CN219175295U - Bailey beam combined deepwater cofferdam - Google Patents
Bailey beam combined deepwater cofferdam Download PDFInfo
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- CN219175295U CN219175295U CN202223391819.4U CN202223391819U CN219175295U CN 219175295 U CN219175295 U CN 219175295U CN 202223391819 U CN202223391819 U CN 202223391819U CN 219175295 U CN219175295 U CN 219175295U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model belongs to the technical field of bridge foundation construction enclosure, and particularly relates to a bailey beam combined deepwater cofferdam. The deepwater cofferdam comprises a reinforced concrete combined bottom plate, wherein the upper part of the reinforced concrete combined bottom plate is connected with a deepwater enclosing structure, the deepwater enclosing structure comprises side templates which are connected end to form a rectangular frame, the outer sides of the side template rectangular frames are connected with a plurality of groups of bailey beams, the inner sides of the side template rectangular frames are provided with a plurality of groups of steel pipe opposite supports, the bottom of the side template rectangular frames and the upper part of the reinforced concrete combined bottom plate are provided with back cover concrete, and the tops of the bailey beams are fixedly connected with triangular truss sheets. The deep water enclosure structure is formed by the bailey beams and the side templates, the bearing capacity is large, the stability is good, the reinforced concrete combined bottom plate adopts the beam and plate combined structure, the bearing capacity of the bottom plate is improved, the on-site concrete pouring construction amount is reduced, and the bailey beams can be recycled after the cofferdam is used.
Description
Technical Field
The utility model belongs to the technical field of bridge foundation construction enclosure, and particularly relates to a bailey beam combined deepwater cofferdam.
Background
In bridge foundation construction, when bridge piers and platform foundations are positioned under water, cofferdams are needed, so that the water can be prevented and enclosed, and pit walls of foundation pits can be supported. As the root of the bridge, the construction quality of the foundation determines the bearing capacity of the whole bridge, and the building envelope is important in the foundation construction.
The traditional steel suspended box cofferdam mainly comprises a single-wall steel suspended box and a double-wall steel suspended box, and is designed according to design factors such as water depth and flow velocity at bridge positions.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide the Bailey beam combined deepwater cofferdam, which forms a deepwater enclosure structure through the Bailey beams and the side templates, has large bearing capacity and good stability, adopts a beam and plate combined structure for the reinforced concrete combined bottom plate, improves the bearing capacity of the bottom plate, reduces the on-site concrete pouring construction amount, reduces the pollution of water pollution, waste gas, dust and the like, and simultaneously can be removed for recycling after the cofferdam is used, has high speed in on-site construction and better economy.
The technical scheme of the utility model is as follows: the utility model provides a bailey beam combination formula deep water cofferdam, includes reinforced concrete combination bottom plate, reinforced concrete combination bottom plate upper portion is connected with deep water envelope, deep water envelope includes the side form board that the end to end connects into rectangular frame, the outside of side form board rectangular frame is connected with multiunit bailey beam, the inboard of side form board rectangular frame is equipped with multiunit steel pipe and props, the bottom of side form board rectangular frame reinforced concrete combination bottom plate upper portion is equipped with the back cover concrete, bailey beam top fixedly connected with triangular truss piece.
The reinforced concrete combined bottom plate adopts a beam and plate combined structure and comprises reinforced concrete plates and a plurality of reinforced concrete outer edge beams arranged along the edges of the reinforced concrete plates, wherein a plurality of reinforced concrete outer edges Liang Shouwei are connected into a rectangular frame, a plurality of reinforced concrete inner yoke beams are arranged inside the rectangular frame, a plurality of reinforced concrete cantilever beams are arranged outside the rectangular frame, and a plurality of section steel spandrel beams which are arranged in parallel are arranged at the bottoms of the reinforced concrete plates.
The reinforced concrete cantilever beam is provided with an embedded part, the embedded part comprises embedded anchor bars and a connecting lug plate, a bailey connecting pin is arranged in the connecting lug plate, and the reinforced concrete cantilever beam is connected with the bottom of the bailey beam through the connecting lug plate through a pin shaft.
The side form comprises a side form panel, a plurality of vertical parallel side form vertical edges are arranged on one side, close to the Bailey beams, of the side form panel, bailey beam connecting assemblies are arranged on the side form vertical edges, and the side form panel is fixedly connected with the Bailey beams through the Bailey beam connecting assemblies.
The Bailey beam connecting assembly comprises a plurality of side-mold transverse back-edge section steel, the side-mold transverse back-edge section steel is vertically arranged with the side-mold vertical edge, the joint of the side-mold transverse back-edge section steel and the side-mold vertical edge is welded and fixed by adopting fillet welds, a plurality of side-mold transverse back-edge fastening bolts are connected to the side-mold transverse back-edge section steel, and the side-mold transverse back-edge fastening bolts are used for fastening the side-mold transverse back-edge section steel with the Bailey beam.
Each set of bailey beams comprises two rows, a plurality of connecting flower frames are connected between the two rows of bailey beams, and a plurality of connecting angle steels are connected between every two adjacent sets of bailey beams.
The steel pipe pair support comprises a longitudinal steel pipe and a transverse steel pipe which are arranged vertically, and a steel pile casing is arranged at the center of a space divided by the longitudinal steel pipe, the transverse steel pipe and the side template.
The utility model has the technical effects that: 1. the deep water enclosure structure is formed by the bailey beams and the side templates, the side templates have large bearing capacity, good stability and large strength and rigidity, so that the cofferdam can adapt to more various construction environments and can meet the requirements of bridge deep water foundation construction; 2. after the cofferdam is used, the bailey beams and the side templates can be recycled by the drilling platform, so that the investment of resources is reduced, the bailey beams are connected through the pin joint, the construction speed is high, and the construction period is short; 3. the reinforced concrete combined bottom plate adopts the beam and plate combined structure, improves the bearing capacity of the bottom plate, adopts the form of the precast reinforced concrete plate, has the advantages of large bearing capacity, small deformation and small steel bar consumption, can ensure the construction quality of the bottom plate by adopting precast construction, reduces the on-site concrete pouring construction amount, and reduces the pollution of water pollution, waste gas, dust and the like.
Further description will be made below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a structural elevation of a Bailey beam combined deepwater cofferdam according to an embodiment of the present utility model
Fig. 2 is a schematic top view illustrating a structure of a beret beam combined deepwater cofferdam according to an embodiment of the present utility model
Fig. 3 is a schematic diagram of a bottom plate structure of a beret beam combined deepwater cofferdam according to an embodiment of the present utility model
Fig. 4 is a construction flow chart of a beret beam combined deepwater cofferdam according to an embodiment of the present utility model
Fig. 5 is a second construction flow chart of a beret beam combined deepwater cofferdam according to an embodiment of the present utility model
FIG. 6 is a third construction flow chart of a Bailey beam combined deepwater cofferdam in accordance with an embodiment of the present utility model
FIG. 7 is a fourth flowchart of a construction process of a Bailey beam combined deepwater cofferdam according to an embodiment of the present utility model
Fig. 8 is a fifth construction flow chart of a beret beam combined deepwater cofferdam according to an embodiment of the present utility model
FIG. 9 is a sixth construction flow chart of a Bailey beam combined deepwater cofferdam according to an embodiment of the present utility model
Fig. 10 is a three-dimensional schematic view of a beret beam combined deepwater cofferdam according to an embodiment of the present utility model
Reference numerals: 1-bailey beam, 101-connection flower stand, 102-connection angle steel, 2-reinforced concrete combined bottom plate, 201-steel supporting beam, 202-reinforced concrete cantilever beam, 203-reinforced concrete inner yoke beam, 204-reinforced concrete outer yoke, 205-reinforced concrete slab, 3-embedded part, 301-embedded anchor bar, 302-connection lug plate, 303-bailey connection pin, 4-triangular truss sheet, 5-bailey beam connection assembly, 501-side mold transverse back ridge section steel, 502-side mold transverse back ridge fastening bolt, 6-side mold, 601-side mold panel, 602-side mold vertical ridge, 7-steel pipe opposite support, 701-longitudinal steel pipe, 702-transverse steel pipe, 8-back cover concrete, 9-steel protective cylinder, 10-assembled support, 11-extension protective cylinder, 12-jack lowering device and 13-cofferdam suspension device.
Detailed Description
Example 1
As shown in fig. 1, the beret beam combined type deepwater cofferdam comprises a reinforced concrete combined bottom plate 2, wherein a deepwater building envelope is connected to the upper portion of the reinforced concrete combined bottom plate 2, the deepwater building envelope comprises side templates 6 which are connected end to form a rectangular frame, a plurality of groups of beret beams 1 are connected to the outer side of the rectangular frame of the side templates 6, a plurality of groups of steel pipe opposite supports 7 are arranged on the inner side of the rectangular frame of the side templates 6, a bottom sealing concrete 8 is arranged on the bottom of the rectangular frame of the side templates 6 and the upper portion of the reinforced concrete combined bottom plate 2, and triangular truss sheets 4 are fixedly connected to the top of the beret beams 1.
When the utility model is actually used, the deep water enclosure structure is formed by the bailey beam 1 and the side templates 6, the side templates 6 have large bearing capacity, good stability and large strength and rigidity, so that the cofferdam can adapt to more various construction environments and can meet the requirements of bridge deep water foundation construction; 2. the beret beam and the side templates adopted by the utility model can be recycled by the drilling platform after the cofferdam is used, so that the investment of resources is reduced.
Example 2
On the basis of embodiment 1, as shown in fig. 2, in this embodiment, preferably, the reinforced concrete composite bottom plate 2 adopts a beam-plate composite structure, and includes a reinforced concrete slab 205, and a plurality of reinforced concrete external beams 204 disposed along the edge of the reinforced concrete slab 205, where a plurality of reinforced concrete external beams 204 are connected end to form a rectangular frame, a plurality of reinforced concrete internal beams 203 are disposed inside the rectangular frame, a plurality of reinforced concrete cantilever beams 202 are disposed outside the rectangular frame, and a plurality of parallel-disposed section steel spandrel beams 201 are disposed at the bottom of the reinforced concrete slab 205.
In actual use, the reinforced concrete combined bottom plate 2 adopts a beam and plate combined structure, improves the bearing capacity of the bottom plate, adopts the form of precast reinforced concrete plates, has the advantages of large bearing capacity, small deformation and small reinforcing steel bar dosage, and the reinforced concrete cantilever beam 202 is used for supporting the bailey beam 1, and the part of the cantilever beam 202 is designed into a variable-section beam so as to reduce the concrete quantity on the premise of meeting the bearing capacity.
Example 3
On the basis of embodiment 1 or embodiment 2, in this embodiment, preferably, an embedded part 3 is disposed on the reinforced concrete cantilever beam 202, the embedded part 3 includes an embedded anchor bar 301 and a connection lug plate 302, a bailey connection pin 303 is disposed in the connection lug plate 302, and the reinforced concrete cantilever beam 202 is in pin connection with the bottom of the bailey beam 1 through the connection lug plate 302.
When the utility model is actually used, the bailey beam 1 is used as a main stress member and is connected with the reinforced concrete cantilever beam 202 through the embedded part 3 and the bailey connecting pin 303, so that the secondary internal force of the root can be reduced, and the stress intensity can meet the requirement. The bailey beam 1 and the reinforced concrete cantilever beam 202 can be simply and conveniently assembled in construction, rapid construction is realized, and the bailey beam 1 is recycled after the bailey connecting pin 303 can be removed after the cofferdam is used in the later stage.
Example 4
On the basis of embodiment 1 or embodiment 3, preferably, the side form 6 includes a side form panel 601, one side of the side form panel 601, which is close to the bailey beam 1, is provided with a plurality of vertical side form vertical ribs 602 disposed in parallel, the side form vertical ribs 602 are provided with bailey beam connection assemblies 5, and the side form 6 is fixedly connected with the bailey beam 1 through the bailey beam connection assemblies 5.
In actual use, a plurality of vertical side mold vertical ribs 602 are arranged on one side of the side mold panel 601, which is close to the bailey beam 1, and the bailey beam connecting assembly 5 is arranged on the vertical side mold ribs 602, and the side mold plate 6 is fixedly connected with the bailey beam 1 through the bailey beam connecting assembly 5, so that the bailey beam and the side mold plate form a deep water enclosure structure, and the side mold plate has high bearing capacity, good stability and high strength and rigidity.
Example 5
On the basis of embodiment 1 or embodiment 4, in this embodiment, preferably, the beret beam connection assembly 5 includes a plurality of side mold transverse back edge section steels 501, the side mold transverse back edge section steels 501 are vertically disposed with the side mold vertical edges 602, the connection parts of the side mold transverse back edge section steels 501 and the side mold vertical edges 602 are welded and fixed by adopting fillet welding, a plurality of side mold transverse back edge fastening bolts 502 are connected to the side mold transverse back edge section steels 501, and the side mold transverse back edge fastening bolts 502 are used for fastening the side mold transverse back edge section steels 501 with the beret beam 1.
When the utility model is actually used, the lateral back ridge section steel 501 of the side die and the vertical ridge 602 of the side die are welded through fillet weld, so that the connection is firm. The lateral mold lateral back ridge fastening bolt 502 is used for fastening the lateral mold lateral back ridge section steel 501 and the bailey beam 1, and is detached after use.
Example 6
On the basis of embodiment 1 or embodiment 5, in this embodiment, preferably, each set of bailey beams 1 includes two rows, a plurality of connecting flower frames 101 are connected between the two rows of bailey beams 1, and a plurality of connecting angle steels 102 are connected between each adjacent set of bailey beams 1.
When the utility model is actually used, each set of the Bailey beams 1 comprises two rows, a plurality of connecting flower frames 101 are connected between the two rows of the Bailey beams 1, so that the stress of the Bailey beams 1 structure is ensured, the bearing capacity is high, the stability is good, a plurality of connecting angle steels 102 are connected between every two adjacent sets of Bailey beams 1, and the steel consumption is saved. When the utility model is actually used, the distance between each two groups of the bailey beams 1 is 45cm or 90cm according to the size of the cofferdam and the water depth.
Example 7
In the present embodiment, on the basis of embodiment 1, it is preferable that the steel pipe pair support 7 includes a longitudinal steel pipe 701 and a transverse steel pipe 702 which are disposed perpendicularly to each other, and a steel casing 9 is provided at a center of a space divided by the longitudinal steel pipe 701, the transverse steel pipe 702 and the sideform 6.
When the utility model is actually used, the steel pipe opposite support 7 comprises a longitudinal steel pipe 701 and a transverse steel pipe 702 which are mutually perpendicular, so that the effective support of the opposite side template 6 is ensured.
The utility model relates to a bailey beam combined deepwater cofferdam in actual use, which comprises the following steps:
s1: during bridge foundation drilling construction, prefabricating the reinforced concrete composite bottom plate 2 in a factory, and constructing an embedded part 3 for connecting the bailey beam 1 in the reinforced concrete cantilever beam 202;
s2: as shown in fig. 4, after the pile foundation construction is completed by using a drilling platform, removing part of the drilling platform, assembling a cofferdam assembling platform by using an automobile crane, building a temporary assembling bracket 10, hoisting a reinforced concrete combined bottom plate 2, positioning, ensuring the position of the reinforced concrete combined bottom plate 2 to be accurate, connecting and arranging a bailey beam 1 and side-mold transverse back-stupefied section steel 501 of the detached drilling platform, and preparing a deep water enclosure structure of the cofferdam;
s3: as shown in fig. 5, the extension casing 11 is used as a deepwater building envelope, a first beret beam 1 is hoisted by using an automobile crane and is connected with the embedded part 3 through a beret connecting pin 303, and meanwhile, a jack device 12 for the deepwater building envelope to be lowered is assembled, so that the deepwater building envelope is prepared for the lowering construction;
s4: as shown in fig. 6 and 7, after the first section of deepwater enclosure structure is lowered to a proper position, continuously assembling the bailey beam 1 at the same time, and installing a steel pipe opposite support 7;
s5, as shown in FIG. 8, when the deepwater enclosure structure is lowered to the designed elevation, installing a cofferdam suspension system 13, dismantling the lowering system 12, pouring underwater back cover concrete 8, paying attention to the water head difference between the inside and the outside of the deepwater enclosure structure at the moment in the pouring process, and ensuring the consistency of the water heads between the inside and the outside of the deepwater enclosure structure by using a water pumping device;
and S6, as shown in fig. 9 and 10, after the strength 8 of the bottom-sealing concrete meets the requirement, pumping water in the deepwater enclosure structure, dismantling the suspension system 13, cutting the steel pile casing 9 to the designed elevation, completing the installation of the beret beam combined deepwater cofferdam, then carrying out pile foundation detection, and carrying out bearing platform construction after the pile is qualified.
The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model.
Claims (7)
1. The utility model provides a bailey beam combination formula deep water cofferdam which characterized in that: including reinforced concrete combination bottom plate (2), reinforced concrete combination bottom plate (2) upper portion is connected with deep water envelope, deep water envelope includes side form (6) of end to end connection rectangular frame, the outside of side form (6) rectangular frame is connected with multiunit bailey beam (1), the inboard of side form (6) rectangular frame is equipped with multiunit steel pipe pair support (7), the bottom of side form (6) rectangular frame reinforced concrete combination bottom plate (2) upper portion is equipped with back cover concrete (8), bailey beam (1) top fixedly connected with triangular truss piece (4).
2. The bailey beam combination deepwater cofferdam of claim 1, wherein: the reinforced concrete combined bottom plate (2) adopts a beam and plate combined structure, comprises reinforced concrete plates (205) and a plurality of reinforced concrete peripheral beams (204) arranged along the edges of the reinforced concrete plates (205), wherein the reinforced concrete peripheral beams (204) are connected end to form a rectangular frame, a plurality of reinforced concrete internal beams (203) are arranged inside the rectangular frame, a plurality of reinforced concrete cantilever beams (202) are arranged outside the rectangular frame, and a plurality of profile steel spandrel girders (201) which are arranged in parallel are arranged at the bottoms of the reinforced concrete plates (205).
3. The bailey beam combination deepwater cofferdam of claim 2, wherein: the reinforced concrete cantilever beam (202) is provided with an embedded part (3), the embedded part (3) comprises an embedded anchor bar (301) and a connecting lug plate (302), a bailey connecting pin (303) is arranged in the connecting lug plate (302), and the reinforced concrete cantilever beam (202) is in pin shaft connection with the bottom of the bailey beam (1) through the connecting lug plate (302).
4. The bailey beam combination deepwater cofferdam of claim 1, wherein: the side form (6) comprises a side form panel (601), one side of the side form panel (601) close to the bailey beam (1) is provided with a plurality of vertical parallel side form vertical edges (602), the side form vertical edges (602) are provided with bailey beam connecting components (5), and the side form panel (6) is fixedly connected with the bailey beam (1) through the bailey beam connecting components (5).
5. The bailey beam combination deepwater cofferdam of claim 4, wherein: the Bailey beam connecting assembly (5) comprises a plurality of side-mold transverse back-ridge section steel (501), the side-mold transverse back-ridge section steel (501) is vertically arranged with the side-mold vertical ridge (602), the connection of the side-mold transverse back-ridge section steel (501) and the side-mold vertical ridge (602) is welded and fixed by adopting fillet weld, a plurality of side-mold transverse back-ridge fastening bolts (502) are connected to the side-mold transverse back-ridge section steel (501), and the side-mold transverse back-ridge fastening bolts (502) are used for fastening the side-mold transverse back-ridge section steel (501) with the Bailey beam (1).
6. The bailey beam combination deepwater cofferdam of claim 1, wherein: each group of the bailey beams (1) comprises two rows, a plurality of connecting flower frames (101) are connected between the two rows of the bailey beams (1), and a plurality of connecting angle steels (102) are connected between every two adjacent groups of the bailey beams (1).
7. The bailey beam combination deepwater cofferdam of claim 1, wherein: the steel pipe opposite support (7) comprises a longitudinal steel pipe (701) and a transverse steel pipe (702) which are arranged vertically to each other, and a steel casing (9) is arranged at the center of a space divided by the longitudinal steel pipe (701), the transverse steel pipe (702) and the side template (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223391819.4U CN219175295U (en) | 2022-12-19 | 2022-12-19 | Bailey beam combined deepwater cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223391819.4U CN219175295U (en) | 2022-12-19 | 2022-12-19 | Bailey beam combined deepwater cofferdam |
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| Publication Number | Publication Date |
|---|---|
| CN219175295U true CN219175295U (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223391819.4U Active CN219175295U (en) | 2022-12-19 | 2022-12-19 | Bailey beam combined deepwater cofferdam |
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| Country | Link |
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| CN (1) | CN219175295U (en) |
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- 2022-12-19 CN CN202223391819.4U patent/CN219175295U/en active Active
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