Drainage structure of bridge floor

Abstract

The utility model provides a bridge floor drainage structure which comprises a bridge floor, a plurality of transverse intercepting ditches, a plurality of longitudinal drainage grooves and a sedimentation basin, the bridge floor is provided with a bridge floor cross slope and a bridge floor longitudinal slope, the transverse intercepting ditches are arranged on the bridge floor at equal intervals along the bridge direction, and the transverse intercepting ditches extend along the bridge floor cross slope. A certain included angle is formed between the transverse intercepting ditch and the transverse axis of the bridge floor, the longitudinal drainage groove extends along the longitudinal slope of the bridge floor, the transverse intercepting ditch is communicated with the longitudinal drainage groove, and the sedimentation tank is connected to the tail end of the longitudinal drainage groove in the water flow direction and externally connected with a vertical drainage system of the bridge pier. The transverse intercepting ditches and the design that the transverse intercepting ditches and the transverse axis of the bridge floor form a certain included angle are adopted, bridge floor drainage paths are increased, and drainage efficiency is improved; and the transverse intercepting ditches are in bidirectional gradient, so that the effect of accelerating rainwater is achieved, the distance from rainwater on a wide bridge floor to the intercepting ditches is effectively shortened, and the time of rainwater overflowing on the bridge floor is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge design and construction, and in particular relates to a bridge deck drainage structure, which is suitable for bridge deck drainage of wide-width bridges with large spans, large longitudinal slopes, and large widths. Background Art

[0002] In current bridge construction, the drainage of bridge structures is mainly achieved by setting a transverse slope of the bridge deck, so that rainwater first flows horizontally to the longitudinal intercepting ditch inside the guardrail, and then slowly converges into the drain outlet at a certain distance from the top of the main beam. Finally, it is drained to the bridge piers through drainage pipes hung on the outer edge of the beam or inside the beam with a certain longitudinal slope, and connected to the municipal rainwater pipe network.

[0003] However, the existing drainage method for this type of bridge structure is complex and has relatively low drainage efficiency. Its bridge deck drainage only utilizes the transverse slope, resulting in a slow flow of rainwater, which is unable to effectively remove sediment from the surface of the structure. When the bridge is wide, rainwater takes a long time to converge into the longitudinal intercepting ditch, which can easily cause waterlogging on the bridge and is detrimental to driving safety. When a bridge crosses special nodes such as interchanges, railways, and factory areas, the bridge is generally high-grade, large-span, wide, and has a large longitudinal slope. This type of bridge structure drainage method requires the installation of long longitudinal suspended drain pipes, which is usually not allowed due to aesthetic, safety, and other factors, as well as low drainage efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a bridge deck drainage structure, which can at least solve some of the defects in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A bridge deck drainage structure includes a bridge deck, a transverse intercepting ditch, a longitudinal drainage trough and a sedimentation tank. The bridge deck has a transverse slope and a longitudinal slope. There are multiple transverse intercepting ditches, which are arranged at equal intervals along the bridge direction on the bridge deck, and each transverse intercepting ditch extends along the transverse slope of the bridge deck. The transverse intercepting ditch forms a certain angle with the transverse axis of the bridge deck. The longitudinal drainage trough extends along the longitudinal slope of the bridge deck. The transverse intercepting ditch is connected to the longitudinal drainage trough. The sedimentation tank is connected to the end of the longitudinal drainage trough in the water flow direction. The sedimentation tank is externally connected to the vertical drainage system of the bridge pier.

[0007] Furthermore, the transverse cross-section of the bridge deck is a micro-arch structure with a high middle and low sides. There are two longitudinal drainage grooves, which are arranged at the lowest points on both sides of the micro-arch structure. The transverse intercepting ditch extends from the middle of the micro-arch structure to the side.

[0008] Further, the transverse water intercepting ditch and the longitudinal drainage groove are obliquely connected at a confluence, and an end of the transverse water intercepting ditch extends into the longitudinal drainage groove by a distance.

[0009] Further, the width and depth of the longitudinal drainage groove are greater than the width and depth of the transverse water intercepting ditch, and the width of the sedimentation tank is greater than the width of the longitudinal drainage groove.

[0010] Further, the transverse water intercepting ditch comprises a U-shaped steel plate and a first steel grating plate covering the U-shaped steel plate, the U-shaped steel plate is embeddedly installed in a cast-in-place concrete layer of the bridge deck, and an upper surface of the first steel grating plate is flush with an upper surface of a pavement layer of the bridge deck.

[0011] Further, the U-shaped steel plate is provided with first positioning lug plates extending horizontally to the outside on both sides, bolt holes are arranged on the first positioning lug plates, and the U-shaped steel plate is fixedly connected with bolts pre-buried in the cast-in-place concrete layer of the bridge deck through the first positioning lug plates.

[0012] Further, the longitudinal drainage groove comprises a rectangular steel plate and a second steel grating plate covering the rectangular steel plate, the rectangular steel plate is embeddedly installed in the cast-in-place concrete layer of the bridge deck, and an upper surface of the second steel grating plate is flush with the upper surface of the pavement layer of the bridge deck.

[0013] Further, the rectangular steel plate is provided with second positioning lug plates extending horizontally to the outside on both sides, bolt holes are arranged on the second positioning lug plates, and the rectangular steel plate is fixedly connected with bolts pre-buried in the cast-in-place concrete layer of the bridge deck through the second positioning lug plates.

[0014] Further, the sedimentation tank comprises a sedimentation tank body and a filter screen, the sedimentation tank body is arranged at an end of the longitudinal drainage groove, and the filter screen is arranged between the sedimentation tank body and a vertical drainage system.

[0015] Further, rubber waterproof pads are arranged at the transverse water intercepting ditch, the longitudinal drainage groove and the sedimentation tank.

[0016] Compared with the prior art, the bridge deck drainage structure has the following beneficial effects:

[0017] (1) The bridge deck drainage structure has the following beneficial effects: the transverse water intercepting ditch is designed, so that the bridge deck drainage can not only flow directly to the longitudinal drainage groove along the bridge deck transverse slope, but also flow to the longitudinal drainage groove along the bridge deck longitudinal slope and then flow to the longitudinal drainage groove, the bridge deck drainage path is increased, and the drainage efficiency is improved; the transverse water intercepting ditch is designed to be at an angle with the bridge transverse axis, so that the transverse water intercepting ditch has a bidirectional slope, rainwater can be further accelerated, the distance of rainwater on a wide bridge deck to the transverse water intercepting ditch can be effectively shortened, and the time of rainwater on the bridge deck to flow is reduced.

[0018] (2) The bridge deck drainage structure provided by the utility model can effectively avoid the water accumulation phenomenon at the confluence of the transverse water intercepting ditch and the longitudinal drainage groove, greatly reducing the influence on the driving safety of the outermost carriageway.

[0019] (3) The bridge deck drainage structure provided by the utility model can meet the drainage requirements of special nodes such as important roads, railways and factory areas on large-span bridges, and avoid the problems of insecurity and poor appearance caused by the external hanging of the drainage pipe.

[0020] The utility model will be further described in detail below with reference to the drawings. DRAWINGS

[0021] Figure 1 is the bridge deck drainage structure schematic view of the utility model;

[0022] Figure 2 is the cross section schematic view of the transverse water intercepting ditch in the embodiment of the utility model;

[0023] Figure 3 is the cross section schematic view of the longitudinal drainage groove in the embodiment of the utility model;

[0024] Figure 4 is the plan view of the joint between adjacent longitudinal drainage grooves in the embodiment of the utility model;

[0025] Figure 5 is the cross section schematic view of the sedimentation tank in the embodiment of the utility model.

[0026] Mark 1, bridge deck; 2, transverse water intercepting ditch; 3, longitudinal drainage groove; 4, sedimentation tank; 5, vertical drainage system; 6, cast-in-place concrete layer; 7, paving layer; 8, first steel grating; 9, U-shaped steel plate; 10, first positioning lug plate; 11, bolt; 12, rubber waterproof pad; 13, second steel grating; 14, rectangular steel plate; 15, second positioning lug plate; 16, joint; 17, sedimentation tank body; 18, filter screen. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] In the description of the utility model, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relationship based on the drawings shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0029] In the description of the utility model, it needs to be understood that the terms "mounting", "connection" and "connecting" should be understood in a broad sense unless otherwise explicitly specified and limited, for example, it can be fixed connection, can be detachable connection, can be abutting connection or integrally connected, and the specific meaning of the above terms in the utility model can be understood according to the specific circumstances for the ordinary skilled person in the art.

[0030] The terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features; in the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0031] As shown in Figure 1 The utility model provides a bridge deck drainage structure, including bridge deck 1, transverse water intercepting ditch 2, longitudinal drainage groove 3 and sedimentation tank 4, the bridge deck 1 has bridge deck transverse slope and bridge deck longitudinal slope, the transverse water intercepting ditch 2 has multiple, and is arranged along the bridge deck 1 in equidistant interval in the bridge direction, and each transverse water intercepting ditch 2 is arranged along the bridge deck transverse slope and extends, the transverse water intercepting ditch 2 is at a certain angle with the bridge deck 1 transverse axis, the longitudinal drainage groove 3 is arranged along the bridge deck longitudinal slope and extends, the transverse water intercepting ditch 2 is connected with the longitudinal drainage groove 3, the sedimentation tank 4 is connected to the longitudinal drainage groove 3 water flow direction end, and the sedimentation tank 3 circumscribes vertical drainage system 5 of bridge pier.

[0032] In the embodiment, the bridge deck 1 has two drainage paths for water accumulation: (1) bridge deck 1 (along the longitudinal slope) → transverse gutter 2 → longitudinal drainage groove 3 → sedimentation tank 4 → vertical drainage system 5 at the pier, and (2) bridge deck 1 (along the transverse slope) → longitudinal drainage groove 2 → sedimentation tank 3 → vertical drainage system 4 at the pier. Compared with the existing bridge deck 1 drainage that only uses the transverse slope, the bridge deck drainage structure of the embodiment increases the drainage path and improves the bridge deck drainage efficiency. In addition, in the embodiment, the transverse gutter 2 is arranged at an angle with the transverse axis of the bridge deck 1, that is, the transverse gutter is arranged obliquely. This arrangement makes the transverse gutter 2 have a bidirectional slope (i.e., a transverse slope and an oblique slope), which can further accelerate the flow rate of rainwater in the transverse gutter 2 compared with the existing unidirectional transverse slope. At the same time, the oblique arrangement of the transverse gutter 2 can also effectively shorten the distance of rainwater on the wide bridge deck from flowing to the gutter and reduce the time of rainwater on the bridge deck 1 from flowing. The bridge deck drainage structure provided by the embodiment can meet the drainage requirements of special nodes such as important roads, railways, and factory areas on large-span bridges and avoid the problems of insecurity and unsightliness caused by the external hanging of drainage pipes.

[0033] For a wide bridge deck 1, in order to reduce the time of rainwater on the bridge deck 1 from flowing to the longitudinal drainage groove 3, the transverse cross section of the bridge deck 1 can be designed as a micro-arch structure with a high middle and low sides. The longitudinal drainage groove 3 has two parts arranged at the lowest points of the two sides of the micro-arch structure, and the transverse gutter 2 is arranged by extending from the middle to the sides of the micro-arch structure. In this way, the bridge deck rainwater can be divided into two parts and drained to the two sides, respectively, to improve the drainage efficiency.

[0034] Preferably, the transverse gutter 2 and the longitudinal drainage groove 3 are obliquely intersected at the confluence, and the end of the transverse gutter 2 extends into the longitudinal drainage groove 3 by a certain distance to avoid the water stagnation phenomenon at the confluence of the transverse gutter 2 and the longitudinal drainage groove 3, thereby greatly reducing the impact on the safety of the outermost driving lane.

[0035] Preferably, the width and depth of the longitudinal drainage groove 3 are greater than those of the transverse gutter 2, so that the rainwater in the transverse gutter 2 can be smoothly drained into the longitudinal drainage groove 3. In addition, the width of the sedimentation tank 4 is greater than that of the longitudinal drainage groove 3, so that the cross-sectional area of the rainwater in the longitudinal drainage groove 3 increases when entering the sedimentation tank 4, the flow rate is reduced, and the mud and sand mixed in the rainwater can be concentrated and filtered, which is convenient for cleaning by the staff.

[0036] As a specific embodiment, as Figure 2As shown, the transverse waterway 2 includes a U-shaped steel plate 9 and a first steel grating plate 8 covering the U-shaped steel plate 9, wherein the U-shaped steel plate 9 serves as the main body of the transverse waterway 2 for drainage, and during installation, the U-shaped steel plate 9 is embedded in the cast-in-place concrete layer 6 of the bridge deck 1, and the reinforcement in the cast-in-place concrete layer 6 can be used to temporarily position the U-shaped steel plate 9; the first steel grating plate 8 serves as the main body for smoothly connecting with the top surface of the carriageway and protecting the transverse waterway 2, and during installation, the upper surface of the first steel grating plate 8 is flush with the upper surface of the pavement layer 7 of the bridge deck 1, and at the same time, the first steel grating plate 8 also serves as the water inlet of the transverse waterway 2.

[0037] For the fixing mode of the U-shaped steel plate 9 in the cast-in-place concrete layer 6, in some embodiments, a first positioning lug 10 extending horizontally outward is designed on both sides of the U-shaped steel plate 9, the first positioning lug 10 is provided with a bolt hole, and a sleeve for anchoring a bolt 11 is pre-buried in the cast-in-place concrete layer 6; during installation of the U-shaped steel plate 9, the first positioning lug 10 of the U-shaped steel plate 9 is fixedly connected with the pre-buried bolt 11 in the cast-in-place concrete layer 6 through the bolt hole, which is convenient for later replacement and maintenance. Preferably, the U-shaped steel plate 9 and the first positioning lug 10 are integrated.

[0038] Further, a rubber waterproof pad 12 can be arranged on the first positioning lug 10 and fixedly connected with the first positioning lug 10 through the pre-buried bolt 11 in the cast-in-place concrete layer 6, so as to improve the waterproof performance of the connection between the first positioning lug 10 and the cast-in-place concrete layer 6.

[0039] Optimally, the inner section of the U-shaped steel plate 9 is polished and smoothed to reduce water flow resistance, reduce loss of kinetic energy, and avoid accumulation of silt to cause bridge surface water, thereby ensuring safety of driving.

[0040] As a specific embodiment, as shown in the drawings, Figure 3 As shown, the longitudinal drainage groove 3 includes a rectangular steel plate 14 and a second steel grating plate 13 covering the rectangular steel plate 14, wherein the rectangular steel plate 14 serves as the main body of the longitudinal drainage groove 3 for drainage, and during installation, the rectangular steel plate 14 is embedded in the cast-in-place concrete layer 6 of the bridge deck 1, and the reinforcement in the cast-in-place concrete layer 6 can be used to temporarily position the rectangular steel plate 14; the second steel grating plate 13 serves as the main body for smoothly connecting with the top surface of the carriageway and protecting the longitudinal drainage groove 3, and during installation, the upper surface of the second steel grating plate 13 is flush with the upper surface of the pavement layer 7 of the bridge deck 1, and at the same time, the second steel grating plate 13 also serves as the water inlet of the longitudinal drainage groove 3.

[0041] For the fixing mode of the rectangular steel plate 14 in the cast-in-place concrete layer 6, in some embodiments, the two sides of the rectangular steel plate 14 are designed to be provided with second positioning lugs 15 extending horizontally to the outside, the second positioning lugs 15 are provided with bolt holes, sleeves for anchoring the bolts 11 are pre-buried in the cast-in-place concrete layer 6, and when the rectangular steel plate 14 is installed, the second positioning lugs 15 of the rectangular steel plate 14 are fixedly connected with the pre-buried bolts 11 in the cast-in-place concrete layer 6 through the bolt holes, so that the later replacement and maintenance are facilitated. It is preferred that the rectangular steel plate 14 and the second positioning lugs 15 are integrated structures.

[0042] Further, a rubber waterproof pad 12 can be arranged on the second positioning lug 15 and fixedly connected with the second positioning lug 15 through the bolt 11 pre-buried in the cast-in-place concrete layer 6, so as to improve the waterproof performance of the connection between the second positioning lug 15 and the cast-in-place concrete layer 6.

[0043] Further, the inner section of the rectangular steel plate 14 is polished and smoothed, so as to reduce the water flow resistance, reduce the loss of kinetic energy, and avoid the accumulation of silt to cause the bridge area to be flooded, thereby ensuring the safety of driving.

[0044] Optionally, as shown in Figure 4 In the embodiment, the longitudinal drainage groove 3 can be formed by splicing multiple rectangular steel plates 14 along the bridge direction, and a rubber waterproof pad 12 is arranged at the joint of the rectangular steel plates 14, and the rubber waterproof pad 12 is fixedly connected through the bolt fastening.

[0045] At the intersection of the longitudinal drainage groove 3 and the transverse water intercepting ditch 2, a corresponding cut is formed on the rectangular steel plate 14 of the longitudinal drainage groove 3, so as to connect the U-shaped steel plate 9 of the transverse water intercepting ditch 2 and make the end of the U-shaped steel plate 9 extend into the longitudinal drainage groove 3 by a certain distance.

[0046] As a specific embodiment, the sedimentation tank 4 is located at the end of the longitudinal drainage groove 3, and functions to slow down the water flow and separate silt. The size of the sedimentation tank 4 is larger than that of the longitudinal drainage groove 4 in width and depth, and a layer of filter screen 18 is additionally arranged. The rest of the structure is the same as that of the longitudinal drainage groove 3. Specifically, as shown in Figure 5 The sedimentation tank 4 includes a sedimentation tank body 17 and a filter screen 18. The sedimentation tank body 17 is arranged at the end of the longitudinal drainage groove 3, and the filter screen 18 is arranged between the sedimentation tank body 17 and the vertical drainage system 5. The sedimentation tank body 17 can also be formed by a rectangular steel plate structure with positioning lugs arranged on the two sides. When installed, the sedimentation tank body 17 is embedded in the cast-in-place concrete layer 6 of the bridge deck 1 and is fixedly connected with the cast-in-place concrete layer 6 through the bolts 11. In addition, a steel grating plate is arranged above the sedimentation tank body 17, so as to smoothly connect with the top surface of the driving lane and protect the sedimentation tank body 17.

[0047] Further, the steel structures in the embodiment are subjected to corrosion prevention treatment.

[0048] The bridge deck drainage structure construction process of the embodiment is as follows:

[0049] 1) According to the bridge width and the longitudinal segmentation of the main beam, the factory prefabricates the transverse water intercepting ditch 2, the longitudinal drainage groove 3, and the sedimentation tank 4, and performs corrosion protection treatment.

[0050] 2) When the cast-in-place concrete layer 6 of the bridge deck 1 is cast in place, the U-shaped steel plate 9 of the transverse water intercepting ditch 2, the rectangular steel plate 14 of the longitudinal drainage groove 3, the sedimentation tank main body 17 of the sedimentation tank 4, and the bolt-anchored sleeve at the corresponding position are embedded in the cast-in-place concrete layer 6, and the accuracy of the embedded position is ensured.

[0051] 3) At the positions of the transverse water intercepting ditch 2, the longitudinal drainage groove 3, and the sedimentation tank 4, according to the height difference with the top of the paving layer 7 of the bridge deck 1, the formwork is prepared and temporarily fixed, and then the paving layer 7 of the bridge deck 1 is constructed, that is, the remaining operation construction of the waterproof layer, asphalt concrete, etc.

[0052] 4) After the paving layer 7 of the bridge deck 1 is constructed, the corresponding position formwork is removed, and then the rubber waterproof pad 12 is constructed above the transverse water intercepting ditch 2, the longitudinal drainage groove 3, and the sedimentation tank 4, and the bolt 11 is tightened.

[0053] 5) The steel grating plate at the positions of the transverse water intercepting ditch 2, the longitudinal drainage groove 3, and the sedimentation tank 4 is constructed, and the steel grating plate is ensured to be smoothly connected with the top surface of the paving layer 7 of the bridge deck 1.

[0054] The above examples are only illustrative of the present utility model, and do not constitute a limitation on the protection scope of the present utility model. Any design identical or similar to the present utility model belongs to the protection scope of the present invention.

Claims

1. A bridge deck drainage structure, characterized by: The bridge deck has a deck transverse slope and a deck longitudinal slope, the transverse gutters are arranged at equal intervals along the bridge deck in the bridge transverse direction, each of the transverse gutters is arranged along the deck transverse slope, the transverse gutters are at an angle with the deck transverse axis, the longitudinal drainage channels are arranged along the deck longitudinal slope, the transverse gutters are connected with the longitudinal drainage channels, and the sedimentation pool is connected to the end of the longitudinal drainage channel in the water flow direction and is outside the vertical drainage system of the bridge pier.

2. The deck drainage structure of claim 1, wherein: The deck transverse section is a micro-arch structure with a high middle and low sides, the longitudinal drainage channels are arranged at the two lowest points of the micro-arch structure, and the transverse gutters are arranged from the middle to the sides of the micro-arch structure.

3. The deck drainage structure of claim 1, wherein: The transverse gutters and the longitudinal drainage channels are obliquely connected at the confluence, and the end of the transverse gutter extends into the longitudinal drainage channel by a certain distance.

4. The deck drainage structure of claim 1, wherein: The width and depth of the longitudinal drainage channel are greater than the width and depth of the transverse gutter, and the width of the sedimentation pool is greater than the width of the longitudinal drainage channel.

5. The deck drainage structure of claim 1, wherein: The transverse gutter comprises a U-shaped steel plate and a first steel grating plate covering the U-shaped steel plate, the U-shaped steel plate is embeddedly installed in the cast-in-place concrete layer of the bridge deck, and the upper surface of the first steel grating plate is flush with the upper surface of the paving layer of the bridge deck.

6. The deck drainage structure of claim 5, wherein: The U-shaped steel plate is provided with first positioning ear plates extending horizontally to the outside on both sides, the first positioning ear plates are provided with bolt holes, and the U-shaped steel plate is fixedly connected with the embedded bolts in the cast-in-place concrete layer of the bridge deck through the first positioning ear plates.

7. The deck drainage structure of claim 1, wherein: The longitudinal drainage channel comprises a rectangular steel plate and a second steel grating plate covering the rectangular steel plate, the rectangular steel plate is embeddedly installed in the cast-in-place concrete layer of the bridge deck, and the upper surface of the second steel grating plate is flush with the upper surface of the paving layer of the bridge deck.

8. The deck drainage structure of claim 7, wherein: The rectangular steel plate is provided with second positioning ear plates extending horizontally to the outside on both sides, the second positioning ear plates are provided with bolt holes, and the rectangular steel plate is fixedly connected with the embedded bolts in the cast-in-place concrete layer of the bridge deck through the second positioning ear plates.

9. The deck drainage structure of claim 1, wherein: The sedimentation pool comprises a sedimentation tank body and a filter screen, the sedimentation tank body is arranged at the end of the longitudinal drainage channel, and the filter screen is arranged between the sedimentation tank body and the vertical drainage system.

10. The deck drainage structure of claim 1, wherein: Rubber waterproof pads are arranged at the transverse gutters, the longitudinal drainage channels, and the sedimentation pool.

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