Fabricated pipe gallery

Abstract

The utility model discloses an assembly type pipe gallery which comprises a prefabricated upper section, a prefabricated lower section and a bolt I. The prefabricated upper section and the prefabricated lower section are connected through the bolt I in the longitudinal direction. The number of the bolts I is multiple, the multiple bolts I are arranged at intervals in the transverse direction to form a longitudinal bolt group, and the prefabricated upper section and the prefabricated lower section are assembled through the longitudinal bolt group to form a circumferentially-closed pipe gallery section; according to the method, the reliability of current assembly type pipe gallery joints and the reliability of segment pipe gallery connection can be optimized, the assembly difficulty of pipe gallery segments is reduced, the construction period is compressed again, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of utility tunnel structures, and particularly to an assembled utility tunnel. Background Art

[0002] With the continuous development and improvement of urban construction in China, building a sustainable underground utility tunnel has increasingly become an important means to improve the utilization and management efficiency of urban underground space, maintain the durability of various pipelines, beautify the urban landscape, and enhance the comprehensive carrying capacity of the city.

[0003] The utility tunnel can be divided into cast-in-situ type and assembled type in terms of construction methods. The cast-in-situ type is a traditional construction method, where formwork is supported, steel bars are tied, and concrete is poured on-site. Its structure has good integrity, large stiffness, and small deformation, but it requires a large amount of earth excavation, a lot of manpower and material resources, a long construction time, and serious environmental pollution.

[0004] The components of the assembled utility tunnel are prefabricated in the factory and can be installed on-site after being transported. Compared with the cast-in-situ utility tunnel, the assembled utility tunnel has outstanding advantages such as fast construction speed, high finished product quality, less environmental pollution, and less influence of construction by weather.

[0005] The key points and difficulties of the structure of the assembled utility tunnel lie in how to ensure the reliability and safety of the joints between precast segments. Firstly, the reliability of the connection has a great impact on the reliability of the utility tunnel structure. Secondly, the connection method also has a great impact on the construction convenience.

[0006] Therefore, to solve the above problems, an assembled utility tunnel is needed, which can optimize the reliability of the joints of the current assembled utility tunnel and the reliability of the connection of the segmental utility tunnel, reduce the assembly difficulty of the utility tunnel segments, further compress the construction period, and improve the construction efficiency. Summary of the Utility Model

[0007] In view of this, the purpose of the utility model is to overcome the defects in the prior art and provide an assembled utility tunnel, which can optimize the reliability of the joints of the current assembled utility tunnel and the reliability of the connection of the segmental utility tunnel, reduce the assembly difficulty of the utility tunnel segments, further compress the construction period, and improve the construction efficiency.

[0008] The prefabricated pipe gallery of the utility model includes a prefabricated upper section, a prefabricated lower section, and bolt I. Bolt I longitudinally connects the prefabricated upper section and the prefabricated lower section. That is to say, this solution forms a continuous pipe gallery in the assembly mode of split pipe gallery sections. By arranging bolt I longitudinally, the upper and lower prefabricated upper and lower sections are assembled longitudinally to form an integral pipe gallery section. The structure of the pipe gallery section split into two parts can further reduce the volume of a single prefabricated component, which is beneficial for transportation and on-site construction. Especially, the construction difficulty of pipe galleries in narrow and cramped areas is greatly reduced. There are several bolt Is, and several bolt Is are arranged at intervals transversely to form a group of longitudinal bolt groups. The prefabricated upper section and the prefabricated lower section are assembled through the longitudinal bolt group to form a circumferentially closed pipe gallery section. Through the connection of the longitudinal bolt group, the butting joints of the prefabricated upper section and the prefabricated lower section are fastened and sealed, and the connection method using bolt I is more conducive to construction. The assembly efficiency of the pipe gallery section is relatively high, and the reliability and safety of the pipe gallery section can be guaranteed.

[0009] Furthermore, there are several pipe gallery sections, and it also includes bolt II. Bolt II transversely connects two adjacent pipe gallery sections. There are several bolt IIs, and several bolt IIs are arranged at intervals longitudinally to form a group of transverse bolt groups. Two adjacent pipe gallery sections in the transverse direction are assembled through the transverse bolt group to form a pipe gallery with continuous length. Through the connection of the transverse bolt group, the butting joints of adjacent pipe gallery sections are fastened and sealed, and the connection method using bolt II is more conducive to construction. The assembly efficiency of the pipe gallery is relatively high, and the reliability and safety of the pipe gallery can be guaranteed.

[0010] Furthermore, there are several groups of the transverse bolt groups, and several groups of the transverse bolt groups are arranged at intervals in the thickness direction of the pipe gallery section. This enables bolt II to be arranged circumferentially on the pipe gallery section to meet the stable and reliable connection of adjacent pipe gallery sections.

[0011] Furthermore, bolt I is parallel to the longitudinal direction, and bolt II is parallel to the transverse direction. The perpendicularity between the two makes the torques not interact with each other, which can improve the structural strength of the pipe gallery section and the pipe gallery and reduce the structural instability caused by the internal stress of the connection. Among them, bolt II is parallel to the transverse direction so that bolt II can also play the role of tensioning adjacent pipe gallery sections.

[0012] Furthermore, the precast upper segment is in an "n" shape with an open end facing downwards, and the precast lower segment is in a "u" shape with an open end facing upwards, so that the precast upper segment and the precast lower segment are assembled in a matching manner to form a circumferentially closed pipe gallery segment; as shown in the figure, the main structures of the precast upper segment and the precast lower segment are substantially the same, and the two are longitudinally matched and assembled through a longitudinal bolt group to form a circumferentially closed pipe gallery segment; more specifically, there are two groups of the longitudinal bolt groups, and the two groups of longitudinal bolt groups are respectively arranged at the connection of the pins of the "n"-shaped precast upper segment and the pins of the "u"-shaped precast lower segment; this structure can greatly improve the structural reliability of the interface between the precast upper segment and the precast lower segment, making the continuous surface of the interface between the two more fitting and the firmness better.

[0013] Furthermore, the precast upper segment and the precast lower segment are connected in a socket and spigot form. The bottom of the precast upper segment protrudes to form a spigot, and the top of the precast lower segment is recessed to form a socket. The structure of the socket and spigot can greatly prevent water seepage from the outside to the inside of the pipe gallery, and the reliability of the pipe gallery structure is improved.

[0014] Furthermore, the socket and the spigot have a mating surface in the longitudinal direction, and the mating surface slopes obliquely outwards from top to bottom. It can further play a role in preventing water seepage, and the slope of the mating surface can also be more conducive to the rapid docking and assembly of the precast upper segment and the precast lower segment, improving the construction efficiency.

[0015] Furthermore, the longitudinal bolt group is arranged inside the pipe gallery segment. The risk of water seepage at the assembly node is reduced, and at the same time, the outer surface of the pipe gallery is flatter, which is beneficial to later construction and protection.

[0016] Furthermore, the transverse bolt group is arranged at the transverse end of the pipe gallery segment. The connection reliability of bolt II is better, and the structural strength can be guaranteed.

[0017] Furthermore, precast connection positions for bolt I and bolt II to pass through are reserved on the precast upper segment, and precast connection positions for bolt I and bolt II to pass through are reserved on the precast lower segment. In this solution, the root of bolt I is precast inside the side wall of the precast lower segment, and a through hole for bolt I to pass through and a groove for nut locking are reserved on the precast upper segment. During assembly, after directly docking the precast upper segment and the precast lower segment, the nut can be used for locking, improving the construction efficiency; a through hole for bolt II to pass through and a groove for nut locking are directly reserved. In this solution, bolt II is also evenly distributed around the pipe gallery segment, further improving the assembly reliability and assembly convenience of adjacent pipe gallery segments.

[0018] Further, waterproof measures of the prior art are respectively adopted for the interfaces between the precast upper segments and the precast lower segments, the docking surfaces of adjacent utility tunnel segments, the connection positions of bolts I, and the connection positions of bolts II, so as to further reduce the risk of water seepage inside the utility tunnel.

[0019] The beneficial effects of the present utility model are as follows: An assembled utility tunnel disclosed by the present utility model improves the reliability and construction convenience of the overall structure of the assembled comprehensive utility tunnel by optimizing the horizontal and vertical jointing methods; it is conducive to transportation and on-site construction, especially greatly reducing the construction difficulty of utility tunnels in narrow and cramped areas; the assembly efficiency of the utility tunnel is relatively high, and the reliability and safety of the utility tunnel can be guaranteed. Description of the Drawings

[0020] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the precast upper segment of the present utility model;

[0023] Figure 3 is a structural schematic diagram of the precast lower segment of the present utility model;

[0024] Figure 4 is a side view structural schematic diagram of the precast lower segment of the present utility model. Detailed Embodiment

[0025] Figure 1 is a structural schematic diagram of the present utility model. As shown in the figure, in this solution, the horizontal direction is the extending direction of the utility tunnel segment, and the front and back take Figure 1 as an example. The front side in the horizontal direction is the front, and the opposite side is the back; the vertical direction is the height direction of the utility tunnel segment, and the up and down take Figure 1 as an example. The top surface in the vertical direction is the up, and the opposite side is the down; the thickness direction is the direction perpendicular to both the horizontal and vertical directions, and the left and right take Figure 1Taking the left and right in the front-back direction as an example, the "inner" herein refers to the direction close to the central axis of the pipe gallery segment in the circumferential direction of the pipe gallery segment, and the "outer" is opposite to the inner direction, which will not be elaborated here. The prefabricated pipe gallery in this embodiment includes a prefabricated upper segment 1, a prefabricated lower segment 2, and bolts I 3. The bolts I 3 connect the prefabricated upper segment 1 and the prefabricated lower segment 2 longitudinally; that is, this solution forms a continuous pipe gallery in the assembly manner of split pipe gallery segments. By the bolts I 3 arranged longitudinally, the upper and lower two prefabricated upper segments 1 and prefabricated lower segments 2 are assembled longitudinally to form an integral pipe gallery segment. Its structure of splitting into two parts of the pipe gallery segment can further reduce the volume of a single prefabricated component, which is beneficial for transportation and on-site construction. Especially, the construction difficulty of the pipe gallery in a narrow and small area is greatly reduced. The bolts I 3 are several in number, and several bolts I 3 are arranged at intervals transversely to form a group of longitudinal bolt groups. The prefabricated upper segment 1 and the prefabricated lower segment 2 are assembled through the longitudinal bolt groups to form a circumferentially closed pipe gallery segment. Through the connection of the longitudinal bolt groups, the butting joints of the prefabricated upper segment 1 and the prefabricated lower segment 2 are tightly sealed, and the connection method using the bolts I 3 is more conducive to construction. The assembly efficiency of the pipe gallery segment is relatively high, and the reliability and safety of the pipe gallery segment can be guaranteed.

[0026] In this embodiment, there are several pipe gallery segments, and it further includes bolts II. The bolts II connect two adjacent pipe gallery segments transversely. The bolts II are several in number, and several bolts II are arranged at intervals longitudinally to form a group of transverse bolt groups. Two adjacent pipe gallery segments in the transverse direction are assembled through the transverse bolt groups to form a pipe gallery with continuous length. Through the connection of the transverse bolt groups, the butting joints of the adjacent pipe gallery segments are tightly sealed, and the connection method using the bolts II is more conducive to construction. The assembly efficiency of the pipe gallery is relatively high, and the reliability and safety of the pipe gallery can be guaranteed.

[0027] In this embodiment, there are several groups of the transverse bolt groups, and several groups of the transverse bolt groups are arranged at intervals in the thickness direction of the pipe gallery segment. This enables the bolts II to be arranged in the circumferential direction of the pipe gallery segment to meet the stable and reliable connection of adjacent pipe gallery segments.

[0028] In this embodiment, the bolts I 3 are parallel to the longitudinal direction, and the bolts II are parallel to the transverse direction. The perpendicularity between the two makes the torques not interact with each other, which can improve the structural strength of the pipe gallery segment and the pipe gallery, and reduce the structural instability caused by the connection internal stress. Among them, the bolts II are parallel to the transverse direction so that the bolts II can also play the role of tensioning adjacent pipe gallery segments.

[0029] In this embodiment, the prefabricated upper segment 1 is in an "n" shape with an open end facing downwards, and the prefabricated lower segment 2 is in a "u" shape with an open end facing upwards, so that the prefabricated upper segment 1 and the prefabricated lower segment 2 are assembled in a matching manner to form a circumferentially closed pipe gallery segment; as shown in the figure, the main structures of the prefabricated upper segment 1 and the prefabricated lower segment 2 are substantially the same, and the two are longitudinally matched and assembled through a longitudinal bolt group to form a circumferentially closed pipe gallery segment; more specifically, the longitudinal bolt group has two sets, and the two sets of longitudinal bolt groups are respectively arranged at the connection of the pins of the "n"-shaped prefabricated upper segment 1 and the pins of the "u"-shaped prefabricated lower segment 2; this structure can greatly improve the structural reliability of the interface position between the prefabricated upper segment 1 and the prefabricated lower segment 2, making the continuous surface of the interface between the two more fitting and the firmness better.

[0030] In this embodiment, the prefabricated upper segment 1 and the prefabricated lower segment 2 are connected in a socket and spigot form. The bottom of the prefabricated upper segment 1 protrudes to form a spigot, and the top of the prefabricated lower segment 2 is recessed to form a socket. The structure of the socket and spigot can greatly prevent water seepage from the outside to the inside of the pipe gallery, and the reliability of the pipe gallery structure is improved.

[0031] In this embodiment, the socket and the spigot have a mating surface in the longitudinal direction, and the mating surface is inclined obliquely outwards from top to bottom. It can further play a role in preventing water seepage, and the slope of the mating surface can also be more conducive to the rapid docking and assembly of the prefabricated upper segment 1 and the prefabricated lower segment 2, improving the construction efficiency.

[0032] In this embodiment, the longitudinal bolt group is arranged inside the pipe gallery segment. The risk of water seepage at the assembly node is reduced, and at the same time, the outer surface of the pipe gallery is flatter, which is beneficial to later construction and protection.

[0033] In this embodiment, the transverse bolt group is arranged at the transverse end of the pipe gallery segment. The connection reliability of bolt II is better, and the structural strength can be guaranteed.

[0034] In this embodiment, upper segment prefabricated connection positions for bolts I 3 and bolt II to pass through are reserved on the prefabricated upper segment 1, and lower segment prefabricated connection positions for bolts I 3 and bolt II to pass through are reserved on the prefabricated lower segment 2. In this solution, the root of bolt I 3 is prefabricated inside the side wall of the prefabricated lower segment 2, and the prefabricated upper segment 1 reserves a through hole for bolt I 3 to pass through and a groove for nut locking. During assembly, after directly docking the prefabricated upper segment 1 and the prefabricated lower segment 2, it can be locked with a nut, improving the construction efficiency; the through hole for bolt II to pass through is directly reserved and a groove for nut locking is reserved. In this solution, bolt II is also evenly distributed around the pipe gallery segment, further improving the assembly reliability and assembly convenience of adjacent pipe gallery segments. The structure of bolt II is not shown in the figure, but it should be understood that bolt II connects adjacent pipe gallery segments at the four corner positions of the pipe gallery segment to form a continuous pipe gallery, which will not be elaborated here.

[0035] In this embodiment, the front end of the pipe gallery segment is recessed backward, and the rear end of the pipe gallery segment protrudes backward, so that the interfaces of two adjacent pipe gallery segments are also connected in the form of socket and spigot, improving the assembly reliability and structural safety.

[0036] In this embodiment, waterproof measures of the prior art are respectively adopted for the interfaces of the precast upper segment 1 and the precast lower segment 2, the docking surfaces of adjacent pipe gallery segments, the connection positions of the bolts I 3 and the connection positions of the bolts II, so as to further reduce the risk of water seepage inside the pipe gallery.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An assembled pipe gallery, characterized in that: It includes a precast upper segment, a precast lower segment and bolt Ⅰ, and bolt Ⅰ longitudinally connects the precast upper segment and the precast lower segment; There are several bolt Ⅰ, and several bolt Ⅰ are arranged at intervals transversely to form a group of longitudinal bolt groups. The precast upper segment and the precast lower segment are assembled through the longitudinal bolt groups to form a circumferentially closed pipe gallery segment.

2. The prefabricated pipe gallery according to claim 1, wherein: There are several pipe gallery segments, and it also includes bolt Ⅱ. Bolt Ⅱ transversely connects two adjacent pipe gallery segments; There are several bolt Ⅱ, and several bolt Ⅱ are arranged at intervals longitudinally to form a group of transverse bolt groups. Two adjacent pipe gallery segments in the transverse direction are assembled through the transverse bolt groups to form a continuously long pipe gallery.

3. The prefabricated pipe gallery according to claim 2, characterized in that: There are several groups of the transverse bolt groups, and several groups of the transverse bolt groups are arranged at intervals in the thickness direction of the pipe gallery segment.

4. The prefabricated pipe gallery according to claim 2, wherein: Bolt Ⅰ is parallel to the longitudinal direction, and bolt Ⅱ is parallel to the transverse direction.

5. The prefabricated pipe gallery according to claim 2, characterized in that: The precast upper segment is in an "n" shape with an open end downward, and the precast lower segment is in a "u" shape with an open end upward, so that the precast upper segment and the precast lower segment are assembled in a matching manner to form a circumferentially closed pipe gallery segment; There are two groups of the longitudinal bolt groups, and the two groups of the longitudinal bolt groups are respectively arranged at the connection of the pins of the "n"-shaped precast upper segment and the pins of the "u"-shaped precast lower segment.

6. The prefabricated pipe gallery according to claim 5, characterized in that: The precast upper segment and the precast lower segment are connected in a socket and spigot form. The bottom of the precast upper segment protrudes to form a spigot, and the top of the precast lower segment is recessed to form a socket.

7. The prefabricated pipe gallery according to claim 5, wherein: The longitudinal bolt groups are arranged inside the pipe gallery segment.

8. The prefabricated pipe gallery according to claim 5, wherein: The transverse bolt groups are arranged at the transverse ends of the pipe gallery segment.

9. The prefabricated pipe gallery according to claim 2, wherein: Precast connection positions for bolt Ⅰ and bolt Ⅱ to pass through are reserved on the precast upper segment, and precast connection positions for bolt Ⅰ and bolt Ⅱ to pass through are reserved on the precast lower segment.

10. The prefabricated pipe gallery according to claim 6, wherein: The socket and the spigot have a mating surface in the longitudinal direction, and the mating surface slopes obliquely outward from top to bottom.

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