Drainage structure

Abstract

The utility model discloses a drainage structure, which comprises a groove body, a drainage channel, a drainage channel, a drainage channel, a drainage channel, a drainage channel, a drainage channel, a drainage channel and a drainage channel, the plurality of water seepage openings are formed in the other side of the groove body and are used for receiving seepage water below an asphalt pavement layer of the road; the drainage cover plate is positioned above the tank body; and the drain hole is positioned at the bottom of the groove body and is used for draining the collected road surface or bridge surface rainwater. A traditional point drainage mode is changed into a bridge floor full-length water collection drainage mode, so that the water catchment and water collection area is increased, the bridge floor drainage efficiency is improved, and bridge floor water can be rapidly and effectively drained to the position below a bridge.

Description

Technical Field

[0001] This utility model belongs to the field of bridge drainage system design, and specifically relates to a drainage structure. Background Technology

[0002] Bridge drainage is a crucial aspect of bridge design, directly impacting its safety, durability, and aesthetic appeal. From a safety perspective, quickly removing water from the bridge deck and preventing rainwater seepage into the beams better protects the bridge structure. From a vehicular safety perspective, it reduces the risk of vehicle skidding and brake failure caused by water accumulation. From a durability perspective, it minimizes cracking and peeling of the pavement and asphalt layers due to water accumulation, extending their service life.

[0003] Currently, the two common drainage methods are direct discharge and centralized collection and discharge.

[0004] The direct discharge method mainly involves installing a certain number of drainage pipes at intervals on the bridge deck (the interval is generally about 6m to 15m), through which water is dispersed to the area under the bridge. Drainage pipes are generally made of cast iron or plastic, and the inner diameter of the drainage pipes should not be less than 150mm. The number and diameter of the drainage pipes are determined based on the bridge's catchment area, longitudinal slope, and transverse slope.

[0005] Main problems with the straight-line method:

[0006] 1. During heavy rainfall or when the longitudinal slope is too steep, rainwater often cannot drain into these drainage holes in time, resulting in low water collection efficiency and water accumulation on the bridge.

[0007] 2. Stagnant water under the asphalt pavement layer cannot be drained, leading to poor drainage and water seepage.

[0008] 3. Drainage outlets are easily clogged by debris, increasing the difficulty of maintenance.

[0009] The centralized collection and drainage system consists of inlets and drainage pipes. Water from the bridge deck is collected and discharged at intervals into drainage ditches or collection pools under the bridge via drainage pipes. Inlets are made of plastic or steel pipes, with an inner diameter not less than 150mm. The number and diameter of inlets are determined based on the bridge's catchment area, longitudinal slope, and transverse slope. The diameter of the drainage pipes is calculated based on the water volume collected, and the pipes are generally made of plastic or steel.

[0010] Key issues with centralized collection and disposal:

[0011] 1. During heavy rainfall or when the longitudinal slope is too steep, rainwater often cannot drain into these inlets in time, resulting in low water collection efficiency and water accumulation on the bridge.

[0012] 2. The inlet and outlet pipes are easily clogged by debris, increasing the difficulty of maintenance.

[0013] 3. The externally mounted drainage pipes negatively impact the overall appearance of the bridge.

[0014] 4. Inadequate maintenance of drainage pipes can lead to aging and detachment, posing a safety hazard.

[0015] In summary, existing designs lack an efficient and stable bridge drainage structure. Utility Model Content

[0016] This utility model aims to provide a prefabricated bridge deck drainage structure that changes the traditional point drainage method to a continuous water collection method along the entire bridge deck, thereby increasing the water collection area and collection efficiency, improving the drainage efficiency of the bridge deck, and ensuring that the water on the bridge can be efficiently discharged to the area below the bridge.

[0017] According to one aspect of the present invention, a drainage structure is provided, comprising: a trough, continuously arranged along the entire length of a road, with one side adjacent to the inner facade of a crash barrier; a plurality of infiltration outlets, disposed on the other side of the trough, for receiving infiltration water from under the asphalt pavement layer of the road; a drainage cover plate, located above the trough; and a drain hole, located at the bottom of the trough, for draining collected rainwater from the road surface or bridge surface.

[0018] Preferably, the trough is provided with 2cm of mortar for connection to the bridge structure; the outer side of the trough is provided with 1cm of mortar for connection to the inner side of the crash barrier.

[0019] Preferably, the tank is prefabricated in a factory using high-ductility cement-based fiber composite (ECC) with a 28-day compressive strength of not less than 50 MPa.

[0020] Preferably, the length of the prefabricated section of the trough is 100cm, and the outer rings at both ends are provided with protruding tenons and concave tenons for connecting the prefabricated sections of the trough.

[0021] Preferably, a bracket is provided on the inner side of the side wall of the tank to support the upper drainage cover plate. The drainage cover plate is a prefabricated structure and the material is the same as that of the tank.

[0022] Preferably, the multiple seepage outlets are arranged at 20cm intervals.

[0023] Preferably, the drainage cover is pre-formed into a concave arc shape; two rows of rectangular water inlets are provided on the drainage cover at 10cm intervals.

[0024] Preferably, the diameter of the drain hole is greater than or equal to 150 mm.

[0025] Preferably, the drainage structure further includes a drain pipe, which is sealed to the lower part of the drain hole with polysulfide sealant, and the drain pipe can be removed and replaced.

[0026] Preferably, the top surface of the drainage structure is flush with the top surface of the asphalt pavement layer, and the adjacent asphalt pavement layers are provided with a 1:20 water catchment slope.

[0027] This utility model discloses a drainage structure, comprising: a trough, continuously arranged along the entire length of the road, with one side adjacent to the inner facade of the crash barrier; multiple seepage outlets, located on the other side of the trough, for receiving seepage water from under the asphalt pavement layer of the road; a drainage cover, located above the trough; and drainage holes, located at the bottom of the trough, for discharging collected rainwater from the road surface or bridge deck. This utility model changes the traditional point drainage method to a continuous bridge deck drainage method, thereby increasing the water collection and drainage area, improving bridge deck drainage efficiency, and enabling bridge deck water to be quickly and effectively drained under the bridge. Attached Figure Description

[0028] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0029] Figure 1 This is a three-dimensional schematic diagram of the drainage structure according to an embodiment of the present utility model;

[0030] Figure 2 This is a three-dimensional rendering of the drainage structure according to an embodiment of the present utility model;

[0031] Figure 3 This is a cross-sectional view of the drainage structure according to an embodiment of the present utility model;

[0032] Figure 4 This is a cross-sectional view of the bridge layout according to an embodiment of the present utility model;

[0033] Figure 5 This is a plan view of the drainage cover according to an embodiment of the present utility model;

[0034] In the diagram: 1. Tank; 2. Drain outlet; 3. Tenon; 4. Tenon; 5. Bracket; 6. Drain cover; 7. Rectangular inlet; 8. Drain hole; 9. Drain pipe; 10. Polysulfide sealant; 11. Water collection slope. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0036] Reference will now be made in detail to various embodiments of the present invention, examples of which are shown in the accompanying drawings and described below. For ease of interpretation and precise definition in the appended claims, the terms “upper,” “lower,” “inner,” and “outer” are used to describe features with reference to their location in the exemplary embodiments shown in the figures.

[0037] The commonly used drainage method, which involves spaced drainage outlets for localized drainage, has several problems in practical engineering applications. For example, during heavy rainfall or when the longitudinal slope is too steep, rainwater often cannot drain into these outlets in time, leading to poor drainage and water accumulation on the bridge. Seepage water under the asphalt layer may also fail to drain, causing seepage. Especially for bridges connecting to tunnels, if water on the bridge deck cannot drain in time, rainwater will flow into the tunnel, causing water accumulation and posing a safety hazard.

[0038] In view of the problems existing in the commonly used bridge drainage methods, this utility model changes the traditional point drainage method to a continuous drainage method that collects water along the entire bridge deck. This greatly increases the water collection and drainage area, improves the drainage efficiency of the bridge deck, and allows water on the bridge deck to be drained quickly and effectively to the area under the bridge. At the same time, this drainage structure adopts a prefabricated structure and uses the new ECC material, which facilitates construction and large-scale prefabrication. In addition, the cover plate of this drainage structure can be opened, facilitating inspection, replacement, and removal of debris and blockages.

[0039] Figures 1-4 The figures show a three-dimensional schematic diagram, a three-dimensional rendering of the drainage structure, a cross-sectional view of the drainage structure, and a cross-sectional view of the bridge layout according to an embodiment of the present invention. As shown in the figures, an embodiment of the present invention provides a drainage structure, characterized in that it includes: a trough 1, continuously arranged along the entire length of the road, with one side adjacent to the inner facade of the crash barrier; multiple infiltration outlets 2, located on the other side of the trough 1, for receiving infiltration water from under the asphalt pavement layer of the road; a drainage cover 6, located above the trough 1; and drainage holes 8, located at the bottom of the trough 1, for draining collected rainwater from the road surface or bridge surface.

[0040] Existing technologies often employ a drainage method with intermittently arranged drainage outlets and localized drainage, which presents numerous problems in practical engineering applications. For example, during heavy rainfall or when the longitudinal slope is too steep, rainwater often cannot drain into these drainage holes in time, leading to poor drainage and water accumulation on the bridge. Seepage water under the asphalt layer may also fail to drain properly, causing seepage. Especially for bridges connecting to tunnel sections, if water on the bridge deck cannot drain in time, rainwater will flow into the tunnel, causing tunnel flooding and posing a safety hazard.

[0041] In view of the problems existing in the current bridge drainage methods, this utility model changes the traditional point drainage method to a drainage method that collects water along the entire length of the bridge deck. This realizes the transformation of drainage from local point drainage to drainage along the entire cross section of the bridge deck, greatly increasing the water collection and collection area, improving the drainage efficiency of the bridge deck, and enabling the water on the bridge deck to be discharged into the ground quickly and effectively, thus greatly improving the drainage efficiency.

[0042] According to an embodiment of the present invention, the trough 1 has a 2cm mortar layer underneath for connection with the bridge structure; the trough 1 has a 1cm mortar layer on its outer side for connection with the inner side of the crash barrier.

[0043] According to an embodiment of the present invention, the tank 1 is prefabricated in a factory using high ductility cement-based fiber composite material (ECC), and its 28-day compressive strength is not less than 50 MPa.

[0044] The drainage structure of this utility model embodiment uses ECC new material and is prefabricated in the factory, which greatly improves construction efficiency and construction quality.

[0045] According to an embodiment of the present invention, the length of the prefabricated section of the trough 1 is 100cm, and the outer rings at both ends are respectively provided with protruding tenons 3 and concave tenons 4 for connecting the prefabricated sections of the trough 1.

[0046] According to an embodiment of the present invention, a bracket 5 is provided on the inner side of the side wall of the tank 1 to support the upper drainage cover 6. The drainage cover is a prefabricated structure and is made of the same material as the tank 1.

[0047] According to an embodiment of this utility model, the plurality of seepage outlets 2 are arranged at intervals of 20cm.

[0048] According to an embodiment of the present invention, the drainage cover 6 is pre-formed into a concave arc shape; two rows of rectangular water inlets 7 are provided on the drainage cover 6 at intervals of 10cm.

[0049] According to an embodiment of this utility model, the diameter of the drain hole 8 is greater than or equal to 150mm.

[0050] According to an embodiment of the present invention, the drainage structure further includes a drain pipe 9, which is connected to the lower part of the drain hole 8 via polysulfide sealant 10, and the drain pipe 9 can be removed and replaced.

[0051] According to an embodiment of the present invention, the top surface of the drainage structure is flush with the top surface of the asphalt pavement layer, and a 1:20 water catchment slope 11 is provided for adjacent asphalt pavement layers.

[0052] The slope setting in this embodiment of the invention helps to improve drainage efficiency, especially in bridge design, where it can effectively guide rainwater to a designated drainage system, reducing water accumulation and potential safety risks.

[0053] This utility model provides a drainage structure, such as Figure 1 , 2 As shown in Figures 3 and 4, its main components are described in detail below:

[0054] The drainage structure trough is prefabricated in the factory using high-ductility cement-based fiber composite material (ECC) and is set along the entire length of the bridge deck at the low point of the bridge's cross slope.

[0055] A 2cm leveling mortar layer is installed at the bottom of the trough to connect with the bridge structure, and a 1cm mortar layer is installed on the outside of the trough to connect with the inside of the crash barrier.

[0056] A seepage outlet is set at approximately 20cm intervals on the inner side of the trough to drain seepage water from under the asphalt layer of the bridge deck pavement.

[0057] The standard length of the prefabricated trough section is 100cm, with protruding tenons and concave tenons on the outer rings at both ends for connecting the prefabricated sections to each other.

[0058] Brackets are installed on the inner side of the tank sidewall to support the upper drainage cover.

[0059] A drainage cover is installed on the upper part of the tank, forming a prefabricated drainage structure together with the tank body. The cover is made of the same material as the tank body.

[0060] A rectangular drain inlet is installed on the drain cover at intervals of approximately 5cm.

[0061] The drainage cover is prefabricated into a concave arc shape to facilitate water collection and drainage.

[0062] A drain hole with a diameter of not less than 150mm is installed every 5 to 8 meters in the tank.

[0063] The drain hole is connected to the drain pipe to drain the water.

[0064] The connection between the drain hole and the drain pipe is sealed with polysulfide sealant.

[0065] The drain pipe can be removed and replaced, and the connection can be sealed again with polysulfide sealant after replacement.

[0066] The top surface of the drainage structure is flush with the top surface of the asphalt pavement layer, and a 1:20 drainage slope is set on the adjacent asphalt layer for better water collection.

[0067] In summary, this utility model has the following advantages:

[0068] (1) Improve drainage efficiency: This utility model optimizes the drainage system, changing the drainage mode of the bridge deck from the traditional point drainage mode to a continuous water collection mode of the bridge deck, which significantly expands the water collection area, so that the water on the bridge can be quickly and effectively guided to the bottom of the bridge, thus optimizing the drainage performance and improving the drainage efficiency.

[0069] (2) Improved construction efficiency and quality: This utility model uses ECC high-performance concrete, a new material with excellent material strength and durability. At the same time, the prefabrication method greatly improves construction efficiency and quality, ensures the consistency and reliability of construction quality, and facilitates construction and large-scale prefabrication production.

[0070] (3) Easy to maintain and repair: This utility model, by setting an openable top cover, can remove debris and blockages from the drain outlet at any time after opening, so as to ensure smooth drainage. At the same time, it can also ensure the removal and replacement of the drain pipe, which is convenient for maintenance and repair.

[0071] The above embodiments are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the utility model. Those skilled in the art can make other variations or modifications based on the following description, and these variations, modifications, substitutions, and alterations arising from the principles and spirit of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A drainage structure, characterized in that, include: The trough (1) is arranged continuously along the entire length of the road, with one side adjacent to the inner facade of the crash barrier; Multiple seepage outlets (2) are provided on the other side of the trough (1) to receive seepage water from under the asphalt pavement layer of the road; A drainage cover (6) is located above the trough (1); Drainage hole (8), located at the bottom of the trough (1), is used to drain collected rainwater from the road surface or bridge surface.

2. The drainage structure according to claim 1, characterized in that, The trough (1) is provided with 2cm of mortar for connection with the bridge structure; The outer side of the trough (1) is provided with 1cm of mortar to connect with the inner side of the anti-collision guardrail.

3. The drainage structure according to claim 2, characterized in that, The tank (1) is prefabricated in the factory using high ductility cement-based fiber composite material (ECC), and its 28-day compressive strength is not less than 50 MPa.

4. The drainage structure according to claim 3, characterized in that, The length of the prefabricated section of the trough (1) is 100cm, and the outer rings at both ends are provided with protruding tenons (3) and concave tenons (4) for connecting the prefabricated sections of the trough (1).

5. The drainage structure according to claim 4, characterized in that, The inner side wall of the trough (1) is provided with brackets (5) to support the upper drainage cover plate (6). The drainage cover plate (6) is a prefabricated structure and the material is the same as that of the trough (1).

6. The drainage structure according to claim 1, characterized in that, The multiple seepage points (2) are arranged at 20cm intervals.

7. The drainage structure according to claim 1, characterized in that, The drainage cover (6) is pre-formed into an inwardly concave arc shape; Two rows of rectangular water inlets (7) are provided on the drainage cover (6) at 10cm intervals.

8. The drainage structure according to claim 1, characterized in that, The diameter of the drain hole (8) is greater than or equal to 150 mm.

9. The drainage structure according to claim 1, characterized in that, The drainage structure also includes: The drain pipe (9) is connected to the lower part of the drain hole (8) by polysulfide sealant (10), and the drain pipe (9) can be removed and replaced.

10. The drainage structure according to claim 1, characterized in that, The top surface of the drainage structure is flush with the top surface of the asphalt pavement layer, and the adjacent asphalt pavement layers are provided with a 1:20 water catchment slope (11).

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