CN207211167U - Latch steel pipe and reinforced concrete combination pile cofferdam - Google Patents
Latch steel pipe and reinforced concrete combination pile cofferdam Download PDFInfo
- Publication number
- CN207211167U CN207211167U CN201720511423.9U CN201720511423U CN207211167U CN 207211167 U CN207211167 U CN 207211167U CN 201720511423 U CN201720511423 U CN 201720511423U CN 207211167 U CN207211167 U CN 207211167U
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- China
- Prior art keywords
- steel
- pile
- reinforced concrete
- purlin
- pipe
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 125
- 239000010959 steel Substances 0.000 title claims abstract description 125
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 60
- 239000000203 mixture Substances 0.000 title claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 56
- 238000010276 construction Methods 0.000 claims abstract description 24
- 230000003014 reinforcing Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 3
- 230000001112 coagulant Effects 0.000 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 238000007667 floating Methods 0.000 abstract description 6
- 238000003801 milling Methods 0.000 abstract description 6
- 238000004873 anchoring Methods 0.000 abstract description 5
- 238000009412 basement excavation Methods 0.000 abstract description 5
- 238000005422 blasting Methods 0.000 abstract 1
- -1 lock steel-pipe pile Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 22
- 238000005266 casting Methods 0.000 description 10
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses one kind lock steel pipe and reinforced concrete combination pile cofferdam, including bottom concrete, lock steel-pipe pile, reinforced concrete pile, the lock steel-pipe pile is anchored at the edge of bottom concrete and end to end successively, latches the bottom of steel-pipe pile 50cm at least below inserting piling bottom concrete；The upper socket of reinforced concrete pile is to the bottom of lock steel-pipe pile, and the inside of lower anchor to the bottom concrete of reinforced concrete pile exceeds and bottom concrete bottom；If the inner side that some lock steel-pipe piles surround region is provided with arterial highway steel purlin from top to bottom, inner support is installed in each steel purlin, vertical supporting bar is provided between the adjacent two layers inner support.The utility model solves underwater demolition and excavates hardly possible, the uncontrollable problem of Blasting Excavation quantities, lock steel-pipe pile reduce bottoming concrete thickness because designing armored concrete anchoring stake increase cofferdam anti-floating ability in stake, groove milling workload is reduced, while reduces construction cost.
Description
Technical field
Cofferdam technical field is the utility model is related to, more particularly to a kind of lock steel pipe and reinforced concrete combination pile cofferdam.
Background technology
Support of Foundation Pit Excavation has steel jacket box, steel lifted trunk, steel sheet-pile cofferdam and steel pipe pile cofferdam in water traditional at present, in depth
The engineering project of the embedding rock of water, it is general to use double-wall steel cofferdam, but had the disadvantages that using double-wall steel cofferdam：
1st, first underwater demolition must be taken to excavate, then sunk, so increase the quantities of excavation of foundation pit, while double-wall steel
The anti-floating ability of cofferdam is poor, increases the thickness of bottom concrete.
2nd, for double-wall steel cofferdam after excavation of foundation pit is complete, time-consuming for the assembled sinking of Double-Wall Steel Boxed Cofferdam, has spun out the construction period.
The problem of how solving the above problems as workmen's urgent need to resolve.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of lock steel pipe and reinforced concrete combination pile cofferdam, can
Difficult, the problems such as anti-floating ability of double-wall steel cofferdam is poor, and the thickness of bottom concrete is excessive is excavated to solve underwater demolition, simultaneously
Reduce construction cost, save the construction period.
Technical scheme is used by the utility model：
One kind lock steel pipe and reinforced concrete combination pile cofferdam, including bottom concrete, lock steel-pipe pile, armored concrete
Stake, the lock steel-pipe pile are anchored at the edge of bottom concrete and end to end successively, and the bottom for latching steel-pipe pile is extremely
50cm below few inserting piling bottom concrete；The upper socket of the reinforced concrete pile mixes to the bottom of lock steel-pipe pile, reinforcing bar
The inside of lower anchor to the bottom concrete of solidifying native stake exceeds and bottom concrete bottom；Some lock steel-pipe piles are enclosed
If being provided with arterial highway steel purlin from top to bottom into the inner side in region, inner support is installed in each steel purlin, it is described adjacent
Vertical supporting bar is provided between two layers of inner support；Mixed with the reinforced concrete pile of the lock steel-pipe pile socket section for the first reinforcing bar
Native stake is coagulated, the reinforced concrete pile of its underpart is the second reinforced concrete pile, and the stake section of first reinforced concrete pile is big
In the stake section of the second reinforced concrete pile, and the first reinforced concrete pile stake it is long be more than the second armored concrete stake it is long；
The stake section of first reinforced concrete pile is 1000mm, and the stake section of the second reinforced concrete pile is 800mm, the second reinforcing bar
The effective anchorage depth of concrete-pile is not less than 4.5m.
Preferably, the steel purlin and inner support include five layers successively from top to bottom, respectively the first steel purlin and the
Propped up in one inner support, the second steel purlin and the second inner support, the 3rd steel purlin and the 3rd inner support, the 4th steel purlin and the 4th
Support, the 5th steel purlin and my the 5th inner support, the first steel purlin, the second steel purlin, the 3rd steel purlin, the 4th steel purlin are equal
Lock steel-pipe pile and the top on the inside of reinforced concrete pile socket section are welded on, the 5th steel purlin is welded on lock steel-pipe pile
With the inner side of reinforced concrete pile socket section.
Preferably, the first steel purlin and the second steel purlin use the H profile steel of 2HN700 × 300, propped up in first
Support and the second inner support use 630 × 10mm of φ steel pipe；3rd steel purlin, the 4th steel purlin and the 5th steel purlin are adopted
With the H profile steel of 3HN700 × 300, the 3rd inner support, the 4th bracing members and the 5th bracing members are using 820 × 12mm's of φ
Steel pipe.
Preferably, being provided with construction bearing platform at the top of the bottom concrete, the construction bearing platform bottom is provided with stake
Base, the pile foundation pass from the bottom of bottom concrete.
Preferably, the specification of the lock steel-pipe pile is 1000*12mm, using Q345 material steel.
The utility model has the advantages that compared with prior art：
1st, the utility model combines pile cofferdam using lock steel pipe and reinforced concrete, solves underwater demolition and excavates hardly possible, quick-fried
Break and dig the uncontrollable problem of quantities, lock steel-pipe pile is because designing armored concrete anchoring stake increase cofferdam anti-floating energy in stake
Power, reduce bottoming concrete thickness, reduce groove milling workload, lock steel pipe pile cofferdam installation is (containing armored concrete in stake
Anchor pile driving construction, purlin construction) sink and (construct containing purlin) than Double-Wall Steel Boxed Cofferdam assembly to saving 50~60 days, while reduce and apply
Work cost, has saved the construction period.
2nd, the utility model in the inside and outside reinforced concrete pile using piles with different section of lock steel-pipe pile by both having increased
The ability of armored concrete anchoring pile cofferdam anti-floating, while reduce construction cost, save the time sunk.
Brief description of the drawings
Fig. 1 is the structural representation of the lock steel pipe and reinforced concrete combination pile cofferdam described in the utility model sheet；
Shown in figure：1st, bottom concrete；2nd, steel-pipe pile is latched；3rd, reinforced concrete pile；3.1st, the first armored concrete
Stake；3.2nd, the second reinforced concrete pile；4th, the first inner support；5th, the second inner support；6th, the 3rd inner support；7th, the 4th inner support；
8th, the 5th inner support；9th, the first steel purlin；10th, the second steel purlin；11st, the 3rd steel purlin；12nd, the 4th steel purlin；13rd, the 5th
Steel purlin, 14, vertical supporting bar；15th, construction bearing platform；16th, pile foundation.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment provides a kind of lock steel pipe and reinforced concrete combination pile cofferdam, including envelope
Base concrete 1, lock steel-pipe pile 2, reinforced concrete pile 3, the lock steel-pipe pile 2 are anchored at the edge of bottom concrete 1 simultaneously
It is end to end successively, bottom at least inserting piling bottom concrete 50cm below 1 of the lock steel-pipe pile 2；The armored concrete
To the bottom of lock steel-pipe pile 2, the inside of lower anchor to the bottom concrete 1 of reinforced concrete pile 3 surpasses the upper socket of stake 3
Go out and the bottom of bottom concrete 2；If the inner side that some lock steel-pipe piles 2 surround region is provided with arterial highway from top to bottom
Steel purlin (including the first steel purlin 9, the second steel purlin 10, the 3rd steel purlin 11, the 4th steel purlin 12 and the 5th steel purlin
13), inner support (including the first inner support 4, the second inner support 5, the 3rd inner support the 6, the 4th are installed in each steel purlin
The inner support 8 of inner support 7 and the 5th), vertical supporting bar 14 is provided between the adjacent two layers inner support.
As the preferred structure of the present embodiment, the reinforced concrete pile 3 that section is socketed with lock steel-pipe pile 2 is the first reinforcing bar
Concrete-pile 3.1, the reinforced concrete pile 3 of its underpart are the second reinforced concrete pile 3.2, first reinforced concrete pile
3.1 stake section is more than the stake section of the second reinforced concrete pile 3.2, and the stake of the first reinforced concrete pile 3.1 long is more than the
The stake of two armored concrete 3.2 is long, and in the present embodiment, the specification of lock steel-pipe pile 2 is 1000*12mm, using Q345 material steel
Material, the stake section of the first reinforced concrete pile 3.1 is 1000mm, and the stake section of the second reinforced concrete pile 3.2 is 800mm, the
Effective anchorage depth of two reinforced concrete piles 3.2 is not less than 4.5m.
Shown in Figure 1, as the preferred structure of the present embodiment, steel purlin and inner support include five successively from top to bottom
Layer, respectively the first steel purlin 9 and the first inner support 4, the second steel purlin 10 and the second inner support 5, the 3rd steel purlin 11 and the
Three inner supports 6, the 4th steel purlin 12 and the 4th inner support 7, the 5th steel purlin 13 and my the 5th inner support 8, wherein, the first steel
Purlin 9, the second steel purlin 10, the 3rd steel purlin 11, the 4th steel purlin 12 are welded on lock steel-pipe pile 2 and reinforced concrete pile
Top on the inside of 3 socket sections, the 5th steel purlin 13 are welded on lock steel-pipe pile 2 and are socketed the interior of section with reinforced concrete pile 3
Side.Further, the first steel purlin 9 and the second steel purlin 10 use the H profile steel of 2HN700 × 300, the first inner support 4
Used with the second inner support 5Steel pipe, the 3rd steel purlin 11, the 4th steel purlin 12 and the 5th steel enclose
Purlin 13 uses the H profile steel of 3HN700 × 300, and the 3rd inner support 6, the 4th bracing members 7 and the 5th bracing members 8 useSteel pipe.Construction bearing platform 15 is provided with the top of bottom concrete 1, the bottom of construction bearing platform 15 is provided with
Pile foundation 16, the pile foundation 16 pass from the bottom of bottom concrete 1.
In work progress, lock steel-pipe pile 2 uses following 0.5m at the top of churning driven drilling groove milling to bottom concrete 1,
Squeezed into steel-pipe pile 2 is latched to notch bottom journey with vibration hammer, bored using 360 churning drivens by rootHole milling is native except thick circle gravel,
Lock steel-pipe pile 2 is installed by root, and bored in fore shaft steel-pipe pile 2Hole, irrigate reinforced concrete pile 3.In lock steel
The direction across bridge spacing 1.26m of pile tube 2, along bridge to spacing 1.254m.The supervisor of fore shaft steel-pipe pile 2 usesSteel pipe,
First and second steel purlin (9,10) level is 2HN700 × 300H shaped steel, and first and second inner support (4,5) isSteel
Pipe.Th, three, four, five purlins (111,12,13) level be 3HN700 × 300H shaped steel, third and fourth, five inner supports (6,7,8)
For φ 820 × 12mm steel pipes.
The utility model embodiment carries the lock steel pipe and concrete combined pile cofferdam construction method, including following step
Suddenly：
Step S1：Construction lock steel-pipe pile 2, the installation lock steel around groove milling construction in the construction platform at the top of steel pile casting
Pile tube 2, and inserting piling is carried out to lock steel-pipe pile 2, until squeezing into rock stratum untill inserting piling is motionless, then construct and bore in steel-pipe pile
Hole carries out reinforced concrete pile 3 and irrigated, and the filling C30 concrete latched in steel-pipe pile 2 must be higher by riverbed face 50cm.
Step S2：The clear base of low water level, after the interior filling concrete of lock steel-pipe pile reaches intensity, clear base is carried out in low water level, clearly
To ensure that head difference is no more than 50cm inside and outside cofferdam during base, inner side water level is+158.5m, and riverbed is cleared up to back cover concrete bottom
Portion, to ensure that the attached soil in stake is cleaned out during clear base, to ensure that the cohesive force of stake and bottom concrete meets to require.
Step S3：Bottom concrete is poured, is taken out in low water level underwater casting C30 back cover concretes, casting process to outside cofferdam
Water, it is ensured that head difference is no more than 50cm inside and outside cofferdam.
Step S4：Purlin and inner support are installed, after bottom concrete reaches design strength, cut steel pile casting, low water level exists
Bracket is welded on pile tube, assembled purlin and inner support on bracket, ensures that head difference is no more than 50cm inside and outside cofferdam；
In step s 4, purlin is installed and the process of inner support is as follows：
S4.1, the first purlin of installation and the first inner support, cut steel pile casting, are welded below low water level+158m water levels on pile tube
Bracket is connect, assembled first purlin and the first inner support on bracket；
S4.2, the second purlin and the second inner support are installed, are drawn water in cofferdam to absolute altitude+155.5, steel pile casting is cut off, in pipe
Bracket is welded in stake, assembled second purlin and the second inner support on bracket；
S4.3, the 3rd purlin and the 3rd inner support are installed, are drawn water in cofferdam to absolute altitude+152.5, steel pile casting is cut off, in pipe
Bracket is welded in stake, assembled 3rd purlin and the 3rd inner support on bracket；
S4.4, the 4th purlin and the 4th inner support are installed, are drawn water in cofferdam to absolute altitude+149.5, steel pile casting is cut off, in pipe
Bracket is welded in stake, assembled 4th purlin and the 4th inner support on bracket；
S4.5, the 5th purlin and the 5th inner support are installed, are drawn water in cofferdam to absolute altitude+146.5, steel pile casting is cut off, in pipe
Bracket is welded in stake, assembled 5th purlin and the 5th inner support on bracket.
Certainly, in step S4.1, low water level+158m water levels, be for working water level+160m, wherein, step
The absolute altitude that draws water in S4.2, S4.3, S4.4, S4.5 be for low water level+158m, reality work progress in, can root
According to the absolute altitude for needing each stage in set-up procedure S4 of construction.
Step S5：Draw water to back cover concrete top, drawn water in cofferdam to back cover concrete top, cut off steel pile casting, cut pile crown, clear base；
Step S6：Construction bearing platform, assembling reinforcement, one-time-concreting cushion cap, Delta of entertaining is to after intensity, to cushion cap and steel-pipe pile
Between recharge sand fill closely knit, recharge sand height 4m, then to pour C30 concrete 0.5m high；
Step S7：In low water level, in the case of the inside and outside no head difference in cofferdam, cofferdam is cut and disassembled.
The utility model is solved underwater demolition and is excavated difficult, explosion using lock steel pipe and reinforced concrete combination pile cofferdam
The uncontrollable problem of excavation project amount, lock steel-pipe pile increase cofferdam anti-floating ability because designing armored concrete anchoring stake in stake,
Reduce bottoming concrete thickness, reduce groove milling workload, the installation of lock steel pipe pile cofferdam is (containing armored concrete anchoring in stake
Pile driving construction, purlin construction) sink and (construct containing purlin) than Double-Wall Steel Boxed Cofferdam assembly to saving 50~60 days, while reduce and be constructed into
This, has saved the construction period.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (5)
1. one kind lock steel pipe and reinforced concrete combination pile cofferdam, including bottom concrete, lock steel-pipe pile, armored concrete
Stake, it is characterised in that：The lock steel-pipe pile is anchored at the edge of bottom concrete and end to end successively, the lock steel pipe
The bottom of stake 50cm at least below inserting piling bottom concrete；The upper socket of the reinforced concrete pile to lock steel-pipe pile under
Portion, the inside of lower anchor to the bottom concrete of reinforced concrete pile exceeds and bottom concrete bottom；Some locks
If the inner side that steel-pipe pile surrounds region is provided with arterial highway steel purlin from top to bottom, interior branch is installed in each steel purlin
Support, vertical supporting bar is provided between the adjacent two layers inner support；With the reinforced concrete pile of the lock steel-pipe pile socket section
For the first reinforced concrete pile, the reinforced concrete pile of its underpart is the second reinforced concrete pile, first armored concrete
The stake section of stake is more than the stake section of the second reinforced concrete pile, and long second reinforcing bar that is more than of stake of the first reinforced concrete pile mixes
The stake for coagulating soil is long；The stake section of first reinforced concrete pile is 1000mm, and the stake section of the second reinforced concrete pile is
800mm, the effective anchorage depth of the second reinforced concrete pile are not less than 4.5m.
2. lock steel pipe according to claim 1 and reinforced concrete combination pile cofferdam, it is characterised in that：The steel purlin and
Inner support includes five layers successively from top to bottom, is propped up in respectively the first steel purlin and the first inner support, the second steel purlin and second
Support, the 3rd steel purlin and the 3rd inner support, the 4th steel purlin and the 4th inner support, the 5th steel purlin and my the 5th inner support, institute
State the first steel purlin, the second steel purlin, the 3rd steel purlin, the 4th steel purlin and be welded on lock steel-pipe pile and reinforced concrete pile
The top being socketed on the inside of section, the 5th steel purlin are welded on lock steel-pipe pile and the inner side of reinforced concrete pile socket section.
3. lock steel pipe according to claim 2 and reinforced concrete combination pile cofferdam, it is characterised in that：First steel encloses
Purlin and the second steel purlin use the H profile steel of 2HN700 × 300, and the first inner support and the second inner support use 630 × 10mm of φ
Steel pipe；3rd steel purlin, the 4th steel purlin and the 5th steel purlin use 3HN700 × 300 H profile steel, the described 3rd
Inner support, the 4th bracing members and the 5th bracing members use 820 × 12mm of φ steel pipe.
4. lock steel pipe according to claim 1 and reinforced concrete combination pile cofferdam, it is characterised in that：The back cover coagulation
The top of soil is provided with construction bearing platform, and the construction bearing platform bottom is provided with pile foundation, and the pile foundation is from the bottom of bottom concrete
Pass.
5. lock steel pipe according to claim 1 and reinforced concrete combination pile cofferdam, it is characterised in that：The lock steel pipe
The specification of stake is 1000*12mm, using Q345 material steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720511423.9U CN207211167U (en) | 2017-05-08 | 2017-05-08 | Latch steel pipe and reinforced concrete combination pile cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720511423.9U CN207211167U (en) | 2017-05-08 | 2017-05-08 | Latch steel pipe and reinforced concrete combination pile cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207211167U true CN207211167U (en) | 2018-04-10 |
Family
ID=61810020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720511423.9U Expired - Fee Related CN207211167U (en) | 2017-05-08 | 2017-05-08 | Latch steel pipe and reinforced concrete combination pile cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207211167U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958254A (en) * | 2017-05-08 | 2017-07-18 | 中铁七局集团第四工程有限公司 | Latch steel pipe and reinforced concrete combination pile cofferdam and its construction method |
-
2017
- 2017-05-08 CN CN201720511423.9U patent/CN207211167U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106958254A (en) * | 2017-05-08 | 2017-07-18 | 中铁七局集团第四工程有限公司 | Latch steel pipe and reinforced concrete combination pile cofferdam and its construction method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180410 Termination date: 20210508 |
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| CF01 | Termination of patent right due to non-payment of annual fee |