CN211057607U - Drainage system of steel truss girder bridge - Google Patents
Drainage system of steel truss girder bridge Download PDFInfo
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- CN211057607U CN211057607U CN201921572398.0U CN201921572398U CN211057607U CN 211057607 U CN211057607 U CN 211057607U CN 201921572398 U CN201921572398 U CN 201921572398U CN 211057607 U CN211057607 U CN 211057607U
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Abstract
A drainage system of a steel truss girder bridge relates to the technical field of bridge design and comprises drainage grooves, wherein the drainage grooves are arranged along a longitudinal bridge direction and are positioned at the lowest position of a bridge floor of the steel truss girder bridge in a transverse bridge direction; the vertical discharge pipes are arranged at equal intervals along the longitudinal bridge direction, the vertical discharge pipes are positioned outside the drainage grooves in the transverse bridge direction, and the notches of the drainage grooves and the pipe orifices of the vertical discharge pipes are positioned on the same plane; the outer water baffle is arranged on the outer side of the vertical discharge pipe in the transverse bridge direction; the drainage system also comprises an inner water baffle, the inner water baffle surrounds the joint of the lower chord and the vertical rod into a rectangular fence with an opening at one side, and the opening of the rectangular fence faces the drainage groove; a water passing area is formed between two adjacent rectangular fences, and the corrosion of rainwater to each part of the steel truss girder bridge is reduced due to the formation of the water passing area; an object of the utility model is to provide a steel longeron bridge drainage system has solved among the prior art drainage system and has influenced great and drainage system difficult clearance, the difficult technical problem who is difficult to maintain to the major structure.
Description
Technical Field
The utility model relates to a bridge design technical field specifically is a steel truss bridge drainage system.
Background
With the continuous progress of bridge construction technology, the application of the steel truss bridge is more and more extensive. However, the steel truss bridge has a complex structure and a plurality of auxiliary structural members, and the design of a drainage structure is always a difficult problem.
The upper layer of the steel truss girder bridge is generally an automobile traffic lane or no traffic lane according to different application scenes; the lower layer is a vehicle traffic lane or a train track or the combination of the two. Traditional steel truss bridge drainage system need be at perpendicular bridge floor trompil, and the trompil position is located the railing inboard, sets up the pipeline intercommunication to vertical drain pipe in the downthehole simultaneously, and vertical drain pipe is located the bridge floor below, and it is worn to establish and fixes between multichannel cross slab, arranges bridge floor sewage to specific area through vertical drain pipe.
However, the existing drainage system has two defects:
1. the existing longitudinal collecting and arranging pipeline is arranged below a bridge floor and penetrates through a plurality of transverse clapboards which are arranged in the transverse bridge direction; in the actual construction process, a hole needs to be formed in the diaphragm plate in advance; the diaphragm plate is used as one of main bearing structures of the steel truss bridge, and the opening has more or less adverse effects on the bearing capacity of the main structure of the bridge; meanwhile, the engineering quantity of the hole opening is large, and a large amount of manpower and material resources are consumed.
2. Because the longitudinal drainage pipeline is arranged below the bridge floor, after the longitudinal drainage pipeline is used for a period of time, solid substances in sewage are not easy to clean and difficult to maintain after the drainage pipeline is blocked; and the blockage condition is not easy to be perceived, and after the blockage, rainwater and sewage formed by mixing automobile pavement abrasion, oil stains, pollutants, garbage and the like can be directly discharged to the position under the bridge, so that the water body under the bridge is polluted.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a steel truss bridge drainage system has solved among the prior art drainage system and has influenced great and drainage system difficult clearance, the technical problem who is difficult to maintain to major structure.
In order to achieve the above purposes, the technical scheme is as follows: a steel truss bridge drainage system comprising: the drainage channel is arranged along the longitudinal direction of the bridge and is positioned at the lowest position of the bridge deck of the steel truss bridge in the transverse direction of the bridge; the vertical discharge pipes are arranged at equal intervals along the longitudinal bridge direction, the vertical discharge pipes are positioned outside the drainage grooves in the transverse bridge direction, and the notches of the drainage grooves and the pipe openings of the vertical discharge pipes are positioned on the same plane; and the outer water baffle is arranged on the outer side of the vertical discharge pipe in the transverse bridge direction.
On the basis of the technical scheme, the drainage system further comprises a grating plate which is arranged on the notch of the drainage groove.
On the basis of the technical scheme, the drainage system further comprises an inner water baffle, the inner water baffle enables the joint of the lower chord and the vertical rod to form a rectangular fence with an opening at one side, and the opening of the rectangular fence faces the drainage groove.
On the basis of the technical scheme, a water passing area is formed between two adjacent rectangular fences, and waterproof layers and pouring asphalt are sequentially paved and poured in the water passing area from bottom to top.
On the basis of the technical scheme, the drainage system further comprises asphalt crack pouring materials, and the asphalt crack pouring materials are filled in the contact surface between the pavement layer of the bridge deck and the inner water baffle.
On the basis of the technical scheme, a perforated steel plate is arranged on the contact surface of the pavement layer and the pouring asphalt, and the asphalt crack pouring material is filled in the inner side of the perforated steel plate in the transverse bridge direction.
On the basis of the technical scheme, the perforated steel plate is also used for fixing a drainage spiral pipe; and the drainage spiral pipe penetrates through a hole at the bottom of the perforated steel plate and is arranged at the asphalt crack pouring material and the bottom of the poured asphalt to form a comb-shaped pipeline structure facing the drainage groove.
On the basis of the technical scheme, the pavement layer is divided into an upper pavement layer and a lower pavement layer, and when a small amount of rainwater permeating between the upper pavement layer and the lower pavement layer reaches the drainage spiral pipe through the asphalt crack pouring material, the drainage spiral pipe discharges a small amount of rainwater permeating into the drainage spiral pipe to the drainage groove.
On the basis of the technical scheme, when the steel truss bridge is a unidirectional cross slope, the drainage channel, the vertical drainage pipe and the outer water baffle are arranged on the lower side of the steel truss bridge cross bridge; when the steel truss bridge is a bidirectional cross slope, the drainage grooves, the vertical drainage pipes and the outer water baffle are arranged on two sides of the steel truss bridge in the transverse direction.
The utility model has the advantages as follows:
1. the utility model discloses a drainage system, set up the water drainage tank on the bridge floor of steel truss bridge, for the current vertical collection and drainage pipeline that passes the multichannel cross slab, the utility model discloses a drainage system is less to the influence of bridge major structure; meanwhile, holes for the longitudinal collecting and discharging pipes to penetrate through do not need to be formed in the transverse partition plate, and a large amount of manpower and material resources are saved.
2. When the rainfall is small, the drainage system of the utility model can lead the sewage generated by mixing the rainwater with the automobile pavement abrasion, the oil stain, the pollutant, the garbage and the like to flow to the drainage tank through the cross slope and then to the designated area; when the rainfall is large, the bridge floor rainwater overflows the drainage grooves and is blocked by the outer water baffle plate, and is drained to the position below the bridge through the vertical drainage pipes, so that two-stage drainage can be simply and effectively realized; simultaneously because the utility model discloses drainage system's major structure all is located the bridge floor top, when taking place to block up, easy to maintain, convenient clearance.
3. The utility model discloses drainage system's inboard breakwater encloses into lower chord member and montant junction opening on one side towards the rectangle rail of water drainage tank, and the bridge upper berth is equipped with the layer of mating formation, has laid in the water-passing area and has pour pitch and waterproof layer, and multiple safeguard procedures have reduced the rainwater to the corruption of each position of steel truss bridge, have reduced the maintenance cost, have prolonged the life of steel truss bridge.
Drawings
Fig. 1 is the utility model discloses steel truss girder bridge structure schematic diagram.
Fig. 2 is a partial enlarged view I of fig. 1.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a sectional view B-B of fig. 3.
Fig. 5 is a cross-sectional view C-C of fig. 3.
Fig. 6 is a cross-sectional view taken along line D-D of fig. 3.
Reference numerals:
1-paving layer, 2-pouring asphalt, 3-drainage channel, 4-vertical row pipe, 5-outer side water baffle, 6-lower chord, 7-gusset plate area, 8-inner side water baffle, 9-perforated steel plate, 10-drainage spiral pipe, 11-water passing area, 12-upper paving layer, 13-lower paving layer, 14-asphalt crack pouring material, 15-waterproof layer, 16-grid plate, 17-drainage pipe, 18-steel truss bridge and 19-vertical rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, a drainage system of a steel truss bridge comprises a drainage channel 3, a vertical drainage pipe 4 and an outer water baffle 5; the drainage channel 3 is arranged along the longitudinal bridge direction and is positioned at the lowest part of the bridge surface of the steel truss bridge 18 in the transverse bridge direction. A plurality of vertical row pipes 4 are arranged at equal intervals along the longitudinal bridge direction, the vertical row pipes 4 are arranged outside the drainage grooves 3 along the transverse bridge direction, and the notches of the drainage grooves 3 and the pipe orifices of the vertical row pipes 4 are arranged on the same plane. The outer water baffle 5 is arranged on the outer side of the vertical drainage pipe 4 in the transverse bridge direction and used for blocking rainwater at the openings of the drainage groove 3 and the vertical drainage pipe 4. The drainage channel 3 and the vertical row pipe 4, and the vertical row pipe 4 and the outer water baffle 5 are arranged on the transverse bridge in close proximity or at a certain distance.
Specifically, in the transverse bridge direction, the drainage grooves 3, the openings of the vertical drainage pipes 4 and the outer water baffles 5 are arranged from the center of the bridge deck to the end faces of the two sides of the steel truss bridge in sequence. When the rainfall is small, the bridge deck rainwater flows to the drainage tank 3 through the cross slope and then flows to the designated area; when the rainfall is large, the bridge floor rainwater overflows the drainage channel 3 and is blocked by the outer water baffle 5 and is discharged to the lower part of the bridge through the vertical discharge pipe 4.
Preferably, the drain channel 3 is a U-shaped channel with an upward opening. Preferably, the slope of the bridge deck cross slope of the steel truss bridge is 1.5% -2%.
In this embodiment, the drainage system further comprises a grid plate 16 mounted to the slot of the drainage channel 3. The grating plate 16 is used for primarily blocking sundries in rainwater, and plays a role in preventing external sundries from falling to the drainage channel 3 to cause blockage. When the drainage channel 3 is clogged by the debris in the rainwater, the grating plate 16 may be removed to clean the drainage channel 3.
As shown in fig. 2 and 3, the drainage system further includes an inner water baffle 8, the inner water baffle 8 encloses the joint of the lower chord 6 and the vertical rod 19 (i.e. the joint plate area 7) into a rectangular enclosure with an opening at one side, the rectangular enclosure is open towards the drainage channel 3, and the rectangular enclosure is for preventing the bridge deck rainwater from entering the joint plate area 7 and corroding the joint of the lower chord 6 and the vertical rod 19.
As shown in fig. 3, a water passing area 11 is formed between two adjacent rectangular fences, a waterproof layer 15 and poured asphalt 2 are sequentially paved on the water passing area 11 from bottom to top, and both the waterproof layer 15 and the poured asphalt 2 are used for preventing bridge deck rainwater from corroding the bridge deck when flowing through the water passing area 11. Preferably, the thickness of the casting asphalt 2 is 3 cm. Preferably, each of the water passing areas has a length of 3m in the longitudinal bridge direction.
Preferably, the drainage system further comprises asphalt crack pouring materials 14, and the asphalt crack pouring materials 14 are filled in the contact surfaces of the pavement layer 1 (the pavement layer 1 is the existing pavement layer of each bridge deck) and the inner water baffles 8 of the bridge deck. The asphalt crack sealer 14 makes the contact position of the inner water baffle 8 and the bridge surface more compact.
Furthermore, a perforated steel plate 9 is arranged on the contact surface of the pavement layer 1 and the pouring asphalt 2, and asphalt crack pouring materials 14 are filled on the inner side of the perforated steel plate 9 in the transverse bridge direction. The asphalt crack pouring material 14 enables the pavement layer 1 of the bridge deck to be in seamless transition to the pouring asphalt 2 above the water passing area 11, and the possibility that rainwater permeates and contacts the steel truss bridge body is reduced. The asphalt crack pouring material 14 close to the perforated steel plate 9 and the asphalt crack pouring material 14 close to the inner water baffle plate 8 are connected into a whole.
In this embodiment, the perforated steel plate 9 is also used to fix the drain spiral pipe 10; the water drainage spiral pipe 10 penetrates through a hole in the bottom of the perforated steel plate 9, is arranged at the bottom of the asphalt crack pouring material 14 and the poured asphalt 2, and forms a comb-shaped pipeline structure facing the water drainage groove 3. Specifically, the bottom of the asphalt crack pouring material 14 is provided with a drainage spiral pipe 10, and the drainage spiral pipe 10 is in a longitudinal bridge direction; the bottom of the pouring asphalt 2 in the water passing area 11 is also provided with a drainage spiral pipe 10 at a position close to the water baffle 8 at the upper inner side of the transverse bridge, and the drainage spiral pipe 10 is in the transverse bridge direction. Preferably, a horizontal bridge-shaped drainage spiral pipe 10 is also arranged in the middle of the pouring asphalt 2 in the water passing area 11. The drain spiral pipe 10 is mainly installed in the transition area, and when a small amount of rainwater permeates into the drain spiral pipe 10, the small amount of rainwater is drained to the drain tank 3 along the comb-shaped drain spiral pipe 10.
Specifically, the pavement layer 1 is divided into an upper pavement layer 12 and a lower pavement layer 13, when a small amount of rainwater permeates the upper pavement layer 12 and reaches between the upper pavement layer 12 and the lower pavement layer 13, the rainwater permeates into the drainage spiral pipe 10 through the asphalt caulking material 14, and after the drainage spiral pipe 10 collects the above-mentioned permeated rainwater, the small amount of rainwater in the drainage spiral pipe 10 is discharged to the drainage channel 3.
As shown in fig. 1, in the present embodiment, the steel girder bridge 18 is a one-way cross slope (one side is higher and the other side is lower in the upward direction of the steel girder bridge), and the steel girder bridge 18 is provided with a drainage channel 3, a vertical drainage pipe 4 and an outer water baffle 5 (i.e., the left side in fig. 1) on the lower side of the cross bridge.
In another embodiment, when the steel truss bridge 18 is a bidirectional transverse slope (the middle of the steel truss bridge is high and the two sides of the steel truss bridge are low) the drainage channels 3, the vertical drainage pipes 4 and the outer water baffles 5 are arranged on both sides of the steel truss bridge 18 in the transverse direction.
In this embodiment, the drainage system is installed at the lower floor of the steel girder bridge 18, and when there is a traffic lane at the upper floor of the steel girder bridge 18, rainwater at the upper floor can be drained to the drainage channel 3 through the drainage pipe 17.
The utility model discloses drainage system's theory of operation as follows:
the utility model discloses a drainage system sets up water drainage tank 3 on the bridge floor of steel truss girder bridge 18, and erects row pipe 4 and set up in one side or both sides edge of steel truss girder bridge, and its influence to bridge major structure is less.
When the rainfall is small, the rainwater and the sewage generated by mixing the automobile pavement abrasion, oil stain, pollutants, garbage and the like flow to the drainage channel 3 through the cross slope and then flow to the designated area; when the rainfall is large, the bridge deck rainwater overflows the drainage grooves 3 and is blocked by the outer water baffle 5, and is drained to the position below the bridge through the vertical drainage pipe 4, so that two-stage drainage can be simply and effectively realized; simultaneously because the utility model discloses drainage system's major structure all is located the bridge floor top, when taking place to block up, easy to maintain, convenient clearance.
In the process, when falling rainwater falls into the gusset plate area 7, the rainwater in the gusset plate area 7 is directly discharged to the drainage tank 3 through the bridge floor with the cross slope; and the rainwater that comes from the bridge floor other places flows to the in-process of water drainage tank 3 through the cross slope, can be blockked by the one side open-ended rectangle rail of constituteing by inboard breakwater 8 to the restriction rainwater passes through from the water district 11 of crossing between the rectangle rail, has avoided bridge floor rainwater to flow through gusset district 7, causes the corruption to the junction of lower chord 6 and montant 19, has reduced follow-up maintenance cost, has prolonged the life of steel truss bridge.
The present invention is not limited to the above embodiments, and for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered to be within the protection scope of the present invention. Those not described in detail in this specification are within the skill of the art.
Claims (9)
1. A steel truss bridge drainage system, comprising:
the drainage channel (3) is arranged along the longitudinal bridge direction and is positioned at the lowest position of the bridge surface of the steel truss bridge (18) in the transverse bridge direction;
the drainage system comprises a plurality of vertical drainage pipes (4) which are arranged at equal intervals along the longitudinal bridge direction, wherein the vertical drainage pipes (4) are positioned outside a drainage groove (3) in the transverse bridge direction, and the notches of the drainage groove (3) and the pipe openings of the vertical drainage pipes (4) are positioned on the same plane;
and the outer water baffle (5) is arranged on the outer side of the vertical discharge pipe (4) in the transverse bridge direction.
2. A steel truss bridge drainage system as defined in claim 1 wherein: the drainage system also comprises a grid plate (16) which is arranged at the notch of the drainage groove (3).
3. A steel truss bridge drainage system as defined in claim 1 wherein: the drainage system further comprises an inner side water baffle (8), the inner side water baffle (8) enables the joint of the lower chord (6) and the vertical rod (19) to be surrounded into a rectangular fence with an opening on one side, and the opening of the rectangular fence faces the drainage groove (3).
4. A steel truss bridge drainage system as defined in claim 3 wherein: two adjacent form between the rectangle rail and cross water district (11), cross water district (11) and from supreme laying waterproof layer (15) and pouring pitch (2) in proper order down.
5. A steel truss bridge drainage system as defined in claim 4 wherein: the drainage system also comprises asphalt crack pouring materials (14), wherein the asphalt crack pouring materials (14) are filled in the contact surface of the pavement layer (1) of the bridge deck and the inner side water baffle (8).
6. A steel truss bridge drainage system as defined in claim 5 wherein: and a perforated steel plate (9) is arranged on the contact surface of the pavement layer (1) and the pouring asphalt (2), and the asphalt crack pouring material (14) is filled in the inner side of the perforated steel plate (9) in the transverse bridge direction.
7. A steel truss bridge drainage system as defined in claim 6 wherein: the perforated steel plate (9) is also used for fixing a drainage spiral pipe (10); the drainage spiral pipe (10) penetrates through a hole in the bottom of the perforated steel plate (9) and is arranged at the bottoms of the asphalt crack pouring material (14) and the pouring asphalt (2) to form a comb-shaped pipeline structure facing the drainage channel (3).
8. A steel truss bridge drainage system as defined in claim 7 wherein: the pavement layer (1) is divided into an upper pavement layer (12) and a lower pavement layer (13), and when a small amount of rainwater permeating between the upper pavement layer (12) and the lower pavement layer (13) passes through the asphalt crack pouring material (14) to reach the drainage spiral pipe (10), the drainage spiral pipe (10) discharges a small amount of rainwater permeating into the drainage spiral pipe to the drainage groove (3).
9. A steel truss bridge drainage system as defined in any one of claims 1 to 8 wherein: when the steel truss girder bridge (18) is a unidirectional cross slope, the drainage channel (3), the vertical drainage pipe (4) and the outer water baffle (5) are arranged on the lower side of the steel truss girder bridge (18) in the transverse bridge direction; when the steel truss girder bridge (18) is a bidirectional cross slope, the drainage grooves (3), the vertical drainage pipes (4) and the outer water baffle (5) are arranged on the two sides of the steel truss girder bridge (18) in the transverse direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572398.0U CN211057607U (en) | 2019-09-20 | 2019-09-20 | Drainage system of steel truss girder bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572398.0U CN211057607U (en) | 2019-09-20 | 2019-09-20 | Drainage system of steel truss girder bridge |
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| CN211057607U true CN211057607U (en) | 2020-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565511A (en) * | 2019-09-20 | 2019-12-13 | 中铁大桥勘测设计院集团有限公司 | Drainage system of steel truss girder bridge |
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2019
- 2019-09-20 CN CN201921572398.0U patent/CN211057607U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565511A (en) * | 2019-09-20 | 2019-12-13 | 中铁大桥勘测设计院集团有限公司 | Drainage system of steel truss girder bridge |
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