CN212452708U - Water stop structure for construction of low pile cap of shallow covering layer area - Google Patents
Water stop structure for construction of low pile cap of shallow covering layer area Download PDFInfo
- Publication number
- CN212452708U CN212452708U CN202020998939.2U CN202020998939U CN212452708U CN 212452708 U CN212452708 U CN 212452708U CN 202020998939 U CN202020998939 U CN 202020998939U CN 212452708 U CN212452708 U CN 212452708U
- Authority
- CN
- China
- Prior art keywords
- wall body
- steel cofferdam
- construction
- pile
- concrete
- 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.)
- Active
Links
Images
Landscapes
- Revetment (AREA)
Abstract
The utility model relates to a stagnant water structure that is used for low pile cap construction in shallow overburden district, including the concrete barricade, insert the basement rock after the concrete barricade lower extreme passes the overburden downwards, even there is the steel cofferdam wall body of tube-shape on the concrete barricade, the outside of steel cofferdam wall body is water, and the steel cofferdam wall body is higher than the horizontal plane, and the inboard of steel cofferdam wall body is equipped with a plurality of upper and lower range upon range of purlins that enclose, is equipped with a plurality of horizontally interior supports in the steel cofferdam wall body, all with enclosing purlin fixed connection in interior support both ends, is equipped with the cushion cap in the concrete barricade. The utility model discloses combine firmly and closely knit, stability good with the basement rock, the stagnant water effect is good, simultaneously, concrete barricade intensity is high, and the prevention of seepage is effectual, so need not a large amount of back cover concrete material, simplified construction process.
Description
Technical Field
The utility model relates to a bridge foundation construction field in waters especially relates to a stagnant water structure that is used for low pile cap construction of shallow overburden district.
Background
The low pile cap of the bridge in the water area refers to an underwater cap with the bottom surface below a river bed, and during construction, a special water stopping structure needs to be provided to ensure a dry operation environment. The commonly used water stop structure for the construction of the low pile cap of the water area bridge comprises a steel plate pile cofferdam, a lock catch steel pipe pile cofferdam, a single-arm steel cofferdam, a double-arm steel cofferdam, a concrete cofferdam and the like. Under the geological condition of a shallow covering layer, the steel sheet pile cofferdam and the lock catch steel pipe pile cofferdam are difficult to drive into hard bedrock, and the anchoring depth is insufficient, so the structural stability is poor; the single-arm steel cofferdam and the double-arm steel cofferdam have good overall stability, but need a large amount of bottom sealing concrete for water sealing, and under the conditions of inclined, rugged and multi-broken stone surface of bedrock, the lower edge of the cofferdam cannot be tightly attached to the bedrock, so that the leakage of the bottom sealing concrete is easily caused, and the water sealing effect is influenced; the concrete cofferdam is high in strength, good in stability and good in water stopping effect, but needs a large amount of concrete materials, is large in later-stage dismantling difficulty, cannot be recycled, and has a large influence on the underwater environment.
Disclosure of Invention
The utility model discloses aim at solving prior art not enough, and provide a stagnant water structure that is used for shallow overburden district low pile cap to be under construction.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme: the utility model provides a stagnant water structure that is used for low pile cushion cap construction of shallow overburden district, including the concrete barricade, insert the basement rock after the concrete barricade lower extreme passes the overburden downwards, even there is the steel cofferdam wall body of tube-shape on the concrete barricade, the outside of steel cofferdam wall body is water, and steel cofferdam wall body is higher than the horizontal plane, the inboard of steel cofferdam wall body is equipped with a plurality of upper and lower range upon range of purlins, be equipped with a plurality of horizontally interior supports in the steel cofferdam wall body, interior support both ends all with purlin fixed connection, be equipped with the cushion cap in the concrete barricade, the cushion.
The concrete retaining wall comprises a plurality of meat-type piles, a plurality of vegetable-type piles and a crown beam, wherein the meat-type piles and the vegetable-type piles are alternately fixed on the bottom surface of the crown beam, pile reinforcing soil is filled between adjacent meat-type piles and vegetable-type piles, the pile reinforcing soil is located on the covering layer, the lower ends of the meat-type piles and the vegetable-type piles downwards penetrate through the covering layer and then are inserted into the bedrock, and the top surface of the crown beam is fixedly connected with the wall body of the steel cofferdam.
The height of the covering layer positioned in the concrete retaining wall is less than that of the covering layer positioned outside the concrete retaining wall.
The inner support comprises a plurality of first inner supports and a plurality of second inner supports, the first inner supports and the second inner supports are vertically connected into a whole, and two ends of the first inner supports and the second inner supports are fixedly connected with the surrounding purlin.
The meat-bearing pile is a reinforced concrete filling pile.
The plain pile is a concrete cast-in-place pile.
The lower edge of the wall body of the steel cofferdam is poured on the top of the concrete retaining wall.
The utility model has the advantages that: the utility model discloses combine firmly and closely knit, stability good with the basement rock, the stagnant water effect is good, simultaneously, concrete barricade intensity is high, and the prevention of seepage is effectual, so need not a large amount of back cover concrete material, simplified construction process.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a schematic view 1/4 of the present invention;
FIG. 4 is a schematic view showing the relationship among meat piles, vegetable piles and reinforced soil between piles;
in the figure: 1-concrete retaining wall; 11-meat pilings; 12-plain stakes; 13-reinforcing soil among piles; 14-a crown beam; 2-steel cofferdam wall body; 3-enclosing purlin; 4-inner support; 5-a bearing platform; 6-bedrock; 7-a cover layer; 8-water;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
as shown in fig. 1 to 4, a water stop structure for low pile cap construction of a shallow covering area region comprises a concrete retaining wall 1, wherein the lower end of the concrete retaining wall 1 downwards penetrates through a covering layer 7 and then is inserted into a bedrock 6, the upper end of the concrete retaining wall 1 is connected with a cylindrical steel cofferdam wall body 2, the outer side of the steel cofferdam wall body 2 is water 8, the steel cofferdam wall body 2 is higher than the horizontal plane, a plurality of upper and lower overlapped surrounding purlins 3 are arranged on the inner side of the steel cofferdam wall body 2, a plurality of horizontal inner supports 4 are arranged in the steel cofferdam wall body 2, two ends of each inner support 4 are fixedly connected with the surrounding purlins 3, a bearing cap 5 is arranged in the concrete retaining wall 1, and. The concrete retaining wall 1 is passed through the overburden 7 and embedded in the bedrock 6, and can be firmly combined with the bedrock 6. The lower edge of the wall body 2 of the steel cofferdam is poured on the top of the concrete retaining wall 1, the steel cofferdam and the concrete retaining wall are connected into a whole after the concrete is hardened, and the interior of the steel cofferdam is used as an operation space for constructing the bearing platform 5. The steel cofferdam wall body 2 is reinforced by the enclosing purlin 3 and the inner support 4 which are fixed on the inner side so as to resist the pressure of water 8 on the outer side.
The concrete retaining wall 1 comprises a plurality of meat-type piles 11, a plurality of vegetable-type piles 12 and a crown beam 14, wherein the meat-type piles 11 and the vegetable-type piles 12 are alternately fixed on the bottom surface of the crown beam 14, pile reinforcing soil 13 is filled between every two adjacent meat-type piles 11 and the vegetable-type piles 12, the pile reinforcing soil 13 is located on a covering layer 7, the lower ends of the meat-type piles 11 and the vegetable-type piles 12 downwards penetrate through the covering layer 7 and then are inserted into a bedrock 6, and the top surface of the crown beam 14 is fixedly connected with a steel cofferdam wall body 2. The meat-bearing pile 11 is a reinforced concrete cast-in-place pile, is embedded in a weathered or slightly weathered bedrock for fixation, and is a main anti-overturning structure. The inter-pile reinforced soil 13 is a soil body reinforced between the meat-bearing piles 11 and the vegetable-bearing piles 12 by a perforated pipe grouting technology, and has high strength and a good anti-seepage effect. The plain pile 12 is a concrete cast-in-place pile, and is embedded into bedrock for fixation. The meat piles 11 and the vegetable piles 12 are arranged in a staggered mode according to a certain distance.
The height of the cladding 7 within the concrete wall 1 is less than the height of the cladding 7 outside the concrete wall 1.
The inner support 4 comprises a plurality of first inner supports and a plurality of second inner supports, the first inner supports and the second inner supports are vertically connected into a whole, and two ends of the first inner supports and two ends of the second inner supports are fixedly connected with the surrounding purlin 3.
The construction of the structure comprises the following steps:
a, constructing the concrete retaining wall 1. Firstly, constructing meat-bearing piles 11 and vegetable-bearing piles 12 in sequence at designed positions, then reinforcing soil bodies among the piles by using a floral tube grouting technology to form reinforced soil 13 among the piles with better seepage-proofing performance, and finally constructing crown beams 14 in a dry season.
b, before the initial setting of the concrete of the crown beam 14, installing a steel cofferdam wall body to form a complete maintenance structure.
And c, mounting a surrounding purlin 3 and an inner support 4 to reinforce the wall body 2 of the steel cofferdam.
d, pumping out water on the inner side of the structure to provide a dry working environment.
e cleaning the inner covering layer 6 and constructing the bearing platform 5 structure.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above embodiments, and various improvements made by the method concept and technical solution of the present invention or directly applied to other occasions without improvement are all within the protection scope of the present invention.
Claims (7)
1. The utility model provides a stagnant water structure that is used for low pile cushion cap construction of shallow covering zone district, a serial communication port, including concrete retaining wall (1), insert basement rock (6) after concrete retaining wall (1) lower extreme passes overburden (7) downwards, even there is steel cofferdam wall body (2) of tube-shape on concrete retaining wall (1), the outside of steel cofferdam wall body (2) is water (8), and steel cofferdam wall body (2) are higher than the horizontal plane, the inboard of steel cofferdam wall body (2) is equipped with a plurality of range upon range of purlinly from top to bottom enclosing purlin (3), be equipped with a plurality of horizontally interior supports (4) in steel cofferdam wall body (2), interior support (4) both ends all with enclosing purlin (3) fixed connection, be equipped with cushion cap (5) in concrete retaining wall (1), cushion cap (5) are fixed on overburden (7).
2. The water stop structure for the low pile cap construction of the shallow covering zone area is characterized in that the concrete retaining wall (1) comprises a plurality of meat piles (11), a plurality of vegetable piles (12) and a crown beam (14), the meat piles (11) and the vegetable piles (12) are alternately fixed on the bottom surface of the crown beam (14), inter-pile reinforcing soil (13) is filled between the adjacent meat piles (11) and the vegetable piles (12), the inter-pile reinforcing soil (13) is positioned on the covering layer (7), the lower ends of the meat piles (11) and the vegetable piles (12) penetrate through the covering layer (7) downwards and then are inserted into a base rock (6), and the top surface of the crown beam (14) is fixedly connected with a steel cofferdam wall body (2).
3. The water stopping structure for the construction of the low pile cap of the shallow covered area according to claim 1, wherein the height of the covering layer (7) positioned inside the concrete retaining wall (1) is less than the height of the covering layer (7) positioned outside the concrete retaining wall (1).
4. The water stopping structure for the construction of the low pile cap of the shallow covering area according to the claim 1, characterized in that the inner support (4) comprises a plurality of first inner supports and a plurality of second inner supports, the first inner supports and the second inner supports are vertically connected into a whole, and both ends of the first inner supports and the second inner supports are fixedly connected with the surrounding purlin (3).
5. The water stop structure for the low pile cap construction of the shallow covered area according to claim 2, characterized in that the meat pile (11) is a reinforced concrete cast-in-place pile.
6. The water stopping structure for the construction of the low pile cap of the shallow covered area according to the claim 1, characterized in that the plain pile (12) is a concrete cast-in-place pile.
7. The water stopping structure for the construction of the low pile cap of the shallow covered area according to claim 1, wherein the lower edge of the steel cofferdam wall body (2) is poured on the top of the concrete retaining wall (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020998939.2U CN212452708U (en) | 2020-06-03 | 2020-06-03 | Water stop structure for construction of low pile cap of shallow covering layer area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020998939.2U CN212452708U (en) | 2020-06-03 | 2020-06-03 | Water stop structure for construction of low pile cap of shallow covering layer area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212452708U true CN212452708U (en) | 2021-02-02 |
Family
ID=74477751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020998939.2U Active CN212452708U (en) | 2020-06-03 | 2020-06-03 | Water stop structure for construction of low pile cap of shallow covering layer area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212452708U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636451A (en) * | 2020-06-03 | 2020-09-08 | 中国建筑第六工程局有限公司 | Water stop structure for construction of low pile cap of shallow covering layer area |
-
2020
- 2020-06-03 CN CN202020998939.2U patent/CN212452708U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111636451A (en) * | 2020-06-03 | 2020-09-08 | 中国建筑第六工程局有限公司 | Water stop structure for construction of low pile cap of shallow covering layer area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103774675B (en) | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof | |
| CN103074898A (en) | Multi-row pile foundation pit support structure and construction method thereof | |
| CN104314042B (en) | Adopt the levee construction method of pile formula case barrel structure | |
| CN211200426U (en) | Anti-sliding supporting and retaining structure for miniature steel pipe pile retaining wall | |
| CN210439302U (en) | Foundation structure formed by basement and supporting piles | |
| CN212452708U (en) | Water stop structure for construction of low pile cap of shallow covering layer area | |
| CN209923935U (en) | Co-location combined pile wall supporting structure in upper-soft and lower-hard stratum | |
| CN107675698B (en) | Larsen steel sheet pile underwater cofferdam closing structure and operation method | |
| CN111636451A (en) | Water stop structure for construction of low pile cap of shallow covering layer area | |
| CN112538860A (en) | Construction method of high-water-level complex stratum bottom-seal-free concrete lock catch steel pipe pile cofferdam | |
| CN210288408U (en) | Foundation pit supporting structure | |
| CN106400814A (en) | Foundation pit supporting method | |
| CN2892973Y (en) | Strong rammer replacement parapet structure | |
| CN216194845U (en) | Pebble covering layer steel sheet pile cofferdam system | |
| CN211447015U (en) | H-shaped anti-slide pile plate wall | |
| CN114622574A (en) | Water-rich cast-fill deep foundation pit water-intercepting excavation supporting method and supporting device | |
| CN211498893U (en) | Cofferdam combining permanent structure pile foundation and temporary steel sheet pile | |
| CN212561534U (en) | Earth-rock binary foundation pit support structure for coastal rich water environment | |
| CN201883449U (en) | Sea wall structure of compound pile | |
| CN210917310U (en) | Disposal drainage consolidation processing system for hydraulic filling deep and thick soft foundation | |
| CN205604261U (en) | Prefabricated bamboo cavity side slope supporting construction | |
| CN109853482A (en) | A kind of method of Concrete Dam deep weathering slot processing | |
| CN213978992U (en) | Supporting construction of shallow foundation ditch in deep soft soil layer | |
| CN216041250U (en) | Cofferdam for wading engineering | |
| CN209669795U (en) | A kind of compound waterwall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |