CN108660941A - A kind of lock steel pipe splicing pile cofferdam and construction method - Google Patents
A kind of lock steel pipe splicing pile cofferdam and construction method Download PDFInfo
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- CN108660941A CN108660941A CN201810816599.4A CN201810816599A CN108660941A CN 108660941 A CN108660941 A CN 108660941A CN 201810816599 A CN201810816599 A CN 201810816599A CN 108660941 A CN108660941 A CN 108660941A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 523
- 239000010959 steel Substances 0.000 title claims abstract description 523
- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000004567 concrete Substances 0.000 claims abstract description 69
- 230000002787 reinforcement Effects 0.000 claims abstract description 68
- 238000005553 drilling Methods 0.000 claims abstract description 40
- -1 tube bottom drilling Substances 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims description 42
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000003351 stiffener Substances 0.000 claims description 10
- 229910000679 solder Inorganic materials 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
A kind of lock steel pipe splicing pile cofferdam and construction method, cofferdam is made of several lock steel pipe spliced piles, latching steel pipe spliced pile tool, there are three types of structure types, the first spliced pile includes supporting steel pipe, lock steel pipe, I-steel, tube bottom drilling and steel reinforcement cage, lock steel pipe and I-steel are welded on supporting steel pipe, and steel reinforcement cage is encapsulated in by concrete in tube bottom drilling；Second of spliced pile includes supporting steel pipe, lock steel pipe, I-steel, steel reinforcement cage and pipe steel, lock steel pipe and I-steel are welded on supporting steel pipe, pipe steel is fixed on by inserting piling mode immediately below supporting steel pipe in ground, and inside pipe steel and steel reinforcement cage is packaged by concrete；The third spliced pile includes supporting steel pipe, lock steel pipe, I-steel, tube bottom drilling, steel reinforcement cage and pipe steel, latches steel pipe and I-steel is welded on supporting steel pipe, and steel reinforcement cage and pipe steel are encapsulated in by concrete in tube bottom drilling.It also can guarantee stability when steel-pipe pile inserting piling depth is unable to reach projected depth.
Description
Technical field
The invention belongs to technical field of bridge engineering, splice pile cofferdam and construction party more particularly to a kind of lock steel pipe
Method.
Background technology
In recent years, Bridges in Our Country cause flourishes, and more and more bridges are built at rivers, reservoir zone, sea etc.
Water system developed region, this makes the basic pier of bridge need to construct under deepwater environment, and steel cofferdam is in deep water construction
In be a kind of indispensable interim building enclosure.
Currently, in Practical Project, common steel cofferdam mainly has steel sheet-pile cofferdam, steel boxed cofferdam and lock steel-pipe pile
Cofferdam.
Steel sheet-pile cofferdam is by needing to carry out purlin support in hammer driven to ground, but inside steel sheet pile cofferdam structure
And bearing diagonal, and during squeezing into ground, buckling easily occurs for steel sheet pile lower end.
Steel boxed cofferdam is mainly made of bottom plate, side plate, inner support and four major part of hangar system, but steel boxed cofferdam is applied
Work is comparatively complex.
Lock steel pipe pile cofferdam is mainly made of supporting steel-pipe pile, negative and positive lock, horizontally-supported and bottom concrete, is latched
The support system and construction technology of steel pipe pile cofferdam are simpler than steel sheet-pile cofferdam, but since lock steel-pipe pile lateral surface is with the moon
Sun lock, can increase resistance during hammer inserting piling, once encounter it is more hard be difficult to squeeze into rock stratum when, cause to latch steel pipe
Stake can not get to projected depth during inserting piling.
Invention content
In view of the problems of the existing technology, a kind of lock steel pipe splicing pile cofferdam of present invention offer and construction method, i.e.,
The inserting piling depth of lock steel-pipe pile is set to be unable to reach projected depth, it is also ensured that lock steel-pipe pile has enough stability,
Ensure the anchoring strength of lock steel-pipe pile base opening simultaneously.
To achieve the goals above, the present invention adopts the following technical scheme that：A kind of lock steel pipe splicing pile cofferdam, by several
Latch steel pipe spliced pile composition, the lock steel pipe spliced pile include supporting steel pipe, lock steel pipe, I-steel, tube bottom drill and
Steel reinforcement cage；The lock steel pipe and I-steel are welded in parallel on supporting steel pipe lateral surface, are latched between steel pipe and supporting steel pipe
It is in reinforcement connection by triangle stiffener, is welded with reinforcing bar in the solder contacts both sides of lock steel pipe and supporting steel pipe, is locking
It is machined with I-steel slot in an axial direction in button steel pipe wall；The supporting steel pipe is fixed on by inserting piling mode on ground, described
Tube bottom drilling is located in the ground immediately below supporting steel pipe, and steel reinforcement cage is located in tube bottom drilling, and support is extended at the top of steel reinforcement cage
In steel pipe, steel reinforcement cage is encapsulated in by concrete in supporting steel pipe and tube bottom drilling.
The construction method of the lock steel pipe splicing pile cofferdam, includes the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, supporting steel pipe is controlled by leading truck
Verticality carries out inserting piling using vibration hammer to supporting steel pipe, and the inserting piling depth of supporting steel pipe is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe and temporary platform are fixed, using impact drill in supporting steel pipe
It inside drills, drills until processing tube bottom in the ground immediately below supporting steel pipe, then dregs in cleaning hole；
Step 3：By in reinforcing bar cage hoisting to tube bottom drilling, concrete is then poured into, ensures that concrete did not had reinforcing bar completely
Cage top face, until concrete reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile is completed, and ensure the lock steel pipe spliced pile of subsequent installation
I-steel is properly inserted in the lock steel pipe of lock steel pipe spliced pile adjacent thereto, until cofferdam fold, then according to construction
Water level mark on lock steel pipe spliced pile goes out purlin horizontal center position, and profile steel bracket is welded on supporting steel pipe, makees
For the support of purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe, then welds the two
It is connected together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and accurately measures the purlin at every supporting beam both ends
Clear spacing carries out blanking to supporting beam further according to clear spacing, supporting beam both ends is then cut into tongue and groove, are finally supported beam
Installation；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, using two
Platform concrete mixer delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile can be extracted one by one, until completing cofferdam
Dismounting.
A kind of lock steel pipe splicing pile cofferdam, is made of, the lock steel pipe spliced pile packet several lock steel pipe spliced piles
Include supporting steel pipe, lock steel pipe, I-steel, steel reinforcement cage and round steel pipe；The lock steel pipe and I-steel are welded on support in parallel
It on steel pipe lateral surface, latches and is in reinforcement connection by triangle stiffener between steel pipe and supporting steel pipe, in lock steel pipe and branch
The solder contacts both sides of support steel pipe are welded with reinforcing bar, and I-steel slot is machined in an axial direction in lock steel pipe wall；The branch
Support steel pipe is fixed on by inserting piling mode on ground, and the round steel pipe is fixed on the ground immediately below supporting steel pipe by inserting piling mode
It in base, is extended in supporting steel pipe at the top of round steel pipe, the steel reinforcement cage is located at supporting steel pipe bottom, and the top position of round steel pipe
In the inside of steel reinforcement cage, the inside of round steel pipe and steel reinforcement cage are packaged by concrete.
The construction method of the lock steel pipe splicing pile cofferdam, includes the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, supporting steel pipe is controlled by leading truck
Verticality carries out inserting piling using vibration hammer to supporting steel pipe, and the inserting piling depth of supporting steel pipe is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe and temporary platform are fixed, is inserted round steel pipe using impact drill
It gets in the ground immediately below supporting steel pipe, then removes the dregs in round steel pipe；
Step 3：By the bottom of reinforcing bar cage hoisting to supporting steel pipe, concrete is then poured into, ensures that concrete did not had completely
The top surface of steel reinforcement cage and round steel pipe, until concrete reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile is completed, and ensure the lock steel pipe spliced pile of subsequent installation
I-steel is properly inserted in the lock steel pipe of lock steel pipe spliced pile adjacent thereto, until cofferdam fold, then according to construction
Water level mark on lock steel pipe spliced pile goes out purlin horizontal center position, and profile steel bracket is welded on supporting steel pipe, makees
For the support of purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe, then welds the two
It is connected together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and accurately measures the purlin at every supporting beam both ends
Clear spacing carries out blanking to supporting beam further according to clear spacing, supporting beam both ends is then cut into tongue and groove, are finally supported beam
Installation；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, using two
Platform concrete mixer delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile can be extracted one by one, until completing cofferdam
Dismounting.
A kind of lock steel pipe splicing pile cofferdam, is made of, the lock steel pipe spliced pile packet several lock steel pipe spliced piles
Include supporting steel pipe, lock steel pipe, I-steel, tube bottom drilling, steel reinforcement cage and round steel pipe；The lock steel pipe and the parallel weldering of I-steel
It is connected on supporting steel pipe lateral surface, latches and be in reinforcement connection by triangle stiffener between steel pipe and supporting steel pipe, latched
The solder contacts both sides of steel pipe and supporting steel pipe are welded with reinforcing bar, and being machined with I-steel in an axial direction in lock steel pipe wall inserts
Slot；The supporting steel pipe is fixed on by inserting piling mode on ground, and the tube bottom drilling is located at the ground immediately below supporting steel pipe
Interior, steel reinforcement cage and round steel pipe are respectively positioned in tube bottom drilling, and steel reinforcement cage and round steel pipe top extend in supporting steel pipe, and round steel
Pipe is encapsulated in supporting steel pipe and tube bottom drilling positioned at the inside of steel reinforcement cage, steel reinforcement cage and round steel pipe by concrete.
The construction method of the lock steel pipe splicing pile cofferdam, includes the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, supporting steel pipe is controlled by leading truck
Verticality carries out inserting piling using vibration hammer to supporting steel pipe, and the inserting piling depth of supporting steel pipe is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe and temporary platform are fixed, using impact drill in supporting steel pipe
It inside drills, drills until processing tube bottom in the ground immediately below supporting steel pipe, then dregs in cleaning hole；
Step 3：Steel reinforcement cage and round steel pipe are lifted into tube bottom drilling respectively, then pour into concrete, ensures concrete
Do not had the top surface of steel reinforcement cage and round steel pipe completely, until concrete reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile is completed, and ensure the lock steel pipe spliced pile of subsequent installation
I-steel is properly inserted in the lock steel pipe of lock steel pipe spliced pile adjacent thereto, until cofferdam fold, then according to construction
Water level mark on lock steel pipe spliced pile goes out purlin horizontal center position, and profile steel bracket is welded on supporting steel pipe, makees
For the support of purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe, then welds the two
It is connected together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and accurately measures the purlin at every supporting beam both ends
Clear spacing carries out blanking to supporting beam further according to clear spacing, supporting beam both ends is then cut into tongue and groove, are finally supported beam
Installation；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, using two
Platform concrete mixer delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile can be extracted one by one, until completing cofferdam
Dismounting.
Beneficial effects of the present invention：
The lock steel pipe splicing pile cofferdam and construction method of the present invention, even if the inserting piling depth of lock steel-pipe pile is unable to reach
The high reinforced concrete structure of bearing capacity (tube bottom drilling+steel reinforcement cage+concrete), steel tube concrete can also be used in projected depth
Soil structure (round steel pipe+steel reinforcement cage+concrete) or (the tube bottom drilling+round steel pipe+steel reinforcement cage+coagulation of stiffness concrete filled steel tube
Soil) meet bearing capacity and stiffness requirement, there is enough stability to ensure to latch steel-pipe pile, while ensureing to latch steel-pipe pile
The anchoring strength of base opening.
Description of the drawings
Fig. 1 is that the lock steel pipe of the present invention splices the vertical view of pile cofferdam；
Fig. 2 is the structural schematic diagram of the lock steel pipe spliced pile (tube bottom drilling+steel reinforcement cage) of the present invention；
Fig. 3 is A-A sectional views in Fig. 2；
Fig. 4 is the structural schematic diagram of the lock steel pipe spliced pile (round steel pipe+steel reinforcement cage) of the present invention；
Fig. 5 is B-B sectional views in Fig. 4；
Fig. 6 is the structural schematic diagram of the lock steel pipe spliced pile (tube bottom drilling+round steel pipe+steel reinforcement cage) of the present invention；
Fig. 7 is C-C sectional views in Fig. 6；
In figure, 1-lock steel pipe spliced pile, 2-supporting steel pipes, 3-lock steel pipes, 4-I-steel, the drilling of 5-tube bottom,
6-steel reinforcement cages, 7-triangle stiffeners, 8-reinforcing bars, 9-I-steel slots, 10-concrete, 11-round steel pipes.
Specific implementation mode
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 2,3, a kind of lock steel pipe splices pile cofferdam, is made of several lock steel pipe spliced piles 1, the lock
Steel pipe spliced pile 1 includes supporting steel pipe 2, lock steel pipe 3, I-steel 4, tube bottom drilling 5 and steel reinforcement cage 6；The lock steel pipe 3 and
I-steel 4 is welded in parallel on 2 lateral surface of supporting steel pipe, latch between steel pipe 3 and supporting steel pipe 2 by triangle stiffener 7 into
Row reinforces connection, reinforcing bar 8 is welded in lock steel pipe 3 and the solder contacts both sides of supporting steel pipe 2, on lock 3 tube wall of steel pipe
It is machined with I-steel slot 9 in an axial direction；The supporting steel pipe 2 is fixed on by inserting piling mode on ground, and the tube bottom drills 5
In in the ground of 2 underface of supporting steel pipe, steel reinforcement cage 6 is located in tube bottom drilling 5, and 6 top of steel reinforcement cage extends to supporting steel pipe 2
In, steel reinforcement cage 6 is encapsulated in by concrete 10 in supporting steel pipe 2 and tube bottom drilling 5.
The construction method of the lock steel pipe splicing pile cofferdam, includes the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, supporting steel pipe 2 is controlled by leading truck
Verticality, inserting piling is carried out to supporting steel pipe 2 using vibration hammer, and the inserting piling depth of supporting steel pipe 2 is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe 2 is fixed with temporary platform, using impact drill in supporting steel
It drills in pipe 2, until process tube bottom drilling 5 in the ground immediately below supporting steel pipe 2, then dregs in cleaning hole；
Step 3：Steel reinforcement cage 6 is lifted into tube bottom drilling 5, concrete 10 is then poured into, ensures that concrete 10 does not have completely
6 top surface of steel reinforcement cage is crossed, until concrete 10 reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile 1 is completed, and ensures the lock steel pipe spliced pile 1 of subsequent installation
I-steel 4 be properly inserted in the lock steel pipe 3 of lock steel pipe spliced pile 1 adjacent thereto, until cofferdam fold is (such as Fig. 1 institutes
Show), then according to working water level, mark goes out purlin horizontal center position on lock steel pipe spliced pile 1, and on supporting steel pipe 2
Profile steel bracket is welded, the support as purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe 2, then by the two
Weld together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and accurately measures the purlin at every supporting beam both ends
Clear spacing carries out blanking to supporting beam further according to clear spacing, supporting beam both ends is then cut into tongue and groove, are finally supported beam
Installation；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, using two
Platform concrete mixer delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile 1 can be extracted one by one, until completing to enclose
The dismounting on weir.
As shown in Figure 4,5, a kind of lock steel pipe splices pile cofferdam, is made of several lock steel pipe spliced piles 1, the lock
Steel pipe spliced pile 1 includes supporting steel pipe 2, lock steel pipe 3, I-steel 4, steel reinforcement cage 6 and round steel pipe 11；The lock steel pipe 3 and
I-steel 4 is welded in parallel on 2 lateral surface of supporting steel pipe, latch between steel pipe 3 and supporting steel pipe 2 by triangle stiffener 7 into
Row reinforces connection, reinforcing bar 8 is welded in lock steel pipe 3 and the solder contacts both sides of supporting steel pipe 2, on lock 3 tube wall of steel pipe
It is machined with I-steel slot 9 in an axial direction；The supporting steel pipe 2 is fixed on by inserting piling mode on ground, and the round steel pipe 11 is logical
It crosses in the ground that inserting piling mode is fixed on immediately below supporting steel pipe 2, the top of round steel pipe 11 extends in supporting steel pipe 2, described
Steel reinforcement cage 6 is located at 2 bottom of supporting steel pipe, and the top of round steel pipe 11 is located at the inside of steel reinforcement cage 6, the inside of round steel pipe 11 and steel
Muscle cage 6 is packaged by concrete 10.
The construction method of the lock steel pipe splicing pile cofferdam, includes the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, supporting steel pipe 2 is controlled by leading truck
Verticality, inserting piling is carried out to supporting steel pipe 2 using vibration hammer, and the inserting piling depth of supporting steel pipe 2 is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe 2 is fixed with temporary platform, using impact drill by round steel pipe
In ground immediately below 11 inserting pilings to supporting steel pipe 2, the dregs in round steel pipe 11 is then removed；
Step 3：Steel reinforcement cage 6 is lifted into the bottom of supporting steel pipe 2, then pours into concrete 10, ensures that concrete 10 is complete
The full top surface for not having steel reinforcement cage 6 and round steel pipe 11, until concrete 4 reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile 1 is completed, and ensures the lock steel pipe spliced pile 1 of subsequent installation
I-steel 4 be properly inserted in the lock steel pipe 3 of lock steel pipe spliced pile 1 adjacent thereto, until cofferdam fold is (such as Fig. 1 institutes
Show), then according to working water level, mark goes out purlin horizontal center position on lock steel pipe spliced pile 1, and on supporting steel pipe 2
Profile steel bracket is welded, the support as purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe 2, then by the two
Weld together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and accurately measures the purlin at every supporting beam both ends
Clear spacing carries out blanking to supporting beam further according to clear spacing, supporting beam both ends is then cut into tongue and groove, are finally supported beam
Installation；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, using two
Platform concrete mixer delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile 1 can be extracted one by one, until completing to enclose
The dismounting on weir.
As shown in Figure 6,7, a kind of lock steel pipe splices pile cofferdam, is made of several lock steel pipe spliced piles 1, the lock
Steel pipe spliced pile 1 includes supporting steel pipe 2, lock steel pipe 3, I-steel 4, tube bottom drilling 5, steel reinforcement cage 6 and round steel pipe 11；The lock
Button steel pipe 3 and I-steel 4 are welded in parallel on 2 lateral surface of supporting steel pipe, are latched and are passed through triangle between steel pipe 3 and supporting steel pipe 2
Stiffener 7 is in reinforcement connection, and reinforcing bar 8 is welded in lock steel pipe 3 and the solder contacts both sides of supporting steel pipe 2, in lock steel
It is machined with I-steel slot 9 in an axial direction on 3 tube wall of pipe；The supporting steel pipe 2 is fixed on by inserting piling mode on ground, the pipe
Subdrilling hole 5 is located in the ground immediately below supporting steel pipe 2, and steel reinforcement cage 6 and round steel pipe 11 are respectively positioned in tube bottom drilling 5, steel reinforcement cage 6
It is extended in supporting steel pipe 2 with the top of round steel pipe 11, and round steel pipe 11 is located at the inside of steel reinforcement cage 6, steel reinforcement cage 6 and round steel pipe
11 are encapsulated in by concrete 10 in supporting steel pipe 2 and tube bottom drilling 5.
The construction method of the lock steel pipe splicing pile cofferdam, includes the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, supporting steel pipe 2 is controlled by leading truck
Verticality, inserting piling is carried out to supporting steel pipe 2 using vibration hammer, and the inserting piling depth of supporting steel pipe 2 is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe 2 is fixed with temporary platform, using impact drill in supporting steel
It drills in pipe 2, until process tube bottom drilling 5 in the ground immediately below supporting steel pipe 2, then dregs in cleaning hole；
Step 3：Steel reinforcement cage 6 and round steel pipe 11 are lifted into tube bottom drilling 5 respectively, then pour into concrete 10, is ensured
Concrete 10 did not had the top surface of steel reinforcement cage 6 and round steel pipe 11 completely, until concrete 10 reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile 1 is completed, and ensures the lock steel pipe spliced pile 1 of subsequent installation
I-steel 4 be properly inserted in the lock steel pipe 3 of lock steel pipe spliced pile 1 adjacent thereto, until cofferdam fold is (such as Fig. 1 institutes
Show), then according to working water level, mark goes out purlin horizontal center position on lock steel pipe spliced pile 1, and on supporting steel pipe 2
Profile steel bracket is welded, the support as purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe 2, then by the two
Weld together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and accurately measures the purlin at every supporting beam both ends
Clear spacing carries out blanking to supporting beam further according to clear spacing, supporting beam both ends is then cut into tongue and groove, are finally supported beam
Installation；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, using two
Platform concrete mixer delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile 1 can be extracted one by one, until completing to enclose
The dismounting on weir.
The foreign matters such as rubble and pan soil enter in lock in order to prevent, can locked first before latching 1 underthrust of steel pipe spliced pile
A baffle is welded in 9 lower end of I-steel slot for detaining steel pipe 3, which can only spot welding, it is not possible to which full weld prevents previous lock
Steel pipe spliced pile 1 is unable to reach projected depth, can not all set in place to cause subsequently to latch steel pipe spliced pile 1, finally exist
Direct formwork erection pours pea gravel concreten at lock, ensures the water-stagnating effect of lock.
Scheme in embodiment be not to limit the scope of patent protection of the present invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the claims of this case.
Claims (6)
1. a kind of lock steel pipe splices pile cofferdam, it is characterised in that：It is made of several lock steel pipe spliced piles, the lock steel pipe
Spliced pile includes supporting steel pipe, lock steel pipe, I-steel, tube bottom drilling and steel reinforcement cage；The lock steel pipe and I-steel are parallel
It is welded on supporting steel pipe lateral surface, latches and be in reinforcement connection by triangle stiffener between steel pipe and supporting steel pipe, locked
The solder contacts both sides of button steel pipe and supporting steel pipe are welded with reinforcing bar, and being machined with I-steel in an axial direction in lock steel pipe wall inserts
Slot；The supporting steel pipe is fixed on by inserting piling mode on ground, and the tube bottom drilling is located at the ground immediately below supporting steel pipe
Interior, steel reinforcement cage is located in tube bottom drilling, is extended in supporting steel pipe at the top of steel reinforcement cage, steel reinforcement cage is encapsulated in support by concrete
In steel pipe and tube bottom drilling.
2. the construction method of lock steel pipe splicing pile cofferdam described in claim 1, it is characterised in that include the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, the vertical of supporting steel pipe is controlled by leading truck
Degree carries out inserting piling using vibration hammer to supporting steel pipe, and the inserting piling depth of supporting steel pipe is not up to projected depth；
Step 2：Build temporary platform, supporting steel pipe and temporary platform be fixed, using impact drill in supporting steel pipe into
Row drilling drills, then dregs in cleaning hole up to processing tube bottom in the ground immediately below supporting steel pipe；
Step 3：By in reinforcing bar cage hoisting to tube bottom drilling, concrete is then poured into, ensures that concrete did not had reinforcing bar cage top completely
Face, until concrete reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile is completed, and ensures the I-shaped of the lock steel pipe spliced pile of subsequent installation
Steel is properly inserted in the lock steel pipe of lock steel pipe spliced pile adjacent thereto, until cofferdam fold, then according to working water level
Mark goes out purlin horizontal center position on lock steel pipe spliced pile, and profile steel bracket is welded on supporting steel pipe, is used as and encloses
The support of purlin installation；
Step 5：Ready purlin shaped steel is lifted on profile steel bracket, and is close to supporting steel pipe, is then welded on the two
Together；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and between the purlin for accurately measuring every supporting beam both ends is net
Away from, further according to clear spacing to supporting beam carry out blanking, supporting beam both ends are then cut into tongue and groove, are finally supported the peace of beam
Dress；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, it is mixed using two
Solidifying soil pump truck delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile can be extracted one by one, until completing tearing open for cofferdam
It removes.
3. a kind of lock steel pipe splices pile cofferdam, it is characterised in that：It is made of several lock steel pipe spliced piles, the lock steel pipe
Spliced pile includes supporting steel pipe, lock steel pipe, I-steel, steel reinforcement cage and round steel pipe；The lock steel pipe and the parallel weldering of I-steel
It is connected on supporting steel pipe lateral surface, latches and be in reinforcement connection by triangle stiffener between steel pipe and supporting steel pipe, latched
The solder contacts both sides of steel pipe and supporting steel pipe are welded with reinforcing bar, and being machined with I-steel in an axial direction in lock steel pipe wall inserts
Slot；The supporting steel pipe is fixed on by inserting piling mode on ground, and the round steel pipe is fixed on supporting steel pipe by inserting piling mode
It in the ground of underface, is extended in supporting steel pipe at the top of round steel pipe, the steel reinforcement cage is located at supporting steel pipe bottom, and round steel
The top of pipe is located at the inside of steel reinforcement cage, and the inside of round steel pipe and steel reinforcement cage are packaged by concrete.
4. the construction method of the lock steel pipe splicing pile cofferdam described in claim 3, it is characterised in that include the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, the vertical of supporting steel pipe is controlled by leading truck
Degree carries out inserting piling using vibration hammer to supporting steel pipe, and the inserting piling depth of supporting steel pipe is not up to projected depth；
Step 2：Temporary platform is built, supporting steel pipe and temporary platform are fixed, is arrived round steel pipe inserting piling using impact drill
In ground immediately below supporting steel pipe, the dregs in round steel pipe is then removed；
Step 3：By the bottom of reinforcing bar cage hoisting to supporting steel pipe, concrete is then poured into, ensures that concrete did not had reinforcing bar completely
The top surface of cage and round steel pipe, until concrete reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile is completed, and ensures the I-shaped of the lock steel pipe spliced pile of subsequent installation
Steel is properly inserted in the lock steel pipe of lock steel pipe spliced pile adjacent thereto, until cofferdam fold, then according to working water level
Mark goes out purlin horizontal center position on lock steel pipe spliced pile, and profile steel bracket is welded on supporting steel pipe, is used as and encloses
The support of purlin installation；
Step 5：Ready purlin is lifted on profile steel bracket, and is close to supporting steel pipe, the two is then welded on one
It rises；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and between the purlin for accurately measuring every supporting beam both ends is net
Away from, further according to clear spacing to supporting beam carry out blanking, supporting beam both ends are then cut into tongue and groove, are finally supported the peace of beam
Dress；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, it is mixed using two
Solidifying soil pump truck delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile can be extracted one by one, until completing tearing open for cofferdam
It removes.
5. a kind of lock steel pipe splices pile cofferdam, it is characterised in that：It is made of several lock steel pipe spliced piles, the lock steel pipe
Spliced pile includes supporting steel pipe, lock steel pipe, I-steel, tube bottom drilling, steel reinforcement cage and round steel pipe；The lock steel pipe and I-shaped
Steel is welded in parallel on supporting steel pipe lateral surface, is latched and is carried out reinforcing company by triangle stiffener between steel pipe and supporting steel pipe
It connects, is welded with reinforcing bar in the solder contacts both sides of lock steel pipe and supporting steel pipe, is machined in an axial direction in lock steel pipe wall
I-steel slot；The supporting steel pipe is fixed on by inserting piling mode on ground, under the tube bottom drilling is located at supporting steel pipe just
In the ground of side, steel reinforcement cage and round steel pipe are respectively positioned in tube bottom drilling, and steel reinforcement cage and round steel pipe top extend to supporting steel pipe
In, and round steel pipe is located at the inside of steel reinforcement cage, steel reinforcement cage and round steel pipe and is encapsulated in supporting steel pipe and tube bottom drilling by concrete
In.
6. the construction method of the lock steel pipe splicing pile cofferdam described in claim 5, it is characterised in that include the following steps：
Step 1：Operation platform is built, leading truck is installed on operation platform periphery, the vertical of supporting steel pipe is controlled by leading truck
Degree carries out inserting piling using vibration hammer to supporting steel pipe, and the inserting piling depth of supporting steel pipe is not up to projected depth；
Step 2：Build temporary platform, supporting steel pipe and temporary platform be fixed, using impact drill in supporting steel pipe into
Row drilling drills, then dregs in cleaning hole up to processing tube bottom in the ground immediately below supporting steel pipe；
Step 3：Steel reinforcement cage and round steel pipe are lifted into tube bottom drilling respectively, then pour into concrete, ensures that concrete is complete
The top surface of steel reinforcement cage and round steel pipe is not crossed, until concrete reaches design strength；
Step 4：The installation of follow-up lock steel pipe spliced pile is completed, and ensures the I-shaped of the lock steel pipe spliced pile of subsequent installation
Steel is properly inserted in the lock steel pipe of lock steel pipe spliced pile adjacent thereto, until cofferdam fold, then according to working water level
Mark goes out purlin horizontal center position on lock steel pipe spliced pile, and profile steel bracket is welded on supporting steel pipe, is used as and encloses
The support of purlin installation；
Step 5：Ready purlin is lifted on profile steel bracket, and is close to supporting steel pipe, the two is then welded on one
It rises；If can not be close to, increases steel plate therebetween and welded；
Step 6：Supporting beam installation site is measured in purlin, and between the purlin for accurately measuring every supporting beam both ends is net
Away from, further according to clear spacing to supporting beam carry out blanking, supporting beam both ends are then cut into tongue and groove, are finally supported the peace of beam
Dress；
Step 7：It carries out cofferdam bottom concrete to pour, pours sequence and carried out toward centre at left and right sides of cushion cap, it is mixed using two
Solidifying soil pump truck delivering concrete, and primary concreting completion simultaneously；
Step 8：After Bridge Pier exposes the surface, lock steel pipe spliced pile can be extracted one by one, until completing tearing open for cofferdam
It removes.
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| CN201810816599.4A CN108660941A (en) | 2018-07-24 | 2018-07-24 | A kind of lock steel pipe splicing pile cofferdam and construction method |
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| CN201810816599.4A CN108660941A (en) | 2018-07-24 | 2018-07-24 | A kind of lock steel pipe splicing pile cofferdam and construction method |
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