CN216586511U - High-strength concrete bearing body with reserved hole and pressure type anti-floating pile - Google Patents
High-strength concrete bearing body with reserved hole and pressure type anti-floating pile Download PDFInfo
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- CN216586511U CN216586511U CN202123405588.3U CN202123405588U CN216586511U CN 216586511 U CN216586511 U CN 216586511U CN 202123405588 U CN202123405588 U CN 202123405588U CN 216586511 U CN216586511 U CN 216586511U
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- 239000011372 high-strength concrete Substances 0.000 title claims abstract description 100
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 239000004567 concrete Substances 0.000 claims abstract description 38
- 239000011148 porous material Substances 0.000 claims abstract description 15
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 238000001125 extrusion Methods 0.000 claims description 11
- 239000002861 polymer material Substances 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 16
- 238000010276 construction Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007907 direct compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
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Abstract
The utility model relates to a reserve high-strength concrete supporting body of pore and because anti floating pile of this supporting body. Reserve the high-strength concrete supporting body in pore includes: the high-strength concrete body is made of high-strength concrete or high-strength steel pipe concrete, is in the shape of a cylinder or a cone at the lower part of an upper cylinder, and is provided with a plurality of reserved holes from top to bottom in a penetrating manner, and the reserved holes allow the unbonded steel stranded wires to pass through; the pressure-bearing anchor plate is arranged at the bottom end or inside the high-strength concrete body, is made of a metal material, and is correspondingly provided with a plurality of through holes; an orientation member disposed at a top end of the high strength concrete body; when the high-strength concrete body is made of high-strength steel pipe concrete, the high-strength concrete body comprises an outer steel pipe and inner high-strength concrete. And the pressure type anti-floating pile comprises the high-strength concrete bearing body.
Description
Technical Field
The application relates to anti-floating design and construction of buildings, municipal works, underground works and high-rise structures in construction engineering, in particular to a high-strength concrete bearing body with reserved channels and an anti-floating pile based on the bearing body.
Background
At present, the main treatment methods for solving the anti-floating problem of underground buildings include an anti-floating plate method, a ballast method, a drainage pressure limiting method, a water-resisting pressure control method, a water-draining pressure reduction method, an anti-floating anchor rod method, an anti-floating pile method and the like. In practical engineering, the anti-floating pile method or anti-floating anchor rod method is the most common method for solving the anti-floating problem.
The pressure type anti-floating anchor rod that frequently adopts at present, because the bearing plate area is little, the anti-floating pressure that the bearing plate provided is less, and the anchor rod slip casting body is grout or cement mortar of on-the-spot preparation, and intensity is low and receive various preparation factors on-the-spot to influence seriously, can't ensure body of rod intensity requirement, and can't carry out quality detection to the anchor rod body of rod, the anchor rod anti-floating bearing capacity condition that can not satisfy the design requirement often appears in the engineering, uses in actual engineering and receives more and more restriction. The conventional anti-floating pile scheme is limited by the width of cracks, so that the reinforcing steel bar rate is high, the manufacturing cost is high, and the anti-floating pile is a tensile member, so that the application range is more and more limited.
From the above analysis, it can be known that the pressure type anti-floating pile will become the mainstream method for solving the problem of foundation anti-floating in the future, and therefore, there is an urgent need to develop a novel anti-floating pile with the advantages of reliable quality, convenient construction, good durability, low cost, capability of quality detection, and the like.
The bearing bodies adopted by the existing pressure type anti-floating anchor rods and anti-floating piles are mainly steel anchor plates, combined steel anchor plates and the like, and the implementation method is usually to put the pressure-bearing anchor plates into rod body materials or pile body materials. The biggest weakness is that the compressive bearing capacity of the anti-floating member is directly limited by the actual construction quality of the rod or pile material above the anchor plate. The rod body or the pile body material is formed by in-situ preparation and pouring, various factors in construction can influence the construction quality of the rod body or the pile body material, so that the bearing discreteness of the anti-floating anchor rod or the anti-floating pile in engineering is often very large, the condition of insufficient bearing capacity often occurs, and the engineering application of the pressure type anti-floating pile and the anti-floating anchor rod is greatly limited.
SUMMERY OF THE UTILITY MODEL
In order to adapt to market demand and solve anti superficial problem effectively, the utility model provides a reserve pore high-strength concrete supporting body for found pressure type anti floating pile.
The utility model provides a reserve pore high-strength concrete supporting body, it includes: the high-strength concrete body is made of high-strength concrete or high-strength steel pipe concrete, is in a cylindrical shape or a conical shape (bullet head shape) at the lower part of an upper cylinder, and penetrates through a plurality of reserved pore channels from top to bottom; the pressure-bearing anchor plate is arranged at the bottom end or inside the high-strength concrete body, is made of a metal material, and is correspondingly provided with a plurality of through holes; the conical bottom is arranged below the high-strength concrete body and fixedly connected with the high-strength concrete body; an orientation member disposed at a top end of the high strength concrete body.
Preferably, the height H of the high-strength concrete body is more than or equal to the diameter of the anti-floating pile body, and the diameter of the high-strength concrete body is less than the diameter of the anti-floating pile body; when the high-strength concrete body is made of plain concrete, the strength grade is C30-C80; when the high-strength concrete body is made of high-strength steel pipe concrete, the steel pipe is arranged on the outer side of the concrete, and the strength grade of the concrete is C30-C80.
Preferably, the pressure-bearing anchor plate is a steel strand anchor plate which is reserved in advance when the high-strength concrete bearing body is poured, is an anchor member at the bottom of the pressure type anti-floating pile, and is a steel member.
The utility model discloses a based on reserve the pressure type anti-floating pile in the pore high-strength concrete supporting body can be arranged in the structure foundation, this anti-floating pile mainly comprises reservation pore high-strength concrete supporting body, unbonded steel strand wires, extrusion anchor, anti-floating pile concrete pile shaft. When the reserved hole high-strength concrete bearing body is a cylinder, the concrete bearing body also comprises a conical bottom.
Preferably, the spiral stirrup with the diameter of 6-20mm is arranged at the position above the pressure-bearing anchor plate in the high-strength concrete bearing body.
Preferably, the top of the high-strength concrete bearing body is provided with a directional member, the directional member ensures the verticality when the hammer pipe is hammered into the bearing body, and the directional member is a combined member of a steel bar, a steel pipe, an angle steel, a steel plate or an annular steel plate and the steel bar, the steel pipe or the angle steel.
Preferably, the conical bottom is arranged at the lower part of the cylindrical high-strength concrete bearing body, and the conical bottom and the cylindrical high-strength concrete bearing body are connected into a whole in a welding, riveting, cementing and pouring connection mode. The conical bottom is made of concrete, reinforced concrete, steel bars, steel or high polymer materials.
The application provides a pressure type anti-floating pile atress mechanism based on reserve pore high-strength concrete supporting body does: the application of the pressure-bearing anchor plate is directly prefabricated on the lower part or inside of the high-strength concrete bearing body or the high-strength steel pipe concrete bearing body. When the steel strand of the anti-floating pile is tensioned and locked, a direct compression area (namely a high-strength concrete body) above the pressure-bearing anchor plate at the bottom of the anti-floating pile is prefabricated high-strength concrete. The concrete strength grade of the prefabricated high-strength concrete bearing body can reach C60-C80, and the prefabricated high-strength concrete bearing body is prefabricated and processed in a factory, the strength of the high-strength concrete bearing body is very high, the quality is guaranteed, and therefore the concrete above the pressure-bearing anchor plate can have the compression strength with extremely high certainty. When the prefabricated high-strength concrete bearing body adopts high-strength steel pipe concrete, the compressive strength is higher due to the circumference constraint action of the steel pipe, and the concrete above the bearing anchor plate can also be ensured to have extremely high compressive strength with certainty.
The stress spread angle of the edge line of the compressive stress above the anchor plate is alpha (usually 45 degrees), the stress spread angle extends to the bearing surface of the pile edge and consists of two parts, wherein one part is arranged in the prefabricated high-strength concrete bearing body (the concrete of the part has high compressive strength), and the other part is arranged in the pile body concrete at the periphery of the bearing body. In the process of lowering the bearing body by the vibrating hammer, concrete in the pile body around the bearing body is vibrated and compacted, so that the compactness and strength of the concrete around the prefabricated bearing body can be ensured, and the stress surface is ensured to have deterministic compressive strength and reliability.
The bearing body is arranged in the concrete of the pile body, the pressure-resistant bearing capacity of the upper section of the bearing body is provided by the whole section of the pile body, and the sectional area of the large-diameter pile body is enough to meet the pressure-resistant requirement.
Through the analysis of the stress mechanism, the high-strength concrete bearing body put into the anti-floating pile concrete pile body has extremely high pressure-resistant stress characteristic, the quality is reliable, the pressure-resistant bearing capacity requirements of the pressure-bearing anchor plate and the pile body section can be met assuredly, and the pressure-resistant bearing capacity of the pressure-type anti-floating pile pressure-bearing anchor plate is ensured to have certainty reliability.
According to the utility model discloses a solution has a great deal of beneficial effect. Specifically, the method comprises the following steps: 1) due to the high strength of the bearing body and the force transmission mode of the bearing body, the anti-floating pile does not generate cracks in the using process, and the crack width of the pile body does not need to be checked; 2) because the bearing body is prefabricated, the installation is simple and convenient, the quality is reliable, the site operation speed is high, and the construction period is greatly saved; 3) the construction cost is low, the main reinforcement of the high-strength concrete bearing body pressure type anti-floating pile with the reserved hole is made of high-strength unbonded steel stranded wires, the tensile strength of the steel stranded wires is high, a large amount of steel can be saved compared with that of a common uplift pile, and the construction cost can be saved by 30% -60%; compared with the common anchor rod, the construction cost can be saved by 20-50%; 4) the high-strength concrete bearing body is a prefabricated high-strength concrete member, the compressive strength is high, the quality is reliable, the bearing anchor plate is arranged in the high-strength concrete bearing body, and the bearing capacity of the anti-floating pile is not limited by the construction quality of the concrete of the pile body; 5) the waterproof effect is good, and the waterproof problem of the pile head and the bottom plate can be effectively solved; 6) the bearing anchor plate is arranged in the high-strength concrete bearing body, and pile body concrete is wrapped outside the bearing body, so that the bearing anchor plate is equivalently protected doubly and has good durability; 7) the anti-floating anchor rod can not carry out body of rod quality detection, and reserve pore high-strength concrete supporting body pressure type anti-floating pile can carry out quality detection, the construction quality control of being convenient for to the pile body according to the pile foundation requirement.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a high-strength plain concrete carrier with reserved holes according to the present invention;
fig. 2 is a schematic view of a high-strength steel pipe concrete carrier with reserved channels according to the present invention;
figure 3 is a schematic view of the tapered bottom of the carrier;
FIG. 4 is a schematic view of the installation of the high-strength concrete supporting body with reserved channels;
FIG. 5 is a schematic view of a bullet head type reserved channel high-strength concrete bearing body;
fig. 6 is a schematic view of the installation of the bullet-shaped reserved-channel high-strength concrete bearing body.
Description of reference numerals: 1-high-strength concrete body, 2-reserved pore channel, 3-pressure-bearing anchor plate, 4-directional member, 5-unbonded steel strand, 6-extrusion anchor, 7-conical bottom and 8-outer steel tube.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
Fig. 1 and fig. 2 show an embodiment of the high-strength concrete carrier with reserved holes of the present invention, in this embodiment, the carrier is composed of a high-strength concrete body 1 (fig. 1 is plain concrete, fig. 2 is concrete-filled steel tube), reserved holes 2, bearing anchor plates 3, directional members 4 and outer steel tubes 8, which are cylindrical in shape.
The high-strength concrete body 1 is formed by casting in advance, the strength grade of the concrete is C30-C80, and a pore channel 2 is reserved in the high-strength concrete body during casting and is used for inserting and tensioning steel strands in the later period; the pressure-bearing anchor plate 3 is a steel strand anchor plate which is reserved in advance when the high-strength concrete body 1 is poured, and is a pressure type anti-floating pile bottom anchor member; meanwhile, the top of the high-strength concrete bearing body 1 is reserved with the directional component 4 in advance when pouring.
Referring to fig. 3, the conical bottom 7 is arranged at the lower part of the cylindrical high-strength concrete bearing body, and the conical bottom and the cylindrical high-strength concrete bearing body are connected into a whole through welding, riveting, cementing and pouring connection modes. The conical bottom 7 is made of concrete, reinforced concrete, steel bars, steel or high polymer materials.
Referring to fig. 4, the unbonded steel strand 5 with the extrusion anchor 6 installed passes through the reserved hole 2 at the bottom of the cylindrical reserved hole high-strength concrete bearing body, the extrusion anchor 6 is arranged below the pressure-bearing anchor plate 3, the extrusion anchor 6 is guaranteed to be vertically contacted with the plane of the end part of the pressure-bearing anchor plate 3, and the conical bottom 7 is installed below the bearing body. The cylinder type reserved channel high-strength concrete bearing body, the unbonded steel strand 5, the extrusion anchor 6 and the conical bottom 7 are installed into a bullet head type complex body attached with the steel strand.
Fig. 5 shows another version of the high-strength concrete supporting body of the present invention. In this form, the cylindrical high-strength concrete body 1 is integrated with the tapered bottom 7, and is referred to as a bullet-head-type reserved-channel high-strength concrete carrier. In this version, the conical bottom 7 is part of the support, i.e. the high-strength concrete support is composed of the high-strength concrete body 1, the preformed duct 2, the pressure-bearing anchor plate 3, the directional member 4 and the conical bottom 7.
The high-strength concrete bearing body 1 is of a bullet head type and is formed by casting in advance, the concrete strength grade is C30-C80, and a pore channel 2 is reserved in the high-strength concrete bearing body when the high-strength concrete bearing body is cast for inserting and tensioning steel strands in the later period; the pressure-bearing anchor plate 3 is a steel strand anchor plate which is reserved in advance when the bearing body is poured, and is a pressure type anti-floating pile bottom anchor component.
Referring to fig. 6, the unbonded steel stranded wire 5 with the installed extrusion anchor 6 passes through the reserved hole channel 2 at the bottom of the bullet head type reserved hole channel high-strength concrete bearing body, the extrusion anchor 6 is arranged below the pressure-bearing anchor plate 3, and the extrusion anchor 6 is ensured to be vertically contacted with the plane of the end part of the pressure-bearing anchor plate 3. The bullet head type reserved channel high-strength concrete bearing body, the unbonded steel stranded wire 5 and the extrusion anchor 6 are installed into a bullet head type composite body attached with the steel stranded wire.
Claims (9)
1. The utility model provides a reserve high-strength concrete supporting body in pore, its characterized in that includes:
the high-strength concrete body (1) is made of high-strength concrete or high-strength steel pipe concrete, is in the shape of a cylinder or a cone at the lower part of an upper cylinder, and is penetrated with a plurality of reserved pore channels (2) from top to bottom, and the reserved pore channels allow the unbonded steel stranded wires to pass through;
the pressure-bearing anchor plate (3) is arranged at the bottom end or inside the high-strength concrete body (1) and is made of a metal material, and a plurality of through holes are correspondingly formed in the pressure-bearing anchor plate;
an orientation member (4) provided at the top end of the high-strength concrete body (1);
when the high-strength concrete body (1) is made of high-strength steel pipe concrete, the high-strength concrete body comprises an outer steel pipe (8) and inner high-strength concrete.
2. The high-strength concrete supporting body according to claim 1, wherein the high-strength concrete body (1) is a cylinder, and further comprises a conical bottom (7) which is arranged below the high-strength concrete body (1) and is fixedly connected with the high-strength concrete body (1).
3. The high-strength concrete supporting body according to claim 2, wherein the tapered bottom (7) is correspondingly provided with a plurality of reserved holes.
4. High-strength concrete supporting body according to claim 2, characterized in that the conical bottom (7) is connected with the high-strength concrete body (1) by means of welding, riveting, gluing or pouring.
5. A high strength concrete carrier according to claim 1, characterized in that: the directional component (4) is composed of a plurality of steel bars, steel pipes, angle steels or steel plates which are vertically arranged on the end face of the high-strength concrete body (1).
6. A high strength concrete carrier according to claim 1, characterized in that: and a spiral stirrup with the diameter of 6-20mm is arranged in the high-strength concrete body (1).
7. A high strength concrete carrier according to claim 4, characterized in that: the conical bottom (7) is made of concrete, reinforced concrete, steel bars, steel or high polymer materials.
8. The utility model provides a pressure type anti-floating pile which characterized in that: a high strength concrete carrier comprising any one of claims 1 to 7, and
the plurality of unbonded steel strands (5) penetrate through the high-strength concrete body (1) through the plurality of reserved holes (2) and penetrate through the pressure-bearing anchor plate (3);
the extrusion anchor (6) is fixedly connected to the tail end of the unbonded steel strand (5), and the tail end is fixed to the bottom side of the pressure-bearing anchor plate (3);
the high-strength concrete bearing body and the unbonded steel strand (5) are arranged in the concrete of the anti-floating pile body.
9. The pressure type anti-floating pile according to claim 8, wherein: the height H of the high-strength concrete body (1) is more than or equal to the diameter of the anti-floating pile body, and the diameter of the high-strength concrete body (1) is less than the diameter of the anti-floating pile body; when the high-strength concrete body (1) is made of plain concrete, the strength grade is C30-C80; when the high-strength concrete body (1) adopts high-strength steel pipe concrete, the steel pipe is arranged on the outer side of the concrete, and the strength grade of the concrete is C30-C80.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123405588.3U CN216586511U (en) | 2021-12-31 | 2021-12-31 | High-strength concrete bearing body with reserved hole and pressure type anti-floating pile |
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| CN202123405588.3U CN216586511U (en) | 2021-12-31 | 2021-12-31 | High-strength concrete bearing body with reserved hole and pressure type anti-floating pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277786A (en) * | 2021-12-31 | 2022-04-05 | 建研地基基础工程有限责任公司 | High-strength concrete bearing body, pressure type anti-floating pile and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114277786A (en) * | 2021-12-31 | 2022-04-05 | 建研地基基础工程有限责任公司 | High-strength concrete bearing body, pressure type anti-floating pile and construction method |
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