CN106400820A - Cofferdam formed by latched steel tube and concrete combined piles and construction method - Google Patents
Cofferdam formed by latched steel tube and concrete combined piles and construction method Download PDFInfo
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- CN106400820A CN106400820A CN201610882542.5A CN201610882542A CN106400820A CN 106400820 A CN106400820 A CN 106400820A CN 201610882542 A CN201610882542 A CN 201610882542A CN 106400820 A CN106400820 A CN 106400820A
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- pile
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- inner support
- steel pipe
- purlin
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to a cofferdam formed by latched steel tube and concrete combined piles and a construction method. The cofferdam comprises base sealing concrete, a plurality of latched steel tube piles, anchoring piles and an inner support, wherein the lower parts of the latched steel tube piles are sleeved with the anchoring piles; the base sealing concrete is arranged at the top of bed rock; the latched steel tube piles are inserted into the edge of the base sealing concrete and are sequentially connected end to end; each anchoring pile is prepared from reinforced concrete and deeply extends into the bed rock; each latched steel tube pile comprises a steel tube main body, a connecting pipe and a T-shaped connecting part; the inner support comprises a first inner support waist beam and a plurality of second inner support waist beams, wherein the first inner support waist beam and the second inner support waist beams are arranged in sequence from top to bottom. The cofferdam disclosed by the invention has the advantages of realizing dry excavation, solving the problems of difficult underwater blasting excavation and uncontrollable blasting excavation work amount, also solving the problem of relatively large difficulty in quality and safety control, also reducing the use amount of steel and reducing the underwater blasting volume; meanwhile, cofferdam construction and pile foundation construction can be synchronously performed, so the construction cost is lowered, and the construction period is shortened.
Description
Technical field
The present invention relates to cofferdam technical field, it particularly relates to a kind of lock steel pipe and Combined concrete pile cofferdam and
Construction method.
Background technology
In water traditional at present, Support of Foundation Pit Excavation has steel jacket box, steel lifted trunk, steel sheet-pile cofferdam and steel pipe pile cofferdam, in depth
The engineering project of the embedding rock of water, typically adopts double-wall steel cofferdam, but its shortcoming：1st, underwater demolition must be first taken to excavate, then
Sink, so increase the quantities of excavation of foundation pit, the duration is uncontrollable simultaneously；2nd, cofferdam is after excavation of foundation pit is complete, then merogenesis system
Make, time-consuming for sinking, long in time limit；3rd, the steel material using is big.
Therefore, develop one kind and can solve that underwater demolition is difficult and a uncontrollable difficult problem, save the duration simultaneously again, reduce into
This cofferdam, becomes the problem for insider's urgent need to resolve.
Content of the invention
The present invention proposes a kind of lock steel pipe and Combined concrete pile cofferdam, overcomes above-mentioned aspect in existing product
Not enough.
The purpose of the present invention is to be achieved through the following technical solutions：
A kind of lock steel pipe and Combined concrete pile cofferdam, including bottom concrete, some lock steel-pipe piles, are socketed in lock steel
The anchor pile of pile tube bottom and inner support, described bottom concrete is arranged on the top of basement rock, described lock steel-pipe pile grafting
At the edge of bottom concrete and end to end successively, the bottom of described lock steel-pipe pile is concordant with the top of basement rock, described anchor
Gu stake is made up of armored concrete, and this anchor pile gos deep into the inside of this basement rock；Described lock steel-pipe pile includes steel pipe main body, connects
Adapter and the connector of T-shaped, this connecting tube is welded in described steel pipe main body side in the radial direction, and described steel pipe main body is radially
Opposite side on direction welds this connector, and the tube wall of described connecting tube in axial direction offers can be with this connector phase clamping
Gap；Described inner support be welded on lock steel-pipe pile area defined inwall on, described inner support include from top to bottom according to
First inner support waist rail of secondary setting and some second inner support waist rails, described first inner support waist rail includes two be arrangeding in parallel
Root first encloses purlin and uniform welding and encloses some first struts between purlin two first, and described second inner support waist rail includes two
Root second encloses purlin, some second struts, some 3rd struts, two measurements of the chest, waist and hips purlins and some bearing diagonals, described second strut
Be welded on two be arranged in parallel second enclose between purlin, described 3rd strut is vertically arranged with the second strut, and the weldering of the 3rd strut
It is connected between the two measurements of the chest, waist and hips purlins be arrangeding in parallel, described bearing diagonal is near this second intersection position enclosing purlin and measurements of the chest, waist and hips purlin, institute
The one end stating bearing diagonal is welded on second and encloses on purlin, and the other end of this bearing diagonal is welded on measurements of the chest, waist and hips purlin.
Further, described connector is I-steel.
Further, described anchor pile is socketed in steel pipe lower body part.
Further, every first is enclosed purlin, second encloses purlin and measurements of the chest, waist and hips purlin and be welded by two H profile steel.
Further, the top of described bottom concrete is provided with construction bearing platform, and described construction bearing platform bottom is provided with stake
Base, described pile foundation gos deep into the inside of basement rock.
The invention also discloses a kind of lock steel pipe and concrete combined pile cofferdam construction method, comprise the following steps：
The welding of steel pipe main body, connecting tube and connector is completed lock steel-pipe pile to be obtained and checks by S1；
S2 surveying setting-out positioning after, by passed examination lock steel-pipe pile in the way of end to end successively inserting piling on basement rock top
Portion, and anchored using anchor pile；
S3 fills out sand in the tube chamber of connecting tube, and is compacted；
S4 extracts out latching steel pipe and installs inner support with the water within Combined concrete pile cofferdam；
S5 bottom concrete back cover and construction construction bearing platform；
S6 constructs：
S7 construction removes this lock steel pipe and Combined concrete pile cofferdam after finishing.
Further, in S2, after surveying setting-out positioning, pile foundation punching and lock steel-pipe pile inserting piling are carried out, and by rotation
Dig rig to carry out drawing hole in the good steel pipe main body of inserting piling, drawing hole depth is 3.0m under the absolute altitude of steel pipe main body bottom, has drawn one
Pouring reinforcement concrete immediately behind individual hole.
Beneficial effects of the present invention are：Using lock steel pipe and Combined concrete pile cofferdam, can achieve dry dig operation, solve
It is difficult that underwater demolition is excavated, a Blasting Excavation quantities uncontrollable difficult problem；Solve Double-Wall Steel Boxed Cofferdam need to point more piece making point again
The section sinking problem larger to quality and security control difficulty.And latch steel pipe and Combined concrete pile cofferdam opposing double walls steel
Cofferdam decreases steel using amount, decreases underwater demolition amount, can decrease construction cost with pile foundation construction synchronous expansion simultaneously,
Save the construction period.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some enforcement
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also obtain according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the front view of the lock steel pipe described in the embodiment of the present invention and Combined concrete pile cofferdam；
Fig. 2 is the top view of the lock steel pipe according to Fig. 1 and Combined concrete pile cofferdam；
Fig. 3 is the structural representation of the lock steel-pipe pile according to Fig. 1；
Fig. 4 is the structural representation of the anchor pile according to Fig. 1；
Fig. 5 is the flow chart of the lock steel pipe described in the embodiment of the present invention and concrete combined pile cofferdam construction method.
In figure：
1st, basement rock；2nd, latch steel-pipe pile；3rd, anchor pile；4th, connecting tube；5th, connector；6th, the first inner support waist rail；7th, in second
Support wale；8th, first encloses purlin；9th, the first strut；10th, the 3rd strut；11st, measurements of the chest, waist and hips purlin；12nd, bearing diagonal；13rd, back cover coagulation
Soil；14th, construction bearing platform；15th, pile foundation.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained, broadly fall into present invention protection
Scope.
As Figure 1-4, a kind of lock steel pipe described according to embodiments of the present invention and Combined concrete pile cofferdam, including
Bottom concrete 13, some lock steel-pipe piles 2, the anchor pile 3 being socketed in lock steel-pipe pile 2 bottom and inner support, described envelope
Base concrete 13 is arranged on the top of basement rock 1, described lock steel-pipe pile 2 be plugged on bottom concrete 13 edge and successively head and the tail
Connect, the bottom of described lock steel-pipe pile 2 is concordant with the top of basement rock 1, and described anchor pile 3 is made up of armored concrete, and should
Anchor pile 3 gos deep into the inside of this basement rock 1；Described lock steel-pipe pile 2 includes the connector 5 of steel pipe main body, connecting tube 4 and T-shaped, institute
State steel pipe main body side in the radial direction and weld this connecting tube 4, and the opposite side welding in the radial direction of described steel pipe main body
This connector 5, the tube wall of described connecting tube 4 in axial direction offers can be with the gap of this connector 5 phase clamping；Described interior
Support is welded on lock steel-pipe pile 2 area defined inwall, described inner support include setting gradually from top to bottom first in
Support wale 6 and some second inner support waist rails 7, described first inner support waist rail 6 include be arrangeding in parallel two first enclose purlin 8
And uniform welding encloses some first struts 9 between purlin 8 two first, described second inner support waist rail 7 includes two second
Enclose purlin, some second struts, some 3rd strut 10, two measurements of the chest, waist and hips purlins and some bearing diagonals 11, described second strut weldering
Be connected on two be arranged in parallel second enclose between purlin, described 3rd strut 10 is vertically arranged with the second strut, and the 3rd strut 10
It is welded between the two measurements of the chest, waist and hips purlins 11 be arrangeding in parallel, described bearing diagonal 12 second encloses purlin and the intersection of measurements of the chest, waist and hips purlin 11 near this
Position, one end of described bearing diagonal 12 is welded on second and encloses on purlin, and the other end of this bearing diagonal 12 is welded on measurements of the chest, waist and hips purlin 11
On.
In one particular embodiment of the present invention, described connector 5 is I-steel.
In one particular embodiment of the present invention, described anchor pile 3 is socketed in steel pipe lower body part.
In one particular embodiment of the present invention, every first is enclosed purlin 8, second encloses purlin and measurements of the chest, waist and hips purlin 11 by two
H profile steel is welded.
In one particular embodiment of the present invention, the top of described bottom concrete 13 is provided with construction bearing platform 14, institute
State construction bearing platform 14 bottom and be provided with pile foundation 15, described pile foundation 15 gos deep into the inside of basement rock 1.
As shown in figure 5, a kind of lock steel pipe described according to embodiments of the present invention and concrete combined pile cofferdam construction side
Method, comprises the following steps：
The welding of steel pipe main body, connecting tube 4 and connector 5 is completed lock steel-pipe pile 2 to be obtained and checks by S1；
S2 surveying setting-out positioning after, by passed examination lock steel-pipe pile 2 in the way of end to end successively inserting piling push up in basement rock 1
Portion, and anchored using anchor pile 3；
S3 fills out sand in the tube chamber of connecting tube 4, and is compacted；
S4 extracts out latching steel pipe and installs inner support with the water within Combined concrete pile cofferdam；
S5 bottom concrete 13 back cover and construction construction bearing platform 14；
S6 constructs：
S7 construction removes this lock steel pipe and Combined concrete pile cofferdam after finishing.
In one particular embodiment of the present invention, in S2, after surveying setting-out positioning, pile foundation punching and lock steel are carried out
Pile tube inserting piling, and carry out drawing hole in the good steel pipe main body of inserting piling by rotary drilling rig, drawing hole depth is steel pipe main body bottom
3.0m under absolute altitude, has drawn behind a hole pouring reinforcement concrete immediately.
Understand the technique scheme of the present invention for convenience, below by way of above-mentioned to the present invention in specifically used mode
Technical scheme is described in detail.
The material of lock steel-pipe pile 2 is q235, and joint length is 16.6m, in processing, first, will on positioning clamping fixture
φ 720 × 10mm steel pipe main body and φ 159 × 8mm connecting tube 4 and I 18 I-steel（Connector 5）Weld integral, steel pipe master
Commissure between body and connecting tube 4 is welded φ 6mm wire rod in advance with profit welding.Then, the tube wall of connecting tube 4 is adopted vertically
Carry out joint-cutting with automatic gas cutting machine, the wide 6 ± 1mm of open seam, construction requirement gap is uniformly straight, and polishes flat, connector 5 with
Mode grafting from top to bottom enters in connecting tube 4, by the pipe in connecting tube 4 after multiple lock steel-pipe piles 2 link together
Fill out sand in chamber to prevent leak.
Lock steel-pipe pile 2 lower end is placed in basal surfaces.For ensureing that cover layer is washed the monolithic stability in rear cofferdam, every steel
Pile tube is respectively provided with armored concrete anchoring stake 3, anchor pile 3 diameter 0.6m, embedded basement rock 3m, and stretches into steel pipe 4.0m.Cofferdam is put down
Face size 63.48 × 23.86m, arranges four layers of inner support altogether（One layer of first inner support waist rail 6 and 3 layer of second inner support waist rail
7）.Cofferdam crest level is+102.074m, and cofferdam bottom elevation is+85.474m.In first inner support waist rail 6 first encloses purlin 8 and adopts
It is welded with the H profile steel of 2 H500 × 200, the first strut 9 is all using φ 630 × 10mm steel pipe, the second inner support waist rail 7
In second enclose purlin and measurements of the chest, waist and hips purlin 11 is all welded using the H profile steel of 2 H800 × 300, bearing diagonal 12 and the second strut
Using φ 720 × 10mm steel pipe, it is same that the 3rd strut 10 adopts φ 630 × 10mm steel pipe, the first strut 9 and the second strut to be respectively positioned on
On one perpendicular, for ensureing lock steel-pipe pile 2 uniform force, need to be welded with the surrounding enclosing the lock steel-pipe pile 2 that purlin contacts
Stiffener, enclose purlin and lock steel-pipe pile 2 between be connected by bracket form.
In construction：
Lock steel-pipe pile 2 inserting piling in S2 select from upstream cofferdam along bridge to from the beginning of center, then carry out to both sides successively,
Closed up near the stake of downstream angle afterwards.Lock steel-pipe pile 2 is carried out pitching pile, is equipped with the vibration hammer of 120KW using 80t crawler crane.
In pile foundation punching in S2（For anchoring pile foundation 15）While, start to latch the inserting piling of steel-pipe pile 2, and pass through rotary digging
Rig carries out drawing hole in the good steel pipe main body of inserting piling, and drawing bore dia is 0.6m, and drawing hole depth is steel pipe main body bottom absolute altitude
Lower 3.0m, has drawn behind a hole pouring reinforcement concrete immediately（Anchor pile 3）, filling concrete is using the construction of catheter perfusion under water.Steel
Muscle concrete top surface exceeds lock steel-pipe pile 2 bottom surface 4 m, and steel pipe main body is in the concrete of the bottom surface of construction bearing platform 14 following placing intensity C30.
Fill out sand in S3 for ensureing overall seal, prevent river leakage to cofferdam.
In S4, inner support carries out prefabricated while latching the construction of steel-pipe pile 2 inserting piling in place, directly hangs when to be installed
Put in place.Enclose purlin welding first below installation site before lifting and bear the interim short steel corbel enclosing purlin deadweight, then hang and enclose
Purlin is in place.There is space between purlin because part latches inside steel-pipe pile 2 and encloses, the lock steel-pipe pile 2 having space is used short
Bracing members and are welded and fixed on enclosing purlin, especially note cofferdam corner location and enclose the overall fixation of purlin.And will according to design
Seek installation inner support, plate weld that the supported joint position triangle enclosing purlin and short steel is put more energy into, reinforcement of weld quality inspection simultaneously
Look into, form stable inner supporting structure.
When removing inner support after the completion of construction in S8, fill up gravel between cofferdam and the thin seam of construction bearing platform 14, high
Degree exceeds construction bearing platform 14 about 50cm, removes the second inner support waist rail 7 and the construction king-tower of bottom.When the works in cofferdam
After the completion of all removing, then remove remaining inner support.After the completion for the treatment of cofferdam bracing demolition, remove lock steel-pipe pile 2 by root,
Now need to send diver to pull the plug cutting, cut front upper end and must be hung with crane button and safe can carry out imderwater cutting operation.
Must remove by root in work progress, it is to avoid come off and operating personnel is damaged.
In sum, by the technique scheme of the present invention, using lock steel pipe and Combined concrete pile cofferdam, can be real
Now dry dig operation, solve underwater demolition and excavate difficult, the uncontrollable difficult problem of Blasting Excavation quantities；Solve Double-Wall Steel Boxed Cofferdam again
More piece need to be divided to make the segmentation sinking problem larger to quality and security control difficulty.And latch steel pipe and concrete combined pile
Cofferdam opposing double walls steel cofferdam decreases steel using amount, decreases underwater demolition amount, can subtract with pile foundation construction synchronous expansion simultaneously
Lack construction cost, save the construction period.
The present invention is not limited to above-mentioned preferred forms, and anyone can show that under the enlightenment of the present invention other are various
The product of form, however, making any change in its shape or structure, every have skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (7)
1. a kind of lock steel pipe with Combined concrete pile cofferdam it is characterised in that：Including bottom concrete（13）, some lock steel
Pile tube（2）, be socketed in lock steel-pipe pile（2）The anchor pile of bottom（3）And inner support, described bottom concrete（13）It is arranged on
Basement rock（1）Top, described lock steel-pipe pile（2）It is plugged on bottom concrete（13）Edge end to end successively, described
Lock steel-pipe pile（2）Bottom and basement rock（1）Top concordant, described anchor pile（3）It is made up of armored concrete, and this anchoring
Stake（3）Go deep into this basement rock（1）Inside；Described lock steel-pipe pile（2）Including steel pipe main body, connecting tube（4）Connector with T-shaped
（5）, this connecting tube is welded in described steel pipe main body side in the radial direction（4）, and described steel pipe main body in the radial direction another
This connector is welded in side（5）, described connecting tube（4）Tube wall in axial direction offer can be with this connector（5）Phase clamping
Gap；Described inner support is welded on lock steel-pipe pile（2）On area defined inwall, described inner support is included from top to bottom
The the first inner support waist rail setting gradually（6）With some second inner support waist rails（7）, described first inner support waist rail（6）Including
Two first be arranged in parallel are enclosed purlin（8）And uniform welding encloses purlin two first（8）Between some first struts（9）, institute
State the second inner support waist rail（7）Enclose purlin, some second struts, some 3rd struts including two second（10）, two pieces measurements of the chest, waist and hips
Purlin and some bearing diagonals（11）, described second strut be welded on two be arranged in parallel second enclose between purlin, described 3rd strut
（10）It is vertically arranged with the second strut, and the 3rd strut（10）It is welded on the two measurements of the chest, waist and hips purlins be arrangeding in parallel（11）Between, institute
State bearing diagonal（12）Second enclose purlin and measurements of the chest, waist and hips purlin near this（11）Intersection position, described bearing diagonal（12）One end be welded on
Second encloses on purlin, and this bearing diagonal（12）The other end be welded on measurements of the chest, waist and hips purlin（11）On.
2. a kind of lock steel pipe according to claim 1 with Combined concrete pile cofferdam it is characterised in that described connector
（5）For I-steel.
3. a kind of lock steel pipe according to claim 2 with Combined concrete pile cofferdam it is characterised in that described anchor pile
（3）It is socketed in steel pipe lower body part.
4. one kind according to claim 3 latches steel pipe with Combined concrete pile cofferdam it is characterised in that every first is enclosed
Purlin（8）, second enclose purlin and measurements of the chest, waist and hips purlin（11）It is welded by two H profile steel.
5. a kind of lock steel pipe according to claim 4 and Combined concrete pile cofferdam are it is characterised in that described back cover mixes
Solidifying soil（13）Top be provided with construction bearing platform（14）, described construction bearing platform（14）Bottom is provided with pile foundation（15）, described pile foundation
（15）Go deep into basement rock（1）Inside.
6. a kind of lock steel pipe according to claim 5 and concrete combined pile cofferdam construction method are it is characterised in that wrap
Include following steps：
S1 is by steel pipe main body, connecting tube（4）And connector（5）Welding completes lock steel-pipe pile is obtained（2）And check；
After S2 surveying setting-out positioning, by the lock steel-pipe pile of passed examination（2）In the way of end to end successively inserting piling in basement rock
（1）Top, and use anchor pile（3）Anchored；
S3 is in connecting tube（4）Tube chamber in fill out sand, and be compacted；
S4 extracts out latching steel pipe and installs inner support with the water within Combined concrete pile cofferdam；
S5 bottom concrete（13）Back cover and construction construction bearing platform（14）；
S6 constructs：
S7 construction removes this lock steel pipe and Combined concrete pile cofferdam after finishing.
7. a kind of lock steel pipe according to claim 6 with concrete combined pile cofferdam construction method it is characterised in that
In S2, after surveying setting-out positioning, carry out pile foundation punching and lock steel-pipe pile inserting piling, and good in inserting piling by rotary drilling rig
Carry out in steel pipe main body drawing hole, drawing hole depth is 3.0m under the absolute altitude of steel pipe main body bottom, drawn behind a hole pouring reinforcement concrete immediately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882542.5A CN106400820A (en) | 2016-10-10 | 2016-10-10 | Cofferdam formed by latched steel tube and concrete combined piles and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610882542.5A CN106400820A (en) | 2016-10-10 | 2016-10-10 | Cofferdam formed by latched steel tube and concrete combined piles and construction method |
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| CN106400820A true CN106400820A (en) | 2017-02-15 |
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Cited By (10)
| 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 |
| CN106988328A (en) * | 2017-05-22 | 2017-07-28 | 中铁局集团有限公司 | A kind of C c-types opening locked steel tube pilecofferdam and construction method |
| CN107034907A (en) * | 2017-06-09 | 2017-08-11 | 中铁十七局集团第五工程有限公司 | Deep water foundation shallow embedding covering soft rock geology lock steel pipe pile cofferdam construction method |
| CN108193698A (en) * | 2017-12-11 | 2018-06-22 | 上海市基础工程集团有限公司 | Shallow overburden deep water cushion cap sealing maintenance system |
| CN108660941A (en) * | 2018-07-24 | 2018-10-16 | 东北大学 | A kind of lock steel pipe splicing pile cofferdam and construction method |
| 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 |
| CN109469080A (en) * | 2018-12-11 | 2019-03-15 | 中铁五局集团贵州工程有限公司 | A kind of embedding rock steel sheet pile cofferdam structure and its construction method under water |
| CN113653078A (en) * | 2021-09-03 | 2021-11-16 | 中国水利水电第六工程局有限公司 | Steel pipe pile cofferdam structure of reservoir area before dam and construction method thereof |
| CN113737780A (en) * | 2021-09-01 | 2021-12-03 | 中国水利水电第六工程局有限公司 | Underwater rock-socketed concrete pile and construction method thereof |
| CN117166462A (en) * | 2023-09-08 | 2023-12-05 | 湖北省工业建筑集团有限公司 | Rotary drilling pile foundation construction device and method for hard rock combined stratum |
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- 2016-10-10 CN CN201610882542.5A patent/CN106400820A/en active Pending
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| 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 |
| CN106988328A (en) * | 2017-05-22 | 2017-07-28 | 中铁局集团有限公司 | A kind of C c-types opening locked steel tube pilecofferdam and construction method |
| CN107034907A (en) * | 2017-06-09 | 2017-08-11 | 中铁十七局集团第五工程有限公司 | Deep water foundation shallow embedding covering soft rock geology lock steel pipe pile cofferdam construction method |
| CN108193698A (en) * | 2017-12-11 | 2018-06-22 | 上海市基础工程集团有限公司 | Shallow overburden deep water cushion cap sealing maintenance system |
| 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 |
| CN108660941A (en) * | 2018-07-24 | 2018-10-16 | 东北大学 | A kind of lock steel pipe splicing pile cofferdam and construction method |
| CN109469080A (en) * | 2018-12-11 | 2019-03-15 | 中铁五局集团贵州工程有限公司 | A kind of embedding rock steel sheet pile cofferdam structure and its construction method under water |
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| CN113737780A (en) * | 2021-09-01 | 2021-12-03 | 中国水利水电第六工程局有限公司 | Underwater rock-socketed concrete pile and construction method thereof |
| CN113653078A (en) * | 2021-09-03 | 2021-11-16 | 中国水利水电第六工程局有限公司 | Steel pipe pile cofferdam structure of reservoir area before dam and construction method thereof |
| CN117166462A (en) * | 2023-09-08 | 2023-12-05 | 湖北省工业建筑集团有限公司 | Rotary drilling pile foundation construction device and method for hard rock combined stratum |
| CN117166462B (en) * | 2023-09-08 | 2024-05-07 | 湖北省工业建筑集团有限公司 | Rotary drilling pile foundation construction device and method for hard rock combined stratum |
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