Buttress for large-diameter nodular cast iron pipe concrete encapsulation

Abstract

The utility model discloses a buttress for large-diameter nodular cast iron pipe concrete encapsulation, which mainly comprises an upper buttress body and a lower buttress body, the lower buttress body is supported by a support table, and the contact area between the support table and a soil layer is larger, so that more soil layers support the upper buttress body and the lower buttress body, and the support table is more suitable for the large-diameter nodular cast iron pipe concrete encapsulation. Therefore, the acting force borne by the soil layer in the unit volume in the vertical direction is low, the situation that the soil layer bears the large acting force in the vertical direction is avoided, supporting of the buttress to the pipeline is stable, and the situation that the position of the pipeline deviates in the vertical direction is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water conveyance pipeline support, in particular to a pier for concrete encapsulation of large-diameter ductile iron pipes. Background Technique

[0002] Ductile iron pipes are often used in underground water conveyance pipelines such as roads and cities. When laying ductile iron pipes, it is necessary to use concrete to encapsulate the pipes. Pipe encapsulation mainly refers to using concrete or other materials to wrap and seal the surrounding of the pipes to form a protective layer. The main purpose is to protect the pipes from the influence of the external environment, such as corrosion, impact, temperature change, etc., and at the same time enhance the overall stability and bearing capacity of the pipes.

[0003] In the prior art, when encapsulating pipes, for pipes with a long length and a large span, it is necessary to use support devices such as piers to support the pipes, so as to limit and fix the pipes, and then make the pipe position stable, so as to avoid the displacement of the pipes during encapsulation, and then cause the catheter to skew, and then cause gaps between the pipes. However, when using piers, there are still the following problems:

[0004] 1. When laying pipes, if the pipe diameter is large, the mass of the pipes and piers is large. Over time, the pipes and piers squeeze the soil layer, making the soil layer compact, resulting in the lowering of the soil layer supporting the piers and pipes during pipe encapsulation, and then causing the displacement of the pipe position, resulting in poor pipe encapsulation effect or gaps between the pipes.

[0005] Therefore, there is an urgent need for a pier that can stably support the pipes to avoid the displacement of the pipe position. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a pier for concrete encapsulation of large-diameter ductile iron pipes, which is used to solve the technical problem of pipe position deviation caused by the lowering of the soil layer when the pier supports the pipes.

[0007] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0008] A pier for concrete encapsulation of large-diameter ductile iron pipes is arranged on the ground and used to support the pipes, including an upper pier body arranged on the ground, the pier body having a first arc surface adapted to the pipes; and a lower pier body supported on the lower surface of the upper pier body, and support platforms are arranged on both side wall surfaces of the lower pier body, and the support platforms are perpendicular to both side surfaces of the lower pier body.

[0009] In some embodiments, a plurality of triangular prisms are arranged on the lower surface of the support platform, and the plurality of triangular prisms are arranged at intervals on the lower surface of the support platform in sequence.

[0010] In some embodiments, three edges of the triangular prism are parallel to the two side surfaces of the lower pier body.

[0011] In some embodiments, there are multiple support platforms, and the multiple support platforms are arranged in sequence and spaced apart on both side surfaces of the lower pier body along the vertical direction.

[0012] In some embodiments, the lower pier body has a groove, the notch of the groove faces the upper pier body, the groove is arranged on the lower side of the upper pier body, and the surface of the upper side wall of the lower pier body fits with the surface of the lower side wall of the upper pier body.

[0013] In some embodiments, a second arc surface is provided on the side of the lower pier body facing away from the upper pier body, and the second arc surface is oriented in the same direction as the first arc surface.

[0014] In some embodiments, a plurality of support columns are disposed on the surface of the second arc surface, and the plurality of support columns are sequentially spaced apart along the surface of the second arc surface.

[0015] In some embodiments, it also includes multiple fixing ribs, the upper surfaces of the two opposite side walls of the lower pier body are provided with multiple slots, and the two side walls of the upper pier body are provided with through holes in the vertical direction. When the upper pier body is arranged on the upper side of the lower pier body, the multiple through holes are aligned with the multiple slots, and the multiple fixing ribs pass through the multiple through holes and are inserted into the multiple slots respectively.

[0016] In some embodiments, a plurality of longitudinal friction pads are disposed on the surface of the first arc surface, and the plurality of longitudinal friction pads are sequentially spaced apart along the circumference of the first arc surface.

[0017] In some embodiments, a plurality of transverse friction pads are provided between two adjacent longitudinal friction pads, and the plurality of transverse friction pads are spaced in sequence along the axial direction of the first arc surface, and the surfaces of the transverse friction pads and the longitudinal friction pads are adapted to the outer wall of the pipe.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] In the utility model, the lower pier body is supported by the support platform, and because the contact area between the support platform and the soil layer is large, more soil layers support the upper pier body and the lower pier body, so that the soil layer within a unit volume is subjected to a lower force in the vertical direction, thereby preventing the soil layer from being subjected to a large force in the vertical direction, and making the support of the pipeline by the pier more stable, thereby preventing the pipeline position from shifting in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related accompanying drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 Front sectional view of the pier for concrete encapsulation of large-diameter ductile iron pipes according to an embodiment of the present application;

[0022] Figure 2 Top view of the pier for concrete encapsulation of large-diameter ductile iron pipes according to an embodiment of the present application;

[0023] Figure 3 Front view of the lower pier body of the pier for concrete encapsulation of large-diameter ductile iron pipes according to an embodiment of the present application;

[0024] Figure 4 Top view of the lower pier body of the pier for concrete encapsulation of large-diameter ductile iron pipes according to an embodiment of the present application;

[0025] Figure 5 Bottom view of the lower pier body of the pier for concrete encapsulation of large-diameter ductile iron pipes according to an embodiment of the present application;

[0026] Figure 6 For an embodiment of the present application Figure 1 Enlarged view of reference numeral A in the accompanying drawings;

[0027] Reference numerals:

[0028] 100 - upper pier body, 110 - first arc surface, 120 - through hole, 130 - longitudinal friction pad, 140 - transverse friction pad,

[0029] 200 - lower pier body, 210 - support platform, 211 - triangular prism, 220 - groove, 230 - second arc surface, 240 - support column, 241 - inner cavity, 250 - slot,

[0030] 300 - fixing bar,

[0031] 400 - ground. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the utility model product is usually placed during use. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0035] In addition, if terms such as "first", "second", "third", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0036] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, if terms such as "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0038] It should be noted that, without conflict, the features in the embodiments of the present utility model can be combined with each other.

[0039] It should be understood that when laying a pipeline, if the pipeline diameter is large, the mass of the pipeline and the abutment is large. Over time, the pipeline and the abutment squeeze the soil layer, making the soil layer compact. As a result, when the pipeline is encapsulated, the soil layer supporting the abutment and the pipeline drops, leading to the deviation of the pipeline position, and thus resulting in a poor effect of pipeline encapsulation or gaps between pipelines.

[0040] To improve the above problems, this embodiment provides an abutment for the concrete encapsulation of large-diameter ductile iron pipes, which mainly includes an upper abutment body 100 and a lower abutment body 200. This device is used to support the large-diameter ductile iron pipe during encapsulation.

[0041] As Figure 1 and Figure 2 shown, the upper abutment body 100 is arranged on the upper side of the ground 400 and is used to support the pipeline. The upper abutment body 100 has a first arc surface 110 adapted to the pipeline. When the pipeline is placed on the first arc surface 110 of the upper abutment body 100, the outer wall surface of the pipeline fits with the first arc surface 110, so that the upper abutment body 100 stably supports the pipeline.

[0042] Among them, the upper abutment body 100 can adopt structures such as a rectangular body and an isosceles trapezoid body. In this embodiment, the upper abutment body 100 adopts an isosceles trapezoid body, and the upper bottom surface of the upper abutment body 100 is recessed towards the lower bottom to form the first arc surface 110. Specifically, the two ends of the arc surface extend to form a complete cylinder. Among them, the first arc surface 110 runs through the upper abutment body 100 along the axial direction.

[0043] When the upper abutment body 100 is placed on the horizontal ground 400, the upper surfaces of the side walls of the upper abutment body 100 at both ends of the first arc surface 110 are parallel to the horizontal ground 400.

[0044] The lower abutment body 200 supports the lower surface of the upper abutment body 100. Specifically, as Figure 1 and Figure 2 shown, the upper surface of the lower abutment body 200 fits with the lower surface of the lower abutment body 200, so that the lower abutment body 200 supports the upper abutment body 100.

[0045] In this embodiment, the lower abutment body 200 is arranged in the soil layer, and support platforms 210 are provided on both side wall surfaces of the lower abutment body 200. The support platforms 210 are perpendicular to the two side surfaces of the lower abutment body 200 and parallel to the horizontal ground 400, so that the contact area between the support platforms 210 and the soil layer is large. As a result, more soil layers support the upper abutment body 100 and the lower abutment body 200, so that the soil layer in the unit volume receives a lower vertical force, thereby avoiding the large mass of the upper abutment body 100, the lower abutment body 200 and the pipeline, which causes a large vertical force on the soil layer, resulting in the settlement of the soil layer and finally the deviation of the pipeline position.

[0046] In some embodiments, such as Figure 1 , Figure 3 and Figure 5 shown, a plurality of triangular prisms 211 are provided on the lower side surface of the support platform 210. The plurality of triangular prisms 211 are arranged at intervals on the lower side surface of the support platform 210. Specifically, one side surface of the triangular prism 211 is parallel and fitted to the surface of the support platform 210, and the other two side surfaces of the triangular prism 211 are inclined parallel to the support platform 210. Among them, the triangular prism 211 can be a right triangular prism 211, an isosceles triangular prism 211, or an equilateral triangular prism 211. In this embodiment, the triangular prism 211 is an equilateral triangular prism 211, that is, the cross-section of the triangular prism 211 is an equilateral triangle.

[0047] Among them, the three edges of the triangular prism 211 are all parallel to the two side surfaces of the lower pier body 200, so that the contact area between the lower pier body 200 and the soil is increased through the triangular prism 211, and the acting force of the pier on the soil is dispersed into acting forces in the horizontal and vertical directions through the inclined surface of the triangular prism 211. Furthermore, the acting force in the vertical direction on the soil is reduced, thereby avoiding the settlement of the soil layer and making the support effect of the pier on the pipeline better.

[0048] In some embodiments, such as Figure 1 and Figure 5 shown, the number of the support platforms 210 is multiple, and the multiple support platforms 210 are arranged at intervals in the vertical direction on the two side surfaces of the lower pier body 200. Specifically, the multiple support platforms 210 are arranged at intervals in the vertical direction on the surfaces of the two side walls of the lower pier body 200, so that the contact area between the pier and the soil is larger through the support platforms 210, and further the support of the lower pier body 200 to the upper pier body 100 is more stable, thereby making the support of the pier to the pipeline more stable.

[0049] In some embodiments, such as Figure 1 and Figure 4 shown, the lower pier body 200 has a groove 220. The notch of the groove 220 faces the upper pier body 100. The groove 220 is arranged below the upper pier body 100, and the surface of the upper side wall of the lower pier body 200 is fitted to the surface of the lower side wall of the upper pier body 100, so that the mass of the lower pier body 200 is lighter, and further the acting force on the soil layer is lower, thereby avoiding the settlement of the soil layer under a large acting force. At the same time, the manufacturing cost of the lower pier body 200 is also reduced.

[0050] In this embodiment, the cavity of the lower pier body 200 can be backfilled with materials such as sand, gravel or soil to support the lower surface of the upper pier body 100. It can be set according to the actual situation on site and the wall thickness on both sides of the lower pier body 200. If the wall thickness on both sides of the lower pier body 200 is thicker and can meet the requirements of stable support for the upper pier body 100, it is not necessary to backfill with materials such as sand, gravel or soil.

[0051] In some embodiments, Figure 1 and Figure 3 As shown, a second arc surface 230 is provided on the side of the lower pier body 200 facing away from the upper pier body 100, and the second arc surface 230 is oriented in the same direction as the first arc surface 110, so that the contact area between the lower pier body 200 and the soil is larger, and the force direction of the soil is changed from vertically downward to being subjected to forces in multiple directions. Since the masses of the piers and the pipelines are constant, the force acting on the soil is stable, so that the force acting on the soil in the vertical direction per unit volume is relatively low, thereby making the soil support the lower pier body 200 stable, thereby making the position of the piers stable, and thereby making the piers support the pipeline stably.

[0052] In some embodiments, Figure 1 , Figure 3 and Figure 5 As shown, a plurality of support columns 240 are provided on the surface of the second arc surface 230, and the plurality of support columns 240 are arranged in sequence and spaced apart along the surface of the second arc surface 230, wherein the diameter of the support column 240 increases successively from the end where the support column 240 is connected to the second arc surface 230 to the end away from the second arc surface 230, and the plurality of support columns 240 are all perpendicular to the tangent direction of the contact position of the second arc, so that the plurality of support columns 240 support the lower pier body 200.

[0053] Among them, the support column 240 squeezes the soil in the soil layer, making the soil layer compact and thus having a higher density, thereby reducing the probability of the soil layer settling. At the same time, the support column 240 supports the lower pier body 200, thereby stabilizing the positions of the lower pier body 200 and the upper pier body 100, thereby stabilizing the position of the pipeline.

[0054] In this embodiment, Figure 1 As shown, the support column 240 has an inner cavity 241, so that while the support column 240 supports the lower pier body 200, the mass of the support column 240 is relatively light, thereby reducing the force exerted on the soil.

[0055] In some embodiments, Figure 1 , Figure 2 , Figure 4 and Figure 6As shown, the abutment also includes a plurality of fixing bars 300. A plurality of slots 250 are provided on the upper surfaces of two opposite side walls of the lower pier body 200. Through holes 120 are provided in the vertical direction on both side walls of the upper pier body 100. When the upper pier body 100 is arranged on the upper side of the lower pier body 200, a plurality of through holes 120 are aligned with a plurality of slots 250, and a plurality of fixing bars 300 respectively pass through the plurality of through holes 120 and are inserted into the plurality of slots 250, so that the connection between the upper pier body 100 and the lower pier body 200 is stable, and further the position of the upper pier body 100 is stable.

[0056] In this embodiment, after the lower pier body 200 is poured, a plurality of slots 250 are reserved on the upper surfaces of both side walls of the lower pier body 200, and the plurality of slots 250 are arranged at intervals in the axial direction of the first arc surface. At the same time, the pre-poured upper pier body 100 is placed on the upper side of the lower pier body 200, and a plurality of through holes 120 of the upper pier body 100 are respectively aligned with a plurality of slots 250 of the lower pier body 200, so that the fixing bars 300 are inserted into the slots 250 along the through holes 120. At this time, if the positions of the through holes 120 of the upper pier body 100 or the slots 250 of the lower pier body 200 are deviated, the fixing bars 300 cannot be inserted into the slots 250 through the through holes 120, resulting in the upper pier body 100 and the lower pier body 200 being unable to complete the mating installation. The upper pier body 100 can be lifted and marked on the lower pier body 200, so as to re-open the slots 250 on the upper surfaces of both side walls of the lower pier body 200. After that, the upper pier body 100 is placed on the upper side of the lower pier body 200, and the fixing bars 300 are inserted into the corresponding through holes 120 and slots 250, and then the through holes 120 and slots 250 are concreted, so that the fixing bars 300 are fixed, and further the connection between the upper pier body 100 and the lower pier body 200 is stable.

[0057] Among them, the diameters of the through holes 120 and the slots 250 are both larger than that of the fixing bars 300.

[0058] In some embodiments, as Figure 1 and Figure 2 shown, a plurality of longitudinal friction pads 130 are provided on the surface of the first arc surface 110. The plurality of longitudinal friction pads 130 are arranged at intervals in the circumferential direction of the first arc surface 110, and the plurality of longitudinal friction pads 130 all extend along the axial direction of the first arc surface 110. Moreover, a plurality of transverse friction pads 140 are provided between two adjacent longitudinal friction pads 130, and the plurality of transverse friction pads 140 arranged between two adjacent longitudinal friction pads 130 are arranged at intervals in the axial direction of the first arc surface 110, and the plurality of transverse friction pads 140 all extend along the circumferential direction of the surface of the first arc surface 110. Among them, the surfaces of the transverse friction pads 140 and the longitudinal friction pads 130 facing away from the first arc surface 110 are all adapted to the outer wall of the pipeline, so as to increase the friction between the pipeline and the abutment longitudinally and transversely, and further prevent the position of the pipeline on the abutment from being stable.

[0059] Among them, the longitudinal friction pad 130 and the transverse friction pad 140 can be made of rubber or other materials with relatively large surface friction. In this embodiment, since rubber is a polymer material and the deformation range of rubber is relatively large, both the longitudinal friction pad 130 and the transverse friction pad 140 are made of rubber. Thus, when the pipe is placed on the transverse friction pad 140 and the longitudinal friction pad 130, the transverse friction pad 140 and the longitudinal friction pad 130 can be extruded, so that the surfaces of the transverse friction pad 140 and the longitudinal friction pad 130 are in the same circular arc surface as the first arc surface 110, and the transverse friction pad 140 and the longitudinal friction pad 130 are in contact with the pipe. Furthermore, the friction force exerted on the pipe by the transverse friction pad 140 and the longitudinal friction pad 130 is relatively large, thereby making the position of the pipe stable.

[0060] In this embodiment, the surfaces of the transverse friction pad 140 and the longitudinal friction pad 130 are located on the side of the first arc surface 110 facing the pipe, and the distance between the surfaces of the transverse friction pad 140 and the longitudinal friction pad 130 and the first arc surface 110 is relatively small, so as to avoid the situation where when the pipe squeezes the surfaces of the transverse friction pad 140 and the longitudinal friction pad 130, the transverse friction pad 140 and the longitudinal friction pad 130 cannot undergo large deformation, resulting in the outer wall of the pipe not being able to contact the first arc surface 110.

Claims

1. A pier for concrete encapsulation of large-diameter ductile iron pipes, arranged on the ground to support the pipes, characterized in that: include: An upper pier body (100) is arranged on the ground, and the upper pier body (100) has a first arc surface (110) adapted to the pipeline; and The lower pier body (200) is supported on the lower surface of the upper pier body (100), and both side wall surfaces of the lower pier body (200) are provided with support platforms (210), and the support platforms (210) are perpendicular to the side surfaces of the lower pier body (200).

2. The buttress according to claim 1, characterized in that: A plurality of triangular prisms (211) are provided on the lower surface of the support platform (210), and the plurality of triangular prisms (211) are sequentially and spaced apart from each other on the lower surface of the support platform (210).

3. The buttress according to claim 2, characterized in that: The three edges of the triangular prism (211) are parallel to the two side surfaces of the lower pier body (200).

4. The buttress according to claim 3, characterized in that: There are a plurality of support platforms (210), and the plurality of support platforms (210) are sequentially and spaced apart along the vertical direction on the surfaces of both sides of the lower pier body (200).

5. The buttress according to claim 1, characterized in that: The lower pier body (200) has a groove (220), the notch of the groove (220) faces the upper pier body (100), the groove (220) is arranged on the lower side of the upper pier body (100), and the surface of the upper side wall of the lower pier body (200) is in contact with the surface of the lower side wall of the upper pier body (100).

6. The buttress according to claim 1, characterized in that: A second arc surface (230) is provided on the side of the lower pier body (200) facing away from the upper pier body (100), and the second arc surface (230) is oriented in the same direction as the first arc surface (110).

7. The buttress according to claim 6, characterized in that: The surface of the second arc surface (230) is provided with a plurality of support columns (240), and the plurality of support columns (240) are sequentially spaced apart along the surface of the second arc surface (230).

8. The buttress according to claim 1, characterized in that: It also includes a plurality of fixing ribs (300), the upper surfaces of the two opposite side walls of the lower pier body (200) are each provided with a plurality of slots (250), and the two side walls of the upper pier body (100) are provided with through holes (120) along the vertical direction, and when the upper pier body (100) is arranged on the upper side of the lower pier body (200), the plurality of through holes (120) are aligned with the plurality of slots (250), and the plurality of fixing ribs (300) respectively pass through the plurality of through holes (120) and are inserted into the plurality of slots (250).

9. The buttress according to claim 1, characterized in that: A plurality of longitudinal friction pads (130) are provided on the surface of the first arc surface (110), and the plurality of longitudinal friction pads (130) are sequentially spaced apart along the circumference of the first arc surface (110).

10. The buttress according to claim 9, characterized in that: A plurality of transverse friction pads (140) are provided between two adjacent longitudinal friction pads (130), and the plurality of transverse friction pads (140) are arranged in sequence and spaced apart along the axial direction of the first arc surface (110), and the surfaces of the transverse friction pads (140) and the longitudinal friction pads (130) are both adapted to the outer wall of the pipeline.

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