection between the transverse reinforcement and the web of the steel beam using a prefabricated perforated plate arranged only below;

Fig. 15 is a structural schematic diagram of a prefabricated perforated slab that is only arranged at the bottom to connect transverse reinforcement on both sides of the web of the steel beam;

Fig. 16 is a schematic diagram of the connection structure between the prefabricated perforated plate and the concrete support with a laminated layer;

Figure 17 is a schematic diagram of the connection structure between the prefabricated perforated plate and the steel structure support with a laminated layer;

Figure 18 is a schematic diagram of the connection structure between the prefabricated perforated plate and the web of the steel beam with a superimposed layer;

Figure 19 is a schematic diagram of the connection structure of prefabricated perforated plates with laminated layers on both sides of the steel beam web;

Fig. 20 is a schematic diagram of the connection structure between the two ends of the prefabricated perforated plate and the concrete support;

Figure 21 is a schematic diagram of the connection structure between the two ends of the prefabricated perforated plate and the steel structure support;

Figure 22 is a schematic diagram of the connection structure between the two ends of the prefabricated perforated plate and the web of the steel beam;

Fig. 23 is a schematic diagram of the connection structure where both sides of the web of the steel beam are connected to the two ends of the prefabricated perforated plate;

Figure 24 is a schematic diagram of the connection structure between the prefabricated perforated plate and the concrete support with a laminated layer;

Figure 25 is a schematic diagram of the connection structure between the two ends of the prefabricated perforated plate with a laminated layer and the steel structure support;

Fig. 26 is a schematic diagram of the connection structure between the two ends of the prefabricated perforated plate with a laminated layer and the web of the steel beam;

Figure 27 is a schematic diagram of the connection structure at both ends of the prefabricated perforated plate with laminated layers connected to both sides of the web of the steel beam;

Figure 28 is a schematic diagram of the connection structure where one side of the steel beam web is connected to the side of the prefabricated porous plate and the other side is connected to the end of the prefabricated porous plate;

Fig. 29 is a schematic diagram of the connection structure of the end of the prefabricated perforated plate connected with a superimposed layer on one side of the web of the steel beam and connected on the other side of the prefabricated perforated plate with a superimposed layer.

detailed description

The present invention will be further described below in conjunction with embodiment.

A prefabricated perforated plate that can be integrally connected as shown in Figures 1-29 includes a prefabricated perforated plate 1, and longitudinal steel bars 11 are pre-embedded in the same direction as the extending direction of the holes in the prefabricated perforated plate. Transverse reinforcement 12. Longitudinal reinforcing bars are arranged at intervals with the holes, and longitudinal reinforcing bars are arranged on the upper and lower prefabricated perforated plates of the holes 13, and the density of the upper longitudinal reinforcing bars can be slightly less than that of the bottom according to needs, and the transverse reinforcing bars at the ends of the prefabricated perforated plates Extending to the side to form a connecting end for connecting adjacent prefabricated perforated plates. A longitudinal additional steel bar 14 is provided at the connecting ends of two adjacent prefabricated perforated plates. Above the connected prefabricated perforated slabs, there is a composite layer 15 of cast-in-place concrete on the surface of the composite layer, in which a transverse reinforcement bar 151 and a longitudinal reinforcement bar 152 are pre-embedded. The side of the prefabricated perforated plate is provided with an inwardly recessed recessed portion 16, and the side recessed portion is designed for a more stable connection between two adjacent prefabricated perforated plates or between a prefabricated perforated plate and a wall. The transverse reinforcement is a closed rectangle (as shown in Figure 1) or an open rectangle (as shown in Figure 2) or two separate U-shaped (as shown in Figure 3) or only at the bottom of the prefabricated perforated plate ( As shown in Figure 4), when the prefabricated perforated plate transverse reinforcement is only arranged at the bottom, the two ends of the transverse reinforcement are bent upwards and set, and the transverse reinforcement can be steel wire rope, prestressed reinforcement or common reinforcement.

The above-mentioned method for connecting a prefabricated porous plate that can be integrally connected comprises the following steps:

Firstly, the longitudinal side of the prefabricated perforated plate is connected to the support member 3 through the support concrete post-cast belt 2 laterally to form a whole. The support member is a supporting beam or wall. The two prefabricated perforated plates are anchored by the inter-slab concrete post-casting belt, and then the upper end of the prefabricated perforated plate is laid with transverse and longitudinal plate reinforcement bars, and finally the concrete lamination layer 15 is poured.

When the supporting beam or wall is a steel structural beam or a steel structural wall, the post-cast concrete belt of the support is arranged on the flange of the steel beam welded with the shear member 21 or on the supporting part welded to the web of the steel beam (steel plate shear wall).

The shearing parts are pegs or T-shaped steel or bent steel bars, and the supporting parts are steel plates or angle steels.

As shown in Figure 12, when the transverse reinforcement of the prefabricated perforated plate is only set at the bottom, when it is connected to the support, an additional support transverse reinforcement 17 is added on the upper part, and the longitudinal reinforcement of the support is set in the area of the post-casting belt of the support concrete. 18.

As shown in Figure 15, when both sides of the support are connected with prefabricated perforated plates, an additional support transverse reinforcement 17 is connected between the two prefabricated perforated plates, and the two ends of the transverse reinforcement of the additional support respectively extend to the inside of the two prefabricated perforated plates , and the end is a bent structure.

The additional transverse reinforcement of the support can be arranged on the top surface of the prefabricated perforated plate and the post-casting belt of the support concrete, and no less than one longitudinal steel bar of the support can be arranged in the post-casting belt of the support concrete (as shown in Figure 11 ), at this time, the additional transverse reinforcement of the support needs to be cut into grooves on the top surface of the prefabricated perforated plate and poured together with concrete and the post-casting belt of the support concrete.

As shown in Figure 16-18, the transverse slab surface reinforcement of the slab cast-in-place concrete laminate layer can be bent downwards as required.

As shown in Figure 19, when prefabricated perforated plates are arranged on both sides of the support, the additional reinforcement bars on the surface of the concrete laminate on the top of the prefabricated perforated plate will connect the two as a whole.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and that described in the above-mentioned embodiments and the specification only illustrates the principles of the present invention, without departing from the spirit and scope of the present invention. Simple modifications and replacements by skilled personnel are all within the protection scope of the present invention.

Claims (10)

1. a kind of Prefabricated porous plate being connected, including Prefabricated porous plate, it is characterised in that：In Prefabricated porous plate and hole Bearing of trend identical direction be embedded with longitudinal reinforcement, the direction vertical with the bearing of trend in hole is pre-buried in Prefabricated porous plate There is transverse steel.

A kind of 2. Prefabricated porous plate being connected according to claim 1, it is characterised in that：At least in Prefabricated porous The lower section of hole is provided with longitudinal reinforcement on plate, and the transverse steel of described Prefabricated porous plate sets to extending sideways, formed and be used for The connection end of contiguous prefabricated porous plate, beam or wall is connected, by additional bar and mixed between described adjacent two Prefabricated porous plate Native post-cast strip is coagulated to be connected.

A kind of 3. Prefabricated porous plate being connected according to claim 2, it is characterised in that：It is prefabricated more adjacent two Orifice plate connection end connecting place is overlapped with longitudinal additional bar, and longitudinal additional bar both ends are connected to each Prefabricated porous plate both ends Connection end on.

A kind of 4. Prefabricated porous plate being connected according to claim 3, it is characterised in that：It is prefabricated what is connected Plate face cast-in-place concrete overlapping layers is provided with above porous plate, horizontal plate face reinforcing bar and longitudinal plate face steel are embedded with the overlapping layers Muscle.

A kind of 5. Prefabricated porous plate being connected according to claim 1, it is characterised in that：Described Prefabricated porous The side of plate is provided with the sunk part to cave inward.

A kind of 6. Prefabricated porous plate being connected according to claim 1, it is characterised in that：Described transverse steel The rectangle of rectangle or opening for closing or two separation it is U-shaped or only Prefabricated porous plate bottom set, described horizontal steel Muscle can be steel wire rope, prestress wire, prestressed steel bar or regular reinforcement.

7. a kind of Prefabricated porous plate connection method being connected, it is characterised in that method is as follows：

Prefabricated porous plate is connected integral, Prefabricated porous by bearing late poured band with Prefabricated porous plate, backbar or wall Plate transverse steel end is stretched into late poured band and anchored, and additional bar is set in the end hole of Prefabricated porous plate and is stretched into Late poured band anchors.

A kind of 8. Prefabricated porous plate connection method being connected according to claim 7, it is characterised in that：Work as supporting When beam or wall are steel structure girder or steel construction wall, bearing late poured band is arranged at the steel beam flange for being welded with shearing-resistant member or weldering It is connected on the supporting member of steel beam web plate.

A kind of 9. Prefabricated porous plate connection method being connected according to claim 8, it is characterised in that：Described Shearing-resistant member is peg or T-steel or bent-up bar, and supporting member is steel plate or angle steel.

A kind of 10. Prefabricated porous plate connection method being connected according to claim 7, it is characterised in that：Can be Prefabricated porous plate top surface is with setting bearing additional transverse steel bars and after described bearing concrete in bearing late poured band Pour and bearing longitudinal reinforcement is set with interior, now bearing additional transverse steel bars are arranged on described Prefabricated porous plate top surface and dug in advance Groove in or after pour in overlapping layers, bearing longitudinal reinforcement be arranged in described Prefabricated porous plate top surface hole or after pour overlapping In layer.