CN203452065U - Non-prestressed high-strength centrifugal concrete tubular pile - Google Patents

Non-prestressed high-strength centrifugal concrete tubular pile Download PDF

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Publication number
CN203452065U
CN203452065U CN201320460383.1U CN201320460383U CN203452065U CN 203452065 U CN203452065 U CN 203452065U CN 201320460383 U CN201320460383 U CN 201320460383U CN 203452065 U CN203452065 U CN 203452065U
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China
Prior art keywords
pile
prestressed
concrete
strength centrifugal
tubular pile
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CN201320460383.1U
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Chinese (zh)
Inventor
崔凤祥
刘永超
苏永刚
刘洁
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TIANJIN JIANCHENG JIYE GROUP CO Ltd
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TIANJIN JIANCHENG JIYE GROUP CO Ltd
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Abstract

The utility model provides a non-prestressed high-strength centrifugal concrete tubular pile. The non-prestressed high-strength centrifugal concrete tubular pile comprises a concrete pile body and end plates at the two ends. A steel reinforcement cage skeleton is arranged in the concrete pile body and comprises a plurality of non-prestressed main ribs longitudinally and evenly distributed and spiral stirrups fixedly connected to the non-prestressed main ribs. The two ends of the non-prestressed main ribs are fixedly connected into end plate holes in the end plates at the two ends respectively. The non-prestressed high-strength centrifugal concrete tubular pile has the advantages that damage on the pile body is effectively reduced, the ductility of the pile body is improved by more than 30%, the pile body is prevented from cracking, the overall performance of the tubular pile is improved by more than 20%, the non-prestressed high-strength centrifugal concrete tubular pile is low in cost, high in cost-performance ratio and large in vertical bearing capacity and pile foundation horizontal bearing capacity and can meet earthquake proofing requirements and be widely applied to foundation construction on all kinds of properties of soil, and technologies are simple.

Description

Non-prestressed high-strength centrifugal concrete pipe pile
Technical field
The utility model relates to foundation construction technology in civil works, particularly a kind of non-prestressed high-strength centrifugal concrete pipe pile.
Background technology
Concrete is typical fragile material, and modulus of elasticity is high, and its compressive strength and tensile strength are without linear corresponding relation.Along with going deep into of prestressed concrete pipe pile and square pile research in recent years; its horizontal bearing capacity and employing are pressed to steaming technique endurance issues; particularly the horizontal bearing capacity of pre-stressed concrete pipe pile foundation has different viewpoints; therefore; country and part province standard or atlas are made relevant regulations; the prestressed concrete pipe pile scope of application is that non-Anti-Seismic Region and seismic fortification intensity 6 are spent, the areas of 7 degree, if be used in the area of seismic fortification intensity 8 degree, needs to check separately; Or should not use in the area of seismic fortification intensity 8 degree.
In the production and construction technique of pile tube, exist anti-bending strength poor at present, destroy as brittle fracture, ductility is poor, exist pile tube to occur carrying out rapidly after cracking, tensile region reinforcing bar enters very soon surrender and constriction until fracture, ultimate bending moment and the cracking moment phenomenon such as be more or less the same.These phenomenons cause pile tube easily to occur the quality accidents such as broken pile.
Summary of the invention
For structural deficiency in prior art, the purpose of this utility model is to provide a kind of non-prestressed high-strength centrifugal concrete pipe pile, has effectively improved pile tube overall performance and ductility, has avoided in tube pile construction process, tilt, displacement is excessive, the phenomenon of rupture failure even.
For achieving the above object, the technical solution adopted in the utility model is to provide a kind of non-prestressed high-strength centrifugal concrete pipe pile, this pile tube includes the end plate at concrete pile body and two ends, in described concrete pile body, be provided with reinforcement cage skeleton, described reinforcement cage skeleton includes many non-prestressed main muscle, spiral stirrup; Wherein: described non-prestressed main flaccidity of tendon and muscle is to being uniformly distributed, and spiral stirrup is fixedly connected on non-prestressed main muscle, and non-prestressed main muscle two ends are fixedly connected on respectively in the end plate bore of two ends end plate.
The beneficial effects of the utility model are the destruction of using non-prestressed high-strength centrifugal concrete pipe pile effectively to reduce pile body, improved the ductility of pile body more than 30%, avoided the phenomenon of pile body cracking, improve the overall performance of pile tube more than 20%, and technique is simple, cost is low, and cost performance is high, be that a kind of vertical bearing capacity is high, also high, the centrifugal concrete pile that can meet shockproof requirements of pile foundation level bearing capacity, be widely used in the foundation construction of various soil properties.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is tip plate configurations schematic diagram of the present utility model;
Fig. 3 is the structural representation of reinforcement cage skeleton of the present utility model and end plate;
Fig. 4 is hoisting point position schematic diagram of the present utility model.
In figure:
1, non-prestressed main muscle 2, spiral stirrup 3, concrete pile body 4, end plate
5, steel reinforcement framework cage 6, end plate bore 7, suspension centre
The specific embodiment
By reference to the accompanying drawings and embodiment non-prestressed high-strength centrifugal concrete pipe pile of the present utility model is illustrated.
Non-prestressed high-strength centrifugal concrete pipe pile of the present utility model, this pile tube includes the end plate 4 at concrete pile body 3 and two ends, in described concrete pile body 3, be provided with reinforcement cage skeleton 5, described reinforcement cage skeleton 5 includes many non-prestressed main muscle 1, spiral stirrup 2; It is characterized in that: described non-prestressed main muscle 1 is longitudinally uniformly distributed, and spiral stirrup 2 is fixedly connected on non-prestressed main muscle 1, and non-prestressed main muscle 1 two ends are fixedly connected on respectively in the end plate bore 6 of two ends end plate 4.
Two end positions of described concrete pile body 3 distances are that 0.2071L place is provided with two for transporting the suspension centre 7 of lifting, and L is pile section length.
As shown in Figure 1, 2, 3, non-prestressed high-strength centrifugal concrete pipe pile of the present utility model, this pile tube includes the end plate 4 at concrete pile body 3 and two ends, in described concrete pile body 3, be provided with reinforcement cage skeleton 5, described reinforcement cage skeleton includes many non-prestressed main muscle 1, spiral stirrup 2.Described non-prestressed main muscle 1 is longitudinally uniformly distributed, and spiral stirrup 2 automatic seam-weldings are on non-prestressed main muscle 1.Non-prestressed main muscle 1 two ends respectively plug welding are connected in the end plate bore 6 of two ends end plate.
As shown in Figure 4, two end positions of described concrete pile body distance are that 0.207L place arranges two suspension centres 7, the long≤15m of stake, and L is pile section length, with hoist cable, this pile tube is transported to lifting.
Described non-prestressed main muscle 1 is used the hot rolled ribbed steel bar of different-diameter according to piles with different footpath.
Non-prestressed high-strength centrifugal concrete pipe pile of the present utility model is achieved in that
Adopt conventional formulation design concrete pile body 4, its strength grade is C60, and non-prestressed main muscle 1 is used the hot rolled ribbed steel bar of different-diameter according to piles with different footpath.
First by non-prestressed main concrete steel muscle 1 customized cut-off blanking.
Nonprestressed reinforcement 1 is welded into steel cage with spiral stirrup 2, makes reinforcement cage skeleton 5.
Make end plate 4, non-prestressed main muscle 1 two ends respectively plug welding are connected in the end plate bore 6 of end plate 4 at two ends.Then reinforcement cage skeleton 5 is put into mould together with end plate 4, carry out concrete feeding.
And then mould is placed in and on centrifuge, carries out centrifugal forming, after topple over remaining slurry.
Then the good mould of centrifugal forming is carried out to stream curing by strength grade of concrete requirement; After the demoulding, through Quality Inspector, judge pile tube credit rating, then put into pile tube and stack field, carry out natural curing.
This pile tube, when transportation lifting, lifts by crane with hoist cable.

Claims (2)

1. a non-prestressed high-strength centrifugal concrete pipe pile, this pile tube includes the end plate (4) at concrete pile body (3) and two ends, in described concrete pile body (3), be provided with reinforcement cage skeleton (5), described reinforcement cage skeleton (5) includes many non-prestressed main muscle (1), spiral stirrup (2); It is characterized in that: described non-prestressed main muscle (1) is longitudinally uniformly distributed, it is upper that spiral stirrup (2) is fixedly connected on non-prestressed main muscle (1), and non-prestressed main muscle (1) two ends are fixedly connected on respectively in the end plate bore (6) of two ends end plate (4).
2. non-prestressed high-strength centrifugal concrete pipe pile according to claim 1, is characterized in that: two end positions of described concrete pile body (3) distance are that 0.2071L place is provided with two for transporting the suspension centre (7) of lifting.
CN201320460383.1U 2013-07-30 2013-07-30 Non-prestressed high-strength centrifugal concrete tubular pile Active CN203452065U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320460383.1U CN203452065U (en) 2013-07-30 2013-07-30 Non-prestressed high-strength centrifugal concrete tubular pile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320460383.1U CN203452065U (en) 2013-07-30 2013-07-30 Non-prestressed high-strength centrifugal concrete tubular pile

Publications (1)

Publication Number Publication Date
CN203452065U true CN203452065U (en) 2014-02-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362118A (en) * 2013-07-30 2013-10-23 天津建城基业集团有限公司 Non-prestressed high-strength centrifugal concrete pipe pile

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103362118A (en) * 2013-07-30 2013-10-23 天津建城基业集团有限公司 Non-prestressed high-strength centrifugal concrete pipe pile

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