CN115142448A - Steel-pipe pile cofferdam - Google Patents
Steel-pipe pile cofferdam Download PDFInfo
- Publication number
- CN115142448A CN115142448A CN202210877833.0A CN202210877833A CN115142448A CN 115142448 A CN115142448 A CN 115142448A CN 202210877833 A CN202210877833 A CN 202210877833A CN 115142448 A CN115142448 A CN 115142448A
- Authority
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- China
- Prior art keywords
- steel
- pipe pile
- lock catch
- cofferdam
- locking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- 238000010276 construction Methods 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 abstract description 6
- 238000003466 welding Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- 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)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to the technical field of cofferdams, and discloses a steel pipe pile cofferdam which comprises a cofferdam body formed by sequentially connecting and enclosing a plurality of lock catch steel pipe piles, wherein a supporting mechanism used for supporting the cofferdam body is arranged on the inner side of the cofferdam body, a material feeding bag is arranged in a lock catch groove between every two adjacent lock catch steel pipe piles, and concrete is poured into the material feeding bag. According to the invention, the feeding bag is placed in the lock catch groove through the feeding bag, the concrete is injected into the feeding bag through the injection pipe, and the direct contact between the concrete and water is avoided, so that slurry is prevented from being dispersed underwater, the grouting is easier, multiple times of injection is not needed, the concrete can be well solidified in the lock catch groove through one-time injection, the labor intensity of operators is reduced, and the operation cost is reduced, so that the problems that the concrete injected into the lock catch is easy to be dispersed underwater, the injection is difficult, and the water stop construction cost is higher in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of cofferdams, in particular to a steel pipe pile cofferdam.
Background
In the bridge foundation construction, a cofferdam with a proper structure type is selected to enclose and block according to the characteristics of a main project and the hydrological and geological conditions of the position of the foundation. The cofferdam is mainly classified into a steel sheet pile cofferdam, a lock catch steel pipe pile cofferdam, a steel box cofferdam, a double-wall steel cofferdam and the like according to the structure.
At present, the lock catch steel pipe pile cofferdam is used more, has the characteristics of high strength, good waterproof performance, easy installation and the like, can form cofferdams with various shapes according to requirements, can be repeatedly used for many times, and has wide application.
The lock catch steel pipe pile cofferdam is suitable for riverbeds with riverbed covering layers containing a large amount of floating gravels or underwater obstacles, and other types of steel cofferdams are difficult to sink; the structure of hasp steel-pipe pile cofferdam among the prior art generally includes that a plurality of hasp steel-pipe piles connect gradually and form the cofferdam of certain shape, the inboard of cofferdam is provided with around the ring and encloses the purlin, the inboard corner of purlin is provided with the gusset, enclose and be connected with supporting beam between the purlin inboard, in the work progress, need be according to the shape of predesigned with the hasp steel-pipe pile, squeeze into the riverbed rock one by one in, then enclose the purlin, gusset and supporting beam install in proper order, and support the cofferdam inboard, in order to carry out better ground stagnant water to the hasp steel-pipe pile, need be in the hasp department pouring concrete of hasp steel-pipe pile.
The cofferdam of the technical scheme can be used for better water insulation of a construction site generally, and the following problems still exist: when the hasp cast-in-place concrete to hasp steel-pipe pile, need go into the pipe in the recess that the hasp formed, then let in the concrete in the pipe, the concrete upwards fills from the recess bottom gradually, but because the hasp be with the river intercommunication, the river has certain velocity of flow, the concrete body is broken up easily under water, it is comparatively difficult to fill, when needing to select river velocity of flow when slower, it can fill successfully to carry out a lot of times to fill, stagnant water operation is comparatively consuming time, stagnant water operating efficiency is lower, the concrete is extravagant more, construction cost is great.
Disclosure of Invention
The invention aims to provide a steel pipe pile cofferdam to solve the problems that concrete poured in a lock catch is easy to be dispersed underwater, pouring is difficult and water stop construction cost is high in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a steel-pipe pile cofferdam, includes to connect gradually by a plurality of hasp steel-pipe piles and encloses the cofferdam body that closes and form, and cofferdam body inboard is provided with the supporting mechanism who is used for supporting the cofferdam body, is provided with the feeding bag in the hasp recess between two adjacent hasp steel-pipe piles, has filled the concrete in the feeding bag.
The technical principle of the invention is as follows:
the invention discloses a cofferdam, which is characterized in that a material feeding bag is arranged, the diameter of the material feeding bag is slightly larger than that of a lock catch groove, the material feeding bag is filled with slurry for plugging, the material feeding bag is wrapped and placed in the lock catch groove, a slurry injection pipe extends into the bottom end of the material feeding bag, then slurry injection is carried out, the slurry injection pipe is lifted while slurry injection is carried out until the material feeding bag is filled, concrete has certain fluidity, and the material feeding bag can be tightly attached to all positions of the lock catch groove.
The invention has the beneficial effects that:
1. compared with the prior art, the feeding bag is placed in the lock catch groove through the feeding bag, the concrete is injected into the feeding bag through the injection pipe, and the concrete is prevented from being directly contacted with water, so that the grout is prevented from being dispersed under water, the grouting is easier, the concrete can be well solidified in the lock catch groove through one-time grouting without multiple times of grouting, the labor intensity of operators is reduced, and the operation cost is reduced.
2. Through the setting of income pocket, the concrete solidifies the back, can make and form the isolation layer between concrete and the hasp recess, makes things convenient for the later stage to pull out the steel-pipe pile, only need destroy the income pocket can, labour saving and time saving more.
Further, the feeding bag is a canvas bag.
The filter holes are uniformly distributed in the surface of the sailcloth bag, so that gas can be discharged when grouting is convenient, a large amount of river water can be prevented from directly entering the feeding bag, over-dilution of concrete is avoided, and the problem of serious water collection in later-stage concrete solidification is prevented.
Further, the concrete comprises the following components in parts by weight: 350 parts of bentonite: 200 parts of cement: 40 parts of an expanding agent: 1000 parts of water.
The concrete with the components has lower strength and higher fluidity, can fill the ground lock catch grooves quickly and better, and has the main purposes of water stopping, low strength requirement and cost reduction.
Furthermore, at least one lock end part of two locks of the two adjacent lock steel pipe piles is in sealing connection with the other lock end part.
Through sealing connection, make the hasp recess form confined logical groove to can avoid the lateral part to intake and cause the influence of dashing and loosing to pouring into the concrete, improve and fill the quality.
Furthermore, the lock catch of the lock catch steel pipe pile is a CT lock catch, the CT lock catch comprises a C-shaped lock catch and a T-shaped lock catch, the C-shaped lock catch and the T-shaped lock catch are respectively connected to two symmetrical sides of the lock catch steel pipe pile, first rubber pads are bonded to two ends of the C-shaped lock catch, and the two first rubber pads are abutted to the long side sections of the T-shaped lock catch.
Through inserting two short edge sections of T shape hasp into C shape hasp inslot, can make the first rubber pad of two tip of C shape hasp and the long edge section of T shape hasp offset to can make hasp recess side seal, prevent that river from hasp recess lateral part from scouring away the concrete.
Further, the two lock ends of two adjacent lock steel pipe piles are mutually connected in a sealing manner.
Carry out sealing connection each other through two hasp tip for the hasp recess forms the space rule more, and can make the pan feeding be changeed and be full of whole space.
Further, the hasp of hasp steel-pipe pile includes first hasp and second hasp, and first hasp and second hasp are connected respectively in the both sides of hasp steel-pipe pile symmetry, and first hasp includes the hook plate of two symmetrical welding on the hasp steel-pipe pile, and the second hasp is T shape hasp, and the tip fixedly connected with of the both sides section of T shape hasp is used for inserting the picture peg of hook plate hook groove department, and hook plate and picture peg all are connected with the second rubber pad, and two second rubber pads offset.
Insert the hook groove department of hook plate through the picture peg to offset through two second rubber pads, make hasp recess lateral part seal, the hasp recess will form more regular space also, the income pocket of being convenient for is full of whole space.
Further, when installing the hasp steel-pipe pile, need use the leading truck, sliding connection has the limiting plate on the leading truck, is connected with on the limiting plate to be used for fixing the fixed establishment on the leading truck with the limiting plate.
Compared with the prior art, the direct welding limiting plate, after installing a hasp steel-pipe pile, still need cut the limiting plate, in order to install next hasp steel-pipe pile, need to change a new limiting plate and weld, waste time and energy, the cost is higher, and this application, the limiting plate can slide the limiting plate to the spacing department of needs, fix the limiting plate on the leading truck through fixed establishment, can the easy to assemble hasp steel-pipe pile, when installing next hasp steel-pipe pile, also only need again slide the limiting plate can, need not to cut again or weld new limiting plate, high efficiency, save the cost more.
Drawings
Fig. 1 is a top view of a steel pipe pile cofferdam according to an embodiment of the invention;
FIG. 2 is a schematic connection diagram of two locking steel pipe piles in FIG. 1;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is a schematic view illustrating installation of a locking steel pipe pile through a guide frame according to an embodiment of the present invention;
FIG. 5 is a schematic view of a limiting plate mounted on the guide frame;
fig. 6 is a right side view of the limiting plate of fig. 5;
fig. 7 is a schematic connection diagram of two steel-pipe piles of the steel-pipe pile cofferdam according to the second embodiment of the invention;
fig. 8 is an enlarged schematic view at B in fig. 7.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the locking device comprises a locking steel pipe pile 1, a T-shaped lock 11, a C-shaped lock 12, a canvas bag 13, concrete 14, a second lock 15, a first rubber pad 16, a first lock 17, a second rubber pad 18, a guide frame 2, H-shaped steel 21, an enclosing purlin 3, a limiting plate 4, a connecting block 41, a screw rod 42, a driving sleeve 43 and a groove 44.
Embodiment one, see fig. 1-6 in particular:
the utility model provides a steel-pipe pile cofferdam, include to connect gradually by a plurality of hasp steel-pipe piles 1 and enclose the cofferdam body that closes and form, the cofferdam body is the rectangle, cofferdam body inboard is provided with the supporting mechanism who is used for supporting the cofferdam body, the supporting mechanism is including the bracket of welding on a plurality of hasp steel-pipe piles 1, weld on the bracket and enclose purlin 3, the adjacent gusset that encloses welds between the purlin 3, enclose a plurality of supporting beams of 3 length direction equipartitions of purlin along enclosing between the purlin 3 for two relatively long, hang in the hasp recess between two adjacent hasp steel-pipe piles 1 and put sack 13.
The lock catch of the lock catch steel pipe pile 1 is a CT lock catch, the CT lock catch comprises a C-shaped lock catch 12 and a T-shaped lock catch 11, the C-shaped lock catch 12 and the T-shaped lock catch 11 are respectively welded on two symmetrical sides of the lock catch steel pipe pile 1, first rubber pads 16 are bonded on two ends of the C-shaped lock catch 12, two short side sections of the T-shaped lock catch 11 extend into grooves of the C-shaped lock catch 12, and the two first rubber pads 16 are abutted to long side sections of the T-shaped lock catch 11.
The specific implementation is as follows:
when installation hasp steel-pipe pile 1, need use leading truck 2, leading truck 2 includes two H shaped steel 21, weld two HH shaped steel 21 on the landing stage support pile, sliding connection connects limiting plate 4 between two H shaped steel 21, open the recess 44 that has two symmetries on the limiting plate 4, through two recess 44 locks on the pterygoid lamina of two HH shaped steel 21 inboards, be connected with the fixed establishment that is used for fixing limiting plate 4 on leading truck 2 on the limiting plate 4, fixed establishment is including welding two connecting blocks 41 on limiting plate 4, open the threaded hole on the connecting block 41, threaded hole female connection has lead screw 42, threaded connection has same driving sleeve 43 between two lead screws, rotate driving sleeve 43, two lead screw 42 rotate, and can push up tightly between two H shaped steel 21, and make limiting plate 4 fix a position, lower hasp steel-pipe pile 1, then insert and beat.
After the lock catch steel pipe pile 1 is installed, sand and concrete are poured into the steel pipe pile 14; the method comprises the following steps of using a crane to lift a sailcloth bag 13 into a lock catch groove, enabling the diameter of the sailcloth bag 13 to be slightly larger than the shape of the lock catch groove, enabling the length of the sailcloth bag 13 to be slightly longer than the length of the lock catch groove, hanging the sailcloth bag 13 in the lock catch groove through a steel wire, then introducing a grouting pipe into the sailcloth bag 13, introducing the grouting pipe into the bottom of the sailcloth bag 13, and then pouring concrete 14, wherein the concrete 14 comprises the following components in parts by weight: 350 parts of bentonite: 200 parts of cement: 40 parts of an expanding agent: 1000 parts of water; after the pouring, the sailcloth bag 13 is filled with the concrete 14, the sailcloth bag 13 is attached to the lock catch groove, the water stopping effect is achieved well, on the other hand, an isolation layer is formed by the sailcloth bag 13 and the lock catch groove, and the lock catch steel pipe pile 1 can be pulled out conveniently in the later period.
When the strength of the bottom sealing concrete 14 reaches more than 90% of the design strength, water pumping is started to be carried out in the cofferdam body. In the process of pumping water, observing the deformation condition of the cofferdam body structure at any time, measuring and paying off, determining the bottom elevation of the purlin 3 by using a level gauge, marking, installing corresponding layer supports after pumping water to the designed elevation in the cofferdam body every time, welding corbels on the inner sides of the lock catch steel pipe piles 1, hoisting the purlin 3 in place in sections, performing equal-strength welding connection, welding steel plate batten plates at joints, manufacturing the purlin 3 by adopting double-spliced HH-steel 21 or I-steel, wherein the purlin 3 is manufactured by requiring that double-spliced flanges are aligned and leveled, welding adopts intermittent welding to improve the integrity of the double-spliced I-steel purlin 3, the purlin 3 structure belongs to a bending component, the requirements of axis, verticality and horizontal deviation at two ends are ensured during assembling, and the purlin 3 is prevented from being eccentrically pressed, the end part of the purlin 3 is rigidly connected with a right angle, a fillet weld brace (triangular plate) is welded, the welding quality meets the standard requirement, a single supporting beam is integrally assembled in the field, after the single supporting beam is checked and accepted, the supporting beam is ready to be hoisted, the supporting beam is connected with the purlin 3 in a welding mode, after the supporting beam is hoisted in place, the axial position of the supporting beam is rechecked, the height difference of two ends of the supporting beam is accurate in place, the end head of the supporting beam is welded with the purlin 3, stiffening plate welding needs to be added at the joint for increasing the joint strength, reasonable installation sequence and process are formulated for installing the purlin 3 and the inner supporting beam, the construction sequence is consistent with the design working condition, the elevation and the plane position are controlled during installation, the purlin 3 is closely attached to a steel pipe pile, and the stress safety requirement of the purlin 3 and the inner supporting structure is met.
Example two, see fig. 7 and 8 in particular:
on the basis of the first embodiment, the difference with the first embodiment lies in that the hasp of hasp steel-pipe pile 1 includes first hasp 17 and second hasp 15, first hasp 17 and second hasp 15 weld respectively in the both sides of hasp steel-pipe pile 1 symmetry, first hasp 17 includes two hook plates of symmetry welding on hasp steel-pipe pile 1, second hasp 15 is T shape hasp, the tip integrated into one piece of two minor face sections of T shape hasp has the picture peg that is used for inserting hook plate hook groove department, hook plate and picture peg all bond second rubber pad 18, two second rubber pads 18 offset.
When the lock catch steel pipe pile 1 is installed, after the two hook plates and the T-shaped lock catch 11 are closed, the lock catch steel pipe pile 1 is inserted and driven, the lock catch steel pipe pile 1 is installed in sequence, then the canvas bag 13 is put into the lock catch groove, concrete 14 is poured, and water stopping construction is well conducted.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several variations and modifications can be made, which should also be considered as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. The utility model provides a steel-pipe pile cofferdam, includes to connect gradually by a plurality of hasp steel-pipe piles and encloses the cofferdam body that closes and form, and cofferdam body inboard is provided with the supporting mechanism who is used for supporting the cofferdam body, and its characterized in that is provided with the feeding bag in the hasp recess between two adjacent hasp steel-pipe piles, and the pouring has the concrete in the feeding bag.
2. The steel pipe pile cofferdam of claim 1, wherein the feed bag is a canvas bag.
3. The steel pipe pile cofferdam of claim 2, wherein the concrete comprises the following components in parts by weight: 350 parts of bentonite: 200 parts of cement: 40 parts of an expanding agent: 1000 parts of water.
4. The steel-pipe pile cofferdam of claim 1, wherein at least one end of each of the two shackles of two adjacent shackles is connected with the other end of the other shackles in a sealing manner.
5. The steel-pipe pile cofferdam of claim 4, wherein the locking of the locking steel-pipe pile is a CT locking, the CT locking comprises a C-shaped locking and a T-shaped locking, the C-shaped locking and the T-shaped locking are respectively connected to two symmetrical sides of the locking steel-pipe pile, first rubber pads are bonded to two ends of the C-shaped locking, and the two first rubber pads abut against long side sections of the T-shaped locking.
6. The steel-pipe pile cofferdam of claim 4, wherein two locking ends of two adjacent locking steel-pipe piles are hermetically connected with each other.
7. The steel-pipe pile cofferdam of claim 6, wherein the lock of the lock-catch steel-pipe pile comprises a first lock catch and a second lock catch, the first lock catch and the second lock catch are respectively connected to two symmetrical sides of the lock-catch steel-pipe pile, the first lock catch comprises two hook plates symmetrically welded on the lock-catch steel-pipe pile, the second lock catch is a T-shaped lock catch, the end parts of two short side sections of the T-shaped lock catch are fixedly connected with inserting plates inserted into hook grooves of the hook plates, the hook plates and the inserting plates are both connected with second rubber pads, and the two second rubber pads are abutted.
8. The steel-pipe pile cofferdam of claim 7, wherein when installing the locking steel-pipe pile, a guide frame is needed, a limiting plate is connected on the guide frame in a sliding manner, and a fixing mechanism for fixing the limiting plate on the guide frame is connected on the limiting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877833.0A CN115142448A (en) | 2022-07-25 | 2022-07-25 | Steel-pipe pile cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210877833.0A CN115142448A (en) | 2022-07-25 | 2022-07-25 | Steel-pipe pile cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115142448A true CN115142448A (en) | 2022-10-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210877833.0A Pending CN115142448A (en) | 2022-07-25 | 2022-07-25 | Steel-pipe pile cofferdam |
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| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182717A (en) * | 2007-07-30 | 2008-05-21 | 中铁十八局集团有限公司 | Construction method of opening locked steel tube pilecofferdam |
| CN103397634A (en) * | 2013-08-16 | 2013-11-20 | 中铁上海工程局有限公司 | Anchoring construction method for fastener steel tube pile cofferdam |
| CN105442622A (en) * | 2015-12-15 | 2016-03-30 | 中交一公局桥隧工程有限公司 | Water-retaining construction technology for locked steel pipe piles |
| CN109372038A (en) * | 2018-12-19 | 2019-02-22 | 中铁二局集团有限公司 | A kind of lock steel pipe pile cofferdam lock sealing experimental rig and method |
| CN209353321U (en) * | 2018-12-06 | 2019-09-06 | 中铁建大桥工程局集团第五工程有限公司 | A kind of compound shaped steel plate pile locking device of deep water cushion cap |
| CN211285655U (en) * | 2019-08-30 | 2020-08-18 | 广东省水利水电第三工程局有限公司 | A stagnant water stake for hydraulic engineering water shutoff |
| CN114635426A (en) * | 2022-02-28 | 2022-06-17 | 陕西正诚路桥工程研究院有限公司 | Guiding device of lock catch steel pipe pile and construction method thereof |
| CN115045310A (en) * | 2022-07-25 | 2022-09-13 | 中交一公局第八工程有限公司 | Steel pipe pile cofferdam construction method |
-
2022
- 2022-07-25 CN CN202210877833.0A patent/CN115142448A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182717A (en) * | 2007-07-30 | 2008-05-21 | 中铁十八局集团有限公司 | Construction method of opening locked steel tube pilecofferdam |
| CN103397634A (en) * | 2013-08-16 | 2013-11-20 | 中铁上海工程局有限公司 | Anchoring construction method for fastener steel tube pile cofferdam |
| CN105442622A (en) * | 2015-12-15 | 2016-03-30 | 中交一公局桥隧工程有限公司 | Water-retaining construction technology for locked steel pipe piles |
| CN209353321U (en) * | 2018-12-06 | 2019-09-06 | 中铁建大桥工程局集团第五工程有限公司 | A kind of compound shaped steel plate pile locking device of deep water cushion cap |
| CN109372038A (en) * | 2018-12-19 | 2019-02-22 | 中铁二局集团有限公司 | A kind of lock steel pipe pile cofferdam lock sealing experimental rig and method |
| CN211285655U (en) * | 2019-08-30 | 2020-08-18 | 广东省水利水电第三工程局有限公司 | A stagnant water stake for hydraulic engineering water shutoff |
| CN114635426A (en) * | 2022-02-28 | 2022-06-17 | 陕西正诚路桥工程研究院有限公司 | Guiding device of lock catch steel pipe pile and construction method thereof |
| CN115045310A (en) * | 2022-07-25 | 2022-09-13 | 中交一公局第八工程有限公司 | Steel pipe pile cofferdam construction method |
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