CN2730944Y - Water free examining and repairing cofferdam for underwater concrete construction - Google Patents
Water free examining and repairing cofferdam for underwater concrete construction Download PDFInfo
- Publication number
- CN2730944Y CN2730944Y CN 200420080320 CN200420080320U CN2730944Y CN 2730944 Y CN2730944 Y CN 2730944Y CN 200420080320 CN200420080320 CN 200420080320 CN 200420080320 U CN200420080320 U CN 200420080320U CN 2730944 Y CN2730944 Y CN 2730944Y
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- cofferdam
- draining
- underwater concrete
- vacuum tank
- steel wire
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Abstract
The utility model relates to a water free examining and repairing cofferdam for an underwater concrete construction, which is used for examining and repairing the underwater concrete construction and creating a waterless maintenance interface and comprises a cofferdam (1) and a submersible pump (2), wherein, the submersible pump (2) is placed on the bottom of the cofferdam (1) through a draining steel wire tube (4). The utility model is characterized in that the cofferdam forms a cylindrical box girder structure, the bottom of the cofferdam is an empty box (13), the cofferdam is communicated with at least one bottom water draining device which mainly comprises a vacuum pump (9) and a vacuum tank (5), the vacuum pump (9) is connected with the vacuum tank (5) through a steel wire tube (11), the vacuum tank (5) is connected with a draining galvanized tube (3) through the draining steel wire tube (4), and the water inlet of the draining galvanized tube (3) is installed in the empty box of the bottom of the cofferdam. The utility model creates a waterless constructing condition for examining and repairing the underwater concrete construction, having low investment and convenient construction.
Description
Affiliated technical field
The utility model relates to the anhydrous maintenance of a kind of underwater concrete engineering cofferdam, is used for underwater concrete engineering supervision, maintenance, creates anhydrous maintenance interface.
Background technology
At present, inspection, maintenance at the underwater concrete engineering, anhydrous execution conditions can not be created in common cofferdam, a kind of facility that can create anhydrous construction interface of knowing altogether is " air pressure sink cabinet ", " air pressure sink cabinet " bottom is the hemispherical Shell service depot that is overlying under water, and the column passage is installed to more than the water surface in the top, service depot, and passage top is for regulating " transfer chamber " of air pressure, utilize air compressor machine in the service depot, to pressurize during construction, create anhydrous construction interface to drain wherein water body.Because service depot's internal pressure is greater than outdoor, the turnover of personnel, material, equipment will stop " transfer chamber " in, later adjusting " transfer chamber " internal gas pressure, treat that its air pressure reaches target air pressure after, personnel, material, equipment could pass through.The shortcoming of " air pressure sink cabinet " is: 1. service depot's internal pressure has higher requirements to staff's physical qualification greater than atmospheric pressure and water depth pressure sum, and the depth of water is big more, and pressure is big more, requires high more to staff's physical qualification; 2. personnel, material, machinery turnover service depot must pass through " transfer chamber " transfer, length consuming time, inconvenience; 3. equipment investment is big; 4. construction cost height.
Summary of the invention
In order to create underwater concrete engineering supervision, the anhydrous construction of maintenance interface, the utility model provides the anhydrous maintenance of underwater concrete engineering cofferdam, overcome " air pressure sink cabinet " above-mentioned shortcoming, working environment is normal, personnel, material, machinery turnover are fast, equipment investment is little, and construction cost is low, and transportation, installation, displacement are conveniently.
The utility model technical solution is: comprise cofferdam and dewatering installation, dewatering installation is communicated with the cofferdam, it is characterized in that: be communicated with at least one row's end water device on the cofferdam, row's end water device mainly comprises vacuum pump, vacuum tank, vacuum pump is communicated with vacuum tank through pipeline valve, and vacuum tank is communicated with the cofferdam through pipeline valve.
The cofferdam is cylindric, adopts the stuffing box girder construction, is divided into some joints, and buoyancy is slightly larger than deadweight in water, and observing water level just selects to install quantity during use, and internode adopts the dull and stereotyped sealing of ripe glue, and bottom and concrete joint synapsis adopt L type water stop rubber.
Dewatering installation is submersible pump or slush pump, the dirver puts sealing in order, suitably adopts submersible pump, the inner water body in slush pump pump drainage cofferdam after the leak stopping, impacts with giant when meeting mud, when water level in the cofferdam is low should not adopt submersible pump, slush pump draining the time, enable the Pai Dishui device.
Row's end water device mainly comprises vacuum pump, vacuum tank, pipeline, valve member, and vacuum pump is communicated with vacuum tank through pipeline valve, and vacuum tank is communicated with the cofferdam through pipeline valve.Start vacuum pump and extract air in the vacuum tank out, form negative pressure in the vacuum tank, after negative pressure meets the demands, open valve member, water inspiration vacuum tank at the bottom of the cofferdam is deactivated when the inner water storage of a certain vacuum tank reaches 80%～90%, devotes oneself to work after getting rid of its inner water storage again.
The configuration vacuum tank is 3～4 on the cofferdam, and inner water body can not reach sustained height simultaneously, and several vacuum tanks take turns to operate, and guarantees that the work plane draining is continuous.Pipeline is a steel wire tube, and one is connected on the vacuum tank, and the other end is connected in the empty van of cofferdam bottom, and it is negative pressure that the negative pressure of vacuum tank is impelled this empty van, and the empty van negative pressure impels that end water converges to empty van in the cofferdam in, the final eliminating, anhydrous construction interface in the creation cofferdam.
For making things convenient for cofferdam transportation and construction, supporting have a special-purpose workboat, and the ship both sides are designed to empty van, and middle accumulating negative pressure cofferdam is equipped with electric block lifting cofferdam.
The beneficial effects of the utility model are, have created the underwater concrete engineering supervision and have keeped in repair anhydrous execution conditions, drop into lower, easy construction.
Description of drawings
Fig. 1 is a structure principle chart of the present utility model
Fig. 2 is Fig. 1 cofferdam assembly unit elevation
Fig. 3 is the A-A sectional drawing among Fig. 2
Fig. 4 is the B-B sectional drawing among Fig. 3
Among the figure: 1 cofferdam, 2 submersible pumps, 3 draining galvanized pipes, 4 draining steel wire tubes,, 5 vacuum tanks, 6,7 water valves, 8 blast gates, 9 vacuum pumps, 10 cat ladders, 11 steel wire tubes, 12L type water stop rubber, bottom, 13 cofferdam empty van
The specific embodiment
As shown in the figure, this cofferdam includes cofferdam 1 and submersible pump 2, submersible pump 2 is placed 1 bottom, cofferdam by draining steel wire tube 4, it is characterized in that: cofferdam 1 is cylindric box-beam structure, its bottom is bottom, a cofferdam empty van 13, cat ladder 10 is installed on the barrel of cofferdam, and L type water stop rubber 12 is connected bottom, cofferdam and concrete joint synapsis; Be communicated with at least one row's end water device on the cofferdam, row's end water device comprises vacuum pump 9, vacuum tank 5, steel wire tube 11, draining galvanized pipe 3, draining steel wire tube 4, water valve 6,7 and blast gate 8, vacuum pump 9 links to each other with vacuum tank 5 by steel wire tube 11, blast gate 8 is installed on the steel wire tube 11, vacuum tank 5 links to each other with draining galvanized pipe 3 by draining steel wire tube 4, water valve 6 is installed on the draining steel wire tube 4, and draining galvanized pipe 3 intakes are installed in the empty van 13 of bottom, cofferdam.
During construction, at first start submersible pump 2 pump drainage cofferdam Nei Shui, when low submersible pump 2 drainings of water level in the cofferdam to no effect the time, open blast gate 8, start vacuum pump 9, constitute negative pressure in the vacuum tank 5, after negative pressure meets the demands, open water valve 6, end water imports its bottom empty van and enters draining galvanized pipe 3 along draining steel wire tube 4 injection vacuum tanks 5 in the cofferdam 1, reaches eliminating end water and creates anhydrous construction interface.
This example is installed 4 cover row end water devices, be 4 in 4 supporting vacuum pumps of vacuum tank, its vacuum pump 9 of when the inner water storage of a certain vacuum tank reaches 80%～90%, stopping transport, close its blast gate 8 and water valve 6, open vacuum tank water supply valve 7, devote oneself to work after getting rid of its inner water storage, 4 cover row end water devices take turns to operate, and guarantee that the work plane draining is continuous again.
Claims (5)
1. the anhydrous maintenance of underwater concrete engineering cofferdam, comprise cofferdam and dewatering installation, dewatering installation is submersible pump or slush pump, and submersible pump (2) is placed bottom, cofferdam (1) by draining steel wire tube (4), it is characterized in that: cofferdam (1) is cylindric box-beam structure, and the bottom is empty van (13); At least connect row's end water device on the cofferdam, row's end water device mainly includes vacuum pump (9) and vacuum tank (5), vacuum pump (9) links to each other with vacuum tank (5) by steel wire tube (11), blast gate (8), vacuum tank (5) links to each other with draining galvanized pipe (3) by draining steel wire tube (4), water valve (6), and draining galvanized pipe (3) intake is installed in the cofferdam bottom empty van (13).
2. the anhydrous maintenance of underwater concrete engineering according to claim 1 cofferdam is characterized in that: water device at least two covers at the bottom of the coconnected row in cofferdam, draining galvanized pipe (3) intake is distributed in the cofferdam bottom empty van (13).
3. the anhydrous maintenance of underwater concrete engineering according to claim 1 cofferdam is characterized in that: cat ladder (10) is installed on the barrel of cofferdam.
4. the anhydrous maintenance of underwater concrete engineering according to claim 1 cofferdam, it is characterized in that: the cofferdam of box-beam structure is divided into some joints, the dull and stereotyped sealing of internode, bottom and concrete joint synapsis have L type water stop rubber (12).
5. the anhydrous maintenance of underwater concrete engineering according to claim 1 cofferdam is characterized in that: connect water valve (7) on the vacuum tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080320 CN2730944Y (en) | 2004-10-13 | 2004-10-13 | Water free examining and repairing cofferdam for underwater concrete construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420080320 CN2730944Y (en) | 2004-10-13 | 2004-10-13 | Water free examining and repairing cofferdam for underwater concrete construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2730944Y true CN2730944Y (en) | 2005-10-05 |
Family
ID=35051282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420080320 Expired - Fee Related CN2730944Y (en) | 2004-10-13 | 2004-10-13 | Water free examining and repairing cofferdam for underwater concrete construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2730944Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837511B (en) * | 2006-04-07 | 2010-06-02 | 上海市政工程设计研究总院 | Double-rowed cofferdam and method for manufacturing the same |
| CN102199923A (en) * | 2011-03-14 | 2011-09-28 | 江苏省淮河入海水道工程管理处 | Bottom water drainage system of open type underwater concrete detection device |
-
2004
- 2004-10-13 CN CN 200420080320 patent/CN2730944Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837511B (en) * | 2006-04-07 | 2010-06-02 | 上海市政工程设计研究总院 | Double-rowed cofferdam and method for manufacturing the same |
| CN102199923A (en) * | 2011-03-14 | 2011-09-28 | 江苏省淮河入海水道工程管理处 | Bottom water drainage system of open type underwater concrete detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |