Form-removal-free inter-pile plate structure and construction method

Abstract

The invention discloses a formwork-removal-free inter-pile plate structure which comprises a component A, a component B, a component C, a component D, a component E, a component F, a component G, a concrete top beam, a cast-in-place concrete pile and fixing steel bars. The component G is mounted on the cast-in-place concrete pile by drilling holes in the cast-in-place concrete pile or prefabricating the cast-in-place concrete pile; the component G and the component F are cooperatively connected and mounted; the component D is fixed in the clamping groove of the component F through a self-tapping screw; the middle part of the component A is matched with a fixed steel bar of the concrete top beam; the component B and the component C are matched for extension installation; the multiple components D are connected and installed in a matched mode through the multiple components E; and inter-pile plate concrete pouring is conducted from the hopper at the upper end of the component A. One-time pouring of the inter-pile plate can be completed, the formwork dismantling procedure can be omitted, manpower and time cost are saved, dismantling damage is avoided, and the problems that in a traditional technology, the joint of the top beam bottom and the inter-pile plate is difficult to construct, poor in pouring quality and prone to water seepage are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a formwork-free pile-slab structure and a construction method for improving one-time casting quality. Background Art

[0002] In construction projects, the construction of pile slabs is a common operation. Traditional pile slab construction usually uses wooden or steel formwork, which needs to be removed after the concrete is poured. This not only consumes a lot of manpower, material resources and time, but may also damage the pile slab due to improper formwork removal, affecting its quality and appearance. At the same time, during the pouring process of traditional construction methods, the joint between the crown beam and the pile slab is difficult to construct, and problems such as loose concrete vibration, leakage, and cracks often occur, resulting in the strength and durability of the pile slab. Performance is difficult to meet the design requirements, water seepage occurs, and the overall stability and safety of the building structure is reduced. Therefore, there is an urgent need for a new construction method to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a formwork-free pile-slab structure and a construction method for improving the one-time casting quality, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A formwork-free pile-slab structure, comprising a component A, a component B, a component C, a component D, a component E, a component F, a component G, a concrete crown beam, a concrete cast-in-place pile, and fixed steel bars; The component A has a casting hole, a water-stop fixing plate and a steel bar slot in the middle; The component B has a hopper, a lifting ring at the upper diagonal end, a pouring pipe at the lower end, and an external thread at the bottom end of the pouring pipe; The upper end of the component C has an inner thread, which cooperates with the outer thread of the component B to connect and extend the installation; The component D is a cement fiber board; The cross section of the component E is rectangular, and the upper end and the lower end of the component E are respectively provided with an upper slot and a lower slot; The cross section of the member F is square, with a steel bar connection hole on the back and a bendable folding piece on the front; The component G has a connecting thread, which cooperates with the steel bar connecting hole on the component F for connection and installation; The component G is installed on the concrete cast-in-place pile by drilling a hole on the concrete cast-in-place pile or prefabrication; the component G is connected and installed in coordination with the component F; the component D is fixed in the slot of the component F by self-tapping screws; the middle part of the component A is installed in coordination with the fixed steel bars of the concrete crown beam; the component B is installed in coordination with the component C for extension; a plurality of components D are connected and installed through a plurality of components E; and the inter-pile slab concrete is poured from the hopper at the upper end of the component A.

[0005] Furthermore, the component F is a connecting clip, and the component F is installed with the component G through the steel bar connecting hole; the component F is connected and installed with the component D through a bendable folding piece.

[0006] Furthermore, the length of component E is consistent with the length of component D; the components D and E are connected and installed through the upper and lower slots.

[0007] Furthermore, the component B vertically connects a plurality of components C, so that the hopper and the pipe fittings are extended to ensure the pouring of the inter-pile slab concrete.

[0008] The above-mentioned construction method of the formwork-free pile-slab structure first prepares the components A, B, C, D, E, F and G required for pouring the pile-slab as required, and then operates according to the following steps: Step 1: Prepare concrete that meets the design strength grade requirements, and conduct quality inspections on cement, aggregates, and admixtures to ensure that all indicators are qualified; at the same time, prepare cement fiberboard, and check the size, flatness, and strength of the cement fiberboard. The surface should be flat and smooth without deformation or damage; Step 2: Clean the site between the piles to ensure that there are no debris or obstacles; accurately measure and lay out the lines according to the designed position of the pile slab, and mark the template installation position and steel bar layout position; Step 3: Debug concrete mixing equipment, transport vehicles, and vibrating equipment to ensure that the equipment operates normally and meets construction requirements; Step 4: Straighten, cut and bend the steel bars according to the design drawings to ensure that the specifications, shapes and sizes of the steel bars meet the design requirements; Step 5: Tie the steel bar skeleton at the position of the pile inter-slab. The spacing, quantity and anchorage length of the steel bars shall be implemented according to the design requirements. Tie them firmly with iron wire and fix them by spot welding when necessary to ensure that the steel bars do not shift during the concrete pouring process. Set pads between the steel bars and the formwork to ensure that the thickness of the steel bar protective layer meets the requirements. Step 6: Use component G to connect and install the concrete pile, and connect and install it with component F. Component F uses component E to connect and fix the non-disassembly cement fiber board D to ensure that the cement fiber board D does not move or deform during the concrete pouring process; Step 7: Component B is extended and connected with C, and the concrete of the pile slab is poured through component A; Step 8: Before pouring concrete, check the installation of steel bars and the fixation of formwork again to ensure that they meet the requirements; at the same time, check the mix ratio and slump of the concrete, and control the slump within an appropriate range to ensure the fluidity and construction performance of the concrete; Step 9: During the pouring process, measure the pouring height of concrete at any time to ensure that it reaches the designed elevation; when approaching the designed elevation, slow down the pouring speed and accurately control the pouring height to avoid over-pouring or under-pouring; Step 10: After the concrete is poured, moisturizing maintenance should be carried out in time. You can cover it with plastic film or sprinkle water to keep the concrete surface moist.

[0009] Furthermore, in the step nine, the concrete pouring adopts the layered pouring method, and the pouring thickness of each layer should not be too large, generally controlled at about 300-500mm, so as to facilitate the vibration and compaction of the concrete and avoid the phenomenon of missed vibration and over-vibration.

[0010] Compared with the existing technology, the advantages of the present invention are: it can complete the pouring in one time, eliminate the formwork removal process, save manpower and time costs, avoid removal damage, and solve the problems of difficult construction at the joint of the crown beam and the plate in the traditional process, poor pouring quality, easy water seepage, etc. By optimizing the construction process, the one-time pouring quality of the pile plate is effectively improved, the stability and safety of the building structure are enhanced, and it has significant economic benefits and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 It is a schematic diagram of the assembly operation of the present invention; Figure 2 It is a schematic diagram of component A of the present invention; Figure 3 It is a schematic diagram of component B of the present invention; Figure 4 It is a schematic diagram of component C of the present invention; Figure 5 It is a schematic diagram of component D of the present invention; Figure 6 It is a schematic diagram of component E of the present invention; Figure 7 It is a schematic diagram of component F of the present invention; Figure 8 It is a schematic diagram of component G of the present invention; Fig. 9 It is a schematic diagram of fixing the embedded sleeve of the present invention.

[0013] Markings in the figure: 1-component A, 2-component B, 3-component C, 4-component D, 5-component E, 6-component F, 7-component G, 8-concrete crown beam, 9-concrete bored pile, 10-fixed steel bar, 11-casting hole, 12-water stop fixed plate, 13-steel bar slot, 14-hopper, 15-lifting ring, 16-casting pipe, 17-external thread, 18-internal thread, 19-upper slot, 20-lower slot, 21-steel bar connection hole, 22-bendable folding piece, 23, connecting thread. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] See also Figure 1-9 , a formwork-free pile-slab structure, comprising a member A1, a member B2, a member C3, a member D4, a member E5, a member F6, a member G7, a concrete crown beam 8, a concrete cast-in-place pile 9, and a fixed steel bar 10; The component A1 has a casting hole 11, a water stop fixing plate 12 and a steel bar slot 13 in the middle; The component B2 has a hopper 14, a lifting ring 15 at the upper diagonal end, a pouring pipe 16 at the lower end, and an external thread 17 at the bottom end of the pouring pipe 16; The upper end of the component C3 has an inner thread 18, which cooperates with the outer thread 17 of the component B2 to connect and extend the installation; The component D4 is a cement fiber board; The cross section of the component E5 is rectangular, and the upper end and the lower end of the component E5 are respectively provided with an upper slot 19 and a lower slot 20; The cross section of the member F6 is square, with a steel bar connection hole 21 on the back of the member F6 and a bendable folding piece 22 on the front; The component G7 has a connecting thread 23, which is connected and installed in cooperation with the steel bar connecting hole 21 on the component F6; The component G7 is installed on the concrete pile 9 by drilling a hole on the concrete pile 9 or prefabricating; the component G7 is connected and installed in coordination with the component F6; the component D4 is fixed in the slot of the component F6 by self-tapping screws; the middle part of the component A1 is installed in coordination with the fixed steel bar 10 of the concrete crown beam 8; the component B2 is installed in coordination with the component C3 for extension; multiple components D4 are connected and installed through multiple components E5; and the pile slab concrete is poured from the hopper 14 at the upper end of the component A1.

[0016] The component F6 is a connecting clip, and the component F6 is installed with the component G7 through the steel bar connecting hole 21; the component F6 is connected and installed with the component D4 through the bendable folding piece 22.

[0017] The length of the component E5 is consistent with that of the component D4 ; the component D4 and the component E5 are connected and installed by means of an upper clamping groove 19 and a lower clamping groove 20 .

[0018] The component B2 vertically connects multiple components C3 to extend the hopper and the pipe fittings to ensure the pouring of concrete for the pile slab.

[0019] The above-mentioned construction method of the formwork-free pile-slab structure first prepares the components A, B, C, D, E, F and G required for pouring the pile-slab as required, and then operates according to the following steps: Step 1: Prepare concrete that meets the design strength grade requirements, and conduct quality inspections on cement, aggregates, and admixtures to ensure that all indicators are qualified; at the same time, prepare cement fiberboard, and check the size, flatness, and strength of the cement fiberboard. The surface should be flat and smooth without deformation or damage; Step 2: Clean the site between the piles to ensure that there are no debris or obstacles; accurately measure and lay out the lines according to the designed position of the pile slab, and mark the template installation position and steel bar layout position; Step 3: Debug concrete mixing equipment, transport vehicles, and vibrating equipment to ensure that the equipment operates normally and meets construction requirements; Step 4: Straighten, cut and bend the steel bars according to the design drawings to ensure that the specifications, shapes and sizes of the steel bars meet the design requirements; Step 5: Tie the steel bar skeleton at the position of the pile inter-slab. The spacing, quantity and anchorage length of the steel bars shall be implemented according to the design requirements. Tie them firmly with iron wire and fix them by spot welding when necessary to ensure that the steel bars do not shift during the concrete pouring process. Set pads between the steel bars and the formwork to ensure that the thickness of the steel bar protective layer meets the requirements. Step 6: Use component G7 to connect and install the concrete pile 9, and connect and install it with component F6. Component F6 uses component E5 to connect and fix the non-disassembly cement fiber board D4 to ensure that the cement fiber board D4 does not move or deform during the concrete pouring process; Step 7: Component B2 is extended and connected using C3, and the inter-pile slab concrete is poured through component A1; Step 8: Before pouring concrete, check the installation of steel bars and the fixation of formwork again to ensure that they meet the requirements; at the same time, check the mix ratio and slump of the concrete, and control the slump within an appropriate range to ensure the fluidity and construction performance of the concrete; Step 9: During the pouring process, measure the pouring height of concrete at any time to ensure that it reaches the designed elevation; when approaching the designed elevation, slow down the pouring speed and accurately control the pouring height to avoid over-pouring or under-pouring; Step 10: After the concrete is poured, moisturizing maintenance should be carried out in time. You can cover it with plastic film or sprinkle water to keep the concrete surface moist.

[0020] Furthermore, in the step nine, the concrete pouring adopts the layered pouring method, and the pouring thickness of each layer should not be too large, generally controlled at about 300-500mm, so as to facilitate the vibration and compaction of the concrete and avoid the phenomenon of missed vibration and over-vibration.

[0021] Compared with the existing technology, the advantages of the present invention are: it can complete the pouring in one time, eliminate the formwork removal process, save manpower and time costs, avoid removal damage, and solve the problems of difficult construction at the joint of the crown beam and the plate in the traditional process, poor pouring quality, easy water seepage, etc. By optimizing the construction process, the one-time pouring quality of the pile plate is effectively improved, the stability and safety of the building structure are enhanced, and it has significant economic benefits and practical value.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit of the technical solutions of the embodiments of the present invention.

Claims

1. A formwork-free pile-slab structure, characterized in that: It includes component A (1), component B (2), component C (3), component D (4), component E (5), component F (6), component G (7), concrete crown beam (8), concrete cast-in-place pile (9), and fixed steel bars (10); The component A (1) has a casting hole (11), a water-stop fixing plate (12) and a steel bar slot (13) in the middle; The component B (2) has a hopper (14), a lifting ring (15) at the diagonal top, a pouring pipe (16) at the bottom, and an external thread (17) at the bottom of the pouring pipe (16); The upper end of the component C (3) is provided with an inner thread (18), which cooperates with the outer thread (17) of the component B (2) to be connected, installed and extended; The component D (4) is a cement fiber board; The cross section of the component E (5) is rectangular, and the upper end and the lower end of the component E (5) are respectively provided with an upper groove (19) and a lower groove (20); The cross section of the member F (6) is square, and the back of the member F (6) has a steel bar connection hole (21) and the front has a bendable folding piece (22); The component G (7) is provided with a connecting thread (23), and the connecting thread (23) cooperates with the steel bar connecting hole (21) on the component F (6) for connection and installation; The component G (7) is installed on the concrete cast-in-place pile (9) by drilling a hole on the concrete cast-in-place pile (9) or prefabricating; the component G (7) is connected and installed in cooperation with the component F (6); the component D (4) is fixed in the slot of the component F (6) by self-tapping screws; the middle part of the component A (1) is installed in cooperation with the fixed steel bar (10) of the concrete crown beam (8); the component B (2) is installed in cooperation with the component C (3) for extension; a plurality of components D (4) are connected and installed in cooperation with a plurality of components E (5); and the inter-pile slab concrete is poured from the hopper (14) at the upper end of the component A (1).

2. The formwork-free pile-slab structure according to claim 1, characterized in that: The component F (6) is a connecting clamp, and the component F (6) is installed with the component G (7) through the steel bar connecting hole (21); the component F (6) is connected and installed with the component D (4) through the bendable folding piece (22).

3. The formwork-free pile-slab structure according to claim 1, characterized in that: The length of the component E (5) is consistent with the length of the component D (4); the component D (4) and the component E (5) are connected and installed through the upper clamping groove (19) and the lower clamping groove (20).

4. The formwork-free pile-slab structure according to claim 1, characterized in that: The component B (2) vertically connects multiple components C (3).

5. A construction method for a formwork-free pile-slab structure according to any one of claims 1 to 4, characterized in that: First, prepare the components A, B, C, D, E, F and G required for pouring the pile slab as required, and then follow the steps below: Step 1: Prepare concrete that meets the design strength grade requirements and conduct quality inspections on cement, aggregates, and admixtures; prepare cement fiberboard and check its size, flatness, and strength; Step 2: Clean the area between the piles to ensure that there are no debris or obstacles; accurately measure and lay out the lines according to the designed position of the pile slab, and mark the template installation position and steel bar layout position; Step 3: Debug concrete mixing equipment, transport vehicles, and vibrating equipment to ensure that the equipment operates normally and meets construction requirements; Step 4: Straighten, cut and bend the steel bars according to the design drawings to ensure that the specifications, shapes and sizes of the steel bars meet the design requirements; Step 5: Tie the steel bar skeleton at the position of the pile inter-slab. The spacing, quantity and anchorage length of the steel bars shall be implemented according to the design requirements. Tie them firmly with iron wire and fix them by spot welding when necessary to ensure that the steel bars do not shift during the concrete pouring process. Set pads between the steel bars and the formwork to ensure that the thickness of the steel bar protective layer meets the requirements. Step 6: Connect and install the component G (7) to the concrete pile (9) and connect and install it with the component F (6). The component F (6) uses the component E (5) to connect and fix the non-disassembly cement fiber board D (4) to ensure that the cement fiber board D (4) does not move or deform during the concrete pouring process; Step 7: Component B (2) is extended and connected using C (3), and the inter-pile slab concrete is poured through component A (1); Step 8: Before pouring concrete, check the installation of steel bars and the fixation of formwork again to ensure that they meet the requirements; at the same time, check the mix ratio and slump of the concrete, and control the slump within an appropriate range to ensure the fluidity and construction performance of the concrete; Step 9: During the pouring process, measure the pouring height of concrete at any time to ensure that it reaches the designed elevation; when approaching the designed elevation, slow down the pouring speed and accurately control the pouring height to avoid over-pouring or under-pouring; Step 10: After the concrete is poured, moisturizing maintenance should be carried out in time. You can cover it with plastic film or sprinkle water to keep the concrete surface moist.

6. A construction method for a formwork-free pile-slab structure as claimed in claim 5, characterized in that: In the step nine, the concrete is poured in layers, and the thickness of each layer is controlled at 300-500 mm, so as to facilitate the compaction of the concrete and avoid vibration leakage and over-vibration.

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