CN112176860A

CN112176860A - Bridge floor drainage system

Info

Publication number: CN112176860A
Application number: CN202011194159.3A
Authority: CN
Inventors: 罗东伟; 马骉; 蒋彦征
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-01-05

Abstract

The invention discloses a bridge floor drainage system, which comprises a bridge floor water collecting well for lateral drainage, a transverse drainage pipe, a longitudinal drainage pipe and a drainage pipe, wherein the transverse drainage pipe is arranged on the bridge floor water collecting well; the bridge floor water collecting well comprises a well seat and a well cover; the well cover is provided with a water inlet; a water outlet is formed in the side surface of the well seat; the bridge floor water collecting well is positioned above the main girder box chamber and is communicated with the transverse drain pipe; the transverse drain pipe is communicated with the longitudinal drain pipe; the water drain pipe penetrates through the main beam cantilever arm, the upper end of the water drain pipe is communicated with the longitudinal water drain pipe, and the lower end of the water drain pipe is located below the bridge floor. According to the bridge floor drainage system provided by the invention, the drainage mode of the bridge floor is improved by arranging the water collecting well for lateral drainage and the corresponding drainage pipe, so that the damage to a box chamber structure of a main girder of a bridge caused by vertically arranging the drainage pipe on the bridge with a sidewalk is avoided.

Description

Bridge floor drainage system

Technical Field

The invention relates to the technical field of bridge auxiliary structure design, in particular to a bridge deck drainage system.

Background

Bridge deck drainage is an important part of the auxiliary design of the bridge and also an important factor influencing the structural performance and the durability of the bridge. At present, most urban bridges except elevated express ways are provided with sidewalks, a bridge floor drainage system is generally provided with a bridge floor water collecting well at the lowest part of a bridge floor cross slope, namely the junction of a roadway and the sidewalks, and corresponding pipelines are laid to lead accumulated water on the bridge floor to ground rainwater wells under the bridge. When the width of the sidewalk is larger than the length of the cantilever arm of the bridge girder structure, if a mode of directly draining water from the bridge floor water collecting well to the bridge bottom vertically is adopted, the water draining pipe needs to penetrate through the girder box chamber structure, the girder is easy to damage, and inconvenience is caused to the maintenance and the repair of a bridge floor drainage system.

Disclosure of Invention

The invention aims to solve the technical problem of providing a bridge floor drainage system in order to overcome the defect that the bridge structure is easily damaged by a water diversion mode of the bridge floor drainage system with a sidewalk in the prior art.

The invention solves the technical problems through the following technical scheme:

the invention provides a bridge floor drainage system which comprises a bridge floor water collecting well for lateral drainage, a transverse drainage pipe, a longitudinal drainage pipe and a drainage pipe;

the bridge floor water collecting well comprises a well seat and a well cover; the well cover is provided with a water inlet; a water outlet is formed in the side surface of the well seat; the bridge floor water collecting well is positioned above the main girder box chamber and is communicated with the transverse drain pipe;

the transverse drain pipe is communicated with the longitudinal drain pipe;

the water drain pipe penetrates through the main beam cantilever arm, the upper end of the water drain pipe is communicated with the longitudinal water drain pipe, and the lower end of the water drain pipe is located below the bridge floor.

Preferably, the bridge where the bridge deck drainage system is located is provided with a sidewalk, the transverse drainage pipe and the longitudinal drainage pipe are laid below the sidewalk, and the bridge deck water collecting well is arranged in the bridge deck pavement thickness range along the bridge direction close to the sidewalk edge.

Preferably, the deck drainage system further comprises a first downpipe and a second downpipe,

the first downpipe is fixed on a beam body of the bridge, and the second downpipe is fixed on a pier of the bridge; and/or the upper end of the first downpipe is connected with the lower end of the water drain pipe through a flexible joint, and the lower end of the first downpipe is connected with the upper end of the second downpipe through the flexible joint.

Preferably, the bridge deck drainage system further comprises a ground rainwater well;

the lower end of the second downpipe is connected with the ground rainwater well; and/or at least two ground rainwater wells are communicated through a ground pipeline.

Preferably, the bridge deck water collecting well is made of nodular cast iron;

and/or the presence of a gas in the gas,

the transverse drain pipe, the longitudinal drain pipe and the drain pipe are made of stainless steel materials;

and/or the presence of a gas in the gas,

the downpipe is made of PVC-U (Un-plastic Polyvinyl Chloride).

Preferably, the deck sump well comprises a drainage plate; the well seat is of a cuboid structure and comprises a front plate, a rear plate, a left side plate, a right side plate and a bottom plate; the outlet set up in the back plate, the drain bar card is located the outlet, be provided with the drainage grid on the drain bar.

Preferably, the drainage plate is an L-shaped part, and the vertical surface of the L-shaped part is provided with the drainage grating;

and/or the presence of a gas in the gas,

the well cover is connected with the well base through a bolt, and the bolt is used for opening or closing the well cover on the well base;

and/or the presence of a gas in the gas,

a first supporting cross beam is arranged on the inner side of the front plate, a second supporting cross beam is arranged on the inner side of the rear plate, and the first supporting cross beam and the second supporting cross beam are used for supporting the well cover;

and/or the presence of a gas in the gas,

the left side plate and/or the right side plate are/is provided with a water seepage spring pipe inserting hole and a water seepage spring pipe; the water seepage spring pipe penetrates through the water seepage spring pipe inserting hole, one end of the water seepage spring pipe is inserted into the bridge deck water collecting well, and the other end of the water seepage spring pipe is connected to the bottom of a bridge deck asphalt pavement layer;

and/or the presence of a gas in the gas,

the bridge floor sump pit is including accomodating the tray, it arranges in to accomodate the tray on the bottom plate.

Preferably, the left side plate is provided with a first through hole; the right side plate is provided with a second through hole;

a first bolt hole matched with the first bolt and a second bolt hole matched with the second bolt are respectively formed in two sides of the well cover;

the first bolt passes through the first through hole and then is connected with the first bolt hole;

and the second bolt passes through the second through hole and then is connected with the second bolt hole.

The positive progress effects of the invention are as follows:

1) through adopting the well lid and the well seat of bolted connection bridge face sump pit, the well lid can be opened around the bolt rotation simultaneously, has realized that the well lid is at the firm fixed and the daily maintenance of the current environment of bridge floor vehicle and has opened the needs.

2) The bridge floor water collecting well which drains water laterally is adopted, so that the bridge floor rainwater can be drained to the ground without the water drain pipe penetrating through the main beam box chamber structure.

3) Through set up the drainage grid in the well seat exit of bridge floor sump pit, carry out secondary filter to the rainwater that flows into the sump pit, prevent that rubbish from flowing into and blocking up drain pipe and outlet conduit.

4) The transverse drain pipe and the longitudinal drain pipe are arranged below the sidewalk, so that the problem that the drain pipes are exposed is solved ingeniously, and the damage and the aging caused by the exposure of the drain pipes are avoided. The bridge floor water collecting well is made of nodular cast iron, and the transverse drain pipe, the longitudinal drain pipe and the drain pipe below the sidewalk are made of stainless steel, so that the problem of durability of a bridge floor drainage system is solved.

5) Through the arrangement of the flexible connection between the drain pipe and the first water falling pipe and between the first water falling pipe and the second water falling pipe, the adaptability of the bridge deck drainage system to the deformation of the upper lower structure of the bridge is enhanced.

Drawings

FIG. 1 is a schematic structural elevational view of a deck drainage system in accordance with a preferred embodiment of the present invention.

FIG. 2 is an enlarged view of part A of the deck drainage system in accordance with the preferred embodiment of the present invention.

FIG. 3 is a schematic structural view of a side draining deck sump according to a preferred embodiment of the present invention.

FIG. 4 is a schematic plan view of the connection of the drain pipe in the preferred embodiment of the present invention.

FIG. 5 is a schematic diagram of a well seat structure of a laterally draining deck sump well in a preferred embodiment of the invention.

FIG. 6 is a schematic view of a drainage plate structure of a side draining deck sump according to a preferred embodiment of the present invention.

FIG. 7 is a schematic view of the structure of the well cover of the bridge deck water collecting well for lateral drainage in the preferred embodiment of the present invention.

Detailed Description

The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.

Referring to fig. 1 to 7, the present embodiment provides a bridge floor drainage system 1000, a bridge 30 where the bridge floor drainage system 1000 is located is provided with a sidewalk 31, and the bridge floor drainage system 1000 includes a bridge floor sump 1 for laterally draining water, a transverse drainage pipe 5, a longitudinal drainage pipe 6, and a drainage pipe 7;

the bridge floor water collecting well comprises a well seat 2 and a well cover 3; the well cover 3 is positioned at the top of the well seat 2, a water inlet grid is arranged on the well cover 3 and serves as a water inlet, and rainwater, sewage and the like flow into the bridge floor water collecting well; the side of the well seat 2 is provided with a water outlet 101, and the water outlet adopts a drainage grid and other parts for filtering and draining water.

Because the wide sidewalk is arranged, the bridge deck water collecting wells 1 in the embodiment are sequentially arranged at intervals along the central axis direction of the bridge, the bridge deck water collecting wells 1 are positioned above the girder box chamber 32 of the bridge and are arranged close to the edges of the sidewalk, the whole bridge deck water collecting wells are positioned in the thickness range of bridge deck pavement, the water inlet grids on the well cover 3 are close to the edges of the sidewalk, and water collection is facilitated due to the lower elevation; and the drainage port 101 at the side of the well seat 2 discharges the collected water. The bridge floor water collecting well 1 is communicated with a transverse drain pipe 5; the transverse drain pipe 5 is communicated with the longitudinal drain pipe 6; when one span of the bridge is long, a plurality of transverse drain pipes 5 are arranged to be communicated with one longitudinal drain pipe 6, and each transverse drain pipe 5 is correspondingly communicated with one bridge deck water collecting well 1.

In order to fully utilize the space structure of the sidewalk, the transverse drain pipe 5 and the longitudinal drain pipe 6 are laid below the sidewalk. By means of the lateral drainage structure of the bridge floor sump 1, the drain pipe 7 penetrates through the main beam cantilever arm 33, the upper end of the drain pipe 7 is communicated with the longitudinal drain pipe 6, and when the elevations of the two ends of the longitudinal drain pipe 6 are different, the upper end of the drain pipe 7 is communicated with the lower end of the elevation of the longitudinal drain pipe 6. The lower end of the downcomer 7 is located below the deck so that it does not need to pass through the main beam box 32 to disrupt its structure.

In this embodiment, the bridge deck drainage system 1000 further includes a first downpipe 8 and a second downpipe 9, the first downpipe 8 is fixed to a beam of a bridge, and the second downpipe 9 is fixed to a pier of the bridge; in a preferred embodiment, the upper end of the first downpipe 8 is connected to the lower end of the drain pipe 7 by a flexible joint 40, and the lower end of the first downpipe 8 is connected to the upper end of the second downpipe 9 by a flexible joint 40.

In this embodiment, the bridge deck drainage system 1000 further includes a ground rainwater well 10, and the lower end of the second downpipe 9 is connected to the ground rainwater well 10; in a preferred embodiment, at least two ground catch wells are connected by a ground pipe 11, and the ground pipe 11 is accessible to a municipal drainage system.

As a preferred embodiment, the bridge deck water collecting well 1 is made of nodular cast iron; the transverse drain pipe 5, the longitudinal drain pipe 6 and the drain pipe 7 are made of stainless steel materials; the downpipe is made of PVC-U material.

In the embodiment, the whole well seat 2 of the bridge floor water collecting well 1 for laterally draining water is a cuboid, and the well seat 2 comprises a rear plate 21; also comprises a front plate 22, a left side plate 23, a right side plate 24 and a bottom plate 25; and comprises a drain board 4 which is independently arranged; the back plate 21 is provided with a water outlet 101, the drain plate 4 is clamped in the water outlet 101, the drain plate 4 is provided with a drain grating for draining, the water inlet grating of the well lid 3 filters water flow, and secondary filtration is carried out when water flow is drained, so that blockage is prevented.

In a preferred embodiment, the drainage plate 4 is an L-shaped member, and the vertical surface of the drainage plate is provided with a drainage grid, and the horizontal surface can support the drainage plate 4 to be vertically placed and clamped in the drainage port 101. The drain board 4 is easy to be disassembled, and is convenient for regular cleaning and maintenance or replacement.

In this embodiment, well lid 3 passes through bolted connection with well seat 2, thereby well lid 3 opens or closes on well seat 2 around the bolt rotation. Specifically, the left side plate 23 is provided with a first through hole 301; the right side plate 24 is provided with a second through hole; a first bolt hole 201 matched with a first bolt and a second bolt hole matched with a second bolt are respectively formed in two sides of the well cover 3; the first bolt hole 201 and the second bolt hole are provided with internal threads matched with the first bolt and the second bolt for use; the first bolt passes through the first through hole 301 and then is connected with the first bolt hole 201; the second bolt passes through behind the second through-hole and second bolt hole connection, owing to be the symmetry setting, does not describe here any more.

In this embodiment, the front plate 22 inboard is provided with first supporting beam 26, and the back plate 21 inboard is provided with second supporting beam 27, and first supporting beam 26 and second supporting beam 27 are used for supporting well lid 3 makes well lid 3 can firmly fix and open when being convenient for daily maintenance in the current easy environment that shakes of bridge floor vehicle.

In this embodiment, the left side plate 23 and/or the right side plate 24 are provided with water permeable spring tube insertion holes 28; the water seepage spring pipe is laid at the bottom of the bridge deck asphalt pavement layer along the edge of the sidewalk along the bridge direction, and one end of the water seepage spring pipe is inserted into the bridge deck water collecting well 1 through the water seepage spring pipe inserting hole 28, so that accumulated water in the bridge deck asphalt pavement layer is discharged through the bridge deck water collecting well 1, and the safety of a bridge structure is ensured.

As a preferred implementation mode, the main body component of the bridge floor sump pit comprises a pit seat 2, a pit cover 3 and a drainage plate 4, and the main body component is made of nodular cast iron.

In this embodiment, there is the tray of accomodating in the bridge floor sump pit, accomodates the tray and for independent setting, can take out alone, and the bottom plate 25 is just arranged in daily for collect debris such as leaf, cigarette butt that the rainwater brought in from the grid that intakes between, the maintainer of being convenient for regularly clears up.

Compared with the prior art, the bridge floor drainage system that this embodiment provided has solved the exposed problem of drain pipe through setting up horizontal drain pipe and longitudinal drain pipe in the below of pavement, has avoided it because expose the damage that causes outward ageing. And the bridge floor drainage mode is improved by arranging the bridge floor water collecting well for lateral drainage and the corresponding drainage pipe, so that the damage to the box chamber structure of the girder of the bridge is avoided.

While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims

1. A bridge floor drainage system is characterized by comprising a bridge floor water collecting well for lateral drainage, a transverse drainage pipe, a longitudinal drainage pipe and a drainage pipe;

the transverse drain pipe is communicated with the longitudinal drain pipe;

2. The bridge deck drainage system of claim 1, wherein the bridge deck drainage system is located on a bridge having a sidewalk, the transverse drainage pipe and the longitudinal drainage pipe are laid below the sidewalk, and the bridge deck water collection well is located within a bridge deck pavement thickness range along the bridge next to the sidewalk edge.

3. The deck drainage system of claim 1, further comprising a first downspout and a second downspout;

4. A deck drainage system as claimed in claim 3, wherein said deck drainage system further comprises a ground catch basin;

5. The deck drainage system of claim 3, wherein said deck sump well is of ductile iron material;

and/or the presence of a gas in the gas,

the first downpipe and the second downpipe are made of PVC-U materials.

6. A deck drainage system as claimed in claim 1, wherein said deck water collection well comprises a drainage plate; the well seat is of a cuboid structure and comprises a front plate, a rear plate, a left side plate, a right side plate and a bottom plate; the outlet set up in the back plate, the drain bar card is located the outlet, be provided with the drainage grid on the drain bar.

7. A bridge deck drainage system as claimed in claim 6 wherein said drainage plate is an L-shaped member having the vertical face thereof provided with said drainage grid;

and/or the presence of a gas in the gas,

8. A deck drainage system as claimed in claim 7,

the left side plate is provided with a first through hole; the right side plate is provided with a second through hole;