CN208844593U - Latch type steel pipe pile cofferdam construction device - Google Patents
Latch type steel pipe pile cofferdam construction device Download PDFInfo
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- CN208844593U CN208844593U CN201821290940.9U CN201821290940U CN208844593U CN 208844593 U CN208844593 U CN 208844593U CN 201821290940 U CN201821290940 U CN 201821290940U CN 208844593 U CN208844593 U CN 208844593U
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- fore shaft
- cofferdam
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Abstract
Latch type steel pipe pile cofferdam construction device, the device is the cofferdam being made of the linking in parallel of more fore shaft steel-pipe piles (1), " C " type yin fore shaft (2) and T-shape steel (3) is respectively welded along steel-pipe pile axis direction on the lateral wall of the two sides of steel-pipe pile, the utility model structure construction speed is fast, fabrication and installation simple process, without heavy mechanical equipment, without transportation by driving facility.Steel pipe pile joint uses male and female connector, reduces lock quantity, reduces cofferdam percolating water probability.The simple process such as bentonite are used in lock can reach water plugging effect, ensure that the recycling and reusing of steel-pipe pile, saving steel is economic and practical.
Description
Technical field
The utility model relates to the steel pipe pile cofferdam used in deep foundation pit construction, in particular to a kind of deep water flows layer of sand
Upper steel pipe pile cofferdam locker.
Background technique
In recent years, with the development of national economy, the continuous quickening of Provincial Communications Fundamental Construction paces is built on great rivers
Extra-large bridge engineering and build that bridge spanning the sea engineering is more and more in coastal area, the bridge quantity in Highway Project
Also it is continuously increased.
Deepwater foundation construction is the key that wide span bridge building, and construction skill is complicated, and investment construction equipment is more,
Shared economic specific gravity is huge in entire bridge construction engineering.Cofferdam is specially designed interim anti-for bridge bearing platform construction
Water-bound, effect are to be obstructed water flow except the body of weir by cofferdam outer wall and concrete sealing bottom.Opening locked steel tube pilecofferdam with
Its good economic benefit and stress performance are widely used.Lock catch device is added in steel pipe two sides in fore shaft steel-pipe pile, can make two
Adjacent steel-pipe pile, which links closely, to be connected together, and has the characteristics that overall stiffness is big, bending resistance is strong, whole structural stability is good.
There is operation of sand dredger on river throughout the year, water velocity is excessive in addition, and layer of sand mobility is very big, the flowing of profundal zone
The influence of layer of sand brings difficulty of construction to the stability of opening locked steel tube pilecofferdam, and construction safety and structural stability are waited for supervise
Survey research.
Utility model content
Purpose of utility model:
The utility model provides a kind of latch type steel pipe pile cofferdam construction device and construction method, previous the purpose is to solve
The problems of.
Technical solution:
The device is to be connected the cofferdam constituted (axially in parallel by more fore shaft steel-pipe piles (1) are in parallel！), the two sides of steel-pipe pile
Lateral wall on along steel-pipe pile axis direction be respectively welded " C " type yin fore shaft (2) and T-shape steel (3), T-shape steel (3) is by even
The " T " shape structure that piece (4) and the edge of a wing (5) are constituted, (4) connect the side wall of fore shaft steel-pipe pile (1) in flakes, and (4) are perpendicular to lock in flakes
The tangent line of the side wall of mouthful steel-pipe pile (1), the edge of a wing (5) are arranged perpendicular to (4) in flakes, when connection, the opening of " C " type yin fore shaft (2)
(6) are stitched towards T-shape steel (3), and (side is exactly such as the side perpendicular to drawing in Fig. 3 from side on the edge of a wing (5) of T-shape steel (3)
To, or upper and lower ends can also be described as！) protrude into " C " type yin fore shaft (2), (4) pass through open seam (6) in flakes, form lock
Button connection.
Setting side reinforcing bar (7) between the lateral wall of fore shaft steel-pipe pile (1) and the lateral surface of " C " type yin fore shaft (2).
It fills in the fore shaft cavity (8) surrounded by " C " type yin fore shaft and T-shape sun fore shaft mixed with big cotton-wool and swelling
Earth mixtures.
It crowds around in the outside surrounding for enclosing stupefied (9) in more fore shaft steel-pipe piles (1) cofferdam in parallel constituted.(as shown in Figure 1！)
Thick steel plate (10) to enclose it is stupefied reinforce, thick steel plate (10) setting is enclosing inside and outside stupefied (9).
It encloses stupefied (9) and entirety is welded by I-steel, and connected in the side by inner support with thick steel plate.
Latch type steel pipe pile cofferdam construction method as described above, it is characterised in that: steps are as follows:
Using trestle steel pipe pile foundation (11), on it with I25a work steel welding joist (12), and the is placed on joist
It encloses together stupefied, is enclosed using first layer stupefied for frame, along stupefied outside inserting piling fore shaft steel-pipe pile (1) is enclosed, answer strict control to lock in the process
Mouthful steel-pipe pile installation error, strives the inclination of high-precision control stake, and in order to injection in the process and cofferdam is last closes up；
When assigning steel-pipe pile, from downstream side (downstream side of water flow, the left side of example as shown in figure 1) apart from corner pile (1-1) (such as
The steel-pipe pile that corner location is in shown in Fig. 1 is exactly corner pile) 6~7 piles initially as first stake, then successively inserting piling arrives
Position, until the fore shaft steel-pipe pile inserting piling in downstream side (left side of example as shown in figure 1) in place and continues to complete closing up for entire cofferdam.
The step of inserting piling of first pile is beginning and the most critical of cofferdam construction, the verticality of first stake influences entirely
The verticality of the other steel-pipe piles in cofferdam more slowly should will suspend pile sinking when being driven into projected depth half when squeezing into, and check
Whether pile body verticality meets the requirements (within 0.5% and ≯ 10cm), continues out hammer if meeting and is sink to designed elevation, otherwise answers
It is beaten again after extraction；
Cofferdam steel pipe height of pile top be cofferdam designed elevation, upstream side consider water wave effect, steel pipe stake top can relatively under
Swim the slightly higher 10cm~20cm in side.
When encountering piling difficulty, the method auxiliary sinking that jetting in stake inhales mud (general pile jetting) can be used；
Forbid to hammer it is too quickly, cause steel-pipe pile fore shaft destroy and influence water-stagnating effect.
This method detailed step is as follows:
(1), " C " type yin fore shaft is welded along steel-pipe pile centerline direction on the lateral wall of the first steel-pipe pile, in the second steel
Along steel-pipe pile centerline direction there are cracking on the lateral wall of tubular pole, and by the insertion of T-shape steel web crack among and weld, shape
At T-shape sun fore shaft.
(2), the edge of a wing of T-shape steel is plugged in " C " type yin fore shaft.
(3), the setting side reinforcing bar between the lateral wall of the first steel-pipe pile and the lateral surface of " C " type yin fore shaft.
(4), it fills in the fore shaft cavity surrounded by " C " type yin fore shaft and T-shape sun fore shaft mixed with the rope made of hemp and swelling
Earth mixtures.
(5), I25a steel is used to weld joist on it using trestle steel pipe pile foundation；
(6), it is placed on joist and encloses stupefied, and fixation in first layer；
(7), enclosed using first layer it is stupefied as frame, along stupefied outside inserting piling fore shaft steel-pipe pile is enclosed, until cofferdam fold；
(8), the supporting steel pipe (13) and diagonal brace (14) of first layer inner support system are installed；
(9), it is closely knit that the stupefied gap C20 concrete pad between locking notch pile will be enclosed；
(10), excavation pit or backfill fine sand, diver flatten riverbed；
(11), back cover concrete operation platform is set up, C20 back cover concrete is poured and is waited by force, draw water 4~5m, installs and encloses in second
Stupefied and inner support is closely knit by gap pad between second inner support and fore shaft steel-pipe pile with C20 concrete；
(12), draw water 3~4m, installs in third road and encloses stupefied and inner support, by third road inner support and is locked with C20 concrete
Gap pad is closely knit between mouth steel-pipe pile.
Advantageous effect:
The purpose of this utility model, which is that, overcomes above-mentioned the deficiencies in the prior art, and provides a kind of be suitable for deeply
Construction method of opening locked steel tube pilecofferdam on water flowing layer of sand, the stability in this method cofferdam is high, rigidity is big, and barrier performance is strong, applies
Work speed is fast, constructs, repairs, removing conveniently, and without using large-scale lifting equipment waterborne and great deal of steel.
The cofferdam constituted is connected in series by more fore shaft steel-pipe piles in it from beginning to end, and with thick strength plate to enclose at stupefied fulcrum web into
Row is reinforced, and the novel lock button steel-pipe pile includes the first steel-pipe pile and the second steel-pipe pile, on the lateral wall of the first steel-pipe pile
" C " type yin fore shaft is welded along steel-pipe pile centerline direction, is stayed on the lateral wall of the second steel-pipe pile along steel-pipe pile centerline direction
Have and crack, and by T-shape steel web insertion crack among and weld, formed T-shape sun fore shaft.The edge of a wing of T-shape steel is plugged on
In " C " type yin fore shaft, lock is formed.
The setting side reinforcing bar between the lateral wall of the first steel-pipe pile and the lateral surface of " C " type yin fore shaft.By " C " type yin
It fills in the fore shaft cavity that fore shaft and T-shape sun fore shaft are surrounded mixed with big cotton-wool and bentonite mixtures.It encloses stupefied by I-shaped
Steel is welded into entirety, and is connected in the side by inner support with thick steel plate.It encloses and stupefied puts forth one's strength plate in the corresponding position of the fulcrum of inner support
Reinforced.
The utility model structure construction speed is fast, and fabrication and installation simple process is set without heavy mechanical equipment without transportation by driving
It applies.Steel pipe pile joint uses male and female connector, reduces lock quantity, reduces cofferdam percolating water probability.Swelling is used in lock
The simple process such as soil can reach water plugging effect, ensure that the recycling and reusing of steel-pipe pile, saving steel is economic and practical.
Detailed description of the invention
Fig. 1 is steel pipe pile cofferdam plan view.
Fig. 2 is fore shaft steel-pipe pile parallel connection linking schematic diagram；
Fig. 3 is the buckle structure schematic diagram that T-shape steel and " C " type yin fore shaft are formed, i.e. the enlarged drawing at the position A in Fig. 1.
Specific embodiment
A kind of latch type steel pipe pile cofferdam construction device, the device are to be made of the linking in parallel of more fore shaft steel-pipe piles (1)
Cofferdam it is (axial parallel！), " C " type yin fore shaft is respectively welded along steel-pipe pile axis direction on the lateral wall of the two sides of steel-pipe pile
(2) and T-shape steel (3), T-shape steel (3) are the " T " shape structure being made of (4) in flakes and the edge of a wing (5), and (4) connect fore shaft in flakes
The side wall of steel-pipe pile (1), (4) perpendicular to the tangent line of the side wall of fore shaft steel-pipe pile (1), the edge of a wing (5) are set perpendicular to (4) in flakes in flakes
It sets, when connection, the open seam (6) of " C " type yin fore shaft (2) is towards T-shape steel (3), and the edge of a wing (5) of T-shape steel (3) is from side
(side is exactly that or can also be described as upper and lower ends such as the direction perpendicular to drawing in Fig. 3！) protrude into " C " type yin fore shaft (2)
Interior, (4) pass through open seam (6) in flakes, form lock connection.
Setting side reinforcing bar (7) between the lateral wall of fore shaft steel-pipe pile (1) and the lateral surface of " C " type yin fore shaft (2).
It fills in the fore shaft cavity (8) surrounded by " C " type yin fore shaft and T-shape sun fore shaft mixed with big cotton-wool and swelling
Earth mixtures.
It crowds around in the outside surrounding for enclosing stupefied (9) in more fore shaft steel-pipe piles (1) cofferdam in parallel constituted.(as shown in Figure 1！)
Thick steel plate (10) to enclose it is stupefied reinforce, thick steel plate (10) setting is enclosing inside and outside stupefied (9).
It encloses stupefied (9) and entirety is welded by I-steel, and connected in the side by inner support with thick steel plate.
Latch type steel pipe pile cofferdam construction method as described above, it is characterised in that: steps are as follows:
Using trestle steel pipe pile foundation (11), on it with I25a work steel welding joist (12), and the is placed on joist
It encloses together stupefied, is enclosed using first layer stupefied for frame, along stupefied outside inserting piling fore shaft steel-pipe pile (1) is enclosed, answer strict control to lock in the process
Mouthful steel-pipe pile installation error, strives the inclination of high-precision control stake, and in order to injection in the process and cofferdam is last closes up；
When assigning steel-pipe pile, from downstream side (downstream side of water flow, the left side of example as shown in figure 1) apart from corner pile (1-1) (such as
The steel-pipe pile that corner location is in shown in Fig. 1 is exactly corner pile) 6~7 piles initially as first stake, then successively inserting piling arrives
Position, until the fore shaft steel-pipe pile inserting piling in downstream side (left side of example as shown in figure 1) in place and continues to complete closing up for entire cofferdam.
The step of inserting piling of first pile is beginning and the most critical of cofferdam construction, the verticality of first stake influences entirely
The verticality of the other steel-pipe piles in cofferdam more slowly should will suspend pile sinking when being driven into projected depth half when squeezing into, and check
Whether pile body verticality meets the requirements (within 0.5% and ≯ 10cm), continues out hammer if meeting and is sink to designed elevation, otherwise answers
It is beaten again after extraction；
Cofferdam steel pipe height of pile top be cofferdam designed elevation, upstream side consider water wave effect, steel pipe stake top can relatively under
Swim the slightly higher 10cm~20cm in side.
When encountering piling difficulty, the method auxiliary sinking that jetting in stake inhales mud (general pile jetting) can be used；
Forbid to hammer it is too quickly, cause steel-pipe pile fore shaft destroy and influence water-stagnating effect.
This method detailed step is as follows:
(1), " C " type yin fore shaft is welded along steel-pipe pile centerline direction on the lateral wall of the first steel-pipe pile, in the second steel
Along steel-pipe pile centerline direction there are cracking on the lateral wall of tubular pole, and by the insertion of T-shape steel web crack among and weld, shape
At T-shape sun fore shaft.
(2), the edge of a wing of T-shape steel is plugged in " C " type yin fore shaft.
(3), the setting side reinforcing bar between the lateral wall of the first steel-pipe pile and the lateral surface of " C " type yin fore shaft.
(4), it fills in the fore shaft cavity surrounded by " C " type yin fore shaft and T-shape sun fore shaft mixed with the rope made of hemp and swelling
Earth mixtures.
(5), I25a steel is used to weld joist on it using trestle steel pipe pile foundation；
(6), it is placed on joist and encloses stupefied, and fixation in first layer；
(7), enclosed using first layer it is stupefied as frame, along stupefied outside inserting piling fore shaft steel-pipe pile is enclosed, until cofferdam fold；
(8), the supporting steel pipe (13) and diagonal brace (14) of first layer inner support system are installed；
(9), it is closely knit that the stupefied gap C20 concrete pad between locking notch pile will be enclosed；
(10), excavation pit or backfill fine sand, diver flatten riverbed；
(11), back cover concrete operation platform is set up, C20 back cover concrete is poured and is waited by force, draw water 4~5m, installs and encloses in second
Stupefied and inner support is closely knit by gap pad between second inner support and fore shaft steel-pipe pile with C20 concrete；
(12), draw water 3~4m, installs in third road and encloses stupefied and inner support, by third road inner support and is locked with C20 concrete
Gap pad is closely knit between mouth steel-pipe pile.
Claims (6)
1. a kind of latch type steel pipe pile cofferdam construction device, it is characterised in that: the device is in parallel by more fore shaft steel-pipe piles (1)
Be connected the cofferdam constituted, on the lateral wall of the two sides of steel-pipe pile along steel-pipe pile axis direction be respectively welded " C " type yin fore shaft (2) and
T-shape steel (3), T-shape steel (3) are the " T " shape structure being made of (4) in flakes and the edge of a wing (5), and (4) connect fore shaft steel pipe in flakes
Stake (1) side wall, in flakes (4) perpendicular to the side wall of fore shaft steel-pipe pile (1) tangent line, the edge of a wing (5) perpendicular to (4) in flakes be arranged,
When connection, the open seam (6) of " C " type yin fore shaft (2) is towards T-shape steel (3), and the edge of a wing (5) of T-shape steel (3) is stretched from side
Enter in " C " type yin fore shaft (2), (4) pass through open seam (6) in flakes, form lock connection.
2. latch type steel pipe pile cofferdam construction device according to claim 1, it is characterised in that: in fore shaft steel-pipe pile (1)
Lateral wall and " C " type yin fore shaft (2) lateral surface between setting side reinforcing bar (7).
3. latch type steel pipe pile cofferdam construction device according to claim 1, it is characterised in that: by " C " type yin fore shaft
It fills in the fore shaft cavity (8) surrounded with T-shape sun fore shaft mixed with big cotton-wool and bentonite mixtures.
4. latch type steel pipe pile cofferdam construction device according to claim 1, it is characterised in that: more fore shaft steel-pipe piles
(1) cofferdam in parallel constituted is crowded around in the outside surrounding for enclosing stupefied (9).
5. latch type steel pipe pile cofferdam construction device according to claim 4, it is characterised in that: thick steel plate (10) is stupefied to enclosing
Reinforced, thick steel plate (10) setting is being enclosed inside and outside stupefied (9).
6. latch type steel pipe pile cofferdam construction device according to claim 4, it is characterised in that: enclose stupefied (9) by I-steel
It is welded into entirety, and is connected in the side by inner support with thick steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290940.9U CN208844593U (en) | 2018-08-10 | 2018-08-10 | Latch type steel pipe pile cofferdam construction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821290940.9U CN208844593U (en) | 2018-08-10 | 2018-08-10 | Latch type steel pipe pile cofferdam construction device |
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| Publication Number | Publication Date |
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| CN208844593U true CN208844593U (en) | 2019-05-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162288A (en) * | 2018-08-10 | 2019-01-08 | 中交路桥北方工程有限公司 | Latch type steel pipe pile cofferdam construction device and construction method |
-
2018
- 2018-08-10 CN CN201821290940.9U patent/CN208844593U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162288A (en) * | 2018-08-10 | 2019-01-08 | 中交路桥北方工程有限公司 | Latch type steel pipe pile cofferdam construction device and construction method |
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