Abutment structure at the junction of a bridge and a tunnel and construction method thereof

Abstract

The present invention discloses an abutment structure at the junction of a bridge and a tunnel and a construction method thereof, the structure comprising: an abutment support body for supporting the bridge; a pipeline warehouse, one side of which is connected to the abutment support body and the other side of which is connected to the tunnel, wherein the pipeline warehouse comprises a front wall with an opening, and the opening is used to pass the pipeline in the tunnel. The present invention can solve the problem that the pipeline at the junction of the bridge and the tunnel is not suitable for inspection and replacement and occupies a large area, and achieves the technical effect that the pipeline at the junction of the bridge and the tunnel can be inspected, repaired and replaced.

Description

Technical Field

[0001] The invention relates to the field of bridge-tunnel engineering, and in particular to an abutment structure at the junction of a bridge and a tunnel and a construction method thereof. Background Art

[0002] The construction of bridge-tunnel junctions plays an important role in transportation infrastructure, especially in mountainous and hilly areas. The design and construction of bridge-tunnel junctions have a significant impact on road safety, durability, and operation and maintenance. However, due to the complex geological environment, limited space, and difficulty in pipeline layout, bridge-tunnel junctions often become the focus and difficulty in engineering construction.

[0003] The inspection well of the existing central drainage ditch at the junction of the bridge and tunnel is set on the middle side of the road at the tunnel exit. The fire-fighting pipe needs to be cross-connected at the tunnel entrance. Later inspection and replacement require the road surface to be cut off after traffic is cut off, which requires a lot of work and engineering costs. The inspection well set up at the tunnel exit of the cable trench generally leaks on both sides of the entrance, occupies a large area and has poor landscape effect. In summary, the existing technology has problems such as unsystematic comprehensive pipeline design, unreasonable reserved pre-embedding, insufficient construction space, and difficulty in later maintenance and replacement.

[0004] Therefore, there is a need for an abutment structure at the junction of a bridge and a tunnel that can improve the convenience of pipeline maintenance and replacement, which can effectively solve the problem of pipeline layout and maintenance and reduce the expansion of the foundation volume. Summary of the invention

[0005] The present invention aims to provide an abutment structure at the junction of a bridge and a tunnel which can adapt to changes in foundation settlement and improve the convenience of pipeline maintenance.

[0006] According to one aspect of the present invention, there is provided an abutment structure at the junction of a bridge and a tunnel, comprising: an abutment support body 8 for supporting the bridge; a pipeline bin connected to the abutment support body 8 on one side and to the tunnel on the other side, wherein the pipeline bin comprises a front wall 2 having an opening for passing pipelines in the tunnel.

[0007] Preferably, the pipeline bin also includes: a top plate 1, two side walls 4 and a back wall 6; the abutment structure also includes an enlarged foundation 10, which is located on the lower side of the pipeline bin and the abutment support body 8, and a notch 11 is provided on the enlarged foundation 10, and a protrusion is provided in the notch 11; grooved tooth keys 7 are provided on both sides of the roots of the front wall 2, the two side walls 4 and the back wall 6, and the depth of the grooved tooth keys 7 is 2.0 cm, which are used to combine with the notch 11 on the enlarged foundation 10.

[0008] Preferably, the grooved tooth key 7 is in the shape of a trapezoid, and the grooved tooth key 7 includes: a first inclined surface, located above the grooved tooth key 7, with a first side connected to the root and a second side inclined downward, for matching with the protrusion in the notch 11; a snap-fit ​​surface, arranged on the side of the grooved tooth key 7, adjacent to the first inclined surface, for contacting with the protrusion surface in the notch 11, providing fixed support, and preventing the protrusion from sliding or shifting; a second inclined surface, located below the grooved tooth key 7, with a first side connected to the root and a second side inclined upward, opposite to the first inclined surface; the spacing between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm.

[0009] Preferably, the abutment structure further includes: an anti-slip step 12 located at the bottom of the enlarged foundation 10 for resisting the sliding of the enlarged foundation 10 .

[0010] Preferably, the pipeline bin further comprises: one or more partitions 3 for dividing the bins, and the partitions 3 are provided with openings for the transverse pipelines to pass through.

[0011] Preferably, the side wall 4 is provided with an opening and a door 5 .

[0012] Preferably, an abutment structure block 9 is provided above the abutment support body 8 to prevent lateral displacement of the bridge.

[0013] According to another aspect of the present invention, a construction method for an abutment structure at the junction of a bridge and a tunnel is provided, characterized in that it includes the following steps: a notch 11 and a steel bar joint are provided on an expanded foundation 10; an abutment support body 8 is connected via the steel bar joint; a prefabricated front wall 2, partition 3, side wall 4 and back wall 6 are inserted into the notch 11, and connected to the expanded foundation 10 with concrete, wherein the side wall 4 is provided with an opening and a door body 5; a top plate 1 is hoisted to form a pipeline warehouse with the partition 3 and the side wall 4.

[0014] Preferably, before the prefabricated front wall 2, partition 3, side wall 4 and back wall 6 are inserted into the slot 11, it also includes: forming grooved tooth keys 7 at the roots of the front wall 2, partition 3, side wall 4 and back wall 6 respectively by making templates, and the grooved tooth keys 7 are trapezoidal in shape and 2.0 cm in depth, which are used to combine with the slot 11; wherein the grooved tooth key 7 includes: a first inclined surface, located above the grooved tooth key 7, with a first side connected to the root, and a second side inclined downward, which is used to match the protrusion in the slot 11; a snap-fit ​​surface, arranged on the side of the grooved tooth key 7, adjacent to the first inclined surface, used to contact the protrusion surface in the slot 11, provide fixed support, and prevent the protrusion from sliding or shifting; a second inclined surface, located below the grooved tooth key 7, with a first side connected to the root, and a second side inclined upward, opposite to the first inclined surface; the spacing between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm.

[0015] Preferably, the gap between the top plate 1 and the side wall 4 is sealed with polysulfide sealant, and the outer sides of the top plate 1, the side wall 4 and the back wall 6 are waterproofed with waterproof membrane; the top plate 1 is prefabricated with UHPC concrete slab with a thickness of 15 cm.

[0016] The present invention discloses an abutment structure at the junction of a bridge and a tunnel and a construction method thereof, the structure comprising: an abutment support body 8 for supporting the bridge; a pipeline warehouse, one side of which is connected to the abutment support body 8 and the other side of which is connected to the tunnel, wherein the pipeline warehouse comprises a front wall 2 with an opening, and the opening is used to pass the pipeline in the tunnel. The present invention can solve the problem that the pipeline at the junction of the bridge and the tunnel is not suitable for inspection and replacement and occupies a large area, and achieves the technical effect that the pipeline at the junction of the bridge and the tunnel can be inspected, repaired and replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A three-dimensional rendering of the abutment structure at the junction of a bridge and a tunnel according to an embodiment of the present invention;

[0019] Figure 2 A side view of the abutment structure at the junction of a bridge and a tunnel according to an embodiment of the present invention;

[0020] Figure 3 A schematic diagram of a notch and a tooth key of an abutment structure at a junction of a bridge and a tunnel according to an embodiment of the present invention;

[0021] Figure 4 A partial large-scale drawing of the tooth key of the abutment structure at the junction of the bridge and the tunnel according to an embodiment of the present invention; and

[0022] Figure 5 It is a schematic diagram of an application scenario of an abutment structure at the junction of a bridge and a tunnel according to an embodiment of the present invention.

[0023] In the figure: 1. Top plate; 2. Front wall; 3. Partition; 4. Side wall; 5. Door body; 6. Back wall; 7. Grooved key; 8. Abutment support body; 9. Abutment structure block; 10. Expanded foundation; 11. Notch; 12. Anti-slip step. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0025] Reference will now be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and described below. For ease of interpretation and precise definition in the appended claims, the terms "upper", "lower", "inner" and "outer" are used to describe features of the exemplary embodiments shown in the drawings with reference to their positions.

[0026] The embodiment of the present invention provides a bridge abutment structure at the junction of a bridge and a tunnel, such as Figure 1-3 As shown, it includes: an abutment support body 8 for supporting the bridge; a pipeline bin connected to the abutment support body 8 on one side and connected to the tunnel on the other side, wherein the pipeline bin includes a front wall 2 with an opening, and the opening is used for passing the pipeline in the tunnel.

[0027] In the prior art, there is a problem of insufficient pipeline space at the junction of bridges and tunnels, and difficulty in maintenance and replacement. In the embodiment of the present invention, by designing a pipeline warehouse, one side is connected to the abutment support body 8, and the other side is connected to the tunnel, and the front wall 2 is opened for the pipeline to pass through, which effectively solves the problem of insufficient pipeline layout space and difficulty in layout at the junction of bridges and tunnels. This structure simplifies the installation of pipelines, avoids the complex operation of additional excavation of pipeline channels required by traditional abutment structures, and also improves the convenience of pipeline maintenance, reducing construction and later maintenance costs.

[0028] According to an embodiment of the present invention, the pipeline bin also includes: a top plate 1, two side walls 4 and a back wall 6; the abutment structure also includes an enlarged foundation 10, which is located on the lower side of the pipeline bin and the abutment support body 8, and a notch 11 is provided on the enlarged foundation 10, and a protrusion is provided in the notch 11; grooved tooth keys 7 are provided on both sides of the roots of the front wall 2, the two side walls 4 and the back wall 6, and the depth of the grooved tooth keys 7 is 2.0 cm, which are used to combine with the notch 11 on the enlarged foundation 10.

[0029] In the embodiment of the present invention, the pipeline bin includes a top plate 1, two side walls 4 and a back wall 6. Combined with the design of the enlarged foundation 10, the notch 11 and the notched key 7 cooperate with each other, effectively improving the overall stability and anti-settlement ability of the structure. Compared with the traditional rigidly connected abutment structure, this design can better adapt to the changes in foundation settlement and avoid structural damage caused by settlement differences. At the same time, the combination of the notch and the key enhances the connection strength between the abutment and the foundation, ensuring the long-term safety of the bridge-tunnel junction.

[0030] According to an embodiment of the present invention, the shape of the grooved tooth key 7 is a trapezoid, and the grooved tooth key 7 includes: a first inclined surface, located above the grooved tooth key 7, with a first side connected to the root, and a second side inclined downward, for matching with the protrusion in the groove 11; a clamping surface, arranged on the side of the grooved tooth key 7, adjacent to the first inclined surface, for contacting with the protrusion surface in the groove 11, providing fixed support, and preventing the protrusion from sliding or shifting; a second inclined surface, located below the grooved tooth key 7, with a first side connected to the root, and a second side inclined upward, opposite to the first inclined surface; the spacing between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm.

[0031] In the embodiment of the present invention, this design allows the protrusion to be inserted along the first inclined surface and the second inclined surface, and stably fixed in the notch under the action of the clamping surface. The trapezoidal shape and the inclined surface design facilitate the insertion and fixation of the protrusion, while ensuring the stability and reliability of the structure.

[0032] According to an embodiment of the present invention, the abutment structure further includes: an anti-slip step 12 located at the bottom of the enlarged foundation 10 for resisting the sliding of the enlarged foundation 10 .

[0033] In the embodiment of the present invention, the abutment structure is provided with an anti-slip step 12, which is located at the bottom of the expanded foundation 10, and is used to effectively resist the sliding of the expanded foundation. Compared with the foundation sliding problem caused by unstable geology or complex construction conditions at the junction of the bridge and the tunnel in the prior art, the present invention greatly improves the anti-slip ability of the foundation by setting an anti-slip step, ensures the stability and safety of the structure under complex geological conditions, and reduces the risk of structural displacement or damage caused by sliding.

[0034] According to an embodiment of the present invention, the pipeline bin further comprises: one or more partitions 3 for dividing the bins, and the partitions 3 are provided with openings for the transverse pipelines to pass through.

[0035] In the embodiment of the present invention, one or more partitions 3 are provided in the pipeline warehouse for dividing the warehouse, and openings are provided on the partitions for the transverse pipelines to pass through. Compared with the problem of the existing technology that the pipelines are arranged in a disorderly manner and cross-linked, which makes maintenance difficult, the partition design effectively optimizes the partition layout of the pipelines, making the pipeline layout more neat and orderly, which not only improves the convenience of construction and maintenance, but also avoids interference between pipelines.

[0036] According to the embodiment of the present invention, the side wall 4 is provided with an opening and a door body 5 .

[0037] According to an embodiment of the present invention, an abutment structure stopper 9 is provided above the abutment support body 8 to prevent lateral displacement of the bridge.

[0038] In the embodiment of the present invention, an abutment structure stopper 9 is provided above the abutment support body 8 to prevent lateral displacement of the bridge.

[0039] Another embodiment of the present invention provides a construction method for an abutment structure at the junction of a bridge and a tunnel, characterized in that it includes the following steps: a notch 11 and a steel bar joint are provided on an expanded foundation 10; an abutment support body 8 is connected through the steel bar joint; a prefabricated front wall 2, partition 3, side wall 4 and back wall 6 are inserted into the notch 11, and connected to the expanded foundation 10 with concrete, wherein the side wall 4 is provided with an opening and a door body 5; a top plate 1 is hoisted to form a pipeline warehouse with the partition 3 and the side wall 4.

[0040] In the prior art, there is a problem of insufficient pipeline space at the junction of bridges and tunnels, which makes maintenance and replacement difficult. In the embodiment of the present invention, by designing a pipeline warehouse, one side is connected to the abutment support body 8, and the other side is connected to the tunnel, and an opening is opened in the front wall 2 for the pipeline to pass through, which effectively solves the problem of insufficient pipeline layout space and difficulty in layout at the junction of bridges and tunnels. It can simplify the installation of pipelines, avoid the complex operation of additional excavation of pipeline channels required by traditional abutment structures, and improve the convenience of pipeline maintenance.

[0041] According to an embodiment of the present invention, before the prefabricated front wall 2, partition 3, side wall 4 and back wall 6 are inserted into the slot 11, it also includes: forming a grooved tooth key 7 at the root of the front wall 2, partition 3, side wall 4 and back wall 6 respectively by making a template, the grooved tooth key 7 is trapezoidal in shape and has a depth of 2.0 cm, which is used to combine with the slot 11; wherein the grooved tooth key 7 includes: a first inclined surface, located above the grooved tooth key 7, with a first side connected to the root, and a second side inclined downward, which is used to match the protrusion in the slot 11; a clamping surface, arranged on the side of the grooved tooth key 7, adjacent to the first inclined surface, used to contact the protrusion surface in the slot 11, provide fixed support, and prevent the protrusion from sliding or shifting; a second inclined surface, located below the grooved tooth key 7, with a first side connected to the root, and a second side inclined upward, opposite to the first inclined surface; the spacing between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm.

[0042] According to an embodiment of the present invention, the gap between the top plate 1 and the side wall 4 is sealed with polysulfide sealant, and the outer sides of the top plate 1, the side wall 4 and the back wall 6 are waterproofed with waterproof membrane; the top plate 1 is prefabricated with UHPC concrete slab with a thickness of 15 cm.

[0043] The method of the present invention is further described in detail below in conjunction with specific implementation modes and drawings.

[0044] The main components of the present invention are as follows:

[0045] The lower part is an expanded foundation 10 and a skid-proof step 12, and a notch 11 is reserved on the expanded foundation 10. The abutment support 8 is connected to the expanded foundation 10, and the abutment support 8 is provided with a support as a support body of the upper structure. The upper side wall 4, the front wall 2, the back wall 6, the top plate 1, and the partition 3 are prefabricated plates, which are connected to the expanded foundation 10 with a notch 11. When the root of the partition 3 is prefabricated, a grooved tooth key 7 is formed.

[0046] Figure 4 This is a partial large-scale drawing of the tooth key of the abutment structure at the junction of the bridge and the tunnel according to an embodiment of the present invention, as shown in FIG. Figure 4 As shown, the grooved tooth key 7 is in the shape of a trapezoid with a depth of 2.0 cm, and is used to combine with the notch 11 on the enlarged base 10, including: a first inclined surface, located above the grooved tooth key 7, with a first side connected to the root, and a second side inclined downward, used to match the protrusion in the notch 11; a snap-fit ​​surface, arranged on the side of the grooved tooth key 7, adjacent to the first inclined surface, used to contact the protrusion surface in the notch 11, to provide fixed support, and prevent the protrusion from sliding or shifting; a second inclined surface, located below the grooved tooth key 7, with a first side connected to the root, and a second side inclined upward, opposite to the first inclined surface; the spacing between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm.

[0047] During construction, the side walls 4, the front wall 2, the back wall 6 and the partition 3 are inserted into the tooth grooves of the enlarged foundation 10, and UHPC concrete is poured into the grooves.

[0048] The top plate 1 is combined with the side walls 4, the front wall 2 and the back wall 6 to form a closed pipeline warehouse.

[0049] The gap between the top plate 1 and the side wall 4 is sealed with polysulfide sealant, and the top plate 1 and the side wall 4 are waterproofed with waterproof membrane.

[0050] The top plate 1 is prefabricated with UHPC concrete slabs with a thickness of 15 cm to reduce weight and facilitate later opening and maintenance.

[0051] The front wall 2 is connected to the tunnel and is provided with an opening for introducing the pipelines in the tunnel into the abutment pipeline bin.

[0052] An opening is provided on the partition 3 to facilitate the passage of the transverse pipe.

[0053] Openings and door opening devices are arranged on both sides of the side wall 4 to facilitate access for inspection and replacement.

[0054] The main construction method of the present invention is as follows:

[0055] The lower expanded foundation 10 and the anti-slip sill 12 are cast on site, and a notch 11 is reserved on the expanded foundation 10. The height of the expanded foundation 10, the size of the anti-slip sill 12, and the size of the reserved notch 11 are shown in Figure 2 shown.

[0056] A steel bar joint is reserved on the expanded foundation 10 , and the abutment support body 8 is cast according to the main beam elevation and connected to the expanded foundation 10 through the reserved steel bars.

[0057] The component factory prefabricates the upper side wall 4, the front wall 2, the back wall 6, the top plate 1, and the partition 3, and transports them to the construction site after prefabrication.

[0058] When the base of the partition 3 is prefabricated, a grooved key 7 is formed by making a template, and the key has a depth of 2.0 cm and a height of 12 cm.

[0059] According to the pipeline setting and equipment requirements at the location connected to the tunnel, the back wall 6 and the partition 3 are reserved with openings, and the side wall 4 is reserved with manholes for maintenance entry and exit.

[0060] The prefabricated side walls 4 , front wall 2 , back wall 6 , and partition 3 are inserted into the tooth grooves of the enlarged foundation 10 , and UHPC concrete is poured into the grooves to connect with the enlarged foundation 10 .

[0061] The side wall 4, the front wall 2, the back wall 6, the partition plate 3 and the expanded foundation 10 form a pipeline warehouse and a partition.

[0062] Lead the pipelines in the tunnel into the pipeline bin on the abutment and install pipeline-related equipment.

[0063] After the installation is completed, the top plate 1 is hoisted into place to form a closed warehouse body with the side walls 4 and the partitions 3.

[0064] The gap between the top plate 1 and the side wall 4 is sealed with polysulfide sealant, and the outside of the top plate 1, the side wall 4 and the back wall are waterproofed with waterproof membrane.

[0065] Door bodies 5 are installed at the manholes on both sides of the side walls for personnel to enter and exit for maintenance.

[0066] Figure 5 Schematic diagram of an application scenario of an abutment structure at the junction of a bridge and a tunnel according to an embodiment of the present invention. Figure 5 As shown, in order to integrate the pipelines at the junction of the bridge and the tunnel into the pipeline warehouse as much as possible, the personnel can enter the pipeline for inspection and replacement in the later stage. The present invention combines the pipeline warehouse with the expanded foundation to provide a closed and accessible underground pipeline space, solve the engineering problem of pipeline inspection, repair and replacement at the junction of the bridge and the tunnel, and reduce the volume of the expanded foundation. In order to better cooperate with the installation of pipeline equipment, speed up the construction progress and facilitate later maintenance, the pipeline warehouse adopts an assembled structure.

[0067] The present invention introduces the concept of integrated pipelines into the pipeline treatment at the junction of bridges and tunnels. It is used at the junction of bridges and tunnels to solve the problem that pipelines at the junction of bridges and tunnels are not easy to inspect and replace, and occupy a large amount of space, and achieves the technical effect of inspecting, repairing and replacing pipelines at the junction of bridges and tunnels. At the same time, it solves the engineering problem of the difficulty in setting up conversion wells after the pipelines exit the hole, so that the external landscape effect at the junction of bridges and tunnels is improved and the engineering land is reduced. The pipeline warehouse adopts an assembled structure, which can better cooperate with the installation of pipeline equipment, speed up the construction progress and facilitate later maintenance.

[0068] The above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications may be made based on the following description, and these various changes, modifications, substitutions and deformations derived from the principles and spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. A bridge abutment structure at the junction of a bridge and a tunnel, characterized in that: include: A bridge abutment support (8), used to support the bridge; A pipeline warehouse, one side of which is connected to the abutment support body (8) and the other side of which is connected to the tunnel, wherein the pipeline warehouse comprises a front wall (2) having an opening, the opening being used for passing the pipeline in the tunnel; The pipeline warehouse further comprises: a top plate (1), two side walls (4) and a back wall (6); The abutment structure further comprises an enlarged foundation (10), which is located at the lower side of the pipeline bin and the abutment support body (8), the enlarged foundation (10) being provided with a notch (11), and a protrusion being provided in the notch (11); Grooved tooth keys (7) are provided on both sides of the roots of the front wall (2), the two side walls (4) and the back wall (6); the depth of the grooved tooth keys (7) is 2.0 cm and is used to be combined with the notches (11) on the enlarged base (10); The grooved tooth key (7) is in the shape of a trapezoid, and the grooved tooth key (7) comprises: A first inclined surface, located above the grooved tooth key (7), with a first side connected to the root and a second side inclined downwardly for matching with a protrusion in the notch (11); A clamping surface, arranged on a side surface of the grooved tooth key (7), adjacent to the first inclined surface, and used for contacting the raised surface in the notch (11), providing fixed support, and preventing the raised surface from sliding or shifting; A second inclined surface, located below the grooved tooth key (7), with a first side connected to the root and a second side inclined upward and opposite to the first inclined surface; The distance between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm.

2. The abutment structure according to claim 1, characterized in that: Also includes: The anti-slip step (12) is located at the bottom of the enlarged foundation (10) and is used to resist the sliding of the enlarged foundation (10).

3. The abutment structure according to claim 2, characterized in that: The pipeline warehouse also includes: One or more partitions (3) are used to divide the compartments, and openings are provided on the partitions (3) for the passage of transverse pipelines.

4. The abutment structure according to claim 3, characterized in that: The side wall (4) is provided with an opening and a door body (5).

5. The abutment structure according to any one of claims 1 to 4, characterized in that: A bridge abutment structure stopper (9) is provided above the abutment support body (8) to prevent lateral displacement of the bridge.

6. A construction method for an abutment structure at the junction of a bridge and a tunnel according to claim 5, characterized in that: The following steps are involved: A notch (11) and a steel bar joint are provided on the enlarged foundation (10); Connecting the abutment support body (8) via the steel bar joint; A template is made to form grooved tooth keys (7) at the root of the front wall (2), the partition (3), the side wall (4) and the back wall (6), respectively. The grooved tooth keys (7) are in the shape of a trapezoid and have a depth of 2.0 cm, and are used to be combined with the notch (11); Wherein, the grooved tooth key (7) comprises: A first inclined surface, located above the grooved tooth key (7), with a first side connected to the root and a second side inclined downwardly for matching with a protrusion in the notch (11); A clamping surface, arranged on a side surface of the grooved tooth key (7), adjacent to the first inclined surface, and used for contacting the raised surface in the notch (11), providing fixed support, and preventing the raised surface from sliding or shifting; A second inclined surface, located below the grooved tooth key (7), with a first side connected to the root and a second side inclined upward and opposite to the first inclined surface; The distance between the first side of the first inclined surface and the first side of the second inclined surface is 12 cm; Inserting the prefabricated front wall (2), partition (3), side wall (4) and back wall (6) into the notch (11), and connecting them to the enlarged foundation (10) using concrete, wherein the side wall (4) is provided with an opening and a door body (5); The hoisting top plate (1) forms a pipeline warehouse with the partition plate (3) and the side wall (4).

7. The construction method according to claim 6, characterized in that: The gap between the top plate (1) and the side wall (4) is sealed with polysulfide sealant, and the outer sides of the top plate (1), the side wall (4) and the back wall (6) are waterproofed with waterproof roll material; The top plate (1) is prefabricated with a UHPC concrete plate and has a thickness of 15 cm.

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