CN206859219U - The steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity - Google Patents
The steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity Download PDFInfo
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- CN206859219U CN206859219U CN201720613617.XU CN201720613617U CN206859219U CN 206859219 U CN206859219 U CN 206859219U CN 201720613617 U CN201720613617 U CN 201720613617U CN 206859219 U CN206859219 U CN 206859219U
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Abstract
The utility model discloses a kind of steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity, belong to coastal environments field of bridge construction, using first setting up and anchoring starting platform, rely on platform cantilever to weld three layers of leading truck, transfer steel pile casting.Impact drill stays position on cantilever leading truck, and to carrying out impact operation in steel pile casting, after steel pile casting progressively is impacted into follow-up, recharge concrete anchors steel pile casting in casing, then by steel pile casting and rear starting platform stable connection.Leading truck is removed, next row steel pile casting of constructing successively, and stable drilling platform is formed by root lateral.After forming Partial flats, you can spudded in every hole.The program eliminates the Platform pipe stake in conventional casing area, and assistance platform stake had not only been used as after steel pile casting anchoring but also has been used as pile steel pile casting.The utility model is that a kind of innovation is applied to shallow overburden, profundal zone, flow velocity big, the multi-column pier foundation constructing device of oblique rock surface and method.
Description
Technical field
The utility model belongs to coastal environments field of bridge construction, more particularly to suitable for shallow overburden, profundal zone, flow velocity
Greatly, the multi-column pier foundation construction of oblique rock surface, particularly steel pile casting are constructed.
Background technology
At present, the large-scale drilling pile group pile foundation routine of Offshore Bridges is set up drilling using pile driving barge inserting piling assistance platform stake and put down
Platform, then rely on drilling platform using crane gear lifting vibration hammer by the way of by root transfer Large-diameter Steel casing, steel pile casting with
Platform stake connects to form reliable drilling construction platform.This method construction applicability is wide, and work efficiency is higher, and application is more universal.I
Most bridge spanning the seas such as Donghai Bridge that state has been open to the traffic, Hangzhou Gulf Great Bridge, Jintang Bridge, Quanzhouwan bridge were using should
Technique.
But in coastal environments bridge construction, influenceed by tide and geology change etc., sea bed change is violent, special at some
It is coastal under the conditions of, exposed bedrock or coating are very thin, and sea bed face rises and falls uneven, and steel pile casting can not pass through common process inserting piling
And trusted platform is formed, large bridge route selection and construction are often had a great influence.
By taking certain engineering A as an example, the Bridge Project uses main span 340m double tower combination girder stayed-cable bridges, and bridge is typical coastal
Environment bridge, bridge location depth of water maximum 36m, flow velocity reach 2.93m/s, and hydrological environment is more typical in coastal bridge.Certain Sarasota
Cushion cap divides into 26 Φ 2.8m cast-in-situ bored pile, a length of 62m of Single Pile, and pile foundation presses Design of Rock Socketed Pile, contains angle with middle weathering
Gravel tufa stone is bearing course at pile end.Pile foundation steel pile casting internal diameter is Φ 3.1m, wall thickness δ 20mm, 28~40m of length.The master
Dun Chu is the typical coastal big naked rock condition in slope.The main pier oblique rock surface, fluctuations are big, and the clump of piles scope discrepancy in elevation reaches
12.5m, sea bed face inclination angle are cross-bridges, the vertical two-way slope of bridge up to 29 degree.The pier position exposed bedrock simultaneously, local complexity thickness
Degree is only 1.5m, and underlying rock surface strength reaches 44Mpa, and bearing course at pile end rock strength reaches 68MPa.Therefore routinely group
Pile foundation construction technique can not carry out steel pile casting sinking construction.
At present, there are three kinds of arrangement and method for construction for macrotype platform under similar severe hydrogeologic condition：
(1) pile driving barge or the direct inserting piling steel pile casting arrangement and method for construction of crane ship：
Steel pile casting is transferred under the conditions of some shallow overburdens, and pile driving barge equipped hydraulic hammer or diesel hammer can be used directly to hammer
Steel pile casting, certain depth is squeezed into, and then form drilling platform.And for foregoing Bridge Project A, to overcome vibration hammer to shake
Heavy steel pile casting can not enter the situation of rock, and pile driving barge progress steel pile casting is set up and has carried out structural analysis.Strengthen in steel pile casting bottom
With steel pile casting set up process it is indeformable in the case of, steel pile casting is only capable of entering rock stratum 60cm, can not realize Stability Analysis of Structures.Thus,
The program is not suitable for engineering A.
(2) large jacket scheme：
I.e. by more steel pile castings of whole pier position, in place, prefabricated welding is completed in advance, is transported, used by large ship
Lifting ship is directly positioned, hung at the scene.After completing positioning, underwater cofferdam is transferred on the outside of jacket, by cofferdam
Casting concrete is anchored with basis, then relies on the anchored platform to carry out drilled pile construction.
But this scheme has certain limitation for the execution conditions, causes foregoing Bridge Project A can not implement with the program：
Shallow, thin cover layer cleaning difficulty is big, and concrete is uncertain big with basement rock anchoring effect；Oblique rock surface angle is larger, jacket
The bottom discrepancy in elevation is big, due to the mobility of concrete, can not ensure to carry out whole anchorings to jacket basis；Oblique rock surface angle compared with
Greatly, every jacket foundation elevation difference is larger, big per pile foundation absolute altitude control difficulty to jacket；Large jacket deadweight compared with
Greatly, larger crane ship is needed, and foregoing Bridge Project A bridge locations both sides are influenceed by existing bridge and high-voltage line headroom over strait, greatly
Type crane ship can not be marched into the arena, and jacket hoisting operation condition is limited.
(3) line lift bench scheme：
Self-propelled lift bench sinking steel pile casting is relied on, a clump of piles is formed after the anchoring of steel pile casting sinking, is taken on clump of piles casing
If platform is drilled.
The same program has larger limitation, causes foregoing Bridge Project A can not implement with the program：Lift bench operation water
It there are certain requirements deeply, and foregoing engineering A bridges waters maximum water depth is more than 30m, more than the limitation of lift bench maximum water depth；Rise
Peaceful there are certain requirements to flow rate of water flow and basic slope degree condition, it is ensured that self stability.
Utility model content
The purpose of this utility model is：An in view of domestic and international existing large-scale clump of piles of being constructed under severe hydrogeologic condition
The method of basic steel pile casting can not be applied to some coastal specific bodies of water, it is therefore desirable to which that researches and develops a kind of innovation is applied to shallow cover
Cap rock (intectate, exposed bedrock or local complexity thickness degree are less than 2m), (depth of water or maximum water depth are no more than for profundal zone
40m), the multi-column pier foundation construction of flow velocity big (flow velocity is no more than 4m/s), oblique rock surface (maximum sea bed face inclination angle is no more than 60 degree)
Device and method, the scope of application of pile foundation construction is improved, meet coastal severe hydrologic condition, the changeable shallow overburden feelings of complicated geology
Multi-column pier foundation construction under condition.
The utility model purpose is realized by following technical proposals：
A kind of steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity, including main trestle, with main trestle
The starting platform of connection, for the leading truck of the steel pile casting sinking of drilling platform, and vibration hammer and impact drill；Starting platform position
On the outside of drilling platform, using the steel pipe pile foundation of concrete anchoring；Leading truck is located at starting platform towards drilling platform side
A contilever platform is formed, and leading truck is welded on and has completed the solid starting platform steel pipe pile foundation lateral position of embedding rock anchor, or
Leading truck is located at drilling platform and forms a contilever platform towards the steel pile casting side for being intended to sinking, and leading truck has been welded on outermost
On the outside wallboard for completing the steel pile casting of anchoring temporarily；Lateral is welded between leading truck, leading truck includes the cantilever machine being connected
Structure and guide housing, cantilever mechanism weld with starting platform steel-pipe pile or steel pile casting, and guide housing is sandwich construction parallel up and down, respectively
The pilot hole that a receiving steel pile casting sinking passes through is correspondingly provided with layer vertically, forms a vertical guide channel, impact drill is stayed
Position is on leading truck.
Alternatively, drilling platform is formed by root lateral between each steel pile casting.In the program, by between steel pile casting by root
Lateral forms stable drilling platform, after forming Partial flats, you can spudded in every hole.The program eliminates conventional casing area
Platform pipe stake, assistance platform stake was not only used as after steel pile casting anchoring but also has been used as pile steel pile casting.
Alternatively, guide housing is the cuboid frame of three-decker.In the program, there is enough intensity, rigidity, can
Meet the requirement of sinking steel pile casting when flow velocity is big, wind speed is big, wave is high.
The foregoing main scheme of the utility model and its each further selection scheme can be with independent assortments to form multiple schemes,
The scheme that can be used and be claimed for the utility model；And the utility model, (each non conflicting selection) selection between and and
Can also independent assortment between other selections.Those skilled in the art after the utility model is understood according to prior art and
Common knowledge, which can understand, multiple combinations, is the claimed technical scheme of the utility model, does not do exhaustion herein.
The course of work is：The utility model is different from conventional steel pile casting sinking construction, employs new steel pile casting sinking side
Case：I.e. using first setting up and anchoring starting platform, platform cantilever welding leading truck is relied on, transfers steel pile casting.Impact drill exists in position
On cantilever leading truck, to carrying out impact operation in steel pile casting, after steel pile casting progressively to be impacted to follow-up projected depth, recharge in casing
Concrete anchors steel pile casting, then by steel pile casting and rear starting platform stable connection.Leading truck is removed, next row steel of constructing successively
Casing, and stable drilling platform is formed by root lateral.And after forming Partial flats, you can spudded in every hole.The program is cancelled
The Platform pipe stake in conventional casing area, not only as assistance platform stake but also pile steel pile casting was used as after steel pile casting anchoring.
The beneficial effects of the utility model：For some compared with other external interior cable-stayed bridges, there is main pier construction environment
The coastal Bridge Project of the characteristics of extremely severe, complicated, be not suitable for using domestic and international still some similar hydrology, geological conditions at present
Lower Analysis on Large-scale Group Piles Foundation construction method.The conventional single sinking work efficiency of steel pile casting is about 1~2 day, the main pier using the utility model
Single about 7 days steel pile casting used times complete, and the bridge pier can complete 26 in about 50 days by taking 4 sets of leading trucks as an example in 7 cycle periods
Root steel pile casting sinking is constructed, and pore forming process none root casing spillage, effectively ensure that pore-forming efficiency and pile quality, solves
The Analysis on Large-scale Group Piles Foundation construction of complex condition, invaluable experience is have accumulated for the construction of severe water environment steel pile casting, is further pushed away
The development of Large Span Bridges construction technique is moved.
Brief description of the drawings
Fig. 1 is the leading truck mounting plane structural representation of the utility model embodiment；
Fig. 2 is the leading truck mounting vertical plane structural representation of the utility model embodiment；
Fig. 3 is the flat state schematic diagram of the construction first row steel fender pile of the utility model embodiment；
Fig. 4 is the flat state schematic diagram that the steel fender pile construction of the utility model embodiment finishes；
Wherein 1 be main trestle, 2 be starting platform, 3 be intended to sinking steel pile casting position, 4 be steel pile casting, 5 be guide housing,
51 it is pilot hole, 6 be cantilever mechanism, 7 be lateral, 8 be the steel pipe pile foundation of concrete anchoring, 9 is drilling platform.
Embodiment
Following non-limiting examples are used to illustrate the utility model.
Certain bridge A uses main span 340m double tower combination girder stayed-cable bridges, and bridge is typical coastal environments bridge, the bridge location depth of water
Maximum 36m, flow velocity reach 2.93m/s, and hydrological environment is more typical in coastal bridge.Its cushion cap divides into 26 Φ 2.8m brill
Hole pouring pile, a length of 62m of Single Pile, pile foundation press Design of Rock Socketed Pile, using middle weathering tufa stone containing dust as bearing course at pile end.Stake
Base steel pile casting internal diameter is Φ 3.1m, wall thickness δ 20mm, 28~40m of length.
Bridge A main Dun Chu is the typical coastal big naked rock condition in slope.Main pier oblique rock surface, fluctuations are big, group
The stake scope discrepancy in elevation reaches 12.5m, and sea bed face inclination angle is cross-bridges, the vertical two-way slope of bridge up to 29 degree.The pier position basement rock is naked simultaneously
Dew, local complexity thickness degree is only 1.5m, and underlying rock surface strength reaches 44Mpa, and bearing course at pile end rock strength reaches
68MPa。
Steel pile casting sinking scheme relies on platform cantilever welding leading truck, transfers steel using first setting up and anchoring starting platform 2
Casing 4.Impact drill stays position on cantilever leading truck, and to carrying out impact operation in steel pile casting 4, steel pile casting 4 is progressively impacted to follow-up
After 3m, recharge concrete anchors steel pile casting 4 in steel pile casting 4, then by steel pile casting 4 and the stable connection of rear starting platform 2.Dismounting is led
To frame, next row steel pile casting 4 of constructing successively, and stable drilling platform 9 is formed by root lateral 7.Forming portion branch borehole platform 9
Afterwards, you can spudded in every hole.The program eliminates the Platform pipe stake in conventional casing area, both flat as auxiliary after steel pile casting anchoring
Platform stake is used as pile steel pile casting again.
With reference to shown in figure 1,2, wherein leading truck is steel pipe and shaped steel combination truss structure, with improve overall structure rigidity and
Intensity.Lateral 7 is welded between leading truck, leading truck includes the cantilever mechanism 6 and guide housing 5 being connected, cantilever mechanism 6 and starting
The steel pile casting 4 that the steel pipe pile foundation 8 or drilling platform 9 of the concrete of platform 2 anchoring have completed anchoring welds, and guide housing 5 is upper and lower
Parallel sandwich construction, the pilot hole 51 that the sinking of a receiving steel pile casting 4 passes through is correspondingly provided with each layer vertically, it is vertical to form one
Guide channel.The corresponding each steel pile casting 4 of the row for being intended to sinking is provided with a leading truck.When carrying out first row 4 sinking of steel pile casting, lead
It need to be welded on to the cantilever mechanism 6 of frame and complete the solid steel pipe pile foundation of starting platform 2 of the embedding rock anchor (steel-pipe pile of concrete anchoring
8) lateral position, leading truck are located at starting platform 2 and (are intended to the steel pile casting of sinking towards the first row steel pile casting side for being intended to sinking on basis
Position 3) form a contilever platform；During forward impelling, the cantilever mechanism 6 of leading truck, which is welded on, has completed anchoring temporarily
On steel pile casting 4 (steel pile casting anchoring concrete need to reach design strength requirement before paying attention to welding), leading truck direction is intended under sinking
One row's steel pile casting side (the steel pile casting position 3 for being intended to sinking) forms a contilever platform.Guide housing 5 divides three layers, every between two layers
Highly it is 2m；The device that correction, adjustment and locking during sinking are positioned, applied for steel pile casting is set in leading truck, had simultaneously
Enough intensity, rigidity, disclosure satisfy that the requirement of sinking steel pile casting when flow velocity is big, wind speed is big, wave is high.
Overall construction technology：
Use waterborne sets up starting platform 2 and connects main trestle 1, the steel pipe pile foundation that starting platform 2 is anchored using concrete
8, then set up drilling platform 9 by starting platform 2.Drilling platform 9 considers that steel pile casting 4 participates in platform entirety stress, no longer sets
Steel pipe pile foundation, due to the region depth of water, flow velocity is fast, coating is weak, it is necessary to carry out impacting after-pouring concrete to steel pile casting
Anchoring temporarily, i.e. starting platform, which are set up, → starting platform anchors → installs leading truck → sinking steel pile casting → impact anchoring steel pile casting
→ platform connection → bored pile construction.
1st, percussive drill in place with steel pile casting anchoring temporarily：
With reference to shown in figure 1,2, after leading truck is accurately positioned by measurement, is installed using crane gear and weld completion.Rise
Steel pile casting 4 is hung in leading truck pilot hole 51 by weight ship, and band slack period enters water, it is ensured that the perpendicularity of decentralization process.Further to increase
Add and hammer depth, crane gear lifting vibration hammer carries out just shaking to steel pile casting 4, avoids the steel pile casting base opening under the conditions of fluctuation tide from sending out
Raw off normal.After the completion of steel pile casting fine adjustment, 4 JK-15 percussive drills are arranged on starting platform 2, are bored using diameter 2.95m
Head relies on leading truck to be punched out operation in steel pile casting 4, steel pile casting 4 is progressively followed up, embedded rock stratum.According to Structure Calculation,
Simultaneously to avoid the base opening spillage of boring procedure casing 4, it is 3m that steel pile casting 4, which enters rock follow-up depth,.To prevent steel pile casting with not entering
Position, after impact terminates, it can be shaken again using vibration hammer, to ensure the depth that follows up.Follow-up meets after requiring, using catheterized reperfusion
C40 pea gravel concretens are to former sea bed elevation location.
2nd, anchorage zone drilling platform is set up：
With reference to shown in figure 3,4 steel pile castings 4 of first row anchor and after concrete strength reaches design strength, and crane ship moves
Walking driller, remove leading truck.To set up drilling platform 9 based on having completed the steel pile casting 4 of anchoring, complete steel pile casting anchorage zone and bore
Hole putting up platform.
Continue, using crane ship lifting circulation welding next row steel pile casting leading truck, to lead in the outside of steel pile casting 4 anchored
Cantilever mechanism 6 is welded on the outside wallboard of steel pile casting 4 to frame, and lateral 7 is welded between leading truck strengthens resistance to overturning.According to
The flow of head row's steel pile casting constructions carries out the sinking of steel pile casting, punching, anchoring, then carry out lateral 7 between steel pile casting connect, leading truck
Remove, drilling platform superstructure is set up.
With reference to shown in figure 4 (arrow is main trestle direction in figure), turnover is reused leading truck and entered according to upper sequence of construction
The sinking of the remaining steel pile casting of row, anchoring, finally complete the construction of whole drilling platform.
Bridge A has the characteristics of oblique rock surface, thin cover layer compared with other cable-stayed bridges in foreign countries.Be not suitable for using
Analysis on Large-scale Group Piles Foundation construction method under domestic and international still some similar hydrology, geological conditions at present.The conventional single sinking work of steel pile casting
Effect about 1~2 day, its single about 7 days steel pile casting used time completes, and the bridge pier, which amounts to, has made 4 sets of leading trucks, 7 circulations altogether
About 50 days cycles completed 26 steel pile casting sinking constructions.And pore forming process none root casing spillage, it effectively ensure that pore-forming is imitated
Rate and pile quality, solves the Analysis on Large-scale Group Piles Foundation construction of complex condition, for the construction accumulation of severe water environment steel pile casting
Invaluable experience, has further promoted the development of Large Span Bridges construction technique.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (3)
- A kind of 1. steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity, it is characterised in that：Including main trestle, The starting platform being connected with main trestle, for the leading truck of the steel pile casting sinking of drilling platform, and vibration hammer and impact drill；Rise Beginning platform is located on the outside of drilling platform, the steel pipe pile foundation anchored using concrete；Leading truck is located at starting platform towards drilling Platform side forms a contilever platform, and leading truck is welded on and has completed the solid starting platform steel pipe pile foundation lateral position of embedding rock anchor Put, or leading truck is located at drilling platform and forms a contilever platform towards the steel pile casting side for being intended to sinking, and leading truck is welded on Outermost has been completed on the outside wallboard of the steel pile casting of anchoring temporarily；Lateral is welded between leading truck, leading truck includes being connected Cantilever mechanism and guide housing, cantilever mechanism and starting platform steel-pipe pile or steel pile casting weld, and guide housing is parallel more up and down Rotating fields, the pilot hole that a receiving steel pile casting sinking passes through is correspondingly provided with each layer vertically, forms a vertical guide channel, Impact drill stays position on leading truck.
- 2. the steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone as claimed in claim 1 flow velocity, its feature exist In：Between each steel pile casting drilling platform is formed by root lateral.
- 3. the steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone as claimed in claim 1 flow velocity, its feature exist In：Guide housing is the cuboid frame of three-decker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720613617.XU CN206859219U (en) | 2017-05-27 | 2017-05-27 | The steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720613617.XU CN206859219U (en) | 2017-05-27 | 2017-05-27 | The steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity |
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| CN206859219U true CN206859219U (en) | 2018-01-09 |
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| CN201720613617.XU Expired - Fee Related CN206859219U (en) | 2017-05-27 | 2017-05-27 | The steel pile casting constructing device of the big oblique rock surface of shallow overburden profundal zone flow velocity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241800A (en) * | 2019-06-14 | 2019-09-17 | 中交二公局第二工程有限公司 | Drilling platform construction method under a kind of disorderly Condition of Supercritical Flow of naked rock of high inclination-angle |
-
2017
- 2017-05-27 CN CN201720613617.XU patent/CN206859219U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110241800A (en) * | 2019-06-14 | 2019-09-17 | 中交二公局第二工程有限公司 | Drilling platform construction method under a kind of disorderly Condition of Supercritical Flow of naked rock of high inclination-angle |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20210527 |