A type of precast concrete composite floor slab

Abstract

This invention provides a precast composite concrete floor slab, relating to the field of concrete floor slab technology. It includes a main floor slab, which is a precast component, cast using a rectangular template. A steel beam frame, connected by reinforcing bars, is cast in the middle of the main floor slab. Trapezoidal modules are integrally formed on the exterior of the main floor slab. The trapezoidal modules have a trapezoidal structure. Two sets of main floor slabs can be combined by opposing trapezoidal modules. Four sets of connecting grooves are formed on the adjacent sides of the two sets of main floor slabs. The main floor slab and the hollow beam frame together form the floor slab structure. The hollow beam frame provides shock absorption, eliminating the need for separate gap damping and ensuring the floor slab's strength. When the upper and lower trapezoidal modules are fitted together, the sides of the trapezoidal modules also form staggered slopes. A small amount of concrete is needed to fix the trapezoidal modules, forming a stable floor slab. Assembly can be completed with only a small amount of concrete, facilitating manufacturing and solving the problem of inconvenient shock absorption in existing floor slabs.

Description

Technical Field

[0001] This invention relates to the field of concrete floor slab technology, and in particular to a precast composite concrete floor slab. Background Technology

[0002] Composite floor slabs are assembled monolithic floor slabs made by stacking precast slabs and cast-in-place reinforced concrete layers. The main materials are concrete and steel bars. During subsequent processing, steel bars are used to fix the floor slabs, and then gaps are poured to fix the floor slabs and the building, thus completing the construction.

[0003] Currently used composite floor slabs have the following disadvantages:

[0004] 1. Floor slabs made of concrete and steel reinforcement only provide load-bearing function and require seismic joints to buffer floor vibration. This will lead to a reduction in strength and a lack of shock absorption function that can avoid affecting the strength of concrete.

[0005] 2. The floor slab structure is simple. If heating is to be installed, it needs to be pre-installed, which will reduce the strength of the floor slab or increase its thickness, thereby reducing the usable space and lacking the function of temperature control without affecting the space.

[0006] 3. Lacks heat preservation effect and lacks controllable heat insulation function. Summary of the Invention

[0007] In view of this, the present invention provides a precast concrete composite floor slab with a hollow beam frame that can be used for heating. The interior of the hollow beam frame can be filled with water for circulation, and a heater and drive assembly are connected in series, so it can be used as underfloor heating. A circulation channel is formed by the guide edge, which facilitates the interconnection between the hollow beam frames. If circulating water is selectively filled and heated inside the steel wire hose and the hollow beam frame, it can be used as underfloor heating without the need for additional underfloor heating installation, thus making the living environment more comfortable.

[0008] This invention provides a precast composite concrete floor slab, specifically including a main floor slab, which is a precast component, cast using a rectangular template. A steel beam frame, connected by reinforcing bars, is cast in the middle of the main floor slab. A trapezoidal module is integrally formed on the exterior of the main floor slab; the trapezoidal module has a trapezoidal structure; two sets of main floor slabs can be combined by opposing trapezoidal modules; four sets of butt joint grooves are formed on the adjacent sides of the two sets of main floor slabs; a hollow beam frame has butt joint pins integrally formed on both sides at the top and bottom ends, aligned with the butt joint grooves, allowing the butt joint pins to fit into the butt joint grooves.

[0009] Optionally, the length and width of the upper base of the trapezoidal module are lower than the length and width of the lower base.

[0010] Optionally, the hollow beam frame is provided with dovetail grooves for assembly and connection on the middle of each side, and the two sets of hollow beam frames can be fixedly connected by splicing blocks that match the dovetail grooves.

[0011] Optionally, the hollow beam frame has a comb-like structure in the middle, and the interior of the hollow beam frame is a hollow structure. The hollow beam frame has an integrally provided guide edge, and the hollow beam frame forms a uniform circulation channel through the guide edge.

[0012] Optionally, a steel wire hose is connected between the two sides of the hollow beam frame, and a connecting seat is fixedly provided at the end of the steel wire hose. The connecting seat is integrally provided with a flange structure, and the two sets of connecting seats are fixedly connected by a mating buckle.

[0013] Optionally, the trapezoidal module is made by secondary casting using a molding template.

[0014] Optionally, the central grid of the hollow beam frame encloses the trapezoidal module but does not contact the trapezoidal module.

[0015] Optionally, the docking buckle includes: a control plate, the number of control plates is set to two sets, a reinforcing flange is integrally provided on the outside of the control plate, the two sets of control plates are hinged to each other, and a locking screw is provided on the outside of one control plate by a threaded connection.

[0016] The beneficial effects are as follows:

[0017] 1. The main floor slab and hollow beam frame together form the floor slab structure. The hollow beam frame can absorb shock, eliminating the need for separate gap damping, thus ensuring the strength of the floor slab. The upper and lower trapezoidal modules can fit together stably, providing support. When the upper and lower trapezoidal modules fit together, the sides of the trapezoidal modules also form staggered slopes. A small amount of concrete can be used to fix the trapezoidal modules, thereby fixing the two sets of main floor slabs to form a stable floor slab. Assembly can be completed with only a small amount of concrete, without affecting transportation, and it is also convenient to manufacture.

[0018] 2. The interior of the hollow beam frame can be filled with water for circulation, and a heater and drive component can be connected in series to be used as underfloor heating. The circulation channel is formed by the guide edge, which facilitates the interconnection between the hollow beam frames. If the steel wire hose and the interior of the hollow beam frame are selectively filled with circulating water and heated, it can be used as underfloor heating without the need for additional underfloor heating installation, making the living environment more comfortable.

[0019] 3. The internal space of the hollow beam frame has a dual use. If the room is equipped with air conditioning or fan heating and underfloor heating is not needed, the hollow beam frame can be emptied. First, the water inside the hollow beam frame is removed, and then the air inside the hollow beam frame is removed, which can create a negative pressure space. The edges of the floor and the connection between the wall panels and the floor are all hollow beam frames, which can slow down the heat transfer and provide a heat preservation effect. Attached Figure Description

[0020] Figure 1 A disassembled structural diagram according to an embodiment of the present invention is shown;

[0021] Figure 2 An embodiment according to the present invention is shown. Figure 1 A schematic diagram of the side view structure;

[0022] Figure 3 A schematic diagram of the assembly structure according to an embodiment of the present invention is shown;

[0023] Figure 4 A schematic diagram of a casting method according to an embodiment of the present invention is shown;

[0024] Figure 5 A schematic diagram of the combined structure according to an embodiment of the present invention is shown;

[0025] Figure 6 An embodiment according to the present invention is shown. Figure 5 Another structural diagram from a different angle;

[0026] Figure 7 A schematic diagram of the internal structure of the hollow beam frame according to an embodiment of the present invention is shown;

[0027] Figure 8 A partially enlarged structural schematic diagram of A according to an embodiment of the present invention is shown.

[0028] List of reference numerals

[0029] 1. Main floor slab; 101. Steel beam frame; 102. Trapezoidal module; 103. Connecting groove; 2. Hollow beam frame; 201. Connecting pin; 202. Dovetail groove; 203. Guide edge; 204. Steel wire hose; 205. Connecting seat; 3. Connecting buckle; 301. Control panel; 302. Reinforcing strip; 303. Locking screw. Detailed Implementation

[0030] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0031] Example 1: Please refer to Figures 1 to 8 As shown:

[0032] This invention proposes a precast composite concrete floor slab, comprising a main floor slab 1, which is a precast component and is cast using a rectangular template. A steel beam frame 101, connected by reinforcing bars, is cast in the middle of the main floor slab 1. A trapezoidal module 102 is integrally formed on the exterior of the main floor slab 1. The trapezoidal module 102 has a trapezoidal structure. Two sets of main floor slabs 1 can be combined opposite each other using the trapezoidal module 102. Four sets of connecting grooves 103 are formed on the adjacent sides of the two sets of main floor slabs 1. A hollow beam frame 2 has connecting pins 201 integrally formed on both sides of the upper and lower ends, aligned with the connecting grooves 103. The connecting pins 201 can be inserted into the connecting grooves 103.

[0033] In this case, the length and width of the upper base of the trapezoidal module 102 are lower than the length and width of the lower base.

[0034] Among them, the hollow beam frame 2 has dovetail grooves 202 for assembly and connection on both sides and in the middle. The two sets of hollow beam frames 2 can be fixedly connected by splicing blocks that match the dovetail grooves 202.

[0035] The hollow beam frame 2 has a comb-like structure in the middle and a hollow structure inside. The hollow beam frame 2 has an integral guide edge 203 inside, and the hollow beam frame 2 forms a uniform circulation channel through the guide edge 203.

[0036] Among them, steel wire hoses 204 are connected in the middle of both sides of the hollow beam frame 2. Connecting seats 205 are fixedly installed at the ends of the steel wire hoses 204. The connecting seats 205 are integrally provided with a flange structure on the outside. The two sets of connecting seats 205 are fixedly connected by setting a docking buckle 3.

[0037] The trapezoidal module 102 is made by secondary casting using a molding template.

[0038] Among them, the middle grid of the hollow beam frame 2 wraps around the trapezoidal module 102 but does not contact the trapezoidal module 102.

[0039] The docking buckle 3 includes: a control plate 301, the number of control plates 301 is set to two sets, the control plate 301 is integrally provided with a reinforcing flange 302, the two sets of control plates 301 are hinged to each other, and a locking screw 303 is provided on the outside of one control plate 301 through a threaded connection.

[0040] like Figure 1-8 As shown, the floor slab in this application is constructed through three pours. The specific steps are as follows:

[0041] The first pouring is carried out in the factory. First, the main floor slab 1 is prefabricated using a rectangular frame template. The steel beam frame 101 and the connecting steel reinforcement frame are placed in the frame template for prefabrication. The strength of the main floor slab 1 is ensured by the steel reinforcement structure. Then, the main floor slab 1 is inverted for a second pouring. The trapezoidal module 102 and the connecting groove 103 are poured using the template. The steel beam frame 101 is wrapped by the trapezoidal module 102.

[0042] At this point, the main floor slab 1 is formed as a whole, which is convenient for integrated stacking and stacking, or it can be transported by vehicle to the interior of the building for the third pouring.

[0043] The main floor slab 1 and hollow beam frame 2 are transported into the building. Then, the main floor slab 1 and hollow beam frame 2 are assembled using the connecting groove 103 and connecting pin 201 to form a whole floor slab. The floor slab is then temporarily tied with ropes, and the opening of the hollow beam frame 2 is raised upward. Three pours are made between the hollow beam frame 2 and the trapezoidal module 102. Since the length and width of the upper base of the trapezoidal module 102 are lower than the length and width of the lower base, the sides of the trapezoidal module 102 are all sloping. When the upper and lower trapezoidal modules 102 are attached, the sides of the trapezoidal module 102 are also staggered sloping. A small amount of concrete can be used to fix the trapezoidal module 102, thereby fixing the two sets of main floor slabs 1 to form a stable floor slab.

[0044] The hollow beam frame 2 will be affected by vibration, so there is no need to install seismic joints separately.

[0045] Example 2: Based on Example 1, such as Figure 6 As shown, the interior of the hollow beam frame 2 is a hollow structure, and a circulation channel is formed through the guide edge 203, which facilitates the interconnection between the hollow beam frames 2. The steel wire hose 204 and the interior of the hollow beam frame 2 are filled with circulating water and heated, which can be used as underfloor heating without the need for additional underfloor heating to occupy space.

[0046] Example 3: Based on Example 1, such as Figure 6 As shown, the air or water inside the hollow beam 2 can be extracted by a pump, thereby reducing the heat conduction efficiency and providing insulation; the guide edge 203 also provides a supporting function, strengthening the hollow beam 2 and preventing the hollow beam 2 from collapsing when it is under negative pressure inside.

[0047] The specific usage and function of this embodiment: In this invention, when in use, the main floor slab 1 is first prefabricated using a rectangular frame template. The steel beam frame 101 and the connected steel reinforcement frame are placed in the frame template for prefabrication. The strength of the main floor slab 1 is ensured by the steel reinforcement structure. Then, the main floor slab 1 is inverted and poured a second time. The trapezoidal module 102 and the connecting groove 103 are poured using the template. The steel beam frame 101 is wrapped by the trapezoidal module 102.

[0048] The main floor slab 1 and hollow beam frame 2 are transported into the building. Then, the main floor slab 1 and hollow beam frame 2 are assembled using the docking groove 103 and docking pin 201 to form the floor slab as a whole. The floor slab is temporarily tied with ropes. Then, the floor slab is erected and poured three times between the hollow beam frame 2 and the trapezoidal module 102. A small amount of concrete is poured to fix the trapezoidal module 102, thereby fixing the two sets of main floor slabs 1. Finally, the binding is removed.

[0049] The floor slab is laid out as a ground by inserting dovetail blocks into dovetail grooves 202, thus forming a floor slab that provides load-bearing function;

[0050] When splicing the hollow beam frame 2, the two sets of connecting seats 205 outside the hollow beam frame 2 are pre-assembled together, the ports outside the connecting seats 205 are connected and sealed with sealing rings, then the docking buckle 3 is installed, the locking screw 303 is tightened to open the two sets of control plates 301, and the connecting seats 205 are fastened together using two sets of reinforcing strips 302 to achieve fixation. The outermost set of steel wire hoses 204 is led indoors for future use.

[0051] By filling the steel wire hose 204 and the hollow beam 2 with circulating water and heating it, it can be used as underfloor heating. Conversely, by removing the air or water from the hollow beam 2, the heat transmission can be slowed down and the heat preservation effect can be provided.

Claims

1. A precast concrete composite floor slab, characterized in that, Includes a main floor slab (1), which is a precast component. The main floor slab (1) is cast using a rectangular template. A steel beam frame (101) connected by reinforcing bars is cast in the middle of the main floor slab (1). A trapezoidal module (102) is integrally set on the outside of the main floor slab (1). The trapezoidal module (102) is a trapezoidal structure. Two sets of main floor slabs (1) can be combined in opposite directions through the trapezoidal module (102). Four sets of connecting grooves (103) are opened on the adjacent sides of the two sets of main floor slabs (1). Hollow beam frame (2), both sides of the hollow beam frame (2) are integrally provided with docking pins (201) aligned with docking grooves (103), and the docking pins (201) can fit into the docking grooves (103); the middle of the hollow beam frame (2) is a comb-shaped structure, the interior of the hollow beam frame (2) is a hollow structure, and the interior of the hollow beam frame (2) is integrally provided with guide edges (203), and the hollow beam frame (2) forms a uniform circulation channel through the guide edges (203); the middle grid of the hollow beam frame (2) wraps the trapezoidal module (102) and does not contact the trapezoidal module (102).

2. The precast concrete composite floor slab as described in claim 1, characterized in that, The length and width of the upper base of the trapezoidal module (102) are lower than the length and width of the lower base.

3. The precast composite concrete floor slab as described in claim 1, characterized in that, The hollow beam frame (2) has dovetail grooves (202) for assembly and connection on its sides and the two sets of hollow beam frames (2) are fixedly connected by splicing blocks that match the dovetail grooves (202).

4. The precast concrete composite floor slab as described in claim 1, characterized in that, The hollow beam (2) is connected by a steel wire hose (204) in the middle of both sides. A connecting seat (205) is fixedly installed at the end of the steel wire hose (204). The connecting seat (205) is integrally provided with a flange structure. The two sets of connecting seats (205) are fixedly connected by a mating buckle (3).

5. The precast concrete composite floor slab as described in claim 1, characterized in that, The trapezoidal module (102) is made by secondary casting using a molding template.

6. The precast concrete composite floor slab as described in claim 4, characterized in that, The docking buckle (3) includes: The number of control boards (301) is set to two sets. The control boards (301) are integrally provided with reinforcing edging strips (302). The two sets of control boards (301) are hinged together. A locking screw (303) is provided on the outside of one control board (301) through a threaded connection.

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