CN108130904A - A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway - Google Patents
A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway Download PDFInfo
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- CN108130904A CN108130904A CN201711417635.1A CN201711417635A CN108130904A CN 108130904 A CN108130904 A CN 108130904A CN 201711417635 A CN201711417635 A CN 201711417635A CN 108130904 A CN108130904 A CN 108130904A
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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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Abstract
The present invention relates to a kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway, including levelling of the land, measuring stake position；Place base board, multiple line positioning；Drill machine with casing is in place；Soil taking hole forming；Rotary drilling rig is in place；Drilling process；Hole Slag treatment；Borehole cleaning；Dispose steel reinforcement cage；Casing is put into, welds；Concrete perfusion.The beneficial effects of the invention are as follows：The present invention combines construction using casing convolution drilling machine and rotary drilling rig, not only have the characteristics that construction quality is good, pore-forming is reliable accurately, construction efficiency is high, also adapt to the construction of various complicated firm hard formations, and energy saving and resource, environmental pollution is small, while adapts to the stratum such as water level is higher, cobble is larger, crawler body carrying, ground pressure is small, high degree of automation.This invention provides both a kind of stability is good, construction method of strong environmental adaptability, and has saved cost, there is good promotional value and application prospect.
Description
Technical field
The present invention relates to a kind of construction field of the composite bushing drill-pouring pilework of neighbouring existing subway, specifically
It is a kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway.
Background technology
With the continuous propulsion sharply increased with Development of China's Urbanization of population, vehicle, subway with its is energy saving, efficient, comfortable,
The advantages such as occupy little space have risen upsurge in construction in each big and medium-sized cities in China.Meanwhile city intersection is three-dimensional, comprehensive with it
Leap mode, take up an area the advantages that few and spread all over each city in China, and it is grade separation line to have more and more Reconstruction of City Road
Road.The neighbouring construction operating mode of subway tunnel and municipal bridge pier becomes more common, therefore must take into consideration its phase for stake-tunnel construction
Mutually influence problem.Bored concrete pile system refers in engineering site through means such as machine drilling, steel pipe soil compaction or manpower excavations in ground
It forms stake holes in soil, and places in it steel reinforcement cage, concrete perfusion and the stake made.According to forming hole method difference, bored concrete pile
Several classes such as driven cast-in-place pile, cast-in-situ bored pile and digging hole filling pile can be divided into again.At present, the conventional mechanical of bored pile construction
Equipment is rotary drilling rig, GPS drilling machines.But above equipment low construction efficiency needs mud off to prevent collapse hole in pore forming process, and
There are mud emission pollution problems；Pile body verticality is only 1/150, and construction noise is big, additionally, there may be easy collapse hole, reaming, contracting
The techniques disadvantages such as neck, bottom hole residue thickness.Therefore, under the premise of economy is rational, a kind of neither influence rail traffic is found
Normal operation, but the technical scheme that can meet urban road construction seems extremely important.
Invention content
The purpose of the present invention is overcoming deficiency of the prior art, a kind of composite bushing drilling of neighbouring existing subway is provided
The construction method of filling pile structure.The purpose of the present invention is what is be achieved through the following technical solutions：
The construction method of the composite bushing drill-pouring pilework of this neighbouring existing subway, includes the following steps：
1) levelling of the land, measuring stake position：Live mound, smooth location are removed after marching into the arena；Pile center's point coordinates is calculated, is used
Total powerstation carries out setting-out on the spot according to ground polygon control survey point, and protects stake position central point；
2) pile foundation construction
2.1) base board, multiple line positioning are placed：After measuring pile center, by the central point periphery digging machine for the stake that measuring goes out
Foundation pit is dug out, then base board is embedding wherein, the center of base board and the center of stake is allowed to overlap；
2.2) drill machine with casing is in place
Into hole sleeve, before use, first checking for and correcting the verticality of single-unit steel sleeve, perpendicularity deviation is generally 1/
500~1/300, then check the verticality of the overall length steel sleeve by the long configuration of stake, and to each section steel sleeve number, carry out mark
Note, it is sequentially assembled；Steel bushing bottom of the tube inlaying saw flute profile titanium alloy cutter head；
Fixing steel plate is placed and is fixed by label；Loop wheel machine lifting casing convolution drilling machine is carried out in place, in place with fixing steel plate
Cross searching on turntable is set up using reinforcing bar afterwards, and whether identical square with fixing steel plate cross searching with plummet observation center of turntable
It can construct, if misfitting, then repeat the above steps, until center coincide；The level of equipment is adjusted after the completion of in place
Degree, and observe and control the verticality of steel sleeve to be allowed to not less than pile foundation construction requirement；
2.3) soil taking hole forming
First segment steel sleeve is lifted in stake machine jaw, steel sleeve of the bottom equipped with cutting tooth is utilized folder by the centering stake heart
Tight cylinder control wedge-shaped clamping device clamps, and pulling out cylinder control using pressure pushes steel sleeve, and compression distance is about 2.5~3.5m, then
It is fetched earth out of casing with punching grab bucket, continues to push steel sleeve while soil is grabbed, remain that steel sleeve base opening is ahead of excavation
The depth in face is not less than 2.5m；First segment steel sleeve all in press-in soil after, detect verticality, as unqualified, carry out correction tune
Whole, the second section of installation steel sleeve, which continues to push, if qualified fetches earth, and so continues, constructs and grab native operation to pause during scar, really
Recognize scar, continue rock drilling operation to depth is required with the rock equipment Spiral digging machine that is nested after confirmation, confirm supporting course, clean out hole
Bottom sediment；
2.4) rotary drilling rig is in place：Rotary drilling rig items preparation is checked before rotary drilling rig is in place, churning driven
Then pedestal and top after machine installation should steadily, after having checked center in place start to drill；
2.5) in drilling process：It whether vertical observes drilling rod, and passes through depth calculator controlling depth, when churning driven machine drill
For head when rotating clockwise drill bit, the back alignment of bottom plate cutting plate and cylinder turnover panel, drilling cuttings enters cylinder, fill it is a pipeful of after, bore
Head rotation counterclockwise, after bottom plate is positioned by locating piece and shut bottom opening, carries body drill bit and unloads soil to ground；Pass through drilling bucket
It rotates, cuts soil, carry body, unload native and mud support steel sleeve casing wall, iterative cycles pore-forming；
2.6) hole Slag treatment：The hole slag excavator entrucking that rotary digging drilling hole is taken out of in drilling process, dump truck transport to
Place is accumulated, is bulldozed after transporting accumulation place to loading machine；
2.7) borehole cleaning：After drilling reaches requirement depth, inspection hole is carried out with inspection hole device；Aperture, hole perpendicularity, hole depth inspection are closed
Bottom hole cleaning can be carried out after lattice；After borehole cleaning, bottom hole sink quarrel thickness be not greater than 200mm；
2.8) steel reinforcement cage is disposed：Steel reinforcement cage is processed into the cage of two kinds of forms；Pore-forming carries out placement steel after the assay was approved
Muscle cage works, and after steel reinforcement cage shapes, in crane large arm job area, hangs in place in stake holes；
2.9) casing is put into, welds：After treating reinforcing bar cage hoisting, it is put into concrete perfusion conduit；Casing welding uses
Carbon-dioxide arc welding；
2.10) concrete perfusion：Concrete uses C25 underwater concretes；Catheter perfusion continuous pouring is utilized in construction, in
The disconnected time must not exceed 30 minutes, and conduit must not collide steel reinforcement cage when being promoted；Retaining sleeve is straight, casing 2~6m of buried depth, perfusion
Shi Caiyong underwater gliders method is constructed.
In the step 2.3), if soil property is harder clay, head is not high, then the compression distance of steel sleeve can be reduced；
If soil property can deepen for soft plastic clay or the high stream plastic clay of head, the compression distance of steel sleeve.
In the step 2.3), when there is crevice water at whole hole metapore bottom, with the distinctive ancillary equipment water of cased bore-bole bored concrete pile
Undershoot, which is grabbed, to be carried out cleaning eye bottom sediment or is taken with gas to return round-robin method；If after borehole cleaning actual apertures bottom absolute altitude with survey suggestion base absolute altitude base
Originally it is consistent, then no longer carries out pricker spy；If actual apertures bottom absolute altitude with survey suggestion base absolute altitude and be not consistent when, make pricker spy processing.
In the step 2.4), rotary drilling rig is crept at a slow speed in steel bushing bottom low pressure, is drilled under steel bushing after 1.0m
Start normal drilling, be drilled into 3m under steel bushing and crept into using high speed.
In the step 2.5), the mud balance of check borehole mud, viscosity during rotary drilling rig is crept into, containing sand
Rate, colloidity etc..
The beneficial effects of the invention are as follows：The present invention combines construction using casing convolution drilling machine and rotary drilling rig, not only has
The features such as construction quality is good, pore-forming is reliable accurate, construction efficiency is high, moreover it is possible to adapt to the construction of various complicated firm hard formations, and save
The about energy and resource, environmental pollution is small, while adapts to the stratum such as water level is higher, cobble is larger, crawler body carrying, earth contact pressure
Power is small, high degree of automation.This invention provides both a kind of stability is good, construction method of strong environmental adaptability, and saves
Cost has good promotional value and application prospect.
Description of the drawings
Fig. 1 is construction process frame diagram.
Fig. 2 is construction process schematic diagram.
Fig. 3 is 23#, 24# pier pile foundation steel sleeve structural map.
Fig. 4 is process principle figure.
Fig. 5 is 23#, 24# pier plan-position figure.
Reference sign：1 is No. 1 pile foundation；2 be No. 2 pile foundations；3 be No. 3 pile foundations；4 be No. 4 pile foundations；5 be No. 5 pile foundations；6
For No. 6 pile foundations；7 be No. 7 pile foundations；8 be No. 8 pile foundations；9 be No. 9 pile foundations；10 be No. 10 pile foundations；11 be No. 11 pile foundations；12 be No. 12
Pile foundation；13 be subway；14 be casing convolution drilling machine；15 be ground elevation；16 be the soil body to be excavated；17 be stake bottom absolute altitude；18 are
Punching grab bucket；19 be block stamp；20 be large volume rock；21 be rotary drilling rig；22 be clamping cylinder；23 be steel sleeve；24 be wedge grip
Tight device；25 pull out cylinder for pressure；26 be cutting tooth.
Specific embodiment
The present invention is described further with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can to the present invention some improvement and modification can also be carried out, these improvement and modification also fall into the protection domain of the claims in the present invention
It is interior.
As shown in Figure 3,4, the composite bushing drill-pouring pilework of the neighbouring existing subway, using casing convolution drilling machine
The method of 14 constructions, it is ensured that certain length uses steel sleeve 23 below cushion cap, lifts first segment steel sleeve 23 in stake machine jaw,
Steel sleeve 23 of the bottom equipped with special cutting tooth 26 is controlled wedge-shaped clamping device 24 to clamp by the centering stake heart using clamping cylinder 22,
The control of cylinder 25 is pulled out using pressure and pushes steel sleeve 23, and compression distance is about 2.5~3.5m, is taken in steel sleeve 23 using punching grab bucket 18
Soil ensure that the stability of hole wall, avoid causing adjacent subway tunnel excessive influence.Treat that steel sleeve 23 sinks down into certain depth
Afterwards, steel sleeve is constructed below 23 using common rotary drilling rig 21.
By taking Hangzhou is adjacent to the standby pool road improvement project construction of existing subway as an example, as shown in figure 5, main line overpass the 7th
23#, 24# pier are located at subway Line 1 both sides, the nearest pile foundations shield tunnel outer wall about 13.22m of 23# piers, and 24# piers are nearest
Pile foundations shield tunnel outer wall about 12.43m.Subway Line 1 main track buried depth about 24.5m below circuit, the disengaging of subway Line 1
Line buried depth about 7.2~9.8m (be subject to Shanghai-Hangzhou-Ningbo expressway slope leg wire of slope ground).7th substructure for 23# piers,
24# piers, cushion cap are C3 types, cushion cap length, width and height：16.5m×12m×3.5m.23# piers pile foundation 12, stake diameter 1.8m, stake are long
67.3m；24# piers pile foundation 12, stake diameter 1.8m, the long 67.9m of stake.Steel sleeve 23 uses Q345 steel, per root long 44m, outer diameter 2m,
Wall thickness 3cm, using the construction method of casing convolution drilling machine 14, it is ensured that 35m has long steel sleeve 23 below cushion cap.
Using 2 MT type Bei Nuote drilling machines to 23# piers, 24# piers pile foundation from 13 both sides of subway from nearby to far from subway 13
Place simultaneously, symmetrically spuds in, and rate of penetration is controlled in drilling process, it is ensured that 23 masks of steel sleeve are ahead of excavation face.
23# pier sequences of construction are：9→11→5→10→12→6→8→1→3→2→7→4.
24# pier sequences of construction are：4→2→8→3→1→7→5→12→10→11→6→9.
Wherein adjacent to 11, No. 12 pile foundations 12 of pile foundation of pile foundation 10,11 of No. 9 pile foundations 9,10 of the 23# piers of 13 side of subway
Composite bushing cast-in-situ bored pile structure construction is used with 3, No. 4 pile foundations 4 of the pile foundation of pile foundation 2,3 of No. 1 pile foundation 1,2 of 24# piers,
Remaining pile foundation is using conventional rotary digging method construction.
As shown in Figure 1, 2, the construction procedure of the composite bushing drill-pouring pilework of neighbouring existing subway is：1. drilling machine is accurate
Position is bored in standby and centering；2. casing revolution cutting drilling；3. grab bucket is fetched earth；4. subsequent casings connect；5. the punching of large volume rock 20
Hammer 19 or explosion, with grab bucket crawl after crushing；6. whole hole borehole cleaning；7. hang spacer bar cage；8. it is inserted into conduit；9. pour coagulation
Soil.
The construction method of the composite bushing drill-pouring pilework of the neighbouring existing subway, specifically includes following steps：
1) levelling of the land, measuring stake position
1.1) engineering ground has to disclosure satisfy that the pressure-bearing of a pore-forming equipment and walking requirement.Scene soil is removed after marching into the arena
Heap, smooth location.(flat field absolute altitude should be to reinforcing bar cage top, in order to avoid damage finished product reinforcing bar)
1.2) measuring stake position：Pile center's point coordinates is calculated according to the coordinate that design drawing provides, using total powerstation base area
Face polygon control survey point carries out setting-out on the spot, and protects stake position central point.
2) pile foundation construction
2.1) base board, multiple line positioning are placed
Base board (also known as guide table) long 4.5m, wide 4.5m, high 30cm, there are one lifting lug, main materials for four corner sides
It is welded with the steel plate of 2cm thickness, its major function is：
2.1.1) the effect that fixed point is oriented to.After measuring pile center, the central point periphery for the stake that measuring goes out is dug with digging machine
Go out the foundation pit of deep 30cm or so, then base board is embedding wherein, the center of base board and the center of stake is allowed to overlap, ensures that pile foundation is applied
Working hour casing will not sideslip.
2.1.2 the intensity of roadbed) is improved.Base board surfacing is the spy of mechanical execution needed for all kinds of pile foundation constructions
Different operating platform, it has certain thickness, is unlikely to deform, and because itself area is big, after being contacted with ground, after being equivalent to hardening
Ground has certain bearing capacity.Both concrete needed for saving hardening, also solves the problems, such as the carrying of ground.
2.2) drill machine with casing is in place
Casing uses the steel sleeve 23 of 2000 outer diameters of Φ, into hole sleeve before use, 23 verticality of steel sleeve should be carried out
It checks and corrects.The verticality of single-unit steel sleeve 23 is first checked for and corrects, perpendicularity deviation is generally 1/500~1/300, so
The verticality of the overall length steel sleeve 23 by the long configuration of stake is checked afterwards, and each section steel sleeve 23 is numbered, and is marked, is sequentially spelled
Dress；Inlay sawtooth pattern titanium alloy cutter head in 23 bottom of steel sleeve.
Fixing steel plate is placed and is fixed by label.Loop wheel machine lifting casing convolution drilling machine 14 is carried out in place, just with fixing steel plate
Cross searching on turntable is set up, and whether coincide with fixing steel plate cross searching with plummet observation center of turntable using reinforcing bar behind position
It can construct, if misfitting, then repeat the above steps, until center coincide.The water of equipment is adjusted after the completion of in place
Pingdu, and observe and control the verticality of steel sleeve 23 to be allowed to not less than pile foundation construction requirement at any time.
2.3) soil taking hole forming
First segment steel sleeve 23 is lifted in stake machine jaw, the centering stake heart, by steel bushing of the bottom equipped with special cutting tooth 26
Pipe 23 controls wedge-shaped clamping device 24 to clamp using clamping cylinder 22, and pulling out the control of cylinder 25 using pressure pushes steel sleeve 23, compression distance
Then about 2.5~3.5m is fetched earth with punching grab bucket 18 out of casing, on one side grab soil, while continue to push steel sleeve 23, protect always
It holds 23 base opening of steel sleeve and is ahead of the depth of excavation face not less than 2.5m, compression distance is depending on specific soil property, if harder
Clay, head is not high, then pressure pipe depth can be reduced suitably；If the high stream plastic clay of soft plastic clay or head, then pressure pipe is deep
Degree can suitably be deepened.After first segment steel sleeve 23 is all pressed into soil (1.2~1.5m more than ground is stayed, in order to take over),
Detect verticality, such as it is unqualified, carry out correction adjustment, installation second, which saves steel sleeve 23 and continues pushing, if qualified fetches earth, so
Continue, construct and grab native operation to pause during scar, notice relevant departments confirm scar, with the rock equipment Spiral digging machine that is nested after confirmation
Continue rock drilling operation to depth 35m is required, confirm supporting course, clean out bottom hole sediment.
When there is crevice water at whole hole metapore bottom, with the distinctive ancillary equipment of cased bore-bole bored concrete pile, punching is grabbed come cleaning eye bottom under water
Sediment is taken with the gas of the principle according to pressure equilibrium and is returned round-robin method.
If after borehole cleaning actual apertures bottom absolute altitude with survey suggestion base absolute altitude and be consistent substantially, no longer carry out pricker spy.It is if practical
Bottom hole absolute altitude with survey suggestion base absolute altitude and be not consistent when, make pricker spy processing as requested.
2.4) rotary drilling rig is in place：Rotary drilling rig 21 should be checked every preparation before rotary drilling rig 21 is in place,
Then pedestal and top after the installation of rotary drilling rig 21 should steadily, after having checked center in place start to drill, at 23 bottom of steel bushing
Place answers low pressure to creep at a slow speed, is drilled into the normal drilling of the rear beginnings of 1.0m or so under steel bushing 23, being drilled into 23 times 3m of steel bushing can adopt
It is crept into high speed.
2.5) in drilling process：Whether operating personnel observe drilling rod at any time vertical, and pass through depth calculator controlling depth,
When 21 drill bit of rotary drilling rig rotates clockwise drill bit, the back alignment of bottom plate cutting plate and cylinder turnover panel, drilling cuttings enters cylinder,
Fill it is a pipeful of after, drill bit rotates counterclockwise, after bottom plate is positioned by locating piece and shut bottom opening, carries body drill bit and is unloaded to ground
Soil.Start to creep into using low speed during drilling, boring native weight should control the 20% of drilling tool weight, to ensure that hole position does not generate partially
Difference, 23 times 3m of drill steel sleeve, which can be used, to creep at a high speed.Rate of penetration is related with pressure, is added using drill bit and drilling rod automated friction
It presses, under 150MPa, penetration rate 20cm/min；Under 200MPa pressure, penetration rate drills for 30cm/min；260MPa pressure
Under, penetration rate drills for 50cm/min.By the rotation of drilling bucket, cut soil, carry body, unload soil and mud support steel sleeve casing
Wall, iterative cycles pore-forming.Mud balance, viscosity, sand factor, colloid should often be examined during drilling at any time to drilling slurry
Rate etc..Formation variation should be also often paid attention in boring procedure, root Ju Different Strata uses different rate of penetrations, in formation variation
Fish for slag specimen in place.
2.6) hole Slag treatment：The hole slag excavator entrucking that rotary digging drilling hole is taken out of in drilling process, dump truck transport to
Place is accumulated, is bulldozed after transporting accumulation place to loading machine.
2.7) borehole cleaning：After drilling reaches requirement depth, inspection hole is carried out with inspection hole device.Aperture, hole perpendicularity, hole depth inspection are closed
Bottom hole cleaning can be carried out after lattice, otherwise re-starts cleaning bottom of hole.After borehole cleaning, bottom hole sink quarrel thickness be not greater than 200mm.
2.8) steel reinforcement cage is disposed：In steel reinforcement cage processing site, steel reinforcement cage processing is processed steel reinforcement cage by design specification requirement
Into the cage of two kinds of forms.
Pore-forming carries out placing steel reinforcement cage work after the assay was approved, after steel reinforcement cage shapes, in crane large arm job area,
It hangs in place in stake holes.It should prevent from reversing during steel reinforcement cage handling, be bent, slowly transfer, avoid collision steel bushing tube wall.
2.9) casing is put into, welds
After treating reinforcing bar cage hoisting, it is put into concrete perfusion conduit.Casing welding is using carbon-dioxide arc welding, welding
When electric current and arc voltage short circuiting arc welding, welding current and arc voltage periodically change.Certain gage of wire tool
There is certain current regulation range.
2.10) concrete perfusion
Concrete uses C25 underwater concretes.In construction 30 are must not exceed using catheter perfusion continuous pouring, break period
Minute, conduit must not collide steel reinforcement cage when being promoted.Retaining sleeve is straight, casing 2~6m of buried depth, and underwater concrete is used during perfusion
Perfusion constructs (being commonly called as backhander engineering method).
Claims (5)
1. a kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway, which is characterized in that including following
Step：
1) levelling of the land, measuring stake position：Live mound, smooth location are removed after marching into the arena；Pile center's point coordinates is calculated, using whole station
Instrument carries out setting-out on the spot according to ground polygon control survey point, and protects stake position central point；
2) pile foundation construction
2.1) base board, multiple line positioning are placed：After measuring pile center, the central point periphery for the stake that measuring goes out is dug out with digging machine
Foundation pit, then base board is embedding wherein, the center of base board and the center of stake is allowed to overlap；
2.2) drill machine with casing is in place
Into hole sleeve, before use, first checking for and correcting the verticality of single-unit steel sleeve (23), perpendicularity deviation is generally 1/
500~1/300, then check the verticality of the overall length steel sleeve (23) by the long configuration of stake, and each section steel sleeve (23) is numbered,
It marks, it is sequentially assembled；Inlay sawtooth pattern titanium alloy cutter head in steel sleeve (23) bottom；
Fixing steel plate is placed and is fixed by label；Loop wheel machine lifting casing convolution drilling machine (14) is carried out in place, in place with fixing steel plate
Cross searching on turntable is set up using reinforcing bar afterwards, and whether identical square with fixing steel plate cross searching with plummet observation center of turntable
It can construct, if misfitting, then repeat the above steps, until center coincide；The level of equipment is adjusted after the completion of in place
Degree, and observe and control the verticality of steel sleeve (23) to be allowed to not less than pile foundation construction requirement；
2.3) soil taking hole forming
First segment steel sleeve (23) is lifted in stake machine jaw, the centering stake heart, by steel sleeve of the bottom equipped with cutting tooth (26)
(23) it is clamped using clamping cylinder (22) control wedge-shaped clamping device (24), pulling out cylinder (25) control using pressure pushes steel sleeve (23),
Compression distance is about 2.5~3.5m, is then fetched earth out of casing with punching grab bucket (18), continues to push steel sleeve while soil is grabbed
(23), remain that steel sleeve (23) base opening is ahead of the depth of excavation face not less than 2.5m；First segment steel sleeve (23) is all
After in press-in soil, detect verticality, such as it is unqualified, carry out correction adjustment, if qualified installation second save steel sleeve (23) continuation
Pushing is fetched earth, and is so continued, and is constructed and is grabbed native operation to pause during scar, confirms scar, with the rock equipment rotary digging that is nested after confirmation
Machine continues rock drilling operation to depth is required, and confirms supporting course, cleans out bottom hole sediment；
2.4) rotary drilling rig is in place：To rotary drilling rig (21), every preparation checks before rotary drilling rig (21) is in place, revolves
It digs the pedestal after drilling machine (21) is installed and then top should steadily, after having checked center in place start to drill；
2.5) in drilling process：It whether vertical observes drilling rod, and passes through depth calculator controlling depth, when rotary drilling rig (21) bores
For head when rotating clockwise drill bit, the back alignment of bottom plate cutting plate and cylinder turnover panel, drilling cuttings enters cylinder, fill it is a pipeful of after, bore
Head rotation counterclockwise, after bottom plate is positioned by locating piece and shut bottom opening, carries body drill bit and unloads soil to ground；Pass through drilling bucket
It rotates, cuts soil, carry body, unload native and mud support steel sleeve casing wall, iterative cycles pore-forming；
2.6) hole Slag treatment：The hole slag excavator entrucking that rotary digging drilling hole is taken out of in drilling process, dump truck transport accumulation to
Place is bulldozed after transporting accumulation place to loading machine；
2.7) borehole cleaning：After drilling reaches requirement depth, inspection hole is carried out with inspection hole device；After aperture, hole perpendicularity, hole depth passed examination
It can carry out bottom hole cleaning；After borehole cleaning, bottom hole sink quarrel thickness be not greater than 200mm；
2.8) steel reinforcement cage is disposed：Steel reinforcement cage is processed into the cage of two kinds of forms；Pore-forming carries out placement steel reinforcement cage after the assay was approved
Work after steel reinforcement cage shapes, in crane large arm job area, is hung in place in stake holes；
2.9) casing is put into, welds：After treating reinforcing bar cage hoisting, it is put into concrete perfusion conduit；Casing welding is using dioxy
Change carbon protection weldering；
2.10) concrete perfusion：Concrete uses C25 underwater concretes；Using catheter perfusion continuous pouring in construction, during interruption
Between must not exceed 30 minutes, conduit promoted when must not collide steel reinforcement cage；Retaining sleeve is straight, casing 2~6m of buried depth, and when perfusion adopts
It is constructed with underwater gliders method.
2. the construction method of the composite bushing drill-pouring pilework of neighbouring existing subway according to claim 1, special
Sign is, in the step 2.3), if soil property is harder clay, head is not high, then the compression distance of steel sleeve (23) can subtract
It is few；If soil property can deepen for soft plastic clay or the high stream plastic clay of head, the compression distance of steel sleeve (23).
3. the construction method of the composite bushing drill-pouring pilework of neighbouring existing subway according to claim 1, special
Sign is, underwater with the distinctive ancillary equipment of cased bore-bole bored concrete pile when there is crevice water at whole hole metapore bottom in the step 2.3)
Punching grabs to carry out cleaning eye bottom sediment or taken with gas to return round-robin method；If after borehole cleaning actual apertures bottom absolute altitude with to survey suggestion base absolute altitude basic
It is consistent, then no longer carries out pricker spy；If actual apertures bottom absolute altitude with survey suggestion base absolute altitude and be not consistent when, make pricker spy processing.
4. the construction method of the composite bushing drill-pouring pilework of neighbouring existing subway according to claim 1, special
Sign is, in the step 2.4), rotary drilling rig (21) is crept at a slow speed in steel bushing (23) bottom low pressure, is drilled into steel bushing (23)
Start normal drilling after beneath 1.0m, be drilled into 3m under steel bushing (23) and crept into using high speed.
5. the construction method of the composite bushing drill-pouring pilework of neighbouring existing subway according to claim 1, special
Sign is, in the step 2.5), rotary drilling rig (21) creep into during check borehole mud mud balance, viscosity, contain
Sand coarse aggregate ratio, colloidity etc..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711417635.1A CN108130904A (en) | 2017-12-25 | 2017-12-25 | A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711417635.1A CN108130904A (en) | 2017-12-25 | 2017-12-25 | A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway |
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| Publication Number | Publication Date |
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| CN108130904A true CN108130904A (en) | 2018-06-08 |
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| CN201711417635.1A Pending CN108130904A (en) | 2017-12-25 | 2017-12-25 | A kind of construction method of the composite bushing drill-pouring pilework of neighbouring existing subway |
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| CN109371960A (en) * | 2018-12-12 | 2019-02-22 | 河北庄重工程机械有限公司 | A kind of SRP engineering method |
| CN109610495A (en) * | 2018-12-11 | 2019-04-12 | 浙江科技学院 | Close to the pile base construction method of Shield-bored tunnels |
| CN110093915A (en) * | 2019-03-27 | 2019-08-06 | 浙江立鹏建设有限公司 | A kind of bored pile construction method |
| CN110206493A (en) * | 2019-07-10 | 2019-09-06 | 贵州建工梵净山建筑工程有限公司 | A kind of full-sleeve full-rotation construction process for bored pile |
| CN110593255A (en) * | 2019-08-29 | 2019-12-20 | 中电建十一局工程有限公司 | Full-casing secant pile construction method suitable for sandy gravel soil layer |
| CN110629781A (en) * | 2019-09-28 | 2019-12-31 | 广州地铁设计研究院股份有限公司 | Concrete-filled steel tube pile group suitable for narrow space and construction method thereof |
| CN111535308A (en) * | 2020-05-27 | 2020-08-14 | 中建一局集团建设发展有限公司 | Full-length steel sleeve construction device and construction method thereof |
| CN112267458A (en) * | 2020-10-14 | 2021-01-26 | 中国建筑第八工程局有限公司 | Micro-disturbance construction method for full-casing cast-in-situ bored pile adjacent to subway |
| CN112942341A (en) * | 2021-02-06 | 2021-06-11 | 中建四局建设发展有限公司 | Construction method for implanting prefabricated pipe pile into complex geology |
| CN113107368A (en) * | 2021-04-13 | 2021-07-13 | 中铁六局集团有限公司交通工程分公司 | Full-casing geological exploration construction method |
| CN113356189A (en) * | 2021-06-21 | 2021-09-07 | 中铁十二局集团有限公司 | Full-sleeve hole forming construction method for rotary drilling rig |
| CN113373918A (en) * | 2021-07-02 | 2021-09-10 | 中建安装集团南京建设有限公司 | Intelligent pouring device for steel sleeve bored pile and construction method |
| CN114508097A (en) * | 2022-03-22 | 2022-05-17 | 中铁十一局集团有限公司 | Rotary drilling construction method for railway line slope pile foundation |
| CN114837209A (en) * | 2022-05-19 | 2022-08-02 | 中铁三局集团第二工程有限公司 | Construction method of deep sand layer large-diameter pile foundation in karst development area |
| CN116837831A (en) * | 2023-08-15 | 2023-10-03 | 浙江省地矿建设有限公司 | Pile foundation perturbation construction method adjacent to subway facilities |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109610495A (en) * | 2018-12-11 | 2019-04-12 | 浙江科技学院 | Close to the pile base construction method of Shield-bored tunnels |
| CN109371960A (en) * | 2018-12-12 | 2019-02-22 | 河北庄重工程机械有限公司 | A kind of SRP engineering method |
| CN110093915A (en) * | 2019-03-27 | 2019-08-06 | 浙江立鹏建设有限公司 | A kind of bored pile construction method |
| CN110206493A (en) * | 2019-07-10 | 2019-09-06 | 贵州建工梵净山建筑工程有限公司 | A kind of full-sleeve full-rotation construction process for bored pile |
| CN110206493B (en) * | 2019-07-10 | 2024-04-30 | 贵州建工梵净山建筑工程有限公司 | Construction process of full-sleeve full-rotation bored pile |
| CN110593255A (en) * | 2019-08-29 | 2019-12-20 | 中电建十一局工程有限公司 | Full-casing secant pile construction method suitable for sandy gravel soil layer |
| CN110629781A (en) * | 2019-09-28 | 2019-12-31 | 广州地铁设计研究院股份有限公司 | Concrete-filled steel tube pile group suitable for narrow space and construction method thereof |
| CN111535308B (en) * | 2020-05-27 | 2022-04-08 | 中建一局集团建设发展有限公司 | Full-length steel sleeve construction device and construction method thereof |
| CN111535308A (en) * | 2020-05-27 | 2020-08-14 | 中建一局集团建设发展有限公司 | Full-length steel sleeve construction device and construction method thereof |
| CN112267458A (en) * | 2020-10-14 | 2021-01-26 | 中国建筑第八工程局有限公司 | Micro-disturbance construction method for full-casing cast-in-situ bored pile adjacent to subway |
| CN112942341A (en) * | 2021-02-06 | 2021-06-11 | 中建四局建设发展有限公司 | Construction method for implanting prefabricated pipe pile into complex geology |
| CN113107368A (en) * | 2021-04-13 | 2021-07-13 | 中铁六局集团有限公司交通工程分公司 | Full-casing geological exploration construction method |
| CN113356189A (en) * | 2021-06-21 | 2021-09-07 | 中铁十二局集团有限公司 | Full-sleeve hole forming construction method for rotary drilling rig |
| CN113373918A (en) * | 2021-07-02 | 2021-09-10 | 中建安装集团南京建设有限公司 | Intelligent pouring device for steel sleeve bored pile and construction method |
| CN113373918B (en) * | 2021-07-02 | 2022-05-13 | 中建安装集团南京建设有限公司 | Intelligent pouring device for steel sleeve bored pile and construction method |
| CN114508097A (en) * | 2022-03-22 | 2022-05-17 | 中铁十一局集团有限公司 | Rotary drilling construction method for railway line slope pile foundation |
| CN114837209A (en) * | 2022-05-19 | 2022-08-02 | 中铁三局集团第二工程有限公司 | Construction method of deep sand layer large-diameter pile foundation in karst development area |
| CN116837831A (en) * | 2023-08-15 | 2023-10-03 | 浙江省地矿建设有限公司 | Pile foundation perturbation construction method adjacent to subway facilities |
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