CN202031083U - Prestress hollow square pile - Google Patents
Prestress hollow square pile Download PDFInfo
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- CN202031083U CN202031083U CN 201120114900 CN201120114900U CN202031083U CN 202031083 U CN202031083 U CN 202031083U CN 201120114900 CN201120114900 CN 201120114900 CN 201120114900 U CN201120114900 U CN 201120114900U CN 202031083 U CN202031083 U CN 202031083U
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- Prior art keywords
- hollow square
- square pile
- pile
- stress hollow
- metal end
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- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 238000003466 welding Methods 0.000 claims abstract description 10
- 239000004567 concrete Substances 0.000 claims abstract description 7
- 210000003205 muscle Anatomy 0.000 claims description 39
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 229910000754 Wrought iron Inorganic materials 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 4
- 239000010959 steel Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000011513 prestressed concrete Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- WLJVNTCWHIRURA-UHFFFAOYSA-N pimelic acid Chemical compound OC(=O)CCCCCC(O)=O WLJVNTCWHIRURA-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
A prestress hollow square pile comprises a reinforcement cage and concrete. The reinforcement cage comprises framework main steel bars and stirrups. The stirrups are continuously welded on the framework main steel bars in a spiral shape. Two ends of the prestress hollow square pile are provided with metal end plates connected with the reinforcement cage, hoops are arranged at the joint portions of the metal end plates and a pile body, the prestress hollow square pile is in a square shape, and a pile core is a cylindrical central hole. Quadrilateral corners of the prestress hollow square pile are in a circular shape which can eliminate stress, an arc radius R1 of a pair of arc angles on a diagonal is larger than an arc radius R2 of the other pair of arc angles, and the reinforcement cage further comprises at least two auxiliary ribs which are parallel to the framework main steel bars and connected to the stirrups in welding mode. The prestress hollow square pile is not easy to be damaged, has the pile body with good ductility, and has good bending-resistance and shear-resistance.
Description
Technical field
The utility model relates to a kind of pre-stress hollow square pile.
Background technology
Prestress square pile is superior to advantages such as intensity, high rigidity, flexing resistance, the crack resistance of common side stake is strong with it and is happy to employing by the building circle.But existing prestress square pile has reduced the contiguity of stake cage because the fault of construction of stake cage itself cannot effectively be combined closely between each bar master muscle, thereby has influenced the quality of pile cutoff.In addition, when reality is used, often just can reach Len req between the pile cutoff by effectively plugging into, existing prestress square pile only by with angle bar that stirrup is connected between welding plug into, owing to can't realize " main muscle connection ", and in welding the time can only be " vertical position welding ", and welding quality is difficult to guarantee, thereby causes the flexing resistance of the whole stake that is welded by each pile cutoff relatively poor.
Also using in the building foundation engineering has a kind of pretensioning prestressed concrete hollow square pile product, is divided into two types by concrete strength and hollow square pile internal diameter: pre-stressed concrete hollow square stake (being called for short the PS stake), pre-stressed concrete hollow square stake (being called for short the PHS stake).The vertical concrete steel material of these two kinds of hollow square pile product configurations is prestressed reinforcement, the cracking resistance of hollow square pile is fine on this prestressed concrete of two types, but carry out pile foundation very easy brittle failure of when excavation after in transportation and construction, running into hard thing or construction, fragility when this class hollow square pile is stressed is big, distortion is little, bent toughness is poor, a little less than the shear resistance, particularly when being subjected to horizontal loads such as seismic load, hollow square pile destroys easily.
The utility model content
The utility model provides a kind of pre-stress hollow square pile, to reduce or to avoid problem noted earlier.
For addressing the above problem, the utility model proposes a kind of pre-stress hollow square pile, comprise reinforcing cage, concrete; 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 pre-stress hollow square pile are provided with the metal end plate that is connected with described reinforcing cage, and described metal end plate and pile body connecting portion are provided with cuff, and described pre-stress hollow square pile profile is square, the stake heart is columnar mesopore; Four limit corners of described pre-stress hollow square pile are stress and eliminate circular arc, wherein the arc radius R1 of a pair of arc chord angle on the diagonal is greater than another arc radius R2 to arc chord angle, 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, the profile of described metal end plate is identical with the pile body profile of described pre-stress hollow square pile, four limits of described metal end plate are provided with bevel for welding, central authorities are circular holes identical with the median pore diameter of described pre-stress hollow square pile, are provided with through wires hole and tension force hole between four limits of described circular hole and described metal end plate symmetrically.
Preferably, described tension force hole links to each other with described through wires hole by the muscle groove.
Preferably, described through wires hole on the described metal end plate and the described tension force hole layout that is square, described through wires hole is a counter sink.
Preferably, described skeleton master muscle is a rod iron, and described skeleton master muscle is parallel with the pile body outline line, and rod iron and described metal end plate junction have heading.
Pre-stress 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.
Pre-stress 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.
Pre-stress 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 the structural representation according to the pre-stress hollow square pile of a specific embodiment of the present utility model;
Fig. 2 is the broken section structural representation according to the pre-stress hollow square pile of a specific embodiment of the present utility model;
Fig. 3 is the vertical view according to the pre-stress hollow square pile of a specific embodiment of the present utility model;
Fig. 4 is the schematic cross-section of pre-stress hollow square pile shown in Figure 1;
Fig. 5 is the A-A schematic cross-section of pre-stress hollow square pile shown in Figure 3;
Fig. 6 is the C portion enlarged diagram of pre-stress hollow square pile shown in Figure 3.
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 pre-stress hollow square pile of the present utility model.
Fig. 1 is the surface structure schematic diagram according to the pre-stress hollow square pile of a specific embodiment of the present utility model; Fig. 4 is the schematic cross-section of pre-stress hollow square pile shown in Figure 1.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 pre-stress hollow square pile, along coordinate axes x to the horizontal direction that is described pre-stress hollow square pile cross section, along coordinate axes y to the longitudinal direction that is described pre-stress hollow square pile cross section.
Specifically, shown in Fig. 1,4, described pre-stress hollow square pile comprises 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 pre-stress hollow square pile profile is square, the stake heart is columnar mesopore, and its four limits corner is stress and eliminates circular arc, and wherein the arc radius R1 of a pair of arc chord angle on the diagonal is 30-40mm, and arc chord angle is 90 degree; Another arc radius R2 to arc chord angle is 10-20mm, and arc chord angle is similarly 90 degree.That is to say, described pre-stress hollow square pile has the bigger stress of a pair of arc radius R1 and eliminates arc chord angle and another stress elimination arc chord angle less to arc radius R2, that is wherein the arc radius R1 of a pair of arc chord angle on the diagonal is greater than another arc radius R2 to arc chord angle.
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 pre-stress 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.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 that the two ends of skeleton master muscle 11 are connected on the metal end plate 3 at pre-stress hollow square pile two ends, is 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 pre-stress hollow 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.
Fig. 2 is the broken section structural representation according to the pre-stress hollow square pile of a specific embodiment of the present utility model, 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 bevel for welding 32, has therefore strengthened the fastness that pile connects.
In another specific embodiment, described skeleton master muscle 11 is parallel with the pile body outline line.
Fig. 3 is the vertical view according to the pre-stress hollow square pile of a specific embodiment of the present utility model; Fig. 5 is the A-A schematic cross-section of pre-stress hollow square pile shown in Figure 3; Fig. 6 is the C portion enlarged diagram of pre-stress hollow square pile shown in Figure 3.Shown in Fig. 3,5,6, described metal end plate 3 central authorities are and the stake identical circular hole of bore dia in the heart, are provided with through wires hole 311 and tension force hole 313 between circular hole and four limits symmetrically, and 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, 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.
Pre-stress 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.
Pre-stress 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.
Pre-stress 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 (5)
1. a pre-stress 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 pre-stress hollow square pile are provided with the metal end plate (3) that is connected with described reinforcing cage (1), and described metal end plate (3) is provided with cuff (4) with the pile body connecting portion, and described pre-stress hollow square pile profile is square, the stake heart is columnar mesopore; Four limit corners of described pre-stress hollow square pile are stress and eliminate circular arc, wherein the arc radius R1 of a pair of arc chord angle on the diagonal is greater than another arc radius R2 to arc chord angle, 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).
2. pre-stress hollow square pile according to claim 1, it is characterized in that, the profile of described metal end plate (3) is identical with the pile body profile of described pre-stress hollow square pile, four limits of described metal end plate (3) are provided with bevel for welding (32), central authorities are circular holes identical with the median pore diameter of described pre-stress hollow square pile, are provided with through wires hole (311) and tension force hole (313) symmetrically between four limits of described circular hole and described metal end plate (3).
3. pre-stress hollow square pile according to claim 2 is characterized in that, described tension force hole (313) links to each other with described through wires hole (311) by muscle groove (312).
4. pre-stress hollow square pile according to claim 3 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, and described through wires hole (311) is a counter sink.
5. pre-stress hollow square pile according to claim 4 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, and described rod iron and described metal end plate (3) junction have heading.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120114900 CN202031083U (en) | 2011-04-19 | 2011-04-19 | Prestress hollow square pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120114900 CN202031083U (en) | 2011-04-19 | 2011-04-19 | Prestress hollow square pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202031083U true CN202031083U (en) | 2011-11-09 |
Family
ID=44893385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120114900 Ceased CN202031083U (en) | 2011-04-19 | 2011-04-19 | Prestress hollow square pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202031083U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561340A (en) * | 2012-01-09 | 2012-07-11 | 盐城市双强管桩有限公司 | Prestressed concrete solid square pile and making method thereof |
| CN103061336A (en) * | 2013-02-26 | 2013-04-24 | 强力投资控股集团股份有限公司 | Sectioned type fully-pre-stressed concrete solid square pile |
-
2011
- 2011-04-19 CN CN 201120114900 patent/CN202031083U/en not_active Ceased
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102561340A (en) * | 2012-01-09 | 2012-07-11 | 盐城市双强管桩有限公司 | Prestressed concrete solid square pile and making method thereof |
| CN102561340B (en) * | 2012-01-09 | 2014-08-13 | 盐城市双强管桩有限公司 | Prestressed concrete solid square pile and making method thereof |
| CN103061336A (en) * | 2013-02-26 | 2013-04-24 | 强力投资控股集团股份有限公司 | Sectioned type fully-pre-stressed concrete solid square pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20131129 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: 22395 Granted publication date: 20111109 |