A kind of drainage pipe structure and installation method of bridge in aeolian sand gully area

Abstract

The present invention discloses a drainage pipe structure for bridges in aeolian sand gully areas, including a vertical main pipe, a grate assembly, a trunk branch pipe, and a plurality of water outlets; the installation method includes the following steps: installing the vertical main pipe in a hole reserved in a bridge body; inserting a grate frame into the upper end of the vertical main pipe; placing a grate plate into the grate frame; welding the branch pipe to the vertical main pipe; and welding the water outlet to the branch pipe. The present invention can effectively guide rainwater on bridges in aeolian sand areas and then disperse and discharge it, weaken the impact force of rainwater during drainage, reduce the scouring force of water flow on aeolian sand, stabilize the bearing capacity of the foundation, protect the bridge foundation, and quickly discharge water from the bridge surface; at the same time, the installation method of the present invention can reduce the difficulty of installation, improve the installation accuracy, and extend the service life of the product.

Description

Technical Field

[0001] The invention relates to the field of bridges, and in particular to a drainage pipe structure and an installation method for a bridge in a wind-blown sand gully area. Background Art

[0002] On rainy days, rainwater on the bridge deck needs to be quickly drained, usually by setting up drainage pipes on the bridge deck. In the aeolian sand area, the lower part of the bridge is aeolian sand, which is relatively soft. The rainwater directly discharged by a single drainage pipe is in large strands. This form of rainwater will wash out large sinkholes on the aeolian sand ground, which will reduce the bearing capacity of the ground foundation; at the same time, the water flow formed by the discharged rainwater will also erode the aeolian sand of the bridge foundation, exposing the bridge foundation and even causing the abutment to sink. At the same time, conventional drainage pipes cannot quickly drain the water on the bridge surface from the bridge deck after the water accumulates on the bridge surface, which is easy to cause driving safety hazards. Summary of the invention

[0003] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a drainage pipe structure for bridges in aeolian sand gully areas, which can effectively guide the rainwater on bridges in aeolian sand areas and then disperse and discharge it, weaken the impact force of rainwater discharge, reduce the scouring force of water flow on aeolian sand, stabilize the bearing capacity of the foundation, protect the bridge foundation, and quickly drain the water on the bridge surface. At the same time, the installation method of the present invention can reduce the difficulty of installation, improve the installation accuracy, and extend the service life of the product.

[0004] The objective of the present invention is achieved through such technical solution:

[0005] A water discharge pipe structure for a bridge in a gully area of ​​aeolian sand, comprising:

[0006] A vertical main pipe is vertically installed on the bridge body, and the upper end of the vertical main pipe is in a neck shape;

[0007] A grate assembly is arranged at the inlet end of the vertical main pipe; the grate assembly comprises:

[0008] A grate frame is arranged in the vertical main pipe, and an outer side surface is provided with an inclined surface matching the inner wall of the vertical main pipe; an inner side of the upper part of the grate frame is provided with an outward extension; an inner side of the lower part of the grate frame is provided with an outer convex ring; a gap is left between the outer side surface of the grate frame and the inner wall of the vertical main pipe;

[0009] A grate plate with an overlapped portion, wherein the grate plate is overlapped on the overhanging portion through the overlapped portion to close the opening of the grate frame; after the grate plate is rotated by a given angle, the overlapped portion is separated from the overhanging portion, and the grate frame slides to the lower part of the grate frame under the action of gravity; in the vertical projection direction, the outer convex ring interferes with the overlapped portion of the grate plate;

[0010] A plurality of branch pipes are arranged in a circle around the vertical main pipe and are inclined; the higher ends of the branch pipes are connected to the vertical main pipe;

[0011] The branch pipe is provided with a plurality of water outlet heads, one end of the water outlet head is communicated with the branch pipe, and the other end is provided with a plurality of through holes.

[0012] Furthermore, the water outlet head comprises:

[0013] A connecting pipe is connected to the branch pipe; the connecting pipe is vertically arranged; the outer circumferential surface of the lower end of the connecting pipe is provided with an external thread;

[0014] The outer contour of the water-sprinkling head is an inverted funnel shape; the inner surface of the smaller end of the water-sprinkling head is provided with an internal thread, and the larger end is provided with a sealing plate; the sealing plate is provided with a plurality of perforations, and the directions of the plurality of perforations are scattering directions outward from a point directly above the center of the sealing plate.

[0015] Furthermore, it also includes a cross bar frame, the ends of which are respectively connected to the ends of the branch pipes.

[0016] Furthermore, the end of the crossbar frame is connected to the branch pipe through a connecting block.

[0017] Furthermore, an annular protrusion is provided on the inner wall of the end of the vertical main pipe;

[0018] It also includes a flow guide, which is arranged in the vertical main pipe and contacts the annular protrusion; the flow guide includes:

[0019] The central plate is rectangular;

[0020] There are four dispersion plates, one end of each dispersion plate is connected to an end face of the central plate; one end face of each dispersion plate abuts against the inner wall of the vertical main pipe and contacts the annular protrusion; squeezing and relaxing the four dispersion plates changes the outer contour dimensions of the four dispersion plates.

[0021] Furthermore, the end of a portion of the upper surface of the dispersion plate is flush with the inner wall of the branch pipe.

[0022] Furthermore, the outwardly extending portion is a plurality of inner convex edges that are convex inwardly and form a circular array around the center of the grate frame, and the inner convex edges are fan-shaped; the overlapping portion is a plurality of outer convex edges that are convex outwardly and form a circular array around the center of the grate plate, and the outer convex edges are fan-shaped.

[0023] Furthermore, a spherical groove is provided on the inner convex edge; a spherical protrusion is provided on the outer convex edge; and the spherical protrusion is located in the spherical groove.

[0024] Furthermore, an insert pipe is horizontally provided on the upper surface of the grate plate.

[0025] A method for installing a drainage pipe structure for a bridge in a gully area of ​​aeolian sand, comprising the following steps:

[0026] A notch is provided on the vertical main pipe to communicate with the branch pipe;

[0027] Install the vertical main pipe in the hole reserved in the bridge body;

[0028] Insert the deflector into the vertical main pipe;

[0029] Insert the grate frame into the upper end of the vertical main pipe;

[0030] Place the grate plate into the grate frame so that the outer convex edge of the grate plate overlaps the inner convex edge of the grate frame and the spherical protrusion is located in the spherical groove;

[0031] Open a notch on the branch pipe;

[0032] Weld the branch pipe to the vertical main pipe;

[0033] Weld the connecting pipe to the branch pipe;

[0034] Install the sprinkler head on the connecting pipe;

[0035] Weld the crossbar frame and branch pipe together.

[0036] Due to the adoption of the above technical solution, the present invention has the following advantages:

[0037] The vertical pipes, branch pipes and water outlets disperse the rainwater discharge locations, so that the rainwater is no longer concentrated and discharged in strands, weakening the impact of rainwater discharge, reducing the scouring force of water flow on wind-blown sand, stabilizing the bearing capacity of the foundation, and protecting the bridge foundation. At the same time, the installation method of the present invention can reduce the installation difficulty, improve the installation accuracy, and extend the service life of the product.

[0038] Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings of the present invention are as follows:

[0040] Figure 1 The present invention is a schematic cross-sectional structural diagram of a drainage pipe structure for a bridge in a gully area of ​​aeolian sand.

[0041] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0042] Figure 3 for Figure 2 Schematic diagram of the structure at the middle BB section.

[0043] Figure 4 for Figure 1 Schematic diagram of the enlarged structure at point C in the middle.

[0044] Figure 5 for Figure 4 Schematic diagram of the structure at the middle DD section.

[0045] Figure 6 for Figure 4 Schematic diagram of the structure at the EE section.

[0046] Figure 7 for Figure 4 Schematic diagram of the structure of the FF section.

[0047] Figure 8 for Figure 4 Schematic diagram of the enlarged structure at G in the middle.

[0048] Fig. 9 for Figure 4 Schematic diagram of the enlarged structure at H in the middle.

[0049] Fig.10 for Figure 1 Schematic diagram of the enlarged structure at J in the middle.

[0050] In the figure: 1. bridge body; 2. vertical main pipe; 21. annular protrusion; 31. grate frame; 311. inner convex edge; 3111. spherical groove; 32. grate plate; 321. outer convex edge; 3211. spherical protrusion; 33. outer convex ring; 4. branch pipe; 5. water outlet; 51. connecting pipe; 52. water diffuser; 521. sealing plate; 5211. perforation; 6. cross bar frame; 7. connecting block; 81. central plate; 82. dispersion plate; 9. intubation. DETAILED DESCRIPTION

[0051] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0052] Example:

[0053] like Figures 1 to 10 As shown, a drainage pipe structure for a bridge in a gully area with aeolian sand is

[0054] The vertical main pipe 2 is vertically installed on the bridge body 1, and the upper end of the vertical main pipe 2 is in a neck shape;

[0055] The grate assembly is arranged at the inlet end of the vertical main pipe 2; the grate assembly includes:

[0056] The grate frame 31 is arranged in the vertical main pipe 2, and the outer side surface is provided with an inclined surface matching the inner wall of the vertical main pipe 2; the inner side of the upper part of the grate frame 31 is provided with an overhanging part; the inner side of the lower part of the grate frame 31 is provided with an outer convex ring 33; a gap is left between the outer side surface of the grate frame 31 and the inner wall of the vertical main pipe 2;

[0057] A grate plate 32 with an overlapped portion, the grate plate 32 overlaps the overhanging portion through the overlapped portion, and closes the opening of the grate frame 31; after the grate plate 32 rotates by a given angle, the overlapped portion is separated from the overhanging portion, and the grate frame 31 slides to the lower part of the grate frame 31 under the action of gravity; in the vertical projection direction, the outer convex ring 33 interferes with the overlapped portion of the grate plate 32;

[0058] Two branch pipes 4 are arranged in a circle around the vertical main pipe 2 and are inclined; the higher end of the branch pipe 4 is connected to the vertical main pipe 2; the angle between the two branch pipes 4 is 120 degrees;

[0059] Three water outlet heads 5 are provided on the branch pipe 4 ; one end of the three water outlet heads 5 is connected to the branch pipe 4 , and the other end is provided with a plurality of through holes 5211 .

[0060] The rainwater discharge locations are dispersed through vertical pipes, branch pipes 4 and water outlets 5, so that the rainwater is no longer discharged in concentrated streams, thereby weakening the impact force of rainwater discharge, reducing the scouring force of water flow on wind-blown sand, stabilizing the bearing capacity of the foundation, and protecting the bridge foundation.

[0061] Specifically, in order to ensure timely drainage of rainwater during heavy rain, completely closed filter panels or dispersion panels 82 may not be provided at the ends of the vertical main pipe 2 and the branch pipe 4, to ensure that rainwater can be quickly drained and does not accumulate on the bridge deck.

[0062] The grate frame 31 is installed at the pipe opening of the vertical main pipe 2 in a snap-fitting manner, and the grate plate 32 is arranged on the grate frame 31 in an overlapping manner. Rainwater needs to pass through the grate before being discharged.

[0063] When the rainfall is heavy or the grate plate 32 is seriously blocked, rainwater accumulates on the bridge deck. At this time, directly lifting the grate plate 32 to fully open the vertical pipe opening requires a lot of force (water pressure), and a corresponding lifting part is also required to be provided on the grate plate 32. However, by adopting the present solution, only the grate plate 32 needs to be rotated, and the grate plate 32 will no longer filter the rainwater after it falls, and the rainwater can smoothly enter the vertical main pipe 2 through the grate frame 31.

[0064] At the same time, the falling grate plate 32 is caught by the outer convex ring 33, and the grate can be taken out and installed after the rainwater drainage is completed.

[0065] In this embodiment, the water outlet 5 includes:

[0066] The connecting pipe 51 is connected to the branch pipe 4; the connecting pipe 51 is vertically arranged; the outer circumferential surface of the lower end of the connecting pipe 51 is provided with an external thread;

[0067] The outer contour of the water-sprinkling head 52 is an inverted funnel shape; the inner surface of the smaller end of the water-sprinkling head 52 is provided with an internal thread, and the larger end is provided with a sealing plate 521; the sealing plate 521 is provided with a plurality of through holes 5211, and the direction of the plurality of through holes 5211 is a scattering direction outward from a point directly above the center of the sealing plate 521.

[0068] The rainwater in the branch pipe 4 enters the water spray head 52 through the connecting pipe 51, and then disperses and discharges through the perforations 5211 on the water spray head 52; the perforations 5211 are arranged in a scattered direction, so that the rainwater is dispersed in the air, forming water mist or water droplets in the air, weakening the impact of the water flow, and the rainwater is not easy to gather into a water flow to flush the wind-blown sand ground. Specifically, the corresponding water spray head 52 can be replaced according to the road section conditions or the water spray head 52 is not installed directly.

[0069] In this embodiment, a cross bar frame 6 is also included, and the ends of the cross bar frame 6 are respectively connected to the ends of each branch pipe 4.

[0070] The water flows in the branch pipe 4, which requires a high strength of the connection between the branch pipe 4 and the vertical main pipe 2. By providing the cross bar frame 6, the stress on the connection part can be improved, making the overall structure more stable.

[0071] In this embodiment, the end of the cross bar frame 6 is connected to the branch pipe 4 through a connecting block 7 .

[0072] The connecting block 7 is used to increase the structural strength of the crossbar frame 6, the branch pipe 4 and the connecting pipe 51.

[0073] In this example, an annular protrusion 21 is provided on the inner wall of the end of the vertical main pipe 2;

[0074] It also includes a flow guide, which is arranged in the vertical main pipe 2 and contacts the annular protrusion 21; the flow guide includes:

[0075] The central plate 81 is rectangular;

[0076] Four dispersion plates 82, one end of each dispersion plate 82 is connected to one end face of the central plate 81; one end face of each dispersion plate 82 abuts against the inner wall of the vertical main pipe 2 and contacts the annular protrusion 21; squeezing and relaxing the four dispersion plates 82 changes the outer contour size of the four dispersion plates 82. The dispersion sheet can be made of plastic material to ensure elasticity and durability.

[0077] In the case of less rainfall, most of the rainwater is discharged through the vertical main pipe 2, and the rainwater is not fully dispersed. The deflector diverts part of the rainwater entering the vertical main pipe 2 into the branch pipe 4, disperses the rainwater, and also removes part of the impact force of the water flow in the vertical main pipe 2, reducing the impact force of the discharged rainwater.

[0078] During specific use, the deflector is inserted from the lower part of the vertical main pipe 2, and the ends of the four dispersion sheets are pressed against the annular protrusion 21 and forced to close, and an elastic force is formed between the dispersion sheets and the central plate 81. The deflector is continued to be inserted. When the ends of the dispersion sheets pass over the annular protrusion 21, the dispersion sheets spread out, and the installation of the deflector is now completed.

[0079] In this embodiment, the end of a portion of the upper surface of the dispersion plate 82 is flush with the inner wall of the branch pipe 4 .

[0080] The plate surface of the dispersion plate 82 is a plane, and the connecting portion between the branch pipe 4 and the vertical main pipe 2 is an arc surface, so only a part of the upper surface of the dispersion plate 82 is flush with the inner wall of the branch pipe 4. Rainwater will quickly enter the branch pipe 4 through the flush area; at the same time, the sharp angle formed by the other areas of the dispersion plate 82 and the inner wall of the vertical main pipe 2 can reduce the flow rate of rainwater.

[0081] In this embodiment, the extending portion is a plurality of inner convex edges 311 that protrude inwardly in a circular array around the center of the grate frame 31, and the inner convex edges 311 are fan-shaped; the overlapping portion is a plurality of outer convex edges 321 that protrude outwardly in a circular array around the center of the grate plate 32, and the outer convex edges 321 are fan-shaped.

[0082] The grate plate 32 and the grate frame 31 are installed in a staggered overlapping manner, which can not only ensure the stability of the structure, but also achieve the purpose of fully opening the vertical main pipe 2 after the grate plate 32 is rotated.

[0083] In this embodiment, a spherical groove 3111 is provided on the inner convex edge 311 ; a spherical protrusion 3211 is provided on the outer convex edge 321 ; and the spherical protrusion 3211 is located in the spherical groove 3111 .

[0084] When the grate plate 32 is in normal use, it needs to be overlapped and fixed with the grate frame 31; the spherical groove 3111 and the spherical protrusion 3211 can prevent the grate plate 32 from rotating abnormally to a certain extent.

[0085] In this embodiment, an insert pipe 9 is horizontally provided on the upper surface of the grate plate 32 .

[0086] After the rainwater accumulates to a certain depth, in order to facilitate the transfer to the grate plate 32, an insertion pipe 9 is provided, and at this time, the grate plate 32 only needs to be rotated manually using a rod insertion tool.

[0087] A method for installing a drainage pipe structure for a bridge in a gully area of ​​aeolian sand, comprising the following steps:

[0088] According to the number, diameter and inclination angle of the branch pipes 4, a notch is opened on the vertical main pipe 2; the vertical main pipe 2 is installed in the hole reserved in the bridge body 1; the deflector is inserted from the lower part of the vertical main pipe 2, and the ends of the four dispersion sheets are forced to close against the annular protrusion 21, and an elastic force is formed between the dispersion sheets and the central plate 81, and the deflector is continued to be inserted. When the ends of the dispersion sheets pass over the annular protrusion 21, the dispersion sheets spread out, and the installation of the deflector is completed at this time; according to the number and diameter of the connecting pipes 51 installed on each branch pipe 4, a notch is opened on the branch pipe 4. Open a gap; weld the connecting pipe 51 to the branch pipe 4 in sequence; install the water diffusers 52 one by one on the connecting pipe 51; weld the branch pipe 4 to the vertical main pipe 2; weld the crossbar frame 6 to each branch pipe 4; weld the crossbar frame 6 to the branch pipe 4; insert the grate frame 31 into the upper end of the vertical main pipe 2; place the grate plate 32 into the grate frame 31, so that the outer convex edge 321 of the grate plate 32 overlaps the inner convex edge 311 of the grate frame 31, and the spherical protrusion 3211 is located in the spherical groove 3111. The specific installation sequence can be adjusted according to actual conditions.

[0089] The present invention works as follows: rainwater flows from the bridge deck to the vertical main pipe 2 , enters the grate frame 31 through the grate plate 32 , and then enters the vertical main pipe 2 through the gap between the grate frame 31 and the vertical main pipe 2 .

[0090] Rainwater falls vertically under the action of gravity, part of the rainwater hits the central plate 81 and the dispersion plate 82 and is forced into the branch pipe 4, and the remaining rainwater passes through the deflector and is discharged from the end of the vertical main pipe 2.

[0091] The rainwater entering the branch pipe 4 flows along the branch pipe 4, dispersedly enters each water outlet head 5, and then is discharged through the perforations 5211 of the water outlet head 5. If some rainwater has not been discharged, it will continue to flow along the branch pipe 4 and finally be discharged from the end of the branch pipe 4.

[0092] When the amount of rainwater is large and the grate plate 32 cannot quickly drain the rainwater into the vertical main pipe 2, the grate plate 32 is rotated 45 degrees using a rod insertion tool, and the outer convex edge 321 of the grate plate 32 is separated from the inner convex edge 311 of the grate frame 31. The grate plate 32 falls under the action of gravity and water flow. At this time, the opening of the grate frame 31 is completely open, and the rainwater can smoothly enter the vertical main pipe 2; at the same time, the grate plate 32 is caught by the outer convex ring 33 of the grate frame 31. After the rainwater is drained, the grate plate 32 can be taken out and installed again.

[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A drainage pipe structure for a bridge in a gully area of ​​aeolian sand, characterized in that: include, A vertical main pipe is vertically installed on the bridge body, and the upper end of the vertical main pipe is in a neck shape; A grate assembly is arranged at the inlet end of the vertical main pipe; the grate assembly comprises: A grate frame is arranged in the vertical main pipe, and an outer side surface is provided with an inclined surface matching the inner wall of the vertical main pipe; an inner side of the upper part of the grate frame is provided with an outward extension; an inner side of the lower part of the grate frame is provided with an outer convex ring; a gap is left between the outer side surface of the grate frame and the inner wall of the vertical main pipe; A grate plate with an overlapped portion, wherein the grate plate is overlapped on the overhanging portion through the overlapped portion to close the opening of the grate frame; after the grate plate is rotated by a given angle, the overlapped portion is separated from the overhanging portion, and the grate frame slides to the lower part of the grate frame under the action of gravity; in the vertical projection direction, the outer convex ring interferes with the overlapped portion of the grate plate; A plurality of branch pipes are arranged in a circle around the vertical main pipe and are inclined; the higher ends of the branch pipes are connected to the vertical main pipe; The branch pipe is provided with a plurality of water outlets, one end of the water outlet is connected to the branch pipe, and the other end is provided with a plurality of perforations; The water outlet head comprises: A connecting pipe is connected to the branch pipe; the connecting pipe is vertically arranged; an outer circumferential surface of the lower end of the connecting pipe is provided with an external thread; The water-sprinkling head has an outer contour of an inverted funnel; the inner surface of the smaller end of the water-sprinkling head is provided with an internal thread, and the larger end is provided with a sealing plate; the sealing plate is provided with a plurality of perforations, and the directions of the plurality of perforations are scattering directions outward from a point directly above the center of the sealing plate; The inner wall of the end of the vertical main pipe is provided with an annular protrusion; It also includes a flow guide, which is arranged in the vertical main pipe and contacts the annular protrusion; the flow guide includes: The central plate is rectangular; There are four dispersion plates, one end of each dispersion plate is connected to an end face of the central plate; one end face of each dispersion plate abuts against the inner wall of the vertical main pipe and contacts the annular protrusion; squeezing and relaxing the four dispersion plates changes the outer contour dimensions of the four dispersion plates.

2. The drainage pipe structure for bridges in aeolian sand gully areas according to claim 1 is characterized in that: It also includes a cross bar frame, the ends of which are respectively connected to the ends of the branch pipes.

3. The drainage pipe structure for bridges in aeolian sand gully areas according to claim 2 is characterized in that: The end of the crossbar frame is connected to the branch pipe through a connecting block.

4. The drainage pipe structure for bridges in aeolian sand gully areas according to claim 1 is characterized in that: The end of a portion of the upper surface of the dispersion plate is flush with the inner wall of the branch pipe.

5. The drainage pipe structure for bridges in aeolian sand gully areas according to claim 1 is characterized in that: The outwardly extending portion is a plurality of inner convex edges which are arranged in a circular array around the center of the grate frame and are in a fan shape; the overlapping portion is a plurality of outer convex edges which are arranged in a circular array around the center of the grate plate and are in a fan shape.

6. The drainage pipe structure for bridges in aeolian sand gully areas according to claim 5, characterized in that: A spherical groove is provided on the inner convex edge; a spherical protrusion is provided on the outer convex edge; and the spherical protrusion is located in the spherical groove.

7. The drainage pipe structure for bridges in aeolian sand gully areas according to claim 5 or 6, characterized in that: The upper surface of the grate plate is horizontally provided with an insert pipe.

8. The method for installing a drainage pipe structure for a bridge in a gully area of ​​aeolian sand according to claim 1, characterized in that: The following steps are included: A notch is provided on the vertical main pipe to communicate with the branch pipe; Install the vertical main pipe in the hole reserved in the bridge body; Insert the deflector into the vertical main pipe; Insert the grate frame into the upper end of the vertical main pipe; Place the grate plate into the grate frame so that the outer convex edge of the grate plate overlaps the inner convex edge of the grate frame and the spherical protrusion is located in the spherical groove; Open a notch on the branch pipe; Weld the branch pipe to the vertical main pipe; Weld the connecting pipe to the branch pipe; Install the sprinkler head on the connecting pipe; Weld the crossbar frame and branch pipe together.

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