Non-rib-out laminated slab bottom plate based on inclined groove formed in slab edge

Abstract

The utility model discloses a rib-out-free laminated slab bottom plate based on slant grooves formed in the slab edge, which comprises a laminated slab bottom plate body (1), one or more slant grooves (2) are formed in the slab edge of the joint of the laminated slab bottom plate body (1) and a beam, and side edge steel bars (3) penetrating through the slant grooves (2) are arranged in the slant grooves (2); the structure further comprises inclined inserting ribs (4) which are inserted into the inclined grooves (2) and located below the side steel bars (3). The utility model has the characteristics of quick and convenient production and manufacture, and can ensure the structural strength.

Description

TECHNICAL FIELD

[0001] The utility model relates to a laminated slab bottom plate, in particular to a non-bar laminated slab bottom plate based on setting oblique grooves on the plate edge. BACKGROUND

[0002] At present, the prefabricated application of horizontal components is the most widely used laminated slab, and the laminated slab is a fabricated monolithic slab composed of laminated slab bottom plate and cast-in-place reinforced concrete. According to the current specification "Technical Specification for Fabricated Structures" (JGJ1-2014) article 6.6.4, the longitudinal stress steel bars at the end of the laminated slab bottom plate should be stretched out from the end of the plate and anchored in the post-cast concrete of the supporting beam or wall, and the anchoring length should not be less than 5d (d is the diameter of the longitudinal stress steel bar), and it is appropriate to stretch over the support center line, so that this longitudinal stress steel bar needs to be stretched out from the laminated slab bottom plate, like a beard, commonly known as "beard" bar.

[0003] In order to solve the problem that the "beard" bar is damaged and the corner is missing due to bending and deformation in the process of manufacturing, transporting and hoisting of the laminated slab bottom plate, and the "beard bar" and the upper longitudinal bar of the laminated slab supporting beam are cross-shaped, causing installation trouble; in the patent with the patent number "CN110080456B" and the patent name "Laminated slab bottom plate connected by end insertion and construction process thereof", a technical scheme of "including laminated slab bottom plate body, a group of sleeves are pre-buried at the end of the laminated slab bottom plate body, and each sleeve is inclinedly arranged; the sleeve is provided with an insertion bar, and the bottom end of the insertion bar is located outside the sleeve." is disclosed to solve the above problems. However, by pre-buried sleeve in the laminated slab bottom plate, on the one hand, the production and manufacturing are more troublesome, on the other hand, the concrete in the sleeve cannot be guaranteed to be filled densely, thereby affecting the overall structural strength. Therefore, the existing technology has the problems of more troublesome production and manufacturing and easy to affect the overall structural strength. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a non-bar laminated slab bottom plate based on setting oblique grooves on the plate edge. The utility model has the characteristics of fast and convenient production and manufacturing and can guarantee the structural strength.

[0005] The technical scheme of the utility model: the non-bar laminated slab bottom plate based on setting oblique grooves on the plate edge, including laminated slab bottom plate body, the plate edge of the laminated slab bottom plate body at the beam connection place is provided with one or more oblique grooves, the oblique groove is provided with side edge steel bars penetrating the oblique groove; further including oblique insertion bar, the oblique insertion bar is inserted into the oblique groove and is located below the side edge steel bar.

[0006] The side edge steel bars are arranged along the plate edge and penetrate all the oblique grooves.

[0007] The oblique groove comprises an inclined surface on the plate edge of the composite floor bottom plate body, and vertical end surfaces are arranged on both sides of the inclined surface.

[0008] The oblique angle between the inclined surface and the horizontal plane of the composite floor bottom plate body is 20-60 degrees.

[0009] The oblique angle between the inclined surface and the horizontal plane of the composite floor bottom plate body is 30 degrees.

[0010] The oblique steel bar comprises a horizontal steel bar section and an oblique steel bar section.

[0011] The side edge steel bar and the oblique steel bar are vertically arranged.

[0012] The composite floor bottom plate further comprises a truss steel bar and / or a wire box on the composite floor bottom plate body.

[0013] Compared with the prior art, the oblique groove is arranged on the plate edge at the connection between the composite floor bottom plate body and the beam, one side edge steel bar penetrates the middle of the oblique groove, the oblique groove is fixed with the oblique steel bar, the production and manufacturing are fast and convenient, the opening of the oblique groove is relatively large, the concrete filling in the oblique groove is ensured to be dense when the cast-in-place concrete is poured, the side edge steel bar and the oblique steel bar are vertically arranged, the composite floor bottom plate, the cast-in-place concrete beam and the cast-in-place part of the floor are firmly connected together, and the structural strength is effectively improved. At the same time, the angle of the oblique groove is determined in the prefabrication factory, the angle of the oblique steel bar is consistent with that of the oblique groove, the position of the steel bar is very accurate, the positioning is simple and accurate, the steel bar is inserted into the oblique groove, and then is bound with the side edge steel bar, and the construction is very fast. In summary, the composite floor bottom plate has the characteristics of fast and convenient production and manufacturing and guaranteed structural strength. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is a sectional view between the composite floor bottom plate and the poured beam and the cast-in-place concrete of the floor;

[0016] Figure 3 is Figure 2Structural view omitting the diagonal inserts;

[0017] Figure 4 This is an assembly view of the finished groove mold with the side steel bars and foam cotton;

[0018] Figure 5 This is a cross-sectional view of the bottom plate of the composite plate without grooves.

[0019] The markings in the attached diagram are as follows: 1-Composite slab base plate body, 2-Inclined groove, 3-Side reinforcement, 4-Inclined insert reinforcement, 21-Inclined surface, 22-Vertical end face, 41-Horizontal reinforcement segment, 42-Inclined reinforcement segment, 5-Cast-in-place concrete, 6-Finished groove mold, 7-Foam cotton. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0021] Example. A non-ribbed laminated plate base with oblique grooves along the plate edges, forming as follows: Figures 1 to 5 As shown, the composite slab includes a base plate 1, and one or more inclined grooves 2 are provided on the edge of the base plate 1 at the connection with the beam. Side steel bars 3 that penetrate the inclined grooves 2 are provided in the inclined grooves 2. The composite slab also includes inclined reinforcing bars 4, which are inserted into the inclined grooves 2 and located below the side steel bars 3.

[0022] The side reinforcement 3 is set along the entire length of the plate edge and passes through all the oblique grooves 2.

[0023] The inclined groove 2 includes an inclined surface 21 located on the edge of the composite plate bottom plate body 1, and vertical end faces 22 are provided on both sides of the inclined surface 21.

[0024] The angle between the inclined surface 21 and the horizontal plane of the composite plate base body 1 is 20-60 degrees.

[0025] The angle between the inclined surface 21 and the horizontal plane of the composite plate base body 1 is 30 degrees.

[0026] The inclined reinforcing bar 4 includes a horizontal reinforcing bar segment 41 and an inclined reinforcing bar segment 42.

[0027] The side reinforcement 3 and the diagonal reinforcement 4 are arranged vertically.

[0028] Truss reinforcement and / or junction boxes can also be arranged as needed.

[0029] The manufacturing process of the unreinforced laminated slab bottom plate with oblique grooves on the edge is as follows:

[0030] 1) Arrange the side molds of the composite plate base plate on the bottom mold platform according to the design drawings. No grooves or holes need to be made on the side molds.

[0031] 2) Arrange the bottom reinforcement bars of the composite slab, turning them upwards near the edge formwork to create a structure without reinforcement bars; for example... Figure 5 As shown.

[0032] 3) Arrange the side reinforcement bars, precisely control the distance between the side reinforcement bars and the bottom formwork platform, and tie the side reinforcement bars to the upper section of the bottom reinforcement bars; such as Figure 5 As shown.

[0033] 4) Arrange the truss reinforcement and the pre-embedded junction boxes for water and electricity;

[0034] 5) At the location where an angled groove is required, place the finished groove mold 6 (structure as follows) Figure 4 (As shown) Slide it onto the side steel bar, and stuff the bottom of the side steel bar with foam cotton 7;

[0035] 6) Pour the foundation slab concrete;

[0036] 7) Remove the side molds and finished groove molds. Production is complete once the concrete has cured to the required standard.

[0037] The on-site construction process for composite slabs with beveled grooves along the edges is as follows:

[0038] (1) The composite board with oblique grooves on the edge is transported to the construction site after it is manufactured in the factory;

[0039] (2) Use the tower crane or truck crane on site to hoist the composite slab bottom plate with the inclined groove on the edge to the working floor and position it accurately according to the design drawings;

[0040] (3) Arrange and tie the reinforcing bars of the beams around the composite slab, including longitudinal bars, stirrups and web bars, etc.; (Steps 2 and 3 can be reversed or performed alternately)

[0041] (4) Insert the inclined reinforcing bars into the inclined groove and tie the inclined reinforcing bars and the side reinforcing bars in the groove together;

[0042] (5) Arrange and tie the reinforcing bars on the overlapping upper surface;

[0043] (6) Casting the cast-in-place concrete for beams and floor slabs 5; Once the concrete strength meets the requirements, the construction of the composite slab with inclined grooves on the slab edge is completed.

[0044] The opening of the slanted groove is relatively large, which ensures that the concrete inside the groove is densely filled during the pouring of cast-in-place concrete.

[0045] Slanted grooves are relatively easy and quick to make, and pre-made groove molds can be used:

[0046] The finished groove mold is fitted onto the side steel bars, and foam cotton filler is stuffed under the side steel bars.

[0047] Positioning is achieved using a pre-made groove mold, and the angle of inclination at the bottom of the groove is controlled very precisely.

[0048] The side reinforcement and diagonal dowel bars are arranged vertically, firmly connecting the composite slab bottom plate, the cast-in-place concrete beams and the cast-in-place part of the floor slab together.

[0049] The angle of the sloping groove is determined at the prefabrication plant, and the angle of the sloping reinforcing bar is consistent with the sloping groove. The position of the reinforcing bar is very precise, and the positioning is simple and accurate. After the reinforcing bar is inserted into the sloping groove, it can be tied to the side reinforcing bars, making construction very quick.

[0050] The side molds of the composite plate base plate do not need to be slotted, which improves the versatility and turnover rate of the molds.

Claims

1. A non-ribbed composite plate bottom plate with oblique grooves on the plate edge, characterized in that: The composite slab includes a bottom plate body (1), which has one or more inclined grooves (2) at the edge of the plate where it connects with the beam. The inclined grooves (2) are provided with side steel bars (3) that penetrate the inclined grooves (2). The composite slab also includes inclined reinforcing bars (4), which are inserted into the inclined grooves (2) and located below the side steel bars (3).

2. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 1, characterized in that: The side reinforcement (3) is set along the entire length of the plate edge and passes through all the oblique grooves (2).

3. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 1, characterized in that: The inclined groove (2) includes an inclined surface (21) located on the edge of the bottom plate body (1) of the composite plate, and vertical end faces (22) are provided on both sides of the inclined surface (21).

4. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 3, characterized in that: The angle between the inclined surface (21) and the horizontal plane of the composite plate base plate body (1) is 20-60 degrees.

5. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 4, characterized in that: The angle between the inclined plane (21) and the horizontal plane of the composite plate base plate body (1) is 30 degrees.

6. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 1, characterized in that: The inclined reinforcing bar (4) includes a horizontal reinforcing bar segment (41) and an inclined reinforcing bar segment (42).

7. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 1, characterized in that: The side reinforcement (3) and the diagonal reinforcement (4) are arranged vertically.

8. The non-ribbed composite plate bottom plate based on the oblique groove on the plate edge according to claim 1, characterized in that: It also includes truss reinforcement and / or junction boxes located on the composite slab base plate body (1).

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