CN208545763U - A kind of steel pipe pile cofferdam for bridge deepwater foundation - Google Patents
A kind of steel pipe pile cofferdam for bridge deepwater foundation Download PDFInfo
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- CN208545763U CN208545763U CN201820993918.4U CN201820993918U CN208545763U CN 208545763 U CN208545763 U CN 208545763U CN 201820993918 U CN201820993918 U CN 201820993918U CN 208545763 U CN208545763 U CN 208545763U
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Abstract
A kind of steel pipe pile cofferdam for bridge deepwater foundation is related to cofferdam construction technical field, including bottom concrete, lock steel-pipe pile, reinforced concrete pile, is equipped with the pile foundation for going deep into basement rock below bottom concrete；Lock steel-pipe pile includes pile body and the lock set on pile body wall surface, and lock steel-pipe pile is surrounded on the edge of bottom concrete by the connection of lock, and pile body lower end is integrally extended with the pile crown for going deep into surface of bedrock；Inner support is additionally provided in lock steel-pipe pile, inner support includes the support rod between H profile steel purlin and the horizontal lock steel-pipe pile for being set to opposite side；For concrete-pile by extending downward into inside basement rock in lock steel-pipe pile, reinforced concrete pile includes concrete substrate and the steel reinforcement cage in concrete substrate.The utility model has the advantages that simple process, easy for construction, at low cost, high safety, support performance is good, is suitable for complicated condition of river floor.
Description
Technical field
The utility model relates to cofferdam construction technical field more particularly to a kind of steel pipes for bridge deepwater foundation
Pile cofferdam.
Background technique
In the part rivers in China, especially such as Ganjiang River, geology, hydrologic condition complexity are different, and riverbed is mostly exposed
Basement rock crouches in riverbed exposed bedrock under 15 meters of cushion caps of clear distance parallel with existing Beijing-Kowloon Railway Line, without mud, the sand etc. in tradition riverbed
Coating carries out the rear construction in place in order to which steel-pipe pile sinks of the Auxiliary support of pile sinking.During bridge construction, using tradition
If Double-Wall Steel Boxed Cofferdam is constructed, exist close on it is both wired lead to insufficient space, while exposed bedrock cause general cofferdam without
Method is sunk in place, and steel-pipe pile not can guarantee embedded depth and overall stiffness.And according to long Larsen steel sheet pile, intensity and tooth mouth
It closes water and is unable to reach construction demand.Tall and big machinery is inconvenient to use in the construction process simultaneously.
Utility model content
The purpose of this utility model is to provide a kind of steel pipe pile cofferdams for bridge deepwater foundation, thus more than solving
Technical problem, steel-pipe pile processing and fabricating is simple, quick, and material is purchased quickly, and yin-yang lock processing technology is simple, workload
Less, processing site is of less demanding；Steel-pipe pile is beaten using vibration hammer by root cutting, and Spiral digging machine is consolidated by root pilot hole, to solve exposed
Basement rock is difficult to the problem of constructing, and working procedure is succinct, and mechanized construction is at low cost, reusable, high safety, and effect is good.
To realize purpose of utility model, the utility model is adopted the technical scheme that
A kind of steel pipe pile cofferdam for bridge deepwater foundation, including bottom concrete, lock steel-pipe pile, armored concrete
Stake, type steel support system, the bottom concrete are located at the top of riverbed bottom basement rock and partially extend down into the table of basement rock
Face, the bottom concrete lower section are equipped with the pile foundation for going deep into basement rock；The lock steel-pipe pile include pile body and be set to the pile body
The lock of wall surface, a plurality of lock steel-pipe piles are surrounded on the side of the bottom concrete by the head and the tail connection of the lock
Edge, the pile body lower end is contacted with surface of bedrock and the pile body lower end is integrally extended with the pile crown for going deep into surface of bedrock；It is described
Inner support is additionally provided in lock steel-pipe pile, the inner support includes H profile steel purlin and the horizontal lock steel pipe for being set to opposite side
Support rod between stake；The concrete-pile in the lock steel-pipe pile by extending downward into inside basement rock, the armored concrete
Stake includes concrete substrate and the steel reinforcement cage in the concrete substrate.
As the preferred of the utility model, the lock includes that yin lock is latched with sun, and the yin lock is is welded in
State the steel pipe of pile body outer wall, the sun lock is the I-steel for being welded in the pile body outer wall, the yin lock in its with it is described
Pile body weld is equipped with interconnecting piece to side wall, and the interconnecting piece width is equal with the sun lock thickness.
Further, the lock steel-pipe pile includes plane stake and corner pile；The yin lock and the sun of the plane stake
It latches in coplanar in the type heart in floor projection；The yin lock of the corner pile latches in floor projection with sun to hang down in 90 °
Directly.
As the preferred of the utility model, the lock is extended under the pile body downward vertically by the top of the pile body
The lower end of end and the pile crown junction, the lock has groove.
Further, the bevel angle is 30 °.
Further, the lock two sides are symmetrically welded with stiffener.
As the preferred of the utility model, the pile crown length is 1.5-2 meters.
As the preferred of the utility model, the pile crown end is equipped with expansion interface.
As the preferred of the utility model, the support boom end is equipped with control joint, and the control joint includes connection
Bar and connector set on the connecting rod front end, the connecting rod is the screw thread that the support rod is connected to screw nut pair
Bar, the connector is end and the pile body surface is in the steel plate of male-female engagement.
Further, the support rod is hollow stem, and the rear end of the connecting rod is contained in inside the support rod.
The utility model has the beneficial effects that:
1. isolated lock steel-pipe pile allows to consolidation of effectively taking root on exposed bedrock；
2. yin-yang lock processing is easy, the splicings between multiple lock steel-pipe piles are convenient, pass through matching for plane stake and corner pile
Close the enclosing shape and size for being conducive to easily adjust lock steel-pipe pile according to demand；
3. pile crown is extended downwardly by pile body, i.e., it is not deep to latch the pile body being located at when taking root and consolidating on basement rock for lock steel-pipe pile
Entering basement rock can be realized good consolidation effect, facilitate construction, pile sinking and protection lock to realize recycling；
4. groove makes lock steel-pipe pile reduce its penetration resistance in piling, while avoiding the deformation or impaired of lock；
5. the connective stability and support strength of lock can be improved in stiffener, to have good mechanical property；
6. steel purlin and support rod provide the support for fighting extraneous hydraulic pressure for lock steel-pipe pile, relatively general to use steel purlin entirely
Existing form of construction work, pass through steel purlin rise main support and by easy-to-mount support rod cooperation can be improved in cofferdam
Convenience in working space and construction.
Detailed description of the invention
Fig. 1 is the lateral schematic diagram in the utility model cofferdam；
Fig. 2 is that the utility model lock the perpendicular of steel-pipe pile cuts open schematic diagram；
Fig. 3 is the horizontal cross-section schematic diagram of the utility model plane stake；
Fig. 4 is the horizontal cross-section schematic diagram of the utility model corner pile；
Fig. 5 is the enlarged diagram at the utility model reinforced concrete pile；
Fig. 6 is the end partial sectional view of the utility model support rod；
Items are respectively as follows: 1 bottom concrete in figure, and 11 pile foundations, 2 lock steel-pipe piles, 21 pile bodies, 22 pile crowns, 23 latch,
231 yin locks, 232 sun locks, 233 interconnecting pieces, 234 stiffeners, 235 grooves, 3 reinforced concrete piles, 31 concrete substrates, 32
Steel reinforcement cage, 4 steel purlins, 5 support rods, 51 control joints, 52 connecting rods, 53 connectors.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing:
Embodiment one
A kind of steel pipe pile cofferdam for bridge deepwater foundation as shown in Figure 1, 2, including bottom concrete 1, lock steel
Tubular pole 2, reinforced concrete pile 3, bottom concrete 1 are located at the top of riverbed bottom basement rock and partially extend down into the table of basement rock
Face, bottom concrete 1 are in cuboid shape.The pile foundation 11 for going deep into basement rock is equipped with below bottom concrete 1.Steel-pipe pile 2 is latched to wrap
Pile body 21 and the lock 23 set on 21 wall surface of pile body are included, a plurality of lock steel-pipe piles 2 are surrounded on by the head and the tail connection of lock 23
The edge of bottom concrete 1,21 lower end of pile body is contacted with the free face of surface of bedrock and 21 lower end of pile body is integrally formed and downward
It is extended with the pile crown 22 for going deep into surface of bedrock.It is additionally provided with inner support in lock steel-pipe pile 2, inner support includes H profile steel purlin 4 and water
Support rod 5 between the flat lock steel-pipe pile 2 set on opposite side, number is the setting of center circumference with steel purlin 4 with support rod 5, to have
There is good Auxiliary support performance.For reinforced concrete pile 3 by extending downward into inside basement rock in lock steel-pipe pile 2, end is deep
Degree is deeper than depth locating for pile crown 22.
As shown in figure 5, reinforced concrete pile 3 includes concrete substrate 31 and the steel reinforcement cage in concrete substrate 31
32。
As shown in Figure 3,4, in the present embodiment, lock 23 includes yin lock 231 and sun lock 232, and yin lock 231 is weldering
It is connected to the steel pipe of 21 outer wall of pile body, sun lock 232 is the I-steel for being welded in 21 outer wall of pile body, yin 231 Yu Qiyu pile bodies of lock
21 welds are equipped with the interconnecting piece 233 of seam shape to side wall, and 233 width of interconnecting piece is equal with sun 232 thickness of lock, are installing
When, the connection that grafting is formed in the straight beam insertion interconnecting piece 233 of I-steel in sun lock 232 is imitated with vertically downward direction
Fruit.Latching steel-pipe pile 2 includes plane stake and corner pile；The yin lock 231 of plane stake and sun lock 232 are in type in floor projection
The heart is coplanar；The yin lock 231 of corner pile is vertical in 90 ° in floor projection with sun lock 232.Such as the lock steel in the present embodiment
Tubular pole 2 is enclosing when 1 edge of bottom concrete, because bottom concrete 1 is cuboid, i.e., sets in the quadrangle in the cofferdam enclosed
Above-mentioned corner pile is set, the side for connecting quadrangle passes through the plane stake connection being successively connected, and forms sealing effect.
In the present embodiment, 23 two sides of lock are symmetrically welded with stiffener 234.
In the present embodiment, lock 23 extends to 21 lower end of pile body by the top of pile body 21 downward vertically and connect with pile crown 22
Place, latching 23 lower end has groove 235.235 angle of groove is 30 °.
In the present embodiment, 22 length of pile crown is 1.5 meters.
Embodiment two
Technical solution described in the present embodiment is approximate with embodiment one, the difference is that:
In the present embodiment, 22 length of pile crown is 2 meters.
In the present embodiment, 22 end of pile crown is equipped with expansion interface.The expansion interface is the annular formed around 22 end of pile crown
Angle can weld extension if having the demand for lengthening pile foundation depth on expansion interface by way of symmetrically subsidizing groove welding
Section.
The present embodiment provides a kind of Project cases for building cofferdam described in the utility model simultaneously: lock 2 pile crown of steel-pipe pile
22 and pile body 21 formed cofferdam main body, filling armored concrete and lock steel-pipe pile 2 bonding form cofferdam " foundation ", using vibration
The auxiliary constructions such as hammer, Spiral digging machine mechanical equipment carries out driving and pile sinking.Specifically: pile body 21 and pile crown 22 select 820 steel pipes, adopt
With DJZ120 vibration hammer to lock 2 pile vibrosinking of steel-pipe pile, sink to after basal surfaces using XD220 Spiral digging machine in lock steel-pipe pile
2 internal drilling 2m manufacture free face pile vibrosinking 2m again, and rotary digging pilot hole places diameter 65cm to projected depth 3m to Spiral digging machine again
Steel reinforcement cage 32, underwater grouting fill concrete matrix 31.
Embodiment three
Technical solution described in the present embodiment is approximate with embodiment one, the difference is that:
As shown in fig. 6,5 both ends end of support rod is equipped with control joint 51 in the present embodiment, control joint 51 includes connection
Bar 52 and connector 53 set on 52 front end of connecting rod, connecting rod 52 is the threaded rod that support rod 5 is connected to screw nut pair,
Connector 52 is that the steel plate of end cooperation and the support of 21 surface H profile steel purlin 4 of pile body connect.
In the present embodiment, support rod 5 is hollow stem, and the rear end of connecting rod 52 is contained in inside support rod 5.
During installation, support rod 5 is horizontally placed on to two lock steel-pipe piles, 2 inside being oppositely arranged, the connector 52 of one end
It is supported in lock 2 inner surface H profile steel purlin 4 of steel-pipe pile by mating surface, hereafter, rotary supporting rod 5, secondary by screw nut
The opposite extension between connecting rod 52 and support rod 5 is realized in cooperation, is supported until the connector 52 of the other end stops with H profile steel purlin 4,
Realize the cross-brace of fast assembling-disassembling.
Above embodiments are only described preferred embodiments of the present invention, not to the structure of the utility model
Think and range is defined, without departing from the design concept of the present utility model, ordinary people in the field is practical new to this
The all variations and modifications that the technical solution of type is made each fall within the protection scope of the utility model, the utility model request
The technology contents of protection, are all described in the claims.
Claims (10)
1. a kind of steel pipe pile cofferdam for bridge deepwater foundation, including bottom concrete (1), lock steel-pipe pile (2), reinforcing bar are mixed
Solidifying soil stake (3), which is characterized in that the bottom concrete (1) is located at the top of riverbed bottom basement rock and partially extends down into
The surface of basement rock, bottom concrete (1) lower section are equipped with the pile foundation (11) for going deep into basement rock；The lock steel-pipe pile (2) includes
Pile body (21) and the lock (23) for being set to the pile body (21) wall surface, a plurality of lock steel-pipe piles (2) pass through the lock
(23) head and the tail connection is surrounded on the edge of the bottom concrete (1), pile body (21) lower end contacted with surface of bedrock and
Pile body (21) lower end is integrally extended with the pile crown (22) for going deep into surface of bedrock；In being additionally provided in the lock steel-pipe pile (2)
Support, the inner support include the support rod between H profile steel purlin (4) and the horizontal lock steel-pipe pile (2) for being set to opposite side
(5)；The reinforced concrete pile (3) in the lock steel-pipe pile (2) by extending downward into inside basement rock, the armored concrete
Stake (3) includes concrete substrate (31) and the steel reinforcement cage (32) in the concrete substrate (31).
2. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 1, which is characterized in that the lock
It (23) include yin lock (231) and sun lock (232), the yin lock (231) is the steel for being welded in the pile body (21) outer wall
Pipe, the sun lock (232) is the I-steel for being welded in the pile body (21) outer wall, described in described yin lock (231) Yu Qiyu
Pile body (21) weld is equipped with interconnecting piece (233) to side wall, and interconnecting piece (233) width and the sun latch (232) thickness
It is equal.
3. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 2, which is characterized in that the lock
Steel-pipe pile (2) includes plane stake and corner pile；The yin lock (231) of the plane stake and sun lock (232) are thrown in level
It is coplanar in the type heart on shadow；The yin lock (231) of the corner pile is vertical in 90 ° in floor projection with sun lock (232).
4. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 1, which is characterized in that the lock
(23) pile body (21) lower end and the pile crown (22) junction, institute are extended to by the top of the pile body (21) downward vertically
The lower end for stating lock (23) has groove (235).
5. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 4, which is characterized in that the groove
(235) angle is 30 °.
6. according to claim 1 to any a kind of steel pipe pile cofferdam for bridge deepwater foundation in 5, feature exists
In described lock (23) two sides are symmetrically welded with stiffener (234).
7. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 1, which is characterized in that the pile crown
(22) length is 1.5-2 meters.
8. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 1, which is characterized in that the pile crown
(22) end is equipped with expansion interface.
9. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 1, which is characterized in that the support
Bar (5) end is equipped with control joint (51), and the control joint (51) includes connecting rod (52) and is set to the connecting rod (52)
The connector (53) of front end, the connecting rod (52) is the threaded rod that the support rod (5) are connected to screw nut pair, described
Connector (53) is the steel plate of end and the pile body (21) surface engagement.
10. a kind of steel pipe pile cofferdam for bridge deepwater foundation according to claim 9, which is characterized in that the branch
Strut (5) is hollow stem, and it is internal that the rear end of the connecting rod (52) is contained in the support rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993918.4U CN208545763U (en) | 2018-06-27 | 2018-06-27 | A kind of steel pipe pile cofferdam for bridge deepwater foundation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820993918.4U CN208545763U (en) | 2018-06-27 | 2018-06-27 | A kind of steel pipe pile cofferdam for bridge deepwater foundation |
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| CN208545763U true CN208545763U (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820993918.4U Active CN208545763U (en) | 2018-06-27 | 2018-06-27 | A kind of steel pipe pile cofferdam for bridge deepwater foundation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729457A (en) * | 2018-06-27 | 2018-11-02 | 中铁十六局集团第三工程有限公司 | A kind of steel pipe pile cofferdam and its construction method for bridge deepwater foundation |
| CN110485446A (en) * | 2019-09-12 | 2019-11-22 | 中国五冶集团有限公司 | A kind of steel pipe pile element and steel pipe pile cofferdam |
| CN110847047A (en) * | 2019-11-21 | 2020-02-28 | 中交第二航务工程局有限公司 | Open sea bare rock trestle construction method |
-
2018
- 2018-06-27 CN CN201820993918.4U patent/CN208545763U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729457A (en) * | 2018-06-27 | 2018-11-02 | 中铁十六局集团第三工程有限公司 | A kind of steel pipe pile cofferdam and its construction method for bridge deepwater foundation |
| CN110485446A (en) * | 2019-09-12 | 2019-11-22 | 中国五冶集团有限公司 | A kind of steel pipe pile element and steel pipe pile cofferdam |
| CN110847047A (en) * | 2019-11-21 | 2020-02-28 | 中交第二航务工程局有限公司 | Open sea bare rock trestle construction method |
| CN110847047B (en) * | 2019-11-21 | 2021-11-26 | 中交二航局第一工程有限公司 | Open sea bare rock trestle construction method |
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