Laminated slab in key groove type seam connection

Abstract

The utility model discloses a key groove type joint connection laminated slab which comprises a prefabricated slab, a reinforcing steel bar layer is arranged in the prefabricated slab, and a group of key grooves are respectively arranged on the peripheral edge of the upper surface of the prefabricated slab at intervals. The reinforcing steel bar layer comprises a set of plate ribs with hooks arranged in the width direction of the prefabricated slab at intervals and a set of straight plate ribs arranged in the length direction of the prefabricated slab at intervals, the plate ribs with the hooks and the straight plate ribs are perpendicularly arranged in a crossed mode, and the ends of the plate ribs with the hooks and the ends of the straight plate ribs are located between every two adjacent key grooves. The plate rib with the hook and the straight plate rib do not exceed the end face of the prefabricated plate; the composite plate can be machined, assembled and poured in a prefabrication factory, the adjacent composite plates are assembled on a building construction site by arranging the connecting steel bars in the key grooves, the joint connection quality of the composite plates is guaranteed, and the installation and construction efficiency of the composite plates is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a composite plate connected with a keyway type joint. Background Art

[0002] With the promotion of prefabricated buildings and technological development, current prefabricated floor slabs usually adopt the method of prefabricating the lower base plate and casting the upper composite layer. On the one hand, the joints between the prefabricated composite slabs often need to be cast in place with reserved slabs. On the other hand, the steel bars of the composite slabs are anchored into the cast-in-place beams to form the whole in a cast-in-place manner.

[0003] This situation often has the following problems:

[0004] 1) The joints between prefabricated composite panels often require on-site bending of the protruding plate reinforcements reserved on the four sides of the composite panels before installing the reinforcement at this location. The installation of the composite panels and beams also requires the adjustment of the protruding plate reinforcements to anchor them into the supports. This operation requires cumbersome steel bar processing and adjustment, costs too much manpower, and the installation quality cannot be guaranteed, resulting in low on-site construction efficiency;

[0005] 2) The joints between prefabricated composite slabs are prone to loose joints, which often cannot effectively transfer the tensile force of the steel bars, making the shear resistance of this part weak, affecting the overall quality of the building.

[0006] Therefore, the present application proposes a composite panel with a keyway type joint connection. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the utility model provides a composite plate connected with a keyway type joint which has a reasonable design and a reliable structure.

[0008] The technical solution of the utility model is as follows:

[0009] A composite plate connected by keyway type joints comprises a precast plate, wherein a steel bar layer is provided inside the precast plate, and a group of keyways are arranged at intervals on the four edges of the upper surface of the precast plate, the steel bar layer comprises a group of plate bars with bent hooks arranged at intervals along the width direction of the precast plate and a group of straight plate bars arranged at intervals along the length direction of the precast plate, the plate bars with bent hooks and the straight plate bars are arranged perpendicularly and crosswise, the ends of the plate bars with bent hooks and the straight plate bars are located between two adjacent keyways, and the plate bars with bent hooks and the straight plate bars do not exceed the end surface of the precast plate.

[0010] Furthermore, a group of lifting trusses are also provided inside the prefabricated panel, and the lifting trusses include truss steel bars and truss connecting bars. The truss steel bars are in a continuous S-shaped structure, and three truss connecting bars are distributed in an isosceles triangle. Two of the truss steel bars are respectively connected and arranged at the isosceles sides of the isosceles triangle, and both ends of the truss steel bars are respectively fixedly connected to the truss connecting bars.

[0011] Furthermore, the keyway is a groove structure, which is opened at the top and side positions of the prefabricated plate, and an obtuse slope structure is formed between the bottom surface of the keyway and the prefabricated plate, and the preferred slope structure angle is 135°.

[0012] Furthermore, the key grooves between adjacent prefabricated panels are connected correspondingly to form an inverted trapezoidal connecting groove structure, and connecting steel bars are arranged inside the trapezoidal connecting groove structure to realize the connection between the prefabricated panels after concrete is poured on the prefabricated panels.

[0013] Furthermore, support connecting steel bars are provided between the precast slab and the beam support, and the connection between the precast slab and the beam support is achieved after concrete is poured on the precast slab.

[0014] Furthermore, the connecting steel bars are arranged in accordance with the trapezoidal connecting groove structure, and their two ends are bent after extending out of the trapezoidal connecting groove and arranged parallel to the upper surface of the prefabricated board; the two protruding ends of a group of the connecting steel bars are respectively connected by connecting straight bars in a direction perpendicular to the trapezoidal connecting groove.

[0015] Furthermore, the support connecting steel bars are arranged in the shape of the keyway, and one end thereof extends horizontally out of the side of the prefabricated plate along the bottom surface of the keyway, and the other end extends out of the keyway from the top of the keyway and then bends, and is arranged parallel to the upper surface of the prefabricated plate; a group of the support connecting steel bars are connected by connecting straight bars in a direction perpendicular to the keyway.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1) The utility model can be processed, assembled and cast in a prefabrication plant. Adjacent composite panels are assembled at the construction site by arranging connecting steel bars in keyways, thereby ensuring the connection quality of the composite panel joints and improving the installation and construction efficiency of the composite panels.

[0018] 2) The steel bar layer of the prefabricated board of the utility model does not extend out of the end surface of the prefabricated board, which is convenient for on-site hoisting construction, reduces the difficulty of installation, improves the efficiency of engineering construction, and promotes the progress of the project. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal plate reinforcement structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the plate reinforcement with bent hooks of the utility model;

[0022] Figure 4 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 5 The three views of the keyway of the utility model are shown in Figure a, Figure b is a top view, and Figure c is a side view;

[0024] Figure 6 It is a schematic diagram of the connection structure of two prefabricated panels of the utility model;

[0025] Figure 7 This is a schematic diagram of the connecting steel bar structure of the utility model;

[0026] Figure 8 This is a schematic diagram of the connection structure between the prefabricated plate and the support of the utility model;

[0027] Fig. 9 This is a schematic diagram of the support connecting steel bar structure of the utility model;

[0028] Fig.10 This is a schematic diagram of the cross-sectional structure of the hoisting truss of the utility model;

[0029] Fig.11 This is a front structural diagram of the hoisting truss of the utility model;

[0030] In the figure: 1. Precast plate; 101. Plate reinforcement with bent hook; 102. Straight plate reinforcement; 2. Keyway; 3. Lifting truss; 301. Truss reinforcement; 302. Upper truss connecting reinforcement; 303. Lower truss connecting reinforcement; 4. Connecting reinforcement; 5. Bracket connecting reinforcement; 6. Support. DETAILED DESCRIPTION

[0031] The utility model will be further described below in conjunction with the accompanying drawings of the specification, but the protection scope of the utility model is not limited thereto.

[0032] like Figure 1 As shown, a composite plate connected by a keyway type joint includes a precast plate 1, a keyway 2 and a lifting truss 3; the precast plate 1 adopts a rectangular structure, the keyway 2 is arranged at the edge positions of the four sides of the upper surface of the precast plate 1, and the keyway 2 is arranged at equal intervals on each side; there are 6 lifting trusses 3, which are respectively located at the left, middle and right positions of the precast plate 1.

[0033] like Figure 2 , 3 As shown, a steel bar layer is provided inside the precast panel 1, and the steel bar layer is arranged in the middle part of the precast panel 1. The steel bar layer includes a group of plate bars 101 with bent hooks arranged at intervals along the width direction of the precast panel 1 and a group of straight plate bars 102 arranged at intervals along the length direction of the precast panel 1, wherein the plate bars 101 with bent hooks and the straight plate bars 102 are arranged vertically and crossed, and are fixed by steel wire binding at the intersection, and the lifting truss 3 is also fixed at the corresponding position on the steel bar layer. After the precast panel is cast, the top of the lifting truss 3 is exposed from the upper surface of the precast panel 1.

[0034] like Figure 4 , 5 As shown, the keyway 2 is a groove structure, which is opened at the top and side positions of the precast panel 1. An obtuse slope structure is formed between the bottom surface of the keyway 2 and the precast panel, and an obtuse slope structure is also formed between the two side surfaces of the keyway 2 and the precast panel, thereby forming an inverted trapezoidal cross section.

[0035] like Figure 6 , 7 As shown, the keyways between adjacent prefabricated panels 1 are connected correspondingly to form an inverted trapezoidal connection groove structure, and a connecting steel bar 4 is arranged inside the trapezoidal connection groove structure to realize the connection between the prefabricated panels after pouring concrete on the prefabricated panels. The middle part of the connecting steel bar is arranged in accordance with the trapezoidal connection groove structure, and its two ends extend out of the trapezoidal connection groove and then bend, and are arranged above the upper surface of the prefabricated panel in parallel with the upper surface of the prefabricated panel; the two extended ends of a group of connecting steel bars are respectively connected by connecting straight bars in a direction perpendicular to the trapezoidal connection groove.

[0036] like Figure 8 , 9 As shown, a support connecting steel bar 5 is provided between the precast panel 1 and the beam support 6, and the connection between the precast panel and the beam support is realized after concrete is poured on the precast panel; the support connecting steel bar 5 is arranged in accordance with the key slot 2, and one end thereof extends horizontally out of the side of the precast panel along the bottom of the key slot 2, and the other end extends out from the opening at the top of the key slot and then bends, and is arranged above the upper surface of the precast panel parallel to the upper surface of the precast panel; a group of support connecting steel bars are respectively connected by connecting straight bars in a direction perpendicular to the key slot, wherein the connecting straight bars are arranged at one end of the support connecting steel bar extending to one end of the precast panel.

[0037] like Fig.10 , 11 As shown, the lifting truss 3 includes truss steel bars 301 and truss connecting bars, the truss connecting bars include an upper truss connecting bar 302 and two lower truss connecting bars 303; there are two truss steel bars 301, the truss steel bars are in a continuous S-shaped structure, the three truss connecting bars are distributed in an isosceles triangle, and the two truss steel bars are respectively connected and arranged at the position between the upper truss connecting bar 302 and the lower truss connecting bar 303.

[0038] The above embodiments are only preferred embodiments of the present utility model and are not limitations on the technical solutions of the present utility model. Any technical solution that can be implemented on the basis of the above embodiments without creative work should be deemed to fall within the scope of protection of the patent of the present utility model.

Claims

1. A composite panel connected by a keyway joint, comprising a prefabricated panel (1), characterized in that: A steel bar layer is provided inside the prefabricated plate (1), and a group of key grooves (2) are arranged at intervals on the four edges of the upper surface of the prefabricated plate (1). The steel bar layer comprises a group of plate bars (101) with bent hooks arranged at intervals along the width direction of the prefabricated plate (1) and a group of straight plate bars (102) arranged at intervals along the length direction of the prefabricated plate (1). The plate bars (101) with bent hooks and the straight plate bars (102) are arranged vertically and crosswise, and the ends of the plate bars (101) with bent hooks and the straight plate bars (102) are located between two adjacent key grooves (2), and the plate bars (101) with bent hooks and the straight plate bars (102) do not extend beyond the end surface of the prefabricated plate (1).

2. A composite panel connected by keyway joints according to claim 1, characterized in that: A group of hoisting trusses (3) are also provided inside the prefabricated panel (1), the hoisting trusses (3) comprising truss steel bars (301) and truss connecting bars, the truss steel bars (301) presenting a continuous S-shaped structure, three truss connecting bars being distributed in an isosceles triangle, two truss steel bars being respectively connected and arranged at the isosceles sides of the isosceles triangle, and two ends of the truss steel bars (301) are respectively fixedly connected to the truss connecting bars.

3. A composite panel connected by keyway joints according to claim 1, characterized in that: The keyway (2) is a groove structure, and is opened at the top and side positions of the prefabricated plate (1), respectively, and a slope structure with an obtuse angle is formed between the bottom surface of the keyway (2) and the prefabricated plate (1).

4. A composite panel connected with a keyway joint according to claim 1, characterized in that: The keyways between adjacent prefabricated panels (1) are connected correspondingly to form an inverted trapezoidal connection groove structure, wherein a connection steel bar (4) is provided inside the trapezoidal connection groove structure, and the connection between the prefabricated panels (1) is achieved after concrete is poured on the prefabricated panels (1).

5. The composite plate connected by keyway joint according to claim 1, characterized in that: A support connection steel bar (5) is provided between the precast plate (1) and the beam support (6), and the connection between the precast plate (1) and the beam support (6) is achieved after concrete is poured on the precast plate (1).

6. A composite panel connected with a keyway joint according to claim 4, characterized in that: The connecting steel bars (4) are arranged in accordance with the trapezoidal connecting groove structure, and their two ends extend out of the trapezoidal connecting groove and are bent, and are arranged parallel to the upper surface of the prefabricated plate (1); the two extended ends of a group of the connecting steel bars (4) are respectively connected by connecting straight bars in a direction perpendicular to the trapezoidal connecting groove.

7. A composite panel connected with a keyway joint according to claim 5, characterized in that: The support connecting steel bars (5) are arranged in accordance with the keyway (2), and one end thereof extends horizontally from the side of the prefabricated plate (1) along the bottom surface of the keyway (2), and the other end extends from the top of the keyway (2) and then bends to be arranged parallel to the upper surface of the prefabricated plate (1); a group of the support connecting steel bars (5) are connected by connecting straight bars in a direction perpendicular to the keyway.

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