CN210459251U - Scour prevention cofferdam for reinforcing bridge pier - Google Patents
Scour prevention cofferdam for reinforcing bridge pier Download PDFInfo
- Publication number
- CN210459251U CN210459251U CN201921190570.6U CN201921190570U CN210459251U CN 210459251 U CN210459251 U CN 210459251U CN 201921190570 U CN201921190570 U CN 201921190570U CN 210459251 U CN210459251 U CN 210459251U
- Authority
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- China
- Prior art keywords
- cofferdam
- wave
- main body
- retaining ring
- scouring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000002265 prevention Effects 0.000 title claims abstract description 18
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000009991 scouring Methods 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims abstract description 13
- 238000005086 pumping Methods 0.000 claims abstract description 12
- 230000008030 elimination Effects 0.000 claims abstract description 8
- 238000003379 elimination reaction Methods 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 29
- 239000010959 steel Substances 0.000 claims description 29
- 241000282472 Canis lupus familiaris Species 0.000 claims description 9
- 230000003628 erosive effect Effects 0.000 claims description 9
- 239000004927 clay Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Bridges Or Land Bridges (AREA)
- Revetment (AREA)
Abstract
An anti-scouring cofferdam for reinforcing piers comprises a cofferdam main body and a pumping device for pumping water in the space of the cofferdam main body, and is characterized in that the cofferdam main body is provided with an anti-wave structure and an anti-scouring structure, and the anti-wave structure comprises a plurality of stop blocks and a plurality of wave absorption blocks; the wave elimination block comprises a floating plate, a fixed frame and a wave elimination net; the anti-scouring structure is an annular structure and is positioned at the periphery of the bottom of the cofferdam main body, the anti-scouring structure and the cofferdam main body are of an integral structure, one side of the anti-scouring structure is a sharp-angled bulge with a thick middle and thin two sides, the anti-scouring structure has an anti-wave function, and a wave absorbing block is adopted to have a wave absorbing function on the surface waves of water flow; the top is provided with a protective baffle ring to prevent the overlarge water flow of the water wave from splashing into the cofferdam; set up multirow dog, can have the effect of blockking to the ripples. Adopt scour prevention structure, install in the dead direction of river rivers when special closed angle arch is used for separately rivers, reduce the possibility that rivers erode the damage.
Description
Technical Field
The utility model relates to a reinforced (rfd) scour prevention cofferdam of pier.
Background
The cofferdam is a temporary enclosure structure constructed for constructing permanent water conservancy facilities in the water conservancy project construction. The cofferdam has the functions of preventing water and soil from entering the building position of the building so as to drain water in the cofferdam, excavate a foundation pit and build the building. The cofferdam is mainly used in hydraulic buildings in general, and the cofferdam is dismantled after being used up except for being used as a part of a formal building. The cofferdam height is higher than the highest water level that may occur during construction.
Due to design defects, construction quality accidents, earthquakes or other natural disasters, ship impact, overload use and other reasons, the constructed bridge piers are often damaged in different degrees, so that the damaged bridges need to be repaired or reinforced. The conventional cofferdam has the following disadvantages: (1) the cofferdam has no wave-preventing function, and the top of the cofferdam is often damaged when the surface waves of the water flow around the bridge pier are large; (2) the cofferdam has the advantages that the cofferdam does not have the anti-scouring function, one side of a bridge on a river often receives water flow scouring all the year round, the bridge is easy to damage, the anti-scouring function is required to be achieved when the cofferdam is built according to the situation, the damage of the cofferdam is avoided when the pier is reinforced, and the cofferdam used at present does not have the anti-scouring structure and has certain potential safety hazards.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a reinforced (rfd) scour prevention cofferdam of pier.
The specific technical scheme is as follows:
an anti-scouring cofferdam for reinforcing piers comprises a cofferdam main body and a pumping device for pumping water in the space of the cofferdam main body, and is characterized in that the cofferdam main body is provided with an anti-wave structure and an anti-scouring structure,
the wave prevention structure comprises a plurality of stop blocks and a plurality of wave absorption blocks; the check block is of a triangular prism structure, a right-angle edge on one side is fixedly connected with the cofferdam main body, the other side of the check block is arranged in a downward inclined manner, and a circular ring is fixedly arranged on one side of the top of the check block; the stop dogs are vertically distributed in three groups from top to bottom at the upper end of the outer periphery of the cofferdam main body, the number of the stop dogs in each group is 32, and the stop dogs in each group are uniformly distributed in the circumferential direction of the outer periphery of the cofferdam;
the wave elimination block comprises a floating plate, a fixed frame and a wave elimination net; the floating plate is a square plate body, the fixed frame is a square frame, the number of wave-absorbing nets in each wave-absorbing block is multiple, the wave-absorbing nets are stacked in multiple layers, and the wave-absorbing nets are fixed in the fixed frame; when in use, the floating plate floats on the water surface, and the fixed frame is sunk under the water surface; the top of the floating plate is fixedly connected with a rope, the other end of the rope is tied to a circular ring, and a plurality of wave absorbing blocks are connected to one circular ring;
the erosion prevention structure is an annular structure and is positioned at the periphery of the bottom of the cofferdam main body, the erosion prevention structure and the cofferdam main body are of an integrated structure, one side of the erosion prevention structure is a sharp-angled bulge with a thick middle and thin two sides, and the sharp-angled bulge is arranged in the opposite direction of river water flow when in use and is used for separating the water flow; the side wall of the anti-scouring structure is of a wave-shaped structure.
Furthermore, a protective retaining ring is fixedly arranged at the top of the cofferdam main body, the protective retaining ring is of an integrated structure and is of a circular structure, the protective retaining ring comprises a first retaining ring and a second retaining ring, the bottom of the first retaining ring is connected with the top of the cofferdam main body, and the top of the first retaining ring inclines towards the outside of the cofferdam main body; the second retaining ring is positioned above the first retaining ring, the bottom of the second retaining ring is connected with the top of the first retaining ring, and the top of the second retaining ring inclines towards the inside of the cofferdam body.
Furthermore, the cofferdam main body is of a split structure and comprises two semicircular cofferdam split bodies, the two cofferdam split bodies are connected through a steel sheet pile, the steel sheet pile is of a T-shaped structure, and two right-angle grooves are formed in two sides of the steel sheet pile respectively; cofferdam components of a whole that can function independently one side gomphosis is inside the right angle inslot of steel sheet pile both sides, and steel sheet pile both sides one end still is provided with the arc, forms the packing groove between arc and the steel sheet pile, and two cofferdam components of a whole that can function independently all imbeds the inside back clay of embedding right angle inslot of a steel sheet pile, realize cofferdam components of a whole that can function independently and steel sheet pile fixed connection.
Further, the water pumping device is a water pump.
Furthermore, the protective baffle ring and the cofferdam main body are of an integrated structure.
Further, the density of the floating plate is less than that of water.
Furthermore, the fixed frame is made of steel.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model has the wave-proof function, adopts the wave-absorbing block, and has the wave-absorbing function to the surface wave of the water flow; the top is provided with a protective baffle ring to prevent the overlarge water flow of the water wave from splashing into the cofferdam; the multi-row stop blocks are arranged, so that the water wave can be stopped, and the height position of the wave absorbing block can be adjusted according to the rising tide and falling tide water levelization in different periods.
(2) Adopt scour prevention structure, install in the dead direction of river rivers when special closed angle arch is used for separately rivers, reduce the possibility that rivers erode the damage.
Drawings
Fig. 1 is a schematic cross-sectional view of the cofferdam of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
FIG. 3 is a schematic view of the direction B-B in FIG. 1.
FIG. 4 is a schematic cross-sectional view of a wave-breaking block.
Fig. 5 is a schematic cross-sectional view of a cofferdam split and a steel sheet pile in embodiment 2.
Fig. 6 is a sectional view of another cofferdam split in embodiment 2.
Fig. 7 is an enlarged schematic view at E in fig. 5.
Reference numerals
The cofferdam comprises a cofferdam body 1, a water pumping device 2, a wave-proof structure 3, a stop block 31, a circular ring 311, a wave-absorbing block 32, a floating plate 321, a fixed frame 322, a wave-absorbing net 323, a rope 33, an anti-scouring structure 4, a sharp-corner bulge 41, a protective retaining ring 8, a first retaining ring 81 and a second retaining ring 82;
the cofferdam comprises cofferdam split bodies 5, steel sheet piles 6, right-angle grooves 61, arc-shaped plates 62, filling grooves 63 and mortar 7;
a river water flow direction D and a river water flow diversion direction C.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope.
Example 1
As shown in fig. 1-4, an anti-scouring cofferdam for reinforcing bridge piers comprises a cofferdam main body and a pumping device for pumping water in the space of the cofferdam main body, and is characterized in that the cofferdam main body is of an integrated structure, the cofferdam main body is provided with an anti-wave structure and an anti-scouring structure,
the wave prevention structure comprises a plurality of stop blocks and a plurality of wave absorption blocks; the check block is of a triangular prism structure, a right-angle edge on one side is fixedly connected with the cofferdam main body, the other side of the check block is arranged in a downward inclined manner, and a circular ring is fixedly arranged on one side of the top of the check block; the stop dogs are vertically distributed in three groups from top to bottom at the upper end of the outer periphery of the cofferdam main body, the number of the stop dogs in each group is 32, and the stop dogs in each group are uniformly distributed in the circumferential direction of the outer periphery of the cofferdam;
the wave elimination block comprises a floating plate, a fixed frame and a wave elimination net; the floating plate is a square plate body, the fixed frame is a square frame, a plurality of wave-absorbing nets are arranged in each wave-absorbing block in a multi-layer stacking mode and are fixed in a multi-layer stacking mode in a sewing mode, and the wave-absorbing nets are fixed in the fixed frame through screws; when in use, the floating plate floats on the water surface, and the fixed frame is sunk under the water surface; the top of the floating plate is fixedly connected with a rope, the other end of the rope is tied to a circular ring, and a plurality of wave absorbing blocks are connected to one circular ring;
the erosion prevention structure is an annular structure and is positioned at the periphery of the bottom of the cofferdam main body, the erosion prevention structure and the cofferdam main body are of an integrated structure, one side of the erosion prevention structure is a sharp-angled bulge with a thick middle and thin two sides, and the sharp-angled bulge is arranged in the opposite direction of river water flow when in use and is used for separating the water flow; the side wall of the anti-scouring structure is of a wave-shaped structure.
The top of the cofferdam main body is fixedly provided with a protective retaining ring which is of an integrated structure and is of an annular structure, the protective retaining ring comprises a first retaining ring and a second retaining ring, the bottom of the first retaining ring is connected with the top of the cofferdam main body, and the top of the first retaining ring inclines towards the outside of the cofferdam main body; the second retaining ring is positioned above the first retaining ring, the bottom of the second retaining ring is connected with the top of the first retaining ring, and the top of the second retaining ring inclines towards the inside of the cofferdam body.
Further, the water pumping device is a water pump.
Furthermore, the protective baffle ring and the cofferdam main body are of an integrated structure.
Further, the density of the floating plate is less than that of water.
Furthermore, the fixed frame is made of steel.
Example 2
This example is different from example 1 in that,
the cofferdam main body is of a split structure and comprises two semi-annular cofferdam split bodies, the two cofferdam split bodies are connected through a steel sheet pile, the steel sheet pile is of a T-shaped structure, and two right-angle grooves are formed in two sides of the steel sheet pile respectively; inside the right angle inslot of cofferdam components of a whole that can function independently one side gomphosis in steel sheet pile both sides, steel sheet pile both sides one end still is provided with the arc, arc and steel sheet pile formula structure as an organic whole, forms the packing box between arc and the steel sheet pile, and two cofferdam components of a whole that can function independently all imbed the embedding right angle inslot portion back clay of a steel sheet pile, accomplish sealed installation, realize cofferdam components of a whole that can function independently and steel sheet pile fixed connection, use pumping device to draw water inside the cofferdam afterwards.
Claims (4)
1. An anti-scouring cofferdam for reinforcing piers comprises a cofferdam main body and a pumping device for pumping water in the space of the cofferdam main body, and is characterized in that the cofferdam main body is provided with an anti-wave structure and an anti-scouring structure,
the wave prevention structure comprises a plurality of stop blocks and a plurality of wave absorption blocks; the check block is of a triangular prism structure, a right-angle edge on one side is fixedly connected with the cofferdam main body, the other side of the check block is arranged in a downward inclined manner, and a circular ring is fixedly arranged on one side of the top of the check block; the stop dogs are vertically distributed in three groups from top to bottom at the upper end of the outer periphery of the cofferdam main body, the number of the stop dogs in each group is 32, and the stop dogs in each group are uniformly distributed in the circumferential direction of the outer periphery of the cofferdam;
the wave elimination block comprises a floating plate, a fixed frame and a wave elimination net; the floating plate is a square plate body, the fixed frame is a square frame, the number of wave-absorbing nets in each wave-absorbing block is multiple, the wave-absorbing nets are stacked in multiple layers, and the wave-absorbing nets are fixed in the fixed frame; when in use, the floating plate floats on the water surface, and the fixed frame is sunk under the water surface; the top of the floating plate is fixedly connected with a rope, the other end of the rope is tied to a circular ring, and a plurality of wave absorbing blocks are connected to one circular ring;
the erosion prevention structure is an annular structure and is positioned at the periphery of the bottom of the cofferdam main body, the erosion prevention structure and the cofferdam main body are of an integrated structure, one side of the erosion prevention structure is a sharp-angled bulge with a thick middle and thin two sides, and the sharp-angled bulge is arranged in the opposite direction of river water flow when in use and is used for separating the water flow; the side wall of the anti-scouring structure is of a wave-shaped structure.
2. The pier-reinforced anti-scouring cofferdam of claim 1, wherein the top of the cofferdam body is fixedly provided with a protective retaining ring, the protective retaining ring is of an integral structure and is of an annular structure, the protective retaining ring comprises a first retaining ring and a second retaining ring, the bottom of the first retaining ring is connected with the top of the cofferdam body, and the top of the first retaining ring is inclined towards the outside of the cofferdam body; the second retaining ring is positioned above the first retaining ring, the bottom of the second retaining ring is connected with the top of the first retaining ring, and the top of the second retaining ring inclines towards the inside of the cofferdam body.
3. The pier-reinforced erosion-preventing cofferdam of claim 1 or 2, wherein the cofferdam body is of a split structure and comprises two semi-annular cofferdam split bodies, the two cofferdam split bodies are connected through a steel sheet pile, the steel sheet pile is of a T-shaped structure, and a right-angle groove is formed in each of two sides of the steel sheet pile; cofferdam components of a whole that can function independently one side gomphosis is inside the right angle inslot of steel sheet pile both sides, and steel sheet pile both sides one end still is provided with the arc, forms the packing groove between arc and the steel sheet pile, and two cofferdam components of a whole that can function independently all imbeds the inside back clay of embedding right angle inslot of a steel sheet pile, realize cofferdam components of a whole that can function independently and steel sheet pile fixed connection.
4. The pier-reinforced erosion-preventing cofferdam of claim 2, wherein said guard rings are of an integral structure with said cofferdam body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921190570.6U CN210459251U (en) | 2019-07-26 | 2019-07-26 | Scour prevention cofferdam for reinforcing bridge pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921190570.6U CN210459251U (en) | 2019-07-26 | 2019-07-26 | Scour prevention cofferdam for reinforcing bridge pier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210459251U true CN210459251U (en) | 2020-05-05 |
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ID=70447809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921190570.6U Expired - Fee Related CN210459251U (en) | 2019-07-26 | 2019-07-26 | Scour prevention cofferdam for reinforcing bridge pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210459251U (en) |
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2019
- 2019-07-26 CN CN201921190570.6U patent/CN210459251U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 Termination date: 20210726 |
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| CF01 | Termination of patent right due to non-payment of annual fee |