CN206570826U - A kind of inland river blast cofferdam - Google Patents
A kind of inland river blast cofferdam Download PDFInfo
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- CN206570826U CN206570826U CN201720128720.5U CN201720128720U CN206570826U CN 206570826 U CN206570826 U CN 206570826U CN 201720128720 U CN201720128720 U CN 201720128720U CN 206570826 U CN206570826 U CN 206570826U
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- cofferdam
- blast
- bag
- reinforcement cage
- riverbed
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Abstract
The utility model discloses a kind of inland river blast cofferdam, the problem of existing cofferdam water retaining ability is with setting and removing difficult during the construction bridges pile foundation in existing river is solved.Including riverbed（1）, in riverbed（1）On be provided with bed course（2）, in bed course（2）On be provided with cofferdam steel reinforcement cage, in cofferdam, the both sides of steel reinforcement cage are provided with diagonal brace（6）, front-seat blast bag is respectively arranged with the steel reinforcement cage of cofferdam（7）With heel row blast bag（8）, in front-seat blast bag（7）With heel row blast bag（8）Between be provided with antiseepage soil layer（9）, in riverbed（1）Outside be provided with mortar pump（12）, mortar pump（12）Pass through the sand inlet on blast pipe and blast bag（11）It is connected together.The utility model takes full advantage of the existing material of job site, it is easy to operate, and cofferdam constructs convenient and simple, particularly facilitates and removes.
Description
Technical field
The utility model is related to a kind of cofferdam blocked in the bridge construction in existing river to river.
Background technology
In the bridge construction in existing river, generally require cofferdam and block river, in favor of the construction of bridge pile foundation.Cofferdam
It is general to use earth rock cofferdam, but it is built and Demolition Construction quantities is big, and section water-retaining capacity is poor, can be collapsed in work progress
Collapse and the phenomenon that seeps water, construction maintenance is difficult, and pollution is produced to water quality is long-term.Also have using Larsen steel sheet-pile cofferdam, but exist
Investment is big, requires harsh to construction site, and riverbed geology there are certain requirements, and river conditions can not meet above-mentioned requirements, cause
Cofferdam construction is set not carry out.
The content of the invention
The utility model provides a kind of inland river blast cofferdam, solves existing during the construction bridges pile foundation in existing river
Cofferdam water retaining ability and the technical problem for setting and removing difficulty.
The utility model is to solve above technical problem by the following technical programs：
A kind of inland river blast cofferdam, including riverbed, are provided with bed course on riverbed, and cofferdam reinforcing bar is provided with bed course
Cage, in cofferdam, the both sides of steel reinforcement cage are provided with diagonal brace, and front-seat blast bag and heel row blast are respectively arranged with the steel reinforcement cage of cofferdam
Bag, is provided with antiseepage soil layer between front-seat blast bag and heel row blast bag, mortar pump, mortar pump is provided with the outside of riverbed
It is connected together by blast pipe with the sand inlet on blast bag.
Cofferdam steel reinforcement cage is made up of vertical steel pipe, longitudinal steel pipe and horizontal steel-pipe welding.
The utility model takes full advantage of the existing material of job site, it is easy to operate, and cofferdam constructs convenient and simple, especially
It is convenient remove.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
A kind of inland river blast cofferdam, including riverbed 1, are provided with bed course 2 on riverbed 1, and cofferdam steel is provided with bed course 2
Muscle cage, in cofferdam, the both sides of steel reinforcement cage are provided with diagonal brace 6, and front-seat blast bag 7 and heel row are respectively arranged with the steel reinforcement cage of cofferdam
Blast bag 8, is provided with antiseepage soil layer 9 between front-seat blast bag 7 and heel row blast bag 8, the outside in riverbed 1 is provided with mortar
Pump 12, mortar pump 12 is connected together by blast pipe with the sand inlet 11 on blast bag.
Cofferdam steel reinforcement cage is welded to form by vertical steel pipe 3, longitudinal steel pipe 4 and horizontal steel pipe 5, is lifted into after being welded
On river surface 10, progress assembling splicing is sunk in river, and after being fixed by diagonal brace 6, first front-seat blast bag 7 is placed into
Cofferdam steel reinforcement cage left part, mortar pump 12 is blown into mortar by blast pipe and sand inlet 11 into first front-seat blast bag 7, makes it
Heave and sink to river bed, the blast of second front-seat blast bag is then carried out again, form front-seat blast bag wall and heel row blast
Bag wall, and antiseepage soil layer 9 is set between two row's blast bag walls, complete cofferdam so as to construct.When needing to remove cofferdam, only need
The broken blast bag of bucket, with the outflow of mortar and washing away for water in blast bag, two row's blast bag walls disappear, and hang out steel reinforcement cage, you can
Complete the dismounting in cofferdam.
Claims (2)
1. a kind of inland river blast cofferdam, including riverbed（1）, in riverbed（1）On be provided with bed course（2）, in bed course（2）On be provided with
Cofferdam steel reinforcement cage, in cofferdam, the both sides of steel reinforcement cage are provided with diagonal brace（6）, it is characterised in that set respectively in the steel reinforcement cage of cofferdam
There is front-seat blast bag（7）With heel row blast bag（8）, in front-seat blast bag（7）With heel row blast bag（8）Between be provided with antiseepage soil
Layer（9）, in riverbed（1）Outside be provided with mortar pump（12）, mortar pump（12）Pass through the sand inlet on blast pipe and blast bag
（11）It is connected together.
2. a kind of inland river blast cofferdam according to claim 1, it is characterised in that cofferdam steel reinforcement cage is by vertical steel pipe
（3）, longitudinal steel pipe（4）With horizontal steel pipe（5）It is welded to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128720.5U CN206570826U (en) | 2017-02-13 | 2017-02-13 | A kind of inland river blast cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720128720.5U CN206570826U (en) | 2017-02-13 | 2017-02-13 | A kind of inland river blast cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206570826U true CN206570826U (en) | 2017-10-20 |
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ID=60058907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720128720.5U Active CN206570826U (en) | 2017-02-13 | 2017-02-13 | A kind of inland river blast cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206570826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756831A (en) * | 2021-09-15 | 2021-12-07 | 中国二十二冶集团有限公司 | Construction method for sand blowing and filling between main pipeline and sleeve |
-
2017
- 2017-02-13 CN CN201720128720.5U patent/CN206570826U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756831A (en) * | 2021-09-15 | 2021-12-07 | 中国二十二冶集团有限公司 | Construction method for sand blowing and filling between main pipeline and sleeve |
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