Buckling edge correcting and resetting device for steel bar truss floor support plate

Abstract

The utility model discloses a buckle edge correcting and resetting device for a steel bar truss floor support plate, which comprises a correcting head and a resetting head, the correcting head and the resetting head are connected with each other, the longitudinal section of the correcting head is of a half-water-drop-shaped structure, the longitudinal section of the resetting head is of a water-drop-shaped structure, and the longitudinal section of the resetting head is of a water-drop-shaped structure. The correcting head is used for correcting the buckling edges of the steel bar truss floor support plate before installation, and the resetting head is used for resetting the buckled buckling edges after installation. The floor support plate is used for correcting the buckling edges before installation and resetting the buckling edges after installation, so that the buckling edges of two floor support plates are combined more tightly, a gap is smaller, the situation of slurry leakage is effectively reduced, and even the slurry leakage phenomenon can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and relates to a buckling edge correction and reset device for a steel bar truss floor slab. Background Technique

[0002] A steel bar truss floor slab is a combined structural system formed by processing the main stress-bearing steel bars in the floor slab into steel bar trusses by special equipment in a factory and then welding the steel bar trusses and galvanized steel plates into one body. During the construction stage of the structural floor slab, the steel bar truss floor slab uses the galvanized steel plate to replace the construction formwork and jointly bears the self-weight of the floor slab concrete and the construction load with the truss structure formed by welding the steel bars in the structure; after pouring the concrete, a steel bar truss concrete floor slab is formed to bear the service load during the service stage. The steel bar truss floor slab has the characteristics of economy, convenience, safety and reliability, and is currently widely used in structural and construction fields such as multi-storey factories, multi-storey, high-rise and high-rise steel structure buildings, various irregular floor surfaces, various precast slabs, and high-speed railways.

[0003] During the actual construction process of the steel bar truss floor slab, the leakage of slurry from the steel bar truss floor slab is serious; the tongue-and-groove joints are not tightly lapped during the assembly process of the steel bar truss floor slab, that is, there are gaps between the buckling edges (i.e., male and female buckles) where the steel bar truss floor slabs are buckled together. It is necessary to use manual knocking to compact the buckling edges to reduce the gaps, but the gaps still exist. Therefore, the problem of slurry leakage cannot be effectively solved, and the buckling edges of the floor slab body are extremely prone to deformation during transportation, hoisting, etc., which affects the normal installation.

[0004] To solve the above problems, a device is needed that can effectively correct and reset the buckling edges of the steel bar truss floor slab, so as to improve the construction efficiency and installation efficiency, enhance the connection quality of the steel bar truss floor slab, and avoid the occurrence of slurry leakage. Content of the Utility Model

[0005] In view of this, the utility model provides a buckling edge correction and reset device for a steel bar truss floor slab. This device is used to correct the buckling edges before installation and reset the buckling edges after installation, so that the buckling edges of two floor slabs are combined more tightly, the gaps are smaller, effectively reducing the situation of slurry leakage, and even avoiding the occurrence of slurry leakage.

[0006] The utility model discloses a buckling edge correction and reset device for a steel bar truss floor slab, which includes a correction head and a reset head. The correction head and the reset head are connected to each other. The longitudinal section of the correction head is in a semi-droplet shape structure, and the longitudinal section of the reset head is in a droplet shape structure. The correction head is used to correct the buckling edges of the steel bar truss floor slab before installation, and the reset head is used to reset the buckling edges that are buckled together after installation. The semi-droplet shape means the shape left after dividing the droplet along the central axis and only leaving half.

[0007] Further, it further includes a holding handle, the holding handle is in an arc structure, and the correction head and the reset head are respectively installed at both ends of the arc of the holding handle.

[0008] Further, it further includes a connecting rod, and both the correction head and the reset head are installed on the holding handle through the connecting rod.

[0009] Further, the extension lines of the central axes of the two connecting rods intersect at the center of the arc of the holding handle.

[0010] Further, the connecting rod has a first connecting portion and a second connecting portion. The first connecting portion is connected to the end of the holding handle, and the second connecting portion is connected to the correction head or the reset head. The first connecting portion and the second connecting portion are bent in opposite directions respectively, so that both the first connecting portion and the second connecting portion are in an arc structure.

[0011] Further, the curvature of the first connecting portion is the same as the curvature of the second connecting portion.

[0012] Further, the curvature of the first connecting portion and the curvature of the second connecting portion are both greater than the curvature of the holding handle.

[0013] Advantages of the present utility model:

[0014] The present utility model provides a buckling correction and reset device for a steel bar truss floor slab. The use of the correction and reset device ensures that the buckles (male and female buckles) of the steel bar truss floor slab can be corrected before construction, so as to make the connection accurate and fast during installation. And after the steel bar truss floor slabs are connected, the buckles are reset by the correction and reset device, so that the buckles of the two floor slabs are combined more tightly, the gap is smaller, effectively reducing the situation of slurry leakage, and even avoiding the occurrence of slurry leakage phenomenon. Description of the drawings

[0015] Figure 1 It is a schematic diagram of the erection structure of the side support system in the embodiment of the present utility model;

[0016] Figure 2 It is a front view structure schematic diagram of the side support system in the embodiment of the present utility model;

[0017] Figure 3 It is a side view cross-sectional view of the side support system in the embodiment of the present utility model;

[0018] Figure 4 It is an isometric structure schematic diagram of the side support system in the embodiment of the present utility model;

[0019] Figure 5Schematic diagram of the lap joint structure between the side support system and the beam formwork in the embodiment of the present utility model;

[0020] Figure 6 Axonometric structure diagram of the correction and reset device of the present utility model;

[0021] Figure 7 Front view structure diagram of the correction and reset device of the present utility model;

[0022] Figure 8 Side view structure diagram of the correction and reset device of the present utility model;

[0023] Figure 9 Exploded structure diagram of the reserved hole forming assembly in the embodiment of the present utility model;

[0024] Figure 10 Installation structure diagram of the reserved hole forming assembly in the embodiment of the present utility model. Detailed implementation manners

[0025] It should be noted that in the description of this specification, the orientation or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. The vertical direction and the height direction in this embodiment are the same direction, and the horizontal direction is the direction perpendicular to the vertical direction. It should be noted that the correction mentioned in this embodiment means repairing the deformed buckles (including male buckles and female buckles) so that they can reach a state where they can be buckled, and the reset means shaping the buckled buckles to transform them into the designed shape or opening angle to eliminate gaps and improve the connection reliability, which can be understood by those skilled in the art of this technology and will not be elaborated here.

[0026] As shown in the figure, this embodiment will further elaborate the present utility model in combination with a cast-in-place floor construction method based on a steel bar truss floor slab.

[0027] The aforementioned cast-in-place floor construction method based on a steel bar truss floor slab specifically includes the following steps:

[0028] S1, support the beam formwork 2, and set up the side support system 1; before step S1, preparation work is still required. Before construction, the initial position of the support system should be determined according to the axis and the frame plan layout according to the construction drawing, and the frame arrangement and the module of the steel truss floor slab support platform should be verified and arranged. Then, according to the design drawings, the specific position and elevation of the floor should be determined, and the main control line should be placed using the theodolite, and then the total station and ink fountain should be used for measurement and layout; the wall column steel bars at the construction site should be tied according to the design drawings, and the wall column steel bars should be concealed after the tying is completed. After the acceptance is qualified, the wall column should be closed; after the preparation is completed, the beam formwork 2 and the supporting structure at the bottom of the beam should be erected according to the design drawings, and it should be ensured that the beam formwork 2 is erected flat and stable.

[0029] In this embodiment, the side support system 1 includes a plurality of support plates 3, and the support plates 3 are arranged in a vertically movable and lockable manner; the plurality of support plates 3 are arranged along the circumference of the beam formwork 2 on the outer side of the beam formwork 2, and any two adjacent support plates 3 are in contact with each other. As shown in the figure, the support plates 3 are arranged along the periphery of the beam formwork 2, that is, the plurality of support plates 3 are installed and arranged along the support structure of the beam formwork 2, so that the support plates 3 are provided on both sides of the beam formwork 2 in the area where the steel bar truss floor formwork needs to be laid. The plurality of support plates 3 are arranged as shown in the figure, forming a reliable support platform structure on the outer side of the beam formwork 2, providing an effective support foundation for the laying of the steel bar truss floor formwork, and also providing a working platform for the construction of workers. The support plate 3 in this embodiment further includes a long web 4 and a short web 5. As shown in the figure, the support plate 3 is a rectangular structure. The support plate 3 has two long sides and two short sides. The long web 4 is vertically arranged at the position of the long side of the support plate 3 and is located at the bottom surface of the support plate 3; the short web 5 is vertically arranged at the position of the short side of the support plate 3 and is located at the bottom surface of the support plate 3; that is, the long web 4 is arranged along the long side, and the short web 5 is arranged along the short side. When installing the support plate 3, the support plate 3 is arranged in a manner that the long web 4 is attached to the outer wall surface of the beam formwork 2. The side support system 1 in this embodiment further includes an adjusting rod 6, an outer sleeve rod 8, and an adjusting disk buckle 7. An adjusting rod 6 is fixedly arranged at the bottom surface of each support plate 3, and the outer sleeve rod 8 is also arranged in one-to-one correspondence with the adjusting rod 6; the outer sleeve rod 8 is vertically arranged, and an adjusting channel is arranged along the central axis of the outer sleeve rod 8. The entrance of the adjusting channel is located on the top surface of the outer sleeve rod 8. The adjusting rod 6 is installed in the adjusting channel in a plug-in manner. The adjusting disk buckle is sleeved on the adjusting rod 6, and the bottom surface of the adjusting disk buckle 7 abuts against the entrance of the adjusting channel so that the adjusting rod 6 is axially limited; as shown in the figure, the adjusting rod 6 is provided with an external thread, and the adjusting disk buckle 7 is provided with a threaded through hole. The adjusting rod 6 and the adjusting disk buckle are connected by a threaded fit. The adjusting disk buckle 7 can be driven to rotate so that the adjusting rod 6 is driven to move axially. The adjusting disk buckle 7 drives the adjusting rod 6 to move up and down through the thread, thereby realizing the function of the support plate 3 moving in the vertical direction. When erecting the side support system 1 in this embodiment, first erect the outer sleeve rod 8, and pull the diagonal bracing according to the requirements of the construction plan. The support plates 3 are inserted and installed on the outer sleeve rod 8 one by one through the adjusting rods 6 according to the modulus arranged in advance before construction, and are realized through the adjusting disk buckles 7. When erecting the outer sleeve rod 8, it can also be connected to the support structure of the beam formwork 2 to ensure the stability of the side support system 1 after erection.

[0030] S2. Tie the beam steel bars and reinforce the side formwork part of the beam formwork 2. Tie the beam steel bars according to the design, set the concrete protection blocks for the side wall steel bars of the beam, check the beam steel bars to ensure correct position and firm fixation. After the beam steel bars are tied, close the side formwork and reinforce it according to the construction plan for the reinforcement of the beam formwork 2. How to reinforce the beam formwork 2 is a conventional technical means in this technical field and will not be elaborated here.

[0031] S3. Adjust the height of the side support system 1. In this embodiment, the long edge corresponding to the long web 4 extends outward in the width direction of the support plate 3 to form a lapping flange 9; there are two short webs 5, and the two short webs 5 are respectively arranged at the positions of the two short sides of the support plate 3, and the two ends in the length direction of the long web 4 are respectively connected to the two short webs 5; the two short webs 5 at the adjacent positions corresponding to any two adjacent support plates 3 are arranged in mutual contact. In step S3, adjusting the height of the side support system 1 means adjusting the height of the support plate 3 until the bottom surface of the lapping flange 9 laps on the top surface of the side formwork part of the beam formwork 2. As shown in the figure, in this embodiment, the adjacent support plates 3 are connected by the two short webs 5 at their respective adjacent positions in mutual contact. For example, when the current support plate 3 is connected to the adjacent support plate 3 on the right, the short web 5 on the right side of the current support plate 3 is in mutual contact with the short web 5 on the left side of the adjacent support plate 3 on the right, and the two can be detachably connected by means such as bolt connection to ensure the overall stability of the side support system 1. When erecting the side support system this time, if encountering a beam with a corner structure as shown in the figure, the support plate 3 at the corner position needs to be provided with a lapping flange 9 not only at the long side position but also at the short side position fitting the corner to ensure that after the side support system 1 is erected, the top surfaces of the side formworks of all the beam formworks 2 are lapped with the support plates 3. And after the lapping is completed, the outer wall surface of the lapping flange 9 is flush with the inner wall surface of the side formwork of the beam formwork 2. Such a setting makes the integrity between the floor slab and the beam-column better after concrete pouring, there is no gap, and it also makes the concrete not leak during the concrete pouring process, effectively improving the construction quality.

[0032] S4. Before installation, correct the male and female fasteners of the steel bar truss floor formwork to be laid through the correction and reset device.

[0033] S5. Lay the steel bar truss floor formwork, and any steel bar truss floor formwork is connected in a way that its male or female fastener is correspondingly buckled with the female or male fastener of the adjacent steel bar truss floor formwork; after the buckling is completed, correct and reset the mutually buckled male and female fasteners through the correction and reset device so that the male and female fasteners are in mutual contact.

[0034] The correction and reset device in this embodiment includes a correction head 10, a reset head 11, and a holding handle 12. The correction head 10 and the reset head 11 are installed at both ends of the holding handle 12. The longitudinal section of the correction head 10 is in a semi-droplet shape structure, and the longitudinal section of the reset head 11 is in a droplet shape structure. The longitudinal section refers to the plane formed by cutting along the vertical direction shown in the attached drawing. The correction head 10 is used to correct the male and female fasteners of the steel bar truss floor slab before installation in step S4, and the reset head 11 is used to correct and reset the mutually engaged male and female fasteners in step S5 as shown in the figure. The correction head 10 is in a semi-droplet shape structure and has a horizontal plane. The function of the correction head 10 is to correct the fastening edges (i.e., male and female fasteners) of the floor slab body before laying. The fastening edges of the floor slab body are extremely prone to deformation during transportation, hoisting, etc., which affects normal installation. Using the correction head 10 to correct it before installation can facilitate the construction. When in use, the correction head 10 is placed at one end of the male and female fasteners in a way that the horizontal plane fits the floor slab body and pressed tightly, and then the worker holds the holding handle 12 and slides it along the opening direction of the fastening edge (i.e., the direction of the fastening edge) to the other side, and the deformed fastening edge can be corrected. When resetting the fastening edge after paving is completed, it is necessary to make the male and female fasteners fit more closely as much as possible. Therefore, the reset head 11 is designed as a complete droplet shape structure. The tip angle of the droplet shape of the reset head 11 is larger, while the semi-droplet-shaped correction head 10 only needs to correct the fastening edge so that it can be normally buckled and connected. Therefore, a semi-droplet shape is selected, which simplifies the structure while ensuring the effect. After the steel bar truss floor slab is installed, the reset head 11 is inserted into the groove at one end of the fastening edge of the floor slab body. When the reset head 11 fits tightly with the fastening edge and slides to the other end, the fastening edges of the two floor slab bodies can be combined more closely, which reduces or even avoids the occurrence of grout leakage.

[0035] In this embodiment, it further includes a connecting rod 13. Both the correction head 10 and the reset head 11 are mounted on the holding handle 12 through the connecting rod 13. The connecting rod 13 has a first connecting portion 15 and a second connecting portion 14. The first connecting portion 15 is connected to the end of the holding handle 12, and the second connecting portion 14 is connected to the correction head 10 or the reset head 11. The first connecting portion 15 and the second connecting portion 14 are bent in opposite directions respectively, so that both the first connecting portion 15 and the second connecting portion 14 are in an arc structure. In this embodiment, the holding handle 12 is arc-shaped, and the extension lines of the central axes of the two connecting rods 13 intersect at the center of the arc of the holding handle 12. Since the floor bearing plate body is placed on the ground or fixed at the top during the correction or reset work, the construction workers need to bend down or look up to operate. If both the connecting rod 13 and the holding handle 12 are coaxial straight rods, it will be more laborious to operate. The connecting rod 13 is integrally designed in an "S" shape structure. After being installed on the holding handle 12, the whole is a continuously bent snake-shaped structure. Coupled with the fact that the extension lines of the central axes of the connecting rod 13 intersect at the center of the arc of the holding handle 12, it makes the whole correction device more labor-saving and convenient for the workers to operate. Further, in this embodiment, the curvature of the first connecting portion is the same as that of the second connecting portion, and the curvature of the first connecting portion and the second connecting portion are both greater than the curvature of the holding handle. That is to say, the bending degree of the first connecting portion and the second connecting portion is deeper, while the bending degree of the holding handle is shallower and more gentle. Such a design is also for more labor-saving and convenient for the workers to operate during the operation process. As shown in the figure, the bending direction of the holding handle in this embodiment is opposite to the bending direction of the first connecting portion and the same as the bending direction of the second connecting portion. In this embodiment, in order to avoid damaging the floor bearing plate body, anti-impact structures are provided at both ends of the correction head and the reset head. The anti-impact structure of the correction head is a quarter of a three-dimensional water droplet structure, while the anti-impact structure of the reset head is a half of a three-dimensional water droplet structure. As shown in the figure, this structure can avoid the sharp corner structure in the actual operation process from directly impacting the floor bearing plate body and causing its deformation and damage.

[0036] S6. Install the reserved hole forming assembly at the set position of the steel bar truss floor bearing plate and pour concrete;

[0037] Among them, the pre - reserved hole forming assembly includes an inner base 17, an outer base 16 and a pre - embedded pipe 18. The rib - truss floor formwork has a floor formwork body 22 and a steel bar truss installed on the floor formwork body 22. The inner base 17 is arranged on the top surface of the floor formwork body 22. An insertion joint 19 is provided on the top surface of the outer base 16. The insertion joint 19 of the outer base 16 passes through the lower part of the floor formwork body 22 and is detachably connected to the inner base 17. The top surface of the outer base 16 is attached to the bottom surface of the floor formwork body 22, and the bottom surface of the inner base 17 is attached to the top surface of the floor formwork body 22. The pre - embedded pipe 18 is vertically installed on the top of the inner base 17. The inner base 17 has a vertical installation channel 20. The insertion joint 19 and the pre - embedded pipe 18 are respectively inserted into both ends of the vertical direction of the installation channel 20. The pre - embedded pipe 18 is provided with a through middle channel 21 in the vertical direction, and the middle channel 21 is communicated with the installation channel 20. As shown in the figure, both the inner base 17 and the outer base 16 are in a horn - like structure. The inner base 17 is in a disc shape, and an insertion joint 19 is integrally formed on its top surface. The inner surface of the insertion joint 19 is provided with an external thread, and a sealing gasket is also provided on the top surface of the inner base 17, so that the top surface of the inner base 17 tightly adheres to the bottom surface of the floor formwork body 22 after fixation, and no slurry leakage will occur. The top of the inner base 17 extends radially outward to form a horn - like flanging. The inner base 17 is also vertically arranged. An installation channel 20 is axially opened on it. Internal threads are provided at both ends of the installation channel 20. The insertion joint 19 is thread - connected to the bottom of the installation channel 20, and the pre - embedded pipe 18 is installed at the top of the installation channel 20 by means of thread connection. And the middle channel 21 of the pre - embedded pipe 18 is communicated with and coaxial with the installation channel 20. After the pouring is completed, the inner base 17 and the pre - embedded pipe 18 will form the pre - reserved holes we need in the concrete 23 to be used as a setting - out hole or a hole for the pre - embedded pipe 18 line. It should be noted that after the pouring is completed, the top of the pre - embedded pipe 18 should extend outside the concrete 23, that is, the upper part as shown in the figure. Such a design can protect the floor slab and also play a role in protecting the subsequent wire threading. After the installation is completed, the inner base 17 and the outer base 16 will form a clamping structure on the floor formwork body 22. Since the insertion joint 19 passes through the floor formwork body 22, and the diameter of the inner base 17 is larger than that of the insertion joint 19, and the top surface of the outer base 16 is tightly attached to the floor formwork body 22, only a hole is required to be opened on the floor formwork according to the size of the insertion joint 19. After the inner base 17 and the outer base 16 are installed, their clamping completely seals the hole, so slurry leakage is avoided.

[0038] S7. After the concrete is poured, cure the concrete and remove the support system. Before pouring, conduct a concealed acceptance inspection on the steel bars of the beam and slab, including the variety, specification, quantity, position, etc. of the longitudinally stressed steel bars, the connection method, joint position, joint quantity, joint area percentage, etc. of the steel bars, the variety, specification, quantity, spacing, etc. of the stirrups and transverse steel bars, and the specification, quantity, position, etc. of the embedded parts. After the concealed acceptance inspection of the steel bars and embedded parts of the beam and slab is completed, when pouring the concrete formwork, do not pour concentratedly. During the pouring process, the vibration time should make the concrete surface show slurry, without air bubbles and without subsidence. After the concrete is poured, finish and polish the concrete surface, and then cover it with plastic film for curing and sprinkle water for curing. After the concrete reaches the required strength, remove the support system. The support system here includes the side support system 1, the beam formwork 2 and its support system, and other auxiliary support and protection systems that will be erected during actual construction but are not mentioned in this embodiment. This is understandable to those skilled in the art and will not be elaborated here.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A buckle edge correction and resetting device for a steel bar truss floor deck, characterized in that: It includes a correction head and a reset head, which are connected to each other. The longitudinal section of the correction head is a semi-teardrop-shaped structure, and the longitudinal section of the reset head is a teardrop-shaped structure. The correction head is used to correct the buckle edges of the steel truss floor deck before installation, and the reset head is used to reset the buckled edges that are interlocked after installation.

2. The buckle edge correction and resetting device for steel bar truss floor deck according to claim 1 is characterized in that: It also includes a holding handle, which is an arc-shaped structure, and the correction head and the resetting head are respectively installed at two ends of the arc of the holding handle.

3. The buckle edge correction and resetting device for steel bar truss floor deck according to claim 2 is characterized in that: It also includes a connecting rod, and the correction head and the resetting head are both installed on the holding handle through the connecting rod.

4. The buckle edge correction and resetting device for steel bar truss floor deck according to claim 3 is characterized in that: The extension lines of the central axes of the two connecting rods intersect at the arc center of the holding handle.

5. The buckle edge correction and resetting device for steel bar truss floor deck according to claim 3 is characterized in that: The connecting rod has a first connecting portion and a second connecting portion, the first connecting portion is connected to the end of the holding handle, and the second connecting portion is connected to the correction head or the resetting head, and the first connecting portion and the second connecting portion are bent in opposite directions respectively, so that the first connecting portion and the second connecting portion both have an arc structure.

6. The buckle edge correction and resetting device for steel bar truss floor deck according to claim 5 is characterized in that: The curvature of the first connection portion is the same as the curvature of the second connection portion.

7. The buckle edge correction and resetting device for steel bar truss floor deck according to claim 5 is characterized in that: The curvature of the first connecting portion and the curvature of the second connecting portion are both greater than the curvature of the holding handle.

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