CN210658383U - Silt deep water big rivers foundation ditch combination is strutted - Google Patents
Silt deep water big rivers foundation ditch combination is strutted Download PDFInfo
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- CN210658383U CN210658383U CN201921543037.3U CN201921543037U CN210658383U CN 210658383 U CN210658383 U CN 210658383U CN 201921543037 U CN201921543037 U CN 201921543037U CN 210658383 U CN210658383 U CN 210658383U
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Abstract
The utility model relates to a silt deep water heavy current foundation ditch combination is strutted, including setting up the steel-pipe pile cofferdam in the foundation ditch outside and setting up the steel sheet pile cofferdam in steel-pipe pile cofferdam inboard, the foundation ditch outside, the steel-pipe pile cofferdam forms first waterproof support outside the foundation ditch, and the steel-pipe pile cofferdam is including setting up at two rows of steel-pipe piles around the foundation ditch and setting up at two rows of steel-pipe pile inboard add muscle steel grating and waterproof layer, steel sheet pile cofferdam formation second way waterproof support, and steel sheet pile cofferdam is a plurality of consecutive steel sheet piles, and connects through fixed unit between the adjacent steel sheet pile, and steel-pipe pile cofferdam has compensatied the defect in steel sheet pile cofferdam under the heavy water velocity of flow, and construction process is simple, convenient.
Description
Technical Field
The utility model relates to a building engineering construction technical field especially relates to a silt deep water big rivers foundation ditch combination is strutted.
Background
In the construction of deep foundation pits of water pier sludge geological layers of bridge engineering in long and triangular regions, steel sheet piles, fore shaft steel pipe piles and steel box cofferdams are generally adopted for supporting, single steel sheet piles or fore shaft steel pipe pile cofferdams are difficult to fold in riverways with large flow velocity and poor in water stop effect, piping risks exist in excavation in the flow plastic-soft plastic sludge geological layers, the steel box cofferdams are harsh in processing and hoisting construction conditions, long in construction period and high in cost.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a stable in structure, the stagnant water is effectual, and construction convenience's silt deep water big rivers foundation ditch combination is strutted.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a silt deep water heavy current foundation ditch combination is strutted, is including setting up the steel-pipe pile cofferdam in the foundation ditch outside and setting up the steel sheet pile cofferdam in the steel-pipe pile cofferdam inboard, the foundation ditch outside, the steel-pipe pile cofferdam forms first waterproof support outside the foundation ditch, and the steel-pipe pile cofferdam is including setting up two rows of steel-pipe piles around the foundation ditch and setting up at two rows of steel-pipe pile inboard add muscle steel grating and waterproof layer, steel sheet pile cofferdam forms the second waterproof support, and steel sheet pile cofferdam is a plurality of steel sheet piles that link to each other in proper order, and connects through the fixed unit between the adjacent.
Preferably, the waterproof layer is waterproof geotextile.
Preferably, the steel pipe pile cofferdam is arranged at the position 3-3.5m of the outer side of the foundation pit.
Preferably, the center-to-center distance between the two rows of steel pipe piles is 1.2-1.5 m.
Preferably, the center-to-center distance between every two adjacent steel pipe piles in each row is 0.6-0.8 m.
The utility model discloses: in the water pier deep foundation pit construction of silt geology, the velocity of flow is not more than 3m/s, in the depth of water 10m, adopt steel-pipe pile and steel sheet pile combination cofferdam construction, form double-deck stagnant water, only earth support the system, the steel-pipe pile cofferdam forms first manger plate in the foundation ditch outside, fender mud supports the system, set up in the double steel-pipe pile and step up steel grating and waterproof geotechnological cloth, and fill up earth and tamp, realize conventional double-walled steel cofferdam function, in the steel-pipe pile cofferdam outside, the foundation ditch outside sets up the steel sheet pile cofferdam, the steel sheet pile cofferdam forms the second manger plate in the foundation ditch outside, fender mud supports.
The steel pipe pile cofferdam overcomes the defect of the steel plate pile cofferdam under the condition of high water flow velocity, and has simple construction process and convenient operation. Compare in conventional double-walled steel cofferdam preparation requirement height, it is big to sink into the degree of difficulty, but reuse, combination cofferdam steel sheet pile and steel-pipe pile not only can directly purchase or lease from market, and it is convenient, quick to insert to beat in addition, can pull out reuse after the construction is accomplished, can effectively practice thrift the expense.
Drawings
Fig. 1 is a schematic structural diagram 1 of the present invention.
Fig. 2 is a schematic structural diagram 2 of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The combined support for the sludge deep-water large-water-flow foundation pit comprises a steel pipe pile cofferdam 1 arranged outside the foundation pit and a steel plate pile cofferdam 2 arranged inside the steel pipe pile cofferdam 1 and outside the foundation pit, wherein the steel pipe pile cofferdam 1 forms a first waterproof support outside the foundation pit, the steel pipe pile cofferdam 1 comprises two rows of steel pipe piles 4 arranged around the foundation pit and a reinforced steel grating and a waterproof layer 3 arranged inside the two rows of steel pipe piles 4, the leakage is effectively prevented, the blocking force is enhanced, the steel plate pile cofferdam 2 forms a second waterproof support, the steel plate pile cofferdam 2 is a plurality of steel plate piles 5 connected in sequence, and the adjacent steel plate piles 5 are connected through fixing units.
In the velocity of flow is not more than 3m/s, in the depth of water 10m, in the deep foundation pit construction of the aquatic mound of silt geology, adopt steel-pipe pile 4 and 5 combination cofferdams construction of steel sheet pile, form double-deck stagnant water, only earth support system, the steel-pipe pile cofferdam forms first manger plate in the foundation ditch outside, fender mud support system, set up in the double steel-pipe pile and step up steel grating and waterproof geotechnological cloth, and fill up the soil and tamp, realize conventional double-walled steel cofferdam function, in the steel-pipe pile cofferdam outside, the foundation ditch outside sets up the steel sheet pile cofferdam, the steel sheet pile cofferdam forms second manger plate in the foundation ditch outside.
The steel pipe pile cofferdam overcomes the defect of the steel plate pile cofferdam under the condition of high water flow velocity, and has simple construction process and convenient operation. Compare in conventional double-walled steel cofferdam preparation requirement height, it is big to sink into the degree of difficulty, but reuse, combination cofferdam steel sheet pile and steel-pipe pile not only can directly purchase or lease from market, and it is convenient, quick to insert to beat in addition, can pull out reuse after the construction is accomplished, can effectively practice thrift the expense.
The steel pipe pile cofferdam 1 is arranged at the position 3m away from the outer side of the foundation pit; the center distance between the two rows of steel pipe piles 4 is 1.5 m; the center distance between every two adjacent steel pipe piles 4 in each row is 0.6 m.
The utility model discloses the concrete way is:
firstly, erecting two rows of steel pipe piles 4 at a position 3m away from four sides of a foundation pit in water, selecting the steel pipe piles 4 with the diameter of 0.3m from the steel pipe piles 4, wherein the center distance between every two adjacent steel pipe piles 4 in each row is 0.6m, the center distance between every two adjacent steel pipe piles 4 in each row is 1.5m, then arranging a reinforced steel grating at the inner sides of the two rows of steel pipe piles 4, further using waterproof geotextile to enclose and block, filling and tamping the inner sides of the two rows of steel pipe piles 4 to manufacture a first water retaining protection system, and then driving a Larsen IV type steel plate pile cofferdam 2 at a position 1.5m inside the steel pipe pile cofferdam and outside the foundation pit to form a second water retaining and mud retaining support system.
It should be noted that the above embodiments are merely representative examples of the present invention. The utility model can also have a plurality of deformations. Any simple modification, equivalent changes and modifications made to the above embodiments according to the essence of the present invention should be considered as belonging to the protection scope of the present invention.
Claims (5)
1. The utility model provides a silt deep water big rivers foundation ditch combination is strutted which characterized in that: the steel pipe pile cofferdam comprises a steel pipe pile cofferdam arranged outside a foundation pit and a steel plate pile cofferdam arranged inside the steel pipe pile cofferdam and outside the foundation pit, wherein the steel pipe pile cofferdam forms a first waterproof support outside the foundation pit, the steel pipe pile cofferdam comprises two rows of steel pipe piles arranged around the foundation pit and a reinforced steel grating and a waterproof layer arranged inside the two rows of steel pipe piles, the steel plate pile cofferdam forms a second waterproof support, the steel plate pile cofferdam is a plurality of steel plate piles which are sequentially connected, and the adjacent steel plate piles are connected through a fixing unit.
2. The combination support for the silt deep water large water flow foundation pit as claimed in claim 1, wherein the waterproof layer is waterproof geotextile.
3. The combined support for the foundation pit with the deep water and the large water flow of the sludge as claimed in claim 1, wherein the steel pipe pile cofferdam is arranged at a position 3-3.5m outside the foundation pit.
4. The silt deep water large current foundation pit combined support of claim 1, wherein the center-to-center distance between the two rows of steel pipe piles is 1.2-1.5 m.
5. The combined support for the foundation pit with the sludge deep water and the large water flow as claimed in claim 1, wherein the center-to-center distance between every two adjacent steel pipe piles in each row is 0.6-0.8 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921543037.3U CN210658383U (en) | 2019-09-17 | 2019-09-17 | Silt deep water big rivers foundation ditch combination is strutted |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921543037.3U CN210658383U (en) | 2019-09-17 | 2019-09-17 | Silt deep water big rivers foundation ditch combination is strutted |
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| CN210658383U true CN210658383U (en) | 2020-06-02 |
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| CN201921543037.3U Active CN210658383U (en) | 2019-09-17 | 2019-09-17 | Silt deep water big rivers foundation ditch combination is strutted |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663547A (en) * | 2020-06-19 | 2020-09-15 | 伍永伶 | Bridge pier cofferdam device for bridge construction |
| CN114411782A (en) * | 2022-01-17 | 2022-04-29 | 中铁十四局集团第二工程有限公司 | Waterproof construction method for PC (polycarbonate) combined pile enclosure structure |
| CN115613583A (en) * | 2022-12-15 | 2023-01-17 | 中国海洋大学 | Offshore area rock foundation pit and construction method |
-
2019
- 2019-09-17 CN CN201921543037.3U patent/CN210658383U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111663547A (en) * | 2020-06-19 | 2020-09-15 | 伍永伶 | Bridge pier cofferdam device for bridge construction |
| CN111663547B (en) * | 2020-06-19 | 2022-03-18 | 伍永伶 | Bridge pier cofferdam device for bridge construction |
| CN114411782A (en) * | 2022-01-17 | 2022-04-29 | 中铁十四局集团第二工程有限公司 | Waterproof construction method for PC (polycarbonate) combined pile enclosure structure |
| CN115613583A (en) * | 2022-12-15 | 2023-01-17 | 中国海洋大学 | Offshore area rock foundation pit and construction method |
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