Cement-based floor support plate abutted seam connecting structure

Abstract

The utility model relates to the technical field of engineering construction, and discloses a cement-based floor support plate abutted seam connecting structure which comprises a cement-based formwork unit floor support plate, a plurality of dovetail-shaped tooth grooves are formed in the edge of the cement-based formwork unit floor support plate, and dovetail-shaped sawteeth are formed between every two adjacent dovetail-shaped tooth grooves. Steel wires extend out of the side faces of the dovetail-shaped tooth grooves and the side faces of the dovetail-shaped sawteeth, the multiple cement base formwork unit floor bearing plates are arranged in a tiled mode, the cement base formwork unit floor bearing plates on the outermost edge are laid to the edge of the cast-in-place boundary beam support, and a gap is reserved between every two adjacent cement base formwork unit floor bearing plates. Concrete slurry is integrally poured in the cast-in-place boundary beam supports, the gaps and the surfaces of the cement base formwork unit floor bearing plates, and therefore the floor slab of an integral structure is formed. According to the abutted seam connecting structure for the cement base floor support plates, reliable connection between the two cement base formwork unit floor support plates and reliable connection between the cement base formwork unit floor support plates and the cast-in-place concrete are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering construction technical field especially, it relates to a cement base floor support slab joint connecting structure. BACKGROUND

[0002] In order to facilitate on-site construction and ensure the integrity of the floor, steel bar truss floor support slab is more and more applied to the floor structure system of concrete fabricated building. At the same time, since the steel plate bottom die used by the traditional steel bar truss floor support slab cannot be painted, there are many kinds of 15mm-20mm thick cement base bottom die steel bar truss floor support slab on the market.

[0003] However, the joint between the traditional cement base floor support slab is in the form of disconnected and non-connected tight joint, and there are some prominent problems:

[0004] 1) Due to the existence of the tight joint gap between the cement base floor support slab, the gap at the joint position cannot contain the bottom steel bar of the floor above, which is easy to rust, so the cement base floor support slab cannot be used as a protective layer as part of the structure floor, and the floor support slab can only be used as a construction formwork. However, the 15mm-20mm thick cement base floor support slab increases the self-weight load of the floor, which is not conducive to the calculation of the structure index, and also increases the beam and slab reinforcement, which puts higher requirements on the structure wall column and foundation bearing capacity, and increases the engineering cost of the main building.

[0005] 2) Due to the existence of the tight joint gap between the cement base floor support slab, after the deflection deformation of the floor under the action of self-weight and upper load in the later period, the tight joint position of the floor support slab is a natural weak position, which is more prone to cracks. If the surface adopts the painting process, the original tight joint position will form a more prominent gap, which will greatly affect the appearance.

[0006] Therefore, how to solve the joint problem of the cement base floor support slab is particularly important, which will affect the popularization and application of the cement base floor support slab. INVENTION CONTENTS

[0007] The utility model aims at providing a cement base floor support slab joint connecting structure to solve the problems mentioned in the above background technology, change the traditional tight joint method, realize reliable connection and save engineering cost.

[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0009] The cement-based floor support plate joint connecting structure comprises a cement-based floor support plate unit, edges of the cement-based floor support plate unit are provided with a plurality of dovetail-shaped tooth grooves, dovetail-shaped serrations are formed between adjacent two dovetail-shaped tooth grooves, steel wires are arranged on side surfaces of the dovetail-shaped tooth grooves and the dovetail-shaped serrations, the plurality of cement-based floor support plate units are arranged in a flat manner, and edges of the cement-based floor support plate units at the most edges are arranged to edges of cast-in-place edge beam supports, gaps are left between adjacent two cement-based floor support plate units, and the surfaces of the cement-based floor support plate units are integrally poured with concrete slurry in the cast-in-place edge beam supports and the gaps, so that a whole structure floor is formed.

[0010] As an optional solution, the groove width of the dovetail-shaped tooth groove and the tooth width of the dovetail-shaped serration are both 96 mm, the groove depth of the dovetail-shaped tooth groove and the tooth height of the dovetail-shaped serration are both 40 mm, and the corner of the dovetail-shaped tooth groove and the corner of the dovetail-shaped serration are both 5 mm arc chamfers.

[0011] As an optional solution, a round hole is arranged on the dovetail-shaped serration, and the diameter of the round hole is 15 mm.

[0012] As an optional solution, the diameter of the steel wire is 0.9 mm, and the length of the steel wire embedded in the cement-based floor support plate unit and the length of the steel wire protruding from the cement-based floor support plate unit are both not less than 80 mm.

[0013] As an optional solution, the dovetail-shaped tooth groove of one cement-based floor support plate unit is opposite to the dovetail-shaped tooth groove of the other cement-based floor support plate unit, and the dovetail-shaped serration of one cement-based floor support plate unit is opposite to the dovetail-shaped serration of the other cement-based floor support plate unit.

[0014] As an optional solution, the width of the gap is not less than 30 mm.

[0015] As an optional solution, a plurality of truss steels are arranged on the cement-based floor support plate unit, and the truss steels are embedded in the concrete slurry after being integrally poured.

[0016] The cement-based floor support plate joint connecting structure has the following beneficial effects:

[0017] The cement-based floor support plate joint connecting structure utilizes the shearing resistance of the dovetail-shaped tooth groove of the cement-based floor support plate unit and the tensile resistance of the embedded steel wire, reliably connects the two cement-based floor support plate units and the cement-based floor support plate unit and the cast-in-place concrete, and thus forms a whole structure with the plurality of cement-based floor support plate units, avoids the anti-cracking problem of the traditional tight joint, and avoids the natural gap, so that the cement-based floor support plate unit can be used as a steel reinforcement protection layer and become part of the structure floor, improves the structural strength, and reduces the construction difficulty. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the cement-based floor support plate joint connecting structure provided by the embodiment of the utility model.

[0019] Figure 2 is a sectional view of the cement-based floor support plate joint structure provided by the embodiment of the present application;

[0020] Figure 3 is a structural schematic diagram of the joint in the cement-based floor support plate joint structure provided by the embodiment of the present application;

[0021] Figure 4 is Figure 3 is a sectional view of the cement-based floor support plate joint structure provided by the embodiment of the present application;

[0022] Figure 5 is a structural schematic diagram of the cement-based floor support plate joint structure provided by the embodiment of the present application;

[0023] Figure 6 is Figure 5 is an enlarged view of B in the cement-based floor support plate joint structure provided by the embodiment of the present application.

[0024] In the drawings:

[0025] 1, cement-based floor support plate; 11, dovetail-shaped tooth groove; 12, dovetail-shaped sawtooth; 13, steel wire; 14, round hole; 2, cast-in-place edge beam support; 3, gap; 4, concrete slurry; 5, truss reinforcement. DETAILED DESCRIPTION

[0026] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, rather than all the structures.

[0027] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through other feature between them. Moreover, first feature "on", "above" and "upper surface of" second feature includes that first feature is directly above and obliquely above second feature, or only indicates that horizontal height of first feature is higher than second feature. First feature "under", "below" and "under surface of" second feature includes that first feature is directly below and obliquely below second feature, or only indicates that horizontal height of first feature is less than second feature.

[0029] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0030] In addition, the terms "first", "second" and the like are only used for differentiation in description, and have no special meaning.

[0031] Please refer to Figures 1 to 6 As shown in the figure, the embodiment provides a cement-based floor support plate joint connecting structure, which comprises a cement-based floor support plate 1, a plurality of dovetail-shaped tooth grooves 11 are arranged on the edge of the cement-based floor support plate 1, a dovetail-shaped sawtooth 12 is formed between adjacent two dovetail-shaped tooth grooves 11, steel wires 13 are arranged on the side surfaces of the dovetail-shaped tooth groove 11 and the dovetail-shaped sawtooth 12, a plurality of cement-based floor support plates 1 are arranged in parallel, and the outermost cement-based floor support plate 1 is arranged to the edge of a cast-in-place edge beam support 2, a gap 3 is arranged between adjacent two cement-based floor support plates 1, and a concrete slurry 4 is integrally poured on the surface of the cast-in-place edge beam support 2, the gap 3 and each cement-based floor support plate 1, so as to form a whole structure floor.

[0032] Therefore, the shear resistance of the dovetail-shaped tooth groove 11 of the cement-based floor support plate 1 and the tensile resistance of the embedded steel wire 13 are utilized to ensure the reliable connection between the two cement-based floor support plates 1 and between the cement-based floor support plate 1 and the cast-in-place concrete, so that the plurality of cement-based floor support plates 1 form a whole, the traditional tight joint crack problem does not exist, and there is also no natural gap, the cement-based floor support plate 1 can be used as a steel reinforcement protection layer and become part of the structure floor, the structural strength is improved, and the construction difficulty is reduced.

[0033] Optionally, the slot width of the dovetail-shaped tooth groove 11 and the tooth width of the dovetail-shaped sawtooth 12 are both 96 mm, the slot depth of the dovetail-shaped tooth groove 11 and the tooth height of the dovetail-shaped sawtooth 12 are both 40 mm, and the corner of the dovetail-shaped tooth groove 11 and the corner of the dovetail-shaped sawtooth 12 are both 5 mm round arc chamfer.

[0034] The dovetail-shaped tooth groove 11 and the dovetail-shaped sawtooth 12 under this parameter are the optimal structure design, which can effectively resist shear force and avoid cracks caused by stress concentration, further enhancing the stability and durability of the joint, and ensuring that the overall floor still maintains excellent mechanical properties under various loads.

[0035] Optionally, the dovetail-shaped sawtooth 12 is provided with a round hole 14, and the hole diameter of the round hole 14 is 15 mm.

[0036] This round hole 14 can further improve the anchoring effect of the steel wire 13 with the concrete, enhance the shear capacity of the joint, and ensure the stability and safety of the overall structure.

[0037] Optionally, the diameter of the steel wire 13 is 0.9 mm, and the length of the steel wire 13 embedded in the cement base mold unit floor support plate 1 and the length of the steel wire 13 protruding from the cement base mold unit floor support plate 1 are both not less than 80 mm.

[0038] In this way, the anchoring effect of the steel wire 13 in the concrete slurry 4 is ensured, further improving the connection strength between the cement base mold unit floor support plate 1 and another cement base mold unit floor support plate 1 or cast-in-place edge beam support 2; the reasonable configuration of the steel wire 13 and the ingenious combination of the dovetail-shaped tooth groove 11 and the dovetail-shaped sawtooth 12 make the floor exhibit excellent toughness and anti-deformation ability when bearing dynamic load.

[0039] The production process of the cement base mold unit floor support plate 1: ordinary angle steel is used as the four-side mold, the inner side of the angle steel is placed with a rubber dovetail-shaped sawtooth 12-shaped flexible filling module, and a small round rod with a diameter of 15 mm is used to realize the molding of the dovetail-shaped sawtooth 12-shaped structure at the edge of the plate, and then half of the steel wire 13 is inserted into the flexible module, and after demolding, the effect of reserving the steel wire 13 at the edge of the cement base mold unit floor support plate 1 can be realized.

[0040] Optionally, the dovetail-shaped tooth grooves 11 of the two adjacent cement base mold unit floor support plates 1 are opposite to each other, and the dovetail-shaped sawteeth 12 are opposite to each other.

[0041] It should be noted that the two cement base mold unit floor support plates 1 are not directly connected by the dovetail-shaped tooth groove 11 and the dovetail-shaped sawtooth 12 in a way of opposite fitting, but are connected as a whole by cast-in-place concrete, so the design of the dovetail-shaped tooth groove 11 and the dovetail-shaped sawtooth 12 aims to improve the engagement force with the cast-in-place concrete, and the way of slot-to-slot and tooth-to-tooth is better.

[0042] Further, the width of the gap 3 is not less than 30 mm.

[0043] In this width gap 3, the filling of high flowability concrete slurry 4 can enhance the compactness and integrity of the overall structure.

[0044] Optionally, a plurality of truss steel bars 5 are arranged on the cement base mold unit floor support plate 1, and the truss steel bars 5 are embedded in the concrete slurry 4 after pouring.

[0045] Therefore, through the arrangement of the truss steel bars 5, the load-carrying capacity and bending resistance of the cement base mold unit floor support plate 1 are further enhanced, and the truss steel bars 5 and the steel wires 13 work together to optimize the internal force distribution and improve the strength and seismic performance of the overall structure.

[0046] Construction connection process: according to the floor area, design a proper number of cement base mold unit floor support plates 1 and arrange them in order, the outermost cement base mold unit floor support plate 1 is laid to the edge of the cast-in-place edge beam support 2, and the gap 3 between the adjacent two cement base mold unit floor support plates 1 is not less than 30 mm; then the concrete slurry 4 is poured in the dovetail-shaped tooth groove 11, the round hole 14, the gap 3 of each cement base mold unit floor support plate 1, the upper part of each cement base mold unit floor support plate 1, and the cast-in-place edge beam support 2 at one time to form an overall structure floor.

[0047] Therefore, not only the construction process is simplified, but also the stiffness and stability of the structural floor are greatly improved, ensuring the long-term safe use of the building.

[0048] In summary, the cement base floor joint connection structure has the following advantages:

[0049] 1) The cement base mold unit floor support plate 1 using this method can be used as part of the structural floor, without additional structural floor load, so it will not affect the structure calculation, and does not need to increase the beam and slab reinforcement, wall column foundation bearing capacity, compared with the traditional cement base floor, it saves the construction engineering cost;

[0050] 2) The cement base mold unit floor support plate 1 using this method has no gap at the joint position, which is not a crack-resistant weak position, and because of the shear-resistant structure and the effect of the anti-pulling steel wire 13, the crack-resistant effect is more favorable than ordinary positions, and the connection is more reliable, so there is no problem of cracks in the traditional cement base floor tight joint in the later period, which is equivalent to the effect of the overall cast-in-place floor.

[0051] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A cement-based floor deck joint connection structure, characterized in that, The system includes a cement-based formwork unit floor slab (1), the edge of which is provided with several dovetail-shaped grooves (11), and dovetail-shaped serrations (12) are formed between two adjacent dovetail-shaped grooves (11). Steel wires (13) extend from the sides of both the dovetail-shaped grooves (11) and the dovetail-shaped serrations (12). Several cement-based formwork unit floor slabs (1) are laid flat, and the outermost cement-based formwork unit floor slab (1) is laid to the edge of the cast-in-place edge beam support (2). A gap (3) is left between two adjacent cement-based formwork unit floor slabs (1). Concrete slurry (4) is poured into the cast-in-place edge beam support (2), the gap (3), and the surface of each cement-based formwork unit floor slab (1), thereby forming an integral structural floor slab.

2. The cement-based floor deck joint connection structure according to claim 1, characterized in that, The width of the dovetail groove (11) and the width of the dovetail saw tooth (12) are both 96 mm. The depth of the dovetail groove (11) and the height of the dovetail saw tooth (12) are both 40 mm. The corners of the dovetail groove (11) and the corners of the dovetail saw tooth (12) are both 5 mm rounded chamfers.

3. The cement-based floor decking joint connection structure according to claim 1, characterized in that, The dovetail-shaped saw teeth (12) are provided with a round hole (14), the diameter of which is 15mm.

4. The cement-based floor deck joint connection structure according to claim 1, characterized in that, The diameter of the steel wire (13) is 0.9 mm, and the length of the steel wire (13) embedded in the cement base mold unit floor deck (1) and the length extending out of the cement base mold unit floor deck (1) are both not less than 80 mm.

5. The cement-based floor deck joint connection structure according to claim 1, characterized in that, The dovetail grooves (11) of two adjacent cement base formwork unit floor decks (1) are opposite to each other, and the dovetail serrations (12) are opposite to each other.

6. The cement-based floor deck joint connection structure according to claim 1, characterized in that, The width of the gap (3) is not less than 30 mm.

7. The cement-based floor deck joint connection structure according to claim 1, characterized in that, The cement base formwork unit floor slab (1) is provided with a number of truss steel bars (5), which are embedded in the concrete grout (4) after the concrete is poured.

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