Water drain pipe

Abstract

The utility model provides a water drain pipe, which belongs to the technical field of highway bridge engineering and is used for being mounted on a bridge body, a cement layer and an asphalt layer are sequentially laid on the top surface of the bridge body, and the water drain pipe comprises an embedded section, an inlet section, a grate water section, an outlet section and a drainage main body section. The pre-buried section is used for being pre-buried in the bridge body when the bridge body is poured; the inlet section is arranged in the cement layer, and the bottom of the inlet section is in sealed connection with the embedded section; the grate water section is arranged in the asphalt layer, and the bottom of the grate water section is hermetically connected with the inlet section; the outlet section is arranged below the bridge body, and the top of the outlet section is hermetically connected with the embedded section; the drainage body section is arranged below the bridge body, and the top of the drainage body section is in sealed connection with the outlet section. The embedded section is embedded and fixed together with the bridge body when the bridge body is poured, the bridge body does not need to be punched subsequently, the sealing effect between the embedded section and the bridge body is improved, and due to the design of the assembled water drain pipe, the maintenance cost can be reduced, and the maintenance efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of highway bridge engineering, and more specifically, relates to a drain pipe. Background Art

[0002] There are two conventional ways for bridge drain pipes, vertical and horizontal. The vertical drain pipe drainage system is more suitable because of its strong drainage capacity. In order to quickly drain the water on the bridge surface and prevent rainwater from accumulating on the bridge surface and seeping into the beam body, which affects the durability of the bridge, during the bridge design, in addition to setting longitudinal and transverse slopes for drainage, a certain number of drain pipes need to be set on the bridge surface to form a complete drainage system.

[0003] At present, the materials of conventional bridge vertical drain pipes are cast iron or PVC pipes installed as a whole. The installation of the integral drain pipe requires reserved holes during the precast of the beam body, or holes are drilled on the flange of the beam body after the beam body is erected, and then the drain pipe is installed. Finally, the space between the inner wall of the hole and the outer wall of the drain pipe is sealed by pouring concrete.

[0004] The sealing between the inner wall of the reserved hole or the post-drilled hole and the outer surface of the drain pipe increases the construction steps of the drain pipe installation, and the sealing effect is poor. After a long time, water seeps out from the outer wall of the drain pipe, resulting in common diseases such as rust expansion cracking and local spalling of the concrete on the outer side of the edge beam flange and web. Even more seriously, there are problems such as large-area spalling of the concrete protective layer and serious corrosion of the steel bars at the position of the drain pipe. When repairing and replacing the drain pipe, the integral drain pipe needs to be completely removed and reinstalled, resulting in inconvenient maintenance. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a drain pipe to solve the technical problems existing in the prior art that the sealing between the inner wall of the reserved hole or the post-drilled hole and the outer surface of the drain pipe increases the construction steps of the drain pipe installation, and the sealing effect is poor, posing a safety hazard to the bridge. When repairing and replacing the drain pipe, the integral drain pipe needs to be completely removed and reinstalled, resulting in inconvenient maintenance.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: providing a drain pipe for installation on a bridge body, on the top surface of which a cement layer and an asphalt layer are sequentially laid. The drain pipe includes:

[0007] An embedded section for being embedded in the bridge body during the casting of the bridge body;

[0008] An inlet section arranged in the cement layer, and the bottom of the inlet section is hermetically connected to the embedded section;

[0009] A water screening section arranged in the asphalt layer, and the bottom of the water screening section is hermetically connected to the inlet section;

[0010] An outlet section, which is arranged below the bridge body, and the top of the outlet section is hermetically connected to the embedded section; and

[0011] A main drainage section, which is arranged below the bridge body, and the top of the main drainage section is hermetically connected to the outlet section.

[0012] Combined with the first aspect, in a possible implementation, the embedded section includes:

[0013] An embedded pipe, which is embedded in the bridge body, and

[0014] A lower-edge sealing stiffening rib, which is arranged around the bottom end of the outer peripheral surface of the embedded pipe.

[0015] Combined with the first aspect, in a possible implementation, the embedded section further includes:

[0016] An upper-edge stiffening rib, which is arranged around the top end of the outer peripheral surface of the embedded pipe; and

[0017] A middle stiffening rib, which is arranged around the middle part of the outer peripheral surface of the embedded pipe.

[0018] Combined with the first aspect, in a possible implementation, the connection between the embedded section and the inlet section and the connection between the embedded section and the outlet section are both threaded connections.

[0019] Combined with the first aspect, in a possible implementation, the embedded section has internal threads, and the inlet section and the outlet section have external threads.

[0020] Combined with the first aspect, in a possible implementation, the connection between the main drainage section and the outlet section and the connection between the main drainage section and the bridge body are both connected by fixed pipe clamps.

[0021] Combined with the first aspect, in a possible implementation, the main drainage section includes:

[0022] A vertical drain pipe, which is arranged below the bridge body and is hermetically connected to the bottom of the outlet section; and

[0023] A multi-directional elbow connecting pipe, which is arranged below the bridge body and is hermetically connected to the vertical drain pipe.

[0024] The beneficial effects of the drain pipe provided by the utility model are as follows: Compared with the prior art, in the utility model, the embedded section is embedded and fixed together when the bridge body is poured, which not only eliminates the need for subsequent drilling of the bridge body, but also improves the sealing effect between the embedded section and the bridge body. Moreover, the installation of the inlet section is carried out together with the cement layer, and the installation of the water screening section is carried out together with the asphalt layer. The installation of the drain pipe can be completed during the bridge construction process as a whole, shortening the construction period. When it is necessary to repair and replace the drain pipe inside the bridge, the drainage main section can be retained, and the design of the assembled drain pipe can reduce the maintenance cost and improve the maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 is the installation schematic diagram of the drain pipe provided by the embodiment of the present utility model;

[0027] Figure 2 is the structural schematic diagram of the drain pipe provided by the embodiment of the present utility model;

[0028] Figure 3 is the structural schematic diagram during the installation of the embedded section provided by the embodiment of the present utility model;

[0029] Figure 4 is the structural schematic diagram during the repair and replacement of the embedded section provided by the embodiment of the present utility model.

[0030] Among them, the reference numerals in the drawings are as follows:

[0031] 1. Bridge body; 2. Cement layer; 3. Asphalt layer; 4. Embedded section; 41. Embedded pipe; 42. Lower edge sealing stiffener; 43. Upper edge stiffener; 44. Intermediate stiffener; 5. Inlet section; 6. Water screening section; 61. Water screening pipe; 62. Grate; 7. Outlet section; 8. Drainage main section; 81. Vertical drain pipe; 82. Multi-directional elbow connecting pipe; 9. Fixed pipe clamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0033] Now, the drain pipe provided by the present utility model will be described.

[0034] As Figure 1 and Figure 2 shown, the first embodiment of the present utility model provides a drain pipe for being installed on a bridge body 1. A cement layer 2 and an asphalt layer 3 are sequentially laid on the top surface of the bridge body 1. The drain pipe includes a pre-buried section 4, an inlet section 5, a water screening section 6, an outlet section 7 and a drainage main body section 8. The pre-buried section 4 is used to be pre-buried in the bridge body 1 when the bridge body 1 is being poured. The inlet section 5 is arranged in the cement layer 2, and the bottom of the inlet section 5 is hermetically connected to the pre-buried section 4. The water screening section 6 is arranged in the asphalt layer 3, and the bottom of the water screening section 6 is hermetically connected to the inlet section 5. The outlet section 7 is arranged below the bridge body 1, and the top of the outlet section 7 is hermetically connected to the pre-buried section 4. The drainage main body section 8 is arranged below the bridge body 1, and the top of the drainage main body section 8 is hermetically connected to the outlet section 7.

[0035] Specifically, in this embodiment, the pre-buried section 4, the inlet section 5, the water screening section 6, the outlet section 7 and the drainage main body section 8 are all of a circular tubular structure.

[0036] Compared with the prior art, the drain pipe provided in this embodiment pre-buries and fixes the pre-buried section 4 together when the bridge body 1 is being poured, which not only does not require subsequent drilling of the bridge body 1, but also improves the sealing effect between the pre-buried section 4 and the bridge body 1. Moreover, the installation of the inlet section 5 is constructed together with the cement layer 2, and the installation of the water screening section 6 is constructed together with the asphalt layer 3. The installation of the drain pipe can be completed during the bridge construction process as a whole, shortening the construction period. When it is necessary to repair and replace the drain pipe located inside the bridge, the drainage main body section 8 can be retained, and the design of the assembled drain pipe can reduce the maintenance cost and improve the maintenance efficiency.

[0037] As Figure 2 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows:

[0038] The pre-buried section 4 includes a pre-buried pipe 41 and a lower edge sealing stiffening rib 42. The pre-buried pipe 41 is pre-buried in the bridge body 1, and the lower edge sealing stiffening rib 42 is arranged around the bottom end of the outer peripheral surface of the pre-buried pipe 41.

[0039] The arrangement of the lower-edge sealing stiffener 42 can, on the one hand, strengthen the strength of the embedded pipe 41, on the other hand, facilitate the fixation of the embedded section 4 during the precast pouring of the bridge body 1, and can also improve the sealing effect between the bottom of the embedded pipe 41 and the bridge body 1.

[0040] Furthermore, the embedded section 4 further includes an upper-edge stiffener 43 and a middle stiffener 44. The upper-edge stiffener 43 is arranged around the top of the outer peripheral surface of the embedded pipe 41; the middle stiffener 44 is arranged around the middle of the outer peripheral surface of the embedded pipe 41.

[0041] The arrangements of the upper-edge stiffener 43 and the middle stiffener 44 further improve the strength of the embedded pipe 41 and further facilitate the positioning of the embedded section 4 during the precast pouring of the bridge body 1.

[0042] As Figure 2 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows:

[0043] Both between the embedded pipe 41 and the inlet section 5 and between the embedded pipe 41 and the outlet section 7 are threaded connections.

[0044] Furthermore, the embedded pipe 41 has internal threads, and the inlet section 5 and the outlet section 7 have external threads. The top pipe orifice of the inlet section 5 is 1 - 2 cm lower than the upper surface of the cement layer 2.

[0045] The arrangements that both ends of the embedded pipe 41 are respectively in threaded connection with the inlet section 5 and the outlet section 7 can not only ensure the connection strength and sealing performance, but also improve the height adjustment accuracy of the inlet section 5 and the outlet section 7, and improve the stability during the subsequent installation of pipe sections.

[0046] The arrangement that the embedded pipe 41 has internal threads can prevent the precast pouring of the bridge body 1 from affecting the threads and is convenient for the screwed connection of the inlet section 5 and the outlet section 7.

[0047] As Figures 1 to 2 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows:

[0048] Both between the drainage main body section 8 and the outlet section 7 and between the drainage main body section 8 and the bridge body 1 are connected by fixed pipe clamps 9, which improves the installation strength and stability of the drainage main body section 8.

[0049] As Figures 1 to 2 shown, a specific embodiment provided by the present utility model on the basis of the first embodiment is as follows:

[0050] The main drainage section 8 includes a vertical drain pipe 81 and a multi-directional elbow connecting pipe 82. The vertical drain pipe 81 is arranged below the bridge body 1 and is hermetically connected to the bottom of the outlet section 7; the multi-directional elbow connecting pipe 82 is arranged below the bridge body 1 and is hermetically connected to the vertical drain pipe 81, improving the drainage efficiency of the drainage system.

[0051] As Figure 2 shown, a specific implementation manner provided by the present utility model on the basis of the first implementation manner is as follows:

[0052] The water grating section 6 includes a water grating pipe 61 and a grating 62. The bottom of the water grating pipe 61 is hermetically connected to the top of the inlet section 5, and the grating 62 is fixed to the top of the water grating pipe 61.

[0053] Further, in this embodiment, the orifice of the water grating pipe 61 is 1-2 cm lower than the upper surface of the asphalt layer 3. An annular water sealing glue is arranged between the bottom of the water grating pipe 61 and the top of the inlet pipe, and the grating 62 is fixed at the orifice of the water grating pipe 61 through an adhesive glue, with high construction efficiency and good sealing effect between the water grating pipe 61 and the inlet section 5.

[0054] As Figures 1 to 3 shown, the second implementation manner of the present utility model provides an installation method for a drain pipe, including the following steps:

[0055] A. Beam prefabrication stage: Place the embedded section 4 at the designated internal position during the casting of the bridge body 1, and position it in cooperation with the lower edge sealing stiffener 42, upper edge stiffener 43, and middle stiffener 44 fixed on the embedded section 4 through the steel bars during the prefabrication of the bridge body 1. When the bridge body 1 is cast and formed, connect and fix the embedded section 4;

[0056] B. Bridge deck cement paving stage: Spirally install the inlet section 5 on the top of the embedded section 4, wind a water sealing tape at the connection between the two, and set an annular water tight strip, and then carry out the paving and casting of the cement layer 2;

[0057] C. Bridge deck asphalt paving stage: Install the water grating section 6 on the top of the inlet section 5, and set an annular water sealing glue at the connection between the two, and then carry out the paving and casting of the asphalt layer 3;

[0058] D. Drainage system assembly stage: Hermetically connect the outlet section 7 to the bottom of the embedded section 4, then connect the top end of the main drainage section 8 to the bottom of the outlet section 7 and set a sealing glue, and fix the main drainage section 8 through a fixed pipe clamp 9 to form a complete drainage system.

[0059] A specific implementation manner provided by the present utility model on the basis of the second implementation manner is as follows:

[0060] During the precast stage of the beam body and the stage of the bridge deck cement paving, the inner lining of the embedded section 4 and the entrance section 5 supports the internal formwork. After the beam body is poured or the cement layer 2 is paved, the internal formwork is removed.

[0061] The setting of the internal formwork can reduce the damage caused to the embedded section 4 and the entrance section 5 during the concrete vibration, and improve the stability and safety of the embedded section 4 and the entrance section 5.

[0062] Compared with the prior art, the installation method of the drain pipe provided in this embodiment forms and fixes the embedded section 4 together during the pouring stage of the bridge body 1, reducing the subsequent hole drilling and sealing steps. Moreover, the entrance section 5 is constructed together with the bridge deck cement paving, and the outlet section 7 is constructed together with the bridge deck asphalt paving, improving the overall construction efficiency.

[0063] As Figure 1 、 Figure 2 and Figure 4 shown, the third embodiment of the present utility model provides a maintenance method for a drain pipe, including the following steps:

[0064] A. Stage of removing the existing drain pipe: After removing the damaged existing drain pipe, grind the cross-section of the holes in the existing bridge body 1 and the cement layer 2 and remove the rust from the steel bars. Place the new embedded section 4 into the hole of the bridge body 1. This new embedded section 4 includes an embedded pipe 41 and a lower-edge sealing stiffener 42, and is inserted into the hole from the lower part of the bridge body 1. Remove the upper-edge stiffener 43 and the middle stiffener 44 for easy installation, and fill the gap between the inner wall of the hole in the bridge body 1 and the outer wall of the embedded section 4 with micro-expansion cement mortar or sealant treatment;

[0065] B. Installation of other components: After the embedded section 4 is installed, install the entrance section 5 into the cement layer 2 and seal it with the embedded section 4. Install the water-screening section 6 in the asphalt layer 3 and seal it with the entrance section 5. After the elevation of the entrance section 5 and the water-screening section 6 is adjusted, fill the gap between the entrance section 5 and the cement layer 2 and the gap between the water-screening section 6 and the asphalt layer 3 with cement mortar and seal it tightly;

[0066] C. Connection with the existing drainage system: Seal the outlet section 7 to the bottom of the embedded section 4 and seal the outlet section 7 to the existing drainage main section 8 to complete the maintenance and replacement of the drain pipe.

[0067] Compared with the prior art, the maintenance method of the drain pipe provided in this embodiment directly removes the damaged part in the bridge body 1 during the maintenance and replacement of the drain pipe, processes the hole and installs the new embedded section 4, makes it sealed and fixed with the bridge body 1, then installs the entrance section 5, the water-screening section 6 and the outlet section 7 in sequence, and finally seals the outlet section 7 to the existing drainage main section 8 to form a new drainage system, with low replacement cost and high efficiency.

[0068] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drain pipe for installation on a bridge body (1), wherein a cement layer (2) and an asphalt layer (3) are sequentially laid on the top surface of the bridge body (1), and is characterized in that, The drain pipe includes: An embedded section (4) for being embedded in the bridge body (1) during the casting of the bridge body (1); An inlet section (5) arranged in the cement layer (2), and the bottom of the inlet section (5) is hermetically connected to the embedded section (4); A water screening section (6) arranged in the asphalt layer (3), and the bottom of the water screening section (6) is hermetically connected to the inlet section (5); An outlet section (7) arranged below the bridge body (1), and the top of the outlet section (7) is hermetically connected to the embedded section (4); and A main drainage section (8) arranged below the bridge body (1), and the top of the main drainage section (8) is hermetically connected to the outlet section (7).

2. The drain pipe according to claim 1, characterized in that, The embedded section (4) includes: An embedded pipe (41) embedded in the bridge body (1), and A lower edge sealing stiffening rib (42) arranged around the bottom end of the outer peripheral surface of the embedded pipe (41).

3. The drain pipe according to claim 2, characterized in that, The embedded section (4) further includes: An upper edge stiffening rib (43) arranged around the top end of the outer peripheral surface of the embedded pipe (41); and A middle stiffening rib (44) arranged around the middle of the outer peripheral surface of the embedded pipe (41).

4. The drain pipe according to claim 1, wherein, The connection between the embedded section (4) and the inlet section (5) and the connection between the embedded section (4) and the outlet section (7) are both threaded connections.

5. The drain pipe according to claim 4, characterized in that, The embedded section (4) has internal threads, and the inlet section (5) and the outlet section (7) have external threads.

6. The drain pipe according to claim 1, wherein, The connection between the main drainage section (8) and the outlet section (7) and the connection between the main drainage section (8) and the bridge body (1) are both connected by fixing pipe clamps (9).

7. The drain pipe according to claim 1, characterized in that, The main drainage section (8) includes: A vertical drain pipe (81) arranged below the bridge body (1) and hermetically connected to the bottom of the outlet section (7); and A multi-directional elbow connecting pipe (82) arranged below the bridge body (1) and hermetically connected to the vertical drain pipe (81).

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