CN211368677U - Skeleton of bored concrete pile, bored concrete pile - Google Patents
Skeleton of bored concrete pile, bored concrete pile Download PDFInfo
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- CN211368677U CN211368677U CN201921112165.2U CN201921112165U CN211368677U CN 211368677 U CN211368677 U CN 211368677U CN 201921112165 U CN201921112165 U CN 201921112165U CN 211368677 U CN211368677 U CN 211368677U
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Abstract
The utility model discloses a skeleton, bored concrete pile of bored concrete pile relates to building pile foundation engineering technical field to solve the poor problem of bored concrete pile body bearing capacity. The utility model discloses a cast-in-place pile's skeleton, including stay tube and steel reinforcement cage, the steel reinforcement cage cover is located outside the stay tube. The utility model is used for the preparation of bored concrete pile.
Description
Technical Field
The utility model relates to a building pile foundation engineering technical field especially relates to a skeleton of bored concrete pile, bored concrete pile.
Background
The traditional cast-in-place pile is formed by placing a steel reinforcement cage or profile steel in the pile and pouring concrete after forming holes by means of mechanical hole forming, manual hole digging and the like on an engineering site, and the pile foundation type is widely applied to the existing building structure. In the actual construction process, because the field, the number of piles and the like are limited, piles with smaller diameters are often required to provide larger single-pile bearing capacity to support upper building loads. How to reduce the construction difficulty and the construction cost of the cast-in-place pile while improving the bearing capacity of the cast-in-place pile body is a problem to be solved urgently in the industry.
In the prior art, in order to improve the bearing capacity of the pile body of the cast-in-place pile, measures such as improving the concrete strength of the pile body, increasing the longitudinal main reinforcement ratio, increasing the steel content of the section steel and the like can be taken. But because of the limitation of the existing materials and construction process conditions, the pile body concrete is difficult to further improve; the longitudinal main reinforcement arrangement rate is increased, so that the reinforcement spacing is small, concrete pouring is not facilitated, the steel content is increased, and the cost is further increased; increasing the steel content of the section steel will also increase the steel content, further increasing the cost.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a skeleton, bored concrete pile of bored concrete pile for solve the poor technical problem of bored concrete pile body bearing capacity.
In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a framework of a filling pile, including a supporting tube and a reinforcement cage, the reinforcement cage is sleeved outside the supporting tube.
In a second aspect, an embodiment of the present invention provides a filling pile, including interior concrete layer, outer concrete layer and the first aspect the bored concrete pile's skeleton, interior concrete layer fill with in the stay tube of skeleton, outer concrete layer is located the periphery of stay tube, and the steel reinforcement cage of skeleton is located in the outer concrete layer.
The embodiment of the utility model provides a skeleton, bored concrete pile of bored concrete pile, because the skeleton of bored concrete pile includes stay tube and steel reinforcement cage, the steel reinforcement cage cover is located outside the stay tube, therefore, the stay tube plays the restraint effect to the interior concrete layer in the intraductal, can improve the axial bearing capacity of bored concrete pile; the reinforcement cage sleeved outside the support pipe and the outer concrete layer play a role in restraining the support pipe, so that the bearing capacity of the support pipe is improved, the restraining effect of the support pipe on the inner concrete layer in the pipe is enhanced, the axial bearing capacity of the cast-in-place pile can be further improved, and the integral bearing capacity of the cast-in-place pile can be improved; and the outer concrete layer outside the supporting pipe plays a role in protecting the supporting pipe, so that the corrosion of corrosive media to the supporting pipe is reduced, and meanwhile, the supporting pipe also plays a role in protecting the inner concrete layer inside the pipe, so that the corrosion of the corrosive media to the inner concrete layer is reduced, the strength of the inner concrete layer is ensured, and the overall corrosion resistance of the cast-in-place pile is improved. Meanwhile, the framework formed by combining the supporting tube and the reinforcement cage is used for manufacturing the cast-in-place pile, and the content of the reinforcement and the steel is not increased, so that the bearing capacity of the cast-in-place pile can be improved, and the manufacturing cost of the cast-in-place pile can be kept not to be increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a horizontal sectional view of a cast-in-place pile according to an embodiment of the present invention;
FIG. 2 is a horizontal sectional view of a reinforcement cage according to an embodiment of the present invention;
FIG. 3 is a horizontal sectional view of a support tube and a connector according to an embodiment of the present invention;
FIG. 4 is a vertical cross-sectional view of a support tube in an embodiment of the present invention;
fig. 5 is a flow chart of a construction method of a cast-in-place pile according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In a first aspect, an embodiment of the present invention provides a cast-in-place pile skeleton, as shown in fig. 1, including supporting tube 1 and steel reinforcement cage 2, steel reinforcement cage 2 covers outside supporting tube 1 is located.
Wherein, the reinforcement cage 2 is formed by combining a longitudinal bar 21 and a spiral hoop 22.
The embodiment of the utility model provides a skeleton of bored concrete pile, as shown in fig. 1, because the skeleton of bored concrete pile includes stay tube 1 and steel reinforcement cage 2, steel reinforcement cage 2 cover is located outside stay tube 1, from this, stay tube 1 plays the constraint effect to intraductal inner concrete layer 3, can improve the axial bearing capacity of bored concrete pile; the reinforcement cage 2 and the outer concrete layer 4 sleeved outside the support tube 1 play a role in restraining the support tube 1, so that the bearing capacity of the support tube 1 is improved, the restraining effect of the support tube 1 on the inner concrete layer 3 in the tube is enhanced, the axial bearing capacity of the cast-in-place pile can be further improved, and the overall bearing capacity of the cast-in-place pile can be improved; and the outer concrete layer 4 outside the supporting tube 1 plays a role in protecting the supporting tube 1, so that the erosion of corrosive media to the supporting tube 1 is reduced, meanwhile, the supporting tube 1 also plays a role in protecting the inner concrete layer 3 in the tube, so that the erosion of the corrosive media to the inner concrete layer 3 is reduced, the strength of the inner concrete layer 3 is ensured, and the overall corrosion resistance of the cast-in-place pile is improved. Meanwhile, the framework formed by combining the supporting tube 1 and the reinforcement cage 2 is adopted to manufacture the cast-in-place pile, and the content of the steel bars and the steel materials is not increased, so that the bearing capacity of the cast-in-place pile can be improved, and the manufacturing cost of the cast-in-place pile can be kept not to be increased.
In the above embodiment, the position of the reinforcement cage 2 when it is sleeved outside the support tube 1 is not unique. For example, as shown in fig. 2, the reinforcement cage 2 may be disposed apart from the support tube 1 in the radial direction of the support tube 1; in addition, the reinforcement cage 2 can also be attached to the support tube 1. Compare in the laminating setting, when steel reinforcement cage 2 and stay tube 1 are separated by the setting, accomplish the back at the bored concrete pile preparation, along the radial of stay tube 1, steel reinforcement cage 2 is the middle part that is located outer concrete layer 4, can support outer concrete layer 4 better like this, can prevent outer concrete layer 4 effectively and split to the whole bearing capacity of bored concrete pile has been improved.
In order to fix the supporting tube 1 and the reinforcement cage 2 conveniently, as shown in fig. 1, the framework of the cast-in-place pile further comprises a connecting piece 5, the reinforcement cage 2 is fixedly connected with the supporting tube 1 through the connecting piece 5, so that the relative position of the supporting tube 1 and the reinforcement cage 2 can not be changed, the reinforcement cage 2 can not deflect when concrete is cast, the reinforcement cage 2 can be ensured to be positioned in the middle of the outer concrete layer 4 and the axial extending direction of the reinforcement cage 2 is kept parallel to the axial extending direction of the supporting tube 1 after the cast-in-place pile is manufactured, further, the supporting tube 1 is ensured to be stressed uniformly, and the integral bearing capacity of the cast-in-.
In the above embodiment, the structure of the connecting member 5 is not exclusive. For example, as shown in fig. 3, the connecting member 5 may be a connecting rib 51 fixedly disposed on the outer wall of the support tube 1, and the connecting rib 51 may be fixedly disposed on the outer wall of the support tube 1 by welding, snap-fit connection, or the like; the connecting rib 51 and the reinforcement cage 2 can be fixedly connected through one of welding, binding connection and buckling connection; in addition, the connecting piece 5 can also be a stud bolt, and threaded holes which are connected with the stud bolt in a matched mode are respectively formed in the supporting tube 1 and the reinforcement cage 2. Compare in stud, adopt splice bar 51 to make connecting piece 5, need not trompil on stay tube and steel reinforcement cage, avoided the problem of the stay tube 1 intensity reduction that probably causes because of the trompil.
Except the connecting rib 51 and the stud bolts, the connecting piece 5 can also be a connecting steel plate, the connecting steel plate and the supporting pipe 1 can be fixedly arranged on the outer wall of the supporting pipe 1 in a welding, buckling and connecting mode, and the connecting steel plate and the reinforcement cage 2 can be fixedly connected in a welding, buckling and connecting mode, binding and connecting mode and the like.
As shown in fig. 3 and 4, the number of the connecting ribs 51 is multiple, the multiple groups of connecting ribs 51 are arranged at intervals along the axial direction of the support tube 1, and each group includes multiple connecting ribs 51 arranged at intervals along the circumferential direction of the support tube 1. By arranging a plurality of groups of connecting ribs 51, the connection between the support tube 1 and the reinforcement cage 2 can be firmer and more reliable.
The embodiment of the utility model provides an among the skeleton of bored concrete pile, 1 shapes of stay tube are not only. For example, as shown in fig. 3, the support tube 1 may be a circular steel tube; in addition, the support tube 1 may be a rectangular steel tube or a polygonal steel tube. Compare in other shapes, circular rule relatively, the face of cylinder bearing capacity is higher, is difficult to take place buckling deformation, adopts circular stay tube 1 can more effective promotion bored concrete pile body bearing capacity.
Put after the stake hole when stay tube 1, the sediment that stays when the one deck is beaten the stake hole in the bottom of stay tube 1, after pouring concrete in stay tube 1, the interior concrete layer 3 of formation can be located softer sediment, can influence the bearing capacity on interior concrete layer 3 like this, discharge in the stay tube 1 with the sediment for the convenience, as shown in fig. 4, the utility model provides an in the skeleton of bored concrete pile, be equipped with sediment discharge hole 6 in the bottom of stay tube 1. Thus, when concrete is poured into the support pipe 1, sediment is discharged from the sediment discharge hole 6 under the pressure of the concrete, thereby avoiding affecting the bearing capacity of the concrete layer 3 in the support pipe 1.
In the framework of the cast-in-place pile provided by the above embodiment, if the opening area of the sediment discharge hole 6 is too small, the sediment in the support tube 1 is not discharged smoothly, the bearing capacity of the concrete in the support tube 1 is not fully exerted, and the strength of the cast-in-place pile is reduced; if the open area of the sediment discharge hole 6 is too large, the strength of the support tube 1 is affected, and the strength of the pile is also cast. Based on this, in order to ensure smooth discharge of the sludge without affecting the strength of the support tube 1, the open porosity of the sludge discharge holes 6 may be set to a range of 5% to 10%. The aperture ratio refers to a ratio of an area occupied by the aperture to an annular sectional area of the support tube 1 in a sectional view of the support tube 1 when the support tube 1 is cut at an aperture position.
In the framework of the cast-in-place pile provided in the above embodiment, if the ratio of the dimension H of the sediment discharge hole 6 in the axial direction of the support tube 1 to the dimension B thereof in the circumferential direction (i.e. the circumferential direction) of the support tube 1 is too large, that is, if the sediment discharge hole 6 is too thin and long, the bottom of the support tube 1 is easily subjected to buckling deformation, which affects the strength of the support tube 1, and further causes the strength of the cast-in-place pile to be reduced; if the ratio is too small, the area of the sludge discharge holes 6 is too small, which affects smooth discharge of the sludge from the support pipe 1. Therefore, in order to ensure that the strength of the support tube 1 is not affected in the case of a smooth sludge discharge, the dimension H of the sludge discharge openings 6 in the axial direction and the dimension B in the circumferential direction of the support tube 1 should satisfy B.ltoreq.H.ltoreq.1.5B. Among them, B is usually set to 50mm in consideration of the porosity and the effect of discharging sediment.
As shown in fig. 4, the number of the sludge discharge holes 6 may be plural, and the plurality of the sludge discharge holes 6 are arranged at intervals in the circumferential direction of the support pipe 1. By providing a plurality of sludge discharge openings 6, the sludge in the support tube 1 can be discharged from the support tube 1 more easily. In a second aspect, as shown in fig. 1, an embodiment of the present invention provides a cast-in-place pile, including the inner concrete layer 3, the outer concrete layer 4 and the skeleton of the cast-in-place pile in the first aspect, the inner concrete layer 3 is filled in the supporting tube 1 of the skeleton, the outer concrete layer 4 is located at the periphery of the supporting tube 1, and the reinforcement cage 2 of the skeleton is located in the outer concrete layer 4.
The embodiment of the utility model provides a technical problem that bored concrete pile solved and the technological effect who gains, with the first aspect in the skeleton of bored concrete pile solved the technological problem and the technological effect who gains the same, no longer describe herein.
The embodiment of the utility model provides an among the bored concrete pile, the intensity level on interior concrete layer 3 can be higher than or equal to outer concrete layer 4's intensity level, and like this, interior concrete layer 3's intensity can full play, has guaranteed the bearing capacity of bored concrete pile, can reduce the size of bored concrete pile simultaneously under the condition that does not influence the bored concrete pile bearing capacity, and then reduce the material quantity.
As an implementation manner, an embodiment of the present invention provides a method for constructing a cast-in-place pile, including the following steps: as shown in figure 5 of the drawings,
s1, placing the framework of the cast-in-place pile into the pile hole;
s2, pouring first concrete into the support pipe 1 of the framework to form an inner concrete layer 3 in the support pipe 1; a second concrete is poured into the pile hole outside the support pipe 1 to form an outer concrete layer 4 outside the support pipe 1.
Wherein, because bored concrete pile can influence its intensity when placing on soft dross, consequently, in order to guarantee bored concrete pile's intensity, before placing bored concrete pile's skeleton in the stake hole, should be earlier with the sediment clean up of stake hole bottom.
The embodiment of the utility model provides a construction method of bored concrete pile, under the condition that the sediment discharge hole 6 was seted up to the bottom of stay tube 1, step S2 still includes: and pouring first concrete into the support pipe 1, and pouring second concrete into a pile hole outside the support pipe 1 when the height of the first concrete reaches a preset value. Therefore, sediment at the bottom of the support pipe 1 can be extruded out of the support pipe 1 through the sediment discharge hole 6 under the pressure action of the first concrete, and floats to the ground along with the second concrete poured outside the support pipe 1, and the bearing capacity of the inner concrete layer 3 which mainly provides axial bearing capacity after pile forming is fully exerted. Wherein, the preset value can be set as the position of the pipe wall of the supporting pipe 1 0.5m away from the pile bottom of the cast-in-place pile.
The features of the embodiment of the method for constructing a cast-in-place pile that are the same as or similar to those of the embodiment of the cast-in-place pile may be referred to the description of the embodiment of the cast-in-place pile, and are not described herein again.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The framework of the cast-in-place pile is characterized by comprising a supporting pipe and a reinforcement cage, wherein the reinforcement cage is sleeved outside the supporting pipe;
the reinforcement cage is arranged at a distance from the support tube along the radial direction of the support tube;
the cast-in-place pile framework further comprises a connecting piece, and the reinforcement cage is fixedly connected with the supporting tube through the connecting piece.
2. The cast-in-place pile framework of claim 1, wherein the connecting piece is a connecting rib or a connecting steel plate fixedly arranged on the outer wall of the supporting tube, and the connecting rib or the connecting steel plate is fixedly connected with the reinforcement cage through one of welding, binding connection and buckling connection.
3. A framework of a cast-in-place pile according to claim 1 or 2, characterised in that the support tube is a round steel tube.
4. The framework of a bored concrete pile according to claim 1 or 2, wherein a sediment discharge hole is opened at the bottom of the support tube.
5. The cast-in-place pile framework of claim 4, wherein the open porosity of the sediment discharge hole ranges from 5% to 10%.
6. The cast-in-place pile framework of claim 4, wherein the sediment discharge hole has a dimension H in the axial direction of the support pipe and a dimension B in the circumferential direction of the support pipe, and H and B satisfy: h is more than or equal to B and less than or equal to 1.5B.
7. A cast-in-place pile, characterized in that, includes interior concrete layer, outer concrete layer and the skeleton of any one of claims 1 ~ 6 the cast-in-place pile, interior concrete layer pack in the stay tube of skeleton, outer concrete layer is located the periphery of stay tube, and the steel reinforcement cage of skeleton is located in the outer concrete layer.
8. Cast-in-place pile according to claim 7, characterised in that the inner concrete layer has a strength grade higher than or equal to the strength grade of the outer concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921112165.2U CN211368677U (en) | 2019-07-16 | 2019-07-16 | Skeleton of bored concrete pile, bored concrete pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921112165.2U CN211368677U (en) | 2019-07-16 | 2019-07-16 | Skeleton of bored concrete pile, bored concrete pile |
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| CN211368677U true CN211368677U (en) | 2020-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409429A (en) * | 2019-07-16 | 2019-11-05 | 悉地国际设计顾问（深圳）有限公司 | A kind of skeleton of bored concrete pile, bored concrete pile and its construction method |
| CN113756289A (en) * | 2021-09-02 | 2021-12-07 | 中铁二十局集团第三工程有限公司 | Steel reinforcement cage and fender pile construction method |
-
2019
- 2019-07-16 CN CN201921112165.2U patent/CN211368677U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409429A (en) * | 2019-07-16 | 2019-11-05 | 悉地国际设计顾问（深圳）有限公司 | A kind of skeleton of bored concrete pile, bored concrete pile and its construction method |
| CN113756289A (en) * | 2021-09-02 | 2021-12-07 | 中铁二十局集团第三工程有限公司 | Steel reinforcement cage and fender pile construction method |
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