A double closed cavity monolithic pipe gallery component

Abstract

The application discloses a kind of double closed cavity integral pipe gallery components, including: pipe gallery body, continuous cavity is equipped in pipe gallery body and extends along the outline of pipe gallery body, multiple discontinuous cavities are also equipped in pipe gallery body and are arranged in the direction of interval of outline of pipe gallery body, discontinuous cavity is spaced around the periphery of continuous cavity and extends along the length direction of continuous cavity.In the application, by forming double closed cavity structure in pipe gallery body, the weight of pipe gallery component is effectively reduced.In the meantime of weight reduction, the torsion resistance and bending resistance of pipe gallery body are enhanced by cavity structure, ensuring that lightweight does not sacrifice structural strength, meeting the requirements of overall hoisting and transportation.The application is an integral pipe gallery component, which can be prefabricated and transported without splitting, eliminating the assembly joints of multiple small components in traditional pipe gallery components from design, and the integral structure can better transfer load, avoiding the problems of overall structural stability decline and water seepage caused by weak strength at joint.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, and in particular to a double-closed-cavity integral pipe gallery component. Background Technology

[0002] Underground utility tunnel components are typically constructed from reinforced concrete. Due to the material, these components are quite heavy. Therefore, traditional underground utility tunnel components are usually disassembled into multiple pieces for hoisting and transportation. For example, a prefabricated underground integrated utility tunnel component connection structure (patent number CN207079627U) disassembles the integrated utility tunnel into base plates, side plates, and top plates, prefabricating them as individual components for easier transportation. However, this traditional approach to utility tunnel components has the following drawbacks: disassembling the utility tunnel components into multiple small parts before assembly leads to a decrease in the structural integrity of the utility tunnel and makes the joints between the small components prone to water seepage. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a double-closed-cavity integral pipe gallery component, which aims to solve the problems of the traditional pipe gallery component being disassembled into multiple small components for easy transportation and then assembled, resulting in a decrease in the integrity of the pipe gallery structure and easy water leakage at the joints of the various small components.

[0004] The technical solution adopted by this invention to solve the technical problem is as follows: In a first aspect, embodiments of the present invention provide a double-closed-cavity integral pipe gallery component, comprising: The pipe gallery body has a continuous cavity extending along the outline of the pipe gallery body, and also has a plurality of discontinuous cavities arranged at intervals along the outline of the pipe gallery body. The discontinuous cavities are spaced around the periphery of the continuous cavity and extend along the length of the continuous cavity.

[0005] As a further improved technical solution, the utility tunnel body includes a concrete frame and a reinforcing cage. The reinforcing cage is continuously arranged in the concrete frame along the outline of the concrete frame. The continuous cavity and the discontinuous cavity are respectively arranged in the reinforcing cage and distributed along the outline of the concrete frame.

[0006] As a further improved technical solution, the concrete frame and the steel cage are both in the shape of annular rectangles, and each of the discontinuous cavities is respectively set to correspond one-to-one with each side of the concrete frame, and the spacing between each pair of adjacent discontinuous cavities is uniform.

[0007] As a further improved technical solution, a first grouting hole is provided on the inner side of the concrete frame, and the first grouting hole is connected to the continuous cavity.

[0008] As a further improved technical solution, a second grouting hole is provided on the inner side of the concrete frame, and the second grouting hole is connected to the discontinuous cavity.

[0009] As a further improved technical solution, the aforementioned double-closed-cavity integral pipe gallery component also includes: Ventilation pipe; two ventilation interfaces communicating with the continuous cavity are provided on the inner side of the concrete frame. The two ends of the ventilation pipe are respectively connected to and communicate with one of the ventilation interfaces on two adjacent pipe gallery bodies. The continuous cavities in each of the double-closed-cavity integral pipe gallery components arranged in a row are connected in series and communicated through the ventilation pipe and each of the ventilation interfaces.

[0010] As a further improved technical solution, the surface of the pipe gallery body is provided with an optical fiber lead hole, which extends into the interior of the pipe gallery body for installing an optical fiber sensor.

[0011] As a further improved technical solution, the surface of the pipe gallery body is provided with a plurality of optical fiber lead holes, and each optical fiber lead hole extends to a different part of the pipe gallery body.

[0012] As a further improved technical solution, the steel cage is provided with a mold for forming the continuous cavity and the discontinuous cavity, and the mold is made of water-soluble material.

[0013] As a further improved technical solution, the first grouting hole is located at the corner of the inner side of the concrete frame.

[0014] Compared with the prior art, the embodiments of the present invention have the following advantages: This invention provides a double-closed-cavity integral pipe gallery component, comprising: a pipe gallery body, wherein a continuous cavity extending along the contour of the pipe gallery body is provided within the pipe gallery body, and a plurality of discontinuous cavities spaced apart along the contour of the pipe gallery body are also provided within the pipe gallery body. The discontinuous cavities are spaced around the periphery of the continuous cavity and extend along the length direction of the continuous cavity. In this invention, by setting continuous and discontinuous cavities, a double-closed-cavity structure is formed within the pipe gallery body, effectively reducing the amount of concrete material used and achieving overall weight reduction of the pipe gallery component. The continuous cavity extends along the contour direction of the pipe gallery body and the discontinuous cavities extend along the length direction of the continuous cavity. The scientific arrangement of the double-closed cavities, while reducing weight, enhances the torsional and bending resistance of the pipe gallery body through the cavity structure, ensuring that lightweighting does not sacrifice structural strength and meets the requirements for overall hoisting and transportation. This invention is an integral pipe gallery component that can be prefabricated and transported without disassembly. The design eliminates the assembly joints of multiple small components in traditional pipe gallery components. The integral structure can better transfer loads and avoid the problems of reduced overall structural stability and water seepage caused by weak joints. Attached Figure Description

[0015] Figure 1 A front cross-sectional structural diagram of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 2 This is a first structural schematic diagram of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 3 A schematic diagram of the cross-sectional structure of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 4 A schematic diagram of the vertical cross-section structure of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 5 This invention provides a schematic diagram of the internal structure of a double-closed-cavity integral pipe gallery component. Figure 6 This is a schematic diagram of the second structure of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 7 This is a schematic diagram of the third structure of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 8 A fourth structural schematic diagram of a double-closed-cavity integral pipe gallery component provided by the present invention; Figure 9 This is a schematic diagram of the structure of two double-closed-cavity integral pipe gallery components connected by ventilation pipes, as provided by the present invention.

[0016] In the diagram: 1. Pipe gallery body; 2. Continuous cavity; 3. Discontinuous cavity; 4. Concrete frame; 5. Reinforcing cage; 6. First grouting hole; 7. Second grouting hole; 8. Ventilation pipe; 9. Ventilation interface; 10. Fiber optic cable lead hole. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0018] Example: Please see Figures 1-9 The double-closed-cavity integral pipe gallery component includes: a pipe gallery body 1, a continuous cavity 2 extending along the outline of the pipe gallery body 1, and a plurality of discontinuous cavities 3 arranged at intervals along the outline of the pipe gallery body 1. The discontinuous cavities 3 are spaced around the periphery of the continuous cavity 2 and extend along the length direction of the continuous cavity 2.

[0019] like Figures 1-4 As shown. In one embodiment of the present invention, the double-closed-cavity integral pipe gallery component includes a pipe gallery body 1 with a continuous cavity 2 and a discontinuous cavity 3 inside. The continuous cavity 2 extends along the contour of the pipe gallery body 1 and penetrates the interior of the pipe gallery body 1. The discontinuous cavities 3 are spaced around the periphery of the continuous cavity 2 and extend along the extending direction of the continuous cavity 2, i.e., the discontinuous cavities 3 maintain a certain distance from the continuous cavity 2. Multiple discontinuous cavities 3 are provided, and each discontinuous cavity 3 is arranged at intervals along the contour direction of the pipe gallery body 1. In this embodiment, by setting up a double-closed-cavity (continuous cavity 2 and discontinuous cavity 3) structure within the pipe gallery body 1, the amount of concrete material used is effectively reduced, achieving overall weight reduction of the pipe gallery component. The continuous cavity 2 extends along the outline of the pipe gallery body 1, while the discontinuous cavity 3 extends along the length of the continuous cavity 2. This scientific arrangement of double closed cavities reduces weight while enhancing the torsional and bending resistance of the pipe gallery body 1 through the cavity structure, ensuring that lightweight construction does not sacrifice structural strength and meets the requirements for overall hoisting and transportation. This invention is an integral pipe gallery component that can be prefabricated and transported without disassembly. The design eliminates the assembly joints of multiple small components found in traditional pipe gallery components. The integral structure can better transfer loads and avoids problems such as decreased overall structural stability and water seepage caused by weak joints.

[0020] like Figure 5As shown, the pipe gallery body 1 further includes a concrete frame 4 and a reinforcing cage 5. The reinforcing cage 5 is continuously arranged in the concrete frame 4 along the outline of the concrete frame 4. The continuous cavity 2 and the discontinuous cavity 3 are respectively arranged in the reinforcing cage 5 and distributed along the outline of the concrete frame 4. The continuous cavity 2 and the discontinuous cavity 3 are separated by concrete.

[0021] Specifically, in this embodiment, the reinforcing cage 5 is continuously and uninterruptedly arranged along the contour of the concrete frame 4, replacing the segmented reinforcing cage 5 design in traditional segmented utility tunnels, forming a rigid skeletal network structure surrounding the entire frame. This continuous reinforcing cage 5 structure can effectively transfer the lateral earth pressure, vertical load, and vibration stress borne by the utility tunnel body 1 in the underground environment, avoiding the stress concentration problem at the joints of traditional segmented reinforcing cages 5, and significantly reducing the risk of structural cracking. Both the continuous cavity 2 and the discontinuous cavity 3 are located inside the reinforcing cage 5 and distributed along the contour of the concrete frame 4. This allows the continuous cavity 2 and the discontinuous cavity 3 to be jointly enclosed and constrained by the reinforcing cage 5 and the concrete, avoiding the deformation problem caused by the lack of surrounding support in traditional cavity structures. Traditional utility tunnels often sacrifice structural strength to achieve lightweighting, while this embodiment, through the design of a double closed cavity enclosed by the reinforcing cage 5, achieves lightweighting by reducing the amount of concrete used, while maintaining structural strength with the skeletal support of the reinforcing cage 5. Traditional segmented utility tunnels have a large number of joints due to segmented assembly, leading to the potential for water seepage. In this embodiment, the continuous arrangement of the reinforcing cage 5 allows the concrete frame 4 to be cast in one go, eliminating the need for segmented assembly and fundamentally reducing the number of structural joints. The reinforcing cage 5, continuously arranged along the contour of the concrete frame 4, can be prefabricated as a whole in the factory and then cast together with the concrete to form the pipe gallery body 1, creating standardized pipe gallery components. This prefabricated production mode avoids the cumbersome process of assembling segmented reinforcing cages 5 on-site, reducing on-site construction time and labor costs. Simultaneously, the double-closed-cavity integral pipe gallery component can be directly hoisted and transported to the construction site, eliminating the need for multi-component assembly as with traditional segmented pipe galleries, significantly simplifying the construction process and improving project efficiency.

[0022] Furthermore, both the concrete frame 4 and the reinforcing cage 5 are in the shape of annular rectangles. Each of the discontinuous cavities 3 is respectively provided in a one-to-one correspondence with each side of the concrete frame 4. That is, each of the four sides of the reinforcing cage 5 is provided with a discontinuous cavity 3, and the spacing between each pair of adjacent discontinuous cavities 3 is uniform. The continuous cavity 2 extends along the outline of the concrete frame 4 into an annular rectangle.

[0023] Specifically, compared to other irregular structures, the four sides and four corners of the annular rectangle form a symmetrical load-bearing frame. When lateral pressure is applied by the underground soil, the pressure can be evenly distributed along the four sides of the concrete frame 4, avoiding structural deformation or cracking due to concentrated stress in local areas. Each discontinuous cavity 3 corresponds one-to-one with each side of the concrete frame 4, and the spacing between adjacent discontinuous cavities 3 is uniform, making the weight-reduction areas on the four sides of the pipe gallery body 1 symmetrically distributed, avoiding structural stress imbalance caused by local weight reduction. If traditional cavity layouts are set arbitrarily, it is easy to cause excessive reduction of material on some sides, forming weak stress areas. Moreover, the continuous cavity 2 is annular and rectangular. This symmetrical cavity layout makes the structural mass distribution of the pipe gallery body 1 more uniform. When subjected to loads such as vibration and impact, the structure with uniform mass distribution is less likely to generate additional stress due to local mass imbalance, thereby reducing the structural vibration amplitude and improving structural stability.

[0024] like Figure 6 As shown, in another embodiment of the present invention, a first grouting hole 6 is provided on the inner side of the concrete frame 4, and the first grouting hole 6 is connected to the continuous cavity 2.

[0025] Specifically, multiple first grouting holes 6 are provided, and they are evenly spaced along the length of the inner side of the concrete frame 4. Specifically, several first grouting holes 6 are provided on each of the four inner sides of the concrete frame 4, and the spacing of the first grouting holes 6 on the longer inner side of the concrete frame 4 is greater than the spacing of the first grouting holes 6 on the shorter inner side of the concrete frame 4. Because the cavity length on the longer side is longer, a reasonable spacing is needed to ensure uniform diffusion of the grout. The position of the first grouting holes 6 should avoid the reinforcing cage 5 to prevent drilling from damaging the continuous load-bearing structure of the reinforcing cage 5. After the underground double-closed cavity integral pipe gallery component is installed, if soft soil foundation settlement or uneven ground compression occurs, gaps may easily appear between the pipe gallery body 1 and the surrounding soil, or the pipe gallery body 1 itself may undergo slight deformation. At this time, high-strength grout (such as micro-expansion concrete or epoxy resin grout) is injected into the continuous cavity 2 through the first grouting hole 6. The grout can quickly diffuse along the annular continuous cavity 2, filling the tiny gaps inside the cavity. At the same time, under the action of grouting pressure, the grout can penetrate to the interface between the concrete frame 4 and the steel cage 5, enhancing the bond strength between the two.

[0026] like Figure 7 As shown, the inner side of the concrete frame 4 is further provided with a second grouting hole 7, which is connected to the discontinuous cavity 3.

[0027] Specifically, each of the discontinuous cavities 3 has at least two second grouting holes 7 to ensure that the grout can completely fill the local space of the discontinuous cavity 3. Preferably, each of the two ends of the discontinuous cavity 3 has a second grouting hole 7, and each second grouting hole 7 is respectively located on one of the four inner sides of the concrete frame 4. Although the discontinuous cavity 3 serves as a weight-reducing structure for each side of the concrete frame 4 and is supported by the steel cage 5, local areas may still experience insufficient strength due to concentrated loads. Injecting high-strength grout (such as modified cement grout or fiber-reinforced grout) into the discontinuous cavity 3 through the second grouting hole 7 can specifically strengthen the stress on the sides of the concrete frame 4. For example, when a side of the pipe gallery body 1 is subjected to a large lateral earth pressure, grout is injected into the corresponding discontinuous cavity 3. After solidification, it forms a local support structure on the side, making up for the local material gaps caused by the discontinuous cavity 3 and improving the compressive strength of that side. For the discontinuous cavities 3 adjacent to the corners of the concrete frame 4, grouting can form corner reinforcement nodes, enhancing the torsional resistance of the corner area and avoiding the problem of easy cracking at the corners of traditional pipe galleries. Since the discontinuous cavity 3 is directly connected to the sides of the concrete frame 4, water seepage can directly affect the structural stability of the sides of the concrete frame 4. The second grouting hole 7 enables precise localized waterproofing. When water seeps through concrete cracks near the discontinuous cavity 3 on one side of a concrete frame 4, it is unnecessary to waterproof the entire pipe gallery body 1. Waterproofing grout is injected through the corresponding second grouting hole 7. The grout diffuses within the discontinuous cavity 3 and penetrates into the cracks, quickly sealing the seepage channels. Compared to the overall waterproofing approach of the first grouting hole 6, the second grouting hole 7 reduces the amount of waterproofing grout used, lowering costs. Furthermore, in the scenario of overall pipe gallery reinforcement, the two can work synergistically. For example, when foundation settlement causes uneven stress on the pipe gallery, grout is injected into the continuous cavity 2 through the first grouting hole 6 to reinforce the overall frame. Simultaneously, grout is injected into the discontinuous cavity 3 on the stress-concentrated side through the second grouting hole 7 to strengthen local support, forming a dual reinforcement effect and avoiding the limitations of a single reinforcement method.

[0028] like Figure 8 and Figure 9 As shown, in another embodiment of the present invention, the double-closed-cavity integral pipe gallery component further includes a ventilation pipe 8; two ventilation interfaces 9 communicating with the continuous cavity 2 are provided on the inner side of the concrete frame 4, and the positions of the two ventilation interfaces 9 overlap along the front direction of the pipe gallery body 1. The two ends of the ventilation pipe 8 are respectively connected and communicated with one of the ventilation interfaces 9 on two adjacent pipe gallery bodies 1. The continuous cavities 2 in each of the double-closed-cavity integral pipe gallery components arranged in a row are respectively connected and communicated in series through the cooperation of the ventilation pipe 8 and each of the ventilation interfaces 9.

[0029] Specifically, by cooperating with the ventilation pipe 8 and the ventilation interface 9, the continuous cavities 2 within the row of pipe gallery components are connected in series to form a through-type ventilation system: fresh outside air can enter from the ventilation interface 9 at one end of the pipe gallery, pass through the channel formed by the continuous cavity 2 and the ventilation pipe 8, run through all the series-connected pipe gallery components, and finally exit from the ventilation interface 9 at the other end, realizing the circulation of air inside the pipe gallery. This ventilation method can effectively reduce the humidity inside the pipe gallery, preventing pipeline corrosion due to moisture; at the same time, it can remove the heat generated by the pipeline operation within the continuous cavity 2, maintain a suitable temperature inside the pipe gallery, and ensure the stable operation of pipelines (especially power cables); in addition, it can dilute and exhaust harmful gases, creating a safe environment for maintenance personnel to enter the pipe gallery for work. Compared with the traditional design of setting up separate ventilation ducts in pipe galleries, this embodiment combines the continuous cavity 2 with the ventilation function, eliminating the need to lay separate ventilation ducts inside the pipe gallery body 1, significantly reducing material usage and engineering costs. Meanwhile, the ventilation interface 9 can be pre-embedded during the prefabrication stage of the pipe gallery components in the factory, and the ventilation pipe 8 can be directly installed after the pipe gallery body 1 is assembled on site. The construction process is simple and convenient, without the need for complicated on-site drilling or pipe laying operations, thus shortening the construction cycle. At the same time, when some ventilation interfaces 9 are not used or not connected to the ventilation pipe 8, the ventilation interface 9 is equipped with a cover plate (not shown). The cover plate and the ventilation interface 9 are detachably connected. The detachable structure can adopt the existing rotating snap-fit ​​structure of a teapot and its lid. A groove is set in the cover plate, and a snap protrusion is set in the ventilation interface 9. When the snap protrusion corresponds to the groove, the two can be detached. When the two are misaligned, they are relatively fixed. If unused ventilation ports 9 are left open, they can create a potential hazard by forming holes in the inner wall of the utility tunnel. Firstly, when personnel enter the tunnel for maintenance, they may inadvertently bump into the open ports, causing injury, or tools or equipment may fall into the continuous cavity 2, damaging the equipment and potentially clogging the cavity, affecting future use. Secondly, if flammable or explosive gases are present inside the utility tunnel (such as in a gas leak), the open ventilation ports 9 could become a channel for gas diffusion, increasing safety risks. Covering the ventilation ports 9 eliminates these hazards: by covering them, personnel and equipment are prevented from contacting the open ports, and airflow between different areas inside the utility tunnel is blocked through the unused ventilation ports 9. If a gas leak occurs in one area, the spread of leaked gas to other areas through the unused ventilation ports 9 can be reduced, minimizing the scope of the safety incident.

[0030] Furthermore, the surface of the tube gallery body 1 is provided with an optical fiber lead hole 10, which extends into the interior of the tube gallery body 1 for installing an optical fiber sensor. Specifically, in terms of location distribution, it is necessary to combine the key stress areas of the utility tunnel body 1 with monitoring needs, and prioritize the placement of fiber optic sensors at locations prone to stress concentration or deformation, such as the sides and corners of the concrete frame 4. For example, lead-in holes can be opened at the midpoints of the four long sides and the four corners of the annular rectangular concrete frame 4 to ensure that the fiber optic sensors can cover all key monitoring points of the utility tunnel body 1. Fiber optic sensors have the advantages of high sensitivity, strong anti-interference ability, and distributed monitoring capabilities, and the fiber optic lead-in holes 10 provide a stable installation channel for them, enabling the construction of a full life-cycle monitoring system covering the structure and operating status of the utility tunnel. In terms of structural safety monitoring, fiber optic strain sensors can be installed near the reinforcing cage 5 through the lead-in holes to monitor the structural stress changes of the utility tunnel under underground soil pressure and settlement in real time. When the stress exceeds the preset threshold, an early warning can be issued in time to prevent structural cracking or collapse. Furthermore, a receiver can be placed outside the fiber optic lead-in holes 10 to wirelessly transmit the data transmitted by the fiber optic sensors to the monitoring center, or a fiber optic cable can be connected to the data acquisition box to transmit the data to the monitoring center.

[0031] Furthermore, the surface of the pipe gallery body 1 is provided with multiple optical fiber lead holes 10, and each optical fiber lead hole 10 extends to different parts inside the pipe gallery body 1. Specifically, the optical fiber lead holes 10 can extend to the following locations: stress-sensitive parts of the reinforcing cage 5, where optical fiber lead holes 10 are respectively provided at the midpoints of the four sides of the annular rectangular reinforcing cage 5, at the corner connections, and near the intersection nodes of the main reinforcing bars of the reinforcing cage 5, extending 2-3 cm to the surface of the reinforcing cage 5, to accommodate the installation of optical fiber strain sensors, focusing on monitoring the area where the stress of the pipe gallery body 1 structure is most concentrated, timely capturing changes in the stress of the main reinforcing bars, and preventing structural cracking; the continuous cavity 2 area, where optical fiber lead holes 10 are provided at intervals along the inner walls of the long and short sides of the continuous cavity 2, extending to the inner wall surface of the continuous cavity 2, for installing optical fiber temperature and humidity sensors and gas monitoring sensors. The system monitors the pipeline operating environment in real time to provide data for ventilation control. In the area surrounding the discontinuous cavity 3, fiber optic lead holes 10 are installed at both ends and the middle of each discontinuous cavity 3, extending to the junction of the discontinuous cavity 3 and the concrete frame 4. Fiber optic vibration sensors are installed to monitor whether the concrete around the discontinuous cavity 3 experiences minor deformation or cracks due to localized loads. In the area near the splicing joints of each pipe gallery component, fiber optic lead holes 10 are installed on the outer side of the splicing surfaces at both ends of the pipe gallery body 1, extending to the interior of the concrete surrounding the splicing joint. Fiber optic displacement sensors are installed to monitor whether gap displacement occurs due to settlement or vibration after the pipe gallery components are spliced, preventing potential water seepage hazards.

[0032] In another embodiment of the invention, the reinforcing cage 5 is provided with a mold for forming the continuous cavity 2 and the discontinuous cavity 3, the mold being made of a water-soluble material. Specifically, the forming molds for the first grouting hole 6, the second grouting hole 7, the ventilation interface 9, and the optical fiber lead hole 10 are all made of a water-soluble material. After the concrete solidifies, the mold can be removed simply by dissolving it with water, without the need for manual entry into the reinforcing cage 5 for disassembly. For molds in enclosed spaces such as the annular continuous cavity 2, there is no need to open a disassembly window, avoiding damage to the structural integrity. The water-soluble mold leaves no residue after dissolution, eliminating the need to clean mold fragments or repair concrete damage caused by disassembly. Furthermore, the smooth inner walls of the ducts and cavities eliminate the need for additional grinding, further reducing construction costs. When the mold is fixed, it is connected to the reinforcing cage 5 only through flexible binding. During the melting process, there will be no pulling or collision with the reinforcing bars, ensuring that the continuous force system of the reinforcing cage 5 along the contour of the concrete frame 4 is not damaged, and maintaining the overall load-bearing capacity of the utility tunnel. There is no need to open mold disassembly holes, and a complete closed structure can be formed during concrete pouring, avoiding local concrete inconsistencies caused by disassembly holes. At the same time, the melting process does not generate vibration, preventing concrete cracks and improving the impermeability and corrosion resistance of the utility tunnel. Furthermore, the water-soluble material can be made into any shape through injection molding, extrusion and other processes to meet complex requirements such as the annular rectangular shape of the continuous cavity 2, the curved path of the fiber optic lead hole 10 and other channels (such as the L-shaped path), without the need to disassemble the mold, ensuring structural integrity.

[0033] Furthermore, the first grouting hole 6 is located at the corner of the inner side of the concrete frame 4. Specifically, in this embodiment, each discontinuous cavity 3 has the same inner side length as its corresponding pipe gallery body 1. To avoid positional interference between the discontinuous cavities 3 and the first grouting hole 6, the first grouting hole 6 can be located at the corner of the inner side of the concrete frame 4. The middle part of the side of the concrete frame 4 is a region with relatively concentrated stress, which needs to withstand lateral earth pressure and vertical load. If the first grouting hole 6 is opened in this region, it will weaken the concrete cross-sectional area in the middle of the side, forming a local weak area, which is prone to stress concentration when the side is under stress, increasing the risk of cracking. By moving the first grouting hole 6 to the corner, the complete concrete structure in the middle of the side can be preserved, ensuring that the side can bear the load evenly and avoiding stress imbalance caused by the opening of the hole. At the same time, the reinforcement structure at the corner can absorb the local cross-sectional weakening caused by the first grouting hole 6, without significantly affecting the overall stress and maintaining the stress balance of the pipe gallery frame. One of the core functions of the discontinuous cavity 3 is to reduce the weight of the pipe gallery body 1 to meet the overall hoisting and transportation requirements. The design, which is consistent with the inner side length of the concrete frame 4, can maximize the use of the side space of the concrete frame 4 to set up the cavity without sacrificing structural strength, thereby reducing the amount of redundant concrete.

[0034] In summary, this invention provides a double-closed-cavity integral pipe gallery component, comprising: a pipe gallery body 1, wherein a continuous cavity 2 extending along the contour of the pipe gallery body 1 is provided within the pipe gallery body 1, and a plurality of discontinuous cavities 3 arranged at intervals along the contour direction of the pipe gallery body 1 are also provided within the pipe gallery body 1. The discontinuous cavities 3 are spaced around the periphery of the continuous cavity 2 and extend along the length direction of the continuous cavity 2. In this invention, by setting the continuous cavity 2 and the discontinuous cavity 3, a double-closed-cavity structure is formed within the pipe gallery body 1, effectively reducing the amount of concrete material used and achieving overall weight reduction of the pipe gallery component. The continuous cavity 2 extends along the contour direction of the pipe gallery body 1 and the discontinuous cavity 3 extends along the length direction of the continuous cavity 2. The scientific arrangement of the double-closed cavities, while reducing weight, enhances the torsional and bending resistance of the pipe gallery body 1 through the cavity structure, ensuring that lightweighting does not sacrifice structural strength and meets the requirements for overall hoisting and transportation. This invention is an integral pipe gallery component that can be prefabricated and transported without disassembly. The design eliminates the assembly joints of multiple small components in traditional pipe gallery components. The integral structure can better transfer loads and avoid the problems of reduced overall structural stability and water seepage caused by weak joints.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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 this invention.

[0036] 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 at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0040] Of course, the above description of the embodiments of the present invention is quite detailed, but it should not be construed as a limitation on the scope of protection of the present invention. The present invention may have many other implementations. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A double-closed-cavity integral pipe gallery component, characterized in that, include: The pipe gallery body has a continuous cavity extending along the outline of the pipe gallery body, and also has a plurality of discontinuous cavities arranged at intervals along the outline of the pipe gallery body. The discontinuous cavities are spaced around the periphery of the continuous cavity and extend along the length direction of the continuous cavity. The utility tunnel body includes a concrete frame and a reinforcing cage. The reinforcing cage is continuously arranged in the concrete frame along the outline of the concrete frame. The continuous cavity and the discontinuous cavity are respectively arranged in the reinforcing cage and distributed along the outline of the concrete frame. Ventilation pipe; two ventilation interfaces communicating with the continuous cavity are provided on the inner side of the concrete frame. The two ends of the ventilation pipe are respectively connected to and communicate with one of the ventilation interfaces on two adjacent pipe gallery bodies. The continuous cavities in each of the double-closed-cavity integral pipe gallery components arranged in a row are connected in series and communicated through the ventilation pipe and each of the ventilation interfaces.

2. The double-closed-cavity integral pipe gallery component according to claim 1, characterized in that, The concrete frame and the reinforcing cage are both annular rectangles. Each of the discontinuous cavities is respectively set to correspond one-to-one with each side of the concrete frame, and the spacing between each pair of adjacent discontinuous cavities is uniform.

3. The double-closed-cavity integral pipe gallery component according to claim 2, characterized in that, The inner side of the concrete frame is provided with a first grouting hole, which is connected to the continuous cavity.

4. The double-closed-cavity integral pipe gallery component according to claim 3, characterized in that, A second grouting hole is also provided on the inner side of the concrete frame, and the second grouting hole is connected to the discontinuous cavity.

5. The double-closed-cavity integral pipe gallery component according to claim 1, characterized in that, The surface of the pipe gallery body is provided with optical fiber lead holes, which extend into the interior of the pipe gallery body for installing optical fiber sensors.

6. The double-closed-cavity integral pipe gallery component according to claim 5, characterized in that, The surface of the pipe gallery body is provided with a plurality of optical fiber lead holes, and each optical fiber lead hole extends to a different part of the pipe gallery body.

7. The double-closed-cavity integral pipe gallery component according to claim 4, characterized in that, The steel cage is equipped with a mold for forming the continuous cavity and the discontinuous cavity, and the mold is made of a water-soluble material.

8. The double-closed-cavity integral pipe gallery component according to claim 3, characterized in that, The first grouting hole is located at the corner of the inner side of the concrete frame.

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