Early-dismantling support structure for a composite floor

Abstract

The utility model relates to a kind of early-dismantling support structures of superimposed floor, belong to the field of construction engineering, it includes vertical support, horizontal support and formwork;The vertical support is set in the gap between adjacent superimposed board both sides and is supported below superimposed board, including lower column, upper column, adjusting nut, backing plate and early-dismantling head, lower column is connected by screw with upper column, adjusting nut is threadedly connected in the top of upper column, backing plate is installed in the top of adjusting nut, early-dismantling head is connected in the top of backing plate, upper column is connected with early-dismantling head and passes through backing plate;The horizontal support includes interval arrangement main ridge and variable cross section main ridge, both ends of main ridge and variable cross section main ridge are all overlapped in the top of backing plate, main ridge is used to support superimposed board, and variable cross section main ridge is used to place formwork.The utility model structure is good in integrity, stress is uniform, and it is convenient and fast to install and dismantle, quality safety is double controllable, with remarkable economic benefits and social benefits.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering, and in particular relates to an early stripping support structure for composite floor slabs, which is suitable for the construction of composite floor slabs. Background Technology

[0002] Traditional construction methods for composite floor slabs typically employ independent steel supports, beam supports, timber, and stable tripods as the support structure. When using this support structure, the longitudinal and transverse main ribs are not on the same plane, making it difficult to control the flatness of the slab surface. Furthermore, the lack of horizontal bracing between each support structure poses a risk of overall instability. Additionally, because cast-in-place slabs have formwork at the bottom, the bottom of the precast composite slab is at a different elevation than the formwork, resulting in uneven stress on the main ribs of the support structure and poor safety. Moreover, the construction process is time-consuming and labor-intensive, increasing both the construction period and costs.

[0003] Therefore, in order to effectively solve the above problems, it is urgent to design a new type of early-stripping support structure for composite floor slabs, which ensures good overall structure, uniform stress distribution, convenient and quick installation and dismantling, and controllable quality and safety. Utility Model Content

[0004] The purpose of this utility model is to provide an early-stripping support structure for composite floor slabs to solve the problems of poor overall support structure, uneven stress, inconvenient installation and dismantling, poor safety, and time-consuming and labor-intensive construction process, which increases the construction period and cost.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model relates to an early stripping support structure for composite floor slabs, used to support composite slabs and cast-in-place slabs during construction. It includes vertical supports, horizontal supports, and formwork. The vertical supports are located on both sides of the gap between adjacent composite slabs and support the composite slabs below. Each vertical support includes a lower column, an upper column, an adjusting nut, a support plate, and an early stripping head. The lower column and upper column are threaded together. The adjusting nut is threaded to the top of the upper column. The support plate is installed above the adjusting nut. The early stripping head is engaged above the support plate. The upper column passes through the support plate and is connected to the early stripping head. The horizontal supports include spaced main ribs and variable cross-section main ribs. Both ends of the main ribs and variable cross-section main ribs overlap the support plate. The main ribs support the composite slabs, and the variable cross-section main ribs are located below the gap between adjacent composite slabs and are used to place the formwork.

[0007] Preferably, the middle part of the variable cross-section main rib is a groove formed by a smaller cross-section, the depth of the groove is the same as the thickness of the template, and the cross-sections at both ends of the variable cross-section main rib are the same as the cross-section of the main rib; the template is placed in the groove.

[0008] Preferably, the template has filler material on both sides, which is used to fill the gap between the template and the side walls of the groove.

[0009] Preferably, the upper surface of the tray is provided with a slot, and the ends of the main rib and the variable cross-section main rib are engaged in the slot; a hole is provided in the middle of the tray, and the upper column passes through the hole through the tray.

[0010] Preferably, the lower surface of the early removal head is provided with a positioning groove, and the gap between adjacent positioning grooves matches the outer contour of the slot, so that the early removal head and the support plate are engaged through the positioning groove and the slot.

[0011] Preferably, the upper column has threads at both ends, and the bottom thread is connected to the top thread of the lower column. A threaded sleeve is provided at the center of the lower surface of the early removal head, and the early removal head is connected to the top thread of the upper column through the threaded sleeve.

[0012] This utility model has the following features and beneficial effects:

[0013] The vertical support of the early stripping support structure for composite floor slabs involved in this utility model includes a support plate, and the horizontal support includes main ribs and variable cross-section main ribs arranged at intervals. The two ends of the main ribs and variable cross-section main ribs overlap on the support plate, which can ensure that all main ribs and variable cross-section main ribs are on the same plane, resulting in high slab flatness, more reasonable stress distribution, and meeting the load-bearing capacity requirements.

[0014] The precast composite slab early stripping support structure of this utility model adopts a special design of variable cross-section main ribs at the bottom of the cast-in-place slab, and the template is placed in the groove of the variable cross-section main ribs to ensure that the templates of the precast composite slab and the cast-in-place slab are at the same elevation, ensuring that the overall support structure is uniformly stressed and has high safety; in addition, the variable cross-section main ribs can provide positioning and fixing function for the template, which facilitates the installation of the template.

[0015] The early-stripping support structure for composite floor slabs involved in this utility model uses an early-stripping head, a support plate, and an adjusting nut. The adjusting nut enables the support plate to rise and fall, facilitating the installation and removal of the main ribs and allowing for early stripping of the support structure. The entire early-stripping support structure is simple to operate and improves the utilization efficiency of the support structure components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the elevation of the early stripping support structure for composite floor slabs;

[0017] Figure 2 This is a schematic diagram of the main rib with variable cross-section;

[0018] Figure 3 It is an early head-down view;

[0019] Figure 4 It is attached Figure 3AA section diagram;

[0020] Figure 5 This is a top view of the pallet;

[0021] Figure 6 It is attached Figure 5 BB cross-sectional view.

[0022] In the diagram: 1. Lower column, 2. Upper column, 3. Adjusting nut, 4. Support plate, 41. Support plate body, 42. Slot, 43. Hole, 5. Variable cross-section main rib, 51. Groove, 6. Main rib, 7. Early stripping head, 71. Threaded sleeve, 72. Top plate, 73. Positioning groove, 8. Template, 9. Filler, 10. Composite plate, 11. Cast-in-place slab. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are for the purpose of explaining the present invention and are not limited to the following embodiments.

[0024] In this embodiment, a frame and frame-shear wall structure is used, and the above-ground floor slab system is a composite floor slab, namely a 60mm composite slab (10) + a 70mm cast-in-place slab (11). The standard length of the composite slab (10) is 3200mm and the width is 1800mm. The width of the cast-in-place part between the composite slabs (10) is 500mm. The composite floor slab support system adopts a composite floor slab early stripping support structure involved in this utility model.

[0025] like Figure 1 As shown, the present invention relates to an early stripping support structure for composite floor slabs, comprising vertical supports, horizontal supports, and a template 8. The vertical supports are positioned on both sides of the gap between adjacent composite slabs 10 and support the composite slabs 10 below them. The vertical supports include a lower column 1, an upper column 2, an adjusting nut 3, a support plate 4, and an early stripping head 7. The lower column 1 is a steel pipe with a length of 1800mm, a wall thickness of 2.75mm, and an outer diameter of 60mm. The upper column 2 is a threaded rod with a length of 1m and an outer diameter of 48mm. Both ends of the upper column 2 are threaded. The thread at the bottom of the lower column 1 is threadedly connected to the upper column 2. The adjusting nut 3 is threadedly connected to the threaded connection at the top of the upper column 2. The support plate 4 is installed above the adjusting nut 3, and its raising and lowering can be controlled by adjusting the height of the adjusting nut 3. The early removal head 7 is snapped onto the top of the support plate 4, and the upper column 2 passes through the support plate 4 and is connected to the early removal head 7; the horizontal support includes the main ribs 6 and variable cross-section main ribs 5 arranged at intervals. The two ends of the main ribs 6 and variable cross-section main ribs 5 overlap the top of the support plate 4. The main ribs 6 are used to support the composite plate 10, and the variable cross-section main ribs 5 are arranged below the gap between adjacent composite plates 10 and are used to place the template 8.

[0026] See attached document Figure 1 and 2 As shown, both the variable cross-section main ribs 5 and 6 are made of square steel or aluminum tubing. The main rib 6 has a size of 50mm × 50mm. The two ends of the variable cross-section main rib 5 have a cross-sectional size of 50mm × 50mm, and the middle part is a groove 51 formed by a smaller cross-sectional size, which is 40mm × 40mm. The template thickness can be 10mm plywood. The depth of the groove 51 formed by the smaller cross-section is the same as the thickness of the template 8. The width of the template 8 is greater than the width of the gap between adjacent composite plates 10, and less than or equal to the width of the groove 51. The template 8 is placed in the groove 51. Since the template 8 is generally smaller than the width of the groove 51, filler material 9 is provided on both sides of the template 8 to fill the gap between the template 8 and the side walls of the groove 51.

[0027] See attached document Figure 5 and 6 As shown, the pallet 4 uses a steel or aluminum plate as its body 41, and is a 200mm × 200mm square plate. I-beam steel or aluminum plates are welded to the upper surface of the four perimeters of the pallet body 41 to form a slot 42. The inner cross-sectional width of the slot 42 is 45mm, the height is 50mm, and the cross-section of the slot 42 is U-shaped. The ends of the main rib 6 and the variable cross-section main rib 5 are engaged within the slot 42. A hole 43 with an inner diameter of 50mm is provided in the middle of the pallet 4, allowing the upper column 2 to pass through the hole 43 through the pallet 4.

[0028] See attached document Figure 3 and 4 As shown, the top plate 72 of the early removal head 7 is made of 5mm thick steel or aluminum plate, and is a square plate with dimensions of 200mm×200mm. L-shaped steel or aluminum plates are welded to the four corners of the lower surface of the top plate 72 to form positioning grooves 73. The inner cross-sectional width of the positioning groove 73 is 60mm and the height is 50mm, which perfectly matches the gap between adjacent positioning grooves 73 and the outer contour of the slot 42, allowing the early removal head 7 and the support plate 4 to be engaged through the positioning grooves 73 and the slot 42. A threaded sleeve 71 is provided at the center of the lower surface of the top plate 72, and the early removal head 7 is threadedly connected to the top of the upper column 2 through the threaded sleeve 71.

[0029] When erecting the aforementioned early stripping support structure for the composite floor slab, first connect the upper columns 2 sequentially to the top of the corresponding lower columns 1, then connect the adjusting nuts 3 sequentially to the top of the corresponding upper columns 2 and place the corresponding support plates 4; then, erect the main ribs 6 and variable cross-section main ribs 5 sequentially in the slots 42 of the support plates 4, install early stripping heads 7 above each support plate 4, and use the positioning slots 73 of the early stripping heads 7 to engage with the slots 42 of the support plates 4, thus securing the main ribs 6 and variable cross-section main ribs 5; then, place the template 8 in the groove 51 of the variable cross-section main rib 5, and fill the gap between the template 8 and the groove 51 with filler material 9 to fix the template 8; finally, hoist the composite slab 10 and pour the cast-in-place slab 11.

[0030] When the early-stripping support structure of the aforementioned composite floor slab is removed, when the concrete strength of the cast-in-place slab 11 reaches about 60%, the adjusting nut 3 is adjusted to lower it, and the support plate 4 loses its support and lowers synchronously. At this time, the main rib 6, the variable cross-section main rib 5, and the formwork 8 are removed. The vertical support composed of the lower column 1, the upper column 2, and the early-stripping head 7 is not removed and is used to support the composite slab 10. The removed main rib 6, the variable cross-section main rib 5, and the formwork 8 can be used for the construction of composite floor slabs in other locations. When the concrete strength of the cast-in-place slab 11 reaches 100%, the height of the early-stripping head 7 is lowered by adjusting the upper column 2, and the lower column 1, the upper column 2, and the early-stripping head 7 are removed.

[0031] The present invention has been described in detail above with reference to the embodiments. However, the description is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A composite floor slab early stripping support structure, used to support the composite slab (10) and the cast-in-place slab (11) during the construction of the composite floor slab, characterized in that: It includes vertical supports, horizontal supports, and templates (8); the vertical supports are set on both sides of the gap between adjacent composite plates (10) and supported below the composite plates (10). The vertical supports include a lower column (1), an upper column (2), an adjusting nut (3), a support plate (4), and an early removal head (7). The lower column (1) and the upper column (2) are connected by threads. The adjusting nut (3) is threaded to the top of the upper column (2). The support plate (4) is installed on the adjusting nut (3). Above the tray (4), the early removal head (7) is snapped onto the tray (4), and the upper column (2) passes through the tray (4) and is connected to the early removal head (7); the horizontal support includes the main rib (6) and the variable cross-section main rib (5) arranged at intervals. The two ends of the main rib (6) and the variable cross-section main rib (5) overlap the tray (4). The main rib (6) is used to support the composite plate (10), and the variable cross-section main rib (5) is set below the gap between adjacent composite plates (10) and is used to place the template (8).

2. The early stripping support structure for composite floor slabs according to claim 1, characterized in that: The variable cross-section main rib (5) has a groove (51) formed by a smaller cross-section in the middle. The depth of the groove (51) is the same as the thickness of the template (8). The cross-sections at both ends of the variable cross-section main rib (5) are the same as the cross-sections of the main rib (6). The template (8) is placed in the groove (51).

3. The early stripping support structure for composite floor slabs according to claim 2, characterized in that: The template (8) is provided with filler (9) on both sides, and the filler (9) is used to fill the gap between the template (8) and the side walls of the groove (51).

4. The composite floor slab early stripping support structure according to claim 1, characterized in that: The upper surface of the tray (4) is provided with a slot (42), and the ends of the main rib (6) and the variable cross-section main rib (5) are engaged in the slot (42); a hole (43) is provided in the middle position of the tray (4), and the upper column (2) passes through the tray (4) through the hole (43).

5. The early stripping support structure for composite floor slabs according to claim 4, characterized in that: The lower surface of the early removal head (7) is provided with a positioning groove (73), and the gap between adjacent positioning grooves (73) matches the outer contour of the slot (42), so that the early removal head (7) and the support plate (4) are engaged through the positioning groove (73) and the slot (42).

6. The early stripping support structure for composite floor slabs according to claim 1, characterized in that: The upper column (2) is threaded at both ends, and the bottom thread is connected to the top thread of the lower column (1); the early removal head (7) is provided with a threaded sleeve (71) at the center of the lower surface, and the early removal head (7) is connected to the top thread of the upper column (2) through the threaded sleeve (71).

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