CN107503344A - The construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile - Google Patents
The construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile Download PDFInfo
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- CN107503344A CN107503344A CN201710645035.4A CN201710645035A CN107503344A CN 107503344 A CN107503344 A CN 107503344A CN 201710645035 A CN201710645035 A CN 201710645035A CN 107503344 A CN107503344 A CN 107503344A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/385—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with removal of the outer mould-pipes
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- Mining & Mineral Resources (AREA)
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- General Engineering & Computer Science (AREA)
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- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile, including site localization；Excavation is connected in place with steel pile casting retaining wall；Reinforcement cage skeleton lifts；Concreting and steel pile casting retaining wall lifting；Sound wave transmission method detects pile quality.Strong adaptability of the present invention, safe, energy-conserving and environment-protective, panelling construction speed can be made to improve 20%~30%, the personnel that reduce are detained the time in stake holes, shorten the construction period, reduce construction cost, improve the quality of manually digging hole filling pile.
Description
Technical field
The present invention relates to construction engineering technical field, specifically a kind of turnover type merogenesis steel pile casting retaining wall manually digging hole perfusion
The construction method of stake.
Background technology
Artificial digging pile is using the pile foundation required for manually directly being scraped out in rock foundation, then by armored concrete
Directly pour in the basis formed in stake holes.Heavy mechanical equipment is not needed, effect without squeezing soil, Adjacent Buildings base will not be damaged
Plinth.Artificial digging pile can local physical features, it is with a varied topography under conditions of operation, it is convenient machinery dig stake it is unfavorable in the case of enter
Row rapid construction.
Conventional Design of Artificial Drilled Piles uses annular concrete retaining wall, and working procedure is complicated, pile cycle length, shield
Wall can not be used in turn, and underground operators have larger potential safety hazard.
The content of the invention
It is an object of the invention to for such a situation, using turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile
Construction method, overcome the conventional concrete lagging pile pile cycle it is long the shortcomings that, accelerate construction speed, and steel pile casting retaining wall energy
Collapse hole effectively is avoided, effectively ensures construction safety, meanwhile, steel pile casting retaining wall is reusable, remarkable in economical benefits.
To solve the above problems, the technical solution used in the present invention is：
A kind of construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile, comprises the following steps：
Step 1：Site localization：According to planning and design document, in-site measurement unwrapping wire sets stabilization after determining stake holes position
Survey bidding to know, the construction of stake holes mouth concrete collar tie beam is carried out after repetition measurement is errorless；
Step 2：Excavation is connected in place with steel pile casting retaining wall：Manually successively cut the earth from top to bottom, shoveling order is first middle
Part, periphery being dug afterwards, excavating 1.5m first, after size review, head section steel pile casting retaining walls are hung in into stake holes, steel pile casting shield with crane
Wall is sunk using deadweight, is penetrated on steel pile casting retaining wall with preprepared supporting steel pipe at stake holes mouth and is protected steel in preformed hole
Cylinder-wall is fixed temporarily, is vertically welded to connect after later section lifting positioning in combination is firm, after welding, operation people
To borehole operation in hole, is continued under member, steel pile casting retaining wall sinks with borehole depth, and borehole operation replaces with steel pile casting retaining wall spreading
Carry out, until stake holes bottom absolute altitude, operation process will carry out inspection review according to bidding knowledge is surveyed to stake holes, it is ensured that stake holes plane position
Put, stake holes depth, vertical degree of the peg hole etc. meet corresponding code requirement；
Step 3：Reinforcement cage skeleton lifts：Stake holes is dug to designed elevation, errorless through checking, by loose slag, the debris of bottom hole
It is clean Deng removing, reinforcement cage skeleton is hung in into stake holes；
Step 4：Concreting and steel pile casting retaining wall lifting：The good commerical ready-mixed concrete of premixing is discharged into supravasal funnel
It is interior, first batch of concrete is irrigated into stake holes by conduit, after first batch of concreting, is hung steel pile casting retaining wall with crane
Go out 1 section, penetrated with supporting steel pipe at stake holes mouth and fix steel pile casting retaining wall temporarily in preformed hole on next section steel pile casting retaining wall,
Steel pile casting is cut down outside hole, continues concrete perfusion, filling concrete replaces with the lifting of steel pile casting retaining wall and conduit
Carry out, up to keeping steel pile casting retaining wall bottom to be constantly in below concrete liquid level in pile, whole lifting process, steel pile casting shield
The lifting of wall is slow, and speed is uniform；
First batch of concrete perfusion requirement can meet that buried depth is not less than 1.0m and filling conduit bottom needs to conduit first,
Its concrete quantity
V≥πD2/ 4Hc=π D2/4(h2+h3)
V-first batch of concrete requirement (m3)；
Required stake holes inner concrete face is to the height (m) of bottom hole, Hc=h during the first batch of concrete of Hc-perfusion2+h3；
D-stake holes diameter (m)；
h2The first buried depth (m) of-conduit, h2≥1.0m；
h3- conduit bottom is to stake holes bottom gap (m), 0.4m≤h3≤2m。
More than two sound detecting pipes, passage of the sound detecting pipe as transducer are fixed with step 3, on reinforcement cage skeleton.
Also include step 5：Sound wave transmission method detects pile quality：When cast-in-place pile concrete reaches test request, sound is used
Ripple transmission beam method is checked pile body concrete quality and makes quality evaluation comprehensively.
In step 1, the form of construction work of stake holes mouth concrete collar tie beam is：60cm is manually excavated downwards in stake holes position, is installed
Template, ring beam reinforcing steel bar is installed, after passed examination, carries out concrete cast, a width of 30cm of collar tie beam, collar tie beam internal diameter and stake holes internal diameter one
Cause.
In step 2, the steel pile casting retaining wall diameter is divided into two kinds of 1.4m and 1.2m, is respectively used to 1.4m and 1.2m diameter
The borehole operation of stake, preformed hole is provided with steel pile casting retaining wall close to top end, and the steel pile casting retaining wall can turnaround cycle use.
In step 2, manually digging hole operation often excavates sinking steel pile casting retaining wall after 0.5m, currently using 0.5m as a construction section
When the preformed hole of one section steel pile casting retaining wall is reached at stake holes mouth concrete collar tie beam, with preprepared supporting steel at stake holes mouth
Pipe penetrates on steel pile casting retaining wall and fixes steel pile casting retaining wall temporarily in preformed hole, and the lifting of later section steel pile casting retaining wall is in combination fixed
Vertically it is welded to connect after position is firm, after welding, operating personnel enters stake holes and continues borehole operation, and circulation is carried out, directly
To caisson pile, cut the earth by manually successively being carried out from the top down with pick, shovel, chance firm hard formation hammer, pricker or pneumatics crusher machine,
Shoveling order loads in well-bucket, is transported to after being hung to ground from the assigned position heap beyond well head 2m for first middle rear perimeter edge, spoir
Put, and walk clearly in time.
In step 2, steel pile casting retaining wall spreading is carried out in stake holes mouth, and axle center, upper and lower section steel pile casting retaining wall are first aligned before welding
Longitudinal seam staggers 90 °, and welding uses common welding rod arc welding, and one side full weld, layering welding, wlding is from high efficiency, high intensity
Chrome-nickel wlding.
In step 4, before concrete perfusion, check stake holes and the indices parameter of steel reinforcement cage, conduit occupy stake holes
Center, axis is straight, and conduit bottom termination is apart from stake holes bottom 40cm.
In step 4, stake bottom 6-7m concreting speed suitably slows down, and is shaken in the range of stake top 4m with poker vibrator
Smash, perfusion nearly at the end of, that checks concrete pours into quantity, with determine survey concrete influx height it is whether correct,
The height of pile top of perfusion is higher by 0.5m than design.
In step 4, after first batch of concreting, concrete needs continuous placing, it is impossible to interrupting or stopping.
The preparation method of the steel pile casting retaining wall is as follows：
1)：From welding material：Steel pile casting retaining wall presses 1.5m full-length chi using thick δ=8mm Q235A levels steel plate
It is very little to roll welding and form, from following welding material：Welding wire ER50-6, SJ101 solder flux, J507 welding rods, ensure weld joint mechanical
Mother metal mechanical performance can be not less than；
2)：Roll out：Sheet material used all rolls out；
3)：Examine steel plain degree：1mm cannot be greater than using the long leveling ruler detections of 1m, flatness after rolling out；
4)：Cutting：Q235A levels steel plate carries out accurate cutting using plate shearing machine；
5)：Steel pile casting rolls：The steel that the steel plate of well cutting is rolled into a diameter of design size respectively using veneer reeling machine protects
Cylinder-wall, and carry out tack weld and fix；
6)：Welding：With AC welding set, J507 welding rods, using one side full weld, longitudinal joint is filled up in layering welding；
7)：Justify in school：The steel pile casting retaining wall being soldered is tested, ovality carries out school circle more than 30mm's.
It is using beneficial effect caused by above-mentioned technical proposal：
1st, strong adaptability：Using turnover type merogenesis steel pile casting retaining wall, can solve in narrow space, construction operation height by
Limit, filling pile construction large scale equipment can not be in place in the case of operations, the flexible and efficient excavation work for completing bored concrete pile.
2nd, it is safe：Installation form, concrete in original design reinforced concrete core-tube operation form what intensity needed
Time is longer, it is impossible to which continuous construction, hole time length of drying in the air, surrounding environment form potential safety hazard to caisson.Using turnover type merogenesis
Steel pile casting retaining wall, it can work continuously, speed of application is fast, and the pore-forming time is short, and surrounding environment influences smaller, security to caisson
It is high.
3rd, energy-conserving and environment-protective：The use of reinforcing bar, concrete is reduced, steel pile casting retaining wall can be used in turn, more energy-conserving and environment-protective, section
About resource, reduce consumption.
4th, social benefit is improved：Using turnover type merogenesis steel pile casting retaining wall, the duration is reduced, Early Opening to Traffic, greatly
Reduce municipal engineering construction activity to urban transportation and the adverse effect of social life.
5th, application and popularization value：Assuming that annual build together in the whole nation sets the reinforced concrete structure bridge that bridge is about a myriametre,
In the case that execution conditions do not allow, 10%~15% bridge is constructed using turnover type merogenesis steel pile casting retaining wall manually digging hole,
15,000,000 yuan can be saved, there is good realistic meaning, in industry can progressively be applicable.
Generally speaking, the present invention can make panelling construction speed improve 20%~30%, when reducing in personnel's delay stake holes
Between, shorten the construction period, reduce construction cost, improve the quality of manually digging hole filling pile.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1：The turnover type merogenesis steel pile casting retaining wall that the present invention is illustrated by taking a diameter of 1.4m stake as an example is artificial
The construction method of digging hole filling pile, steel pile casting retaining wall use thick δ=8mm, and Q235A level steel plates, which roll, to be formed, by 1.5m standard
Length dimension is processed, and preformed hole, steel pile casting retaining wall are provided with (at the 5-10cm of top) close to top end on steel pile casting retaining wall
Can turnaround cycle use.
A kind of construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile, comprises the following steps：
Step 1：Site localization：According to planning and design document, in-site measurement unwrapping wire sets stabilization after determining stake holes position
Bidding to be surveyed to know, the construction of progress stake holes mouth concrete collar tie beam, the Specific construction mode of stake holes mouth concrete collar tie beam are after repetition measurement is errorless,
Manually excavate 60cm downwards in stake holes position, supporting module installs ring beam reinforcing steel bar, after passed examination, carries out the anti-water coagulations of C30
Soil cast, a width of 30cm of collar tie beam, collar tie beam internal diameter consistent with stake holes internal diameter is 1.4m, and collar tie beam external diameter is 2m.Its effect is spud pile
Position, isolate surface water, temporary support steel pile casting retaining wall, prevent that stake holes mouth from caving in and native stone debris etc. falls into stake holes.It is to be cast mixed
After solidifying soil reaches design strength, step 2 can be carried out.
Step 2：Excavation is connected in place with steel pile casting retaining wall：Manually successively cut the earth from top to bottom, shoveling order is first middle
Part, periphery being dug afterwards, excavating 1.5m first, after size review, head section steel pile casting retaining walls are hung in into stake holes, steel pile casting shield with crane
Wall is sunk using deadweight, is penetrated at stake holes mouth with a diameter of 15cm of preprepared supporting steel pipe on steel pile casting retaining wall in advance
Box out it is middle steel pile casting retaining wall is fixed temporarily, be vertically welded to connect after later section lifting positioning in combination is firm, steel shield
Cylinder-wall spreading is carried out in stake holes mouth, and axle center is first aligned before welding, and adjacent upper and lower section steel pile casting retaining wall longitudinal seam staggers 90 °, welded
Connect and use common welding rod arc welding, one side full weld, layering welding, wlding is from high efficiency, the chrome-nickel wlding of high intensity, tool
Have fabulous plasticity, toughness, crack resistance, there is good welding technological properties, arc stability, easily de- slag, splash less, weld seam it is equal
It is even attractive in appearance, after welding, in hole under operating personnel, continue borehole operation, manually digging hole operation using 0.5m as a construction section,
Often sinking steel pile casting retaining wall after excavation 0.5m, when the preformed hole of previous section steel pile casting retaining wall is reached at stake holes mouth concrete collar tie beam
When, penetrated on steel pile casting retaining wall with preprepared supporting steel pipe at stake holes mouth and consolidate steel pile casting retaining wall temporarily in preformed hole
It is fixed, vertically it is welded to connect after later section steel pile casting retaining wall lifting positioning in combination is firm, borehole operation is protected with steel pile casting
Alternately, until stake holes bottom absolute altitude, operation process will carry out inspection review to wall spreading according to bidding knowledge is surveyed to stake holes, it is ensured that stake
Hole plan-position, stake holes depth, vertical degree of the peg hole etc. meet corresponding code requirement.Cut the earth by manually from the top down successively with pick,
Shovel is carried out, chance firm hard formation hammer, pricker or pneumatics crusher machine, and shoveling order loads in well-bucket, hung for first middle rear perimeter edge, spoir
It is transported to after to ground and is stacked from the assigned position beyond well head 2m, and walks clearly in time.
Step 3：Reinforcement cage skeleton lifts：Stake holes is dug to designed elevation, errorless through checking, by loose slag, the debris of bottom hole
It is clean Deng removing, reinforcement cage skeleton is hung in into stake holes, when hanging reinforcement cage skeleton and entering stake holes, steel reinforcement cage wants vertical drop, speed
It is uniform, avoid hitting hole wall.After steel reinforcement cage falls on designed elevation, by its cent(e)ring in pile center position and fixation.
Step 4：Concreting and steel pile casting retaining wall lifting：It is multiple in order to ensure construction quality before concrete perfusion
The indices parameter of core stake holes and steel reinforcement cage, conduit occupy stake holes center, and axis is straight, prevents card from hanging framework of steel reinforcement and collision
The good commerical ready-mixed concrete of premixing is discharged into supravasal funnel, passed through by hole wall, conduit bottom termination apart from stake holes bottom 40cm
Conduit irrigates first batch of concrete into stake holes.
First batch of concrete perfusion requirement can meet that buried depth is not less than 1.0m and filling conduit bottom needs to conduit first,
Its concrete quantity
V≥πD2/ 4Hc=π D2/4(h2+h3)
V-first batch of concrete requirement (m3)；
Required stake holes inner concrete face is to the height (m) of bottom hole, Hc=h during the first batch of concrete of Hc-perfusion2+h3；
D-stake holes diameter (m), D=1.4；
h2The first buried depth (m) of-conduit, h2≥1.0；
h3- conduit bottom is to stake holes bottom gap (m), 0.4m≤h3≤2m。
Wherein h2Take 1.2, h3Take 0.4.Now first batch of concrete perfusion amount
V≥πD2/ 4Hc=π D2/4(h2+h3)=π × 1.42/ 4 × (1.2+0.4)=2.463m3
After first batch of concrete pours into bottom hole, probing hole inner concrete face height, calculates conduit buried depth immediately, such as accords with
Close and require, you can be normally carried out pile concrete perfusion.Steel pile casting retaining wall is hung out into 1 section with crane, with support at stake holes mouth
Steel pipe penetrates on next section steel pile casting retaining wall and fixes steel pile casting retaining wall temporarily in preformed hole, cuts steel pile casting retaining wall outside hole
Get off, continue concrete perfusion, concrete needs continuous placing, it is impossible to interrupting or stopping, filling concrete and steel pile casting retaining wall and
Alternately, until pile, the lifting of steel pile casting retaining wall is slow, and speed is uniform, in steel pile casting retaining wall for the lifting of conduit
Filling concrete height, not only consider conduit and steel pile casting by the height of lifting, it is also contemplated that caused by lifting steel pile casting retaining wall
The reduction of concrete surface, to ensure that the buried depth of conduit and steel pile casting retaining wall bottom are consistently lower than concrete surface.To prevent steel
Tendons skeleton floats, and stake bottom 6-7m concreting speed suitably slows down, to ensure quality, shaken in the range of stake top 4m with plug-in type
Device is smash to vibrate, perfusion nearly at the end of, that checks concrete pours into quantity, with determine survey concrete influx height whether
Correctly, the height of pile top of perfusion is higher by 0.5m than design, and to ensure concrete strength, redundance must be cut, and pile crown is without pine
Dissipate layer.
The preparation method of the steel pile casting retaining wall is as follows：
1)：From welding material：Steel pile casting retaining wall presses 1.5m full-length chi using thick δ=8mm Q235A levels steel plate
It is very little to roll welding and form, from following welding material：Welding wire ER50-6, SJ101 solder flux, J507 welding rods, ensure weld joint mechanical
Mother metal mechanical performance can be not less than；
2)：Roll out：Sheet material used all rolls out；
3)：Examine steel plain degree：1mm cannot be greater than using the long leveling ruler detections of 1m, flatness after rolling out；
4)：Cutting：Q235A levels steel plate carries out accurate cutting using plate shearing machine；
5)：Steel pile casting rolls：The steel that the steel plate of well cutting is rolled into a diameter of design size respectively using veneer reeling machine protects
Cylinder-wall, and carry out tack weld and fix；
6)：Welding：With AC welding set, J507 welding rods, using one side full weld, longitudinal joint is filled up in layering welding；
7)：Justify in school：The steel pile casting retaining wall being soldered is tested, ovality carries out school circle more than 30mm's.
Embodiment 2：
Difference with embodiment 1 is：More than two sound detecting pipes are fixed with step 3, on reinforcement cage skeleton, sound detecting pipe is made
For the passage of transducer.Sounding pipe joint and sealed bottom are good, and top is closed with stopper, prevent mortar, and debris blocks pipeline, connect
The processing of mouth position reaches concrete perfusion and accordingly seals pouring.
Step 5 is carried out after step 4 is completed：Sound wave transmission method detects pile quality：Cast-in-place pile concrete reaches test will
When asking (strength indexes of concrete, live water power, atmospheric temperature, humidity, vibrations noise meet test request), acoustic wave transmission is used
Method is checked pile body concrete quality and makes quality evaluation comprehensively.Its journey is detected for pile body integrity defect
Degree, scope, position (such as cavity, honeycomb, necking down), can same construction unit, supervisor, survey ＆ design units determine jointly
Handling suggestion, form minutes.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modifications and embodiment, and these modifications and embodiment will fall in this Shen
Please be within disclosed spirit and spirit.More specifically, can be to master in the range of disclosure and claim
The building block and/or layout for inscribing composite configuration carry out a variety of variations and modifications.Except what is carried out to building block and/or layout
Outside modification and improvement, to those skilled in the art, other purposes also will be apparent.
Claims (10)
- A kind of 1. construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile, it is characterised in that：Including following step Suddenly：Step 1：Site localization：According to planning and design document, in-site measurement unwrapping wire sets stable survey to set after determining stake holes position Mark, the construction of stake holes mouth concrete collar tie beam is carried out after repetition measurement is errorless；Step 2：Excavation is connected in place with steel pile casting retaining wall：Manually successively to cut the earth from top to bottom, shoveling order is first center section, After dig periphery, excavate 1.5m first, after size review, head section steel pile casting retaining walls hung in into stake holes, steel pile casting retaining wall profit with crane Sunk with deadweight, penetrated on steel pile casting retaining wall with preprepared supporting steel pipe at stake holes mouth and protect steel pile casting in preformed hole Wall is fixed temporarily, is vertically welded to connect after later section lifting positioning in combination is firm, after welding, under operating personnel Into hole, continue borehole operation, steel pile casting retaining wall with borehole depth sink, borehole operation replace with steel pile casting retaining wall spreading into OK, until stake holes bottom absolute altitude, operation process will carry out inspection review according to bidding knowledge is surveyed to stake holes, it is ensured that stake holes plan-position, Stake holes depth, vertical degree of the peg hole etc. meet corresponding code requirement；Step 3：Reinforcement cage skeleton lifts：Stake holes is dug to designed elevation, errorless through checking, and the loose slag of bottom hole, debris etc. is clear Except clean, reinforcement cage skeleton is hung in into stake holes；Step 4：Concreting and steel pile casting retaining wall lifting：The good commerical ready-mixed concrete of premixing is discharged into supravasal funnel, First batch of concrete is irrigated into stake holes by conduit, after first batch of concreting, steel pile casting retaining wall is hung out 1 with crane Section, penetrated with supporting steel pipe at stake holes mouth and fix steel pile casting retaining wall temporarily in preformed hole on next section steel pile casting retaining wall, Steel pile casting retaining wall is cut down outside hole, continues concrete perfusion, the lifting of filling concrete and steel pile casting retaining wall and conduit is handed over For progress, up to keeping steel pile casting retaining wall bottom to be constantly in below concrete liquid level in pile, whole lifting process, steel pile casting The lifting of retaining wall is slow, and speed is uniform；First batch of concrete perfusion requirement can meet conduit, and for buried depth not less than 1.0m and filling conduit bottom needs, it is mixed first Coagulate native quantityV≥πD2/ 4Hc=π D2/4(h2+h3)V-first batch of concrete requirement (m3)；Required stake holes inner concrete face is to the height (m) of bottom hole, Hc=h during the first batch of concrete of Hc-perfusion2+h3；D-stake holes diameter (m)；h2The first buried depth (m) of-conduit, h2≥1.0m；h3- conduit bottom is to stake holes bottom gap (m), 0.4m≤h3≤2m。
- 2. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：The preparation method of the steel pile casting retaining wall is as follows：1)：From welding material：Steel pile casting retaining wall presses 1.5m standard knot length dimension using thick δ=8mm Q235A levels steel plate Roll welding to form, from following welding material：Welding wire ER50-6, SJ101 solder flux, J507 welding rods, ensure weld joint mechanical performance Not less than mother metal mechanical performance；2)：Roll out：Sheet material used all rolls out；3)：Examine steel plain degree：1mm cannot be greater than using the long leveling ruler detections of 1m, flatness after rolling out；4)：Cutting：Q235A levels steel plate carries out accurate cutting using plate shearing machine；5)：Steel pile casting rolls：The steel pile casting that the steel plate of well cutting is rolled into a diameter of design size respectively using veneer reeling machine protects Wall, and carry out tack weld and fix；6)：Welding：With AC welding set, J507 welding rods, using one side full weld, longitudinal joint is filled up in layering welding；7)：Justify in school：The steel pile casting retaining wall being soldered is tested, ovality carries out school circle more than 30mm's.
- 3. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：More than two sound detecting pipes, passage of the sound detecting pipe as transducer are fixed with step 3, on reinforcement cage skeleton.
- 4. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 3, its feature It is：Also include step 5：Sound wave transmission method detects pile quality：It is saturating using sound wave when cast-in-place pile concrete reaches test request Method is penetrated to check pile body concrete quality comprehensively and make quality evaluation.
- 5. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：In step 1, the form of construction work of stake holes mouth concrete collar tie beam is：60cm is manually excavated downwards in stake holes position, installs mould Plate, ring beam reinforcing steel bar is installed, after passed examination, carries out concrete cast, a width of 30cm of collar tie beam, collar tie beam internal diameter and stake holes internal diameter one Cause.
- 6. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：In step 2, the steel pile casting retaining wall diameter is divided into two kinds of 1.4m and 1.2m, is respectively used to 1.4m and 1.2m diameter stake Borehole operation, be provided with preformed hole close to top end on steel pile casting retaining wall, the steel pile casting retaining wall can turnaround cycle use.
- 7. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：In step 2, manually digging hole operation often excavates sinking steel pile casting retaining wall after 0.5m, when previous section using 0.5m as a construction section When the preformed hole of steel pile casting retaining wall is reached at stake holes mouth concrete collar tie beam, worn at stake holes mouth with preprepared supporting steel pipe Enter and fix steel pile casting retaining wall temporarily in preformed hole on steel pile casting retaining wall, later section steel pile casting retaining wall lifting positioning in combination is steady Gu vertically it is welded to connect after, after welding, operating personnel enters stake holes and continues borehole operation, and circulation is carried out, until digging Hole stake pile, cut the earth by manually successively being carried out from the top down with pick, shovel, meet firm hard formation hammer, pricker or pneumatics crusher machine, cut the earth Order loads in well-bucket for first middle rear perimeter edge, spoir, is transported to after being hung to ground from the assigned position stacking beyond well head 2m, and Walk clearly in time.
- 8. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：In step 2, steel pile casting retaining wall spreading is carried out in stake holes mouth, and axle center is first aligned before welding, and upper and lower section steel pile casting retaining wall is indulged Weld seam staggers 90 °, and welding use common welding rod arc welding, one side full weld, layering welding, and wlding selects high efficiency, high intensity Chrome-nickel wlding.
- 9. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：In step 4, before concrete perfusion, check stake holes and the indices parameter of steel reinforcement cage, conduit are occupy in stake holes Centre, axis is straight, and conduit bottom termination is apart from stake holes bottom 40cm.
- 10. the construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile according to claim 1, its feature It is：In step 4, stake bottom 6-7m concreting speed suitably slows down, and is vibrated in the range of stake top 4m with poker vibrator, Perfusion nearly at the end of, that checks concrete pours into quantity, with determine institute survey concrete influx height it is whether correct, irrigate Height of pile top be higher by 0.5m than design；After first batch of concreting, concrete needs continuous placing, it is impossible to interrupting or stopping.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710645035.4A CN107503344A (en) | 2017-08-01 | 2017-08-01 | The construction method of turnover type merogenesis steel pile casting retaining wall manually digging hole filling pile |
Applications Claiming Priority (1)
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| CN111576395A (en) * | 2020-05-09 | 2020-08-25 | 中铁二十局集团第三工程有限公司 | Construction method of drilled pile |
| CN111622214A (en) * | 2020-06-05 | 2020-09-04 | 宁波市鄞州建筑有限公司 | Novel house building pile foundation structure and construction method thereof |
| CN113089653A (en) * | 2021-04-07 | 2021-07-09 | 四川省交通建设集团股份有限公司 | Multi-casing construction method for cast-in-place pile foundation |
| CN113309080A (en) * | 2021-04-19 | 2021-08-27 | 中铁十九局集团第三工程有限公司 | Construction method of double-casing cast-in-situ bored pile |
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Application publication date: 20171222 |