Low-steel-content cavity system connecting structure of precast concrete component

Abstract

The utility model relates to the technical field of constructional engineering, and discloses a low-steel-content cavity system connecting structure of a concrete prefabricated component, which comprises two peripheral components as a peripheral protective layer of the prefabricated component, and a cavity structure is formed in each peripheral component; the truss steel bars are arranged between the two peripheral components and connected to the peripheral components so as to enhance the overall strength and stability of the prefabricated component; wherein the truss steel bars are formed by connecting structural wall vertical bars, inclined web bars and horizontal bars to form a stable truss structure, so that the use amount of the steel bars is reduced, and the layout of the steel bars is optimized. According to the low-steel-amount cavity system connecting structure of the concrete prefabricated part, the use amount of steel bars is reduced, the vibration effect is optimized, and the construction problem is solved.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a low-steel-volume cavity system connection structure for precast concrete components. Background Technology

[0002] As the global construction industry continues to pursue efficiency, environmental protection, and sustainable development, prefabricated construction, as an innovative building model, is rapidly gaining popularity worldwide. Prefabricated construction involves the pre-production, processing, and assembly of building components in factories, followed by the rapid assembly of finished or semi-finished prefabricated components at the construction site. This greatly improves the efficiency and quality control of construction. Prefabricated components, as the core components of prefabricated construction, come in a wide variety of types, including but not limited to prefabricated walls, prefabricated floor slabs, prefabricated stairs, and prefabricated balconies. These components are produced in factories using advanced production equipment and technology in a standardized and meticulous manner, ensuring the dimensional accuracy, quality stability, and superior performance of the components.

[0003] Cavity (overlapping, shell, etc.) systems in building engineering aim to improve structural efficiency and space utilization. However, their implementation faces technical challenges such as high steel content, dense reinforcement, and difficulties in vibration. High steel content increases costs, and dense reinforcement exacerbates construction difficulties, restricts vibration operation space, and easily leads to internal defects in concrete such as hollow areas and honeycomb pitting. The special nature of cavity structures restricts vibration operations, and insufficient vibration at the bottom and corners affects the density and strength of concrete. It may also cause quality problems such as formwork bulging and deformation. These problems not only damage the quality of the project but also increase the cost and time of subsequent rectification, prolong the project cycle, and increase the input of human and material resources, putting dual pressure on the economic and social benefits of the project. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this utility model is to provide a low-steel-volume cavity system connection structure for precast concrete components that reduces the amount of steel reinforcement used, optimizes the vibration effect, and avoids construction difficulties.

[0006] (II) Technical Solution

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0008] A low-steel-volume cavity system connection structure for precast concrete components includes:

[0009] There are two outer components, which serve as an outer protective layer for the prefabricated components and form a cavity structure inside.

[0010] Truss reinforcement is placed between two outer members and connected to the outer members to enhance the overall strength and stability of the precast components;

[0011] The truss reinforcement is composed of vertical bars, diagonal web bars, and horizontal bars of the structural wall, forming a stable truss structure to reduce the amount of steel used and optimize the steel layout.

[0012] Based on the above technical solution, the present invention can be further improved as follows.

[0013] Furthermore, the vertical reinforcement bars of the structural wall are arranged vertically along the outer components, and the diagonal web reinforcement bars intersect and connect with the vertical reinforcement bars of the structural wall to form a stable support system in three-dimensional space.

[0014] Furthermore, the diagonal web reinforcement is composed of continuously bent connecting steel bars, wherein the bending angle of the diagonal web reinforcement is no greater than 90 degrees, and a single diagonal web reinforcement corresponds to two structural wall vertical reinforcements, with the two structural wall vertical reinforcements respectively connected at the crest and trough of the diagonal web reinforcement.

[0015] Furthermore, the number of horizontal bars is set to several, distributed on the vertical bars of the structural wall, wherein the horizontal bars are connected to the vertical bars of the structural wall.

[0016] Furthermore, the peripheral components are either prefabricated structural walls or formwork.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] This invention employs an outer protective layer with an internal cavity structure, incorporating a truss reinforcement arrangement. This feature directly addresses the issues of high steel content and dense reinforcement. The truss reinforcement is meticulously connected from vertical, diagonal, and horizontal reinforcement bars, forming a stable and efficient truss structure. This design significantly reduces the amount of steel used, effectively lowering material costs, while ensuring structural strength and stability. Furthermore, its rational layout avoids excessive reinforcement density, providing greater operational space for vibration operations during construction. Specifically, the stable structure of the truss reinforcement more effectively transfers and distributes loads, reducing redundant reinforcement added by conservative designs, thus achieving the goal of low steel content. Simultaneously, its unique layout reduces... The mutual interference between the reinforcing bars allows the vibrator to penetrate deeper into the concrete for thorough compaction, effectively solving the problem of difficult compaction. This not only improves the density and strength of the concrete but also significantly reduces the risk of quality defects such as hollow areas and honeycomb surfaces caused by insufficient compaction. In addition, the use of truss reinforcement simplifies the construction process, reduces construction difficulty, and thus improves construction efficiency. At the same time, the structure also has good maintainability and replaceability, providing convenience for later building maintenance, renovation, and upgrades. In summary, the proposed low-steel-content cavity system connection structure for precast concrete components, through its unique technical characteristics, effectively solves the technical problems mentioned in the background technology, such as high steel content, dense reinforcement arrangement, and difficult compaction, achieving a comprehensive improvement in structural efficiency, construction efficiency, and economic benefits. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall connection structure of this utility model;

[0021] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the image;

[0022] Figure 3 This is a schematic diagram of the connection structure between the vertical and horizontal reinforcing bars of the structural wall according to this utility model.

[0023] In the diagram: 1. External components; 2. Truss reinforcement; 201. Vertical reinforcement of structural wall; 202. Diagonal web reinforcement; 203. Horizontal reinforcement. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the embodiments, combined Figures 1-3 As shown, this utility model discloses a low-steel-volume cavity system connection structure for precast concrete components.

[0026] There are two outer components 1, which serve as the outer protective layer of the prefabricated components and form a cavity structure inside.

[0027] Truss reinforcement 2 is placed between two outer members 1 and connected to the outer members 1 to enhance the overall strength and stability of the precast components;

[0028] Among them, the truss reinforcement 2 is composed of vertical reinforcement 201, diagonal web reinforcement 202 and horizontal reinforcement 203 of the structural wall, forming a stable truss structure, so as to reduce the amount of steel reinforcement used and optimize the steel reinforcement layout.

[0029] It should also be noted that in this embodiment, the various reinforcing bars can be connected together by welding or wire binding. In this embodiment, the vertical reinforcing bars 201 and the diagonal web reinforcing bars 202 of the structural wall are connected by welding, and the horizontal reinforcing bars 203 are connected to the vertical reinforcing bars 201 of the structural wall by welding. This structure is mainly composed of two outer components 1. These two walls, as the outer protective layer of the prefabricated components, not only provide necessary support and protection for the overall structure, but also form a cavity structure inside. This cavity design aims to improve the space utilization and structural efficiency of the building. In order to further enhance the overall strength and stability of the prefabricated components, this structure cleverly sets up truss reinforcing bars 2 between the two outer components 1. The truss reinforcing bars 2, as a key connection and reinforcement element, are connected to the outer components 1 in a specific way to form a stable whole. Specifically, the truss reinforcing bars 2 are carefully connected by three parts: the vertical reinforcing bars 201, the diagonal web reinforcing bars 202, and the horizontal reinforcing bars 203. These three parts cooperate with each other to form a stable and efficient structure. In the truss structure, the vertical reinforcement 201 of the structural wall serves as the main load-bearing component, arranged parallel between the two outer components 1 to bear loads from the top and sides. The diagonal reinforcement 202 is obliquely connected to the vertical reinforcement 201 at a certain angle, providing additional support and stability to prevent deformation or damage when subjected to external forces. The horizontal reinforcement 203 is arranged along the longitudinal length of the truss structure, tightly connecting the vertical reinforcement 201 and the diagonal reinforcement 202 to form a complete truss system. This truss structure design significantly reduces the amount of steel used, achieving the goal of low steel content, and optimizes the steel reinforcement layout. The stability and efficiency of the truss structure allow for more even stress distribution in precast components under load, improving the overall load-bearing capacity and safety. Furthermore, the rational and scientific steel reinforcement layout provides greater operational space for vibration operations during construction, ensuring thorough compaction of the concrete and improving the quality of the components.

[0030] In addition, to further enhance the crack resistance and overall stability of the diagonal bracing 202, an anti-crack mesh can be laid flat at the bend of the diagonal bracing 202. The anti-crack mesh can be added or removed according to the actual use. This anti-crack mesh is a fine mesh that tightly binds the tiny cracks that may occur inside the concrete, preventing them from developing further. It also enhances the interfacial bond between the diagonal bracing and the concrete through its high strength and excellent toughness, making the two work more closely together. The choice of material for the anti-crack mesh is also crucial. The specific material can be fiber mesh, glass fiber mesh, metal mesh, or other materials that can achieve the same effect. These materials can not only effectively prevent concrete from cracking, but also provide additional tensile support when cracks appear, enhance the integrity of the precast structure, limit the range of crack expansion, and thus protect the structure from further damage. In addition, these materials also have good environmental adaptability and can maintain stable performance under various harsh conditions, ensuring the safety and durability of the structure.

[0031] The fabrication method of the low-steel-volume cavity system connection structure of this precast concrete component is briefly described below:

[0032] First, the truss reinforcement 2 is prefabricated and assembled. According to the design requirements, the vertical reinforcement 201 of the structural wall is arranged vertically. Then, the diagonal web reinforcement 202 is continuously bent at a bending angle of no more than 90 degrees and welded to the vertical reinforcement 201 of the structural wall. This ensures that two vertical reinforcements 201 of the structural wall are welded to the crest and trough of each diagonal web reinforcement 202, thereby constructing a stable support system in three-dimensional space. Next, the horizontal reinforcement 203 is distributed on the vertical reinforcement 201 of the structural wall and welded to the vertical reinforcement 201 of the structural wall to form a complete truss structure 2.

[0033] Subsequently, the assembled truss reinforcement 2 is placed stably on the workbench, ensuring it is parallel to the ground and in a stable position. Then, the first outer component 1 is poured on one side. During the pouring process, attention should be paid to the vibration of the concrete to ensure that the concrete is fully filled and compacted, and tightly bonded to the truss reinforcement 2. After the first outer component 1 reaches the design strength, curing treatment is carried out.

[0034] Next, the overall structure is rotated, and concrete is poured again on the other side of the truss reinforcement 2 to create the second outer component 1. Similarly, during the pouring process, attention must be paid to the vibration and compaction of the concrete to ensure a good bond between the second outer component 1 and the truss reinforcement 2 and the first outer component 1.

[0035] After the second outer component 1 reaches the strength required by the design, overall curing treatment is carried out. Finally, the two outer components 1 and the truss steel bars 2 together form a prefabricated component of a low-steel-volume cavity connection structure, forming an internal cavity structure, which not only improves the strength and stability of the structure, but also optimizes the amount and layout of steel bars.

[0036] In a preferred embodiment, this utility model can be further configured as follows: Figures 1 to 3 As shown; the vertical reinforcement 201 of the structural wall is arranged vertically along the outer component 1, and the diagonal web reinforcement 202 intersects and connects with the vertical reinforcement 201 of the structural wall, forming a stable support system in three-dimensional space. The arrangement of the vertical reinforcement 201 along the outer component 1 in this direction allows the vertical reinforcement to directly bear the vertical load from above and effectively transfer it to the foundation or other supporting structures. This arrangement makes full use of the tensile properties of the vertical reinforcement, ensuring the stability and safety of the precast component in the vertical direction. At the same time, the diagonal web reinforcement 202 intersects and connects with the vertical reinforcement 201 of the structural wall at a specific angle. This cross-connection... The connection method forms a stable support system in three-dimensional space. The main function of the diagonal bracing 202 is to provide additional diagonal support, enhancing the overall stiffness and lateral displacement resistance of the truss structure. When the precast components are subjected to lateral loads or wind loads, the diagonal bracing 202 can effectively resist these external forces, preventing lateral deformation or damage to the structure. In addition, the intersection of the diagonal bracing 202 and the vertical reinforcement 201 of the structural wall also promotes the uniform distribution of stress. Under load, the vertical reinforcement and diagonal bracing can work together to distribute the stress throughout the truss structure, thereby improving the load-bearing capacity and durability of the structure.

[0037] In a preferred embodiment, this utility model can be further configured as follows: Figures 1 to 3As shown; the diagonal web reinforcement 202 is composed of continuously bent connecting steel bars, wherein the bending angle of the diagonal web reinforcement 202 is no greater than 90 degrees. Each diagonal web reinforcement 202 corresponds to two structural wall vertical reinforcements 201, and the two structural wall vertical reinforcements 201 are respectively connected at the crest and trough of the diagonal web reinforcement 202. The structural wall vertical reinforcements 201 and diagonal web reinforcements 202 can be connected by welding or by binding with steel wire. In this application, the structural wall vertical reinforcements 201 and diagonal web reinforcements 202 are connected by welding. As an important component of the truss structure, the diagonal web reinforcement 202 is designed as a continuously bent connecting steel bar. This design allows the diagonal web reinforcement 202 to form a more complex support path in three-dimensional space, thereby improving the overall stiffness and stability of the structure. At the same time, the bending angle of the diagonal web reinforcement 202 is strictly controlled within the range of no more than 90 degrees. This limitation ensures that the diagonal web reinforcement can maintain sufficient strength and toughness when bearing loads, avoiding premature failure. More importantly, each diagonal web reinforcement... 202 corresponds to two structural wall vertical bars 201. This correspondence allows the diagonal web bars to establish stable connections with both vertical bars simultaneously. In terms of connection method, the two structural wall vertical bars 201 are welded to the crests and troughs of the diagonal web bars 202, respectively. This welding method not only ensures the strength and reliability of the connection, but also makes full use of the bending shape of the diagonal web bars. The welding points at the crests and troughs become the key nodes for force transmission between the diagonal web bars and the vertical bars. They can effectively transfer the tensile or compressive force on the diagonal web bars to the vertical bars, thereby realizing the coordinated work of the entire truss structure. Under load, the diagonal web bars 202 disperse and transmit the force in three-dimensional space through their continuous bending shape and welded connection with the vertical bars. This dispersion and transmission mechanism enables the truss structure to better resist the action of external loads and maintain the stability and safety of the structure. At the same time, due to the optimized design of the bending angle and welding position of the diagonal web bars, the amount of steel used is reasonably controlled, achieving the goal of low steel content.

[0038] In a preferred embodiment, this utility model can be further configured as follows: Figures 1 to 3As shown; several horizontal reinforcing bars 203 are provided and distributed on the vertical reinforcing bars 201 of the structural wall. The horizontal reinforcing bars 203 and the vertical reinforcing bars 201 are interconnected. In this embodiment, the horizontal reinforcing bars 203 are evenly distributed, making the force transmission between the vertical reinforcing bars 201 more uniform. The spacing of the horizontal reinforcing bars 203 can also be set according to actual needs to densify local areas, thereby enhancing the overall structural strength. The horizontal reinforcing bars 203 and the vertical reinforcing bars 201 can be connected by welding or by binding with steel wire. The horizontal reinforcement 203 and the vertical reinforcement 201 of the structural wall are connected by welding. In the low-steel-volume cavity system connection structure of precast concrete components, the horizontal reinforcement 203, as a key connection element, is set to a certain number, and these horizontal reinforcement 203 are evenly distributed on the vertical reinforcement 201 of the structural wall. This layout not only ensures the effective connection between the vertical reinforcement 201 of the structural wall, but also improves the overall stiffness and stability of the entire truss structure by increasing the number of connection points. Specifically, the horizontal reinforcement 203 and the vertical reinforcement 201 of the structural wall are connected by welding. Welding is a high-strength connection method that ensures a firm and reliable connection between the two components. This allows for smooth and stable force transfer under load. Welding not only improves the overall performance of the structure but also simplifies the construction process and reduces construction difficulty. Under load, the horizontal reinforcement 203 and the vertical reinforcement 201 of the structural wall together form a stable force-bearing system. The distribution of the horizontal reinforcement 203 makes the force transfer between the vertical reinforcement 201 more uniform, avoiding damage caused by localized stress concentration. Simultaneously, the sufficient number of horizontal reinforcement 203 effectively disperses and bears external loads, improving the structure's load-bearing capacity and safety. Furthermore, the welded connection between the horizontal reinforcement 203 and the vertical reinforcement 201 enhances the overall integrity of the truss structure. The weld point, as a force transfer node, tightly connects the horizontal reinforcement 203 and the vertical reinforcement 201, forming an inseparable whole. This improved integrity allows the truss structure to maintain better stability and deformation capacity under external loads, thereby improving the structure's durability and service life.

[0039] In a preferred embodiment, this utility model can be further configured as follows: Figures 1 to 3As shown; the outer component 1 is one of a precast structural wall or a formwork. It is explicitly stated that the outer component 1 can be either a precast structural wall or a formwork. This design increases the flexibility of structural design. In actual construction, the use of either a precast structural wall or a formwork as the outer protective layer can be flexibly selected according to project needs, cost considerations, and construction schedule, thereby meeting diverse construction scenarios and requirements. When using a precast structural wall as an outer component, the precast structural wall is manufactured in a factory according to design requirements, possessing definite dimensions, shape, and strength. They are designed to be directly installed in predetermined locations on the building, serving as load-bearing or non-load-bearing components. It can improve construction speed to a certain extent and reduce the amount of wet work on site; improve the safety and hygiene conditions of the construction site; improve the quality and precision of components; facilitate transportation and storage; and achieve a higher level of standardization and industrialized production. When using formwork as an outer component, the formwork is used as a temporary structure or tool to form the shape and size of concrete components. It can be erected and dismantled according to the shape and size of the components during construction. It has high flexibility and customizability and can adapt to various complex shape and size requirements. On-site installation and adjustment are convenient and can be fine-tuned according to the actual situation. It has more advantages than precast walls in the production of small batches or special-shaped components.

[0040] The specific working principle of the low-steel-volume cavity system connection structure of the present invention for precast concrete components is as follows:

[0041] The low-steel-volume cavity system connection structure of this precast concrete component achieves high efficiency, stability, and economy through the coordinated work of its carefully designed components. Firstly, the outer component 1, acting as the outer protective layer of the precast component, not only provides necessary structural support but also forms a cavity structure within it. This design improves space utilization and facilitates subsequent construction. To further enhance the overall strength and stability of the precast component, truss reinforcement 2 is cleverly placed between the two outer components 1 and tightly connected to them. Truss reinforcement 2 consists of three parts: structural wall vertical reinforcement 201, diagonal web reinforcement 202, and horizontal reinforcement 203. These three parts are interconnected to form a stable truss structure. The structural wall vertical reinforcement 201 is arranged vertically along the outer component 1, bearing the main vertical load, and is connected to the horizontal reinforcement 203 and diagonal web reinforcement 202 by welding, forming a stable load-bearing system. The diagonal web reinforcement 202, as a key element in the truss structure, adopts... Composed of continuously bent connecting steel bars with a bending angle not exceeding 90 degrees, this design allows the diagonal web bars 202 to form complex support paths in three-dimensional space, intersecting and connecting with the structural wall vertical bars 201 to form a stable three-dimensional support system. Each diagonal web bar 202 corresponds to two structural wall vertical bars 201 and is connected at the crests and troughs of the diagonal web bars by means of steel wire binding. This connection method ensures the uniform transmission and distribution of force in three-dimensional space. The number of horizontal bars 203 is set to several, distributed on the structural wall vertical bars 201, and welded together with the structural wall vertical bars 201. This distributed connection method not only improves the overall stiffness of the truss structure, but also optimizes the layout of the steel bars and reduces the amount of steel bars used. The horizontal bars 203, as connecting elements, tightly connect the structural wall vertical bars 201 and the diagonal web bars 202 together to form a complete truss system, ensuring the stability and safety of the precast components when bearing loads.

[0042] In summary, the low-steel-volume cavity system connection structure of this precast concrete component achieves the goals of high efficiency, stability, and economy through the coordinated work of the outer component 1 and the truss reinforcement 2. This design not only improves the overall performance and stability of the precast component, but also reduces the amount of steel used and optimizes the steel layout, providing a more advanced structural solution for modern buildings.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-steel-volume cavity system connection structure for precast concrete components, characterized in that, include: The outer component (1) consists of two components, which serve as the outer protective layer of the prefabricated component and form a cavity structure inside. Truss reinforcement (2) is placed between two outer members (1) and connected to the outer members (1) to enhance the overall strength and stability of the precast components; The truss reinforcement (2) is composed of vertical reinforcement (201), diagonal reinforcement (202) and horizontal reinforcement (203) of the structural wall, forming a stable truss structure to reduce the amount of steel reinforcement used and optimize the steel reinforcement layout.

2. The low-steel-volume cavity system connection structure for precast concrete components according to claim 1, characterized in that, The vertical reinforcement (201) of the structural wall is arranged vertically along the outer component (1), and the diagonal web reinforcement (202) intersects and connects with the vertical reinforcement (201) of the structural wall to form a stable support system in three-dimensional space.

3. The low-steel-volume cavity system connection structure for precast concrete components according to claim 2, characterized in that, The diagonal web reinforcement (202) is composed of continuously bent connecting steel bars, wherein the bending angle of the diagonal web reinforcement (202) is no greater than 90 degrees, and a single diagonal web reinforcement (202) corresponds to two structural wall vertical reinforcements (201), and the two structural wall vertical reinforcements (201) are respectively connected at the crest and trough of the diagonal web reinforcement (202).

4. The low-steel-volume cavity system connection structure for precast concrete components according to claim 1, characterized in that, The number of horizontal bars (203) is set to several, which are distributed on the vertical bars (201) of the structural wall, wherein the horizontal bars (203) and the vertical bars (201) of the structural wall are connected together.

5. The low-steel-volume cavity system connection structure for precast concrete components according to claim 1, characterized in that, The peripheral component (1) is either a prefabricated structural wall or a formwork.

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