CN109577278A - A kind of water channel side slope self-balancing type double-walled cofferdam - Google Patents
A kind of water channel side slope self-balancing type double-walled cofferdam Download PDFInfo
- Publication number
- CN109577278A CN109577278A CN201811533370.6A CN201811533370A CN109577278A CN 109577278 A CN109577278 A CN 109577278A CN 201811533370 A CN201811533370 A CN 201811533370A CN 109577278 A CN109577278 A CN 109577278A
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- China
- Prior art keywords
- side slope
- baffle
- water channel
- basis
- type double
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Links
- 238000010276 construction Methods 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 230000005484 gravity Effects 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Revetment (AREA)
Abstract
The invention discloses a kind of water channel side slope self-balancing type double-walled cofferdams, including being directly oriented to basis, the oblique guiding basis to match with side slope inclination is equipped at the both ends on straight guiding basis, the straight guiding basis forms coffered foundation with basic integral production molding is tiltedly oriented to, the slot of opening up setting is equipped with along coffered foundation periphery, the muti-piece baffle for being sequentially connected and connecing is plugged in slot, between adjacent screen, it is tightly connected between baffle and slot bottom, muti-piece baffle head and the tail are sequentially connected the accommodating chamber for enclosing and forming opening up setting, mass is provided in accommodating chamber；Baffle on the basis of two oblique guiding is extending upwardly to side slope and forms construction space, and the outer support arm for being connected in side slope is equipped on the baffle in construction space；The present invention facilitates the inclination angle for adjusting cofferdam and height to meet different actual requirement of engineering, simple to operate, does not influence the normal operation of water channel, economic and practical safety, and self stability is more preferable.
Description
Technical field
The invention belongs to water channel slope crack recovery technique field, in particular to a kind of water channel side slope self-balancing type double-wall case
Cofferdam.
Background technique
For water channel during operation due to differential settlement etc., side slope lining cutting can generate a large amount of slope cracks, side often
The presence in slope crack will lead to side slope and infiltration phenomenon occurs, seriously affect the safe operation of water channel, and repairs water channel side slope and split
Seam is again a technical problem.
The method of currently used repairing water channel slope crack has: diver directly carries out underwater operation repairing side slope and splits
Seam, but patch work is difficult, takes time and effort and can only repair some small slope cracks, and limitation is very big；It is built in side slope
Traditional steel cofferdam repairs slope crack for worker and provides construction space as water-retaining structure.However due to steel cofferdam by
Effect of water pressure, steel cofferdam are difficult to reach stress balance at slope crack, and steel cofferdam can be generated along side slope up and down direction
Displacement, stability is poor, and currently used solution is to cover weight at the top of steel cofferdam.It is operated not when placing weight
It is convenient, hanging device is needed, and there is provision of the bottom plate for placing weight at the top of steel cofferdam, is brought to construction all
It is mostly inconvenient.
Summary of the invention
Object of the present invention is to propose a kind of water channel side slope self-balancing to solve above-mentioned problems of the prior art
Formula Double-Wall Steel Boxed Cofferdam；It is adopted the technical scheme that in order to achieve the above objectives:
A kind of water channel side slope self-balancing type double-walled cofferdam, including it is directly oriented to basis, it is all provided at the both ends on straight guiding basis
There are the oblique guiding basis to match with side slope inclination, the straight guiding basis and the basic integral production molding of oblique guiding and is formed
Coffered foundation, along coffered foundation periphery be equipped with opening up setting slot, be plugged in slot be sequentially connected connect it is more
Block baffle is tightly connected between adjacent screen, between baffle and slot bottom, and muti-piece baffle head and the tail, which are sequentially connected, to be enclosed
The accommodating chamber of opening up setting is provided with mass in accommodating chamber；Baffle on the basis of two oblique guiding is extending upwardly to
Side slope and form construction space, outer support arm for being connected in side slope is equipped on the baffle in construction space.
Preferably, inner support arm is connected between the baffle of accommodating chamber side wall.
Preferably, the segment column for fixed baffle is equipped with along coffered foundation periphery.
Preferably, the segment column is fixed in coffered foundation, and the item for installing baffle is equipped among the column of segment
Shape slot.
Preferably, the coffered foundation bottom is fixed on water channel bed bottom or side slope by steel bonding glue, in coffered foundation
Waterstop is equipped between bottom and water channel bed bottom or side slope.
Preferably, the mass is ballast water, and the minimum gravity of ballast water determines that ballast water is most according to formula (1)
Big gravity is determined according to formula (2):
PcA cos θ=(G1+G2)sinθ+(pcA sinθ+G1cosθ+G2cosθ)μ (1)
pcA cosθ+(pcA sinθ+G1 cosθ+G2Cos θ) μ=(G1+G2)sinθ (2)
In formula, pc is the pressure at underwater portion baffle centroid, and A is the area positioned at underwater portion baffle, and θ is side
Slope inclination angle, G1For the total force of coffered foundation and baffle, G2For the gravity of ballast water, friction of the μ between coffered foundation and side slope
Coefficient.
The advantageous effect of present invention is that: the present invention is convenient by the way that cofferdam to be arranged to the structure type of double-wall case
The injection of ballast water reduces traditional steel cofferdam for the pressure effect of equilibrium water and covers weight at the top of steel cofferdam
The inconvenience caused by construction, the present invention facilitate the inclination angle for adjusting cofferdam and height to meet different actual requirement of engineering, operation letter
Folk prescription just, does not influence the normal operation of water channel, economic and practical safety, and self stability is more preferable.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention；
Fig. 2 is in Fig. 1 along sectional view along A-A.
Specific embodiment
The present invention is further described with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of water channel side slope self-balancing type double-walled cofferdam, including it is directly oriented to basis 5, directly leading
The oblique guiding basis 3 to match with side slope inclination, the straight guiding basis 5 and tiltedly guiding base are equipped with to the both ends on basis 5
3 integral production of plinth forms and forms coffered foundation 11, and the slot 10 of opening up setting is equipped with along 11 periphery of coffered foundation,
It is plugged with the muti-piece baffle 4 for being sequentially connected and connecing in slot 10, between adjacent screen 4, baffle 4 and slot seal between 10 bottom
Connection, 4 head and the tail of muti-piece baffle are sequentially connected the accommodating chamber 1 for enclosing and forming opening up setting, are provided with and match in accommodating chamber 1
Weight；Two baffles 4 being tiltedly oriented on basis 3 are extending upwardly to side slope and form construction space, on the baffle 4 in construction space
Equipped with the outer support arm 6 for being connected in side slope.
Inner support arm 9 is connected between the baffle 4 of 1 side wall of accommodating chamber.It is equipped with and is used for along 11 periphery of coffered foundation
The segment column 2 of fixed baffle 4, the segment column 2 are fixed in coffered foundation 11, and are equipped among segment column 2 for installing
The strip groove of baffle 4；11 bottom of coffered foundation is fixed on water channel bed bottom or side slope by steel bonding glue, in coffered foundation
Waterstop 12 is equipped between 11 bottoms and water channel bed bottom or side slope.
Further, the mass is ballast water 7, and the minimum gravity of ballast water 7 is determined according to formula (1), ballast water 7
Maximum gravity is determined according to formula (2):
PcA cos θ=(G1+G2)sinθ+(pcA sinθ+G1 cosθ+G2 cosθ)μ (1)
pcA cosθ+(pcA sinθ+G1 cosθ+G2Cos θ) μ=(G1+G2)sinθ (2)
In formula, pc is the pressure at underwater portion baffle centroid, and A is the area positioned at underwater portion baffle, and θ is side
Slope inclination angle, G1For the total force of coffered foundation and baffle, G2For the gravity of ballast water, friction of the μ between coffered foundation and side slope
Coefficient.
In the use of the present invention, being required to determine applying for cofferdam first with construction space according to water channel slope crack actual conditions
Station is set, highly；Then at construction location surrounding be laid with the waterstop 12 of proper width respectively with prevent coffered foundation 11 with
There is drainage in water channel side slope junction；Coffered foundation 11 is built on waterstop 12, and segment column 2 is fixed on coffered foundation 11
Slot 10 in, baffle 4 is finally inserted into slot 10 and segment column 2, guarantees that three combines closely, drainage does not occur.
The ballast water 7 for needing the minimum gravity of injection is determined according to formula (1), is determined according to formula (2) and is needed to inject maximum
Then the ballast water 7 of gravity injects suitable ballast water 7 into accommodating chamber 1, make from cofferdam stress balance, be subsequent repairing
Water channel slope crack provides safety, sufficient construction space.Baffle 4 is dismantled after the completion of construction, ballast water 7 flows into water
It is pollution-free to water channel in canal.
The present invention facilitates the injection of ballast water 7, reduces tradition by the way that cofferdam to be arranged to the structure type of double-wall case
Steel cofferdam is in order to which the pressure of equilibrium water acts on and covers weight inconvenience caused by construction, side of the present invention at the top of steel cofferdam
Just the inclination angle for adjusting cofferdam and height are simple to operate to meet different actual requirement of engineering, do not influence the normal fortune of water channel
Row, economic and practical safety, and self stability is more preferable.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
But these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (6)
1. a kind of water channel side slope self-balancing type double-walled cofferdam, which is characterized in that including being directly oriented to basis, on straight guiding basis
Both ends are equipped with the oblique guiding basis to match with side slope inclination, the straight guiding basis and tiltedly guiding basis integral production at
Type and form coffered foundation, along coffered foundation periphery be equipped with opening up setting slot, successively phase is plugged in slot
The muti-piece baffle of connection is tightly connected between adjacent screen, between baffle and slot bottom, and muti-piece baffle head and the tail are sequentially connected
The accommodating chamber for forming opening up setting is enclosed, is provided with mass in accommodating chamber；Baffle on the basis of two oblique guiding
It is extending upwardly to side slope and forms construction space, the outer support for being connected in side slope is equipped on the baffle in construction space
Arm.
2. water channel side slope self-balancing type double-walled cofferdam according to claim 1, which is characterized in that in accommodating chamber side wall
Baffle between be connected with inner support arm.
3. water channel side slope self-balancing type double-walled cofferdam according to claim 1, which is characterized in that along coffered foundation week
Side is equipped with the segment column for fixed baffle.
4. water channel side slope self-balancing type double-walled cofferdam according to claim 3, which is characterized in that the segment column is fixed
In coffered foundation, and equipped with the strip groove for installing baffle among the column of segment.
5. water channel side slope self-balancing type double-walled cofferdam according to any one of claims 1 to 4, which is characterized in that described
Coffered foundation bottom is fixed on water channel bed bottom perhaps in side slope in coffered foundation bottom and water channel bed bottom or side by steel bonding glue
Waterstop is equipped between slope.
6. water channel side slope self-balancing type double-walled cofferdam according to any one of claims 1 to 4, which is characterized in that described
Mass is ballast water, and the minimum gravity of ballast water determines that the maximum gravity of ballast water is true according to formula (2) according to formula (1)
It is fixed:
PcA cos θ=(G1+G2)sinθ+(pcA sinθ+G1cosθ+G2cosθ)μ (1)
pcA cosθ+(pcA sinθ+G1cosθ+G2Cos θ) μ=(G1+G2)sinθ (2)
In formula, pc is the pressure at underwater portion baffle centroid, and A is the area positioned at underwater portion baffle, and θ inclines for side slope
Angle, G1For the total force of coffered foundation and baffle, G2For the gravity of ballast water, friction system of the μ between coffered foundation and side slope
Number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533370.6A CN109577278A (en) | 2018-12-14 | 2018-12-14 | A kind of water channel side slope self-balancing type double-walled cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533370.6A CN109577278A (en) | 2018-12-14 | 2018-12-14 | A kind of water channel side slope self-balancing type double-walled cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109577278A true CN109577278A (en) | 2019-04-05 |
Family
ID=65928610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811533370.6A Pending CN109577278A (en) | 2018-12-14 | 2018-12-14 | A kind of water channel side slope self-balancing type double-walled cofferdam |
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| Country | Link |
|---|---|
| CN (1) | CN109577278A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409281A (en) * | 2019-08-12 | 2019-11-05 | 中交隧道工程局有限公司 | A kind of deep water drift net steel trestle |
| CN110468860A (en) * | 2019-09-18 | 2019-11-19 | 南水北调中线干线工程建设管理局 | For the water sealing structure between underwater canopy cofferdam bottom panel and lining cutting |
| CN111851542A (en) * | 2020-07-31 | 2020-10-30 | 华北水利水电大学 | Self-sinking combined steel cofferdam for channel side slope maintenance |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030156903A1 (en) * | 2002-02-19 | 2003-08-21 | Herb Wiseman | Frame members for a portable dam |
| CN202227356U (en) * | 2011-10-09 | 2012-05-23 | 中国水利水电第五工程局有限公司 | Quickly-constructed environment-friendly steel plate cofferdam |
| CN107780423A (en) * | 2017-11-24 | 2018-03-09 | 河南水建集团有限公司 | Adjustable water cofferdam |
| CN108842794A (en) * | 2018-06-19 | 2018-11-20 | 华北水利水电大学 | Assemble the absorption standard channel steel cofferdam of adjustable-angle |
| CN209636727U (en) * | 2018-12-14 | 2019-11-15 | 郑州大学 | A kind of water channel side slope self-balancing type double-walled cofferdam |
-
2018
- 2018-12-14 CN CN201811533370.6A patent/CN109577278A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030156903A1 (en) * | 2002-02-19 | 2003-08-21 | Herb Wiseman | Frame members for a portable dam |
| CN202227356U (en) * | 2011-10-09 | 2012-05-23 | 中国水利水电第五工程局有限公司 | Quickly-constructed environment-friendly steel plate cofferdam |
| CN107780423A (en) * | 2017-11-24 | 2018-03-09 | 河南水建集团有限公司 | Adjustable water cofferdam |
| CN108842794A (en) * | 2018-06-19 | 2018-11-20 | 华北水利水电大学 | Assemble the absorption standard channel steel cofferdam of adjustable-angle |
| CN209636727U (en) * | 2018-12-14 | 2019-11-15 | 郑州大学 | A kind of water channel side slope self-balancing type double-walled cofferdam |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409281A (en) * | 2019-08-12 | 2019-11-05 | 中交隧道工程局有限公司 | A kind of deep water drift net steel trestle |
| CN110409281B (en) * | 2019-08-12 | 2024-03-15 | 中交隧道工程局有限公司 | Deepwater bare rock steel trestle |
| CN110468860A (en) * | 2019-09-18 | 2019-11-19 | 南水北调中线干线工程建设管理局 | For the water sealing structure between underwater canopy cofferdam bottom panel and lining cutting |
| CN111851542A (en) * | 2020-07-31 | 2020-10-30 | 华北水利水电大学 | Self-sinking combined steel cofferdam for channel side slope maintenance |
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