A UHPC cavity wall with pre-embedded pipeline pipes

Abstract

This utility model discloses a UHPC cavity wall with pre-embedded conduit, belonging to the technical field of UHPC cavity walls. The utility model includes a junction box and a conduit connected to the junction box. Its features include an outer leaf plate and an inner leaf plate, with reinforcing ribs positioned between the outer and inner leaf plates to divide the space between them into multiple closed cavities; the reinforcing ribs have through-holes for the conduit to pass through; the junction box is installed within the closed cavities; and the inner leaf plate also has through-holes for the conduit to pass through. This utility model is used for the installation of pre-embedded conduit systems.

Description

Technical Field

[0001] A UHPC cavity wall with pre-embedded pipeline pipes is used for the installation of pre-embedded pipeline systems, belonging to the field of building engineering technology. Background Technology

[0002] Ultra-high performance concrete (UHPC), as an emerging cement-based composite material, possesses extremely high strength, excellent toughness, and outstanding durability. Its dense microstructure gives it near-impermeability, and its resistance to chloride ion penetration and carbonation far surpasses that of ordinary concrete. Applying UHPC to precast cavity wall panels can significantly reduce panel thickness and weight, while simultaneously addressing the cracking problem of traditional wall panels, enabling designs with large spans, thin walls, and high strength. However, existing technologies have the following technical challenges: Traditional UHPC manufacturing involves post-installation slotting to install and fix the final terminal conduits, switch boxes, socket boxes, and branch lines connecting the pre-embedded main pipes to the terminal points. This not only wastes the excellent overall performance of UHPC, but also makes the extremely high strength of UHPC itself a huge challenge for post-installation mechanical slotting, resulting in high costs and extremely low efficiency.

[0003] In view of this, this application proposes a UHPC cavity wall with pre-embedded pipeline pipes based on the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a UHPC cavity wall with pre-embedded pipelines, which solves the problem of traditional UHPC manufacturing using post-installation grooving to install and fix the final terminal conduits, switch boxes, socket boxes, and branch lines connecting the pre-embedded main pipelines and the terminal points. This not only wastes the excellent overall performance of UHPC, but also brings great difficulties to the subsequent mechanical grooving due to the extremely high strength of UHPC itself, resulting in high costs and extremely low efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A UHPC cavity wall with pre-embedded conduit pipes includes a junction box and conduit pipes connected to the junction box. It is characterized by including an outer leaf plate and an inner leaf plate, and a reinforcing rib disposed between the outer leaf plate and the inner leaf plate to divide the space between the outer leaf plate and the inner leaf plate into multiple closed cavities. The reinforcing rib is provided with a wire-passing groove for threading conduit; The junction box is installed inside a closed cavity; The inner leaf plate is also provided with a through hole for the cable tube to pass through.

[0006] Furthermore, the reinforcing ribs have a wavy structure; or The reinforcing ribs are multiple interconnected V-shaped or W-shaped structures.

[0007] Furthermore, the outer blade, inner blade, and reinforcing ribs are integrally cast; or The reinforcing rib is fixedly mounted on the outer blade plate. The inner blade plate and the outer blade plate are provided with through holes and are fixed together by bolts and nuts. The inner blade plate and the reinforcing rib are in contact with each other.

[0008] Furthermore, the enclosed cavity is filled with thermal insulation material.

[0009] Furthermore, steel sheets are embedded inside the reinforcing ribs.

[0010] Furthermore, the inner blade plate and the outer blade plate are provided with tongue and groove at their four corners, and bolt sleeves for positioning the inner blade plate and the outer blade plate are pre-embedded between the tongue and groove, as well as bolts set in the bolt sleeves to fix the positioning inner blade plate and the outer blade plate to the main structure or adjacent structure.

[0011] Furthermore, the top of the inner blade plate and / or the outer blade plate is pre-embedded with vertically penetrating injection holes.

[0012] Compared with the prior art, the advantages of this utility model are: I. This utility model involves first positioning and installing a pre-embedded pipeline system (including junction boxes and conduits, etc.). Specifically, the outer leaf plate, inner leaf plate, reinforcing ribs, and conduits passing through the reinforcing ribs, as well as the junction boxes connected to the conduits in the enclosed cavity, are first positioned and installed in the designated locations. Then, ultra-high performance concrete (UHPC) is poured, or a portion is poured first, followed by the installation of junction boxes and conduits. In other words, by setting up conduits, junction boxes, and reinforcing ribs, the conduits are arranged within the enclosed cavity channels formed by the reinforcing ribs. The junction boxes are directly fixed to the side of the reinforcing ribs or a specific platform. Adaptable conduits are pre-cut into the reinforcing ribs. The conduit channels allow the conduits to pass smoothly and neatly through the reinforcing ribs, crisscrossing and connecting between different enclosed cavities, and finally all converging into the junction box. On-site workers only need to perform simple wiring operations to complete the connection of all terminal equipment, completely avoiding the difficult, inefficient and structurally damaging mechanical grooving operations on the ultra-high strength UHPC wall. This avoids the problem of first pouring ultra-high performance concrete UHPC and then having to groove it later, and avoids wasting the excellent overall performance of UHPC. It not only reduces costs but also improves efficiency. II. The reinforcing ribs of this utility model are defined as wave-shaped structures or multiple connected V-shaped or W-shaped structures, which can provide good support for the outer blades and inner blades. Third, this utility model limits the inner leaf plate and the outer leaf plate to be movable and cooperate, so that the conduit can be threaded through the reinforcing rib on the outer leaf plate and the conduit box can be installed in the closed cavity formed by the reinforcing rib on one side of the inner leaf plate. Then the inner leaf plate and the outer leaf plate are cooperated, and the conduit that needs to pass through the inner leaf plate is passed through the through hole. IV. This utility model, by setting tongue and groove, bolt sleeve and bolt, the tongue and groove around the perimeter allows the inner leaf plate and outer leaf plate to be precisely engaged and positioned, and the bolt sleeve provides a strong and concealed connection point for subsequent dry connection. The bolt can realize a fast and reliable connection between the wall panel and the main structure or other wall panels. V. The key to achieving the "assembled integral" structure is the vertical injection hole provided on the inner and outer leaf plates of this utility model. After all the wall panels (inner and outer leaf plates) are installed in place, high-strength grout is injected into the closed cavity inside the wall panel or the vertical joint formed with the adjacent wall panel through the hole. The grout will harden and firmly bond the individual wall panels in both vertical and horizontal directions into a uniformly stressed integral wall, thereby meeting the stringent requirements of high-rise buildings for structural integrity and seismic resistance. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the reinforcing ribs in this utility model; Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle; Figure 5 This is a schematic diagram of the conduit of this utility model; In the diagram: 1. Outer blade; 2. Inner blade; 3. Reinforcing rib; 4. Enclosed cavity; 5. Conduit; 6. Junction box; 7. Wire channel; 8. Insulation material; 9. Steel sheet; 10. Bolt sleeve; 11. Injection hole. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0016] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0017] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first," "second," and "third" are used only for distinguishing descriptions and should not be interpreted as indicating or implying relative importance.

[0019] Furthermore, the use of terms such as "horizontal," "vertical," and "suspended" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0020] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0022] Example 1 To address the issue of traditional UHPC manufacturing methods that rely on post-installation slotting for fixing final terminal conduits, switch boxes, socket boxes, and branch lines connecting pre-embedded main pipes to terminal points, which not only wastes the excellent overall performance of UHPCs but also presents significant challenges to subsequent mechanical slotting due to the inherent high strength of UHPCs, resulting in high costs and extremely low efficiency. Figure 1-5As shown, a UHPC cavity wall with pre-embedded conduit is provided, including a junction box 6 and a conduit 5 connected to the junction box 6. It includes an outer leaf plate 1 and an inner leaf plate 2 integrally cast, and a reinforcing rib 3 disposed between the outer leaf plate 1 and the inner leaf plate 2 to divide the outer leaf plate 1 and the inner leaf plate 2 into multiple closed cavities 4. The reinforcing rib 3 is provided with a through groove 7 for passing through the conduit 5. The junction box 6 is installed in the closed cavity 4. The inner leaf plate 2 is also provided with a through hole to allow the conduit 5 to pass through.

[0023] In practice, the conduit 5 (i.e., the pre-embedded conduit) is arranged in the closed cavity 4 channel formed by the reinforcing ribs 3. The junction box 6 is directly fixed on the side of the reinforcing ribs 3 or on a specific platform (such as a mounting plate in the closed cavity). The reinforcing ribs 3 are pre-cut with wire grooves 7 adapted to the conduit 5, so that the conduit 5 can pass smoothly and neatly through the reinforcing ribs 3, and pass through the perforations on the inner leaf plate 2 when necessary. It can crisscross and connect between different closed cavities 4, and finally all flow into the junction box 6. The workers on the construction site only need to perform simple wire pulling operations to complete the connection of all terminal equipment, completely avoiding the difficult, inefficient and structurally damaging mechanical grooving operations on the ultra-high strength UHPC wall.

[0024] When the outer leaf plate 1, inner leaf plate 2, and reinforcing rib 3 are integrally cast, during the factory prefabrication production stage, all pre-embedded pipeline systems, including conduits 5 and junction boxes 6, are first positioned and installed in the mold. Then, ultra-high performance concrete (UHPC) is poured. Due to its excellent fluidity and self-compacting properties, the UHPC slurry can perfectly wrap all pre-embedded parts and fill the mold, forming an integral structure composed of the outer leaf plate 1, inner leaf plate 2, and reinforcing rib 3 as the core connection.

[0025] The reinforcing rib 3 is fixedly mounted on the outer leaf plate 1. The inner leaf plate 2 is movably fixed to the outer leaf plate 1. When the inner leaf plate 2 and the reinforcing rib 3 are in contact, the reinforcing rib 3 and the outer leaf plate 1 are first cast to facilitate the threading of conduits through the reinforcing rib 3. A junction box is installed in the closed cavity 4 formed by the reinforcing rib on one side of the inner leaf plate 2. Then, the cast inner leaf plate 2 and the outer leaf plate 1 (both have through holes) are connected by bolts and nuts. At the same time, the conduit that needs to pass through the inner leaf plate is threaded through the through hole. If the conduit 5 is threaded later, a flexible connection can be made at the corresponding position when corners are required. Of course, other connection methods are also possible. It should be noted that the mold used during casting must meet the application requirements.

[0026] Example 2 Based on Example 1, such as Figure 2 , 3As shown, the reinforcing rib 3 is a wave-shaped structure; or the reinforcing rib 3 is a plurality of interconnected V-shaped or W-shaped structures. The structure of the reinforcing rib 3 imitates the mechanical principle of trusses, firmly connecting the inner and outer leaf plates 1 into a whole unit that works together to bear the load, which greatly improves the shear resistance, bending resistance and deformation resistance of the wall panel, and gives the originally weak cavity structure extremely high overall stiffness.

[0027] Example 3 Based on Example 2, such as Figure 2 As shown, the enclosed cavity 4 is filled with thermal insulation material 8. After the UHPC wall panel is cast or fixed, thermal insulation material 8 is simultaneously injected into the enclosed cavities 4 of the inner leaf plate 2 and the outer leaf plate 1 to form a double insulation layer structure, so that the wall has both internal and external thermal insulation functions. The thermal insulation material 8 on the inner side of the outer leaf plate 1 mainly blocks the influence of external temperature changes on the indoor environment, while the thermal insulation material 8 on the inner leaf plate 2 effectively prevents indoor temperature loss.

[0028] Example 4 Based on Example 6, such as Figure 4 As shown, the reinforcing rib 3 is embedded with steel sheet 9. When the wall is subjected to load, the steel sheet 9 mainly bears tensile stress, while the UHPC material mainly bears compressive stress. The two materials complement each other, significantly improving the tensile strength and shear resistance of the reinforcing rib 3.

[0029] Example 5 Based on Embodiment 4, tongue and groove joints are provided at the four corners of both the inner leaf plate 2 and the outer leaf plate 1. Bolt sleeves 10 for positioning the inner leaf plate 2 and the outer leaf plate 1 are pre-embedded between the tongue and groove joints, and bolts are installed in the bolt sleeves 10 to fix them to the main structure or adjacent structures. The tongue and groove joints on all four sides allow the inner leaf plate 2 and the outer leaf plate 1 to be precisely engaged and positioned or to facilitate subsequent installation and fixing. The bolt sleeves 10 provide a strong and concealed connection point for subsequent dry connections, and high-strength bolts can be used to achieve a quick and reliable connection between the wall panel and the main structure or other wall panels. The bolt sleeve 10 also belongs to the pre-embedded pipeline system. When the outer leaf plate 1, inner leaf plate 2 and reinforcing rib 3 are integrally cast, the bolt sleeve 10 needs to be positioned and installed first, and then the outer leaf plate 1, inner leaf plate 2 and reinforcing rib 3 are cast. When the inner leaf plate 2 and the outer leaf plate 1 are movably fixed and cooperate, the bolt sleeve 10 also needs to be positioned and installed in the designated position before the outer leaf plate 1 and reinforcing rib 3 are cast. The tongue and groove on the inner leaf plate 2 will then cooperate with the bolt sleeve 10.

[0030] Example 6 Based on Example 5, the top of the inner leaf plate 2 and / or the outer leaf plate 1 is pre-embedded with a vertically penetrating injection hole 11. After all the wall panels are installed in place, high-strength grout is injected into the cavities inside the wall panels or into the vertical joints formed with adjacent wall panels through these holes. This grout hardens and firmly bonds the individual precast wall panels into a uniformly stressed integral wall in both the vertical and horizontal directions, thereby meeting the stringent requirements of high-rise buildings for structural integrity and seismic resistance.

[0031] Working Principle: In the factory prefabrication stage, all pre-embedded pipeline systems, including conduits 5, junction boxes 6, and bolt sleeves 10, are first positioned and installed in the mold. Then, ultra-high performance concrete (UHPC) is poured. Due to its excellent fluidity and self-compacting properties, the UHPC grout perfectly encapsulates all pre-embedded components and fills the mold, forming an integral structure composed of outer leaf plates 1, inner leaf plates 2, and reinforcing ribs 3 as the core connection. The continuous structure of the reinforcing ribs 3 mimics the mechanical principles of trusses, firmly connecting the inner and outer leaf plates 1 into a cohesive unit that bears the load, greatly improving the shear, bending, and deformation resistance of the wall panel. This allows the originally weak cavity structure to have extremely high overall rigidity. After the UHPC wall panel is cast, insulation material 8 is simultaneously injected into the closed cavities 4 of the inner leaf plate 2 and the outer leaf plate 1 to form a double insulation layer structure. This enables the wall to have both internal and external double insulation functions. The insulation material 8 on the inner side of the outer leaf plate 1 mainly blocks the influence of external temperature changes on the indoor environment, while the insulation material 8 on the inner leaf plate 2 effectively prevents the loss of indoor temperature. When the wall is under load, the steel sheet 9 mainly bears tensile stress, and the UHPC material mainly bears compressive stress. The two materials complement each other, significantly improving the tensile strength and shear strength of the reinforcing rib 3.

[0032] The conduit 5 is arranged in the closed cavity 4 channel formed by the reinforcing ribs 3. The junction box 6 is directly fixed on the side of the reinforcing ribs 3 or a specific platform. The reinforcing ribs 3 are pre-cut with wire grooves 7 adapted to the conduit 5, so that the conduit 5 can pass through the reinforcing ribs 3 smoothly and neatly, and achieve crisscrossing and connection between different closed cavities 4, and finally all converge into the junction box 6. The workers on the construction site only need to perform simple wire pulling operations to complete the connection of all terminal equipment, completely avoiding the difficult, inefficient and structurally damaging mechanical grooving operations on the ultra-high strength UHPC wall. The tongue and groove joints around the perimeter allow for precise interlocking and positioning between the inner leaf plate 2 and the outer leaf plate 1. The bolt sleeve 10 provides a robust and concealed connection point for subsequent dry connections. High-strength bolts enable quick and reliable connections between the wall panel and the main structure or other wall panels. Furthermore, the vertical injection hole 11 pre-embedded at the top of the wall panel is key to achieving the "assembled integral" structure. After all wall panels are installed, high-strength grout is injected into the cavities inside the wall panel or into the vertical joints formed with adjacent wall panels through this hole. This grout hardens and firmly bonds the individual prefabricated wall panels in both vertical and horizontal directions into a uniformly stressed integral wall, thereby meeting the stringent requirements of high-rise buildings for structural integrity and seismic resistance.

Claims

1. A UHPC cavity wall with pre-embedded conduit, comprising a junction box (6) and a conduit (5) connected to the junction box (6), characterized in that, Includes an outer blade (1) and an inner blade (2), and a reinforcing rib (3) disposed between the outer blade (1) and the inner blade (2) to separate the outer blade (1) and the inner blade (2) into multiple closed cavities (4); The reinforcing rib (3) is provided with a wire groove (7) for threading the conduit (5). The junction box (6) is installed inside the enclosed cavity (4); The inner leaf plate (2) is also provided with a through hole through which the cable tube (5) passes.

2. A UHPC cavity wall with pre-embedded pipelines as described in claim 1, characterized in that, The reinforcing rib (3) has a wavy structure; or The reinforcing rib (3) is a plurality of interconnected V-shaped or W-shaped structures.

3. A UHPC cavity wall with pre-embedded pipelines as described in claim 1, characterized in that, The outer leaf plate (1), inner leaf plate (2), and reinforcing rib (3) are integrally cast; or The reinforcing rib (3) is fixedly installed on the outer leaf plate (1). The inner leaf plate (2) and the outer leaf plate (1) are provided with through holes and are fixed together by bolts and nuts. The inner leaf plate (2) and the reinforcing rib (3) are in contact with each other.

4. A UHPC cavity wall with pre-embedded pipelines as described in claim 1, characterized in that, The enclosed cavity (4) is filled with thermal insulation material (8).

5. A UHPC cavity wall with pre-embedded pipeline pipes according to claim 1, characterized in that, The reinforcing rib (3) is embedded with a steel sheet (9).

6. A UHPC cavity wall with pre-embedded pipelines according to claim 3, characterized in that, The inner leaf plate (2) and the outer leaf plate (1) are provided with tongue and groove at their four corners. A bolt sleeve (10) for positioning the inner leaf plate (2) and the outer leaf plate (1) is pre-embedded between the tongue and groove, and a bolt is provided in the bolt sleeve (10) to fix the positioning inner leaf plate (2) and the outer leaf plate (1) to the main structure or adjacent structure.

7. A UHPC cavity wall with pre-embedded pipeline pipes according to claim 1, characterized in that, The top of the inner leaf plate (2) and / or the outer leaf plate (1) is pre-embedded with vertically penetrating injection holes (11).

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