CN211143098U - Extra-long steel sheet pile cofferdam suitable for deep water condition - Google Patents
Extra-long steel sheet pile cofferdam suitable for deep water condition Download PDFInfo
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- CN211143098U CN211143098U CN201921798385.5U CN201921798385U CN211143098U CN 211143098 U CN211143098 U CN 211143098U CN 201921798385 U CN201921798385 U CN 201921798385U CN 211143098 U CN211143098 U CN 211143098U
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Abstract
The utility model discloses an extra-long steel sheet pile cofferdam applicable to deepwater conditions, which comprises a concave steel sheet pile, the two sides of the concave steel sheet pile are integrally formed with buckles, one side of the concave steel sheet pile is tightly contacted with a channel steel purlin, a first through hole is arranged in the channel steel purlin, a steel pull rod is inserted in the first through hole, one end of the steel pull rod penetrates through the concave steel sheet pile, a threaded rod is integrally formed at one end of the steel pull rod, which is far away from the end penetrating through the concave steel sheet pile, two screw caps are screwed on the threaded rod, a foundation layer is laid above the concave steel sheet pile, a composite geotextile layer is laid above the foundation layer, a polishing layer is filled between the foundation layer and the composite geotextile layer, one side is provided with the rubble barricade in the middle of the top on compound geotechnological cloth layer, the one end that rubble barricade was kept away from on compound geotechnological cloth layer is inlayed and is had dry step shoulder stone. The occupation of land space is reduced, the construction period is shortened, and the construction cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the steel sheet pile cofferdam, concretely relates to extra long steel sheet pile cofferdam suitable for deep water condition.
Background
The deepwater cofferdam is always a difficult point for constructing the seawall and is also a key point for controlling quality, construction period and cost. In recent years, deep water cofferdams are constructed by basically adopting bottom steel suspension boxes or bottomless steel sleeve boxes, which are mature construction technologies with safety and guaranteed quality, but ship equipment such as large floating cranes and the like is required to be matched with underwater operation for construction, only buildings with small structural sizes are suitable, and the construction period is long. In view of the above, it is necessary to design an extra-long steel sheet pile cofferdam suitable for deep water conditions.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an extra long steel sheet pile cofferdam suitable for deep water condition to provide the deep water cofferdam construction that appears in solving above-mentioned background and basically adopt end steel lifting box or no end steel pouring jacket, this is safe, the mature construction technology of quality assurance, but needs ship equipment such as large-scale floating crane and underwater operation cooperation construction, only is suitable for the less building of structure size, the longer problem of time limit for a project moreover.
In order to achieve the above object, the utility model provides a following technical scheme: an ultra-long steel sheet pile cofferdam applicable to deepwater conditions comprises a concave steel sheet pile, wherein both sides of the concave steel sheet pile are integrally formed with buckles, one side of the concave steel sheet pile is tightly contacted with a channel steel purlin, a first through hole is arranged inside the channel steel purlin, a steel pull rod is inserted in the first through hole, one end of the steel pull rod penetrates through the concave steel sheet pile, a threaded rod is integrally formed at one end of the steel pull rod, which is far away from the end penetrating through the concave steel sheet pile, two screw caps are screwed on the threaded rod, a foundation layer is laid above the concave steel sheet pile, a composite geotextile layer is laid above the foundation layer, a polishing layer is filled between the foundation layer and the composite geotextile layer, one side is provided with the rubble barricade in the middle of the top on compound geotechnological cloth layer, the one end that rubble barricade was kept away from on compound geotechnological cloth layer is inlayed and is had dry step shoulder stone.
Preferably, the side surfaces of the concave steel sheet piles are symmetrically welded with reinforcing ribs.
Preferably, the lower end of the channel steel purlin is in close contact with a steel plate bracket, and the steel plate bracket is welded on the concave steel sheet pile.
Preferably, the equal in close contact with in the left and right sides that the channel-section steel encloses the purlin has the backing plate, the center department of backing plate has seted up the second via hole, the threaded rod runs through the backing plate through the second via hole, two one of backing plate is located nut and channel-section steel encloses between the purlin, and one is located the channel-section steel encloses between purlin and the concave type steel sheet pile.
Preferably, lifting holes are formed in two sides of the upper end of the concave steel sheet pile.
Preferably, the lower end of the concave steel sheet pile is provided with a sharp corner.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses compare with the construction of conventional cofferdam, take once only to accomplish double row pile weir operation of building, the building of cofferdam about can saving, throw the stone, build the dyke, geotechnological cloth is spread, processes such as foundation ditch drainage and cofferdam are clear away, reduce occupation of soil space to a very big degree again, the construction of more conventional cofferdam of time limit can correspondingly shorten more than 1/2, the construction cost is originally also reducible by a wide margin, steel sheet pile application advantage, high strength, safety, the environmental protection, light-duty, the ageing is stronger, the construction is simple, the time limit for a project is short, the durability is good, more than 50 years of life-span, the expense economy, interchangeability is good, can repeatedly use 58 times, reduce the requirement that occupies to soil.
Drawings
FIG. 1 is a structural diagram of the connection state of the concave steel sheet pile of the present invention;
FIG. 2 is a structural view of the channel steel purlin of the present invention;
FIG. 3 is a diagram of the splicing structure of the concave steel sheet pile of the present invention;
FIG. 4 is a structural diagram of the concave steel sheet pile of the present invention;
fig. 5 is a rear view of the cofferdam of the present invention;
fig. 6 is a construction flow chart of the present invention.
Reference numerals: 1. concave steel sheet piles; 2. buckling; 3. enclosing purlin by channel steel; 4. a first via hole; 5. a steel tie rod; 6. a threaded rod; 7. a nut; 8. reinforcing ribs; 9. a steel plate bracket; 10. a base plate; 11. a second via hole; 12. lifting holes; 13. sharp corners; 14. a ground layer; 15. compounding a geotextile layer; 16. polishing the stone layer; 17. Building a stone retaining wall; 18. and (5) dry-masonry of the road shoulder stone.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a technical scheme: as shown in fig. 3 and 4, the extra-long steel sheet pile cofferdam applicable to deep water conditions comprises a concave steel sheet pile 1, wherein reinforcing ribs 8 are symmetrically welded on the side surface of the concave steel sheet pile 1 for improving the strength, the rigidity of the extra-long steel sheet pile can be effectively enhanced, the distortion caused by an overlarge slenderness ratio is greatly improved, lifting holes 12 are formed in two sides of the upper end of the concave steel sheet pile 1 for facilitating lifting of the concave steel sheet pile 1, a sharp corner 13 is arranged at the lower end of the concave steel sheet pile 1 for facilitating insertion of the concave steel sheet pile 1 into the ground,
as shown in fig. 1, 2 and 5, buckles 2 are integrally formed on two sides of a concave steel sheet pile 1, a channel steel purlin 3 is closely contacted with one side of the concave steel sheet pile 1, a first through hole 4 is formed inside the channel steel purlin 3, a steel sheet bracket 9 is closely contacted with the lower end of the channel steel purlin 3 in order to improve the installation firmness of the channel steel purlin 3, the steel sheet bracket 9 is welded on the concave steel sheet pile 1, a steel pull rod 5 is inserted into the first through hole 4, one end of the steel pull rod 5 penetrates through the concave steel sheet pile 1, a threaded rod 6 is integrally formed at one end of the steel pull rod 5 far away from the concave steel sheet pile 1, two nuts 7 are screwed on the threaded rod 6, a foundation layer 14 is laid above the concave steel sheet pile 1, a composite geotextile layer 15 is laid above the foundation layer 14, a riprap layer 16 is filled between the foundation layer 14 and the composite geotextile layer 15, a retaining wall 17 is arranged on one side of the middle top end of, one end of the composite geotextile layer 15, which is far away from the masonry retaining wall 17, is embedded with dry masonry shoulder stones 18;
as shown in fig. 1 and 2, the channel-section steel encloses the equal in close contact with in the left and right sides of purlin 3 and has backing plate 10, and second via hole 11 has been seted up in the center department of backing plate 10, and threaded rod 6 runs through backing plate 10 through second via hole 11, and two backing plates 10 are located nut 7 and channel-section steel and enclose between the purlin 3, and one is located the channel-section steel and encloses between purlin 3 and concave steel sheet pile 1.
Cold-rolled steel sheet pile parameter table
The steel sheet pile OT series has the advantages that: the structural form is symmetrical, which is very favorable for repeated use; the pull rod, the inner support and other accessories are convenient to install, especially underwater. The thickness of the cross-section plate is uniform, and the pile sinking rigidity is good. Compared with the common steel sheet pile, the width is increased, the hoisting and pile sinking time is saved, the lock catches are reduced, and the water stopping performance of the cofferdam wall body is directly improved.
The details of the feeding mechanism are shown in the following table:
mechanical equipment input meter
The structure principle is as follows: in order to ensure that the pile driving is accurate, firstly, accurately measuring the positions of the pile axis and the corner point on the sea, and inserting an effect identification rod so that the pile driving ship can be berthed in place in advance;
entering a steel sheet pile and checking: after purchasing the steel sheet pile, arranging a specially-assigned person to carry out goods inspection and reception according to design requirements and quality regulations, and correcting deviation by using methods such as jacking by an oil jack or baking and the like due to local deformation generated in the transportation process;
entering a field by a piling ship machine: arranging matched hoisting, transporting and piling ship machines to perform downstream anchoring and positioning along the axis of the steel plate cofferdam pile;
and (3) carrying out an artistic pile test: according to design coordinates, firstly, 2 guide piles at the corners of the axial line of the weir pile are driven to position and drive the whole axial line to be well fixed, wherein the steel pipe pile is 20 mm in length and is phi 700 mm in length and is 12m in length and is 35# I-shaped steel for the manufacturability test pile;
and (3) adding and welding channel steel at the back of the steel sheet pile: 10# channel steel is adopted as a welding material, the length of the bound and welded channel steel is 22m after welding, the bound and welded channel steel is generally bound and welded at the back of a steel sheet pile, and the bound and welded position is in the middle of the steel sheet pile due to the fact that deformation is concentrated in the middle; in consideration of temperature strain during welding, the welding is a construction method in which spot welding is performed first and then full welding is performed from the center to both ends. The process should strengthen the management of acceptance check and acceptance link, and can be put into use after the experience collection lattice
Positioning the driving of the guide piles: in order to improve the straightness of the steel sheet pile cofferdam, guide piles and horizontal guide enclosing purlins are made before driving, so that the quality control is facilitated, and the construction efficiency is improved. Controlling the axis of the guide pile by using an instrument, fixing by using an electric welding structure, and using the guide beam as a reference axis for piling during piling;
inserting and driving steel sheet piles: because the bottom end of the soil layer is provided with a gravel layer, the pile head should be sharpened for smooth construction. The steel sheet piles are driven by a platform crane in cooperation with a vibration piling ship, and the bearing platforms are pulled out after construction is completed; the inner supporting beams are respectively arranged at the designed elevation positions and welded on the brackets of the steel sheet piles, and the two ends of the outer edge of each inner supporting beam are supported by the steel sheet piles so as to increase the capability of the cofferdam for resisting the soil side pressure and the water pressure;
driving a deviation rectifying pile: because piles are driven by locking buckles in a sleeved mode, fan-shaped deformation can be generated in construction, the problem is solved by driving deviation rectifying piles, and generally 15 deviation rectifying piles are used for rectifying once;
fixing a pull rod: and (2) butting the two pull rods by using threaded sleeves, hoisting the two pull rods into a steel sheet pile bin by using a ship crane after fastening, hoisting the two hoisting points, enabling one pull rod at one end to enter a hole (enter more), and enabling the other end to return to enter another hole, wherein constructors in the bin help the crane to align, the pull rods penetrate through a gap between two channel steels, and the outer ends of the pull rods are fixed by using a nut for a steel gasket and a rubber gasket of 210 mm. The double-spliced steel purlin is connected with steel sheet piles, and a pull rod is arranged on each 3 steel sheet piles on each layer;
construction of an outer impermeable membrane: arranging a layer of impermeable geomembrane on the inner side of the outer discharge steel sheet pile, lengthening and extending the bottom end of the impermeable geomembrane by 1m to serve as an anchoring section, and extending the top end of the impermeable geomembrane to the top of the outer steel sheet pile;
and (3) air-tight earthwork construction: carrying dry clay outside a steel sheet pile weir body by a ship, uniformly throwing the dry clay into a bin along a ship-borne grab bucket crane, and layering and segmenting to form a closed gas soil region;
and (4) completion acceptance: after the closed gas soil region is backfilled to the design top height, the steel sheet pile cofferdam can be organized in time according to the design and standard requirements for acceptance and use. So as to meet the normal construction of the sea wall structure in the cofferdam.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an extra long steel sheet pile cofferdam suitable for deep water condition, includes concave type steel sheet pile (1), its characterized in that: the concrete pile is characterized in that buckles (2) are integrally formed on two sides of the concave steel sheet pile (1), a channel steel purlin (3) is tightly contacted with one side of the concave steel sheet pile (1), a first through hole (4) is formed in the channel steel purlin (3), a steel pull rod (5) is inserted in the first through hole (4), one end of the steel pull rod (5) penetrates through the concave steel sheet pile (1), a threaded rod (6) is integrally formed at one end, far away from the end penetrating through the concave steel sheet pile (1), of the steel pull rod (5), two nuts (7) are screwed on the threaded rod (6), a foundation layer (14) is laid above the concave steel sheet pile (1), a composite cloth layer geotechnical engineering (15) is laid above the foundation layer (14), a riprap layer (16) is filled between the foundation layer (14) and the composite geotechnical cloth layer (15), a masonry retaining wall (17) is arranged on one side of the middle of the top end of the, one end, far away from the masonry retaining wall (17), of the composite geotextile layer (15) is inlaid with a dry-laid road shoulder stone (18).
2. The ultra-long steel sheet pile cofferdam applied to the deep water condition as recited in claim 1, characterized in that: the side surface of the concave steel sheet pile (1) is symmetrically welded with reinforcing ribs (8).
3. The ultra-long steel sheet pile cofferdam applied to the deep water condition as recited in claim 1, characterized in that: the lower end of the channel steel purlin (3) is in close contact with a steel plate bracket (9), and the steel plate bracket (9) is welded on the concave steel sheet pile (1).
4. The ultra-long steel sheet pile cofferdam applied to the deep water condition as recited in claim 1, characterized in that: the equal in close contact with in the left and right sides that the channel-section steel encloses purlin (3) has backing plate (10), second via hole (11) have been seted up in the center department of backing plate (10), threaded rod (6) run through backing plate (10) through second via hole (11), two backing plate (10) are located nut (7) and channel-section steel and enclose between purlin (3), and one is located the channel-section steel and encloses between purlin (3) and concave type steel sheet pile (1).
5. The ultra-long steel sheet pile cofferdam applied to the deep water condition as recited in claim 1, characterized in that: lifting holes (12) are formed in two sides of the upper end of the concave steel sheet pile (1).
6. The ultra-long steel sheet pile cofferdam applied to the deep water condition as recited in claim 1, characterized in that: the lower end of the concave steel sheet pile (1) is provided with a sharp corner (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921798385.5U CN211143098U (en) | 2019-10-24 | 2019-10-24 | Extra-long steel sheet pile cofferdam suitable for deep water condition |
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| CN201921798385.5U CN211143098U (en) | 2019-10-24 | 2019-10-24 | Extra-long steel sheet pile cofferdam suitable for deep water condition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373945A (en) * | 2021-07-07 | 2021-09-10 | 中国十七冶集团有限公司 | Pipeline engineering steel sheet pile supporting structure and construction method thereof |
| CN114411781A (en) * | 2022-01-06 | 2022-04-29 | 中交第二航务工程局有限公司 | Construction method of rock geological sheet pile cofferdam |
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2019
- 2019-10-24 CN CN201921798385.5U patent/CN211143098U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113373945A (en) * | 2021-07-07 | 2021-09-10 | 中国十七冶集团有限公司 | Pipeline engineering steel sheet pile supporting structure and construction method thereof |
| CN113373945B (en) * | 2021-07-07 | 2022-04-26 | 中国十七冶集团有限公司 | Pipeline engineering steel sheet pile supporting structure and construction method thereof |
| CN114411781A (en) * | 2022-01-06 | 2022-04-29 | 中交第二航务工程局有限公司 | Construction method of rock geological sheet pile cofferdam |
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