CN103806441A - Uplift pile with gradually-changing pulling force - Google Patents
Uplift pile with gradually-changing pulling force Download PDFInfo
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- CN103806441A CN103806441A CN201410089945.5A CN201410089945A CN103806441A CN 103806441 A CN103806441 A CN 103806441A CN 201410089945 A CN201410089945 A CN 201410089945A CN 103806441 A CN103806441 A CN 103806441A
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- uplift pile
- vertical muscle
- pulling force
- pile
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Abstract
The invention discloses an uplift pile with gradually-changing pulling force. The uplift pile comprises a steel reinforcement cage formed by reinforcement stirrups and longitudinal bars, and pile body concrete cast in the steel reinforcement cage, wherein the longitudinal bars are parallel to the central axes of the reinforcement stirrups and are distributed around the reinforcement stirrups; the lengths of the longitudinal bars are different; the top ends of the longitudinal bars are flush. In the use process of the uplift pile, along with the increase of depth of the position where the pile body is arranged, side resistance and uplift force of corresponding positions are all gradually reduced and the number of the longitudinal bars in the corresponding positions is reduced according to a certain proportion. Therefore, according to the uplift pile disclosed by the invention, a traditional full-length reinforcing steel bar distribution mode is changed and a mode that different numbers of steel reinforcing bars are distributed in positions in different depths is adopted; the mode accords with the characteristic that the stress of the uplift pile gradually decrease with the increase of the depth and further the stress of the uplift pile is more clear. Furthermore, under the premise of fully exerting the side resistance of the soil body on one side of the uplift pile, the purposes of reducing the material consumption of the uplift pile and reducing the cost are achieved; in addition, the uplift pile has the advantages of energy economization, high efficiency, simple construction and convenience for popularization and application.
Description
Technical field
The present invention relates to construction engineering technical field, particularly a kind of pulling force gradation type uplift pile.
Background technology
Uplift pile can be described as anti-floating pile in the time mainly bearing buoyancy force of underground water or topple load.Uplift pile is mainly born and is pulled out load by the frictional force between pile body and soil layer, and uplift pile is widely used in basement anti-floating, towering building overturning or slip resistance analysis etc.In prior art, uplift pile is in need scope to be processed, to adopt the elongated arrangement of reinforcement of pile body, and the frictional force between dependence pile body and Rock And Soil is born and pulled out load.
In practical work process, the distribution of resistance to plucking load in uplift pile pile body depth bounds has the feature of " up big and down small " unbalance stress.Thereby in the ordinary course of things, uplift pile pile body is longer, the effect of pile body bottom performance is just less, and elongated arrangement of reinforcement exists certain waste of material.
Therefore, how making uplift pile under the prerequisite of giving full play to uplift effect, avoid waste of material, is those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, the invention provides the uplift pile of a kind of pulling force gradation type, change total length arrangement of reinforcement pattern in the past, adopt the mode of deepening to reduce gradually vertical muscle quantity with the pile body degree of depth, make pile body stressed clearer and more definite, giving full play under a prerequisite of the collateral resistance of the side soil body, saved material cost.
For achieving the above object, the invention provides following technical scheme:
The uplift pile of a kind of pulling force gradation type, comprising:
Stirrup;
With the vertical muscle that the central axis of described stirrup be arranged in parallel, described vertical muscle has multiple and distributes ringwise around described stirrup, and not etc., top does not flush multiple described vertical muscle length;
Be cast in by described stirrup and described vertical muscle and assemble the pile concrete in the reinforcing cage forming.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, described stirrup has two-layer, lays respectively at the inside and outside both sides of the annular array of described vertical muscle formation.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, the top of described vertical muscle is provided with the preset length that exceeds described stirrup.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, also comprise sole plate, the top of described vertical muscle and described sole plate anchor connection.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, described sole plate is concrete floor.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, described vertical muscle is evenly arranged.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, described vertical muscle comprises the first vertical muscle, the second vertical muscle and the 3rd vertical muscle that length increases successively.
Preferably, in the uplift pile of above-mentioned pulling force gradation type, the described second vertical muscle and the described the 3rd vertical muscle interphase distribution, be provided with the described first vertical muscle between the described second vertical muscle and the described the 3rd vertical muscle.
Can find out from above-mentioned technical scheme, pulling force gradation type provided by the invention uplift pile, in use, along with the intensification of the pile body position degree of depth, the collateral resistance performance of relevant position and on pull out load and reduce gradually, meanwhile, the magnitude setting of the vertical muscle of relevant position also reduces according to a certain percentage.Visible, pulling force gradation type provided by the invention uplift pile, changes total length arrangement of reinforcement pattern in the past, at the reinforcing bar of different depth position configuration varying number, meet the loading characteristic of the suffered resistance to plucking load of uplift pile, make uplift pile stressed clearer and more definite, thereby, giving full play under a prerequisite of the collateral resistance of the side soil body, realize and reduced the material usage of uplift pile and the object reducing costs, and efficient energy-saving, construction is simple, is convenient to promote and use.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the pulling force gradation type uplift pile that Fig. 1 provides for the present invention's the first specific embodiment;
In the pulling force gradation type uplift pile that Fig. 2 provides for the second specific embodiment with Fig. 1 in the sectional view of A-A sectional position corresponding part;
In the pulling force gradation type uplift pile that Fig. 3 provides for the second specific embodiment with Fig. 1 in the sectional view of B-B sectional position corresponding part;
In the pulling force gradation type uplift pile that Fig. 4 provides for the second specific embodiment with Fig. 1 in the sectional view of C-C sectional position corresponding part.
The specific embodiment
The invention discloses the uplift pile of a kind of pulling force gradation type, change total length arrangement of reinforcement pattern in the past, adopt the mode of deepening to reduce gradually vertical muscle quantity along the pile body degree of depth, make pile body stressed clearer and more definite, giving full play under a prerequisite of the collateral resistance of the side soil body, save material cost.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 4, the structural representation of the pulling force gradation type uplift pile that Fig. 1 provides for first embodiment of the invention, in the pulling force gradation type uplift pile that Fig. 2 provides for the second specific embodiment with Fig. 1 in the sectional view of A-A sectional position corresponding part, in the pulling force gradation type uplift pile that Fig. 3 provides for the second specific embodiment with Fig. 1 in the sectional view of B-B sectional position corresponding part, in the pulling force gradation type uplift pile that Fig. 4 provides for the second specific embodiment with Fig. 1 in the sectional view of C-C sectional position corresponding part.
The pulling force gradation type uplift pile that the embodiment of the present invention provides, comprises by stirrup 2 and multiple vertical muscle 1 and assembles the reinforcing cage forming, and be cast in the pile concrete 3 in reinforcing cage.Wherein, vertical muscle 1 is parallel to the central axis of stirrup 2, and multiple vertical muscle 1 distribute ringwise around stirrup, and not etc., top does not flush the length of multiple vertical muscle 1.In use, along with the intensification of the pile body position degree of depth, the suffered uplift force in relevant position reduces the uplift pile of above-mentioned pulling force gradation type gradually, and meanwhile, the magnitude setting of vertical muscle 1 also reduces according to a certain percentage.
Can find out from technique scheme, the pulling force gradation type uplift pile that the embodiment of the present invention provides, change total length arrangement of reinforcement pattern in the past, at the reinforcing bar of different depth position configuration varying number, meet the loading characteristic of the suffered resistance to plucking load of pulling force gradation type uplift pile, make the uplift pile of pulling force gradation type stressed clearer and more definite, thereby, giving full play under a prerequisite of the collateral resistance of the side soil body, realize and reduced the material usage of pulling force gradation type uplift pile and the object reducing costs, and efficient energy-saving, construction is simple, is convenient to promote and use.
In specific embodiment, in the uplift pile of pulling force gradation type, be provided with two-layer stirrup 2, every layer of stirrup 2 is helical structure, lays respectively at the inside and outside both sides of the annular array that vertical muscle 1 forms, with the effect of playing the vertical muscle 1 of fixed constraint, bearing horizontal shear and confined concrete 3.Wherein, the stirrup that is positioned at internal layer is the stirrup of putting more energy into.Further, vertical muscle 1 is evenly arranged, and its top is provided with the preset length that exceeds stirrup 2, for sole plate (concrete floor) anchor connection.
The mode of occupation of the pulling force gradation type uplift pile that the embodiment of the present invention provides is: first carry out simple and put down, then pile-forming machine perching pore-forming clear hole; Then, vertical muscle 1 and stirrup 2 colligations form reinforcing cage, and wherein, vertical muscle 1 reduces quantity of reinforcement by stressing conditions in proportion along different depth locations, and vertical muscle 1 is positioned at the top on stake top will reserve certain length; Lay afterwards reinforcing cage; Then fluid concrete vibration compacting, maintenance, reaches after design strength requirement, together with the top of vertical muscle 1 is anchored at sole plate.
In practice of construction process, according to the needs of specific environment, magnitude setting and the length value thereof of vertical muscle 1 have multiple specific design scheme.For example, vertical muscle 1 comprises the first vertical muscle 11, the second vertical muscle 12 and the 3rd vertical muscle 13 that length increases successively, and its concrete arrangement as shown in fig. 1.But be not limited to this, for example, in the second specific embodiment, can also be according to arranging as shown in Fig. 2-Fig. 4 (wherein, Fig. 2, Fig. 3 and Fig. 4 be A-A cross section, B-B cross section and the C-C cross section of the pulling force gradation type uplift pile shown in corresponding diagram 1 respectively), even the second vertical muscle 12 and the 3rd vertical muscle 13 interphase distributions, be provided with the first vertical muscle 11 between the second vertical muscle 12 and the 3rd vertical muscle 13.
About the concrete arrangement of the multiple vertical muscle 1 of unequal length, those skilled in the art can also design other multiple concrete schemes, and therefore, the present invention is to this and be not specifically limited.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the present invention.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. the uplift pile of pulling force gradation type, is characterized in that, comprising:
Stirrup (2);
With the vertical muscle (1) that the central axis of described stirrup (2) be arranged in parallel, described vertical muscle (1) has multiple and distributes ringwise around the central axis of described stirrup (2), and not etc., top does not flush multiple described vertical muscle (1) length;
Be cast in the pile concrete (3) in the reinforcing cage being formed by described stirrup (2) and described vertical muscle (1) assembling.
2. pulling force gradation type according to claim 1 uplift pile, is characterized in that, described stirrup (2) has two-layer, lays respectively at the inside and outside both sides of the annular array of described vertical muscle (1) formation.
3. pulling force gradation type according to claim 1 uplift pile, is characterized in that, the top of described vertical muscle (1) is provided with the preset length that exceeds described stirrup (2).
4. pulling force gradation type according to claim 3 uplift pile, is characterized in that, also comprises sole plate, the top of described vertical muscle (1) and described sole plate anchor connection.
5. pulling force gradation type according to claim 4 uplift pile, is characterized in that, described sole plate is concrete floor.
6. pulling force gradation type according to claim 1 uplift pile, is characterized in that, described vertical muscle (1) is evenly arranged along ring-type stirrup.
7. pulling force gradation type according to claim 6 uplift pile, is characterized in that, described vertical muscle (1) comprises the first vertical muscle (11), the second vertical muscle (12) and the 3rd vertical muscle (13) that length increases successively.
8. pulling force gradation type according to claim 7 uplift pile, it is characterized in that, the described second vertical muscle (12) and the described the 3rd vertical muscle (13) interphase distribution, be provided with the described first vertical muscle (11) between the described second vertical muscle (12) and the described the 3rd vertical muscle (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089945.5A CN103806441A (en) | 2014-03-12 | 2014-03-12 | Uplift pile with gradually-changing pulling force |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410089945.5A CN103806441A (en) | 2014-03-12 | 2014-03-12 | Uplift pile with gradually-changing pulling force |
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| CN103806441A true CN103806441A (en) | 2014-05-21 |
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| CN201410089945.5A Pending CN103806441A (en) | 2014-03-12 | 2014-03-12 | Uplift pile with gradually-changing pulling force |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09324422A (en) * | 1996-06-04 | 1997-12-16 | Ohbayashi Corp | Cast-in-place compound pile and building method therefor |
| JP2005240504A (en) * | 2004-02-27 | 2005-09-08 | Geotop Corp | Manufacturing method for knotted concrete pile (high frictional force concrete pile) |
| CN203238626U (en) * | 2013-04-24 | 2013-10-16 | 山东同圆设计集团有限公司 | Uplift pile with reinforcing bars distributed sectionally |
| CN203238625U (en) * | 2013-04-17 | 2013-10-16 | 山东同圆设计集团有限公司 | Multi-section squeeze-expansion supporting disk uplift pile distributing ribs in segmented mode |
-
2014
- 2014-03-12 CN CN201410089945.5A patent/CN103806441A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09324422A (en) * | 1996-06-04 | 1997-12-16 | Ohbayashi Corp | Cast-in-place compound pile and building method therefor |
| JP2005240504A (en) * | 2004-02-27 | 2005-09-08 | Geotop Corp | Manufacturing method for knotted concrete pile (high frictional force concrete pile) |
| CN203238625U (en) * | 2013-04-17 | 2013-10-16 | 山东同圆设计集团有限公司 | Multi-section squeeze-expansion supporting disk uplift pile distributing ribs in segmented mode |
| CN203238626U (en) * | 2013-04-24 | 2013-10-16 | 山东同圆设计集团有限公司 | Uplift pile with reinforcing bars distributed sectionally |
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Application publication date: 20140521 |