CN105386408B - Deep-water bridge pile foundation construction method - Google Patents
Deep-water bridge pile foundation construction method Download PDFInfo
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- CN105386408B CN105386408B CN201510733473.7A CN201510733473A CN105386408B CN 105386408 B CN105386408 B CN 105386408B CN 201510733473 A CN201510733473 A CN 201510733473A CN 105386408 B CN105386408 B CN 105386408B
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Abstract
The invention provides a deep-water bridge pile foundation construction method. A self-lifting platform is used as an initial auxiliary platform, and the end part of the self-lifting platform is welded and fixedly connected with a guide frame; a segmented cantilever of the guide frame is lengthened; the sinking, the positioning and the rock-socketed anchoring are performed for steel protective cylinders in sequence; and the cantilever type guide frame is fixedly connected with each steel protective cylinder to form an operation platform for formal hole and pile forming construction. The construction method is strong in adaptability under bad environment condition; the guide frame is segmented and prefabricated, is welded and fixedly connected by segments, and is lengthened through the flange connection to form a dual-layer guide adjustment system, so that the rigidity is high, the sinking precision of the steel protective cylinders is high, and the construction is convenient and safe; the guide frame has dual functions; in the early stage, the guide frame serves as a steel protective cylinder sinking guide system; and in the later stage, the guide frame serves as a construction platform surface layer bearing structure; and the deep-water bridge pile foundation construction method has the advantages of short construction period, low time and material consumption and high operation efficiency.
Description
Technical field
The present invention relates to technical field of bridge construction, it is more particularly related to deep-water bridge pile base construction method.
Background technology
With economic fast development, the demand of communications and transportation increases rapidly, and large-scale over strait, river-spanning bridge is increasingly
Many, the first-selected base form that bearing capacity is high, stay-in-grade cast-in-situ bored pile is most absolutely sciences of bridge building.Bored pile foundation
Construction be whole bridge construction operation basic link, be also link the most particularly important.
Naked rock or shallow overburden waters Bridge Pile Foundation Construction platform typically adopt fixed platform and floating platform.Fixed
Platform is divided into builds island platform, steel pile casting+initial auxiliary steel pipe pile platform, steel cofferdam platform etc.；Floating platform is divided into pontoon, buoyancy tank
Platform and floating steel suspended box cofferdam platform etc..But it is under the mal-conditions such as deep water, big flow velocity, macrotidal range, high wind wave, above
All there is certain defect in flat form.
For building island platform, (sand and stone etc.) quantities of banketing is larger, long in time limit, and cost is high；For steel pile casting+initial auxiliary
Help steel pipe pile platform, engineering ship is difficult in place, and steel pile casting and steel-pipe pile are both needed to that embedding rock anchor is solid, and sinking is of poor quality, assists steel pipe
Stake platform self-stability has high demands, and erection construction technical difficulty is big, and steel pile casting needs progressively to push away successively using special leading truck
Enter, shift and just can complete sinking, operation changes numerous and diverse, long construction period；Steel cofferdam platform, floating steel suspended box cofferdam are put down
Platform, pontoon and buoyancy tank platform etc., anchor system arrangement quantities is big, and location technology difficulty is big, and takies waters greatly, and the cycle is long, shadow
Ring navigation channel ship to pass through.
Content of the invention
It is an object of the invention to solving at least the above and defect, and provide the advantage that will be described later.
It is a still further object of the present invention to provide a kind of deep-water bridge pile base construction method, solve in above-mentioned background technology
Shortcoming, by the use of jack-up unit as assistance platform, be fixedly arranged on jack-up unit in leading truck one end, other end merogenesis to
Front boom spreading, and carry out steel pile casting sinking, anchoring successively, can be used as follow-up pile foundation construction after leading truck and steel pile casting consolidation
Formal job platform.Construction method of the present invention is particularly suited for the extreme natural environments such as deep water, macrotidal range, high sea and plunges into the commercial sea
(river) bed is the construction of bridge pile foundation under the conditions of naked rock or shallow overburden.
In order to realize according to object of the present invention and other advantages, there is provided a kind of deep-water bridge pile foundation construction side
Method, comprises the following steps:
S1, positioning jack-up unit, the leading truck group of first sections is fixed on described jack-up unit front end, described guiding
Frame group is provided with the sinking hole of at least two placement steel pile casting；
S2, by steel pile casting sinking in the sinking hole needing leading pile, carry out that embedding rock anchor is solid and bore forming, then to other
Sinking in the hole sinking steel pile casting simultaneously carries out embedding rock anchoring construction, with the leading truck group of first sections as load-carrying members, sets up first sections
Operation platform, removes described jack-up unit afterwards；
S3, the leading truck group of second section is lifted carry out spreading to the leading truck group front end of first sections, sinking steel one by one
Casing simultaneously carries out embedding rock anchoring construction, with the leading truck group of second section as load-carrying members, sets up second section operation platform；With
And
S4, repeat step s3, until all segmental construction platform buildings finish, become to the steel pile casting of non-bore forming
Pile driving construction；
Wherein, the leading truck group of any one sections is several guiding frameworks perpendicular to described jack-up unit front end
Become, shown leading truck is the truss structure of upper, middle and lower compound steel pipe composition.
Preferably, in step s1, the positioning of jack-up unit comprises the following steps:
S11, complete just to position using gps System guides jack-up unit, check jack ups using at least two total powerstations
The positioning of platform；
S12, by described total powerstation control jack-up unit hydraulic column decentralization.
Preferably, sinking steel pile casting described in step s2 comprises the following steps:
S21, by gps alignment system measure stake position center, thus positioning rig, by design checking later stage jack up
After platform is removed, operation platform from steady condition, determine the sinking hole needing leading pile, using the little stroke of rig to pile position
Scar impacted, until flat for the punching of the scar of pile position, then scar is washed into the deep pitting of 0.5m；
S22, lifting steel pile casting corresponding sinking hole on leading truck, by steel pile casting vertical subsidence extremely described pitting, steel
Casing checks off normal and the gradient of steel pile casting after reaching scar, meet and with shaped steel, steel pile casting top temporary consolidation is existed after requiring
On leading truck, if being unsatisfactory for requiring, lifting steel pile casting is adjusted again.
Preferably, embedding rock anchor described in step s2 is solid and bore forming comprises the following steps:
S23, in the steel pile casting of pile position, it is punched out operation, described steel pile casting is followed up with hole depth, until institute
State steel pile casting and reach design socket length, pour steel pile casting bottom concrete, between filling between described steel pile casting and basement rock
Gap；
S24, spudded in using little stroke repeated stock pulping in described steel pile casting, timely borehole cleaning behind whole hole, and carry out hole
Bottom sediment detection and pore-forming Data Detection, after detection is passed through, transfer precast reinforced cage successively and fill concrete conduit, and sunk again
Slag detects, detection, by rear cast underwater concrete, completes bore forming；
S25, the steel pile casting to non-pile position carry out embedding rock anchor admittedly according to the method for step s23.
Preferably, also include in step s2 being connected between adjacent steel pile casting, particularly as follows: adjacent steel pile casting passes through lateral
It is attached with diagonal brace, lateral adopts Harvard weld, and welding quality is pressed three-level weld seam standard test and controlled.
Preferably, the construction of spreading described in step s3 comprises the following steps:
S31, between the steel pile casting in first section leading truck group, shaped steel is welded as the lower horizontal stroke of the middle level steel pipe of leading truck
Beam, and weld middle level steel pipe and the sill of u shaped steel sheet fixed guide frame, outside the steel pile casting in first sections leading truck group end
Side Weld-supporting bracket；
S32, the front end being lifted second section leading truck group using crawler crane to first sections leading truck, are connected by flange
Carry out spreading.
The present invention at least includes following beneficial effect:
1st, deep-water bridge pile foundation construction is carried out based on jack-up unit, construction environment applicability is good, especially in deep water, spring tide
There is under the extreme natural environments such as difference, high sea preferable applicability；
2nd, leading truck has dual-use function, and, as steel pile casting guidance system, the later stage is as operation platform surface layer load-bearing for early stage
Structure；
3rd, cantilevered leading truck adopts merogenesis to make, and live flange connects extension, and often saves the steel of leading truck and anchoring
Casing carries out welding consolidation, and structural stability is higher, it is to avoid be likely to occur, in the case of great cantilever, the risk toppled, construction is more
Plus it is safe and reliable；
4th, leading truck sinking hole is highly big, and rigidity is big, and arranges upper and lower two-layer pushing tow adjusting means, and adjustable range is big, leads
Good to ability, steel pile casting sinking quality is good in the presence of a harsh environment, high precision；
5th, combine auxiliary steel pipe pile platform construction method compared to steel pile casting, construction material can be saved in a large number, the construction period contracts
Short.
Part is embodied by the further advantage of the present invention, target and feature by description below, and part also will be by this
Invention research and practice and be understood by the person skilled in the art.
Brief description
Fig. 1 is the schematic diagram of steel pile casting stake position in the present invention；
Fig. 2 is the schematic diagram of steel pile casting depositing step in the present invention；
Fig. 3 is the schematic diagram of steel pile casting embedding rock anchors step in the present invention；
Fig. 4 is the schematic diagram of rock-socketed pile pile step in the present invention；
Fig. 5 is the schematic diagram of steel pile casting lateral step in the present invention；
Fig. 6 is the schematic diagram of erection construction platform step in the present invention；
Fig. 7 is the schematic diagram in the present invention to remaining pile foundation construction step.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art with reference to specification literary composition
Word can be implemented according to this.
It should be appreciated that used herein such as " have ", "comprising" and " inclusion " term do not allot one or many
The presence of individual other element or a combination thereof or interpolation.
A kind of deep-water bridge pile base construction method, comprises the following steps:
S1, positioning jack-up unit, the leading truck group of first sections is fixed on described jack-up unit front end, described guiding
Frame group is provided with the sinking hole of at least two placement steel pile casting；Jack-up unit is applied to deep water sea area pile foundation construction.Compare
Assistance platform (or trestle) construction of prior art, saves construction material, shortens the time setting up assistance platform；Compare
Pile driving barge, in exposed waters, preferably, steel pile casting positioning construction precision is high for platform stabilization；Guide body structure is stable, and compares
Bailey beam platform, material-saving, the reduction of erection time.
S2, by steel pile casting sinking in the sinking hole needing leading pile, carry out that embedding rock anchor is solid and bore forming, then to other
Sinking in the hole sinking steel pile casting simultaneously carries out embedding rock anchoring construction, with the leading truck group of first sections as load-carrying members, sets up first sections
Operation platform, removes described jack-up unit afterwards；Jack-up unit is after the completion of having carried out first segment platform construction, you can
Enter the construction of next pier position, improve the utilization rate of machinery, contribute to shortening construction period；
S3, the leading truck group of second section is lifted carry out spreading to the leading truck group front end of first sections, sinking steel one by one
Casing simultaneously carries out embedding rock anchoring construction, with the leading truck group of second section as load-carrying members, sets up second section operation platform；This
Flange is adopted to connect spreading in invention, compared to cantilever monoblock type leading truck, flange connects the structural stability extending more preferably, no
Easily topple.And flange connection construction safer reliable and stable and
S4, repeat step s3, until all segmental construction platform buildings finish, become to the steel pile casting of non-bore forming
Pile driving construction；
Wherein, the leading truck group of any one sections is several guiding frameworks perpendicular to described jack-up unit front end
Become, shown leading truck is the truss structure of upper, middle and lower compound steel pipe composition.
In step s1, the positioning of jack-up unit comprises the following steps:
S11, complete just to position using gps System guides jack-up unit, check jack ups using at least two total powerstations
The positioning of platform；
S12, by described total powerstation control jack-up unit hydraulic column decentralization.
Sinking steel pile casting described in step s2 comprises the following steps:
S21, by gps alignment system measure stake position center, thus positioning rig, by design checking later stage jack up
After platform is removed, operation platform from steady condition, determine the sinking hole needing leading pile, using the little stroke of rig to pile position
Scar impacted, until flat for the punching of the scar of pile position, then scar is washed into the deep pitting of 0.5m；Checking computations content is structure
Stability against overturning and stability against slope.Including, first segment platform under steady condition and Construction State from steady bar
Part checks, and the stable condition after platform is performed integrally checks.Determine that reaching stable condition needs several positions to complete to fill concrete pile
Construction；
S22, lifting steel pile casting corresponding sinking hole on leading truck, by steel pile casting vertical subsidence extremely described pitting, steel
Casing checks off normal and the gradient of steel pile casting after reaching scar, meet and with shaped steel, steel pile casting top temporary consolidation is existed after requiring
On leading truck, if being unsatisfactory for requiring, lifting steel pile casting is adjusted again.
Embedding rock anchor described in step s2 is solid and bore forming comprises the following steps:
S23, in the steel pile casting of pile position, it is punched out operation, described steel pile casting is followed up with hole depth, until institute
State steel pile casting and reach design socket length, pour steel pile casting bottom concrete, make concrete and mortar fill described steel pile casting with
Gap between basement rock；
S24, spudded in using little stroke repeated stock pulping in described steel pile casting, timely borehole cleaning behind whole hole, and carry out hole
Bottom sediment detection and pore-forming Data Detection, after detection is passed through, transfer precast reinforced cage successively and fill concrete conduit, and sunk again
Slag detects, detection, by rear cast underwater concrete, completes bore forming；
S25, the steel pile casting to non-pile position carry out embedding rock anchor admittedly according to the method for step s23.Adopt compared to pile driving barge
Steel pile casting is directly squeezed into exposed bedrock layer with vibratory drilling method, the embedding rock anchor of pre-punched hole can guarantee that steel pile casting lower end will not become admittedly
Shape is it is ensured that pile quality.
Also include in step s2 being connected between adjacent steel pile casting, particularly as follows: adjacent steel pile casting passes through lateral and diagonal brace
It is attached, lateral adopts Harvard weld, and welding quality is pressed three-level weld seam standard test and controlled.
The construction of spreading described in step s3 comprises the following steps:
S31, between the steel pile casting in first section leading truck group, shaped steel is welded as the lower horizontal stroke of the middle level steel pipe of leading truck
Beam, and weld middle level steel pipe and the sill of u shaped steel sheet fixed guide frame, outside the steel pile casting in first sections leading truck group end
Side Weld-supporting bracket；
S32, the front end being lifted second section leading truck group using crawler crane to first sections leading truck, are connected by flange
Carry out spreading.
Embodiment 1
As shown in figs. 1-7, a kind of deep-water bridge pile base construction method comprises the following steps:
First, jack-up unit positioning
Just position.Complete just to position from weather moor using gps System guides accommodation, survey crew adopts 2 in bank side
Total powerstation adopts forward intersection to check.
It is accurately positioned and be carried out in two steps.First hydraulic column of decentralization, controls hydraulic prop using 2 total powerstation forward intersections
The trimming of outer contour, through check errorless after transfer immediately；Transfer other three hydraulic props successively.
Platform is lifted.For convenience of the bore operation in steel pile casting, jack-up unit is lifted, be should ensure that jack up is put down
Platform distance from bottom water surface elevation >=maximum wave height.
2nd, leading truck positioning
Leading truck 1 is steel pipe truss structures, and welding is fixedly arranged at jack-up unit 2, is welded to each other consolidation between leading truck 1.
Leading truck 1 arranges three layers of truss of upper, middle and lower, be provided with leading truck 1 for steel pile casting positioning, apply heavy during correction, adjustment and lock
Fixed device, has enough intensity, rigidity, disclosure satisfy that the design use requirement of sinking steel pile casting.
3rd, pile foundation steel-pipe pile pile and steel pile casting embedding rock anchoring construction
(1) advance borehole
Rig measures Zhuan Wei center in jack-up unit 2 by gps alignment system, is accurately positioned rig.Tested by design
Calculate steel pile casting platform construction period in later stage from steady condition, determine the pile quantity of steel-pipe pile, pile quantity be 2, pile position
For 1# and 3# stake position.Repeated stock is carried out to 1#, 3# stake position using the little stroke of rig, until flat for scar punching in stake position, then by rock
Face be washed into 0.5m about depth pitting.
(2) steel pile casting sinking
Lift by crane 1#, 3# stake steel pile casting respectively, after being lifted to corresponding hole site on leading truck 1, monitoring casing perpendicularity meets will
After asking, by steel pile casting 3, slowly vertical subsidence, to pigeon hole, checks steel pile casting 3 off normal and inclination after steel pile casting 3 arrival scar
Degree, meet require after with shaped steel by steel pile casting 3 top temporary consolidation on leading truck 1, if be unsatisfactory for require; hoisting steel again
Casing 3 is adjusted.
(3) embedding rock anchor is solid
Rig is again in place, is punched out operation in 1#, 3# steel pile casting 3, and steel pile casting 3 is followed up with hole depth, directly
Reach design socket length to 1#, 3# stake steel pile casting 3, pour steel pile casting 3 bottom concrete, enable concrete and mortar to fill steel
Gap between casing 3 and basement rock.Check casing periphery and scar encapsulation situations, if any compared with big gap, using bagged concrete
Block under water.
(4) 1#, 3# rock-socketed pile bore forming
After rig is accurately positioned, in 1#, 3# steel pile casting 3, (Fig. 4) is spudded in using little stroke repeated stock pulping.Whole hole
Afterwards, carry out borehole cleaning in time, and carry out the detection of bottom hole sediment and pore-forming Data Detection.After stake holes detection is passed through, transfer prefabricated successively
Steel reinforcement cage 5 and filling concrete conduit, and sediment detection again, if sediment thickness is unsatisfactory for design requirement, carry out secondary pile hole cleaning.Borehole cleaning
Terminate to remove and inhale mud elbow, start to pour into a mould underwater concrete, complete rock-socketed pile bore forming.
(5) the embedding rock anchoring construction of 2#, 4#, 5#, 6# pile foundation steel pile casting 3
2#, 4#, 5#, 6# stake steel pile casting 3 is carried out using the solid construction method of rock anchor embedding with 1#, 3# stake steel pile casting 3 identical
Anchoring construction.
4th, steel pile casting 3 lateral construction
After the completion of every steel pile casting 3 anchoring, carried out even by lateral and diagonal brace with the steel pile casting 3 of adjacent construction immediately
Connect.Steel pipe lateral adopts Harvard weld it is desirable to welding quality presses three-level weld seam standard test control, and meet design will simultaneously
Ask.
5th, leading truck 1 consolidate, spreading
(1) leading truck 1 consolidates
Between 1#～6# pile foundation steel pile casting 3, using shaped steel welding drilling platform supporting sill, and 1#, 3#, 4#,
Outside 6# pile foundation steel pile casting 3, drilling platform support bracket is welded using shaped steel, be directed between frame 1 lower floor's steel pipe and shaped steel logical
Cross several piece u shaped steel sheet welding consolidation.
(2) leading truck 1 spreading
Prefabricated positioning guiding rack 1 sections is lifted using crawler crane to positioning guiding rack 1 front end of construction, by method
Blue connection carries out spreading.
6th, the remaining embedding rock anchoring construction of pile foundation steel pile casting 3
The whole spreading of positioning guiding rack 1, carries out the embedding rock anchoring construction of 7#, 8#, 9# pile foundation steel pile casting 3, then carry out 10#,
The embedding rock anchoring construction of 11#, 12# pile foundation steel pile casting 3, construction method is identical with steel pile casting 3 construction method of above construction.
7th, operation platform is set up
After the completion of the embedding rock anchor of steel pile casting 3 is solid, steel pile casting 3 is respectively welded and is fixedly arranged on leading truck 1.With leading truck 1 as face
Layer load-carrying members, arrangement distribution beam and panel, form formal Pile Installation Platform 4.Cut off positioning guiding rack 1 to put down with jack up
Connection between platform 2, jack-up unit 2 drop to the water surface, deactivates.
8th, remaining pile foundation bore forming
On steel pile casting 3 operation platform, carry out respectively 2#, 4-12# irrigate steel pipe pile foundation pile construction, construction method with
1#, 3# cast-in-place pile construction method of construction is identical.
The industrial applicibility of the present invention
1st, deep-water bridge pile foundation construction is carried out based on jack-up unit, construction environment applicability is good, especially in deep water, spring tide
There is under the extreme natural environments such as difference, high sea preferable applicability；
2nd, leading truck has dual-use function, and, as steel pile casting guidance system, the later stage is as operation platform surface layer load-bearing for early stage
Structure；
3rd, cantilevered leading truck adopts merogenesis to make, and live flange connects extension, and often saves the steel of leading truck and anchoring
Casing carries out welding consolidation, and structural stability is higher, it is to avoid be likely to occur, in the case of great cantilever, the risk toppled, construction is more
Plus it is safe and reliable；
4th, leading truck sinking hole is highly big, and rigidity is big, and arranges upper and lower two-layer pushing tow adjusting means, and adjustable range is big, leads
Good to ability, steel pile casting sinking quality is good in the presence of a harsh environment, high precision；
5th, combine auxiliary steel pipe pile platform construction method compared to steel pile casting, construction material can be saved in a large number, the construction period contracts
Short.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in specification and embodiment
With.It can be applied to various suitable the field of the invention completely.For those skilled in the art, can be easily
Realize other modification.Therefore under the universal being limited without departing substantially from claim and equivalency range, the present invention does not limit
In specific details with shown here as the legend with description.
Claims (4)
1. a kind of deep-water bridge pile base construction method is it is characterised in that comprise the following steps:
S1, positioning jack-up unit, the leading truck group of first sections is fixed on described jack-up unit front end, described leading truck group
It is provided with the sinking hole of at least two placement steel pile casting；
S2, by steel pile casting sinking in the sinking hole needing leading pile, carry out that embedding rock anchor is solid and bore forming, then to other sinkings
In the hole sinking steel pile casting simultaneously carries out embedding rock anchoring construction, with the leading truck group of first sections as load-carrying members, sets up first segmental construction
Platform, removes described jack-up unit afterwards；
S3, the leading truck group of second section is lifted carry out spreading to the leading truck group front end of first sections, sinking steel pile casting one by one
And carry out embedding rock anchoring construction, with the leading truck group of second section as load-carrying members, set up second section operation platform；And
S4, repeat step s3, until all segmental construction platform buildings finish, carry out pile to the steel pile casting of non-bore forming and apply
Work；
Wherein, the leading truck group of any one sections is that several leading trucks perpendicular to described jack-up unit front end are constituted, institute
State the truss structure that leading truck is upper, middle and lower compound steel pipe composition；
Wherein, in step s1, the positioning of jack-up unit comprises the following steps:
S11, complete just to position using gps System guides jack-up unit, check jack-up units using at least two total powerstations
Positioning；
S12, by described total powerstation control jack-up unit hydraulic column decentralization；
Wherein, sinking steel pile casting described in step s2 comprises the following steps:
S21, by gps alignment system measure stake position center, thus positioning rig, by design checking later stage jack-up unit
After removing, operation platform from steady condition, determine the sinking hole needing leading pile, using the rock to pile position for the little stroke of rig
Face is impacted, until the scar punching pile position is flat, then scar is washed into the deep pitting of 0.5m；
S22, lifting steel pile casting corresponding sinking hole on leading truck, by steel pile casting vertical subsidence extremely described pitting, steel pile casting
Check off normal and the gradient of steel pile casting after reaching scar, meet steel pile casting top temporary consolidation after requiring with shaped steel in guiding
On frame, if being unsatisfactory for requiring, lifting steel pile casting is adjusted again.
2. deep-water bridge pile base construction method as claimed in claim 1 it is characterised in that embedding rock anchor described in step s2 solid with
And bore forming comprises the following steps:
S23, in the steel pile casting of pile position, it is punched out operation, described steel pile casting is followed up with hole depth, until described steel
Casing reaches design socket length, pours steel pile casting bottom concrete, to fill the gap between described steel pile casting and basement rock；
S24, spudded in using little stroke repeated stock pulping in described steel pile casting, timely borehole cleaning behind whole hole, and carry out bottom hole and sink
Slag detection and pore-forming Data Detection, after detection is passed through, transfer precast reinforced cage successively and fill concrete conduit, and carry out sediment inspection again
Survey, detection, by rear cast underwater concrete, completes bore forming；
S25, the steel pile casting to non-pile position carry out embedding rock anchor admittedly according to the method for step s23.
3. deep-water bridge pile base construction method as claimed in claim 2 is it is characterised in that also include adjacent steel in step s2
It is connected between casing, particularly as follows: adjacent steel pile casting is attached by lateral and diagonal brace, lateral adopts Harvard weld,
And welding quality presses three-level weld seam standard test control.
4. deep-water bridge pile base construction method as claimed in claim 3 is it is characterised in that the construction of spreading described in step s3
Comprise the following steps:
S31, between the steel pile casting in first section leading truck group, shaped steel is welded as the sill of the middle level steel pipe of leading truck, and
The middle level steel pipe of welding u shaped steel sheet fixed guide frame and sill, the outside weldering of the steel pile casting in first sections leading truck group end
Connect support bracket；
S32, the front end being lifted second section leading truck group using crawler crane to first sections leading truck, are connected by flange and carry out
Spreading.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510733473.7A CN105386408B (en) | 2015-11-02 | 2015-11-02 | Deep-water bridge pile foundation construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510733473.7A CN105386408B (en) | 2015-11-02 | 2015-11-02 | Deep-water bridge pile foundation construction method |
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| CN105386408A CN105386408A (en) | 2016-03-09 |
| CN105386408B true CN105386408B (en) | 2017-01-25 |
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