CN105604001A - Stiffening core cement-soil tubular pile, construction method and cylindrical rotary stirring drilling tool - Google Patents
Stiffening core cement-soil tubular pile, construction method and cylindrical rotary stirring drilling tool Download PDFInfo
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- CN105604001A CN105604001A CN201610012234.7A CN201610012234A CN105604001A CN 105604001 A CN105604001 A CN 105604001A CN 201610012234 A CN201610012234 A CN 201610012234A CN 105604001 A CN105604001 A CN 105604001A
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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
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
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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
- E02D5/50—Piles comprising both precast concrete portions and concrete portions cast in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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Abstract
The invention belongs to the construction industry and particularly relates to a stiffening core cement-soil tubular pile, a construction method and a cylindrical rotary stirring drilling tool. According to the structure, a cement-soil tubular pipe body b is longer than a cored pile a, is as long as the cored pile a and is shorter than the cored pile a, and the center of the cement-soil tubular pile is soil. By means of the stiffening core cement-soil tubular pile, the construction method and the cylindrical rotary stirring drilling tool, the diameter of the cylindrical cement-soil pile can be larger. The completed pile with defects and with bearing force not meeting the design requirement can be reinforced through the method, the formed stiffening core cement-soil tubular pile is high in bearing force, uplift resistance and shear resistance, high in construction speed and low in cost, and people do not need to worry that the cored pile can not be inserted in the formed tubular pipe.
Description
Technical field
The invention belongs to building trade, particularly the stake of a kind of stiff-core cement soil cylinder and construction method and tubular are revolved and are stirred drilling tool.
Background technology
Current strength core pile driving construction is most of for first forming stud, insert again core stake and form composite pile, particularly in soil cement, insert core stake, sometimes because lock pin poor timing, can cause lock pin difficulty, June 2 2010 applying date, application number is 201010189668.7, in " core filling tubular pile cementitious composite foundation pile and construction method ", announce a kind of composite foundation pile construction method, this construction method is to utilize high-pressure stirring fusion method to form soil cement stud, before cement initial set, static(al) is pressed into pile tube and fills out core again, pile tube has been pressed into early and has had a lot of slurries and overflow, press evening and pressed less than desired depth. the applying date is on August 19th, 2010, application number is 201010257594.6, the construction method that " with combined cement earth pile and construction method and the construction equipment of core stake " this patent is announced is to insert steel sheath in Soil-cement pile center, in steel sheath, there is steel reinforcement cage, then concrete perfusion, there is equally above-mentioned shortcoming, in addition in the time extracting steel sheath, between core stake and stud, to leave space, cause contact bad, the quality of impact stake. the applying date is on September 27th, 2008, application number is 200810304721.6, " a kind of major diameter cast-in-place concrete thin-walled tooth-shaped tubular stake, pile-forming apparatus and pile forming method " in announced and utilize special plant equipment in ground, to form major diameter tooth-shaped tubular hole, then configuration reinforcement cage in cylinder hole, and concrete perfusion and the thin-walled tooth-shaped tubular stake of moulding on the spot, what do not configure steel reinforcement cage is called the stake of the cast-in-place plain concrete thin-walled tooth-shaped tubular of major diameter, be called for short the stake of plain concrete cylinder, the hollow tubular concrete pile body in middle part that this cast-in-site forms above, sometimes concrete can produce segregation, reveal muscle, the phenomenons such as broken pile, be difficult to detect by methods such as small strains the defect of its pile quality, therefore when as building pile foundation, there is certain potential safety hazard. the applying date is on August 28th, 2013, application number is 201310381595.5, in " constructing device and the construction method of the stake of a kind of the cast-in-place strength core of all soil cements ", announce a kind of by interior immersed tube, outer immersed tube, precast pile tip and high-pressure mortar spraying pipe composition, the surface of precast pile tip is provided with the outer immersed tube stopper slot of top, location pipe-sinking device, interior immersed tube stopper slot, prop up plate washer embedded groove and antitorque limiting plate, in precast pile tip, establish the duct of passing through for high-pressure mortar spraying pipe, evenly be laid with the high-pressure mortar spraying pipe of bottom band nozzle along hoop at the lateral wall of interior immersed tube, the constructing device site operation of this construction method makes interior immersed tube, outer immersed tube, numerous and diverse while propping up baffle plate and precast pile tip contraposition, each stake will be lost a precast pile tip in hand-hole in addition, cause the waste of building materials. the applying date is on October 10th, 2008, application number is 200810201011.0, " improving the method for tubular pile end load and withdrawal resistance ", and the method is after pile tube moulding, only realize increase withdrawal resistance by set up resistance to plucking steel strand wires in pile tube, its shortcoming is only to have increased an enlarged footing, and the bearing capacity and the withdrawal resistance amplitude that improve stake are limited, and between at the bottom of enlarged footing and pile tube, in the time that pile tube bears withdrawal resistance, be very easy to both to pull open, withdrawal resistance is declined suddenly, cause the accident.
Summary of the invention
The object of the invention is to overcome above-mentioned technical deficiency, provide that a kind of construction method is simple, speed of application is fast, save building materials, improve the stiff-core cement soil cylinder stake of bearing capacity, withdrawal resistance and shear resistance of stake and construction method and tubular revolves and stir drilling tool.
The technical scheme that technical solution problem of the present invention adopts is: the stake of stiff-core cement soil cylinder and construction method and tubular are revolved the stiff-core cement soil cylinder stake of stirring in drilling tool and had following architectural feature: the stake of soil cement cylinder is grown up in core stake, the stake of soil cement cylinder is long equals core stake, the stake of soil cement cylinder is long is less than core stake, center is native soil cement cylinder stake, the stake of stiff-core cement soil cylinder and construction method and tubular are revolved the tubular of stirring in drilling tool and are revolved that to stir drilling tool be following design feature: revolve in tubular the outside of stirring drilling tool and establish a vertical shotcrete pipe, establish again a vertical shotcrete pipe according to designing requirement symmetry, the lower end of a vertical shotcrete pipe is provided with vertical shotcrete pipe nozzle therein, above vertical shotcrete pipe nozzle with vertical shotcrete pipe vertical direction and be communicated with vertical shotcrete pipe and pass tubular and revolve and stir drilling tool wall and be provided with horizontal shotcrete pipe, horizontal shotcrete pipe is provided with interior whitewashing mouth and outer whitewashing mouth, revolving on the wall that stirs drilling tool symmetry in the tubular at adjacent horizontal shotcrete pipe place establishes outer sidespin and stirs the wing, outer sidespin pull the wing be located at being rotated in the forward of outer whitewashing mouth meet cubic metre of earth to, the outer sidespin of a side stirs and in the wing, makes hollow shape therein, in hollow, be provided with back-moving spring, outside back-moving spring, connection activity inward turning is stirred wing, inward turning stir wing be located at being rotated in the forward of interior whitewashing mouth meet cubic metre of earth to, outer whitewashing mouth and vertical whitewashing mouth are established in the vertical shotcrete pipe of another root bottom, tubular is revolved the lower end of stirring drilling tool and is made and be with several uniform square slot forms, on each square tooth lower surface, clamp welding and be provided with bore bit, revolve to stir in the tubular above square teeth groove and on drilling tool wall, be evenly provided with several slurry holes of crossing,
Adopt above-mentioned tubular to revolve to stir drilling tool construction to form the method for stiff-core cement soil cylinder stake as follows:
Method A: one, first form core stake, core stake has one of following form: the built pile of pile for prestressed pipe, ring stake, solid square pile, hollow square pile, compound prefabricated pile, steel-pipe pile, cast-in-situ concrete poured stake, various special-shaped pile body bored concrete pile, composite filling pile, prefabricated pile and bored concrete pile etc., two, the tubular that diameter is greater than to core stake diameter is revolved and is stirred drilling tool spray the function debugging such as to stir good, makes its concentric alignment core stake, leveling rig, and adjusting tubular revolves the perpendicularity of stirring drilling tool, three, start rig, tubular is revolved and stir drilling tool rotary drilling, the interior whitewashing mouth of the horizontal shotcrete pipe below vertical shotcrete pipe and outer whitewashing mouth enter when underground or reach a top mark when high, start band inward turning and stir the vertical injection of wing one side and inner side, function is stirred in revolving of outside, the nozzle that utilizes vertical shotcrete pipe lower end is to media such as vertical high-pressure injection cement mortars in stratum, make its cutting soil, leading emulsification, cooling drill bit, be beneficial to when creeping into, increase the concentration of slurries in soil cement, vertical whitewashing is also for booster action is played in the radially whitewashing in inner side and outside, churning should adopt single tube according to churning parameter and the strata condition of design, one of two-tube or three pipe churnings, stir and adopt wet method to stir or dry stirring, utilize in horizontal shotcrete pipe whitewashing mouth and outer whitewashing mouth that the materials such as slurries are revolved and stir the soil body and the outside soil body inside drilling tool and spray simultaneously to tubular, tubular is revolved stir the soil body and the outside soil body inside drilling tool to form soil cement simultaneously, according to designing requirement and strata condition, function is stirred in the spray that simultaneously starts opposite side shotcrete pipe, the material such as slurries or dry powder is revolved to stir in the outside soil body of drilling tool and the bottom soil body to tubular and spray, until creep into projected depth, four, rotating and upgrading tubular revolves and stirs drilling tool, continue the media such as slurries to revolve and stir drilling tool to spraying in stratum, stirring by tubular, repeating three, four steps according to the full section of designing requirement or local segment strengthens revolving and stirs soil cement intensity and uniformity texts, revolve rising, the decrease speed of stirring drilling tool by designing requirement adjustment churning pressure and tubular, make to revolve the soil cement enlarged diameter of stirring drilling tool outside, the local branch shape soil cement that forms, five, revolve and stir drilling tool and revolve for the last time and stir when spraying the inside and outside whitewashing mouth of horizontal shotcrete pipe of extracting earth's surface or drilling tool and reaching the predetermined absolute altitude in stake top when tubular, close to revolve and stir ejection function, the soil cement cylinder stake of formation is grown up in core stake and is wrapped up that core stake, the stake of soil cement cylinder are long to be equaled core stake and wrap up the long stiff-core cement soil cylinder stake that is less than core stake part and wraps up core stake of core stake, the stake of soil cement cylinder, if six, when core stake pile tube, broken after pile crown according to designing requirement, in pile tube, put only pallet and steel reinforcement cage concrete perfusion, complete the follow-up construction of stake, seven, when utilizing precast hollow pile tube for core stake, and while being used as uplift pile, construction should be pile tube back cover when pile tube, bind, after pile, opening pile tube binds, with the one end such as steel hinge line or reinforcing bar connect a simple and easy steel part that can only descend can not go up to pile tube inner bottom part, and pouring concrete pile core, form the uplift pile of stiff-core cement soil cylinder stake formula,
Method B: the tubular that, diameter is greater than to core stake diameter is revolved and stirred drilling tool, stirs after function at the inside and outside sidespin that mixes up vertical injection and horizontal shotcrete pipe, align piles position, and leveling rig, adjusts tubular and revolves the perpendicularity of stirring drilling tool, two, start rig, tubular is revolved and stir drilling tool rotary drilling, after the interior whitewashing mouth of horizontal shotcrete pipe and outer whitewashing mouth bury, start revolving of a side shotcrete pipe and stir function, utilize vertical high-pressure injection, to media such as vertical high-pressure injection cement mortars in stratum, make its cutting soil, leading emulsification, cooling drill bit is beneficial to and creeps into, utilize horizontal shotcrete pipe in, outer whitewashing mouth is sprayed onto the materials such as slurries to revolve simultaneously stirs in drilling tool, in the soil layer of outside, make it form soil cement, according to designing requirement, interior whitewashing mouth whitewashing amount is reduced, stir and cancel inward turning and stir wing and interior whitewashing mouth until do not spray, only having the nozzle of vertical shotcrete pipe lower end and outside horizontal shotcrete pipe whitewashing mouth to spray to revolve stirs, according to designing requirement and formation condition, function is stirred in the spray that simultaneously starts the vertical shotcrete pipe of opposite side, the materials such as slurries dry powder are revolved to stir in the outside soil body of drilling tool and the bottom soil body to tubular and spray, until projected depth, three, rotating and upgrading tubular revolves and stirs drilling tool, continue the materials such as slurries to spray, stir in stratum, according to designing requirement and formation condition, repeat two, three steps in full section or local segment, strengthen revolving stirring soil cement quality and effect, adjust churning pressure and revolve by designing requirement and stir drilling tool and rise and decrease speed, tubular is revolved stir cement earth pile footpath outside drilling tool to be strengthened, form a local plate-like, four, revolve and stir drilling tool and revolve for the last time to stir and spray while extracting earth's surface when tubular, close to revolve and stir ejection function, forming core is the soil cement cylinder stake of soil or low-strength cement soil, and this can use as the water-seal pile in the flexible pile of composite foundation or water-stop curtain, five, in the time of the rigidity stake as in compressive pile, uplift pile, composite foundation, rigidity support pile and the stake of rigidity water-stop curtain, before concrete initial set, carry out one of following core pile material and construction method and carry out core pile driving construction, complete stiff-core cement soil cylinder pile driving construction, (1), prefabricated stake center pile driving construction: adopt static pressure, vibration, hammering method that prefabricated pile is inserted into projected depth, prefabricated stake center stake adopts one of following form: pile for prestressed pipe, ring stake, solid pile, hollow square pile, steel-pipe pile, I-steel etc., (2), the construction of bored concrete pile core stake: adopt the method construction core stake of long spiral press pouring concrete, according to the rearmounted steel reinforcement cage of designing requirement, the method construction core stake that screw rod is squeezed, can form threaded special-shaped core stake or the stake of screw thread soil compaction straight rod type bored concrete pile core, according to the rearmounted steel reinforcement cage of designing requirement, hammering inner tube drives outer tube or hammering soil, and the method for heavy outer tube forms stake hole, extracts inner tube or interior hammer, puts into steel reinforcement cage, and concrete perfusion carries out core pile driving construction, first be pressed into, shake into or be driven into the steel pipe of bottom band flapper pile tip or precast pile tip, putting into steel reinforcement cage, then concrete perfusion, extract outer tube, carry out core pile driving construction, soil cement cylinder stake initial set reaches after some strength cannot be when being pressed into vibration hammering method and inserting core stake, adopt reverse circulation to fetch earth, revolve and take soil, punching and capture soil, percussion drilling one of mode such as fetch earth and carry out pore-forming, to projected depth, put into steel reinforcement cage, then carry out subaqueous concreting and carry out core pile driving construction.
The invention has the beneficial effects as follows: the stake of stiff-core cement soil cylinder and construction method and tubular are revolved and stirred drilling tool and can make tubular cement earth pile diameter larger, because soil cement cylinder stake mid portion is that core is more saved material, the present invention has changed and conventional first form cement earth pile and insert the strength core pile construction method of core stake again in addition, creationary realization first forms construct the again strength core pile construction method of cement earth pile of core stake, the stake that utilizes the method not meet design requirement to completed defectiveness and bearing capacity, carry out consolidation process, without increasing stake number and strengthening cushion cap, therefore save duration and cost, in the time adopting rear lock pin, because cement earth pile core is soil or low-strength cement soil, make lock pin technique easier, the stiff-core cement soil cylinder pile bearing capacity forming, extraction-resistant behavior is high, shear resistance is strong, speed of application is fast, cost is low, insert the situation of not entering without worrying core stake.
Brief description of the drawings
Illustrate with embodiment below in conjunction with accompanying drawing.
Fig. 1 is that the stake of soil cement cylinder is grown up in core stake form figure.
Fig. 2 is the long core stake form figure that equals of soil cement cylinder stake.
Fig. 3 is the long core stake form figure that is less than of soil cement cylinder stake.
Tu4Shi center is native soil cement cylinder stake.
Fig. 5 is that the stake of stiff-core cement soil cylinder and construction method and tubular are revolved and stirred drilling tool structure figure.
Fig. 6 is the I place enlarged drawing of Fig. 5.
In figure, the stake of a-core; The stake of b-soil cement cylinder; C-soil; 1-tubular is revolved and is stirred drilling tool; 1-1-crosses slurry hole; 1-2-teeth groove; The vertical shotcrete pipe of 2-; The vertical shotcrete pipe nozzle of 2-1-; The horizontal shotcrete pipe of 3-; The 3-1-mouth of whitewashing outward; Whitewashing mouth in 3-2-; The outer sidespin of 4-stirs the wing; 5-bore bit; 6-activity inward turning is stirred wing; 7-back-moving spring; D-tubular is revolved and is stirred drilling tool interior diameter.
Detailed description of the invention
Embodiment, with reference to accompanying drawing 1,2, the stake of stiff-core cement soil cylinder and construction method and tubular revolve that to stir drilling tool be to revolve on the excircle that stirs drilling tool 1 symmetry in tubular to be fixed with tubular and to revolve and stir, 2, on the lower end of vertical shotcrete pipe 2, be provided with vertical shotcrete pipe nozzle 2-1. above vertical shotcrete pipe nozzle 2-1 with vertical shotcrete pipe 2 vertical direction and be communicated with vertical shotcrete pipe 2 and pass tubular and revolve and stir drilling tool 1 wall and be provided with horizontal shotcrete pipe 3, horizontal shotcrete pipe 3 is provided with interior whitewashing mouth 3-2 and outer whitewashing mouth 3-1, vertical shotcrete pipe 2 can complete vertical, horizontal whitewashing function simultaneously, revolves and on the wall that stirs drilling tool 1, is arranged with outer sidespin and stirs the wing in the tubular at adjacent horizontal shotcrete pipe 3 places, 4, the outer sidespin of a side stirs in the wing 4 and makes hollow shape therein, stir wing 4 at interior sidespin and be provided with back-moving spring 7 in hollow, stir wing 6 in back-moving spring 7 outside connection activity inward turnings, when activity inward turning is stirred wing 6 in the time running into the obstacles such as core stake a, under back-moving spring 7 effects, inward turning is stirred wing 6 automatic retractions, obstacle later inward turning stirs wing 6 and automatically resets, having avoided activity inward turning to stir wing 6 and core stake a etc., obstacle is rigid contacts, tubular is revolved the lower end of stirring drilling tool 1 and is evenly made and be with several square teeth groove 1-2 shapes, on each square tooth lower surface, clamp welding and be provided with more than two bore bit 5, bore bit 5 reduces the Radial resistant force of drilling tool, tubular above square teeth groove 1-2 is revolved even distance on the wall that stirs drilling tool 1 and is provided with several slurry hole 1-1 of mistake, crossing slurry hole 1-1 can make to revolve in the process of stirring tubular and revolve and stir drilling tool wall inner side, the slurries in outside are communicated with, reach concentration of slurry and press equilibrium of forces.
Adopt above-mentioned tubular to revolve to stir drilling tool form stiff-core cement soil cylinder pile construction method embodiment mono-: 1, adopt multiple material and construction method first to make the core stake a with one of following form: the core stake of the features such as pile for prestressed pipe, ring stake, solid square pile, hollow square pile, steel-pipe pile, compound prefabricated pile. the core stake of mentioned kind also can adopt cast-in-situ concrete poured stake, and bored concrete pile is special-shaped pile body bored concrete pile, and composite filling pile can also be the built pile of prefabricated pile and bored concrete pile. built pile has following various ways: top is that prefabricated pile, bottom are bored concrete pile, top is that bored concrete pile, bottom are prefabricated pile, or outside is that bored concrete pile, inside are prefabricated pile, outside is that Prefabricated hollow pile, inside are bored concrete pile, 2, utilize the rig with spinfunction, diameter d is greater than to more than core stake diameter 10cm tubular revolves and stirs drilling tool 1, interior whitewashing mouth 3-2 and outer whitewashing mouth 3-1 on the good vertical shotcrete pipe 2 of debugging and horizontal shotcrete pipe 3 below thereof, after debugging is normal, tubular is revolved and stirred drilling tool 1 concentric alignment core stake, leveling rig, revolves itself and tubular to stir drilling tool 1 to keep vertical, carries out the preparation of construction work of creeping into, whitewashing, 3, start rig, tubular is revolved stir drilling tool 1 to creep into downwards, when rotary drilling is to inner side and outer side nozzle 3-2, after 3-1 buries or while arriving the predetermined absolute altitude in stake top, start the ejection function of vertical shotcrete pipe 2, inner side and outer side spray are stirred function, by the vertical high-pressure injection cement mortar of vertical shotcrete pipe nozzle 2-1 or with the composite material of air, play cutting soil, the effect of leading emulsification, when cooling drill bit, reduce to creep into resistance, be beneficial to and creep into, the activity inward turning of utilization is stirred wing and outer sidespin and is stirred the wing 4 material spraying is fully stirred, stir and can be divided into again wet method stirring and dry stirring, the materials such as slurries are revolved to inner side and the outside of stirring drilling tool 1 from tubular to be ejected into soil layer simultaneously, tubular is revolved stir the soil body of inner side of drilling tool 1 and tubular to be revolved to stir the soil body in drilling tool 1 outside to form soil cement simultaneously, until creep into projected depth, 4, rotate and upgrade tubular and revolve and stir drilling tool 1, continue the materials such as cement grout to stir injection to spraying and revolve in stratum, according to designing requirement, section repeats to spray or local segment repeats injection entirely. on pile crown, in certain limit section, good sandy gravel section or core stake bottom stage certain limit, all can repeat to spray, strengthen revolving of soil cement and stir effect, revolve lifting, the decrease speed of stirring drilling tool 1 by regulating churning pressure and tubular, tubular is revolved stir the cement earth pile footpath in drilling tool 1 outside to be strengthened, form a plate-like soil cement, 5, tubular revolve stir drilling tool 1 revolve for the last time stir spray time, as the inner nozzle 3-2 on horizontal shotcrete pipe 3, outer nozzle 3-1, to reach a top mark high or extract before ground surface, close and spray and churning function, the length that the length that forms soil cement cylinder stake b is greater than core stake a and wraps up core stake a, soil cement cylinder stake b equals core stake a and wraps up the stiff-core cement soil cylinder stake that the length of core stake a, soil cement cylinder stake b is less than core stake a and partly wraps up core stake a, 6, in the time that core stake a adopts pile tube, according to designing requirement, broken after pile crown, in pile tube, put into pallet and steel reinforcement cage, and concrete perfusion, the follow-up construction of stake completed.
Embodiment bis-, 1, the tubular that diameter is greater than to core stake diameter are revolved and are stirred drilling tool 1, well vertically spray and the inside and outside sidespin of horizontal shotcrete pipe stirs after function at mode, and align piles position, leveling rig, adjustment tubular is revolved the perpendicularity of stirring drilling tool 1, 2, start rig, tubular is revolved and stir drilling tool 1 rotary drilling, after the interior whitewashing mouth 3-2 of horizontal shotcrete pipe 3 and outer whitewashing mouth 3-1 bury, start revolving of a side shotcrete pipe and stir function, utilize vertical high-pressure injection, to media such as vertical high-pressure injection cement mortars in stratum, make its cutting soil, leading emulsification, cooling drill bit is beneficial to and creeps into, utilize horizontal shotcrete pipe 3 in, outer whitewashing mouth 3-2, 3-2 is sprayed onto the materials such as slurries to revolve simultaneously stirs in drilling tool, in the soil layer of outside, make it form soil cement, according to designing requirement, interior whitewashing mouth 3-2 whitewashing amount is reduced, stir and cancel inward turning and stir wing 6 and interior whitewashing mouth 3-2 until do not spray, only having the outer whitewashing mouth 3-1 of the horizontal shotcrete pipe 3 of vertical shotcrete pipe nozzle 2-1 and outside of vertical shotcrete pipe 2 lower ends to spray to revolve stirs, according to designing requirement and formation condition, function is stirred in the spray that can simultaneously start the vertical shotcrete pipe 2 of opposite side, the materials such as slurries dry powder are revolved to stir in the outside soil body of drilling tool and the bottom soil body to tubular and spray, until projected depth, 3, rotating and upgrading tubular revolves and stirs drilling tool 1, continue the media such as slurries to spray, stir in stratum, according to designing requirement and formation condition, repeat 2,3 steps in full section or local segment, strengthen revolving stirring soil cement quality and effect, adjust churning pressure and revolve by designing requirement and stir drilling tool rising and decrease speed, tubular is revolved and stir drilling tool 1 outside cement earth pile enlarged diameter, form a local plate-like, 4, revolve and stir drilling tool and revolve for the last time to stir and spray while extracting earth's surface when tubular, close to revolve and stir ejection function, forming core is the soil cement cylinder stake b of soil or low-strength cement soil, and this can use as the water-seal pile in the flexible pile of composite foundation or water-stop curtain, 5, when as building compressive pile, uplift pile, when rigidity stake in composite foundation, rigidity support pile and the stake of rigidity water-stop curtain, before concrete initial set, by one of following core pile material and construction method, carry out core pile driving construction, form the stake of stiff-core cement soil cylinder. the construction of 5-1, prefabricated stake center stake: lifting prefabricated pile, concentric alignment soil cement cylinder stake b, adjust the perpendicularity of prefabricated pile, adopt one of methods such as static pressure, vibration, hammering that prefabricated pile is inserted into projected depth, prefabricated stake center stake a can adopt one of following stake form: (1), pile for prestressed pipe, (2) ring stake, (3) solid pile, (4) hollow square pile, (5) steel-pipe pile, (6) i shaped steel etc. 5-2, in situ concrete pile core pile construction method: (1) adopts spiral to press the method construction core stake of concrete perfusion, according to the rearmounted steel reinforcement cage of designing requirement, (2) adopt the squeezed method of screw thread construction core stake a or form threaded core stake a, according to designing requirement, after insert steel reinforcement cage, (3) adopt hammering inner tube drive outer tube sinking or hammering soil back-pressure outer tube, vibration to press a method formation hole for outer tube, extract after inner tube or interior hammer, place steel reinforcement cage, concrete perfusion is extracted outer tube and is carried out core stake a construction, (4) adopt and be first pressed into, shake into or be driven into the steel pipe of bottom with flapper pile tip or precast pile tip, put into steel reinforcement cage, concrete perfusion, open and pull out that outer tube carries out core pile driving construction, (5) reach after some strength in soil cement initial set, adopt the methods such as static pressure, vibration and hammering, can not insert core stake time, can adopt positive and negative circulation boring extracting soil, revolve take soil, punching capture soil, impact dropping hammer fetch earth form stake a hole, lay steel reinforcement cage, carry out subaqueous concreting and complete core pile driving construction.
Claims (3)
1. the stake of stiff-core cement soil cylinder and construction method and tubular are revolved a stiff-core cement soil cylinder stake of stirring in drilling tool, it is characterized in that having following structure: soil cement cylinder stake b grows up in core stake a; The long core stake a that equals of soil cement cylinder stake b; The long core stake a that is less than of soil cement cylinder stake b; Center is native soil cement cylinder stake.
2. stiff-core cement soil cylinder according to claim 1 stake and construction method and tubular are revolved and are stirred drilling tool, it is characterized in that adopting above-mentioned tubular to revolve and stir that drilling tool construction forms the method for stiff-core cement soil cylinder stake as follows: method A:, first form core stake a, core stake a has one of following form: the built pile of pile for prestressed pipe, ring stake, solid square pile, hollow square pile, compound prefabricated pile, steel-pipe pile, cast-in-situ concrete poured stake, various special-shaped pile body bored concrete pile, composite filling pile, prefabricated pile and bored concrete pile etc., two, the tubular that diameter is greater than to core stake a diameter is revolved and is stirred drilling tool (1) spray and stir and wait function debugging good, makes its concentric alignment core stake a, leveling rig, and adjustment tubular is revolved the perpendicularity of stirring drilling tool, three, start rig, tubular is revolved and stir drilling tool (1) rotary drilling, the interior whitewashing mouth (3-2) of the horizontal shotcrete pipe (3) below vertical shotcrete pipe (2) and outer whitewashing mouth (3-1) enter when underground or reach a top mark when high, start band inward turning and stir the vertical injection of wing one side and inner side, function is stirred in revolving of outside, the nozzle (2-1) that utilizes vertical shotcrete pipe (2) lower end is to media such as vertical high-pressure injection cement mortars in stratum, churning should adopt single tube according to churning parameter and the strata condition of design, one of two-tube or three pipe churnings, stir and adopt wet method to stir or dry stirring, utilize in horizontal shotcrete pipe (3) whitewashing mouth (3-2) and outer whitewashing mouth (3-1) that the materials such as slurries are revolved and stir the soil body and the outside soil body inside drilling tool (1) and spray simultaneously to tubular, tubular is revolved stir drilling tool (1) the inner side soil body and the outside soil body to form soil cement simultaneously, according to designing requirement and strata condition, function is stirred in the spray that simultaneously starts opposite side shotcrete pipe, the material such as slurries or dry powder is revolved to stir in the outside soil body of drilling tool (1) and the bottom soil body to tubular and spray, until creep into projected depth, four, rotating and upgrading tubular revolves and stirs drilling tool (1), continue the media such as slurries to revolve and stir drilling tool to spraying in stratum, stirring by tubular, repeating three, four steps according to the full section of designing requirement or local segment strengthens revolving and stirs soil cement intensity and uniformity texts, revolve rising, the decrease speed of stirring drilling tool by designing requirement adjustment churning pressure and tubular, make to revolve the soil cement enlarged diameter of stirring drilling tool outside, the local branch shape soil cement that forms, five, revolve and stir drilling tool (1) and revolve for the last time and stir when spraying inside and outside whitewashing mouth (3-2), (3-1) of horizontal shotcrete pipe (3) that extracts earth's surface or drilling tool and reaching the predetermined absolute altitude in stake top when tubular, close to revolve and stir ejection function, the soil cement cylinder stake of formation is grown up in core stake a and is wrapped up that core stake a, soil cement cylinder stake b are long to be equaled core stake a and wrap up that core stake, soil cement cylinder stake b are long is less than the stiff-core cement soil cylinder stake that core stake a part is wrapped up core stake a, if six, when core stake a pile tube, broken after pile crown according to designing requirement, in pile tube, put only pallet and steel reinforcement cage concrete perfusion, complete the follow-up construction of stake, seven, when utilizing precast hollow pile tube for core stake a, and while being used as uplift pile, construction should be pile tube back cover when pile tube, bind, after pile, opening pile tube binds, with the one end such as steel hinge line or reinforcing bar connect a simple and easy steel part that can only descend can not go up to pile tube inner bottom part, and pouring concrete pile core, form the uplift pile of stiff-core cement soil cylinder stake formula, method B: the tubular that, diameter is greater than to core stake diameter is revolved and stirred drilling tool (1), stirs after function at the inside and outside sidespin that mixes up vertical injection and horizontal shotcrete pipe, align piles position, and leveling rig, adjusts tubular and revolves the perpendicularity of stirring drilling tool (1), two, start rig, tubular is revolved and stir drilling tool (1) rotary drilling, after the interior whitewashing mouth (3-2) of horizontal shotcrete pipe (3) and outer whitewashing mouth (3-1) bury, start revolving of a side shotcrete pipe and stir function, utilize vertical high-pressure injection, to media such as vertical high-pressure injection cement mortars in stratum, make its cutting soil, leading emulsification, cooling drill bit is beneficial to and creeps into, utilize horizontal shotcrete pipe (3) in, outer whitewashing mouth (3-2), (3-1) materials such as slurries are sprayed onto to revolve simultaneously stir in drilling tool, in the soil layer of outside, make it form soil cement, according to designing requirement, interior whitewashing mouth (3-2) whitewashing amount is reduced, stir and cancel inward turning and stir wing (6) and interior whitewashing mouth (3-2) until do not spray, only having the horizontal shotcrete pipe whitewashing mouth in the nozzle (2-1) of vertical shotcrete pipe (2) lower end and outside (3-1) to spray to revolve stirs, according to designing requirement and formation condition, function is stirred in the spray that simultaneously starts the vertical shotcrete pipe of opposite side (2), the materials such as slurries dry powder are revolved to stir in the outside soil body of drilling tool (1) and the bottom soil body to tubular and spray, until projected depth, three, rotating and upgrading tubular revolves and stirs drilling tool (1), continue the materials such as slurries to spray, stir in stratum, according to designing requirement and formation condition, repeat two, three steps in full section or local segment, strengthen revolving stirring soil cement quality and effect, adjust churning pressure and revolve by designing requirement and stir drilling tool (1) rising and decrease speed, tubular is revolved and stir the cement earth pile footpath increasing of drilling tool (1) outside, form the local plate-like of propping up, four, revolve and stir drilling tool (1) and revolve for the last time to stir and spray while extracting earth's surface when tubular, close to revolve and stir ejection function, forming core is the soil cement cylinder stake of soil or low-strength cement soil, and this can use as the water-seal pile in the flexible pile of composite foundation or water-stop curtain, five, in the time of the rigidity stake as in compressive pile, uplift pile, composite foundation, rigidity support pile and the stake of rigidity water-stop curtain, to before concrete initial set, carry out one of following core stake a material and construction method and carry out core stake a construction, complete stiff-core cement soil cylinder stake b construction, (1), prefabricated stake center stake a construction: adopt static pressure, vibration, hammering method that prefabricated pile is inserted into projected depth, prefabricated stake center stake adopts one of following form: pile for prestressed pipe, ring stake, solid pile, hollow square pile, steel-pipe pile, I-steel etc., (2), the construction of bored concrete pile core stake: adopt the method construction core stake of long spiral press pouring concrete, according to the rearmounted steel reinforcement cage of designing requirement, the method construction core stake a that screw rod is squeezed, can form threaded special-shaped core stake a or screw thread soil compaction straight rod type bored concrete pile core stake a, according to the rearmounted steel reinforcement cage of designing requirement, hammering inner tube drives outer tube or hammering soil, and the method for heavy outer tube forms stake hole, extracts inner tube or interior hammer, puts into steel reinforcement cage, and concrete perfusion carries out core stake a construction, first be pressed into, shake into or be driven into the steel pipe of bottom band flapper pile tip or precast pile tip, putting into steel reinforcement cage, then concrete perfusion, extract outer tube, carry out core stake a construction, soil cement cylinder stake b initial set reaches after some strength cannot be when being pressed into vibration hammering method and inserting core stake, adopt reverse circulation to fetch earth, revolve and take soil, punching and capture soil, percussion drilling one of mode such as fetch earth and carry out pore-forming, to projected depth, put into steel reinforcement cage, then carry out subaqueous concreting and carry out core pile driving construction.
3. stiff-core cement soil cylinder according to claim 1 stake and construction method and tubular are revolved and are stirred drilling tool, it is characterized in that tubular revolves that to stir drilling tool be following design feature: revolve in tubular the outside of stirring drilling tool (1) and establish a vertical shotcrete pipe (2), establish again a vertical shotcrete pipe (2) according to designing requirement symmetry, the lower end of a vertical shotcrete pipe (2) is provided with vertical shotcrete pipe nozzle (2-1) therein, in the top of vertical shotcrete pipe nozzle (2-1) and vertical shotcrete pipe (2) vertical direction and be communicated with vertical shotcrete pipe (2) and pass tubular and revolve and stir drilling tool (1) wall and be provided with horizontal shotcrete pipe (3), horizontal shotcrete pipe (3) is provided with interior whitewashing mouth (3-2) and outer whitewashing mouth (3-1), the tubular of locating at adjacent horizontal shotcrete pipe (3) is revolved on the wall that stirs drilling tool (1) symmetry and is established outer sidespin and stir the wing (4), outer sidespin pull the wing (4) be located at being rotated in the forward of outer whitewashing mouth (3-1) meet cubic metre of earth to, the outer sidespin of a side stirs in the wing (4) and makes hollow shape therein, in hollow, be provided with back-moving spring (7), stir wing (6) in back-moving spring (7) outside connection activity inward turning, inward turning stir wing (6) be located at being rotated in the forward of interior whitewashing mouth (3-2) meet cubic metre of earth to, another root is vertically whitewashed, and outer whitewashing mouth (3-1) is established in (2) pipe bottom and the mouth (2-1) of vertically whitewashing, tubular is revolved the lower end of stirring drilling tool (1) and is made and be with several uniform square teeth groove (1-2) shape, on each square tooth lower surface, clamp welding and be provided with bore bit (5), revolve to stir in the tubular of square teeth groove (1-2) top and on drilling tool (1) wall, be evenly provided with several slurry holes (1-1) of crossing.
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| CN201610012234.7A CN105604001B (en) | 2016-01-11 | 2016-01-11 | Drilling tool is stirred in the stake of stiff-core cement soil cylinder and the rotation of construction method and tubular |
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| CN201610012234.7A CN105604001B (en) | 2016-01-11 | 2016-01-11 | Drilling tool is stirred in the stake of stiff-core cement soil cylinder and the rotation of construction method and tubular |
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| CN107012868A (en) * | 2017-04-26 | 2017-08-04 | 王景军 | A kind of prefabricated screw pile construction method |
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| CN113653449B (en) * | 2021-10-18 | 2021-12-28 | 山东水利建设集团有限公司 | Environment-friendly cement high pressure spouts device soon for prevention of seepage construction |
| CN114319351A (en) * | 2022-01-13 | 2022-04-12 | 山东高速集团有限公司创新研究院 | Super-large-diameter cement soil tubular pile construction device and construction method |
| CN114250767A (en) * | 2022-02-09 | 2022-03-29 | 中建三局集团北京有限公司 | Multi-shaft pressure grouting cement-soil pile construction process based on solid waste utilization |
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