CN202023189U - Hollow concrete square pile for foundation - Google Patents

Hollow concrete square pile for foundation Download PDF

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Publication number
CN202023189U
CN202023189U CN 201120114870 CN201120114870U CN202023189U CN 202023189 U CN202023189 U CN 202023189U CN 201120114870 CN201120114870 CN 201120114870 CN 201120114870 U CN201120114870 U CN 201120114870U CN 202023189 U CN202023189 U CN 202023189U
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China
Prior art keywords
pile
square pile
concrete hollow
hollow square
base concrete
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CN 201120114870
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Chinese (zh)
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张强
朱建舟
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Shanghai Zhongji Pile Industry Co Ltd
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Abstract

A hollow concrete square pile for a foundation comprises at least one reinforcing cage; the reinforcing cage includes skeleton main reinforcements and hoop reinforcements; the hoop reinforcements are spirally and serially welded on the skeleton main reinforcements; metal end plates, which are connected with the reinforcing cage, are arranged at the two ends of the hollow concrete square pile for the foundation; the metal end plates are identical to the pile body of the hollow concrete square pile for the foundation in shape; a round hole is formed in the center of each metal end plate; threading holes and tensioning holes are symmetrically formed among the round holes and the four sides of the metal end plates; the threading holes are counter sinks; and the tensioning holes are connected with the threading holes through reinforcement slots. The hollow concrete square pile for the foundation has the advantages of low possibility of damage, good pile shaft ductility, large pile-forming bearing capacity and favorable bending resistance and shearing resistance.

Description

A kind of base concrete hollow square pile
Technical field
The utility model relates to a kind of base concrete hollow square pile.
Background technology
Precast concrete pile pile body cross sectional shape mainly contains the prefabricated concrete pipe pile of circular cross-section and the precast concrete square pile in square or rectangular cross section in the building foundation engineering.Since the nineties in last century, along with the standardization of prefabricated concrete pipe pile and the continuous development of production and construction technology, Foundation Design is approved widely to the pile tube product, the pile tube product has its significant superiority in actual engineering, but also come with some shortcomings, as: pile tube is the outer ring structure, is difficult for group in the transportation and pricks, fixes; Because there is certain ovality in tubular pile body, is prone to pile body when adopting an armful pressure to construct and embraces broken accident; Pile tube when excavation of foundation pit, occurs the stake position easily and tilts behind soft soil foundation construction; Side's stake is big for the cushion cap of pipe pile foundation, and basic cost is more high.
Precast concrete square pile mainly adopt handwork non-prestressed, vibro-moulding process is in the majority, concrete adopts natural curing, structure mostly is solid square sectional.Also there are some defectives in this precast square pile, as: production efficiency is low, and the production cycle is long; The product quality instability, there is defective in bearing capacity of pile; Bending resistance shear behavior deficiency; Four jiaos of pile bodies are destroyed easily during construction, cause pile body to scrap.
The utility model content
The utility model provides a kind of base concrete hollow square pile, to reduce or to avoid problem noted earlier.
For addressing the above problem, the utility model proposes a kind of base concrete hollow square pile, comprise at least one reinforcing cage; Described reinforcing cage comprises skeleton master muscle and stirrup, and described stirrup shape in the shape of a spiral is welded on the described skeleton master muscle continuously; The two ends of described base concrete hollow square pile are provided with the metal end plate that is connected with described reinforcing cage, the profile of described metal end plate is identical with the pile body profile of described base concrete hollow square pile, central authorities have a circular hole, be provided with through wires hole and tension force hole between four limits of described circular hole and described metal end plate symmetrically, described through wires hole is a counter sink, and described tension force hole links to each other with described through wires hole by the muscle groove separately.
Preferably, described base concrete hollow square pile profile is square, the stake heart is columnar mesopore, four limit corners of described base concrete hollow square pile are stress and eliminate circular arc, the arc radius R1 of an arc chord angle of described base concrete hollow square pile is 30-40mm, the arc radius R2 of all the other arc chord angles is 10-20mm, and described reinforcing cage also comprises at least two auxilliary muscle parallel with described skeleton master muscle, that be welded to connect with described stirrup.
Preferably, described through wires hole on the described metal end plate and the described tension force hole layout that is square, the pile body connecting portion of described metal end plate and described base concrete hollow square pile is provided with cuff, and described metal end plate four limits are provided with the bevel for welding at 30-55 degree inclination angle.
Preferably, described skeleton master muscle is a rod iron, and described skeleton master muscle is parallel with the pile body outline line of described base concrete hollow square pile, and described rod iron and described metal end plate junction have heading.
Base concrete hollow square pile provided by the utility model owing to adopted hollow shape, so material-saving, from heavy and light, pile body four limit corners are stress and eliminate circular arc, pile crown is connected with cuff, makes piling not fragile when the building operations hammering, has improved product pile rate.
Base concrete hollow square pile provided by the utility model, main muscle is rationally distributed, stirrup in the shape of a spiral shape be welded on the main muscle, and have the auxilliary muscle parallel with main muscle, so pile body ductility is good, become pile capacity big, the bending resistance shear behavior is good.
Base concrete hollow square pile provided by the utility model, end plate have bevel for welding and have also strengthened the fastness that pile connects.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is according to the end plate of the base concrete hollow square pile of a specific embodiment of the present utility model and the structural representation of cuff;
Fig. 2 is the structural representation according to the base concrete hollow square pile of a specific embodiment of the present utility model;
Fig. 3 is the vertical view according to the base concrete hollow square pile of a specific embodiment of the present utility model;
Fig. 4 is the schematic cross-section according to the base concrete hollow square pile of a specific embodiment of the present utility model.
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.Wherein, identical parts adopt identical label.
Describe structure and principle thereof with reference to the accompanying drawings in detail according to a kind of base concrete hollow square pile of the present utility model.
Fig. 1 is according to the end plate of the base concrete hollow square pile of a specific embodiment of the present utility model and the structural representation of cuff; Fig. 2 is the structural representation according to the base concrete hollow square pile of a specific embodiment of the present utility model; Fig. 3 is the vertical view according to the base concrete hollow square pile of a specific embodiment of the present utility model; Fig. 4 is the schematic cross-section according to the base concrete hollow square pile of a specific embodiment of the present utility model.For clarity sake, among the figure with three vertical coordinate systems as a reference, wherein, along coordinate axes z to the axial direction that is this base concrete hollow square pile, along coordinate axes x to the horizontal direction that is described base concrete hollow square pile cross section, along coordinate axes y to the longitudinal direction that is described base concrete hollow square pile cross section.
Specifically, shown in Fig. 1,2,4, described base concrete hollow square pile comprises at least one reinforcing cage 1, concrete 2.Described reinforcing cage 1 comprises skeleton master muscle 11 and stirrup 12, and the stirrup 12 of reinforcing cage shape in the shape of a spiral is welded on the described skeleton master muscle 11 continuously; Described base concrete hollow square pile profile is square, and the stake heart is columnar mesopore, and its four limits corner is stress and eliminates circular arc, and the arc radius R1 of one of them arc chord angle is 30-40mm, and arc chord angle is 90 degree; The arc radius R2 of all the other arc chord angles is 10-20mm, and arc chord angle is similarly 90 degree.Pile body four limit corners are stress and eliminate circular arc, make piling not fragile when the building operations hammering.The two ends of described base concrete hollow square pile are provided with the metal end plate 3 that is connected with described reinforcing cage 1, have further strengthened the intensity of pile crown.
In another specific embodiment, described reinforcing cage 1 also comprises at least two parallel with described skeleton master muscle 11 auxilliary muscle 13 that are welded to connect with described stirrup 12, further strengthens the bending resistance shear behavior of pile body.
In the utility model, auxilliary muscle 13 is parallel to skeleton master muscle 11 to be arranged, the difference of itself and skeleton master muscle 11 is, the two ends of skeleton master muscle 11 are connected on the metal end plate 3 at two ends of prestress square pile, are used to bear along pile body axial pulling force or pressure.And auxilliary muscle 13 two ends or at least one end are not connected on the metal end plate 3, are used to bear the horizontal shearing force of pile body, and concrete square pile of the prior art is not arranged auxilliary muscle, and the bending resistance shear behavior is slightly poor than technique scheme of the present utility model.
In another specific embodiment, described auxilliary muscle 13 is a nonprestressed reinforcement, is evenly distributed on the described stirrup 12 at least two symmetrical limits on the pile body cross section, and quantity is the 2-18 root.
In another specific embodiment, described skeleton master muscle 11 is parallel with the pile body outline line.
With reference to Fig. 1,3 as shown in the figure, the profile of described metal end plate 3 is identical with the pile body profile, and two end plates four limits are provided with the bevel for welding 32 at 30-55 degree inclination angle, has therefore strengthened the fastness that pile connects.
In another specific embodiment, described metal end plate 3 central authorities are and the stake identical circular hole of bore dia in the heart, be provided with through wires hole 311 and tension force hole 313 between circular hole and four limits symmetrically, each described tension force hole 313 links to each other with described through wires hole 311 by muscle groove 312 separately.
In another specific embodiment, described skeleton master muscle 11 is a rod iron, and rod iron and described metal end plate 3 junctions have heading, can make rod iron more firm with being connected of end plate 3 like this.
In another specific embodiment, state described through wires hole 311 on the metal end plate 3 and described tension force hole 313 layout that is square generally, described through wires hole 311 is counter sinks, can avoid like this that the heading to described skeleton master muscle 11 causes damage when the construction hammering.
In another specific embodiment, described metal end plate 3 is provided with cuff 4 with the pile body connecting portion, therefore can further strengthen the intensity of pile crown, avoids when the construction hammering pile crown being caused damage.
In another specific embodiment, referring to Fig. 1, the length L of described cuff 4 is 110mm-320mm.Described cuff 4 is being the projection of 1-3mm along the equidistant 2-4 of being provided with of the axial direction of described concrete hollow square pile road radius.
Base concrete hollow square pile provided by the utility model owing to adopted hollow shape, so material-saving, from heavy and light, pile body four limit corners are stress and eliminate circular arc, pile crown is connected with cuff, makes piling not fragile when the building operations hammering, has improved product pile rate.
Base concrete hollow square pile provided by the utility model, main muscle is rationally distributed, stirrup in the shape of a spiral shape be welded on the main muscle, and have the auxilliary muscle parallel with main muscle, so pile body ductility is good, become pile capacity big, the bending resistance shear behavior is good.
Base concrete hollow square pile provided by the utility model, end plate have bevel for welding and have also strengthened the fastness that pile connects.
Though it will be appreciated by those skilled in the art that the utility model is that mode according to a plurality of embodiment is described, and is not that each embodiment only comprises an independently technical scheme.Narration like this only is for the sake of clarity in the manual; those skilled in the art should make manual as a wholely to be understood, and regard technical scheme related among each embodiment as the mode that can be combined into different embodiment mutually understand protection domain of the present utility model.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, equivalent variations, the modification of being done under the prerequisite that does not break away from design of the present utility model and principle and combining all should belong to the scope of the utility model protection.

Claims (4)

1. a base concrete hollow square pile comprises, reinforcing cage (1), concrete (2); It is characterized in that described reinforcing cage (1) comprises skeleton master muscle (11) and stirrup (12), described stirrup (12) shape in the shape of a spiral is welded on the described skeleton master muscle (11) continuously; The two ends of described base concrete hollow square pile are provided with the metal end plate (3) that is connected with described reinforcing cage (1), the profile of described metal end plate (3) is identical with the pile body profile of described base concrete hollow square pile, central authorities have a circular hole, be provided with through wires hole (311) and tension force hole (313) between four limits of described circular hole and described metal end plate (3) symmetrically, described through wires hole (311) is a counter sink, and described tension force hole (313) links to each other with described through wires hole (311) by muscle groove (312) separately.
2. base concrete hollow square pile according to claim 1, it is characterized in that, described base concrete hollow square pile profile is square, the stake heart is columnar mesopore, four limit corners of described base concrete hollow square pile are stress and eliminate circular arc, the arc radius R1 of an arc chord angle of described base concrete hollow square pile is 30-40mm, the arc radius R2 of all the other arc chord angles is 10-20mm, and described reinforcing cage (1) also comprises at least two auxilliary muscle (13) parallel with described skeleton master muscle (11), that be welded to connect with described stirrup (12).
3. base concrete hollow square pile according to claim 2, it is characterized in that, described through wires hole (311) on the described metal end plate (3) and described tension force hole (313) layout that is square, described metal end plate (3) is provided with cuff (4) with the pile body connecting portion of described base concrete hollow square pile, and described metal end plate (3) four limits are provided with the bevel for welding (32) at 30-55 degree inclination angle.
4. base concrete hollow square pile according to claim 3, it is characterized in that, described skeleton master muscle (11) is a rod iron, and described skeleton master muscle (11) is parallel with the pile body outline line of described base concrete hollow square pile, and described rod iron and described metal end plate (3) junction have heading.
CN 201120114870 2011-04-19 2011-04-19 Hollow concrete square pile for foundation Ceased CN202023189U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201120114870 CN202023189U (en) 2011-04-19 2011-04-19 Hollow concrete square pile for foundation

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Application Number Priority Date Filing Date Title
CN 201120114870 CN202023189U (en) 2011-04-19 2011-04-19 Hollow concrete square pile for foundation

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CN202023189U true CN202023189U (en) 2011-11-02

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CN 201120114870 Ceased CN202023189U (en) 2011-04-19 2011-04-19 Hollow concrete square pile for foundation

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225297A (en) * 2013-03-29 2013-07-31 南通中技桩业有限公司 Strengthening structure of prestressed hollow square pile
CN103233463A (en) * 2013-05-23 2013-08-07 建华建材(中国)投资有限公司 Concrete prefabricated product for underground construction and production method of product
CN111037736A (en) * 2019-11-18 2020-04-21 福建大力新型建材科技有限公司 Prestressed concrete high-strength anti-corrosion pipe pile and production method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103225297A (en) * 2013-03-29 2013-07-31 南通中技桩业有限公司 Strengthening structure of prestressed hollow square pile
CN103233463A (en) * 2013-05-23 2013-08-07 建华建材(中国)投资有限公司 Concrete prefabricated product for underground construction and production method of product
CN103233463B (en) * 2013-05-23 2016-06-08 建华建材(中国)投资有限公司 A kind of concrete prefabricated product for underground engineering and production method thereof
CN111037736A (en) * 2019-11-18 2020-04-21 福建大力新型建材科技有限公司 Prestressed concrete high-strength anti-corrosion pipe pile and production method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: BAO LEI

Free format text: FORMER OWNER: SHANGHAI ZHONGJI PILE INDUSTRY CO., LTD.

Effective date: 20131206

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 200434 HONGKOU, SHANGHAI TO: 201999 BAOSHAN, SHANGHAI

TR01 Transfer of patent right

Effective date of registration: 20131206

Address after: 201999, room 57, No. three, 104 village, Baosteel, Shanghai, Baoshan District

Patentee after: Bao Lei

Address before: 200434, 4, 2 building, 437 Guang Yue Road, Shanghai, Hongkou District

Patentee before: Shanghai Zhongji Pile Industry Co., Ltd.

C35 Partial or whole invalidation of patent or utility model
IW01 Full invalidation of patent right

Decision date of declaring invalidation: 20140408

Decision number of declaring invalidation: 22273

Granted publication date: 20111102