Aluminum-wood combined structure for floor pouring

Abstract

The utility model relates to the technical field of building construction, in particular to an aluminum-wood combined structure for floor pouring, which comprises an aluminum template group and a wood template group, the aluminum template group is arranged at the lower part of a floor wall body, the wood template group is connected with the aluminum template group, the lower part of the wood template group is connected with a supporting mechanism, and the wood template group is connected with the supporting mechanism. The supporting mechanisms are connected with the ground and evenly distributed below the wood formwork set, the middle of the aluminum formwork and wood formwork connecting structure is supported and strengthened on the basis of an existing aluminum formwork and wood formwork connecting structure, the deformation possibility in the pouring process is reduced, and the aluminum formwork and wood formwork connecting structure can be suitable for concrete pouring of floors, especially top floors. By the adoption of the structure of the double aluminum formworks and the double wood formworks, the functions of the two aluminum formworks do not interfere with each other, one aluminum formwork is used for pouring a wall, the other aluminum formwork is used for limiting the wood formworks, meanwhile, the supporting effect during pouring is improved through the two wood formworks, and downward force transmitted from the upper portion and upward force transmitted from the lower portion can be better released.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically an aluminum-wood composite structure for floor pouring. Background Technology

[0002] In construction, the combined application of aluminum alloy formwork and wooden formwork (i.e., "aluminum-wood combination") forms a unique value matrix through the complementary properties of the materials. From an economic perspective, the unit price of wooden formwork is only one-tenth that of aluminum alloy formwork, and its hot-pressed plywood substrate allows construction teams to complete irregular shapes within 5 minutes using a handheld circular saw, making it particularly suitable for non-standard parts such as curved walls with a radius of curvature of less than 2m and beam-column joints with an oblique angle of more than 15°.

[0003] For example, in the construction of the top floor of high-rise buildings, when complex shapes such as curved bay windows and relief decorative lines are involved, wooden formwork can achieve millimeter-level contour fitting through on-site layout, while aluminum alloy formwork is difficult to implement due to the high cost of mold making (the cost of a single irregular formwork mold exceeds 10,000 yuan). At the same time, the weight of a single wooden formwork piece (about 12 kg / ㎡) is 52% lower than that of aluminum alloy formwork (25 kg / ㎡). In tower crane coverage blind spots or secondary structure construction, workers can carry and assemble it by themselves, effectively improving work efficiency. From the perspective of concrete forming quality, the 3%-5% water absorption rate of wooden formwork can absorb the bleeding water on the surface of freshly poured concrete. After demolding, it can meet the flatness requirements of GB50204 "Code for Acceptance of Construction Quality of Concrete Structures" without secondary grinding, saving at least 2 hours of surface treatment process per layer compared with aluminum alloy formwork.

[0004] Therefore, in actual engineering projects, a layered combined construction strategy is often adopted: the "wooden formwork + disc-lock scaffolding" system is implemented on the 1st to 7th standard floors to control the construction cycle of each floor within 5 days; while in the complex areas of the top floor, the "aluminum-wood composite + attached lifting scaffolding" scheme is implemented. For straight walls, 600mm modular aluminum alloy formwork is used to ensure construction accuracy, and 12mm thick wooden formwork is used to shape irregular structures on site. Combined with the overall lifting scaffolding, the risk of high-altitude operations is reduced by 40%.

[0005] However, the aluminum-wood composite system has inherent defects in terms of mechanical synergy. Existing technologies mostly focus on strengthening the connection nodes, but neglect the problem of abrupt changes in system stiffness caused by the difference in elastic modulus between the two (aluminum alloy 70GPa vs. wood 11GPa). In actual construction, when the support spacing exceeds 800mm, the deformation coordination rate between the aluminum alloy formwork area and the wooden formwork area is less than 60%, resulting in a 3-5mm formwork bulge difference after concrete pouring. Utility Model Content

[0006] The purpose of this utility model is to provide an aluminum-wood composite structure for floor pouring, addressing the aforementioned problems.

[0007] The technical solution adopted by this utility model is as follows: an aluminum-wood composite structure for floor pouring, including an aluminum formwork group and a wooden formwork group. The aluminum formwork group is located at the lower part of the floor wall, and the wooden formwork group is connected to the aluminum formwork group. The lower part of the wooden formwork group is connected to a support mechanism, and the support mechanism is connected to the ground. The support mechanisms are evenly distributed below the wooden formwork group.

[0008] Optionally, the timber formwork assembly includes timber formwork and timber square boards;

[0009] The wooden template is located above the wooden square board;

[0010] The wooden planks are connected to the support mechanism.

[0011] Optionally, the aluminum template assembly includes a first aluminum template and a second aluminum template;

[0012] The first aluminum formwork is positioned above the second aluminum formwork, and the first aluminum formwork is connected to the floor wall.

[0013] The second aluminum template is used to limit the wooden template and wooden square board.

[0014] Optionally, the cross-sections of the first and second aluminum templates are "L" shaped, and the ends of the wooden templates and wooden square boards can be inserted into the second aluminum template.

[0015] Optionally, the end of the wooden template is connected to the second aluminum template by a first rivet that penetrates the side wall of the second aluminum template, and the end of the wooden template is connected to the first aluminum template by a connecting bolt that penetrates the lower part of the first aluminum template;

[0016] The end of the wooden board is connected to the second aluminum template by a second rivet that passes through the lower part of the second aluminum template.

[0017] Optionally, the upper part of the wooden board is provided with a groove, and the end of the connecting bolt can pass through the wooden template and be inserted into the groove.

[0018] Optionally, the support mechanism includes steel pipes, wooden formwork supports, and steel pipe frames;

[0019] The steel pipe is located below the wooden board;

[0020] The wooden mold top support is located below the steel pipe and can limit the movement of the steel pipe;

[0021] The steel pipe frame is located below the wooden formwork support. One end of the steel pipe frame is detachably connected to the wooden formwork support, and the other end of the steel pipe frame is connected to the ground.

[0022] Optionally, the vertical projection of the steel pipe is perpendicular to the vertical projection of the wooden board.

[0023] Optionally, the wooden mold top support is limited by two steel pipes arranged side by side.

[0024] Optionally, the bottom of the wooden mold top support is provided with a screw rod, which is detachably connected to the end of the steel pipe frame.

[0025] The beneficial effects of this utility model include at least one of the following;

[0026] 1. An aluminum-wood composite structure for floor pouring is provided. Based on the existing aluminum formwork and wood formwork connection structure, the middle is reinforced to reduce the possibility of deformation during the pouring process. It is suitable for floor pouring, especially the top floor.

[0027] 2. By adopting a structure of double aluminum formwork and double wooden formwork, the functions of the two aluminum formworks do not interfere with each other. One is used for pouring the wall, and the other is used to limit the wooden formwork. At the same time, the two wooden formworks improve the support effect during pouring and can better mitigate the downward force transmitted from the top and the upward force transmitted from the bottom. Attached Figure Description

[0028] Figure 1 A schematic diagram of an aluminum-wood composite structure used for floor pouring;

[0029] Figure 2 This is a schematic diagram showing the connection between the wooden formwork assembly and the supporting structure.

[0030] Figure 3 This is a schematic diagram of the connection structure between the wooden formwork assembly and the aluminum formwork assembly;

[0031] Figure 4 This is a schematic diagram of the first state of connection between the wooden formwork assembly and the aluminum formwork assembly.

[0032] Figure 5 This is a schematic diagram of the second state of connection between the wooden formwork assembly and the aluminum formwork assembly.

[0033] In the picture:

[0034] 1 is the floor wall, 2 is the aluminum formwork assembly, 3 is the wooden formwork assembly, 4 is the steel pipe, 5 is the wooden formwork top support, 6 is the screw rod, 7 is the steel pipe frame, 8 is the first aluminum formwork, 9 is the second aluminum formwork, 10 is the wooden formwork, 11 is the wooden square board, 12 is the first rivet, 13 is the second rivet, 14 is the placement groove, 15 is the connecting bolt, 16 is the first limiting piece, 17 is the second limiting piece, and 18 is the groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] like Figure 1As shown, an aluminum-wood composite structure for floor pouring includes an aluminum formwork group 2 and a wooden formwork group 3. The aluminum formwork group 2 is located at the lower part of the floor wall 1, and the wooden formwork group 3 is connected to the aluminum formwork group 2. The wooden formwork group 3 is connected to a support mechanism at its lower part and is connected to the ground. The support mechanisms are evenly distributed below the wooden formwork group 3.

[0042] The purpose of this design is to provide an aluminum-wood composite structure for floor pouring. Based on the existing aluminum formwork and wood formwork connection structure, the middle part is reinforced to reduce the possibility of deformation during the pouring process, making it suitable for floor pouring, especially the top floor.

[0043] It should be noted that the floor wall referred to in this embodiment is a broad concept, which can be a wall structure that has been poured, or a wall or wall surface to be poured after the frame has been built.

[0044] In this embodiment, the wooden formwork group 3 includes a wooden formwork 10 and a wooden square board 11;

[0045] The wooden template 10 is located above the wooden square board 11;

[0046] The wooden board 11 is connected to the support mechanism.

[0047] Meanwhile, aluminum formwork group 2 includes a first aluminum formwork 8 and a second aluminum formwork 9;

[0048] The first aluminum formwork 8 is positioned above the second aluminum formwork 9, and the first aluminum formwork 8 is connected to the floor wall 1;

[0049] The second aluminum template 9 is used to limit the wooden template 10 and the wooden square board 11.

[0050] The purpose of this design is to ensure that the two aluminum formworks do not interfere with each other by using a structure of double aluminum formwork and double wooden formwork. One aluminum formwork is used for pouring the wall, and the other is used to limit the wooden formwork. At the same time, the two wooden formworks improve the support effect during pouring and can better mitigate the downward force transmitted from the top and the upward force transmitted from the bottom.

[0051] Furthermore, in specific connection structures, such as Figures 3 to 5 As shown, the cross-section of the first aluminum template 8 and the second aluminum template 9 is "L" shaped. The ends of the wooden template 10 and the wooden square board 11 can be inserted into the second aluminum template 9. The end of the wooden template 10 is connected to the second aluminum template 9 by the first rivet 12 that penetrates the side wall of the second aluminum template 9. The end of the wooden template 10 is connected to the first aluminum template 8 by the connecting bolt 15 that penetrates the lower part of the first aluminum template 8.

[0052] The end of the wooden board 11 is connected to the second aluminum template 9 by a second rivet 13 that passes through the lower part of the second aluminum template 9. The upper part of the wooden board 11 is provided with a groove 18, and the end of the connecting bolt 15 can pass through the wooden template 10 and be inserted into the groove 18.

[0053] The purpose of this design is to make the cross-sections of the first and second aluminum templates "L" shaped, and the right-angle structure of their inner folded edges not only provides precise guidance and positioning for the vertical insertion of the wooden templates and wooden square boards, but also reserves sufficient installation gaps through the groove space formed by the side walls.

[0054] Specifically, when the wooden formwork and wooden square board are embedded, the two folded edges of the "L"-shaped aluminum formwork can effectively constrain lateral displacement, while the reserved gap on the inner side of the folded edge creates operating space for the installation of rivets or connecting bolts, enabling construction workers to quickly complete the fastening operation with the help of conventional tools, avoiding installation angle deviation or fastener deformation caused by insufficient space.

[0055] Meanwhile, this cross-sectional design, through the symmetrical "L" shape combination, forms a continuous mechanical support channel in the longitudinal direction, which significantly improves the overall bending resistance of the template assembly.

[0056] For the end connection between the aluminum formwork assembly and the wooden formwork assembly, a three-dimensional fixing strategy is adopted: First, the first rivet penetrates the aluminum-wood interface from the right side, and the horizontal sliding of the wooden formwork is restricted by the biting force between the rivet head and the side wall of the aluminum formwork.

[0057] Secondly, connecting bolts with elastic washers are installed at the top. By applying pre-tightening force, the wooden formwork is vertically pressed onto the top surface of the aluminum formwork, which not only eliminates the assembly gap between components, but also disperses the vertical load generated during concrete pouring.

[0058] Finally, a second rivet penetrates the bottom of the wooden board and the lower edge of the aluminum template, forming a "supporting" mechanical structure to prevent the wooden board from falling off due to its own weight or vibration. This three-way fixing system, through the coupling of constraint forces in different directions, enables the connection node to remain stable when subjected to shear force, pull-out force, and torsional force. Finite element analysis has verified that its node strength is improved compared to the traditional single-point fixing method.

[0059] It is particularly important to emphasize that, since the bending strength of wooden formwork is usually only 12-15MPa, which is only one-tenth of that of aluminum formwork (150-200MPa), the second aluminum formwork adopts a fully wrapped connection design at the end. By completely embedding the wooden formwork into the U-shaped groove of the aluminum formwork, the stress mode of the wooden formwork is changed from a cantilever beam to a simply supported beam.

[0060] This structure not only reduces local stress concentration in the wooden formwork through the rigid wrapping surface of the aluminum formwork, but also directly transfers the downward impact load generated by concrete vibration to the support system through the folded edges of the aluminum formwork, thereby avoiding bulging accidents caused by brittle fracture of the wooden formwork.

[0061] Actual test data shows that after adopting this protective structure, the ultimate bearing capacity of the ends of the wooden formwork increased from the original 3.2kN to 7.8kN, and the number of times the formwork system can be reused increased by more than 3 times.

[0062] Furthermore, such as Figures 4 to 5 As shown, during the assembly of the aluminum template group and the wooden template group, the wooden template is first precisely aligned and inserted into the L-shaped placement groove 14 of the second aluminum template. At this time, a buffer gap is reserved between the bottom surface of the wooden template and the bottom of the groove to compensate for the dimensional fluctuations caused by changes in the moisture content of the wood. Then, the composite limiting structure composed of the first limiting plate 16 and the second limiting plate 17 is activated: the first limiting plate is pushed upward through the wedge-shaped teeth at its bottom, forcing the wooden template to abut against the serrated pressing surface at the top of the first aluminum template;

[0063] The second limiting piece is embedded in the side wall of the first aluminum template through the arc-shaped buckle structure of its extension end. Under the action of downward pressure, the wooden template undergoes bidirectional elastic deformation to form a three-dimensional constraint system. After mechanical pre-tightening is completed, a Φ6mm 316 stainless steel rivet is used to penetrate the side wall of the second aluminum template and nail it into the wooden template. The embossed pattern on the rivet head creates a mechanical engagement with the wooden template.

[0064] When proceeding to the second stage of connection, M12×50 high-strength connecting bolts are used, passing vertically through the countersunk holes at the top of the first aluminum formwork and the nylon bushings pre-embedded in the wooden formwork to complete the connection between the two. It should be noted that... Figure 5 In the middle, the connecting bolt overlaps with the first and second limiting plates in terms of visual field, but in reality, the two are misaligned.

[0065] After the main connection is completed, the limiting system is released in reverse order: first, the buckle constraint of the second limiting piece 17 is released using a special mold release device, and then the pre-tightening force is gradually released by rotating the first limiting piece 16 to avoid stress sudden change causing the connection surface to spring back. Then, the wooden square board is pushed in along the placement groove 14, and the pre-set groove 18 at its end forms a clearance fit with the ball end of the connecting bolt. After the wooden square board is fully embedded in the L-shaped fold of the second aluminum template, it is finally fixed in a three-point symmetrical manner using Φ5mm countersunk rivets. The provided aluminum-wood joint structure increases the overall rigidity of the aluminum-wood joint to 85% of that of a pure aluminum template connection, while the material cost is only 42% of that of a full aluminum template system.

[0066] like Figure 2 As shown, in this embodiment, the support mechanism includes a steel pipe 4, a wooden formwork top support 5, and a steel pipe frame 7;

[0067] The steel pipe 4 is located below the wooden square board 11;

[0068] The wooden mold top support 5 is located below the steel pipe 4 and can limit the movement of the steel pipe 4;

[0069] The steel pipe frame 7 is located below the wooden formwork top support 5. One end of the steel pipe frame 7 is detachably connected to the wooden formwork top support 5, and the other end of the steel pipe frame 7 is connected to the ground.

[0070] Meanwhile, the wooden mold top support 5 has two steel pipes 4 arranged side by side for inner limit.

[0071] Furthermore, the bottom of the wooden mold top support 5 is provided with a screw rod 6, which is detachably connected to the end of the steel pipe frame 7 via the screw rod 6.

[0072] The purpose of this design is to provide a structure with reinforced support in the middle, in which the steel pipes not only serve a supporting function but also allow necessary pipelines to pass through.

[0073] The wooden formwork support serves two purposes: firstly, to constrain the steel pipes, and secondly, to transmit the downward force of the wooden formwork assembly.

[0074] The steel pipe frame is used to transfer this force to the ground. At the same time, the support structure with uniform spacing can evenly transfer the downward force to the ground, thereby reducing the vertical force, especially in the middle part where the deformation coordination between the aluminum alloy formwork area and the wooden formwork area is insufficient, which leads to the phenomenon of formwork bulging difference after concrete pouring.

[0075] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An aluminum-wood combined structure for floor pouring, comprising an aluminum formwork set (2) and a wood formwork set (3), the aluminum formwork set (2) being arranged at a lower part of a floor wall (1), and the wood formwork set (3) being connected with the aluminum formwork set (2), characterized in that, The lower part of the wooden template group (3) is connected to a support mechanism, and the support mechanism is connected to the ground. The support mechanisms are evenly distributed under the wooden template group (3).

2. An aluminum-wood composite structure for floor pouring according to claim 1, wherein The wooden formwork assembly (3) includes wooden formwork (10) and wooden square boards (11); The wooden template (10) is located above the wooden square board (11); The wooden board (11) is connected to the support mechanism.

3. An aluminum-wood composite structure for floor pouring according to claim 2, wherein The aluminum template group (2) includes a first aluminum template (8) and a second aluminum template (9); The first aluminum formwork (8) is located above the second aluminum formwork (9), and the first aluminum formwork (8) is connected to the floor wall (1); The second aluminum template (9) is used to limit the wooden template (10) and the wooden square board (11).

4. The aluminum-wood composite structure for floor pouring according to claim 3, wherein The first aluminum template (8) and the second aluminum template (9) have an "L" shaped cross section, and the ends of the wooden template (10) and the wooden square board (11) can be inserted into the second aluminum template (9).

5. An aluminium-wood combined structure for floor casting according to claim 4, characterized in that, The end of the wooden template (10) is connected to the second aluminum template (9) by a first rivet (12) that penetrates the side wall of the second aluminum template (9), and the end of the wooden template (10) is connected to the first aluminum template (8) by a connecting bolt (15) that penetrates the lower part of the first aluminum template (8); The end of the wooden board (11) is connected to the second aluminum template (9) by a second rivet (13) that passes through the lower part of the second aluminum template (9).

6. An aluminum-wood composite structure for floor pouring according to claim 5, wherein The upper part of the wooden board (11) is provided with a groove (18), and the end of the connecting bolt (15) can pass through the wooden template (10) and be inserted into the groove (18).

7. An aluminum-wood composite structure for floor pouring according to claim 2, wherein The support mechanism includes a steel pipe (4), a wooden formwork top support (5), and a steel pipe frame (7); The steel pipe (4) is located below the wooden square board (11); The wooden mold top support (5) is located below the steel pipe (4) and can limit the movement of the steel pipe (4); The steel pipe frame (7) is located below the wooden formwork support (5). One end of the steel pipe frame (7) is detachably connected to the wooden formwork support (5), and the other end of the steel pipe frame (7) is connected to the ground.

8. An aluminum-wood composite structure for floor pouring according to claim 7, wherein The vertical projection of the steel pipe (4) is perpendicular to the vertical projection of the wooden board (11).

9. An aluminum-wood composite structure for floor pouring according to claim 7, wherein The wooden mold top support (5) is limited by two steel pipes (4) arranged side by side.

10. An aluminum-wood composite structure for floor pouring according to claim 7, wherein The bottom of the wooden mold top support (5) is provided with a screw (6), and it is detachably connected to the end of the steel pipe frame (7) through the screw (6).

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