CN202706045U - Circular cofferdam - Google Patents
Circular cofferdam Download PDFInfo
- Publication number
- CN202706045U CN202706045U CN 201220322013 CN201220322013U CN202706045U CN 202706045 U CN202706045 U CN 202706045U CN 201220322013 CN201220322013 CN 201220322013 CN 201220322013 U CN201220322013 U CN 201220322013U CN 202706045 U CN202706045 U CN 202706045U
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- CN
- China
- Prior art keywords
- cofferdam
- steel sheet
- purlin
- circular
- inner support
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a circular cofferdam. The circular cofferdam comprises a group of steel sheet piles and a cofferdam base, the steel sheet piles and the cofferdam base surround the periphery of a cushion cap, the steel sheet piles are annularly distributed along the periphery of the cushion cap to form a barrel-shaped cofferdam wall, roots of the steel sheet piles extend to a position below the cofferdam base, tops of the steel sheet piles are higher than the cushion cap, circuit purlins are tightly attached to the inner side walls of the group of steel sheet piles, the circuit purlins are sequentially annularly distributed from top to bottom at intervals along the circumferential ring of the cofferdam wall, the interiors of circle planes where a first circuit purlin and a third circuit purlin are located respectively are provided with inner supports which are fixedly connected with the inner wall of the cofferdam, the inner supports are rectangular frames which are defined by steel tubes, and the inner supports are parallel to the cofferdam base. The circular cofferdam has the advantages that the stress is uniform, the safety performance is good, the water leakage is absent, the required quantity of the inner supports of the circuit purlins is reduced, the cost is saved, the operating space during foundation excavation is greatly increased, the construction difficulty is reduced, and simultaneously the project cost can be lowered.
Description
Technical field
The utility model relates to the construction field that builds a bridge, and refers to particularly a kind of circular cofferdam.
Background technology
The steel that should belong to that is most widely used in bridge engineering construction in the past encloses the purlin construction, the inner support of enclosing the purlin employing in cofferdam is more in the prior art, has taken larger built-in function space, and steel using amount is larger, also increase accordingly the input of engineering cost, and increased difficulty of construction.
Summary of the invention
The purpose of this utility model provides a kind of construction, safe and reliable, economic and practical circular cofferdam of being beneficial to.
To achieve these goals, the circular cofferdam that the utility model is designed, comprise the one group of steel sheet pile and the cofferdam substrate that are enclosed in the cushion cap periphery, its special character is: described steel sheet pile is arranged to tubular cofferdam wall along the cushion cap circumferential annular, the root of described steel sheet pile extends to below the substrate of cofferdam, and the top of steel sheet pile is higher than cushion cap; Inside wall of being close to this group steel sheet pile is provided with and encloses purlin, described enclose purlin along wall border, cofferdam from top to bottom successively the interval be circular layout; Described first encloses purlin and the 3rd road and encloses purlin and also be provided with the inner support that is fixedly connected with the cofferdam inwall in the disk at place respectively, and described inner support is that the steel pipe rectangular frame of enclosing and itself and cofferdam substrate are arranged in parallel.
As a kind of preferred version, the orthography of summit P on the vertical ground direction of described inner support connects successively and is octagon.
As another preferred version, described inner support is that steel pipe is enclosed square frame, and described inner support and cofferdam substrate are arranged in parallel, and the orthography of summit P on the vertical ground direction of described inner support connects successively and be octagon.
Further, it is that two casees chambers, square-section annular steel encloses purlin that described first encloses purlin, and described second encloses purlin, the 3rd road and encloses purlin, the 4th road and enclose purlin and the 5th road and enclose purlin and be square-section C25 reinforced concrete circular and enclose purlin.
The utility model has the advantage of: this circular cofferdam, stressed even, security performance is good, there is not the situation of leaking, reduced the requirement of the inner support of enclosing purlin, save cost, difficulty of construction has been reduced in operating space when greatly having increased foundation excavation, can reduce again the input of engineering cost simultaneously.
Description of drawings:
Fig. 1 is structural representation of the present utility model.
Fig. 2 is plan structure schematic diagram of the present utility model.
Among the figure: 1, cushion cap, 2, steel sheet pile, 3, the cofferdam substrate, 4, the cofferdam wall, 5, enclose purlin, 51, first encloses purlin, 52, second encloses purlin, the 53, the 3rd road encloses purlin, and the 54, the 4th road encloses purlin, and the 55, the 5th road encloses purlin, and 6, inner support.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Circular cofferdam as shown in Figure 1, comprise the one group of steel sheet pile 2 and the cofferdam substrate 3 that are enclosed in cushion cap 1 periphery, steel sheet pile 2 is arranged to tubular cofferdam wall 4 along cushion cap 1 circumferential annular, and the root of steel sheet pile 2 extends to the cofferdam substrate below 3, and the top of steel sheet pile 2 is higher than cushion cap 1; Inside wall of being close to this group steel sheet pile 2 is provided with and encloses purlin 5, enclose purlin 5 along wall border, cofferdam from top to bottom successively the interval be circular layout; First encloses purlin 51 and the 3rd road and encloses purlin 53 and also be provided with the inner support 6 that is fixedly connected with the cofferdam inwall in the disk at place respectively, and the rectangular frame that inner support 6 is enclosed for steel pipe and itself and cofferdam substrate 3 are arranged in parallel; The orthography of summit P on the vertical ground direction of inner support 6 as shown in Figure 2 connects successively and is octagon; A kind of preferred embodiment is the square frame that inner support 6 is enclosed for steel pipe, and inner support 6 is arranged in parallel with cofferdam substrate 3, and the orthography of summit P on the vertical ground direction of inner support 6 connects successively and be octagon; First encloses purlin 51 and encloses purlin for two casees chambers, square-section annular steel, and described second encloses purlin 52, the 3rd road and encloses purlin 53, the 4th road and enclose purlin 54 and the 5th road and enclose purlin 55 and be square-section C25 reinforced concrete circular and enclose purlin.
First encloses purlin 51 and encloses purlin for two casees chambers, 400m δ 20mm square-section annular steel, and from 1.5 meters of top open heights, inner support 6 is φ 300 δ 5mm steel pipes, is the octagonal star structure; Second encloses purlin 52 and encloses purlin for 1 * 1m rectangular reinforced concrete annular, and first encloses, and clear distance 1.8m does not add steel pipe support between the purlin 51; The 3rd road encloses purlin 53 and is 1 * 1m square-section, and the C25 reinforced concrete circular encloses purlin, and second encloses clear distance 1.7m between the purlin 52, and inner support is φ 300 δ 5mm steel pipes, is the octagonal star structure; The 4th road encloses purlin 54 and the 3rd road encloses clear distance 1.6m between the purlin 53, the 5th road encloses purlin 55 and the 4th road encloses clear distance 1m between the purlin 54, is 1 * 1m rectangular reinforced concrete annular steel and encloses purlin, does not add steel pipe support.
Claims (3)
1. circular cofferdam, comprise the one group of steel sheet pile (2) and the cofferdam substrate (3) that are enclosed in cushion cap (1) periphery, it is characterized in that: described steel sheet pile (2) is arranged to tubular cofferdam wall (4) along cushion cap (1) circumferential annular, the root of described steel sheet pile (2) extends to below the cofferdam substrate (3), and the top of steel sheet pile (2) is higher than cushion cap (1); Inside wall of being close to this group steel sheet pile (2) is provided with and encloses purlin (5), described enclose purlin (5) along wall border, cofferdam from top to bottom successively the interval be circular layout; Described first encloses purlin (51) and the 3rd road and encloses purlin (53) and also be provided with the inner support (6) that is fixedly connected with the cofferdam inwall in the disk at place respectively, and the rectangular frame that described inner support (6) is enclosed for steel pipe and itself and cofferdam substrate (3) are arranged in parallel.
2. circular cofferdam according to claim 1, it is characterized in that: the orthography of summit (P) on the vertical ground direction of described inner support (6) connects successively and is octagon.
3. circular cofferdam according to claim 1, it is characterized in that: the square frame that described inner support (6) is enclosed for steel pipe, described inner support (6) is arranged in parallel with cofferdam substrate (3), and the orthography of summit (P) on the vertical ground direction of described inner support (6) connects successively and be octagon.
4.Circular cofferdam according to claim 1 and 2, it is characterized in that: described first encloses purlin (51) and encloses purlin for two casees chambers, square-section annular steel, and described second encloses purlin (52), the 3rd road and encloses purlin (53), the 4th road and enclose purlin (54) and the 5th road and enclose purlin (55) and be square-section C25 reinforced concrete circular and enclose purlin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322013 CN202706045U (en) | 2012-07-05 | 2012-07-05 | Circular cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220322013 CN202706045U (en) | 2012-07-05 | 2012-07-05 | Circular cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202706045U true CN202706045U (en) | 2013-01-30 |
Family
ID=47586363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220322013 Expired - Fee Related CN202706045U (en) | 2012-07-05 | 2012-07-05 | Circular cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202706045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727331A (en) * | 2015-03-04 | 2015-06-24 | 中交第二航务工程局有限公司 | Round end type steel sheet pile cofferdam structure with arch effect and construction method thereof |
| CN105714833A (en) * | 2016-03-01 | 2016-06-29 | 江苏东合南岩土科技股份有限公司 | Construction method of steel plate pile open caisson support |
-
2012
- 2012-07-05 CN CN 201220322013 patent/CN202706045U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727331A (en) * | 2015-03-04 | 2015-06-24 | 中交第二航务工程局有限公司 | Round end type steel sheet pile cofferdam structure with arch effect and construction method thereof |
| CN105714833A (en) * | 2016-03-01 | 2016-06-29 | 江苏东合南岩土科技股份有限公司 | Construction method of steel plate pile open caisson support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130130 Termination date: 20180705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |