CN106514861A - Composite reinforcing bar reinforcement cage prestressed tensioning device and method for manufacturing prestressed square-sectioned pile - Google Patents
Composite reinforcing bar reinforcement cage prestressed tensioning device and method for manufacturing prestressed square-sectioned pile Download PDFInfo
- Publication number
- CN106514861A CN106514861A CN201611042981.1A CN201611042981A CN106514861A CN 106514861 A CN106514861 A CN 106514861A CN 201611042981 A CN201611042981 A CN 201611042981A CN 106514861 A CN106514861 A CN 106514861A
- Authority
- CN
- China
- Prior art keywords
- steel
- cage
- reinforcement cage
- reinforcement
- prestressed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
- B28B23/12—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed to form prestressed circumferential reinforcements
- B28B23/16—Prestressed reinforcing nets
-
- 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
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
-
- 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
- E02D5/58—Prestressed concrete piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1628—Shapes rectangular
- E02D2200/1635—Shapes rectangular made from single element
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0046—Production methods using prestressing techniques
Abstract
The invention discloses a composite reinforcing bar reinforcement cage prestressed tensioning device. The device comprises a steel strand initial stress applying mechanism arranged at the cage tail side of a composite reinforcing bar reinforcement cage and a steel strand tensioning mechanism arranged at the cage head side of the composite reinforcing bar reinforcement cage. The invention further discloses a method for manufacturing a prestressed concrete square-sectioned pile. The method includes the following steps that the composite reinforcing bar reinforcement cage is installed on a mold; prestressed steel strands are tensioned by the adoption of the composite reinforcing bar reinforcement cage prestressed tensioning device, concrete is prepared to be poured into the mold, and vibrating and tamping are further performed; natural curing or steam curing is adopted; and when the concrete reaches specified strength, the prestressed steel strands are stretched, and the prestressed steel strands at the stretched positions are treated. The prestressed tensioning device disclosed by the invention is adopted for tensioning the prestressed steel strands of the reinforcement cage, all the steel strands can obtain uniform tensioning stress, precision is high, and operation is convenient and easy to implement.
Description
Technical field
The invention belongs to concrete square pile technical field, more particularly to a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device
And the preparation method of prestress square pile.
Background technology
Prefabricated Reinforced Concrete Square Pile is important pile foundation material in China's civil construction foundation engineering, and China is prefabricated
The larger a kind of concrete product of yield in component.Prefabricated Reinforced Concrete Square Pile product has the characteristics that：Pile concrete
Intensity is higher, and single pile bearing capacity of pile is larger；Construction is affected less by groundwater change；Make facility, both can with in-situ precast,
Can also factorial praluction；According to different geological conditions, the stake of all size and length can be produced；Pile quality reliability, construction
Quality is easy to ensure than bored concrete pile；Speed of application is fast, and the scale of investment of building of production line is less etc..In recent years, as China builds
The development of industry is built, the product development that many areas obtain energetically at home.
The direct shadow such as part of the steel reinforcement cage as Prefabricated Reinforced Concrete Square Pile, its composition, quality and structural strength
Ring the quality of Prefabricated Reinforced Concrete Square Pile.The prestressed concrete square pile applied in the market is all centrifugal forming mostly
Hollow pile, using steel bar for prestressed concrete as cage bar, because production efficiency is high, cage bar intensity is of a relatively high, strong concrete
The advantages of degree is high, the cycle is very fast and be that building field is a large amount of, widely used, and continue up using so far, in current conventional piles
Occupy critical role in basis.But, during production and application, cage bar is present using the prestressing concrete hollow pile of rod iron
More problem.For the ease of tensioning in production, the hot pier nose technology of rod iron must be adopted, by the pier nose and pile body end plate, stretch board
Blocking carries out prestressed stretch-draw, and the pier nose part of the hot pier rod iron can cause the intensity of rod iron to be undermined material to be damaged, meanwhile, by
It is inconsistent in rod iron pier nose precision, cannot be fully contacted with end plate during tensioning, cause end plate local failure；Rod iron is due to cutting essence
Degree control is inadequate, causes rod iron length to differ, Stress non-homogeneity, or even the phenomenon broken occurs in stretching process.In addition, raw
The operations such as centrifugal forming, high-temperature steam curing are needed in product, causes complex process.Prestressing concrete hollow pile mechanical property is preferable,
But invar rod fragility is high, cause overall fragility substantially, bending resistance and shear behavior are not enough, when disaster occurs, escape and give first aid to the time
It is relatively short, it is unfavorable for personnel escape, for security consideration, many areas of China have started to forbid in some pile foundation engineerings
Used in prestressing concrete hollow pile.
Prestress wire is widely used in bridge, building, water because of the characteristics of possessing high intensity and good relaxation property
Profit, the energy and Geotechnical Engineering etc..In recent years, China is applied to prestressed-concrete pile and has carried out substantial amounts of research to steel strand wires,
But it is only a kind of technology design mostly, does not form technical scheme with practical value.Using prestress wire as prefabricated
Stake prestressing force cage bar, high with prestressed steel bar intensity than concrete, ductility is good, but in actual applications, there is also prominent
Problem：One is steel strand wires is formed by many steel wires are stranded, is difficult welding, is difficult winding, the reinforcing bar that prefabricated pile is made up of steel reinforcement cage
Cage is difficult to make；Two are that while to apply the technics comparing in the aspect steel strand prestress tensioning such as bridge ripe, but apply pre-
The aspect of stake processed, but studies few, relate generally to how by steel strand anchoring, tensioning, put and put a follower head and process etc. each
Individual technological process.
Therefore, the prestressed stretch-draw of each arrangement of reinforcement for the steel reinforcement cage of compound form of reinforcement, how is realized, becomes ability
Domain technical problem urgently to be resolved hurrily.
The content of the invention
A kind of weak point that the present invention is present for the above-mentioned prior art of solution, there is provided compound arrangement of reinforcement steel reinforcement cage prestressing force
The preparation method of tensioning equipment and prestress square pile.
The technical solution adopted in the present invention is：
A kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device, the cross section of the compound arrangement of reinforcement steel reinforcement cage are square,
Compound arrangement of reinforcement steel reinforcement cage includes 4M root prestressing force cage bars, and M is the integer more than or equal to 1, and each prestressing force cage bar is prestressing force
Steel strand wires, each prestress wire are distributed on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square respectively；The prestressed stretch-draw
Device includes at the beginning of the steel strand wires of the cage tail side for being arranged on compound arrangement of reinforcement steel reinforcement cage plus stress applying mechanism and is arranged on compound matching somebody with somebody
The steel strand tension mechanism of the halter side of muscle steel reinforcement cage；Stress applying mechanism is added to include first end case and be arranged at the beginning of steel strand wires
The first fining twisted steel that and position equal with prestress wire quantity is relative on first end case, the one of the first fining twisted steel
Positioning of first fining twisted steel on first end case is realized by the first fining twisted steel nut in end, the first fining twisted steel
The other end is connected with corresponding prestress wire by the first connector of finish rolling thread steel；Steel strand tension mechanism includes tensioning
Plate, is provided with the second relative fining twisted steel of and position equal with prestress wire quantity, the second finish rolling spiral shell on stretch board
One end of line steel positioning of second fining twisted steel on stretch board, the second finish rolling spiral shell are realized by the second fining twisted steel nut
The other end of line steel is connected with corresponding prestress wire by the second connector of finish rolling thread steel, the steel strand tension machine
Structure also includes driving stretch board along the drive division of the axial movement of compound arrangement of reinforcement steel reinforcement cage.
The drive division includes the second end case, the leading screw for crossing the second end case and is arranged on the side of the second end case and is used for
The electric hydraulic lifting jack of leading screw, stretch board is driven to be located between the second end case and the halter of compound arrangement of reinforcement steel reinforcement cage, leading screw is horizontal
It is connected with stretch board after wearing the second end case, on electric hydraulic lifting jack, is configured with dial plate.
The steel strand tension mechanism also includes that transport trolley, the second end case and electric hydraulic lifting jack are arranged at conveying
On dolly.
The side of the first end case is provided with backing plate.
The compound arrangement of reinforcement steel reinforcement cage also includes stirrup and the non-prestressed cage bar of 4N roots, and N is the integer more than or equal to 1,
Wherein four non-prestressed cage bars are separately positioned on four corner points of the compound arrangement of reinforcement steel reinforcement cage of square, remaining non-prestressed
Cage bar is distributed on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square, and the stirrup is in non-prestressed cage bar and prestress wire
Peripheral border be distributed in the shape of a spiral.
The non-prestressed cage bar is HRB400 reinforcing bars, and the stirrup is cold-drawn low-carbon wire or mild steel hot rolling disk
Bar.
The invention also discloses a kind of preparation method of prestressed concrete square pile, the method comprises the steps：
Step 1, prepares mould, and the brushing interleaving agent on mould is arranged on above-mentioned compound arrangement of reinforcement steel reinforcement cage on mould；
Step 2, carries out opening to prestress wire using compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device as above
Draw, during tensioning, the first fining twisted steel nut is twisted by torque spanner first, to carry out to each prestress wire just plus answer
The applying of power, at the same ensure the first plus stress of each prestress wire it is same numerically, just plus after stress applies to finish, electricity consumption
Hydrodynamic pressure jack drives leading screw movement, and then drives stretch board to move along the axial direction of compound arrangement of reinforcement steel reinforcement cage, by electricity
Each prestress wire is stretched to same data by the dial reading on hydrodynamic pressure jack；
Step 3, prepares concrete, is poured in mould, and carries out vibrations tamping；
Step 4, using natural curing or steam curing；
Step 5, when concrete reaches prescribed strength, puts tension prestress steel strand wires, process put at prestress wire,
With blocking with the concrete of intensity with pile body at stake end prestress wire exposure, at pile top prestress wire exposure, epoxy is used
Resin is blocked.
One set of die makes many prestressed concrete square piles simultaneously, and the steel reinforcement cage of many square piles is sequentially placed in mould,
Every square pile correspondence configures a set of arrangement of reinforcement steel reinforcement cage pre-stress stretching device compound as above, and the section of many square piles is same
The prestressing force cage bar of position is connected to an entirety, while carrying out tensioning.
Multiple points of moulds are provided with one set of die, the steel reinforcement cage of many square piles is sequentially placed in point mould, the steel of every square pile
The cage tail side of muscle cage is equipped with the beginning of a set of steel strand wires as above plus stress applying mechanism, and many square piles share a set of as above institute
The steel strand tension mechanism for stating, the side of mould are equipped with the track for transport trolley walking, and the mould has many sets, many cover dies
Tool is sequentially arranged along track direction.
When the steel reinforcement cage being pointed in each point of mould of same mold carries out tensioning, pretensioning is located at the reinforcing bar in the middle of mould
Cage, then tensioning is positioned at the steel reinforcement cage of middle both sides.
As a result of above-mentioned technical proposal, having the beneficial effect that acquired by the present invention：
1st, the framework of steel reinforcement of the prestressed concrete square pile in the present invention uses non-prestressed cage bar and prestress steel
The steel reinforcement cage of the compound form of reinforcement of twisted wire, such steel reinforcement cage deformation performance are good, and tensile strength is high, excellent in mechanical performance；Specifically
Say, under destruction, non-prestressed cage bar can effectively delay the longitudinal direction development for destroying crack, control critical eigenvalue width to increase crack
Quantity is so as to discharge stress, and prestress wire is good compared to ductility for prestressed steel bar, with more preferable deformability.
2nd, tensioning is carried out to the prestress wire of steel reinforcement cage using the pre-stress stretching device in the present invention, each steel can be made
Twisted wire obtains unified tension stress, and high precision is easy to operation, it is ensured that the intensity of steel strand wires, toughness and each steel reinforcement cage
Making precision.
3rd, it is using the preparation method prestressed concrete square pile in the present invention, time saving and energy saving, improve production efficiency.
Description of the drawings
Fig. 1 is the part-structure schematic diagram of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device in the present invention.
Fig. 2 is the reinforcement structure schematic diagram of prestressed concrete square pile in the present invention.
Fig. 3 is that a kind of structure chart of form of reinforcement of arrangement of reinforcement steel reinforcement cage is combined in the present invention.
Fig. 4 is that a kind of structure chart of form of reinforcement of arrangement of reinforcement steel reinforcement cage is combined in the present invention.
Fig. 5 is that a kind of structure chart of form of reinforcement of arrangement of reinforcement steel reinforcement cage is combined in the present invention.
Fig. 6 is that a kind of structure chart of form of reinforcement of arrangement of reinforcement steel reinforcement cage is combined in the present invention.
Wherein,
1st, the first fining twisted steel 2, the first fining twisted steel nut 3, backing plate 4, first end case 5, the first finish rolling spiral shell
Line steel connector 6, prestress wire 7, the second connector of finish rolling thread steel 8, the second fining twisted steel 9, stretch board
10th, the second fining twisted steel nut 11, the second end case 12, leading screw 13, non-prestressed cage bar 14, stirrup
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but the present invention is not limited to
These embodiments.
As depicted in figs. 1 and 2, a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device, the compound arrangement of reinforcement steel reinforcement cage
Cross section is square, and compound arrangement of reinforcement steel reinforcement cage includes the non-prestressed cage bar 13 of stirrup 14,4N roots and 4M root prestressing force cage bars, M
The integer more than or equal to 1 is with N, stirrup 14 is cold-drawn low-carbon wire or hot-rolled carbon steel wire rods, each non-prestressed cage bar
13 is HRB400 reinforcing bars, and each prestressing force cage bar is prestress wire 6, and each prestress wire 6 is distributed on square respectively
On the four edges of compound arrangement of reinforcement steel reinforcement cage, the stirrup 14 is in non-prestressed cage bar 13 and the peripheral border of prestress wire 6
It is distributed in the shape of a spiral.
Specifically, the form of reinforcement for arrangement of reinforcement steel reinforcement cage being combined in the present invention can be as shown in Figure 3 four piece it is non-it is pre- should
Advocate muscle 13 and four prestress wires 6, wherein, four non-prestressed cage bars 13 are located at the compound arrangement of reinforcement reinforcing bar of square respectively
On the four edges of cage, four prestress wires 6 are located on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square respectively；In the present invention
The form of reinforcement of compound arrangement of reinforcement steel reinforcement cage can also be the non-prestressed cage bar 13 of as shown in Figure 4 four piece and eight prestress steels
The form of reinforcement of twisted wire, four non-prestressed cage bars 13 are located on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square respectively, eight
Prestress wire 6 is located on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square respectively；Compound arrangement of reinforcement steel reinforcement cage in the present invention
Form of reinforcement can also be the non-prestressed cage bar 13 of as shown in Figure 5 eight piece and eight prestress wires 6 form of reinforcement,
Wherein, four non-prestressed cage bars are located on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square respectively, in addition four it is non-prestressed
Cage bar 13 is separately positioned on the centre of the compound arrangement of reinforcement steel reinforcement cage four edges of quadrangle, and eight prestress wires 6 are distributed on respectively
On the four edges of the compound arrangement of reinforcement steel reinforcement cage of quadrangle；The form of reinforcement of the compound arrangement of reinforcement steel reinforcement cage in the present invention can also be such as figure
Form of reinforcement of the eight non-prestressed cage bars 13 and 16 shown in 6 with prestress wire 6, wherein, eight non-prestressed masters
Four non-prestressed cage bars 13 in muscle 13 are arranged on four corner points of the compound arrangement of reinforcement steel reinforcement cage of quadrangle, in addition four it is non-pre-
Stress cage bar 13 is separately positioned on the centre of the compound arrangement of reinforcement steel reinforcement cage four edges of quadrangle, and ten six roots of sensation prestress wires 6 are distinguished
It is distributed on the four edges of the compound arrangement of reinforcement steel reinforcement cage of quadrangle.
The pre-stress stretching device includes at the beginning of the steel strand wires of the cage tail side for being arranged on compound arrangement of reinforcement steel reinforcement cage plus stress
Applying mechanism and be arranged on compound arrangement of reinforcement steel reinforcement cage halter side steel strand tension mechanism；Stress is added to apply machine at the beginning of steel strand wires
Structure includes first end case 4 and is arranged on first end case 4 the first finish rolling equal with 6 quantity of prestress wire and that position is relative
Screw-thread steel 1, one end of the first fining twisted steel 1 realize the first fining twisted steel 1 first by the first fining twisted steel nut 2
Positioning on the case 4 of end, the side that first end case 4 is contacted with the first fining twisted steel nut 2 is provided with backing plate 3, the first finish rolling
The other end of screw-thread steel 1 is connected with corresponding prestress wire 6 by the first connector of finish rolling thread steel 5；Steel strand tension
Mechanism includes stretch board 9, and the second relative finish rolling spiral shell of and position equal with 6 quantity of prestress wire is provided with stretch board 9
Line steel 8, one end of the second fining twisted steel 8 realize the second fining twisted steel 8 in tensioning by the second fining twisted steel nut 10
Positioning on plate 9, the other end of the second fining twisted steel 8 pass through the second connector of finish rolling thread steel 7 and corresponding prestress steel
Twisted wire 6 is connected, and the steel strand tension mechanism also includes driving stretch board 9 along the driving of the axial movement of compound arrangement of reinforcement steel reinforcement cage
Portion, the drive division include the second end case 11, the leading screw 12 for crossing the second end case 11 and be arranged on the second end case 11 side and
For driving the electric hydraulic lifting jack of leading screw 12, stretch board 9 be located at the second end case 11 and compound arrangement of reinforcement steel reinforcement cage halter it
Between, leading screw 12 is connected with stretch board 9 after crossing the second end case 11, and dial plate is configured with electric hydraulic lifting jack；The steel strand wires
Tensioning mechanism also includes that transport trolley, the second end case 11 and electric hydraulic lifting jack are arranged on transport trolley.
It should be noted that the version of drive division that stretch board 9 is moved axially along steel reinforcement cage is driven in the present invention simultaneously
The mode that above-mentioned electric hydraulic lifting jack is engaged with leading screw 12 is not limited only to, other modes can also be adopted, such as adopted
The mode of Driven by Hydraulic Cylinder, makes the piston rod of hydraulic cylinder be connected with stretch board 11, as long as stretch board 11 can be driven along steel reinforcement cage
Move axially to realize the tensioning to steel strand wires.
The invention also discloses a kind of preparation method of prestressed concrete square pile, the method comprises the steps：
Step 1, prepares mould, and the brushing interleaving agent on mould is arranged on above-mentioned compound arrangement of reinforcement steel reinforcement cage on mould；
Step 2, carries out opening to prestress wire 6 using compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device as above
Draw, during tensioning, the first fining twisted steel nut 2 is twisted by torque spanner first, to carry out just adding to each prestress wire 6
The applying of stress, at the same ensure the first plus stress of each prestress wire 6 it is same numerically, just plus after stress applies to finish,
Drive leading screw 12 to move with electric hydraulic lifting jack, and then drive stretch board 9 to move along the axial direction of compound arrangement of reinforcement steel reinforcement cage,
By the dial reading on electric hydraulic lifting jack, each prestress wire 6 is stretched to into same data；
Step 3, prepares concrete, is poured in mould, and carries out vibrations tamping；
Step 4, using natural curing or steam curing；
Step 5, when concrete reaches prescribed strength, puts tension prestress steel strand wires 6, process put at prestress wire
6, with blocking with the concrete of intensity with pile body at 6 exposure of stake end prestress wire, use at 6 exposure of pile top prestress wire
Epoxy resin is blocked.
One set of die makes many prestressed concrete square piles simultaneously, and the steel reinforcement cage of many square piles is sequentially placed in mould,
Every square pile correspondence configures a set of arrangement of reinforcement steel reinforcement cage pre-stress stretching device compound as above, and the section of many square piles is same
The prestressing force cage bar of position is connected to an entirety, while carrying out tensioning.
The mould has many sets, and many molds are sequentially arranged, and multiple points of moulds, the steel of many square piles are provided with each mold
Muscle cage is sequentially placed in point mould, and the cage tail side of the steel reinforcement cage of every square pile is equipped with the beginning of a set of steel strand wires as above plus stress
Applying mechanism, many square piles share a set of steel strand tension mechanism as above, and the side of mould is equipped with and supplies transport trolley
The track of walking, when the steel reinforcement cage being pointed in each point of mould of same mold carries out tensioning, it is preferable that pretensioning is located at mould
Middle steel reinforcement cage, then tensioning, positioned at the steel reinforcement cage of middle both sides, transport trolley drives steel strand tension mechanism to move back and forth.
The part do not addressed in the present invention adopts or uses for reference prior art to be capable of achieving.
Specific embodiment described herein is only the spiritual example explanation to the present invention.Belonging to of the invention
Those skilled in the art can make various modifications or supplement or adopt what is be similar to described specific embodiment
Mode is substituted, but without departing from the spiritual of the present invention or surmounts scope defined in appended claims.
Claims (10)
1. a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device, the cross section of the compound arrangement of reinforcement steel reinforcement cage are square, multiple
Closing arrangement of reinforcement steel reinforcement cage includes 4M root prestressing force cage bars, and M is the integer more than or equal to 1, and each prestressing force cage bar is prestress steel
Twisted wire, each prestress wire are distributed on the four edges of the compound arrangement of reinforcement steel reinforcement cage of square respectively, it is characterised in that described pre-
Stress tension device includes at the beginning of the steel strand wires of the cage tail side for being arranged on compound arrangement of reinforcement steel reinforcement cage plus stress applying mechanism and setting
In the steel strand tension mechanism of the halter side of compound arrangement of reinforcement steel reinforcement cage；Stress applying mechanism is added to include first end case at the beginning of steel strand wires
First fining twisted steel relative with equal with prestress wire quantity on first end case and position is arranged on, the first finish rolling spiral shell
One end of line steel positioning of first fining twisted steel on first end case, the first finish rolling are realized by the first fining twisted steel nut
The other end of screw-thread steel is connected with corresponding prestress wire by the first connector of finish rolling thread steel；Steel strand tension mechanism
Including stretch board, the second relative fining twisted steel of and position equal with prestress wire quantity on stretch board, is provided with, the
Positioning of second fining twisted steel on stretch board is realized by the second fining twisted steel nut in one end of two fining twisted steels, the
The other end of two fining twisted steels is connected with corresponding prestress wire by the second connector of finish rolling thread steel, and the steel is twisted
Line tensioning mechanism also includes driving stretch board along the drive division of the axial movement of compound arrangement of reinforcement steel reinforcement cage.
2. a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device according to claim 1, it is characterised in that the driving
Portion includes the second end case, the leading screw for crossing the second end case and is arranged on the side of the second end case and the electronic liquid for driving leading screw
Pressure jack, stretch board are located between the second end case and the halter of compound arrangement of reinforcement steel reinforcement cage, leading screw cross after the second end case with
Arm-tie is connected, and dial plate is configured with electric hydraulic lifting jack.
3. a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device according to claim 2, it is characterised in that the steel is twisted
Line tensioning mechanism also includes that transport trolley, the second end case and electric hydraulic lifting jack are arranged on transport trolley.
4. a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device according to claim 1, it is characterised in that described first
The side of end case is provided with backing plate.
5. a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device according to claim 1, it is characterised in that described compound
Arrangement of reinforcement steel reinforcement cage also includes stirrup and the non-prestressed cage bar of 4N roots, and N is the integer more than or equal to 1, wherein four non-prestressed
Cage bar is separately positioned on four corner points of the compound arrangement of reinforcement steel reinforcement cage of square, and remaining non-prestressed cage bar is distributed on square
On the four edges of compound arrangement of reinforcement steel reinforcement cage, the stirrup in the peripheral border of non-prestressed cage bar and prestress wire helically
Shape is distributed.
6. a kind of compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device according to claim 5, it is characterised in that described non-pre-
Stress cage bar is HRB400 reinforcing bars, and the stirrup is cold-drawn low-carbon wire or hot-rolled carbon steel wire rods.
7. a kind of preparation method of prestressed concrete square pile, the method comprise the steps：
Step 1, prepares mould, and the brushing interleaving agent on mould is arranged on above-mentioned compound arrangement of reinforcement steel reinforcement cage on mould；
Step 2, using the compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device as described in claim 3 to 6 claim in advance should
Power steel strand wires carry out tensioning, during tensioning, twist the first fining twisted steel nut by torque spanner first, with to each prestress steel
Twisted wire carry out just plus stress applying, while ensure the first plus stress of each prestress wire it is same numerically, just plus stress
After applying is finished, leading screw movement is driven with electric hydraulic lifting jack, and then drive stretch board along the axial direction of compound arrangement of reinforcement steel reinforcement cage
Move, by the dial reading on electric hydraulic lifting jack, each prestress wire is stretched to into same data；
Step 3, prepares concrete, is poured in mould, and carries out vibrations tamping；
Step 4, using natural curing or steam curing；
Step 5, when concrete reaches prescribed strength, puts tension prestress steel strand wires, process put at prestress wire, stake end
With blocking with the concrete of intensity with pile body at prestress wire exposure, at pile top prestress wire exposure, epoxy resin is used
Closure.
8. the preparation method of a kind of prestressed concrete square pile according to claim 7, it is characterised in that one set of die is same
When make many prestressed concrete square piles, the steel reinforcement cage of many square piles is sequentially placed in mould, every square pile correspondence configuration one
Set is combined arrangement of reinforcement steel reinforcement cage pre-stress stretching device, the prestressing force cage bar phase of the section same position of many square piles as above
It is linked to be an entirety, while carrying out tensioning.
9. the preparation method of a kind of prestressed concrete square pile according to claim 7, it is characterised in that in one set of die
Multiple points of moulds are provided with, the steel reinforcement cage of many square piles is sequentially placed in point mould, the cage tail side of the steel reinforcement cage of every square pile is equipped with
Stress applying mechanism, many square piles is added to share a set of steel strand tension machine as above at the beginning of a set of steel strand wires as above
Structure, the side of mould are equipped with the track for transport trolley walking, and the mould has many sets, many molds along track direction successively
Arrangement.
10. the preparation method of a kind of prestressed concrete square pile according to claim 9, it is characterised in that be pointed to same
When steel reinforcement cage in each point of mould of one set of die carries out tensioning, pretensioning is located at the steel reinforcement cage in the middle of mould, then during tensioning is located at
Between both sides steel reinforcement cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611042981.1A CN106514861A (en) | 2016-11-24 | 2016-11-24 | Composite reinforcing bar reinforcement cage prestressed tensioning device and method for manufacturing prestressed square-sectioned pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611042981.1A CN106514861A (en) | 2016-11-24 | 2016-11-24 | Composite reinforcing bar reinforcement cage prestressed tensioning device and method for manufacturing prestressed square-sectioned pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106514861A true CN106514861A (en) | 2017-03-22 |
Family
ID=58356739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611042981.1A Pending CN106514861A (en) | 2016-11-24 | 2016-11-24 | Composite reinforcing bar reinforcement cage prestressed tensioning device and method for manufacturing prestressed square-sectioned pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106514861A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795028A (en) * | 2019-01-31 | 2019-05-24 | 嘉兴欣创混凝土制品有限公司 | A kind of complex configuration system of same batch tensioning muscle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3860687A (en) * | 1971-10-05 | 1975-01-14 | Strangbetong Ab | Method of producing a prestressed concrete member |
| CN102561599A (en) * | 2011-12-08 | 2012-07-11 | 东南大学 | Connector of steel stranded wires and finished twisted steel |
| CN103255718A (en) * | 2013-04-28 | 2013-08-21 | 中交第三公路工程局有限公司 | Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology |
| CN104385454A (en) * | 2014-10-08 | 2015-03-04 | 威海齐德新型建材有限公司 | Common threaded steel tensioning device and prefabricated square pile process |
| CN104563103A (en) * | 2014-12-30 | 2015-04-29 | 青岛兴河建材有限公司 | Composite-reinforcement partially-prestressed concrete solid square pile and production method thereof |
| CN206623214U (en) * | 2016-11-24 | 2017-11-10 | 青岛昊河水泥制品有限责任公司 | Compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device |
-
2016
- 2016-11-24 CN CN201611042981.1A patent/CN106514861A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3860687A (en) * | 1971-10-05 | 1975-01-14 | Strangbetong Ab | Method of producing a prestressed concrete member |
| CN102561599A (en) * | 2011-12-08 | 2012-07-11 | 东南大学 | Connector of steel stranded wires and finished twisted steel |
| CN103255718A (en) * | 2013-04-28 | 2013-08-21 | 中交第三公路工程局有限公司 | Pre-tensioning method plate-beam track movable type steel transverse beam integer tensioning device and tensioning technology |
| CN104385454A (en) * | 2014-10-08 | 2015-03-04 | 威海齐德新型建材有限公司 | Common threaded steel tensioning device and prefabricated square pile process |
| CN104563103A (en) * | 2014-12-30 | 2015-04-29 | 青岛兴河建材有限公司 | Composite-reinforcement partially-prestressed concrete solid square pile and production method thereof |
| CN206623214U (en) * | 2016-11-24 | 2017-11-10 | 青岛昊河水泥制品有限责任公司 | Compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109795028A (en) * | 2019-01-31 | 2019-05-24 | 嘉兴欣创混凝土制品有限公司 | A kind of complex configuration system of same batch tensioning muscle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101642932B (en) | Production process of short tubular piles | |
| CN102966101B (en) | Prestressed concrete solid square pile and making method thereof | |
| CN105965686B (en) | A kind of electric wire lever production technology | |
| CN102828510A (en) | H-shaped support pile and preparation method thereof | |
| CN102979086B (en) | Prestressed concrete square pile and manufacturing method thereof | |
| CN205917695U (en) | Anchor rope | |
| CN106514862A (en) | Reinforcing cage prestress tensioning device and making method of prestressed square pile | |
| CN206623214U (en) | Compound arrangement of reinforcement steel reinforcement cage pre-stress stretching device | |
| CN102995635B (en) | Prestressed concrete square pile and manufacturing method thereof | |
| CN106514861A (en) | Composite reinforcing bar reinforcement cage prestressed tensioning device and method for manufacturing prestressed square-sectioned pile | |
| CN104563103A (en) | Composite-reinforcement partially-prestressed concrete solid square pile and production method thereof | |
| CN207077608U (en) | Steel reinforcement cage pre-stress stretching device | |
| CN104652430A (en) | Composite reinforcement partially prestressed concrete solid square pile and manufacturing method thereof | |
| CN203007936U (en) | Prestressed concrete solid square pile | |
| CN85105541A (en) | Common concrete pipe and manufacture method thereof that the equally distributed steel wire of a kind of usefulness is strengthened | |
| CN105665906B (en) | Reinforced bar skeleton seam welder, Making of reinforcement cage method and square pile preparation method | |
| CN201512788U (en) | Horizontal load-bearing enhancement pre-stressed concrete pipe pile | |
| CN201033945Y (en) | Short strand wire stretching stopping means | |
| CN105598568B (en) | Reinforced bar skeleton seam welder, Making of reinforcement cage method and square pile preparation method | |
| CN104420464A (en) | Preparation method of prestressed concrete square pile | |
| CN106827589A (en) | A kind of preparation technology of the FRP section bars arch of embedded shaped steel | |
| CN205380353U (en) | Steel bar framework seam welder | |
| CN205380352U (en) | Seam welder for steel reinforcement framework | |
| CN208163959U (en) | A kind of swivel nut component for big nut provision for disengagement | |
| CN206173820U (en) | Push -pull system is opened to endless chain formula prestressed wire rope automatic synchronization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
|
| RJ01 | Rejection of invention patent application after publication |