Pier and buried bend pipe pier and bottom bend pipe pier

Abstract

The utility model discloses a kind of pier and buried bend pipe pier part and well bottom bend pipe pier part of vertical bend pipe connection, belong to municipal engineering industry pipeline technical field, wherein bend pipe includes pipeline elbow, horizontal straight pipe section and vertical straight pipe section, the pier includes first pier body and second pier body;The pipeline elbow is set in first pier body;Two ends of the pipeline elbow are vertical interface and horizontal interface respectively, and all are located outside first pier body;Horizontal straight pipe section and vertical straight pipe section are connected in horizontal interface and vertical interface respectively;Second pier body is connected in the side of first pier body opposite pipeline elbow horizontal interface, and the reaction of lifting horizontal direction is provided.The utility model of a kind of pier and buried bend pipe pier part and well bottom bend pipe pier part of vertical bend pipe connection can effectively solve the problem that pier cannot provide sufficient horizontal reaction in prior art, so as to cause bend pipe, which is perpendicular to horizontal plane and bends upwards, to be disconnected by horizontal component of water thrust and other problems.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline technology in municipal engineering. Specifically, it relates to a support for vertical bend connections, a support for buried bends, and a support for bottom bends in manholes. Background Technology

[0002] The National Building Standard Design Atlas 10S505, "Flexible Joint Water Supply Pipeline Supports," provides designs for supports for bends at various commonly used angles in both horizontal and vertical directions. Water supply pipelines have high water pressure, and the water thrust generated at bends in flexible joint water supply pipelines needs to be balanced by the passive earth pressure of the surrounding soil to prevent the bend from separating from the straight pipe section. Concrete supports can increase the contact surface with the soil, ensuring that the water thrust at the bend is less than the passive earth pressure provided by the soil behind the support, thus guaranteeing the safe operation of the water supply pipeline.

[0003] For bends that curve upwards perpendicular to the horizontal plane, the national standard drawing 10S505 provides support designs with three angles: 11.25°, 22.5°, and 45°. Figure 1 As shown in the diagram, the pipe elbow connects to the straight pipe section via a socket. The water thrust generated by the internal water pressure is directed downwards along the symmetrical axis of the elbow. Concrete supports are symmetrically installed horizontally and obliquely below the elbow to diffuse the water thrust. This support design has the following shortcomings: the maximum angle supported by this support is 45°; for a 90° vertical upward bend, the horizontal and vertical components of the water thrust are equal, and because the reaction force provided by the soil in the vertical direction is much greater than that in the horizontal direction, the soil contact area required for the support in the horizontal direction is larger. The national standard drawing set for vertical upward bend supports, which has a consistent contact surface symmetrically installed horizontally and obliquely, is not applicable. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings by providing a support for vertical bend connections, a buried bend support component, and a well bottom bend support component, thereby solving the problem that existing supports cannot provide sufficient horizontal reaction force, leading to the breakage of bends bent vertically upwards under the horizontal component of water thrust. To achieve the above objective, this utility model provides the following technical solution: A support pier for a vertical bend connection, wherein the bend includes a pipe elbow, a horizontal straight pipe section, and a vertical straight pipe section, and the support pier includes a first pier body and a second pier body; the pipe elbow is disposed within the first pier body; the two ends of the pipe elbow are a vertical interface and a horizontal interface, respectively, both located outside the first pier body; the horizontal straight pipe section and the vertical straight pipe section are respectively connected to the horizontal interface and the vertical interface; the second pier body is connected to the first pier body on the side opposite to the horizontal interface of the pipe elbow, thereby increasing the horizontal reaction force.

[0005] Furthermore, the second pier is an outward diffusion section of the first pier, wherein the diffusion angle on both sides connected to the first pier is a rigid angle of 45° for concrete material.

[0006] Furthermore, the second pier has an upward gradient of 1:2 in the direction away from the first pier.

[0007] Furthermore, both the first and second piers are made of cast concrete and are installed as a single unit.

[0008] Furthermore, the first pier, the second pier, and the bend share the same line of symmetry.

[0009] A buried pipe bend support includes a support for a vertical pipe bend connection as described above. The first and second supports are located in the ground and covered by soil. Both the horizontal and vertical interfaces of the bend are provided with sealing structures.

[0010] A well bottom bend pipe support component includes the aforementioned support for a vertical bend pipe connection, wherein the first support body and the second support body are disposed on the well bottom plate; both the horizontal and vertical interfaces of the bend pipe are provided with sealing structures.

[0011] Furthermore, the side of the second pier that faces away from the first pier is connected to the well wall.

[0012] Furthermore, four shear-resistant steel bars are evenly provided on the bottom plate of the well, extending into the perimeter of the bend of the first pier.

[0013] Furthermore, the bottom end of the shear reinforcement is bent at 90°.

[0014] The beneficial effects of this utility model are: This application discloses a support pier for a vertically bent pipe connection, specifically a 90° vertically upward bend support pier, expanding the applicability of vertically upward bend support piers. Considering the characteristics of soil mechanics, the support pier expands outward in the horizontal direction where soil reaction is relatively low to increase the soil contact area, making the horizontal soil reaction force close to the vertical soil reaction force to meet the pipe stress requirements. The horizontal expansion angle is 45°, the rigidity angle of concrete, maximizing the utilization of material properties; the upward expansion angle is a 1:2 slope, ensuring ease of construction. Attached Figure Description

[0015] Figure 1 This is a top view of the structure of the buried bend pipe support component of this utility model; Figure 2 for Figure 1 AA section view; Figure 3 This is a top view of the structure of the well bottom bend support component of this utility model; Figure 4 for Figure 3CC section view; In the attached diagram: 1. Pipe elbow; 2. Horizontal straight pipe section; 3. Vertical straight pipe section; 4. First pier; 5. Second pier; 6. Vertical interface; 7. Horizontal interface; 8. Bottom plate of the well; 9. Well wall; 10. Shear reinforcement. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. 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. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Example 1: See attached Figures 1-4 This embodiment provides a support for a vertical bend, used to support a 90° vertical bend. The bend is formed by connecting a pipe elbow 1, a horizontal straight pipe section 2, and a vertical straight pipe section 3. The support prevents the connection between the pipe elbow 1 and the horizontal and vertical straight pipe sections 2 and 3 from breaking due to water thrust. Specifically, this embodiment's support for a vertical bend includes a first support body 4 and a second support body 5. The pipe elbow 1 is disposed within the first support body 4, which is preferably a cubic structure. After installation, the pipe elbow 1 and the first support body 4 have the same vertical symmetry plane, as shown in the attached figure. Figure 1As shown, the pipe elbow 1 is equipped with a vertical interface 6 and a horizontal interface 7. The vertical interface 6 is located above the first pier 4 and connects to the vertical straight pipe section 3. The horizontal interface 7 is located on one side of the first pier 4 and connects to the horizontal straight pipe section 2. The second pier 5 is located on the side of the first pier 4 away from the horizontal interface 7. It is used to further provide a horizontal reaction force to ensure that when water flows in the bend, the horizontal and vertical components of the water thrust on the bend can be canceled out by the reaction forces provided by the first pier 4 and the second pier 5. This prevents the vertical straight pipe section 3 and the horizontal straight pipe section 2 from being separated from the pipe elbow 1 by the water thrust, thus avoiding water leakage and interruption.

[0019] In this embodiment, both the second pier 5 and the first pier 4 are made of cast concrete. The second pier 5 extends outward from the side of the first pier 4 away from the horizontal interface 7, as shown in the attached figure. Figure 1 As shown in the top view, it spreads outward from both ends on the first pier 4 side, with a diffusion angle of 45°, which is the rigid angle of the concrete material, and an upward diffusion slope of 1:2 to facilitate concrete pouring.

[0020] Example 2: See attached Figures 1-2 This embodiment provides a buried pipe bend support component, which is applied in municipal buried pipelines. A first support body 4 and a second support body 5 are poured within the designed ground surface. Because the reaction force provided by the soil in the vertical direction is much greater than that in the horizontal direction, the second support body 5 is needed to expand the contact area with the soil to provide a greater horizontal reaction force, so as to meet the horizontal force of water thrust and ensure a stable connection between the pipe bend 1 and the horizontal straight pipe section 2.

[0021] In this embodiment, the first pier 4 is a cubic structure, and the second pier 5 extends outward from the side of the first pier 4 away from the horizontal interface 7, as shown in the attached figure. Figure 1 As shown in the top view, it spreads outward from both ends on the first pier 4 side, with a diffusion angle of 45°, which is the rigid angle of the concrete material. The upward diffusion slope is 1:2 to facilitate concrete pouring. The lateral width of the diffusion of the second pier 5 is consistent with the width of the first pier 4, so as to achieve sufficient contact surface with the soil and thus improve the horizontal reaction force.

[0022] In this embodiment, a sealing structure, preferably a sealing ring structure, is provided at the connection between the vertical interface 6 of the pipe elbow 1 and the vertical straight pipe section 3; a sealing structure, preferably a sealing ring structure, is also provided at the connection between the horizontal interface 7 and the horizontal straight pipe section 2.

[0023] In this embodiment, the dimensions of the first pier 4 and the second pier 5 corresponding to different pipe diameters are listed. The distances between the pipe elbow 1 and the two sides of the first pier 4 are 200mm and 300mm, respectively. The horizontal straight pipe section 2 is 200mm from the top of the first pier 4. Other dimensions are shown in Table 1.

[0024] In Table 1, Hs is the height of the horizontal straight pipe section 2 from the designed ground level, L is the length of the second pier 5, L0 is the length of the first pier 4, H is the height of the second pier 5, H1 is the distance of the horizontal straight pipe section 2 from the bottom of the first pier 4, H2 is the distance of the second pier 5 from the designed ground level, and B is the width of the second pier 5.

[0025] Example 3: See attached Figures 3-4 This embodiment provides a support for a pipe bend at the bottom of a well, used in a pipe bend at the bottom of a well. A first support 4 and a second support 5 are poured at the pipe location at the bottom of the well. The second support 5 extends towards the well wall 9 until it contacts the well wall 9, with an extension angle of 45° (the rigid angle of concrete) and an upward extension slope of 1:2. (See attached diagram.) Figure 3 As shown.

[0026] In this embodiment, shear reinforcement bars 10 are provided inside the well bottom plate 8, preferably four shear reinforcement bars 10. The upper part of the shear reinforcement bars 10 extends above the well bottom plate 8. The first pier 4 is cast on the shear reinforcement bars 10, so that the four shear reinforcement bars 10 are evenly located inside the first pier 4, surrounding the bend, as shown in the attached figure. Figure 3 As shown.

[0027] In this embodiment, a sealing structure, preferably a sealing ring structure, is provided at the connection between the vertical interface 6 of the pipe elbow 1 and the vertical straight pipe section 3; a sealing structure, preferably a sealing ring structure, is also provided at the connection between the horizontal interface 7 and the horizontal straight pipe section 2.

[0028] In this embodiment, the bottom end of the shear reinforcement 10 located in the well bottom slab 8 is bent at 90°, which increases the anchorage length between the shear reinforcement 10 and the well bottom slab 8, ensuring a firm connection between the shear reinforcement 10 and the well bottom slab 8, thereby improving the overall stability and load-bearing capacity of the structure and enhancing the anchorage effect within the well bottom slab 8; at the same time, it can also prevent the shear reinforcement 10 from shifting under external forces, ensuring the stability of the shear reinforcement 10 in the well bottom slab 8 and avoiding structural damage. The bottom of the first pier 4 transmits the vertical thrust to the well bottom slab 8 through the shear reinforcement 10. The space between the first pier 4 and the well wall 9 is filled with the second pier 5 to prevent the first pier 4 from overturning, while simultaneously transmitting the horizontal thrust to the well wall 9.

[0029] In this embodiment, the dimensions of the first pier 4 and the second pier 5 corresponding to different pipe diameters are listed. The distances between the pipe elbow 1 and the two sides of the first pier 4 are 150mm and 150mm, respectively. Here, d is the diameter of the shear reinforcement 10, n is the number of shear reinforcement 10, and the depth of the shear reinforcement 10 extending into the first pier 4 is 15d. Other dimensions are shown in Table 2.

[0030] In Table 2, L represents the width of the first pier 4, B represents the length of the first pier 4, and H represents the height of the first pier 4.

[0031] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A support for a vertical bend connection, wherein the bend comprises a pipe elbow (1), a horizontal straight pipe section (2), and a vertical straight pipe section (3), characterized in that: The support includes a first support body (4) and a second support body (5); the pipe elbow (1) is located inside the first support body (4); the two ends of the pipe elbow (1) are a vertical interface (6) and a horizontal interface (7), respectively, and both are located outside the first support body (4); the horizontal straight pipe section (2) and the vertical straight pipe section (3) are respectively connected to the horizontal interface (7) and the vertical interface (6); the second support body (5) is connected to the first support body (4) on the side opposite to the horizontal interface (7) of the pipe elbow (1), thereby increasing the horizontal reaction force.

2. A pier for a vertical elbow connection according to claim 1, characterized in that: The second pier (5) is the outward diffusion section of the first pier (4), wherein the diffusion angle on both sides connected to the first pier (4) is the rigid angle of the concrete material 45°.

3. A pier for a vertical elbow connection according to claim 2, characterised in that: The second pier (5) spreads upward in a direction away from the first pier (4) with a slope of 1:

2.

4. A pier for a vertical elbow connection according to claim 3, characterized in that: Both the first pier (4) and the second pier (5) are made of concrete and are set up as a whole.

5. A pier for a vertical elbow connection according to claim 4, characterised in that: The first pier (4), the second pier (5), and the bend share the same line of symmetry.

6. A buried bend pier member comprising a vertical bend connection pier as claimed in claim 5, characterised in that: The first pier (4) and the second pier (5) are located in the ground and covered by soil; the horizontal interface (7) and the vertical interface (6) of the bend are both equipped with sealing structures.

7. A downhole elbow bolster member comprising a vertical elbow connection bolster as claimed in claim 5, characterized in that: The first pier (4) and the second pier (5) are located on the bottom plate (8) of the well; the horizontal interface (7) and the vertical interface (6) of the bend are both equipped with sealing structures.

8. A downhole elbow bolster piece according to claim 7, characterized in that: The second pier (5) is connected to the well wall (9) on the side away from the first pier (4).

9. A downhole elbow bolster piece according to claim 7, wherein: Four shear-resistant steel bars (10) are evenly provided on the bottom plate (8) of the well, extending into the bend of the first pier (4).

10. A downhole elbow bolster piece according to claim 9, characterized in that: The bottom end of the shear-resistant steel bar (10) is bent at 90°.

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