CN108442362B - Hole forming construction process for coastal drilled pile penetrating riprap layer - Google Patents
Hole forming construction process for coastal drilled pile penetrating riprap layer Download PDFInfo
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- CN108442362B CN108442362B CN201810194480.8A CN201810194480A CN108442362B CN 108442362 B CN108442362 B CN 108442362B CN 201810194480 A CN201810194480 A CN 201810194480A CN 108442362 B CN108442362 B CN 108442362B
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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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- 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
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
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- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
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Abstract
The invention discloses a hole forming construction process for a coastal drilling pile penetrating through a riprap layer, which utilizes a double-steel pile casing structure capable of alternately passing through the riprap layer to cooperate with drilling pile equipment to alternately make slurry and form holes in a riprap block stone area of a seaside breakwater, and during drilling, an outer steel pile casing and an inner steel pile casing of the double-steel pile casing structure alternately make slurry and follow up. The invention has simple structure and convenient installation and use, and the double-pile-casing structure is formed by designing the inner protective casing in the traditional outer protective casing and can realize the sectional drilling forming of the pile diameter of the drilled pile, thereby avoiding the condition that the single-pile-casing structure is blocked and the steel pile casing can not sink any more.
Description
Technical Field
The invention relates to a construction method for drilling a pile through a riprap layer with a thicker coastal riprap layer, belongs to the technical field of bridge methods, and particularly relates to a construction method for drilling a pile in a seaside reclamation area and a breakwater reclamation block stone area.
Background
At present, the land reclamation from the sea in the southeast coast is fast in development, a bridge or a hydraulic wharf approach bridge is planned to be connected with a breakwater for flood control of the land reclamation from the sea, a bridge foundation is mainly a cast-in-situ bored pile, the breakwater is a riprap foundation, a large stone slope protection surface and a wrest rock slope protection surface. The large stones and the rubbles have large thickness, and the drilled pile is constructed in the area affected by sea wave and tide, because a large number of pores exist among the rubbles, the tide type at the sand and semi-island of the urban harbor is normal full-day tide, when the full-day tide is obvious, the tidal range is large (the maximum tidal range is more than or equal to 4.5m), the construction area of the drilled pile is only 1.5m higher than the highest tidal range, and the horizontal distance is about 10 m.
Disclosure of Invention
Aiming at overcoming the defects in the prior art, the invention provides a method for forming a hole by using a bored pile in a riprap area along the coast, which can guide the hole forming construction of the bored pile on the riprap foundation of a breakwater for land reclamation from the sea.
In order to solve the technical problem, the invention adopts a hole forming construction process for a coastal drilling pile penetrating through a riprap layer, a double-steel pile casing structure capable of alternately operating through the riprap layer is matched with drilling pile equipment to alternately make slurry and form holes in a riprap area of a seaside breakwater, and during drilling, an outer steel pile casing and an inner steel pile casing of the double-steel pile casing structure alternately make slurry and follow up.
In a preferred embodiment of the present invention, the specific steps comprise: (1) excavating riprap in the sea side breakwater riprap region by using an excavator until the riprap reaches a high level tide position; (2) installing a steel casing structure by using a crane, drilling for about 3m at a high tide level, then lowering an outer steel casing of the steel casing structure, and continuing drilling after ensuring the verticality of the outer steel casing; (3) slurry is made in an outer steel casing of the steel casing structure, a vibration hammer or a percussion drill bit is utilized to follow the outer steel casing, and when the outer steel casing cannot follow, the inner steel casing is lowered down by a crane;
(4) after the inner steel protecting cylinder is put down in place, the inner steel protecting cylinder is followed by a vibration hammer or a percussion drill bit while the inner steel protecting cylinder is followed by pulp making, when the inner steel protecting cylinder cannot follow, the vibration hammer or the percussion drill bit is then used for following the outer steel protecting cylinder, the inner steel protecting cylinder is lifted for a certain distance by a crane, the inner steel protecting cylinder is hung on the inner wall of the outer steel protecting cylinder by a hook, the percussion drill bit is put down for operation, after the percussion operation is carried out for a certain depth, the hook between the inner steel protecting cylinder and the outer steel protecting cylinder is removed, the inner steel protecting cylinder is put down to the bottom of a hole, and the percussion drill bit is then used for operation construction, so that the alternative pulp making follow; (5) when the outer steel protects a section of thick bamboo and pierces through the riprap layer and gets into the fine sand layer of powder, the section of thick bamboo bottom elevation of an inner steel protects a section of thick bamboo and can stably make thick liquid in the lower position of low tide level, stops two steel and protects a section of thick bamboo structure follow-up, gets into conventional drilling stage, pulls out the outer steel after the construction is accomplished and protects a section of thick bamboo and cuts out deformation part reuse, and an inner steel protects a section of thick bamboo and buries in the pile bolck region as permanent.
In a preferred embodiment of the invention, the depth of each follow-up of the outer steel casing is more than 5m, and the depth of each follow-up bottom end of the inner steel casing is 1-2 m.
In a preferred embodiment of the invention, in the step (2), a crane is used for installing the steel casing structure and an outer steel casing is put down after drilling for 3m at a high tide level.
The invention also discloses a double-steel protective cylinder structure capable of alternately operating through a riprap layer, which comprises an outer steel protective cylinder, wherein a first reinforcing sleeve and a first edge angle are arranged on the outer steel protective cylinder, a first limiting hole arranged along the radial direction of the outer steel protective cylinder is arranged on the outer steel protective cylinder, an inner steel protective cylinder is coaxially arranged in the outer steel protective cylinder, the outer diameter of the inner steel protective cylinder corresponds to the inner diameter of the first reinforcing sleeve, a second reinforcing sleeve and a second edge angle are arranged on the inner steel protective cylinder, a second limiting hole arranged along the radial direction of the inner steel protective cylinder is arranged on the inner steel protective cylinder, and the inner diameter of the first limiting hole corresponds to the inner diameter of the second limiting hole.
In a preferred embodiment of the invention, the end inner ring of the first reinforcing sleeve is provided with a cutting edge.
In a preferred embodiment of the invention, the end inner ring of the second reinforcing sleeve is provided with a cutting edge.
In a preferred embodiment of the present invention, the other end of the outer steel casing is detachably mounted with an impact frame.
In a preferred embodiment of the invention, the impact frame is formed by welding two groups of profile steels which are arranged in parallel and crossed.
In a preferred embodiment of the invention, the outer steel casing is provided with a mounting groove for mounting the impact frame.
In a preferred embodiment of the present invention, a first hook is disposed on an inner wall of the outer steel casing, a second hook is disposed on an outer wall of the inner steel casing, and the first hook and the second hook are connected by a suspension cable.
The invention has the beneficial effects that: the invention has simple structure and convenient installation and use, effectively realizes the hole forming construction of the bored pile on the breakwater riprap foundation surrounding sea reclamation by designing the process of alternately making slurry and forming holes in the breakwater riprap area by utilizing the double-steel pile casing structure, and the double-steel casing structure is formed by designing the inner steel casing in the traditional outer steel casing and can realize the sectional boring forming of the pile diameter of the bored pile, thereby avoiding the condition that the single casing structure is blocked to sink and can not sink any more; the invention realizes the positioning and installation of the double protecting cylinders in a non-working state by respectively designing the limiting holes on the outer steel protecting cylinder and the inner steel protecting cylinder, and effectively improves the efficiency of the double protecting cylinders in alternate working by arranging the suspension cable and the lifting hook between the double protecting cylinders.
Drawings
FIG. 1 is a schematic structural diagram of a double casing structure for offshore drilling pile hole-forming through a riprap layer according to an embodiment of the invention;
FIG. 2 is a cross-sectional view of a dual casing structure for use in a coastal bored pile hole-forming operation through a riprap layer in accordance with an embodiment of the present invention;
FIG. 3 is a front view of an outer steel casing of a double casing structure for use in a hole-forming construction of a bored pile through a riprap layer along the sea in accordance with an embodiment of the present invention;
FIG. 4 is a front sectional view A-A of an outer steel casing of a dual casing structure for use in a hole-forming operation of a bored pile through a riprap layer along the sea according to an embodiment of the present invention;
FIG. 5 is an isometric view of an outer steel casing of a dual casing structure for use in a coastal bored pile hole-forming operation through a riprap layer in accordance with an embodiment of the present invention;
FIG. 6 is a front view of an inner steel casing of a double casing structure for use in a hole-forming construction of a bored pile through a riprap layer along the sea in accordance with an embodiment of the present invention;
FIG. 7 is a cross-sectional view B-B of an inner steel casing of a double casing structure for use in a hole-forming construction of a bored pile penetrating a riprap layer along the sea according to an embodiment of the present invention;
FIG. 8 is a front elevation isometric view of an inner steel casing of a dual casing configuration for use in a coastal bored pile hole-forming operation through a riprap layer in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram of the combination of a suspension cable and a hook of a double casing structure for offshore drilling pile hole-forming through a riprap layer according to an embodiment of the invention;
FIG. 10 is a schematic view of an impact frame of a dual casing structure for use in a hole-forming operation of a bored pile through a riprap layer along the sea in accordance with an embodiment of the present invention;
FIG. 11 is a flow chart of the operation of a dual casing structure for use in a coastal bored pile hole-forming operation through a riprap layer in accordance with an embodiment of the present invention;
in the figure: 1-outer steel casing, 2-first edge angle, 3-first reinforcing sleeve, 4-inner steel casing, 5-second reinforcing sleeve, 6-second edge angle, 7-first limiting hole, 8-second limiting hole, 9-edge angle, 10-impact frame, 11-suspension cable, 1.1-first lifting hook and 4.1-second lifting hook.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention discloses a hole forming construction process for a coastal drilling pile penetrating through a riprap layer, which is shown in the attached drawings of the specification of the invention, and utilizes a double-steel pile casing structure capable of alternately passing through the riprap layer to cooperate with drilling pile equipment to alternately make slurry and form holes in a riprap block stone area of a seaside breakwater, and during drilling, an outer steel pile casing and an inner steel pile casing of the double-steel pile casing structure alternately make slurry and follow up.
The method comprises the following specific steps: (1) excavating riprap in the sea side breakwater riprap region by using an excavator until the riprap reaches a high level tide position; (2) installing a steel casing structure by using a crane, drilling at a high tide level, and putting down an outer steel casing of the steel casing structure to ensure the perpendicularity and then continuing drilling; (3) slurry is made in an outer steel casing of the steel casing structure, a vibration hammer or a percussion drill bit is utilized to follow the outer steel casing, and when the outer steel casing cannot follow, the inner steel casing is lowered down by a crane; (4) after the inner steel protecting cylinder is put down in place, the inner steel protecting cylinder is followed by a vibration hammer or a percussion drill bit while the inner steel protecting cylinder is followed by slurry making, when the inner steel protecting cylinder cannot follow, the vibration hammer or the percussion drill bit is then used for following the outer steel protecting cylinder, or a crane is used for lifting the inner steel protecting cylinder for a certain distance, the inner steel protecting cylinder is hung on the inner wall of the outer steel protecting cylinder by a hook, the percussion drill bit is put down for operation, after the percussion operation is carried out for a certain depth, the hook between the inner steel protecting cylinder and the outer steel protecting cylinder is removed, the inner steel protecting cylinder is put down to the bottom of a hole, and the percussion drill bit is then used for operation construction, so that the alternate slurry making; (5) when the outer steel protects a section of thick bamboo and pierces through the riprap layer and gets into the fine sand layer of powder, the section of thick bamboo bottom elevation of an inner steel protects a section of thick bamboo and can stably make thick liquid in the lower position of low tide level, stops two steel and protects a section of thick bamboo structure follow-up, gets into conventional drilling stage, pulls out the outer steel after the construction is accomplished and protects a section of thick bamboo and cuts out deformation part reuse, and an inner steel protects a section of thick bamboo and buries in the pile bolck region as permanent. The follow-up depth of the outer steel pile casing is larger than 5m each time, and the follow-up bottom depth of the inner steel pile casing is 1-2m each time. And (3) mounting a steel casing structure by using a crane in the step (2), drilling for 3m at a high tide level, and then putting down an outer steel casing.
The invention discloses a double-steel pile casing structure capable of alternately operating through a riprap layer, which comprises an outer steel pile casing 1, wherein a first reinforcing sleeve 3 and a first edge angle 2 are arranged on the outer steel pile casing 1, a first limiting hole 7 arranged along the radial direction of the outer steel pile casing 1 is arranged on the outer steel pile casing 1, an inner steel pile casing 4 is coaxially arranged in the outer steel pile casing 1, the outer diameter of the inner steel pile casing 4 corresponds to the inner diameter of the first reinforcing sleeve 3, a second reinforcing sleeve 5 and a second edge angle 6 are arranged on the inner steel pile casing 4, a second limiting hole 8 arranged along the radial direction of the inner steel pile casing 4 is arranged on the inner steel pile casing 4, and the inner diameter of the first limiting hole 7 corresponds to the inner diameter of the second limiting hole 8. An edge 9 is provided on the end inner ring of the first reinforcing sleeve 3. The end inner ring of the second reinforcing sleeve 5 is provided with a cutting edge 9. The other end of the outer steel casing 1 is detachably provided with an impact frame 10. The impact frame 10 is formed by welding two groups of section steels which are arranged in parallel and in a crossed mode. The outer steel casing 1 is provided with a mounting groove for mounting the impact frame 10. The inner wall of the outer steel casing 1 is provided with a first lifting hook 1.1, the outer wall of the inner steel casing 4 is provided with a second lifting hook 4.1, and the first lifting hook 1.1 and the second lifting hook 4.1 are connected through a suspension cable 11.
When the invention is used, after the paying-off is measured, the drilling machine is positioned at the position of the placed pile, after about 3m of drilling is carried out at a high tide position, the outer steel casing is put down to ensure the verticality of the outer steel casing, the drilling is continued (in the process, clay and water are required to be put in for slurry preparation under the condition of slurry leakage), and the casing is simultaneously followed (the pile hammer is lifted to 1-2m of the casing opening, the casing following is realized by utilizing the gravity of the pile hammer or the DZ60 vibration hammer is utilized to realize the following, then the welding lengthening is carried out), when the following of the outer steel casing is blocked and the following cannot be carried out, the inner steel casing is followed, the inner steel casing is not more than the outer steel casing, the method is followed with the outer steel casing (because the outer steel casing is difficult to avoid the conditions of deformation and the mouth curling in the lowering process, the inner steel casing is used to ensure the aperture and the like), when the inner steel casing cannot be followed, the outer steel casing is lifted by utilizing the impact frame until the crane is stopped, and then the inner steel casing is lifted to about 1m, the inner steel casing is temporarily fixed on the outer steel casing by using a temporary padlock, a percussion drill on the inner steel casing performs slurry making operation, the operation is about 1m in drilling, the temporary padlock of the inner steel casing is removed, the inner steel casing is placed, the drilling is carried out for 1-2m and then the outer steel casing is followed, the drilling (in the process, because slurry cannot be circulated, a slag ladle is adopted for cleaning holes) is repeated, the construction process is shown in figure 1, the conventional drilling stage is carried out until the inner steel casing penetrates through a riprap layer and enters a fine sand layer (at the moment, the bottom elevation of the inner steel casing is lower than the lowest tide level by about 2-3m) and slurry leakage does not occur any more, the outer steel casing is removed after the construction is finished, the deformation part is cut and recycled, and the inner steel casing is buried in a pile top area as a permanent casing.
It should be understood that the above are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the scope of the present invention.
Claims (9)
1. The utility model provides a be used for coastal to pass stone layer bored pile pore-forming construction technology which characterized in that: the method comprises the steps that a double-steel pile casing structure capable of alternately operating through a riprap layer is matched with drilling pile equipment to alternately make slurry and form holes in a riprap block stone area of the seaside breakwater, and during drilling, an outer steel pile casing and an inner steel pile casing of the double-steel pile casing structure alternately make slurry and follow up; the method comprises the following specific steps:
(1) excavating riprap in the sea side breakwater riprap region by using an excavator until the riprap reaches a high level tide position;
(2) installing a steel casing structure by using a crane, drilling at a high tide level, and putting down an outer steel casing of the steel casing structure to ensure the perpendicularity and then continuing drilling;
(3) slurry is made in an outer steel casing of the steel casing structure, a vibration hammer or a percussion drill bit is utilized to follow the outer steel casing, and when the outer steel casing cannot follow, the inner steel casing is lowered down by a crane;
(4) after the inner steel protecting cylinder is put down in place, the inner steel protecting cylinder is followed by a vibration hammer or a percussion drill bit while the inner steel protecting cylinder is followed by pulp making, when the inner steel protecting cylinder cannot follow, the vibration hammer or the percussion drill bit is then used for following the outer steel protecting cylinder, the inner steel protecting cylinder is lifted for a certain distance by a crane, the inner steel protecting cylinder is hung on the inner wall of the outer steel protecting cylinder by a hook, the percussion drill bit is put down for operation, after the percussion operation is carried out for a certain depth, the hook between the inner steel protecting cylinder and the outer steel protecting cylinder is removed, the inner steel protecting cylinder is put down to the bottom of a hole, and the percussion drill bit is then used for operation construction, so that the alternative pulp making follow;
(5) when the outer steel protects a section of thick bamboo and pierces through the riprap layer and gets into the fine sand layer of powder, the section of thick bamboo bottom elevation of an inner steel protects a section of thick bamboo and can stably make thick liquid in the lower position of low tide level, stops two steel and protects a section of thick bamboo structure follow-up, gets into conventional drilling stage, pulls out the outer steel after the construction is accomplished and protects a section of thick bamboo and cuts out deformation part reuse, and an inner steel protects a section of thick bamboo and buries in the pile bolck region as permanent.
2. The process of claim 1, wherein the process comprises drilling a hole through the riprap layer along the sea, and comprises the following steps: the follow-up depth of the outer steel pile casing is larger than 5m each time, and the follow-up bottom depth of the inner steel pile casing is 1-2m each time.
3. The process of claim 1, wherein the process comprises drilling a hole through the riprap layer along the sea, and comprises the following steps: and (3) mounting a steel casing structure by using a crane in the step (2), drilling for 3m at a high tide level, and then putting down an outer steel casing.
4. The process of claim 1, wherein the process comprises drilling a hole through the riprap layer along the sea, and comprises the following steps: the utility model provides a can pass two steel of flint layer alternate operation and protect a section of thick bamboo structure includes outer steel and protects a section of thick bamboo (1), be provided with first enhancement sleeve (3) and first contained angle (2) on outer steel protects a section of thick bamboo (1), its characterized in that: be provided with on outer steel protects a section of thick bamboo (1) along its radial first spacing hole (7) of arranging, outer steel protects a section of thick bamboo (1) in coaxial being provided with interior steel and protects a section of thick bamboo (4), the external diameter that interior steel protected a section of thick bamboo (4) with the internal diameter of first reinforcement sleeve (3) is corresponding, be provided with second reinforcement sleeve (5) and second cutting edge (6) on interior steel protects a section of thick bamboo (4), be provided with on interior steel protected a section of thick bamboo (4) along its radial spacing hole of second (8) of arranging, the internal diameter of first spacing hole (7) with the internal diameter of the spacing hole of second (8) is corresponding.
5. The process of claim 4, wherein the hole is formed by drilling a pile through a riprap layer along the sea, and the process comprises the following steps: an edge angle (9) is arranged on the inner ring of the end part of the first reinforcing sleeve (3).
6. The process of claim 4, wherein the hole is formed by drilling a pile through a riprap layer along the sea, and the process comprises the following steps: and an edge angle (9) is arranged on the inner ring at the end part of the second reinforcing sleeve (5).
7. The process of claim 4, wherein the hole is formed by drilling a pile through a riprap layer along the sea, and the process comprises the following steps: and the other end of the outer steel casing (1) is detachably provided with an impact frame (10).
8. The process of claim 7, wherein the hole is formed by drilling a pile through a riprap layer along the sea, and the process comprises the following steps: the impact frame (10) is formed by welding two groups of profile steels which are arranged in a parallel and crossed manner; the outer steel casing (1) is provided with a mounting groove for mounting the impact frame (10).
9. The process of claim 4, wherein the hole is formed by drilling a pile through a riprap layer along the sea, and the process comprises the following steps: be provided with first lifting hook (1.1) on the inner wall of outer steel pile casing (1), be provided with second lifting hook (4.1) on the outer wall of interior steel pile casing (4), first lifting hook (1.1) with second lifting hook (4.1) are connected through span wire (11).
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| CN201810194480.8A CN108442362B (en) | 2018-03-09 | 2018-03-09 | Hole forming construction process for coastal drilled pile penetrating riprap layer |
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| CN109208594B (en) * | 2018-08-29 | 2020-11-17 | 中铁大桥局集团有限公司 | Treatment method for steel casing sinking meeting boulder, steel casing structure and drilled pile |
| CN109723059B (en) * | 2018-11-16 | 2024-05-31 | 上海建工二建集团有限公司 | Improved full casing for sand pebble foundation construction and use method thereof |
| CN111926808B (en) * | 2020-07-31 | 2022-08-23 | 中国建筑土木建设有限公司 | Detachable casing structure of deepwater pile foundation and construction method thereof |
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| GB1140697A (en) * | 1966-05-24 | 1969-01-22 | Taisei Corp | Method of building underground concrete walls |
| CN201068569Y (en) * | 2007-03-02 | 2008-06-04 | 周祥 | Pile-driving machine |
| CN103485336B (en) * | 2013-09-30 | 2015-06-24 | 中铁二十局集团有限公司 | Drilling pile drilling construction method of bead-type karst area |
| CN103967032A (en) * | 2014-04-16 | 2014-08-06 | 青岛理工大学 | Double-pile-casing cast-in-situ bored pile for strongly-corrosive saline soil and construction method thereof |
| CN104514219A (en) * | 2014-12-12 | 2015-04-15 | 中铁十九局集团有限公司 | Underwater drilled pile foundation construction system capable of recycling steel casing and construction method thereof |
| CN104988913B (en) * | 2015-05-29 | 2017-12-12 | 王继忠 | A kind of construction method of the carrier pile of long large-diameter pile |
| CN105970918A (en) * | 2016-03-23 | 2016-09-28 | 中铁四局集团钢结构有限公司 | Pile foundation hole forming construction process under large-particle-size cobble sandy soil and severe water seepage geological condition |
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Effective date of registration: 20220221 Address after: No.430011, Jinyinhu Road, Wuhan, Hubei Province Patentee after: CCCC SECOND HARBOR ENGINEERING Co.,Ltd. Patentee after: CCCC Wuhan harbor engineering design and Research Institute Co., Ltd Address before: No.430011, Jinyinhu Road, Wuhan, Hubei Province Patentee before: CCCC SECOND HARBOR ENGINEERING Co.,Ltd. |