CN102392441A - Composite crack control prestressed concrete big tube pile and manufacturing method thereof - Google Patents
Composite crack control prestressed concrete big tube pile and manufacturing method thereof Download PDFInfo
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- CN102392441A CN102392441A CN2011102115025A CN201110211502A CN102392441A CN 102392441 A CN102392441 A CN 102392441A CN 2011102115025 A CN2011102115025 A CN 2011102115025A CN 201110211502 A CN201110211502 A CN 201110211502A CN 102392441 A CN102392441 A CN 102392441A
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Abstract
The invention provides a composite crack control prestressed concrete big tube pile which comprises a steel pipe pile tip and a plurality of tube sections. A substrate of each tube section is made of concrete. The periphery of each tube section is provided with a UHTCC (Ultra High Toughness Cementitious Composites) crack control protective layer for replacing concrete; the outer circumference of the top of the tube section at the pile top is provided with a steel plate hoop; the bottom end of the tube section at the pile bottom is provided with a flange plate; a screw hooping is matched and a longitudinal reserved pore passage is arranged inside the tube pipe of each tube section; the tube sections are spliced into one whole body by tensioning longitudinal prestressed tendons passing through the reserved pore passages; the reserved pore passages are tightly filled through injection molding cement paste after the tensioning of the longitudinal prestressed tendons is completed; and the steel pipe pile tip is connected with the flange plate of the tube section at the pile bottom by a welding mode. Not only are the crack resistance, the crack control capability and the anti-erosion capacity of a pile body improved and the integrity of the pile body in the pile sinking process is ensured, but also the maintenance cost during the daily operation is obviously reduced, the service life of the tube pile is prolonged, and the composite crack control prestressed concrete big tube pile has obvious economic benefits.
Description
Technical field
The invention belongs to civil engineering, bridge engineering, port works pile foundation technical field, relate to a kind of prestressed concrete pipe pile and manufacturing approach thereof.
Background technology
In recent years, along with harbour, the flourish of Jiang Daqiao construction of striding over strait, pile tube relies on its good performance and good adaptive capacity to be widely used.Prestressed concrete pipe pile relies on its intensity height, good endurance, characteristics that strong, the impervious ability of resistance to corrosion is high also being able to extensive use in the processing of worker's structure foundation.Yet the concrete anti-strike ability is poor, if it is bigger to impact number of times, occurs pile body cracking and the bad phenomenon of stake bursting easily.Therefore, be necessary to improve its cracking resistance and toughness properties, guarantee the integrality of pile body in the pile driving process.
In order to guarantee that concrete has enough durability under the appearance environment of sea; The crack grade of " polyacrylonitrile fiber concrete design specifications " and " concrete durability design specifications " regulation prestressed concrete pipe pile is at least the B level; Spattering the district at wave then is that requirement reaches the A level; That is to say to require tight side edge tensile stress at least, and have certain more than needed less than the concrete cracking tensile stress.But at some in particular cases, the tensile stress of tight side edge surpasses concrete tensile stress, and concrete then can ftracture, even bigger width is arranged, and this will bring the problem of durability aspect to pile body.Therefore, the Crack Control ability that is necessary to improve pile body is to guarantee in particular cases safe and reliable.
Superhigh tenacity cement-base composite material (UHTCC) is as a kind of high-performance cement based composites; Under tensile load, show significant stretching strain sclerosis characteristic and many fine and closely woven fracture patterns; Ultimate tensile strength can reach more than 1%, and maximum crack width can be controlled within the 100 μ m.Some result of the tests show that this material has endurance quality and good impact property and Crack Control abilities such as good impervious, anti-carbonization, chloride-penetration resistance.UHTCC can be separated into many fine and closely woven cracks with the single crack that occurs in the concrete; Retrained the growth of concrete crack width effectively; Reach surrender up to the longitudinal tensile reinforcing bar; Tight side edge maximum crack width only has about 100 μ m, and obviously, this crack width rank is enough to satisfy the requirement under the extremely serious F environmental activity grade of corrosion.That is to say, do not applying under the prestressed situation that crack width just can reach the crack width requirement of spattering the district at the most serious wave of corrosion.Under uncracked condition; The anti-carbonation properties of UHTCC is with suitable with the intensity ordinary concrete, but after identical load presplitting, the carbonation depth at place, UHTCC crack is merely contrast concrete 1/3; That is to say that UHTCC anti-carbonization ability in normal operation will be far above ordinary concrete.Secondly, the UHTCC anti-permeability performance is superior to same intensity grade ordinary concrete, and more obvious along with increasing advantage the length of time, and the transmission coefficient in its 56 day length of time is about contrast concrete 1/3.The chloride permeability coefficient that chlorion is tested and the free chloride ion assay obtains fast shows that all UHTCC has the opposing chloride permeability performance that obviously is superior to ordinary concrete.
Based on this, the certain thickness UHTCC of outsourcing one deck around prestressed concrete pipe pile not only can play control and split effect, and can also improve the toughness properties and the endurance quality of whole pile body.
Summary of the invention
The present invention's technical problem at first to be solved provides the prestressed concrete Big Pipe Pile that a kind of composite material control is split, and effectively improves cracking resistance, toughness properties and the Crack Control ability of ordinary concrete Big Pipe Pile.
The present invention realizes through adopting following technical scheme: the prestressed concrete Big Pipe Pile that a kind of composite material control is split comprises steel pipe pile point and several tube couplings; Wherein, It is matrix that each tube coupling adopts concrete, and its periphery is provided with superhigh tenacity cement-base composite material UHTCC control and splits overcoat and substitute said concrete, and the stake push pipe saves a top external circumference and is provided with the steel plate hoop; Stake bottom tube joint bottom is provided with flange; Be furnished with spiral stirrup in the tube wall of each tube coupling and vertical reserving hole channel is set, the longitudinal prestressing muscle that passes said reserving hole channel through stretch-draw is spliced into one with each tube coupling, and said reserving hole channel presses the cement paste filling closely knit through annotating after the stretch-draw of longitudinal prestressing muscle is accomplished; Steel pipe pile point and said stake bottom tube joint flange be through being welded to connect, and be provided with stiffener in the intersection area of steel pipe pile point and flange.
Said control is split protection coating materials and is adopted superhigh tenacity cement-base composite material UHTCC; It is made up of short fiber and mortar matrix; The short fiber kind of admixture is one or more in vinal, polyethylene fibre, the aromatic polyamide fibre, and the volume volume is 1 ~ 3% of a UHTCC cumulative volume; The components by weight of mortar matrix is a cement: water: meticulous aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin=1: (0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4), and the maximum particle diameter of meticulous aggregate is not more than 0.5 mm; During the varying in weight of meticulous aggregate, flyash, silicon ash, granulated blast-furnace slag, metakaolin is zero; Meanwhile, an amount of chemical admixture of admixture according to actual needs, the water reducing agent as 0.2% ~ 3%, 0.05% ~ 0.3% antifoaming agent, 0.003% ~ 0.02% air entraining agent, 0.03% ~ 0.3% thickener etc.
The stretching strain that protection coating materials UHTCC is split in the control of the prestressed concrete Big Pipe Pile that said composite material control is split is more than 1%, and compressive strength is 30 ~ 60 MPa, and tensile strength is 3 ~ 6 MPa.
Said steel plate hoop is provided with scope and is stake top 300 ~ 500 mm, and thickness is 3 ~ 5 mm.
Said steel pipe pile point, its length is 0.6 ~ 1.2 m, internal diameter is identical with the pile tube internal diameter.
The stake footpath of said pile tube is generally 1200 ~ 1400 mm, and wall thickness is 130 ~ 150 mm.
It is 30 ~ 50 mm that overcoat thickness is split in said outer UHTCC control.
Another technical problem to be solved of the present invention provides the manufacturing approach of the prestressed concrete Big Pipe Pile that a kind of above-mentioned composite material control splits.For this reason; The present invention adopts following technical scheme: the manufacturing approach of the prestressed concrete Big Pipe Pile that described a kind of composite material control is split is for making each tube coupling of pile tube earlier; Carry out tube coupling then and be spliced into whole stake; Wherein, carrying out outer UHTCC control in the tube coupling manufacturing process earlier splits the overcoat operation and then carries out the internal layer concrete centrifugal and be shaped.
The manufacturing approach of the prestressed concrete Big Pipe Pile that described a kind of composite material control is split may further comprise the steps:
(1) assembly unit external mold lifts on the centrifuge, carries out the centrifugal operation that overcoat is split in outside control, and operation lifts it get off after accomplishing;
(2) the pile body reinforcing cage is installed, is arranged the reserving hole channel building mortion;
Ready reinforcing cage is put in the external mold, the external mold end plate with the pile tube consistent wall thickness is installed at two ends then, the steel pipe plug of ready overcoat rubber tube is penetrated in the hole of two ends external mold end plate, and tighten with nut and to be fixed on the end plate outside, form a stake mould;
(3) once more the stake mould is lifted on the centrifuge; Implementing the concrete centrifugal construction of internal layer makes; The mode that adopts centrifugal, vibration, roll extrusion to combine realizes that whole tube coupling is shaped: limit feeding limit vibration external mold at first, after feeding finishes, adopt limit vibration external mold limit roll-in pile tube inwall again; Then carry out centrifugal treating, guarantee that tube wall is further closely knit with the centrifugal acceleration that is not less than 73g;
(4) stream curing and form removal;
After centrifugal construction finishes, earlier 25 ~ 30
oLeft standstill under the temperature 5 ~ 6 hours, and carried out stream curing then, after stream curing is accomplished, extract pre-buried steel pipe plug out, remove external mold then, proceed the maintenance of sprinkling water, guarantee its abundant aquation to form reserving hole channel;
(5) the steel pipe pile point is welded on the flange of bottom tube joint, carries out each tube coupling assembly unit then;
Before the splicing, tube coupling end face superficial water mud mill is removed, clean and coupling molecule brushing, brushing cementing agent then with cleaning agent; Then the longitudinal prestressing muscle is passed reserving hole channel; And at the bottom of the one of which end is anchored on the flange, applying prestressing force at twice at its other end, the phase I is got 30% ~ 40% of design load; When treating that cementing agent becomes as a whole with tube coupling, the prestressing force that applies second stage again is to design load;
(6) reserving hole channel is annotated the pressure cement paste; Reserving hole channel is injected cement paste, and to make space between presstressed reinforcing steel and reserving hole channel fill closely knit, and slip casting is accomplished the back and kept 2 ~ 3 minutes with the pressure of 0.4 ~ 0.6 MPa, assurance duct slurry closely knit and and presstressed reinforcing steel between bond stress.
Owing to adopt technical scheme of the present invention; The present invention adopts certain thickness superhigh tenacity cement-base composite material (UHTCC) to technical problem to be solved by this invention to split overcoat as the control of prestressed concrete pipe pile; The Crack Control ability of the brilliance of this material, good shock resistance and endurance quality have been made full use of; Ability and corrosion resistance are split in the cracking resistance, the control that have not only improved pile body, have guaranteed the integrality of pile body in the pile driving process, and have significantly reduced the maintenance cost during the day-to-day operation; Prolong the application life of pile tube, had remarkable economic efficiency.With Big Pipe Pile with PHC stake compare, further improved the cracking resistance moment of flexure of pile tube.Secondly, but the expansion in the harmful crack of layer concrete in the UHTCC layer operative constraint of the outside is separated into many microscopic checks with it, and width limitations is within 100 μ m.And the good impact toughness that the UHTCC material is had can be resisted the reciprocal percussion that wave spatters district's seawater, and can avoid in pile driving process because defectives such as a bursting evil idea and pile body cracking appear in hammer action.
Manufacturing approach provided by the present invention makes splits overcoat and inner concrete is closely linked in the outer UHTCC control of pile body, can collaborative work, and constitution system is brought into play the effect of UHTCC fully.
Therefore, the present invention can be widely used in the ground processing of environment such as very high ocean of life requirement and rivers.
Description of drawings
Fig. 1 is the axial cross section sketch map of pile tube of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is a pile tube stake push pipe wall enlarged diagram of the present invention.
Fig. 4 is the B-B sectional view of Fig. 1.
Among the figure: 1: the longitudinal prestressing reinforcing bar; 2: concrete; Overcoat is split in the 3:UHTCC control; 4: spiral stirrup; 5: the steel plate hoop; 6: reserving hole channel; 7: flange; 8: the steel pipe pile point; 9: stiffener; 10: tube wall.
The specific embodiment
With reference to accompanying drawing.The prestressed concrete Big Pipe Pile that a kind of composite material control provided by the present invention is split comprises steel pipe pile point 8 and several tube couplings; Wherein, it be matrix that each tube coupling adopts concrete 2, and pile tube outside concrete is provided with UHTCC and controls and split overcoat 3 and substitute concrete 2; Stake push pipe joint top periphery is provided with steel plate hoop 5; Stake bottom tube joint bottom is provided with flange 7, is furnished with spiral stirrup 4 in the tube wall, and reserving hole channel 6 is set; The longitudinal prestressing muscle 1 that passes reserving hole channel 6 through stretch-draw is spliced into one with each tube coupling; Said reserving hole channel 6 is accomplished the back in 1 stretch-draw of longitudinal prestressing muscle, and to press cement paste to fill closely knit through annotating, and steel pipe pile point 8 and stake bottom tube joint flange 7 be through being welded to connect, and be provided with stiffener 9 in the intersection area of steel pipe pile point 8 and flange 7.
Said control is split protection coating materials and is adopted superhigh tenacity cement-base composite material UHTCC; It is made up of short fiber and mortar matrix; The short fiber kind of admixture is one or more in vinal, polyethylene fibre, the aromatic polyamide fibre, and the volume volume is 1 ~ 3% of a UHTCC cumulative volume; The components by weight of mortar matrix is a cement: water: meticulous aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin=1: (0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4), and the maximum particle diameter of meticulous aggregate is not more than 0.5 mm; During the varying in weight of meticulous aggregate, flyash, silicon ash, granulated blast-furnace slag, metakaolin is zero; Meanwhile; An amount of chemical admixture of admixture according to actual needs, the water reducing agent as 0.2% ~ 3%, 0.05% ~ 0.3% antifoaming agent, 0.003% ~ 0.02% air entraining agent, 0.03% ~ 0.3% thickener etc.
The stretching strain that protection coating materials UHTCC is split in said control is more than 1%, and compressive strength is 30 ~ 60 MPa, and tensile strength is 3 ~ 6 MPa.
The stake footpath of said pile tube is 1200 ~ 1400 mm, and wall thickness is 130 ~ 150 mm, and it is 30 ~ 50 mm that overcoat thickness is split in the outer UHTCC control of pile tube.
Said pile tube is provided with steel plate hoop 5 at the pile tube top, and the assurance stake withstands on local breaking do not taken place under the hammer action, and it is provided with scope and is top 300 ~ 500 mm, and thickness is 3 ~ 5 mm; Be provided with steel pipe pile point 8 at stake bottom tube joint, improve the ability that pile tube passes through closely knit soil layer, its length is 0.6 ~ 1.2 m, and internal diameter is identical with the pile tube internal diameter.
The manufacturing approach of the prestressed concrete Big Pipe Pile that described a kind of composite material control is split is for making each tube coupling of pile tube earlier; Carry out tube coupling then and be spliced into whole stake; Wherein, control earlier in the tube coupling manufacturing process split overcoat UHTCC3 control split the overcoat operation then carry out in layer concrete 2 flospinnings.
The embodiment of the prestressed concrete Big Pipe Pile that composite material control provided by the present invention is split is following:
1, the pile tube parameter comprises external diameter 1200 mm, internal diameter 910 mm, and thick 35 mm of UHTCC, Concrete Thick 110 mm reserve 16 holes, preformed hole diameter 40 mm, every hole arrangement of reinforcement 2 Φ
s1 * 7, diameter is 15.2 mm,
f Yk =1860 MPa,
f c=60 MPa (
f cBe concrete standard compressive strength).The long steel pipe pile point of 1 m is set, and its internal diameter and wall thickness are respectively 910 mm, 16mm; r
1, r
3Be respectively pile tube internal diameter, external diameter, r
2Radius for the interface location between outer UHTCC and the interior layer concrete.
2, the manufacturing step of whole stake:
(1) weight ratio of the mortar matrix composition of used UHTCC is a cement: water: sand: flyash: silicon ash: water reducing agent: thickener=1:1.58:1.5:2.0:0.15:0.01:0.003; Admixture volume volume is the polyvinyl alcohol short fiber of UHTCC cumulative volume 2%, and the maximum particle diameter of sand is 0.2 mm.
(2) assembly unit external mold lifts on the centrifuge, carries out the centrifugal operation that overcoat 3 is split in outside UHTCC control, and operation lifts it get off after accomplishing.
(3) arrange reinforcing cage and reserving hole channel molded component.Ready reinforcing cage is put in the external mold after the UHTCC flospinning, settled the external mold end plate at two ends, the steel pipe plug of ready overcoat rubber tube is penetrated in the hole of two ends end plate, and tighten with nut and to be fixed on the end plate outside;
(4) once more the stake mould is lifted on the centrifuge centrifugal operation of layer concrete 2 in implementing.The mode that adopts centrifugal, vibration, roll extrusion to combine realizes that whole tube coupling is shaped: limit feeding limit vibration external mold at first; After feeding finishes; Adopt limit vibration external mold limit roll-in pile tube inwall again, then carry out centrifugal treating, guarantee that tube wall is further closely knit with the centrifugal acceleration that is not less than 73g;
(5) carry out stream curing.Whole maintenance processes is divided into four-stage, comprises rest 5 ~ 6 hours, heat up 3 hours, thermostatic curing about 36 hours, cooling 6 hours.In the stage of resting, temperature is about 25 ~ 30
OCTemperature rise period, programming rate is not more than 10
oC/h; In the thermostatic curing stage, vapor (steam) temperature is no more than 45
oC, the pile body internal temperature is no more than 60
OC, maximum is no more than 65
OCTemperature-fall period is should not be higher than 10
oThe C/h cooling rate is reduced to and outdoor suitable temperature.After stream curing is accomplished, extract the steel pipe plug out to form reserving hole channel.Remove the pile tube outer steel mould then, and continue one week of water seasoning, guarantee abundant aquation.
(6) the whole stake of on-site consolidation.At first steel pipe pile point 8 and stake bottom tube joint flange 7 through being welded together, and be the stiffener 9 of 12 mm at the intersection area throat thickness of steel pipe pile point and flange.Before the splicing, tube coupling end face superficial water mud mill is removed, clean and the coupling molecule brushing with cleaning agent, and the brushing cementing agent.Then the longitudinal prestressing muscle is passed reserving hole channel; And at the bottom of the one of which end is anchored on the flange, applying prestressing force at twice at its other end, the phase I is got 30% ~ 40% of design load; When treating that cementing agent becomes as a whole with tube coupling, the prestressing force that applies second stage again is to design load.
(7) reserving hole channel is annotated the pressure cement paste.The cement paste injection reserving hole channel that employing is mixed the high fluidity of the water/binder ratio about 0.32 of system, low bleeding rate by homogenizer makes the space between hole wall and the presstressed reinforcing steel fill closely knit; Operation process is gone up the duct behind layer duct for depressing earlier, by an end of stake to the other end slowly, slip casting equably, keep the pressure 3 minutes of 0.5 MPa after slip casting is accomplished again, guarantee slurry density and and presstressed reinforcing steel between bond stress.
Claims (9)
1. the prestressed concrete Big Pipe Pile that the composite material control is split is characterized in that said pile tube comprises steel pipe pile point and several tube couplings; Wherein, It is matrix that each tube coupling adopts concrete, and its periphery is provided with superhigh tenacity cement-base composite material UHTCC control and splits overcoat and substitute said concrete, and the stake push pipe saves a top external circumference and is provided with the steel plate hoop; Stake bottom tube joint bottom is provided with flange; Be furnished with spiral stirrup in the tube wall of each tube coupling and vertical reserving hole channel is set, the longitudinal prestressing muscle that passes said reserving hole channel through stretch-draw is spliced into one with each tube coupling, and said reserving hole channel presses the cement paste filling closely knit through annotating after the stretch-draw of longitudinal prestressing muscle is accomplished; Steel pipe pile point and said stake bottom tube joint flange be through being welded to connect, and be provided with stiffener in the intersection area of steel pipe pile point and flange.
2. the prestressed concrete Big Pipe Pile that a kind of composite material control as claimed in claim 1 is split; It is characterized in that said superhigh tenacity cement-base composite material UHTCC; It is made up of short fiber and mortar matrix; The short fiber kind of admixture is one or more in vinal, polyethylene fibre, the aromatic polyamide fibre, and the volume volume is 1 ~ 3% of a UHTCC cumulative volume; The components by weight of mortar matrix is a cement: water: meticulous aggregate: flyash: silicon ash: granulated blast-furnace slag: metakaolin=1: (0.27 ~ 2.2): (0 ~ 3): (0 ~ 6.9): (0 ~ 0.3): (0 ~ 0.55): (0 ~ 0.4), and the maximum particle diameter of meticulous aggregate is not more than 0.5 mm; During the varying in weight of meticulous aggregate, flyash, silicon ash, granulated blast-furnace slag, metakaolin is zero.
3. the prestressed concrete Big Pipe Pile that a kind of composite material control as claimed in claim 2 is split, the stretching strain that it is characterized in that said UHTCC is more than 1%, and compressive strength is 30 ~ 60 MPa, and tensile strength is 3 ~ 6 MPa.
4. the prestressed concrete Big Pipe Pile that a kind of composite material control as claimed in claim 1 is split is characterized in that said steel plate hoop is provided with scope and is stake top 300 ~ 500 mm, and thickness is 3 ~ 5 mm.
5. the prestressed concrete Big Pipe Pile that a kind of composite material control as claimed in claim 1 is split is characterized in that the length of said steel pipe pile point is 0.6 ~ 1.2 m, and internal diameter is identical with the pile tube internal diameter.
6. the prestressed concrete Big Pipe Pile that a kind of composite material control as claimed in claim 1 is split is characterized in that the stake footpath of said prestressed concrete Big Pipe Pile is 1200 ~ 1400 mm, and wall thickness is 130 ~ 150 mm.
7. the prestressed concrete Big Pipe Pile that a kind of composite material control as claimed in claim 1 is split is characterized in that it is 30 ~ 50 mm that overcoat thickness is split in said UHTCC control.
8. the manufacturing approach of the prestressed concrete Big Pipe Pile split of the described composite material control of claim 1; It is characterized in that making earlier each tube coupling of pile tube; Carry out tube coupling then and be spliced into whole stake; Wherein, carrying out outer UHTCC control in the tube coupling manufacturing process earlier splits the overcoat operation and then carries out the internal layer concrete centrifugal and be shaped.
9. the manufacturing approach of the prestressed concrete Big Pipe Pile that composite material control as claimed in claim 8 is split is characterized in that, the manufacturing of whole pile tube may further comprise the steps:
(1) assembly unit external mold lifts on the centrifuge, carries out the centrifugal operation that overcoat is split in outside control, and operation lifts it get off after accomplishing;
(2) the pile body reinforcing cage is installed, is arranged the reserving hole channel building mortion;
Ready reinforcing cage is put in the external mold, the external mold end plate with the pile tube consistent wall thickness is installed at two ends then, the steel pipe plug of ready overcoat rubber tube is penetrated in the hole of two ends external mold end plate, and tighten with nut and to be fixed on the end plate outside, form a stake mould;
(3) once more the stake mould is lifted on the centrifuge; Implementing the concrete centrifugal construction of internal layer makes; The mode that adopts centrifugal, vibration, roll extrusion to combine realizes that whole tube coupling is shaped: limit feeding limit vibration external mold at first, after feeding finishes, adopt limit vibration external mold limit roll-in pile tube inwall again; Then carry out centrifugal treating, guarantee that tube wall is further closely knit with the centrifugal acceleration that is not less than 73g;
(4) stream curing and form removal;
After centrifugal construction finishes, earlier 25 ~ 30
oLeft standstill under the temperature 5 ~ 6 hours, and carried out stream curing then, after stream curing is accomplished, extract pre-buried steel pipe plug out, remove external mold then, proceed the maintenance of sprinkling water, guarantee its abundant aquation to form reserving hole channel;
(5) the steel pipe pile point is welded on the flange of bottom tube joint, carries out each tube coupling assembly unit then;
Before the splicing, tube coupling end face superficial water mud mill is removed, clean and coupling molecule brushing, brushing cementing agent then with cleaning agent; Then the longitudinal prestressing muscle is passed reserving hole channel; And at the bottom of the one of which end is anchored on the flange, applying prestressing force at twice at its other end, the phase I is got 30% ~ 40% of design load; When treating that cementing agent becomes as a whole with tube coupling, the prestressing force that applies second stage again is to design load;
(6) reserving hole channel is annotated the pressure cement paste; Reserving hole channel is injected cement paste, and to make space between presstressed reinforcing steel and reserving hole channel fill closely knit, and slip casting is accomplished the back and kept 2 ~ 3 minutes with the pressure of 0.4 ~ 0.6 MPa, assurance duct slurry closely knit and and presstressed reinforcing steel between bond stress.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817791A (en) * | 2014-02-28 | 2014-05-28 | 邓亚平 | Machining method for pre-stress concrete solid cylindrical pile |
| CN104912060A (en) * | 2015-06-10 | 2015-09-16 | 江苏东浦管桩有限公司 | Concrete pipe pile production construction method |
| CN105000848A (en) * | 2015-07-09 | 2015-10-28 | 阜阳三环管桩有限公司 | Slag concrete pipe pile and preparation method therefor |
| CN105908899A (en) * | 2016-04-21 | 2016-08-31 | 吉林省健林建筑科技有限公司 | Core-grouted assembly-type concrete column and construction method of same |
| CN107162511A (en) * | 2017-06-23 | 2017-09-15 | 成都市容德建筑劳务有限公司 | A kind of concrete applied to push pipe |
| CN108298900A (en) * | 2018-01-29 | 2018-07-20 | 中国电力科学研究院有限公司 | A kind of transmission pole |
| CN109404007A (en) * | 2018-11-22 | 2019-03-01 | 浙江大学 | A kind of underground engineering support antiknock integration composite construction |
| CN112523200A (en) * | 2020-12-18 | 2021-03-19 | 郑州大学综合设计研究院有限公司 | Integrated tubular pile |
| CN113773009A (en) * | 2021-11-15 | 2021-12-10 | 交通运输部天津水运工程科学研究所 | Repair material and repair method for improving toughness of port high-pile wharf structure |
| CN116143466A (en) * | 2022-11-29 | 2023-05-23 | 中交第三航务工程局有限公司 | Super-long prefabricated large pipe pile, preparation method and application of super-long prefabricated large pipe pile |
| CN116537244A (en) * | 2023-07-06 | 2023-08-04 | 交通运输部公路科学研究所 | Combined underwater bridge Liang Zhuangji and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010048039A (en) * | 2008-08-25 | 2010-03-04 | Japan Pile Corp | Prestressed reinforced concrete pile |
| CN101787672A (en) * | 2010-02-12 | 2010-07-28 | 大连理工大学 | Method for repairing concrete crack with multi-cracking cement-based composite |
| CN201738298U (en) * | 2010-07-07 | 2011-02-09 | 东南大学 | Large-diameter prestressed concrete tubular pile of glass steel tube die |
-
2011
- 2011-07-26 CN CN2011102115025A patent/CN102392441A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010048039A (en) * | 2008-08-25 | 2010-03-04 | Japan Pile Corp | Prestressed reinforced concrete pile |
| CN101787672A (en) * | 2010-02-12 | 2010-07-28 | 大连理工大学 | Method for repairing concrete crack with multi-cracking cement-based composite |
| CN201738298U (en) * | 2010-07-07 | 2011-02-09 | 东南大学 | Large-diameter prestressed concrete tubular pile of glass steel tube die |
Non-Patent Citations (1)
| Title |
|---|
| 梅祥等: "后张法预应力混凝土大直径管桩的研制", 《混凝土与水泥制品》, no. 03, 30 June 2002 (2002-06-30) * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817791A (en) * | 2014-02-28 | 2014-05-28 | 邓亚平 | Machining method for pre-stress concrete solid cylindrical pile |
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| CN107162511A (en) * | 2017-06-23 | 2017-09-15 | 成都市容德建筑劳务有限公司 | A kind of concrete applied to push pipe |
| CN108298900A (en) * | 2018-01-29 | 2018-07-20 | 中国电力科学研究院有限公司 | A kind of transmission pole |
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| CN113773009A (en) * | 2021-11-15 | 2021-12-10 | 交通运输部天津水运工程科学研究所 | Repair material and repair method for improving toughness of port high-pile wharf structure |
| CN116143466A (en) * | 2022-11-29 | 2023-05-23 | 中交第三航务工程局有限公司 | Super-long prefabricated large pipe pile, preparation method and application of super-long prefabricated large pipe pile |
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