CN107059847A - A kind of competent bed water mill bores pouring pile hole structure and its construction from the bottom of one's heart - Google Patents
A kind of competent bed water mill bores pouring pile hole structure and its construction from the bottom of one's heart Download PDFInfo
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- CN107059847A CN107059847A CN201710467074.XA CN201710467074A CN107059847A CN 107059847 A CN107059847 A CN 107059847A CN 201710467074 A CN201710467074 A CN 201710467074A CN 107059847 A CN107059847 A CN 107059847A
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- 238000010276 construction Methods 0.000 title claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000011435 rock Substances 0.000 claims abstract description 68
- 238000005553 drilling Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 208000002599 Smear Layer Diseases 0.000 claims abstract 2
- 239000010410 layer Substances 0.000 claims description 15
- 239000011083 cement mortar Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 abstract 1
- 230000008569 process Effects 0.000 description 6
- 238000005422 blasting Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- -1 silt Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Pouring pile hole structure and its construction from the bottom of one's heart are bored the invention discloses a kind of competent bed water mill, the structure includes core and walling crib, walling crib is located at the periphery of core, the inwall of walling crib is coated with inside smear layer, walling crib according to stake depth cloth disk number from the bottom of one's heart, and single-deck sets a circle stake holes circle, stake holes circle includes some drill core holes, intersect between two neighboring drill core hole and the inwall of outside and walling crib is tangent, the core at drill core hole is cut to form free face by water mill drilling, and then empties center rock mass；This method include preparation of construction, construction layout, stake holes fore shaft, stake holes from the bottom of one's heart, go out rock slag, stake holes control, stake holes amendment and stake holes and the step such as check and accept.The present invention with water mill by boring pouring pile hole construction technology from the bottom of one's heart, it is efficiently completed each specification pile foundation construction, effectively control influence of the construction to the intensive complex environment in periphery and business business district, it is ensured that the safety and smooth construction of engineering, achieve good economic benefit and social benefit.
Description
Technical Field
The invention relates to the field of building construction, in particular to a hard rock stratum water grinding drilling core-digging cast-in-place pile hole forming structure and a construction method thereof.
Background
The cast-in-place pile is a common foundation form in foundation engineering, and the hole forming mode of the cast-in-place pile has various forms due to different hydrogeological conditions. Mudstone, argillaceous sandstone, sandstone and the like are common in basic geological structures in Chongqing areas, and the blasting method is a hole forming method which has high construction efficiency of penetrating through hard rock stratums or entering rocks, but has obvious defects, such as high blasting control and blasting technical requirements, large influence on the surrounding environment due to vibration noise, dust and the like, loose hole walls after hole forming, inaccurate hole forming size and the like, and secondary manual chiseling is needed.
The above-mentioned drawbacks are worth solving.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a hard rock stratum core-drilling bored concrete pile hole-forming structure and a construction method thereof.
The technical scheme of the invention is as follows:
the utility model provides a hard stratum water grinds to bore and draws core bored concrete pile pore-forming structure, its characterized in that, includes core and walling crib, the walling crib is located the periphery of core, the inner wall of walling crib has been paintd the layer, the inside of walling crib is equipped with round stake hole circle, the centre of a circle of stake hole circle with the centre of a circle coincidence of walling crib, stake hole circle includes a plurality of drill core holes, adjacent two alternately make between the drill core hole adjacent two the centre of a circle interval of drill core hole is less than the diameter of drill core hole, the diameter of stake hole circle is 160mm, the outside of drill core hole with the inner wall of walling crib is tangent, the core of drill core hole department draws empty through the water grinds to bore and forms and faces the vacancy face.
The invention according to the scheme is characterized in that the walling crib is constructed by rock bricks and M5 cement mortar, and the thickness of the walling crib is 240 mm.
The invention according to the scheme is characterized in that the coating layer is 1:2 cement mortar.
Further, the thickness of the coating layer is 10 mm.
The invention according to the scheme is characterized in that the elevation of the top of the walling crib is 300mm higher than the ground.
A construction method for a hard rock stratum water grinding drill coring cast-in-place pile hole forming structure is characterized by comprising the following steps:
step 1, construction preparation, including technical learning of construction projects and preparation of site environment, people, materials and machines;
2, positioning and lofting, namely positioning a pile core point according to a construction scheme before drilling, and measuring the inner edge line of the well-releasing ring according to the radius of a pile hole;
step 3, pile hole locking is carried out, and the method specifically comprises the steps of removing a loose layer, accurately positioning and building a coating layer;
step 4, pile hole core digging, which specifically comprises the steps of drilling hole stripping and pile core rock mass disintegration and blocking,
step 5, discharging rock slag, namely hoisting and discharging the rock slag in a hole by using a winch and an orifice lifting frame, sequentially discharging the rock core drilled by the water mill drill after one-time single-cycle construction operation, and discharging the rock slag from one side of a pile hole;
step 6, pile hole control, namely projecting the center line of the pile into the hole according to the cross control point of the pile core on the plane of the locking notch, detecting the diameter and the verticality of the pile hole after the water-mill drill finishes drilling one layer of slag, and taking the zigzag convex part when measuring;
step 7, correcting the pile hole, correcting the position of the pile hole in time if the position deviates, marking the drilling and coring position of the periphery of the next cycle by using a water mill drill, and entering the hole pile construction of the next cycle;
and 8, checking and accepting the pile hole, circularly drilling until the rock embedding depth is designed, confirming through the pile position geology and meeting the design meeting requirements, and then carrying out the next procedure.
The invention according to the above aspect is characterized in that, in the step 2, the diameter of the inner diameter of the well ring is 50mm larger than the diameter of the pile.
The invention according to the above scheme is characterized in that the step 3 specifically comprises the steps of:
(1) removing loose soil and stone layers on the surface layer of the pile position, and building a well ring with the top elevation 300mm higher than the ground level to lock the pile hole;
(2) the retaining wall that the fore shaft adopted MU10 shale brick, M5 cement mortar to build 240mm thick becomes walling crib, and 1 that 10mm is thick is smeared to the inner wall: 2, cement mortar;
(3) and marking the cross control points of the pile core on the vertical surface and the plane in the locking opening by using red paint.
The present invention according to the above aspect is characterized in that, in the step 4:
and (3) drilling and stripping: arranging a plurality of drill core points along the wall of the pile foundation hole, wherein the drill core holes are tangent to the inner wall of the locking notch, and the center distance between adjacent drill cores is smaller than the diameter of the drill cylinder; sequentially drilling peripheral rock cores, and taking out the peripheral rock cores to form a circular face;
the pile core rock mass is disintegrated and blocked: drilling a core along the radius of the pile, equally dividing the core rock into three parts, wherein each independent rock mass accounts for 1/3, and splitting the rock by using a portable water drilling machine matched with a steel wedge to subdivide the pile rock into a plurality of equal parts.
Further, the diameter of the core in the drill stripping was 160 mm.
Further, the cut-in cores drilled out of the peripheral cores were approximately 600mm high.
The invention according to the above scheme is characterized in that in the step 7, the position deviation of the center point of the control disc pile hole and the projection center is controlled within 50mm, and the pile hole verticality is controlled within 5L/1000.
The invention according to the scheme has the advantages that:
1. the single machine of the water mill drilling machine works, the machine base occupies small space and is convenient to move, the mutual influence of the simultaneous operation of a plurality of machines is weak, the operation is flexible, and the work efficiency is high;
2. the drill bit applies pressure vertically, the alloy steel blade cuts, and the pile hole forming accuracy is high and the quality is good.
3. The water mill drilling machine has the advantages of low operation noise, no dust, no vibration and small influence on the surrounding environment and the existing building. It is suitable for the construction of urban areas and commercial circle areas with strict control on safety and noise.
4. The diameter of the hole formed by the drilling machine is not limited by the diameter of the pile, the process and the equipment are simple, and the method is also suitable for the construction of the pile drilled by the super-large diameter pile.
Drawings
FIG. 1 is a core and curb positioning layout of the present invention.
Fig. 2 is a schematic structural view of pile core positioning of the present invention.
FIG. 3 is a schematic view of the configuration of the present invention for core removal and positioning of a water mill.
Fig. 4 is a schematic structural view of the rock face of the pile core body.
FIG. 5 is a flow chart of the construction method of the present invention.
In the figure, 1, core; 13. pile core control points; 2. a well ring; 21. the inner diameter of a well ring; 3. pile hole rings; 31. pile core; 32. the inner diameter of the pile hole; 33. drilling a core hole; 34. the diameter of the drill cylinder; 35. core center distance is drilled; 5. pile hole.
Detailed Description
The invention is further described with reference to the following figures and embodiments:
as shown in figures 1-4, the hard rock stratum water mill drilling coring filling pile hole forming structure comprises a core of a body rock 1 and a well collar 2, wherein the well collar 2 is positioned on the periphery of the core, and the elevation of the top of the well collar 2 is 300mm higher than the ground.
The walling crib 2 is built by rock bricks and M5 cement mortar, and the thickness of the walling crib 2 is 240 mm. The inner wall of the well ring 2 is coated with a coating layer which is 1:2 cement mortar, and the thickness of the coating layer is 10 mm.
The pile hole ring 3 is arranged in the well ring 2, the circle center of the pile hole ring 3 coincides with the circle center of the well ring 2, the pile hole ring 3 comprises a plurality of drill core holes 33, the drill core center distance 35 between every two adjacent drill core holes 33 is smaller than the diameter 34 of a drill cylinder in a crossed mode, the diameter of the pile hole ring 3 is 160mm, and the outer side of each drill core hole 33 is tangent to the inner wall of the well ring 2.
The pile core control point 13, the inner diameter of the well ring, the inner diameter 32 of the pile hole and the diameter 34 of the drill cylinder are marked as shown in the figure, and the rock core at the position of the pile hole 5 is hollowed by a water milling drill to form a free surface.
As shown in fig. 5, a construction method for a hard rock stratum water mill drilling core-digging filling pile hole forming structure includes the following steps:
1. construction preparation, including technical learning of the construction project and preparation for the field environment.
The technical learning of the construction project comprises approval of the construction project, learning of technical contents and learning of safety measures.
The preparation of the field environment includes: 1) leveling the site, checking the axis and the elevation control point, and leading the pore forming surface to reach the stroke chemical rock stratum; 2) people, materials and machines are in place on time according to the construction progress and are checked and confirmed; 3) and (4) setting a secondary water storage sedimentation tank by combining a basic plane layout.
2. And (6) positioning and lofting.
Before drilling, according to a construction scheme, positioning the point position of a pile core 31, measuring the inner edge line of the well ring by the inner diameter 32 of a pile hole, wherein the requirement of the inner diameter of the well ring 2 is 50mm larger than the inner diameter 32 of the pile hole.
3. And locking the pile hole 5. The method specifically comprises the following steps:
(1) removing loose soil and stone layers on the surface layer of the pile position, and building a walling crib 2 with the top elevation 300mm higher than the ground level to lock the pile hole 5;
(2) the retaining wall that the fore shaft adopted MU10 shale brick, M5 cement mortar to build 240mm thick becomes walling crib, and 1 that 10mm is thick is smeared to the inner wall: 2, cement mortar;
(3) the cross pile core control points 13 are marked on the vertical surface and the plane in the locking opening by using red paint, so that the center positioning and the elevation of the pile are monitored in the construction process, and the size and the verticality are ensured to be within an error range.
4. The pile hole 5 is cored, and the method specifically comprises the steps of drilling and stripping and disassembling and blocking the pile core rock body 1.
And (3) drilling and stripping: a plurality of coring points are arranged along the wall of the pile foundation hole (in the embodiment, the diameter of the coring point is 160mm, the diameter of the coring point can be adjusted according to the pile diameter and equipment conditions), a coring circle is tangent to the inner wall of the locking notch, and the center distance between adjacent cores is smaller than the diameter (less than or equal to 160 mm) of the drill barrel; and sequentially drilling peripheral cores, cutting into the cores to reach the height of about 600mm, and taking out the peripheral cores to form a circular face.
The pile core rock mass is disintegrated and blocked: drilling a core along the radius of the pile, equally dividing the core rock into three parts, wherein each independent rock mass accounts for 1/3, and splitting the rock by using a portable water drilling machine matched with a steel wedge to subdivide the pile rock into a plurality of equal parts.
5. And (6) rock slag discharging.
The downthehole simple and easy hoisting frame handling of utilization hoist engine and drill way of slagging tap, once single cycle construction operation back, slag tap in proper order with the core that the water mill bored out, and the one side of slagging tap from stake hole 5 goes on.
6. The stake hole 5 controls.
According to the plane cross pile core control point 13 on the fore shaft, the central line of the pile is projected to the hole, after the water grinding drill finishes one layer of slag removal, the diameter and the verticality of the drill core hole 33 are detected, and the sawtooth-shaped convex part is taken when the water grinding drill is measured.
7. And correcting the drill core hole.
When the position deviation of the center point of the pile hole 5 and the projection center is controlled within 50mm, the verticality of the pile hole 5 is controlled within 5L/1000. If deviation occurs, correcting in time, marking the drilling and coring position of the peripheral water mill drill of the next cycle, and entering the hole pile construction of the next cycle;
8. and (5) checking and accepting the pile hole.
And (4) circularly drilling until the rock-socketed depth is designed, wherein the hole bottom must be leveled without loose slag, silt, sediment or disturbed soft layer, and then contacting a geological professional engineer of a design department to confirm the pile position geology, and performing next procedure after meeting the design requirement.
Examples of specific applications
1. Longxin central project
The west surface and the south surface of Longxin central engineering are connected with the existing high-rise building and the construction engineering, an engineering foundation pit is excavated for 44m, the elevation of the pit bottom is lower than that of peripheral building facilities, and the construction environment is extremely complex. The engineering structure is in a frame-barrel structure, geology is mudstone, sandy mudstone and sandstone, a bottomless cast-in-place pile foundation is arranged below tower and skirt building columns, the maximum design size of a pile hole 5 is 3.4m, the rock depth is 6.8m, a foundation bearing layer is complete weathered sandy mudstone, a site foundation pit is excavated to 250mm below an underground 7-layer terrace and enters a weathered sandy mudstone layer, and a complex construction environment is not beneficial to adopting the blast pile foundation.
The construction method is adopted for construction of the pile foundation under the column, the process is also applicable to excavation of the large-diameter pile hole 5, no safety accident occurs, the construction efficiency is high, the side wall of the pile hole 5 is smooth, mellow and attractive, the geometric dimension of the hole position is accurate, the deviation between concrete pouring and budget amount is small, and the cost is saved. The detection is carried out on the adjacent buildings and traffic facilities, and the damage phenomenon is avoided.
2. Wall street plaza Xileden hotel project
The wall street plaza Xiledong hotel project is two high-intelligent and automatic super high-rise business office buildings integrating hotel, office, business and service functions. The engineering foundation pit is excavated by 11.8m, the elevation of the pit bottom is lower than that of peripheral building facilities, and the construction environment is complex. The engineering structure is in a frame-cylinder structure, geology is mudstone, sandy mudstone, sandstone and stroke-induced sandy mudstone, non-expanded-base cast-in-place pile foundations are arranged below tower columns and skirt tower columns, the maximum design size of a pile hole 5 is 1.8m, the depth of the rock can be 6.8m, a foundation bearing layer is complete medium-weathering sandy mudstone, a site foundation pit is excavated to 250mm below 2 underground terraces and enters the stroke-induced sandy mudstone, and the complicated construction environment is not favorable for blasting and excavating the pile foundations.
The construction method is adopted for construction of the pile foundation under the column, the process is also applicable to excavation of the large-diameter pile hole 5, no safety accident occurs, the construction efficiency is high, the side wall of the pile hole 5 is smooth, mellow and attractive, the geometric dimension of the hole position is accurate, the deviation between concrete pouring and budget amount is small, and the cost is saved. The detection is carried out on the adjacent buildings and traffic facilities, and the damage phenomenon is avoided.
In two specific application embodiments:
(1) rechecking and checking the pile hole forming of the project, wherein all the main control projects meet the design and specification requirements, the deviation projects are allowed to reach the specification requirements and target values, and the deviation projects are checked and accepted for one time to obtain the consistent and favorable comments of government administrative departments, Party A and supervision;
(2) the high-pressure water pipe is equipped to wet the rock during the construction of the water mill drill, so that the dust, noise and smoke discharge amount during cutting are small, the influence on operators is low, the low-carbon, environment-friendly and green construction policy is responded positively, and the popularization value is very high;
(3) the drilling cylinder cuts rock mass, the hole wall forming quality is good, secondary repair is reduced, the construction period and the cost are saved, and the win-win effect is achieved;
(4) the construction method of the hole forming of the oversized-diameter core-digging cast-in-place pile in the rock stratum is realized, the construction mode is simple and easy, and the shaping is realized;
(5) the method realizes the replacement of kinetic energy from electric energy, reduces the disturbance to the construction environment, avoids the compensation of enterprises on shot damage, and contributes to advocating safe production and enterprise sustainable development.
The concrete benefits brought by the construction method and the structure of the invention comprise economic benefits, social benefits and environmental protection benefits. Wherein,
1. economic benefits
Taking Longxin central foundation engineering as an example, pile foundations are all below 10m, underground water level is high, 288 piles are totally arranged, the total length is about 1280m, the stone volume of the pile foundations is about 3000m, and the construction is carried out by adopting the construction method.
Table one: water grinding drill bored concrete pile excavation economic benefits analysis table
The method brings direct economic benefits: (580.93-445.66) yuan/m3×3000m3405810 yuan.
2. Social benefits
The construction method has the advantages of simple process, feasible operation, high construction efficiency and accurate and attractive pile hole forming; particularly, under the conditions of narrow construction sites and the like in commercial downtown areas, residential areas, building dense areas, complex road sections of traffic facilities and the like, the construction safety coefficient is greatly improved, the interference on the outside is reduced, and the adverse effect caused by blasting is avoided; the method breaks through the equipment capability of the large-diameter cast-in-situ bored pile, fully shows the construction technical level strength of enterprises, obtains consistent and favorable comment from the outside, and obtains good social benefit.
3. Environmental protection benefit
The dust and noise pollution is low in the construction process, the core is regularly formed, the secondary utilization rate is high, and the produced building slag is less; the construction water pool precipitation can be recycled, so that water resources are saved, and the national energy-saving and emission-reducing policy requirements are met.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
The invention is described above with reference to the accompanying drawings, which are illustrative, and it is obvious that the implementation of the invention is not limited in the above manner, and it is within the scope of the invention to adopt various modifications of the inventive method concept and technical solution, or to apply the inventive concept and technical solution to other fields without modification.
Claims (10)
1. A hard rock stratum water mill drill coring cast-in-place pile pore-forming structure is characterized by comprising a rock core and a well ring, wherein the well ring is positioned on the periphery of the rock core,
the inner wall of the well ring is coated with a coating layer,
a circle of pile hole ring is arranged inside the well ring, the circle center of the pile hole ring is superposed with the circle center of the well ring, the pile hole ring comprises a plurality of drill core holes, the adjacent two drill core holes are crossed, so that the circle center distance of the adjacent two drill core holes is smaller than the diameter of the drill core holes, the outer sides of the drill core holes are tangent to the inner wall of the well ring,
and the rock core at the drill core hole is hollowed by a water abrasive drill to form a free surface.
2. The hard rock stratum water mill bores and draws heart bored concrete pile pore-forming structure of claim 1, characterized in that, the walling crib is built by rock brick and M5 cement mortar.
3. The hard rock stratum water mill bores and draws heart bored concrete pile pore-forming structure of claim 1, characterized in that, the smear layer is 1:2 cement mortar.
4. The hard rock stratum water mill bores and draws heart bored concrete pile pore-forming structure of claim 3, characterized by, that the thickness of scribbling layer is 10 mm.
5. A construction method for a hard rock stratum water grinding drill coring cast-in-place pile hole forming structure is characterized by comprising the following steps:
step 1, construction preparation, including technical learning of construction projects and preparation of site environment, people, materials and machines;
2, positioning and lofting, namely positioning a pile core point according to a construction scheme before drilling, and measuring the inner edge line of the well-releasing ring according to the radius of a pile hole;
step 3, pile hole locking is carried out, and the method specifically comprises the steps of removing a loose layer, accurately positioning and building a coating layer;
step 4, pile hole core digging, which specifically comprises the steps of drilling hole stripping and pile core rock mass disintegration and blocking,
step 5, discharging rock slag, namely hoisting and discharging the rock slag in a hole by using a winch and an orifice lifting frame, sequentially discharging the rock core drilled by the water mill drill after one-time single-cycle construction operation, and discharging the rock slag from one side of a pile hole;
step 6, pile hole control, namely projecting the center line of the pile into the hole according to the cross control point of the pile core on the plane of the locking notch, detecting the diameter and the verticality of the pile hole after the water-mill drill finishes drilling one layer of slag, and taking the zigzag convex part when measuring;
step 7, correcting the pile hole, correcting the position of the pile hole in time if the position deviates, marking the drilling and coring position of the periphery of the next cycle by using a water mill drill, and entering the hole pile construction of the next cycle;
and 8, checking and accepting the pile hole, circularly drilling until the rock embedding depth is designed, confirming through the pile position geology and meeting the design meeting requirements, and then carrying out the next procedure.
6. The construction method for the hard rock stratum water mill drilling coring filling pile hole forming structure as claimed in claim 5, wherein the step 3 specifically comprises the steps of:
(1) removing loose soil and stone layers on the surface layer of the pile position, and building a well ring with the top elevation 300mm higher than the ground level to lock the pile hole;
(2) the retaining wall that the fore shaft adopted MU10 shale brick, M5 cement mortar to build 240mm thick becomes walling crib, and 1 that 10mm is thick is smeared to the inner wall: 2, cement mortar;
(3) and marking the cross control points of the pile core on the vertical surface and the plane in the locking opening by using red paint.
7. The construction method for the hard rock stratum water mill drilling coring filling pile hole forming structure according to claim 5, characterized in that in the step 4:
and (3) drilling and stripping: arranging a plurality of drill core points along the wall of the pile foundation hole, wherein the drill core holes are tangent to the inner wall of the locking notch, and the center distance between adjacent drill cores is smaller than the diameter of the drill cylinder; sequentially drilling peripheral rock cores, and taking out the peripheral rock cores to form a circular face;
the pile core rock mass is disintegrated and blocked: drilling a core along the radius of the pile, equally dividing the core rock into three parts, wherein each independent rock mass accounts for 1/3, and splitting the rock by using a portable water drilling machine matched with a steel wedge to subdivide the pile rock into a plurality of equal parts.
8. The construction method of the hard rock stratum water mill drilling coring filling pile hole forming structure, according to claim 7, is characterized in that the coring diameter in the drilling stripping is 160 mm.
9. The construction method of the hard rock stratum water mill drilling coring filling pile hole forming structure, according to claim 7, is characterized in that the cutting core height of the peripheral core is about 600 mm.
10. The construction method of the hard rock stratum water mill drilling coring filling pile hole forming structure as claimed in claim 5, wherein in the step 7, the position deviation of the control disc pile hole center point and the projection center is controlled within 50mm, and the pile hole verticality is controlled within 5L/1000.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468341A (en) * | 2018-05-24 | 2018-08-31 | 杭州昂创科技有限公司 | Friction pile-ripple steel arch-drawing anchor combination slope protection structure and construction method |
| CN108625385A (en) * | 2018-06-25 | 2018-10-09 | 成都市市政工程（集团）有限责任公司 | Mountain area rocky stratum bridge pile foundation water mill drilling construction method |
| CN108952612A (en) * | 2018-06-15 | 2018-12-07 | 上海二十冶建设有限公司 | A kind of artificial digging pile quickly enters rock drilling construction method |
| CN109403352A (en) * | 2018-09-10 | 2019-03-01 | 中建四局第六建筑工程有限公司 | A kind of middle weathered rock formation super-large diameter hole stake combination excavation method |
| CN110513038A (en) * | 2019-08-27 | 2019-11-29 | 中铁六局集团有限公司 | It closes on Business Line rock geology pile foundation water mill and bores construction |
| CN110820726A (en) * | 2019-11-18 | 2020-02-21 | 中国葛洲坝集团路桥工程有限公司 | Pile foundation pore-forming method in environment where disturbance is not suitable for surrounding of hard rock in mountainous area |
| CN113482013A (en) * | 2021-07-12 | 2021-10-08 | 中国水电建设集团十五工程局有限公司 | Manual hole digging construction method for cast-in-place pile |
| CN117702711A (en) * | 2024-01-15 | 2024-03-15 | 广东大禹水利建设有限公司 | Soft soil foundation pile foundation safety intelligent sensing construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278063A (en) * | 2011-05-13 | 2011-12-14 | 四川省第三建筑工程公司 | Water-mill drilling construction process for Karst terrain |
| CN102409978A (en) * | 2011-10-26 | 2012-04-11 | 中冶集团武汉勘察研究院有限公司 | Rotary drilling hole forming method by using multi-stage alloy pilot roller bit in complex stratum cast-in-place pile construction |
| CN103867120A (en) * | 2014-03-24 | 2014-06-18 | 卢耒运 | Construction method of drilled grouting piles under special geological condition |
| CN207452888U (en) * | 2017-06-20 | 2018-06-05 | 中国华西企业有限公司 | A kind of competent bed water mill bores pouring pile hole structure from the bottom of one's heart |
-
2017
- 2017-06-20 CN CN201710467074.XA patent/CN107059847A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102278063A (en) * | 2011-05-13 | 2011-12-14 | 四川省第三建筑工程公司 | Water-mill drilling construction process for Karst terrain |
| CN102409978A (en) * | 2011-10-26 | 2012-04-11 | 中冶集团武汉勘察研究院有限公司 | Rotary drilling hole forming method by using multi-stage alloy pilot roller bit in complex stratum cast-in-place pile construction |
| CN103867120A (en) * | 2014-03-24 | 2014-06-18 | 卢耒运 | Construction method of drilled grouting piles under special geological condition |
| CN207452888U (en) * | 2017-06-20 | 2018-06-05 | 中国华西企业有限公司 | A kind of competent bed water mill bores pouring pile hole structure from the bottom of one's heart |
Non-Patent Citations (2)
| Title |
|---|
| 宋锦峰等: "坚硬岩层条件下人工挖孔桩施工方法探究", 《建筑技术开发》 * |
| 黄司: "超大直径岩石桩水钻取芯成孔的施工技术", 《交通标准化》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468341A (en) * | 2018-05-24 | 2018-08-31 | 杭州昂创科技有限公司 | Friction pile-ripple steel arch-drawing anchor combination slope protection structure and construction method |
| CN108952612A (en) * | 2018-06-15 | 2018-12-07 | 上海二十冶建设有限公司 | A kind of artificial digging pile quickly enters rock drilling construction method |
| CN108625385A (en) * | 2018-06-25 | 2018-10-09 | 成都市市政工程（集团）有限责任公司 | Mountain area rocky stratum bridge pile foundation water mill drilling construction method |
| CN109403352A (en) * | 2018-09-10 | 2019-03-01 | 中建四局第六建筑工程有限公司 | A kind of middle weathered rock formation super-large diameter hole stake combination excavation method |
| CN110513038A (en) * | 2019-08-27 | 2019-11-29 | 中铁六局集团有限公司 | It closes on Business Line rock geology pile foundation water mill and bores construction |
| CN110820726A (en) * | 2019-11-18 | 2020-02-21 | 中国葛洲坝集团路桥工程有限公司 | Pile foundation pore-forming method in environment where disturbance is not suitable for surrounding of hard rock in mountainous area |
| CN113482013A (en) * | 2021-07-12 | 2021-10-08 | 中国水电建设集团十五工程局有限公司 | Manual hole digging construction method for cast-in-place pile |
| CN117702711A (en) * | 2024-01-15 | 2024-03-15 | 广东大禹水利建设有限公司 | Soft soil foundation pile foundation safety intelligent sensing construction method |
| CN117702711B (en) * | 2024-01-15 | 2024-06-04 | 广东大禹水利建设有限公司 | Soft soil foundation pile foundation safety intelligent sensing construction method |
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Application publication date: 20170818 |