Underground pipe gallery reserved end joint structure

Abstract

The utility model discloses an underground pipe gallery reserved end joint structure, and relates to the technical field of comprehensive pipe galleries, the underground pipe gallery reserved end joint structure comprises a pipe gallery body, and the inner edge of a wall plate at the end of the pipe gallery body is coated with corner protection angle steel; the blocking steel plate is connected with the corner protection angle steel and used for blocking the end of the pipe gallery body; the plain concrete wall is connected to the outer side of the plugging steel plate; the water stop belt is provided with a bent part and connecting parts symmetrically connected to the two sides of the bent part, one of the connecting parts is embedded in a wall plate of the pipe gallery body, the other connecting part is embedded in the plain concrete wall, and a release agent layer is arranged between the connecting parts and the plain concrete wall; the edge protecting angle steel and the blocking steel plate are both located in the water stop belt. According to the underground pipe gallery reserved end joint structure, the water stop belt can be completely stored in the dismantling process, the plugging steel plate can be recycled after being dismantled, and the underground pipe gallery reserved end joint structure has the advantages of being low in construction cost and easy and convenient to dismantle.

Description

Technical Field

[0001] This utility model relates to the field of integrated utility tunnel technology, and in particular to a reserved end node structure for underground utility tunnels. Background Technology

[0002] Underground utility tunnel projects refer to the construction of a shared municipal tunnel beneath urban roads to centrally house various municipal pipelines such as electricity, communications, water supply, and gas, implementing "unified planning, unified construction, and unified management" to achieve comprehensive utilization of underground space and resource sharing. Underground utility tunnel projects not only eliminate urban "zipper roads" and ensure smooth urban traffic flow, but also guarantee the safe operation of underground pipelines and conserve urban land resources. The length of cast-in-place concrete underground utility tunnels can range from tens of meters to hundreds of kilometers. Due to long construction periods or planning requirements, expansion joints in concrete utility tunnels may require temporary sealing, necessitating proper treatment of the ends of existing cast-in-place concrete utility tunnels and reserved concrete utility tunnels.

[0003] Traditional underground utility tunnel pre-reserved end node technology involves extending the tunnel along its length at the expansion joint, creating an extra section. During the extension construction, this extra section is removed before the next section is poured. This pre-reserved end node technology is costly to construct and difficult to dismantle. Utility Model Content

[0004] The purpose of this utility model is to provide a structure for the reserved end node of underground utility tunnels, which solves the problems of high construction cost and troublesome demolition of traditional reserved end node technology for underground utility tunnels.

[0005] The above-mentioned objectives of this utility model can be achieved by the following technical solutions:

[0006] This utility model provides a pre-reserved end node structure for an underground utility tunnel, comprising: a utility tunnel body, wherein the inner edge of the wall panel at its end is covered with a protective angle steel; a sealing steel plate, fixedly connected to the protective angle steel, for sealing the end of the utility tunnel body; a plain concrete wall connected to the outside of the sealing steel plate; and a waterstop strip having a bent portion and connecting portions symmetrically connected to both sides of the bent portion, one of the connecting portions being embedded in the wall panel of the utility tunnel body, and the other of the connecting portions being embedded in the plain concrete wall, with a release agent layer provided between the connecting portion and the plain concrete wall; the protective angle steel and the sealing steel plate are both located within the waterstop strip.

[0007] Preferably, the sealing steel plate and the edge protection angle steel are connected and fixed by welding.

[0008] Preferably, the connection portion pre-embedded in the pipe gallery body is located at the center of the wall thickness of the wall panel of the pipe gallery body.

[0009] Preferably, the thickness of the plain concrete wall is 250mm to 300mm.

[0010] Preferably, the edge protection angle steel is connected to multiple reinforcing bars that extend into the wall panel of the pipe gallery body, and the multiple reinforcing bars are evenly distributed at intervals along the length direction of the edge protection angle steel.

[0011] Preferably, the rebar includes: an angled connecting section that mates with the inner surface of the edge angle steel; an implanted section that is parallel to both ends of the angled connecting section, the implanted section having an obtuse angle with the connecting section; and a hook section connected to the end of the implanted section.

[0012] Preferably, the length of the implanted segment is not less than 160 mm.

[0013] Preferably, the thickness of the sealing steel plate is not less than 10 mm.

[0014] Preferably, the end of the sealing steel plate facing the pipe gallery body is provided with a stiffening structure.

[0015] Preferably, the stiffening structure includes multiple first stiffening plates arranged in parallel and spaced apart, and multiple second stiffening plates arranged in parallel and spaced apart, wherein the multiple first stiffening plates and multiple second stiffening plates are arranged perpendicularly.

[0016] The features and advantages of this utility model are as follows: The underground utility tunnel reserved end node structure provided in this application achieves temporary and effective sealing of the reserved end of the utility tunnel by setting up protective angle steel and sealing steel plate, and protects the waterstop and sealing steel plate by setting up plain concrete wall, which at the same time strengthens the sealing effect. Moreover, the plain concrete wall and sealing steel plate are easy to remove. The waterstop can be completely preserved during the removal process, and the waterproof effect of the waterstop will not be affected. Furthermore, the sealing steel plate can be recycled after removal, which has the advantages of low construction cost and easy removal. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of the reserved end node structure of the underground utility tunnel provided in the embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the connection between the rebar and the sealing steel plate provided in the embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the connection of the sealing steel plate provided in the embodiment of this utility model.

[0021] Explanation of icon numbers:

[0022] 1. The utility tunnel itself;

[0023] 2. Seal with steel plates;

[0024] 3. Plain concrete wall;

[0025] 4. Waterstop strip;

[0026] 5. Edge protection angle steel;

[0027] 6. Rebar installation; 61. Angular connection segment; 62. Implanted segment; 63. Hooked segment;

[0028] 7. Stiffening structure; 71. First stiffening plate; 72. Second stiffening plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figure 1 As shown, this utility model provides a pre-reserved end node structure for an underground utility tunnel, including a utility tunnel body 1, a sealing steel plate 2, a plain concrete wall 3, and a waterstop 4. The inner edge of the wall panel at the end of the utility tunnel body 1 is covered with a protective angle steel 5. The sealing steel plate 2 is fixedly connected to the protective angle steel 5 to seal the end of the utility tunnel body 1. The plain concrete wall 3 is connected to the outside of the sealing steel plate 2. The waterstop 4 has a bent portion and connecting portions symmetrically connected to both sides of the bent portion. One of the connecting portions is embedded in the wall panel of the utility tunnel body 1, and the other is embedded in the plain concrete wall 3. A release agent layer is provided between the connecting portion and the plain concrete wall 3. The protective angle steel 5 and the sealing steel plate 2 are both located within the waterstop 4. The plain concrete wall 3 is formed by casting C20 plain concrete.

[0031] Specifically, the utility tunnel body 1 is a cast-in-place integrated utility tunnel. During the casting of its ends, a waterstop 4 and edge-protecting angle steel 5 are pre-embedded. Then, the sealing steel plate 2 is welded and fixed to the edge-protecting angle steel 5. A release agent is brushed onto the exposed surface of the waterstop 4 to form a release agent layer. Finally, plain concrete is used to encase the exposed part of the waterstop 4 on the outside of the steel plate to form a plain concrete wall 3. At this point, the construction of the reserved end node structure of the underground utility tunnel is completed. When demolition is required, the plain concrete wall 3 is first chiseled away, and then the sealing steel plate 2 is removed from inside the utility tunnel. The utility tunnel can then be continued. In this embodiment, the waterstop 4 is preferably made of stainless steel to ensure its service life.

[0032] The underground utility tunnel reserved end node structure provided in this application achieves temporary and effective sealing of the reserved end of the utility tunnel by setting up protective angle steel 5 and sealing steel plate 2. The plain concrete wall 3 is set up to protect the waterstop 4 and the sealing steel plate 2, and at the same time strengthens the sealing effect. The plain concrete wall 3 and the sealing steel plate 2 are easy to remove. The waterstop 4 can be completely preserved during the removal process, and the waterproof effect of the waterstop 4 will not be affected. The sealing steel plate 2 can be recycled after removal. It has the advantages of low construction cost and simple removal.

[0033] According to a preferred embodiment of this utility model, the sealing steel plate 2 and the edge-protecting angle steel 5 are connected and fixed by welding. Specifically, as shown... Figure 1 As shown, along the wall thickness direction of the pipe gallery body 1, the angle steel edge of the edge guard 5 extends a certain length beyond the end of the sealing steel plate 2 to facilitate the welding and fixing of the sealing steel plate 2 and the edge guard 5.

[0034] According to a preferred embodiment of the present invention, the connecting portion embedded in the pipe gallery body 1 is located at the center of the wall thickness of the wall panel of the pipe gallery body 1. This achieves better connection stability.

[0035] According to a preferred embodiment of the present invention, in order to balance good demolition performance and sealing and protection effect, the thickness of the plain concrete wall 3 is 250mm to 300mm.

[0036] According to a preferred embodiment of this utility model, multiple reinforcing bars 6 extending into the wall panel of the pipe gallery body 1 are connected to the edge angle steel 5. The multiple reinforcing bars 6 are evenly distributed at intervals along the length direction of the edge angle steel 5. By setting multiple reinforcing bars 6 for anchoring, the connection strength between the edge angle steel 5 and the pipe gallery body 1 is strengthened.

[0037] According to a preferred embodiment of the present invention, see also [reference needed]. Figure 2As shown, the rebar 6 includes: an angled connecting section 61 that mates with the inner surface of the edge angle steel 5; an implantation section 62 parallel to both ends of the angled connecting section 61, with an obtuse angle between the implantation section 62 and the connecting section; and a hook section 63 connected to the end of the implantation section 62. By setting the angled connecting section 61, the connection area between the rebar 6 and the sealing steel plate 2 is increased, strengthening the connection between them; by setting the implantation section 62 with an obtuse angle between it and the connecting section, the contact area between the rebar 6 and the wall panel of the pipe gallery body 1 is ensured, thereby ensuring the connection stability between the sealing steel plate 2 and the pipe gallery body 1; by setting the hook section 63 at the end of the implantation section 62, the mechanical interlocking and anchoring effect between the rebar 6 and the wall panel of the pipe gallery body 1 is increased, improving the anchoring performance of the rebar 6, ensuring that the rebar 6 can effectively transmit tensile and shear forces, and effectively preventing the component consisting of the edge angle steel 5 and the rebar 6 from coming out of the wall panel of the pipe gallery body 1. In order to achieve better anchorage performance for rebar 6, such as... Figure 2 As shown, the hook section 63 includes a transition section perpendicularly connected to the implanted section 62 and an extension section perpendicularly connected to the transition section and extending in the direction of the angled connection section 61. In this embodiment, the diameter of the rebar 6 is not less than 8mm, the spacing between two adjacent rebars 6 is 200mm, and the hook directions of the two hook sections 63 connected to the two implanted sections 62 are arranged opposite to each other to achieve better tensile and shear force transmission effect for the rebar 6. Preferably, the rebar 6 is formed by bending steel bars to simplify the process and ensure the strength of the rebar 6.

[0038] According to a preferred embodiment of the present invention, the length of the implanted segment 62 is not less than 160mm to obtain a better anchoring effect.

[0039] According to a preferred embodiment of the present invention, the thickness of the sealing steel plate 2 is not less than 10mm to ensure the strength of the sealing steel plate 2.

[0040] According to a preferred embodiment of the present invention, a stiffening structure 7 is provided on the end of the sealing steel plate 2 facing the pipe gallery body 1. By providing the stiffening structure 7, the strength of the sealing steel plate 2 is improved while saving costs, and welding deformation and extrusion deformation are effectively prevented.

[0041] According to a preferred embodiment of this utility model, the stiffening structure 7 includes multiple parallel and spaced first stiffening plates 71 and multiple parallel and spaced second stiffening plates 72, with the multiple first stiffening plates 71 and multiple second stiffening plates 72 arranged perpendicularly. This facilitates the construction of the stiffening structure 7. For details, please refer to the relevant documentation. Figure 3As shown, the stiffening structure 7 is generally grid-like, consisting of multiple first stiffening plates 71 spaced apart along the width direction of the pipe gallery body 1 and multiple second stiffening plates 72 spaced apart along the height direction of the pipe gallery body 1, which are vertically intersected and connected. Preferably, in order to achieve better strength enhancement and welding deformation prevention effect for the sealing steel plate 2, the first stiffening plates 71 are located below the second stiffening plates 72. The distance between the first stiffening plates 71 near the end of the sealing steel plate 2 and the end of the sealing steel plate 2 is the same as the distance between the second stiffening plates 72 near the end of the sealing steel plate 2, and the number of first stiffening plates 71 is less than the number of second stiffening plates 72.

[0042] Based on the above description, the underground utility tunnel reserved end node structure provided in this application embodiment has the following beneficial effects:

[0043] The underground utility tunnel reserved end node structure provided in this application embodiment achieves temporary and effective sealing of the reserved end of the utility tunnel by setting up protective angle steel 5 and sealing steel plate 2. The plain concrete wall 3 is set up to protect the waterstop 4 and the sealing steel plate 2, and at the same time strengthens the sealing effect. The plain concrete wall 3 and the sealing steel plate 2 are easy to remove. During the removal process, the waterstop 4 can be completely preserved and will not affect the waterproof effect of the waterstop 4 in the later stage. The sealing steel plate 2 can be recycled after removal, which has the advantages of low construction cost and simple removal. Multiple reinforcing bars 6 are set on the protective angle steel 5 for anchoring to strengthen the connection strength between the protective angle steel 5 and the utility tunnel body 1. Furthermore, a stiffening structure 7 is set on the end of the sealing steel plate 2 facing the utility tunnel body 1 to improve the strength of the sealing steel plate 2 while saving costs and effectively preventing welding deformation and extrusion deformation.

[0044] The above descriptions are merely a few embodiments of this utility model. Those skilled in the art can make various modifications or variations to the embodiments of this utility model based on the content disclosed in the application documents without departing from the spirit and scope of this utility model.

Claims

1. A pre-reserved end node structure for an underground utility tunnel, characterized in that, include: The inner edges of the end wall panels of the pipe gallery body are covered with protective angle steel. A sealing steel plate, connected to the edge protection angle steel, is used to seal the end of the pipe gallery body; Plain concrete wall, connected to the outside of the sealing steel plate; The waterstop has a bent portion and connecting portions symmetrically connected to both sides of the bent portion. One of the connecting portions is embedded in the wall panel of the pipe gallery body, and the other of the connecting portions is embedded in the plain concrete wall. A release agent layer is provided between the connecting portion and the plain concrete wall. The edge protection angle steel and the sealing steel plate are both located within the waterstop.

2. The underground utility tunnel reserved end node structure according to claim 1, characterized in that, Multiple reinforcing bars are connected to the edge angle steel and extend into the wall panel of the pipe gallery body. The multiple reinforcing bars are evenly distributed at intervals along the length of the edge angle steel.

3. The underground utility tunnel reserved end node structure according to claim 2, characterized in that, The rebar includes: an angled connecting section that mates with the inner surface of the edge angle steel; an implanted section that is parallel to both ends of the angled connecting section, the implanted section and the connecting section having an obtuse angle; and a hook section connected to the end of the implanted section.

4. The underground utility tunnel reserved end node structure according to claim 3, characterized in that, The length of the implanted segment is not less than 160 mm.

5. The underground utility tunnel reserved end node structure according to claim 1, characterized in that, The sealing steel plate and the edge protection angle steel are connected and fixed by welding.

6. The underground utility tunnel reserved end node structure according to claim 1, characterized in that, The thickness of the plain concrete wall is 250mm to 300mm.

7. The underground utility tunnel reserved end node structure according to claim 1, characterized in that, The connection portion, which is embedded in the main body of the pipe gallery, is located at the center of the wall thickness of the wall panel of the main body of the pipe gallery.

8. The underground utility tunnel reserved end node structure according to claim 1, characterized in that, The end of the sealing steel plate facing the pipe gallery body is provided with a stiffening structure.

9. The underground utility tunnel reserved end node structure according to claim 8, characterized in that, The stiffening structure includes multiple first stiffening plates and multiple second stiffening plates arranged in parallel at intervals, with the multiple first stiffening plates and multiple second stiffening plates arranged in parallel at intervals, and the multiple first stiffening plates and multiple second stiffening plates arranged perpendicularly.

10. The underground utility tunnel reserved end node structure according to claim 1, characterized in that, The thickness of the sealing steel plate shall not be less than 10 mm.

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