A protection structure for existing pipelines under a retaining wall

Abstract

The utility model discloses a protection structure of existing pipeline under retaining wall relates to pipeline protection technical field, including first layer wall body, concrete slab and second layer wall body, first layer wall body constructs on the foundation, and first layer wall body is equipped with the protection passage of penetration, and the protection passage is used for accommodating existing pipeline, and the direction of protection passage penetration first layer wall body is defined as first direction, and the direction perpendicular with first direction is defined as second direction, concrete slab cover is established in the upper of protection passage, along second direction, and both ends of concrete slab are built on first layer wall body, second layer wall body constructs on the upper of first layer wall body, and second layer wall body covers concrete slab, the protection structure of existing pipeline under retaining wall of the utility model, the overall cost is lower, can bear larger load still, reduces retaining wall settlement risk.

Description

Technical Field

[0001] This utility model relates to the field of pipeline protection technology, and in particular to a protective structure for existing pipelines under retaining walls. Background Technology

[0002] In engineering construction, conflicts often arise between the location of retaining walls and existing pipelines, meaning the retaining wall needs to cross existing pipelines. For pipelines that cannot be moved or relocated, reliable protective measures must be taken to protect them. Existing solutions include constructing integrated utility tunnels, but these are costly.

[0003] In other construction schemes, such as document CN219011235U, a protective structure for existing pipelines in areas with good soil conditions is provided. This involves using a U-shaped culvert to cover the pipeline, with buffer material filling the space between the pipeline, the top slab of the culvert, and the side walls. A counterweight filler is placed between the outer wall of the culvert and the municipal road. However, this technology is only suitable for existing pipeline protection structures in areas with relatively low loads on the U-shaped culvert and good soil conditions. If heavy-load structures are built on top of the culvert, the load transmitted from the culvert to the foundation increases, raising the risk of culvert settlement, which can damage the pipeline. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a protective structure for existing pipelines under retaining walls, which has a lower overall cost, can bear a larger load, and reduces the risk of retaining wall settlement.

[0005] The protective structure for existing pipelines under the retaining wall according to an embodiment of the present utility model includes: a first layer wall, the first layer wall being constructed on the foundation, the first layer wall having a through protective channel, the protective channel being used to accommodate existing pipelines, the direction in which the protective channel penetrates the first layer wall being defined as a first direction, and the direction perpendicular to the first direction being defined as a second direction; A concrete slab, which is placed over the protective passage, with both ends of the concrete slab resting on the first layer of wall along the second direction; The second wall is constructed above the first wall and covers the concrete slab.

[0006] The protective structure for existing pipelines under the retaining wall according to the embodiments of this utility model has at least the following beneficial effects: the first layer of the wall is provided with a protective channel in which the existing pipeline can exist; at the same time, the first layer of the wall also serves as the supporting foundation for the concrete slab; the concrete slab is placed on the protective channel, and a second layer of the wall can be constructed on top of the concrete slab, forming a complete retaining wall with the first and second layers of the wall; the load of the second layer of the wall is transferred to the first layer of the wall through the concrete slab, and finally to the foundation, thus protecting the existing pipeline; the overall cost of the above structure is low.

[0007] According to some embodiments of the present invention, the first layer of wall is provided with two support parts, which are distributed on both sides of the protective channel along the second direction, and the support parts extend along the wall surface direction perpendicular to the first layer of wall.

[0008] According to some embodiments of the present invention, along the second direction, the length of one end of the concrete slab laid on the first layer wall is equal to the length of the other end of the concrete slab laid on the first layer wall, and the lengths are both L1.

[0009] According to some embodiments of the present invention, the length of the support portion along the second direction is L2, and L2 > L1.

[0010] According to some embodiments of the present invention, the first direction forms an angle α with the length direction of the first layer of wall, and α ≤ 90°.

[0011] According to some embodiments of the present invention, the concrete slab has multiple reinforcing bars inside.

[0012] According to some embodiments of the present invention, the laying plane of the plurality of steel bars is parallel to the surface of the concrete slab, and the steel bars are located on the side of the concrete slab closer to the protective channel.

[0013] According to some embodiments of the present invention, the concrete slab is provided with multiple first reinforcing bars and multiple second reinforcing bars inside, and the first reinforcing bars and the second reinforcing bars are arranged intersectingly.

[0014] According to some embodiments of the present invention, both ends of the first reinforcing bar are provided with bent portions, and the bent portions are perpendicular to the length direction of the first reinforcing bar.

[0015] According to some embodiments of the present invention, the intersection of the first reinforcing bar and the second reinforcing bar is tied with stirrups.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a front cross-sectional view of the protective structure for existing pipelines under the retaining wall in an embodiment of this utility model. Figure 2 This is a top sectional view of the protective structure for existing pipelines under the retaining wall in an embodiment of this utility model. Figure 3 This is a schematic diagram of the concrete slab structure according to an embodiment of the present invention.

[0018] Icon labels: First wall 100, protective passage 110, support 120, concrete slab 200, first reinforcing bar 210, bending part 211, second reinforcing bar 220, second wall 300; There is an existing pipeline of 400. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of the 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 this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figure 1 As shown, an embodiment of the present invention provides a protective structure for existing pipelines under a retaining wall, comprising a first wall 100, a concrete slab 200, and a second wall 300.

[0024] The first wall 100 is constructed on the foundation and has a through protective channel 110 for accommodating existing pipes. The direction in which the protective channel 110 penetrates the first wall 100 is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. A concrete slab 200 is placed on top of the protective channel 110 and, along the second direction, its two ends are attached to the first wall 100. The second wall 300 is constructed on top of the first wall 100 and covers the concrete slab 200.

[0025] The first wall 100 is provided with a protective channel 110, in which existing pipes can exist. At the same time, the first wall 100 also serves as the supporting foundation for the concrete slab 200.

[0026] A concrete slab 200 is placed over the protective passage 110. A second wall 300 can be constructed on top of the concrete slab 200, forming a complete retaining wall with the first wall 100 and the second wall 300. The load of the second wall 300 is transferred to the first wall 100 through the concrete slab 200 and ultimately to the foundation, thus protecting the existing pipeline. The overall cost of this structure is lower than that of a utility tunnel.

[0027] Furthermore, in order to reduce the risk of settlement of the overall structure, refer to Figure 2 As shown, it can be understood that the first layer wall 100 is provided with two support parts 120, which are distributed on both sides of the protection channel 110 along the second direction. The support parts 120 extend along the wall direction perpendicular to the first layer wall 100.

[0028] The support portion 120 increases the contact area between the first-layer wall 100 and the foundation. Under the same load, the increased contact area between the first-layer wall 100 and the support portion 120 and the foundation reduces stress and lowers the risk of foundation settlement. It should be understood that the support portion 120 is positioned on both sides of the protective channel 110 to distribute the load transmitted from the concrete slab 200 to the first-layer wall 100.

[0029] During construction, the first layer of walls 100 is constructed on both sides of the existing pipeline. After the upper surface of the first layer of walls 100 extends beyond the top of the existing pipeline, leaving a gap c, concrete slabs 200 are then constructed. Once the concrete slabs 200 reach their design strength, subsequent construction, namely the construction of the second layer of walls 300, continues. It should be understood that the concrete slabs 200 can also be prefabricated based on on-site measurement data. In the above construction steps, the area where the first layer of walls 100 is constructed on both sides of the existing pipeline becomes the protective passage 110. Preferably, the cross-sectional dimension of the protective passage 110 is larger than the dimension of the existing pipeline exposed above the foundation, that is, the existing pipeline is kept at a certain distance from the inner wall of the protective passage 110.

[0030] In some embodiments, it is understood that, along the second direction, the length of one end of the concrete slab 200 resting on the first wall 100 is equal to the length of the other end of the concrete slab 200 resting on the first wall 100, and both lengths are L1. Further, the length of the support portion 120 along the second direction is L2, and L2 > L1.

[0031] When L2 > L1, the area of ​​the reinforced structure provided by the support 120 can cover the area where the concrete slab 200 is erected on the first wall 100, so that the load transferred from the concrete slab 200 to the first wall 100 can be distributed to the support 120 as much as possible, thereby reducing the risk of structural settlement.

[0032] It is understandable that the first direction forms an angle α with the length direction of the first layer of wall 100, and α ≤ 90°.

[0033] When the included angle α is 90°, it indicates that the length direction of the constructed first-layer wall 100 is perpendicular to the direction of the existing pipeline, meaning the existing pipeline passes through the retaining wall along its thickness. It should be understood that in some embodiments, the existing pipeline is not perpendicular to the thickness of the retaining wall. In this case, the angle between the existing pipeline and the retaining wall, i.e., the length direction of the first-layer wall 100, is an acute angle, meaning the included angle α is less than 90°.

[0034] Reference Figure 3 As shown, it can be understood that the concrete slab 200 has multiple reinforcing bars inside. The reinforcing bars are used to strengthen the structural strength of the concrete slab 200 and to improve its load-bearing capacity.

[0035] It is understandable that the plane in which the multiple reinforcing bars are laid is parallel to the surface of the concrete slab 200, and the reinforcing bars are located on the side of the concrete slab 200 closer to the protective passage 110.

[0036] The concrete slab 200 has a gap at the bottom on the side closest to the protective channel 110, meaning that when subjected to load, both ends of the concrete slab 200 bend upwards along the second direction. The side of the concrete slab 200 closest to the protective channel 110 mainly experiences tensile stress, while the side furthest from the protective channel 110 mainly experiences compressive stress. In concrete structures, the compressive strength of concrete is much greater than its tensile strength; therefore, placing the reinforcing steel bars closer to the protective channel 110 on the side of the concrete slab 200 can significantly improve its load-bearing capacity.

[0037] It is understood that the concrete slab 200 contains multiple first reinforcing bars 210 and multiple second reinforcing bars 220, which are arranged intersectingly. Preferably, stirrups are tied at the intersection of the first reinforcing bars 210 and the second reinforcing bars 220.

[0038] It is understandable that both ends of the first reinforcing bar 210 are provided with bent portions 211, and the bent portions 211 are perpendicular to the length direction of the first reinforcing bar 210.

[0039] When the plane in which the first reinforcing bar 210 is laid is parallel to the concrete slab 200, the bent portion 211 of the first reinforcing bar 210 can be located within the side wall of the concrete slab 200, further improving the side wall strength of the concrete slab 200 and reducing the risk of cracking of the side wall of the concrete slab 200.

[0040] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A protective structure for existing pipelines under a retaining wall, characterized in that, include: The first layer of wall is built on the foundation and has a through protective channel for accommodating existing pipes. The direction in which the protective channel penetrates the first layer of wall is defined as the first direction, and the direction perpendicular to the first direction is defined as the second direction. A concrete slab is placed over the protective passage, and along the second direction, both ends of the concrete slab are attached to the first layer of wall. The second wall is constructed above the first wall and covers the concrete slab.

2. The protective structure for existing pipelines under the retaining wall according to claim 1, characterized in that, The first layer of wall is provided with two support parts, which are distributed on both sides of the protective channel along the second direction and extend along the wall surface perpendicular to the first layer of wall.

3. The protective structure for existing pipelines under the retaining wall according to claim 2, characterized in that, Along the second direction, the length of one end of the concrete slab that is attached to the first layer of wall is equal to the length of the other end of the concrete slab that is attached to the first layer of wall, and both lengths are L1.

4. The protective structure for existing pipelines under the retaining wall according to claim 3, characterized in that, The length of the support portion along the second direction is L2, and L2 > L1.

5. The protective structure for existing pipelines under the retaining wall according to claim 1, characterized in that, An angle α is formed between the first direction and the length direction of the first layer of wall, and α ≤ 90°.

6. The protective structure for existing pipelines under the retaining wall according to claim 1, characterized in that, The concrete slab contains multiple reinforcing bars.

7. The protective structure for existing pipelines under a retaining wall according to claim 6, characterized in that, The plane in which the multiple reinforcing bars are laid is parallel to the surface of the concrete slab, and the reinforcing bars are located on the side of the concrete slab closer to the protective channel.

8. The protective structure for existing pipelines under the retaining wall according to claim 7, characterized in that, The concrete slab is provided with multiple first reinforcing bars and multiple second reinforcing bars inside, with the first reinforcing bars and the second reinforcing bars arranged intersecting each other.

9. The protective structure for existing pipelines under a retaining wall according to claim 8, characterized in that, Both ends of the first reinforcing bar are provided with bent portions, and the bent portions are perpendicular to the length direction of the first reinforcing bar.

10. The protective structure for existing pipelines under a retaining wall according to claim 8, characterized in that, The intersection of the first and second reinforcing bars is tied with stirrups.

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