Assembled laminated slab, combined laminated slab and laminated slab construction method

Abstract

The application provides an assembled laminated slab, a combined laminated slab and a laminated slab construction method, and belongs to the technical field of laminated slabs.The laminated slab comprises a concrete slab, a surrounding plate and a plurality of pull rods.The concrete slab is internally provided with a plurality of steel bars arranged in a longitudinal and transverse crisscross manner and a plurality of steel pipes arranged in a longitudinal and transverse crisscross manner.The surrounding plate is attached to the outer edge of the concrete slab.The surrounding plate is provided with a plurality of through holes corresponding to the steel pipes.The plurality of pull rods are in one-to-one sliding connection with the plurality of steel pipes.One end of the pull rod is connected to the surrounding plate through an adjusting member, and the other end of the pull rod is used to be connected to a steel reinforcement cage or to pass through the steel pipe in the interior of the adjacent concrete slab and then be connected to the surrounding plate at the outer edge of the steel pipe, so that two adjacent concrete slabs are connected into a whole.The assembled laminated slab, the combined laminated slab and the laminated slab construction method provided by the application can realize convenient connection with the steel reinforcement cage or the adjacent concrete slab by adjusting the sliding distance of the pull rod through the adjusting member, and can enhance the structural integrity and improve the construction efficiency.

Description

Technical Field

[0001] This invention belongs to the field of composite slab technology, and more specifically, relates to an assembled composite slab, a combined composite slab, and a construction method for composite slabs. Background Technology

[0002] Composite slabs are precast concrete components commonly used in prefabricated buildings. They mainly consist of a precast base slab and a cast-in-place composite layer, and are widely used in the construction of horizontal structures such as floor slabs, roof slabs, and balcony slabs in building engineering. Composite slabs combine the efficient assembly advantages of precast components with the overall rigidity of cast-in-place structures, and have significant application value in residential buildings, public buildings, industrial plants, and other fields.

[0003] Currently, the on-site installation process for precast composite slabs typically includes three core steps: hoisting and positioning, position adjustment, and rebar connection. Specifically, during construction, the precast composite slabs are first hoisted to the designed installation position using a crane and initially fixed using temporary support devices. Subsequently, construction workers need to manually fine-tune the horizontal position, elevation, and axial deviation of the composite slabs using tools such as crowbars to ensure the splicing accuracy with adjacent components. After the position adjustment is completed, the rebars extending from the bottom of the precast composite slab are tied to the on-site structural rebar cage (or the reserved rebars of adjacent composite slabs) using steel wires to form an integral load-bearing skeleton. Finally, the composite layer concrete is poured to achieve structural integration.

[0004] The inventors discovered that existing composite slab installation methods have significant limitations in practical applications: position adjustment relies on manual operation using crowbars, requiring construction workers to repeatedly pry and calibrate, which is not only labor-intensive and inefficient, but also difficult to precisely control the adjustment force, easily leading to displacement or overturning of the composite slab due to uneven force; in addition, manual adjustment has poor precision, and is affected by factors such as the experience of construction workers and visual errors, resulting in frequent problems such as horizontal deviation, elevation error, and axis misalignment of the composite slab, which may lead to quality hazards such as cracking and uneven stress after subsequent composite layer pouring; during the rebar binding process, the firmness of the steel wire connection is easily affected by manual operation, and may affect the overall structural safety due to loose binding or detachment. The above problems together restrict the construction efficiency and project quality of prefabricated buildings, making it difficult to meet the requirements of modern buildings for high-precision and high-efficiency assembly. Summary of the Invention

[0005] The purpose of this application is to provide a prefabricated composite slab, a combined composite slab, and a construction method for composite slabs, in order to solve the problems of time-consuming, labor-intensive, and inaccurate manual adjustment of the position using pry bars in the existing composite slab installation, and the fact that the firmness of the steel wire binding is easily affected by manual operation, which restricts construction efficiency and project quality.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A modular composite panel is provided, comprising:

[0008] The concrete slab contains multiple steel bars arranged in a crisscross pattern, as well as multiple steel pipes arranged in a crisscross pattern.

[0009] A surrounding panel is attached to the outer edge of the concrete slab; the reinforcing bars and the steel pipes are both fixedly connected to the surrounding panel, and the surrounding panel has multiple through holes corresponding to and communicating with the steel pipes; and

[0010] Multiple tie rods are slidably connected to multiple steel pipes in a one-to-one correspondence; both ends of the tie rods extend to the outside of the enclosure, and one end of the tie rod is connected to the enclosure through an adjusting member, while the other end of the tie rod is used to connect to the structural steel reinforcement cage or to pass through the steel pipe inside another adjacent concrete slab and connect to the enclosure of another concrete slab, so that the two adjacent concrete slabs are connected into a whole.

[0011] The adjusting component can drive the tie rod to slide relative to the steel pipe to adjust the distance between the concrete slab and the structural steel cage or another concrete slab.

[0012] In one possible implementation, the adjusting member includes:

[0013] A screw, coaxially and fixedly connected to the end of the pull rod; and

[0014] An adjusting nut is coaxially sleeved on the screw and threadedly connected to the screw; the side of the adjusting nut facing the concrete slab abuts against the surrounding plate.

[0015] In one possible implementation, the end of the tie rod facing away from the adjusting member has a bend that bends to one side, the bend being used to connect with the structural steel reinforcement cage or the enclosure on another of the concrete slabs.

[0016] In one possible implementation, the tie rods are arranged longitudinally or laterally with adjacent rods facing opposite directions.

[0017] In one possible implementation, the upper side of the concrete slab has an installation groove, and the installation groove and the outer edge of the concrete slab have multiple communicating channels, both of which are used for installing water and electricity pipes.

[0018] In one possible implementation, the enclosure has a plurality of notches that communicate with the plurality of said channels.

[0019] In one possible implementation, the channel has multiple limiting rods arranged axially; when the water and electricity pipes are installed in the mounting groove, the limiting rods are adapted to be positioned above the water and electricity pipes.

[0020] In one possible implementation, the upper side of the concrete slab has multiple irregular grooves to improve the roughness of the upper side of the concrete slab.

[0021] In this embodiment, the concrete slab is placed at the predetermined installation position using hoisting equipment, and its horizontal and vertical alignment is adjusted using temporary supports to prevent displacement. If the object being connected is a structural steel reinforcement cage, it must be ensured that the relative position of the edge of the concrete slab and the structural steel reinforcement cage conforms to the design clearance.

[0022] Depending on the connection target, the installation process can be divided into two scenarios:

[0023] If connected to a structural steel reinforcement cage: Fix the non-adjustable end of the tie rod to the structural steel reinforcement cage by welding, binding, or bolting, ensuring that the tie rod axis is aligned with the direction of force on the structural steel reinforcement cage. If connected to another concrete slab: Hoist the second concrete slab to an adjacent position to the first slab, aligning the edges of the two slabs; pass the non-adjustable end of the tie rod through the through-hole in the second slab's enclosure, extending it into the internal steel pipe until the end of the tie rod extends beyond the enclosure, and fix the extended portion to the enclosure by welding or bolting.

[0024] Operate the adjusting component on the first slab enclosure to slide the tie rod along the steel pipe axis, adjusting the distance between the concrete slab and the structural reinforcement cage or adjacent concrete slabs until it meets the design clearance requirements. During the adjustment process, the clearance dimensions must be measured in real time to ensure the error is within the allowable range.

[0025] Compared with existing technologies, the prefabricated composite slab provided in this application prefabricates the concrete slab in the factory, with the internal reinforcing bars, steel pipes, and surrounding panels forming a single integrated structure. On-site splicing is only required via tie rods, reducing on-site work such as formwork erection and rebar tying, and shortening the construction cycle. Both ends of the tie rods and the adjusting components are located outside the surrounding panels, eliminating the need for deep connections and adjustments within the concrete slab, reducing construction difficulty, and making it particularly suitable for installation in confined spaces. The crisscrossing reinforcing bars and steel pipes inside the concrete slab enhance its shear and tensile strength; the surrounding panels are fixed to the reinforcing bars and steel pipes, forming an edge-reinforced structure; the tie rods penetrate adjacent components, transferring the load to the whole structure and avoiding concentrated stress at a single point. After the adjusting components are locked, the tie rods, steel pipes, and surrounding panels form a rigid node, effectively resisting vibrations or load impacts during construction and reducing the risk of joint cracking. By adjusting the tie rods through the adjusting components, the gap between the concrete slab and the structural reinforcing cage or adjacent concrete slabs can be flexibly adjusted to accommodate construction errors and different design load requirements. Concrete slabs of the same specification can be adapted to various splicing scenarios, such as straight splicing or corner splicing, by adjusting the length of the tie rods and the stroke of the adjustable components.

[0026] The technical solution adopted in this application also provides a composite laminate, including the assembled composite laminate proposed in any of the foregoing.

[0027] The technical solution adopted in this application also provides a method for constructing composite slabs, which, based on any of the foregoing descriptions of assembled composite slabs, includes the following steps:

[0028] A. Inspect the integrity and specifications of each component of the assembled composite slab, and confirm that the steel bars and steel pipes inside the concrete slab are securely connected to the surrounding panel;

[0029] B. Hoist the concrete slab to the designed installation position, fix the concrete slab with temporary supports, adjust the level and elevation of the concrete slab, and complete the initial positioning;

[0030] C. Insert the tie rods one by one into the steel pipes inside the concrete slab, so that both ends of the tie rods extend outside the enclosure, and install the adjusting component at the end of the tie rods that extends out of the enclosure;

[0031] D. The other end of the tie rod extending from the enclosure is fixed to the structural steel reinforcement cage by binding, welding or bolting, or the steel pipe passing through the adjacent concrete slab is connected to the enclosure of the other concrete slab;

[0032] E. By operating the adjustment component, the tie rod is axially slid within the steel pipe to adjust the distance between the concrete slab and the structural steel cage or another concrete slab to the design value, and simultaneously calibrate the overall flatness and edge alignment of multiple concrete slabs;

[0033] F. Lock the adjusting member to prevent the tie rod from sliding, and reinforce the connection nodes of the tie rod with the structural steel cage or another enclosure plate and the joints of adjacent concrete slabs by welding or bolting to ensure the rigidity of the nodes;

[0034] G. Clean the surface and joints of the concrete slab, pour the post-cast concrete composite layer and vibrate it to compact it, cover it with moisture-retaining material and cure it until the concrete strength reaches the design requirements, then remove the temporary supports.

[0035] The beneficial effects of the combined composite slab and the composite slab construction method provided in this embodiment are the same as those of the aforementioned assembled composite slab, and will not be repeated here. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 A three-dimensional structural diagram of the assembled composite plate provided in an embodiment of the present invention. Figure 1 ;

[0038] Figure 2 This is a top view of the assembled composite plate provided in an embodiment of the present invention;

[0039] Figure 3 This is a side view of the assembled composite plate provided in an embodiment of the present invention;

[0040] Figure 4 A three-dimensional structural diagram of the assembled composite plate provided in an embodiment of the present invention. Figure 2 (Concrete slabs are omitted from the image);

[0041] Figure 5 This is a three-dimensional structural diagram of the composite plate provided in an embodiment of the present invention;

[0042] The following are the labeling elements in the figure:

[0043] 1. Concrete slab; 11. Reinforcing bar; 12. Steel pipe; 2. Enclosure panel; 21. Notch; 3. Tie rod; 31. Bending part; 4. Adjusting component; 41. Screw; 42. Adjusting nut; 5. Mounting groove; 51. Channel; 52. Limiting rod; 6. Irregular groove. Detailed Implementation

[0044] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0045] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0046] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention 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 the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0048] Please refer to the following: Figures 1 to 5 The present application describes the prefabricated composite slab, the combined composite slab, and the construction method of the composite slab. The prefabricated composite slab includes a concrete slab 1, a surrounding panel 2, and multiple tie rods 3.

[0049] The concrete slab 1 has multiple steel bars 11 arranged in a crisscross pattern inside, as well as multiple steel pipes 12 arranged in a crisscross pattern inside. The concrete slab 1 also has a set of steel bars 11 arranged in parallel and partially extending to the upper side of the concrete slab 1. These steel bars 11 are also called truss bars, which are used to provide connection points for hoisting and tying the steel bars 11 of the post-poured cement layer.

[0050] The enclosure 2 is attached to the outer edge of the concrete slab 1; the reinforcing bars 11 and the steel pipes 12 are fixedly connected to the enclosure 2, and the enclosure 2 has multiple through holes that are connected to the steel pipes 12.

[0051] Multiple tie rods 3 are slidably connected to multiple steel pipes 12 in a one-to-one correspondence; both ends of the tie rods 3 extend to the outside of the enclosure 2, and one end of the tie rod 3 is connected to the enclosure 2 through the adjusting component 4, and the other end of the tie rod 3 is used to connect to the structural steel cage or to the enclosure 2 of the adjacent concrete slab 1 through the steel pipe 12 inside another concrete slab 1, so that the two adjacent concrete slabs 1 are connected into a whole.

[0052] The adjusting component 4 can drive the tie rod 3 to slide relative to the steel pipe 12 to adjust the distance between the concrete slab 1 and the structural steel cage or another concrete slab 1.

[0053] The composite load-bearing skeleton formed inside the concrete slab 1 by the steel bars 11 and steel pipes 12 enhances the bending and shear strength of the concrete slab 1. The surrounding plate 2 serves as the edge restraint member of the concrete slab 1 and provides an installation reference for the tie rod 3. The tie rod 3 slides with the steel pipe 12, and combined with the adjustment mechanism of the adjustment member 4, the distance between adjacent concrete slabs 1 or between the concrete slab 1 and the structural steel cage can be adjusted, thereby ensuring connection accuracy and structural integrity.

[0054] In this embodiment, the concrete slab 1 is placed at the predetermined installation position using hoisting equipment, and its horizontal and vertical alignment is adjusted using temporary supports to prevent displacement. If the connected object is a structural steel reinforcement cage, it must be ensured that the relative position of the edge of the concrete slab 1 and the structural steel reinforcement cage conforms to the design clearance.

[0055] Depending on the connection target, the installation process can be divided into two scenarios:

[0056] If connected to a structural steel reinforcement cage: the non-adjustable end of the tie rod 3 is fixed to the structural steel reinforcement cage by welding, binding, or bolting, ensuring that the axis of the tie rod 3 is consistent with the direction of force on the structural steel reinforcement cage. If connected to another concrete slab 1: the second concrete slab 1 is hoisted to an adjacent position to the first slab, aligning the edges of the surrounding panels 2 of the two slabs; the non-adjustable end of the tie rod 3 is passed through the through hole of the second slab's surrounding panel 2 and inserted into its internal steel pipe 12 until the end of the tie rod 3 extends beyond the outside of the slab's surrounding panel 2, and the extended part is fixed to the surrounding panel 2 by welding or bolting.

[0057] Operate the adjusting component 4 on the first slab enclosure 2 to drive the tie rod 3 to slide axially along the steel pipe 12, adjusting the distance between the concrete slab 1 and the structural reinforcement cage or adjacent concrete slab 1 until it meets the design clearance requirements. During the adjustment process, the clearance dimensions need to be measured in real time to ensure that the error is within the allowable range.

[0058] Compared with the prior art, the prefabricated composite slab provided in this application embodiment features a precast concrete slab 1 in a factory, with internal reinforcing bars 11, steel pipes 12, and surrounding panels 2 integrally formed. On-site splicing is only required via tie rods 3, reducing on-site work such as formwork erection and reinforcing bar 11 tying, thus shortening the construction cycle. Both ends of the tie rods 3 and the adjusting components 4 are located outside the surrounding panels 2, eliminating the need for deep connections and adjustments within the concrete slab 1, reducing construction difficulty, and making it particularly suitable for installation in confined spaces. The crisscrossing reinforcing bars 11 and steel pipes 12 inside the concrete slab 1 enhance its shear and tensile strength; the surrounding panels 2 are fixed to the reinforcing bars 11 and steel pipes 12, forming an edge-reinforced structure; the tie rods 3 penetrate adjacent components, transferring the load to the whole and avoiding concentrated stress at a single point. After the adjusting components 4 are locked, the tie rods 3, steel pipes 12, and surrounding panels 2 form a rigid node, effectively resisting vibration or load impact during construction and reducing the risk of joint cracking. By adjusting the tie rod 3 to slide along the adjusting component 4, the gap between the concrete slab 1 and the structural steel cage or adjacent concrete slabs 1 can be flexibly adjusted to accommodate construction errors and different design load requirements. Concrete slabs 1 of the same specification can be adapted to various splicing scenarios, such as straight splicing or corner splicing, by adjusting the length of the tie rod 3 and the stroke of the adjusting component 4.

[0059] In some embodiments, the adjustment member 4 may be as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The adjusting component 4 includes a screw 41 and an adjusting nut 42.

[0060] The screw 41 is coaxially fixedly connected to the end of the pull rod 3, or the external thread is directly machined on the pull rod 3.

[0061] The adjusting nut 42 is coaxially sleeved on the screw 41 and is threadedly connected to the screw 41; the adjusting nut 42 abuts against the surrounding plate 2 on the side facing the concrete slab 1.

[0062] The installation steps of the adjusting component 4 include: welding or threading the screw 41 and the end of the tie rod 3 coaxially to ensure that their axes coincide; inserting the adjusting nut 42 coaxially into the screw 41, and screwing it in so that the nut faces the side of the concrete slab 1 and abuts against the surface of the surrounding plate 2, thus completing the initial assembly of the adjusting component 4.

[0063] Based on the principle of threaded transmission, the adjusting nut 42 and the screw 41 form a helical pair. When the adjusting nut 42 is rotated, it moves axially along the screw 41. Since the adjusting nut 42 abuts against the enclosure plate 2, its movement will cause the pull rod 3 to slide synchronously within the steel pipe 12, thereby changing the length of the pull rod 3 extending out of the enclosure plate 2 and realizing the adjustment of the distance between the concrete slab 1 and the connected object (structural steel cage or another concrete slab 1). The threaded connection has a self-locking characteristic, and can stably maintain its position after adjustment. The adjusting nut 42 can adopt a double nut structure to further improve the locking reliability.

[0064] By adopting the above technical solution, the threaded adjustment method is easy to operate, and stepless adjustment can be achieved by rotating the nut, with high precision; the force of the adjusting nut 42 and the surrounding plate 2 is uniform, avoiding local stress concentration; the self-locking performance of the thread ensures that the position is stable after adjustment, without the need for an additional locking device; the structure is simple, the cost is low, and it is easy to standardize production and installation.

[0065] In some embodiments, the aforementioned pull rod 3 may be as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The tie rod 3 has a bent portion 31 at one end facing away from the adjusting member 4. The bent portion 31 is used to connect with the structural steel cage or the enclosure plate 2 on another concrete slab 1.

[0066] During on-site construction, a bent portion 31 facing one side can be formed at the end of the tie rod 3 by cold bending or hot bending. The bending angle is determined according to the shape of the connected object (structural steel cage or enclosure 2) to ensure that the contact area between the bent portion 31 and the connected object meets the stress requirements. When tied to the structural steel cage, the bent portion 31 can hook onto the node of the steel bar 11, or when connected to another enclosure 2, the bent portion 31 can be bolted or welded to the connector on the enclosure 2 to improve the pull-out resistance and stability of the connection.

[0067] The bending part 31 can be designed as an L-shaped, U-shaped or hook-shaped structure to adapt to different connection scenarios; the surface of the bending part 31 can be provided with anti-slip textures or barbs to enhance the friction with the binding material; or a through hole can be opened at the end of the bending part 31 for bolts to be inserted to achieve a rigid connection.

[0068] By adopting the above technical solution, the bending structure simplifies the connection operation with the structural steel cage or enclosure 2, and can achieve initial fixation without additional connectors; it increases the stress area of ​​the connection node, improves the connection strength and fatigue resistance; compared with the straight end, the bending part 31 can effectively prevent the tie rod 3 from slipping out of the connected object when under force, thus improving structural safety.

[0069] In some embodiments, the aforementioned pull rod 3 may be as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The two adjacent tie rods 3 are arranged longitudinally or laterally and face opposite directions.

[0070] In the longitudinal or transverse direction of the concrete slab 1, the orientation of two adjacent tie rods 3 (i.e., the direction of the end where the adjusting member 4 is located and the direction of the bending part 31 are located) is set to be opposite. For example, the adjusting member 4 of the first tie rod 3 is located on the left and the bending part 31 is located on the right, the adjusting member 4 of the second tie rod 3 is located on the right and the bending part 31 is located on the left, and so on alternately.

[0071] Since the adjacent tie rods 3 face opposite directions, they can be connected to the structural steel cages on both sides of the concrete slab 1 or to another concrete slab 1, so that the tension or pressure in the longitudinal or transverse direction is evenly distributed on both sides of the concrete slab 1, avoiding the deformation of the enclosure 2 or the eccentric force on the concrete slab 1 caused by concentrated force on one side; at the same time, the tie rods 3 arranged in opposite directions can form mutually balanced internal forces when working together, reducing the lateral displacement of the overall structure.

[0072] By adopting the above technical solution, the reverse arrangement makes the concrete slab 1 uniformly stressed in the longitudinal and transverse directions, avoids stress concentration, and improves the overall stability and deformation resistance of the structure; reduces the load on the single-sided enclosure 2 and extends the service life of the enclosure 2; and eliminates the need to distinguish the tie rods 3 in a specific direction during construction, reducing the installation error rate and improving construction efficiency.

[0073] In some embodiments, the concrete slab 1 described above may be as follows: Figure 1 and Figure 2 The structure shown is described in the following document. Figure 1 and Figure 2 The upper side of the concrete slab 1 has an installation groove 5, and there are multiple channels 51 connecting the installation groove 5 and the outer edge of the concrete. The installation groove 5 and the channels 51 are used to install water and electricity pipes.

[0074] On the upper surface of the concrete casting mold, a raised structure corresponding to the installation groove 5 and the channel 51 is pre-set. After the concrete is poured and vibrated to compact it, the raised structure is removed before the concrete initially sets, forming the upper installation groove 5 and the channel 51 connecting to the outer edge. The size of the installation groove 5 is designed according to the diameter and number of water and electricity pipes, and the direction of the channel 51 matches the planned path of the water and electricity pipeline.

[0075] The installation groove 5 serves as a centralized space for water and electricity pipes, accommodating multiple pipes arranged in parallel or cross directions. The channel 51 connects the installation groove 5 to the outer edge of the concrete slab 1, allowing pipes to extend from inside the slab to outside the slab or into the channel 51 of an adjacent slab, thus achieving continuous laying of pipelines. There is no need for secondary excavation after the concrete slab 1 is installed, avoiding damage to the structural reinforcement and the concrete body.

[0076] By adopting the above technical solutions, the integrated pipeline installation space simplifies the construction process, reduces the amount of excavation work in the later stage, and reduces the risk of damage to the structure; the standardized design of the installation groove 5 and channel 51 facilitates factory prefabrication and improves production efficiency; the orderly pipeline layout facilitates later maintenance and repair, and reduces operation and maintenance costs.

[0077] In some embodiments, the aforementioned enclosure 2 may be adopted as follows: Figures 1 to 4 The structure shown is described in the following document. Figures 1 to 4 The enclosure 2 has multiple notches 21 that correspond to and communicate with multiple channels 51.

[0078] The gap 21 creates an open space between the end of the channel 51 and the outside of the enclosure 2. Water and electricity pipes can extend from the channel 51 through the gap 21 to the outside of the concrete slab 1, or connect with the gap 21 of the channel 51 of the adjacent concrete slab 1, so as to realize the continuous laying of pipelines across the slab. The existence of the gap 21 avoids the enclosure 2 from blocking the extension of the pipeline and ensures the flexibility of the pipeline route.

[0079] By adopting the above technical solution, the gap 21 structure solves the problem of connecting the channel 51 with the outside, ensuring the continuity and flexibility of pipeline laying; there is no need to make on-site holes in the enclosure 2, reducing construction errors and workload; the corresponding design of the gap 21 and the channel 51 makes the pipeline positioning more accurate and improves the installation quality.

[0080] In some embodiments, the channel 51 described above may employ, for example... Figures 1 to 3 The structure shown is described in the following document. Figures 1 to 3 The channel 51 has multiple limiting rods 52 arranged along the axial direction; when the water and electricity pipes are installed in the installation groove 5, the limiting rods 52 are adapted to be located on the upper side of the water and electricity pipes.

[0081] Before the concrete slab 1 is poured, multiple limiting rods 52 are pre-set in the mold corresponding to the channel 51. The limiting rods 52 are arranged at intervals along the axial direction of the channel 51, and their height is higher than the bottom surface of the channel 51. That is, there is space between the bottom of the limiting rods 52 and the bottom surface of the channel 51 to accommodate water and electricity pipes. After the concrete is poured and formed, the limiting rods 52 and the concrete slab 1 form an integral structure.

[0082] When water and electricity pipes are installed in the channel 51, the limiting rod 52 is located on the upper side of the pipe, which restricts the vertical displacement of the pipe by physical blocking, and prevents the pipe from floating during concrete pouring or vibration. At the same time, the spaced limiting rods 52 can form multi-point constraints on the pipe to avoid the pipe from deviating in the horizontal direction.

[0083] By adopting the above technical solution, the limiting rod 52 effectively fixes the position of the water and electricity pipeline, ensuring that it meets the design elevation and direction, and improving the construction quality; no additional pipeline fixing support is required, reducing material costs and installation workload; it is integrally formed with the concrete slab 1, with a stable structure and is not prone to failure in long-term use.

[0084] In some embodiments, the concrete slab 1 described above may be as follows: Figure 1 and Figure 2 The structure shown is described in the following document. Figure 1 and Figure 2 The upper side of the concrete slab 1 has multiple irregular grooves 6, which are used to improve the roughness of the upper side of the concrete slab 1.

[0085] After the concrete slab 1 is poured and vibrated, but before initial setting, multiple irregularly distributed grooves are formed on the concrete surface by manually using a template with protrusions, a brush tool, or an indentation device. The depth of the grooves is determined according to the design roughness requirements.

[0086] The irregular groove 6 increases the surface area and roughness of the upper surface of the concrete slab 1. When the post-cast concrete composite layer is poured, the composite layer concrete can be embedded in the irregular groove 6 to form a mechanical interlock. At the same time, the rough surface improves the bonding force between the new and old concrete and avoids relative slippage of the composite surface.

[0087] By adopting the above technical solution, the bonding performance and shear strength of the concrete slab 1 and the post-cast composite layer are significantly improved, ensuring that the composite slab as a whole is subjected to stress in a coordinated manner; compared with a smooth surface, the risk of cracking of the composite surface due to insufficient bonding is reduced; no additional interface agent is required, reducing construction costs.

[0088] The technical solution adopted in this application also provides a composite laminate, such as Figure 5 As shown, this includes any of the aforementioned assembled composite panels.

[0089] According to the size and stress requirements of the building structure, the assembled composite slabs are connected into a whole by tie rods 3. The bent part 31 at the end of the tie rod 3 is connected to the surrounding plate 2 of the adjacent plate, or it is fixed by adjusting component 4 after passing through the steel pipe 12 of the adjacent plate, and the relative position and overall flatness of each plate are adjusted to form a composite composite slab structure.

[0090] The modular design makes the composite slabs more applicable, meeting the needs of different building sizes and functions; modular assembly reduces the difficulty of transporting and hoisting large prefabricated components and lowers the requirements for construction equipment; each assembly unit is produced independently, which facilitates quality control and standardized management and improves construction efficiency.

[0091] The technical solution adopted in this application also provides a method for constructing composite slabs, based on any of the foregoing assembled composite slabs, including the following steps:

[0092] A. Check the integrity and specifications of each component of the assembled composite slab, and confirm that the steel bars 11 and steel pipes 12 inside the concrete slab 1 are firmly fixed to the surrounding slab 2.

[0093] B. Hoist the concrete slab 1 to the designed installation position, use temporary supports to fix the concrete slab 1, adjust the level and elevation of the concrete slab 1, and complete the initial positioning.

[0094] C. Insert the tie rods 3 one by one into the steel pipes 12 inside the concrete slab 1, so that both ends of the tie rods 3 extend outside the enclosure 2, and install the adjusting component 4 at the end of the tie rods 3 that extends out of the enclosure 2.

[0095] D. Extend the tie rod 3 out of the other end of the enclosure 2 and fix it to the structural steel reinforcement cage by binding, welding or bolting, or pass through the steel pipe 12 of another adjacent concrete slab 1 and connect it to the enclosure 2 of another concrete slab 1.

[0096] E. The operating adjustment component 4 drives the tie rod 3 to slide axially within the steel pipe 12, adjusting the distance between the concrete slab 1 and the structural steel cage or another concrete slab 1 to the design value, and simultaneously calibrating the overall flatness and edge alignment of multiple concrete slabs 1.

[0097] F. Locking adjustment component 4 prevents tie rod 3 from sliding. The connection nodes of tie rod 3 with structural steel cage or other enclosure 2 and the joints of adjacent concrete slabs 1 are reinforced by welding or bolts to ensure node rigidity.

[0098] G. Clean the surface and joints of concrete slab 1, pour the post-concrete composite layer and vibrate it to compact it, cover it with moisture-retaining material and cure it until the concrete strength reaches the design requirements, then remove the temporary supports.

[0099] The beneficial effects of the combined composite slab and the composite slab construction method provided in this embodiment are the same as those of the aforementioned assembled composite slab, and will not be repeated here.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular composite panel, characterized in that, include: The concrete slab (1) has multiple steel bars (11) arranged in a crisscross pattern inside, as well as multiple steel pipes (12) arranged in a crisscross pattern. A surrounding panel (2) surrounds and adheres to the outer edge of the concrete slab (1); the reinforcing bars (11) and the steel pipes (12) are both fixedly connected to the surrounding panel (2), and the surrounding panel (2) has multiple through holes corresponding to and communicating with the steel pipes (12); and Multiple tie rods (3) are slidably connected to multiple steel pipes (12) in a one-to-one correspondence; both ends of the tie rods (3) extend to the outside of the enclosure (2), and one end of the tie rods (3) is connected to the enclosure (2) through the adjusting member (4), and the other end of the tie rods (3) is used to connect to the structural steel cage or to connect to the enclosure (2) of another concrete slab (1) through the steel pipe (12) inside the adjacent concrete slab (1), so that the two adjacent concrete slabs (1) are connected into a whole; The adjusting component (4) can drive the tie rod (3) to slide relative to the steel pipe (12) to adjust the distance between the concrete slab (1) and the structural steel cage or another concrete slab (1); The adjusting component (4) includes: The screw (41) is coaxially and fixedly connected to the end of the pull rod (3); and An adjusting nut (42) is located outside the enclosure (2) and coaxially sleeved on the screw (41), and is threadedly connected to the screw (41); the adjusting nut (42) abuts against the enclosure (2) on the side facing the concrete slab (1).

2. The assembled composite panel as described in claim 1, characterized in that, The tie rod (3) has a bend (31) at one end facing away from the adjusting member (4), the bend (31) being used to connect with the structural steel cage or the enclosure (2) on another concrete slab (1).

3. The assembled composite panel as described in claim 1, characterized in that, The two adjacent tie rods (3) are arranged longitudinally or laterally with opposite orientations.

4. The assembled composite panel as described in claim 1, characterized in that, The upper side of the concrete slab (1) has an installation groove (5), and there are multiple channels (51) connecting the installation groove (5) and the outer edge of the concrete slab (1). The installation groove (5) and the channels (51) are used to install water and electricity pipes.

5. The assembled composite panel as described in claim 4, characterized in that, The enclosure (2) has multiple notches (21) that communicate with the multiple channels (51).

6. The assembled composite panel as described in claim 4, characterized in that, The channel (51) has multiple limiting rods (52) arranged axially; when the water and electricity pipes are installed in the installation groove (5), the limiting rods (52) are located on the upper side of the water and electricity pipes.

7. The assembled composite panel as described in claim 1, characterized in that, The upper side of the concrete slab (1) has multiple irregular grooves (6) for improving the roughness of the upper side of the concrete slab (1).

8. A composite laminated plate, characterized in that, The assembled composite panel includes any one of claims 1-7.

9. A method for constructing composite slabs, based on the assembled composite slab according to any one of claims 1-7, characterized in that, Includes the following steps: A. Check the integrity and specifications of each component of the assembled composite slab, and confirm that the steel bars (11) and steel pipes (12) inside the concrete slab (1) are firmly fixed to the surrounding slab (2); B. Hoist the concrete slab (1) to the designed installation position, fix the concrete slab (1) with temporary supports, adjust the level and elevation of the concrete slab (1) to complete the preliminary positioning; C. Insert the tie rods (3) one by one into the steel pipes (12) inside the concrete slab (1), so that both ends of the tie rods (3) extend outside the enclosure (2), and install the adjusting component (4) at the end of the tie rods (3) that extends out of the enclosure (2); D. The other end of the tie rod (3) extending out of the enclosure (2) is fixed to the structural steel cage by binding, welding or bolting, or the steel pipe (12) passing through the adjacent concrete slab (1) is connected to the enclosure (2) of the other concrete slab (1); E. Operate the adjusting component (4) to drive the tie rod (3) to slide axially within the steel pipe (12), adjust the distance between the concrete slab (1) and the structural steel cage or another concrete slab (1) to the design value, and simultaneously calibrate the overall flatness and edge alignment of multiple concrete slabs (1); F. Lock the adjusting member (4) to prevent the tie rod (3) from sliding, and reinforce the connection nodes of the tie rod (3) with the structural steel cage or another enclosure plate (2) and the joints of the adjacent concrete slabs (1) by welding or bolting to ensure the rigidity of the nodes; G. Clean the surface and joints of the concrete slab (1), pour the post-cast concrete composite layer and vibrate it to compact it, cover it with moisturizing material and cure it until the concrete strength reaches the design requirements, then remove the temporary support.

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