CN211872968U - Cast-in-place prestressed concrete pile foundation - Google Patents
Cast-in-place prestressed concrete pile foundation Download PDFInfo
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- CN211872968U CN211872968U CN202020201130.2U CN202020201130U CN211872968U CN 211872968 U CN211872968 U CN 211872968U CN 202020201130 U CN202020201130 U CN 202020201130U CN 211872968 U CN211872968 U CN 211872968U
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- Prior art keywords
- pit
- micro
- reinforcing bar
- cast
- foundation
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- 239000011513 prestressed concrete Substances 0.000 title claims abstract description 26
- 239000004567 concrete Substances 0.000 claims abstract description 21
- 238000011065 in-situ storage Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 33
- 238000004873 anchoring Methods 0.000 claims description 33
- 239000002689 soil Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 abstract description 28
- 238000010276 construction Methods 0.000 abstract description 9
- 101150054854 POU1F1 gene Proteins 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 1
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009434 installation Methods 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
- 238000003466 welding Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a cast in situ's prestressed concrete pile basis, it is including removing the foundation pit of filling out, vertical many vertical miniature holes of seting up are followed in the bottom of foundation pit, all with seting up many miniature holes of slope along circumference on the lateral wall that the foundation pit is close to the bottom, set up the cushion cap reinforcing bar in the foundation pit, top at the cushion cap reinforcing bar is connected with the stand reinforcing bar, the top that sets up first miniature hole reinforcing bar and first miniature hole reinforcing bar in vertical miniature hole is connected bottom the cushion cap reinforcing bar, the top that sets up second miniature hole reinforcing bar and the miniature hole reinforcing bar of second in the miniature hole of slope is connected with cushion cap reinforcing bar side, cushion cap reinforcing bar and stand reinforcing bar department and vertical miniature hole in the foundation pit, the cast in situ concrete in the miniature hole of slope. The utility model discloses a cast in situ need not be under construction with the help of large-scale mechanical equipment cooperation, has stronger vertical bearing capacity and horizontal bearing capacity, can effectively prevent prestressed concrete pile foundation from taking place the slope simultaneously.
Description
Technical Field
The utility model relates to a prestressed concrete pile basis especially relates to a cast in situ's prestressed concrete pile basis.
Background
At present, for large or ultra-large equipment, such as wind power generators, wind turbines, power transmission lines, street lighting and signal devices, bridge supports, commercial signboards, highway signboards, ski lift cable cars and the like, prestressed concrete pile foundations are mostly adopted as fixing structures. However, the existing prestressed concrete pile foundation is usually installed on site by using prefabricated members, and the prefabricated members have large weight, so that the on-site installation needs machinery such as large vehicles, cranes and the like to be matched for construction, and the requirement on the foundation condition on the site is high.
Therefore, it is required to design a new foundation structure of a prestressed concrete pile.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at prior art not enough, provide a cast in situ's prestressed concrete pile basis, adopt the cast in situ, need not cooperate the construction with the help of large-scale mechanical equipment, have stronger vertical bearing capacity and horizontal bearing capacity, can effectively prevent prestressed concrete pile basis simultaneously and take place the slope.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a cast-in-place's prestressed concrete pile basis, including the foundation pit of removing the fill, set up many vertical miniature pits along vertical in the bottom of foundation pit, all with set up many miniature pits of slope along circumference on the lateral wall that the foundation pit is close to the bottom, set up the cushion cap reinforcing bar in the foundation pit, be connected with the stand reinforcing bar at the top of cushion cap reinforcing bar, the top that sets up first miniature pit reinforcing bar and first miniature pit reinforcing bar in vertical miniature pit is connected with cushion cap reinforcing bar bottom, the top that sets up second miniature pit reinforcing bar and second miniature pit reinforcing bar in the miniature pit of slope is connected with cushion cap reinforcing bar side, at the cushion cap reinforcing bar and the stand reinforcing bar department and vertical miniature pit of foundation pit, cast-in-place concrete in the miniature pit of slope.
Further, the number of the vertical micro pits is 2-8.
Further, the number of the inclined micro pits is 3-8.
Furthermore, the top of the upright post steel bar is provided with a butt plate and is provided with a pile end anchoring bar.
Furthermore, the top of the bearing platform steel bar is provided with an annular anchoring plate, a micro pit anchoring rib is arranged in the vertical micro pit, and the upper end of the micro pit anchoring rib extends out of the top of the annular anchoring plate.
And further, after the concrete is poured on site, a compacted backfill soil layer is arranged above the bearing platform steel bars.
Further, the included angle between the inclined micro pits and the vertical micro pits is 30-70 degrees.
The utility model has the advantages that:
the utility model provides a pre-stressed concrete pile foundation poured on site, which aims at the problem that the prior pre-stressed concrete pile foundation usually adopts prefabricated parts to be installed on site, the prefabricated parts need machinery such as large vehicles and cranes for cooperating and construction due to larger weight, and the requirement on the site foundation condition is high, and the pre-stressed concrete pile foundation poured on site is provided, which comprises a foundation pit for removing filling soil, a plurality of vertical micro pits are vertically arranged at the bottom of the foundation pit, a plurality of inclined micro pits are arranged on the side wall of the foundation pit close to the bottom along the circumferential direction, bearing platform reinforcing steel bars are arranged in the foundation pit, upright reinforcing steel bars are connected with the top of the bearing platform reinforcing steel bars, first micro pit reinforcing steel bars are arranged in the vertical micro pits, the top of the first micro pit reinforcing steel bars is connected with the bottom of the bearing platform reinforcing steel bars, second micro pit reinforcing steel bars are arranged in the inclined micro pits, and the top of, and concrete is poured on site at the positions of the bearing platform reinforcing steel bars and the upright post reinforcing steel bars of the foundation pit and in the vertical micro pit and the inclined micro pit.
The utility model provides a cushion cap reinforcing bar, stand reinforcing bar, first miniature hole reinforcing bar and the miniature hole reinforcing bar of second all adopt the steel reinforcement cage structure among the prior art, and this steel reinforcement cage structure includes longitudinal reinforcement, spiral stirrup and stiffening ring, also can be including the dado reinforcing bar. In addition, the annular anchoring plate is a common annular plate, or an annular plate with a through hole allowing concrete to fall is arranged at the upper part of the annular anchoring plate.
In addition, in order to increase the strength of the bearing platform steel bars and the first micro pit steel bars after concrete is cast on site, the micro pit anchoring bars are configured in the vertical micro pits before the concrete is cast on site, after the concrete is cast on site, the top of the bearing platform steel bars is provided with the annular anchoring plate, and the upper ends of the micro pit anchoring bars extend out of the annular anchoring plate.
In addition, in order to further improve the stability of the pile foundation after concrete is poured, after the concrete is poured on site, a backfill soil layer after compaction is arranged above the reinforcing steel bars of the bearing platform, the compaction backfill soil layer is good in compactness and large in weight, and can provide larger pressure for the bearing platform, so that the integral stability of the pile foundation is better.
The utility model discloses a cast in situ need not be under construction with the help of large-scale mechanical equipment cooperation, has stronger vertical bearing capacity and horizontal bearing capacity, can effectively prevent prestressed concrete pile foundation from taking place the slope simultaneously.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
reference numerals:
a foundation pit 1;
vertical micro pits 2;
a tilted micro-pit 3;
a cushion cap steel bar 4;
upright column steel bars 5;
a first micro-pit reinforcing steel bar 6;
a second micro-pit reinforcing steel bar 7;
a butt plate 8;
pile end anchoring ribs 9;
a ring-shaped anchoring plate 10;
a micro pit anchoring rib 11;
a backfill layer 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to fig. 1 and fig. 2 of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
Example one
As shown in figure 1, the cast-in-place prestressed concrete pile foundation comprises a foundation pit 1 with filling removed, a plurality of vertical micro pits 2 are vertically formed in the bottom of the foundation pit 1, a plurality of inclined micro pits 3 are circumferentially formed in the side wall, close to the bottom, of the foundation pit 1, bearing platform reinforcing steel bars 4 are arranged in the foundation pit 1, stand column reinforcing steel bars 5 are connected to the tops of the bearing platform reinforcing steel bars 4, first micro pit reinforcing steel bars 6 are arranged in the vertical micro pits 2, the tops of the first micro pit reinforcing steel bars 6 are connected with the bottoms of the bearing platform reinforcing steel bars 4, second micro pit reinforcing steel bars 7 are arranged in the inclined micro pits 3, the tops of the second micro pit reinforcing steel bars 7 are connected with the side faces of the bearing platform reinforcing steel bars 4, and concrete is cast-in-place in the vertical micro pits 2 and the inclined micro pits 3 at the positions of the bearing platform reinforcing steel bars 4 and the stand column reinforcing.
Wherein the number of the vertical micro pits 2 is 2.
Wherein the number of the inclined micro pits 3 is 3.
In addition, the top of the column steel bar 5 is provided with a butt plate 8 and is provided with a pile end anchoring bar 9.
The cushion cap reinforcing steel bars, the stand reinforcing steel bars, the first micro pit reinforcing steel bars and the second micro pit reinforcing steel bars in the embodiment all adopt a reinforcement cage structure in the prior art, and the reinforcement cage structure comprises longitudinal reinforcing steel bars, spiral stirrups and stiffening rings and also can comprise retaining wall reinforcing steel bars.
In addition, the number of the vertical micro pits is 2, and of course, more vertical micro pits can be provided according to actual needs, for example, 3, 4, 5, 6, 7, 8 and the like, and the specific number can be configured appropriately according to the scale size of the column foundation. Meanwhile, the number of the inclined micro pits is not limited to 3, and more number can be set according to actual needs, such as 4, 5, 6, 7, 8 and the like, and the specific number can be configured appropriately according to the scale size of the column foundation. The pile foundation in the embodiment is cast in situ, large mechanical equipment is not needed for construction, the vertical bearing capacity and the horizontal bearing capacity are stronger, and meanwhile, the prestressed concrete pile foundation can be effectively prevented from inclining.
Example two
As shown in fig. 2, a cast-in-place prestressed concrete pile foundation includes a foundation pit 1 with filling removed, a plurality of vertical micro pits 2 are vertically arranged at the bottom of the foundation pit 1, a plurality of inclined micro pits 3 are circumferentially arranged on the side wall of the foundation pit 1 close to the bottom, bearing platform steel bars 4 are arranged in the foundation pit 1, stand column steel bars 5 are connected to the top of the bearing platform steel bars 4, first micro pit steel bars 6 are arranged in the vertical micro pits 2, the top of the first micro pit steel bars 6 is connected to the bottom of the bearing platform steel bars 4, second micro pit steel bars 7 are arranged in the inclined micro pits 3, the top of the second micro pit steel bars 7 is connected to the side of the bearing platform steel bars 4, and the positions of the bearing platform steel bars 4 and the stand column steel bars 5 of the foundation pit 1, and cast-in-place concrete in the vertical micro pits 2 and the inclined micro pits 3.
Wherein the number of the vertical micro pits 2 is 3.
Wherein the number of the inclined micro pits 3 is 3.
In addition, the top of the column steel bar 5 is provided with a butt plate 8 and is provided with a pile end anchoring bar 9.
In addition, the top of the bearing platform reinforcing steel bar 4 is provided with an annular anchoring plate 10, a micro pit anchoring rib 11 is arranged in the vertical micro pit 2, and the upper end of the micro pit anchoring rib 11 extends out of the top of the annular anchoring plate 10.
In addition, after the concrete is poured on site, a compacted backfill layer 12 is arranged above the bearing platform reinforcing steel bars 4.
In this embodiment, in order to increase the strength of the bearing platform steel bar and the first micro pit steel bar after the concrete is cast in situ, before the concrete is cast in situ, the micro pit anchoring bar is configured in the vertical micro pit, after the concrete is cast in situ, the annular anchoring plate is arranged at the top of the bearing platform steel bar, and the upper end of the micro pit anchoring bar extends out of the annular anchoring plate.
In addition, in order to further improve the stability of the pile foundation after concrete is poured, after the concrete is poured on site, a compacted backfill soil layer is arranged above the reinforcing steel bars of the bearing platform, the compacted backfill soil layer is good in compactness and heavy in weight, and can provide larger pressure for the bearing platform, so that the integral stability of the pile foundation is better.
In addition, the included angle between the inclined micro pits and the vertical micro pits is 30 degrees, the purpose of limiting the included angle between the inclined micro pits and the vertical micro pits is to limit the arrangement angle of the inclined micro pits, and the existence of the inclination angle of the inclined micro pits can provide a horizontal bearing capacity for the pile foundation and improve the integral horizontal stress strength, so that the bending strength of the pile foundation is effectively improved, and the prestressed concrete pile foundation is effectively prevented from inclining; obviously, the included angle between the inclined micro pit and the vertical micro pit is not limited to 30 degrees, and can be set to other angles, and in order to consider the construction efficiency, the angle is preferably set to be 30-70 degrees, so that the construction is convenient, and the aim of improving the integral bending strength is fulfilled.
The utility model discloses a construction method: firstly, digging a foundation pit, then, forming a plurality of inclined micro pits on the side wall of the foundation pit close to the bottom along the circumferential direction, and then, digging a vertical micro pit at the bottom of the foundation pit; after the foundation is dug, the manufactured first micro pit steel bars and the manufactured second micro pit steel bars are respectively placed in the vertical micro pit and the inclined micro pit, then the manufactured bearing platform steel bars and the manufactured upright post steel bars are placed in the foundation pit, the first micro pit steel bars and the second micro pit steel bars are respectively and fixedly connected at the contact positions of the bearing platform steel bars, the fixed connection can be realized by adopting a binding or welding method, and concrete is poured on site after the pile end anchoring bars and the micro pit anchoring bars are placed; and (4) carrying out prestressed anchorage on the pile end anchoring rib and the miniature pit anchoring rib after the on-site pouring is finished, and finally backfilling above the bearing platform.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The utility model provides a cast in situ's prestressed concrete pile basis which characterized in that: comprises a foundation pit (1) for removing filled soil, a plurality of vertical micro pits (2) are vertically arranged at the bottom of the foundation pit (1), a plurality of inclined micro pits (3) are arranged on the side wall of the foundation pit (1) close to the bottom along the circumferential direction, a bearing platform steel bar (4) is arranged in the foundation pit (1), the top of the bearing platform steel bar (4) is connected with an upright post steel bar (5), a first micro pit steel bar (6) is arranged in the vertical micro pit (2), the top of the first micro pit steel bar (6) is connected with the bottom of the bearing platform steel bar (4), a second micro pit steel bar (7) is arranged in the inclined micro pit (3), the top of the second micro pit steel bar (7) is connected with the side surface of the bearing platform steel bar (4), concrete is poured on site at the positions of the bearing platform reinforcing steel bars (4) and the upright post reinforcing steel bars (5) of the foundation pit (1) and in the vertical micro pit (2) and the inclined micro pit (3).
2. A cast-in-place prestressed concrete pile foundation as claimed in claim 1, wherein: the number of the vertical micro pits (2) is 2-8.
3. A cast-in-place prestressed concrete pile foundation as claimed in claim 1, wherein: the number of the inclined micro pits (3) is 3-8.
4. A cast-in-place prestressed concrete pile foundation as claimed in claim 1, wherein: the top of the upright post steel bar (5) is provided with a butt plate (8) and a pile end anchoring bar (9).
5. A cast-in-place prestressed concrete pile foundation as claimed in any one of claims 1 to 4, wherein: the top of the bearing platform steel bar (4) is provided with an annular anchoring plate (10), the vertical micro pit (2) is internally provided with a micro pit anchoring rib (11), and the upper end of the micro pit anchoring rib (11) extends out of the top of the annular anchoring plate (10).
6. A cast-in-place prestressed concrete pile foundation as claimed in claim 1, wherein: after the concrete is poured on site, a compacted backfill soil layer (12) is arranged above the bearing platform steel bars (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020201130.2U CN211872968U (en) | 2020-02-24 | 2020-02-24 | Cast-in-place prestressed concrete pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020201130.2U CN211872968U (en) | 2020-02-24 | 2020-02-24 | Cast-in-place prestressed concrete pile foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211872968U true CN211872968U (en) | 2020-11-06 |
Family
ID=73252012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020201130.2U Expired - Fee Related CN211872968U (en) | 2020-02-24 | 2020-02-24 | Cast-in-place prestressed concrete pile foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211872968U (en) |
-
2020
- 2020-02-24 CN CN202020201130.2U patent/CN211872968U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201106 |