CN215801598U - Stiff composite pile body anchor rod - Google Patents
Stiff composite pile body anchor rod Download PDFInfo
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- CN215801598U CN215801598U CN202120353434.5U CN202120353434U CN215801598U CN 215801598 U CN215801598 U CN 215801598U CN 202120353434 U CN202120353434 U CN 202120353434U CN 215801598 U CN215801598 U CN 215801598U
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- end plate
- anchor rod
- pile body
- precast concrete
- concrete pile
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- 239000002131 composite material Substances 0.000 title claims abstract description 24
- 239000011178 precast concrete Substances 0.000 claims abstract description 35
- 239000004568 cement Substances 0.000 claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 10
- 210000003205 muscle Anatomy 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000011440 grout Substances 0.000 claims 1
- 239000004567 concrete Substances 0.000 abstract description 12
- 238000010276 construction Methods 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 abstract 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 239000011083 cement mortar Substances 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a stiff composite pile anchor rod which comprises an anchor rod body and cement soil arranged on the periphery of the anchor rod body, wherein a precast concrete pile body is arranged in the cement soil, an upper end plate and a lower end plate are respectively and fixedly arranged at the upper end and the lower end of the precast concrete pile body, a core pipe is arranged in the concrete pile body, the core pipe penetrates through the end plates, positioning supports for fixing the core pipe are fixedly arranged on one sides of the upper end plate and the lower end plate, a grouting body is filled between the concrete pile body and the core pipe, and a plurality of rod ribs are arranged in the core pipe. The utility model discloses a can make according to actual conditions pole muscle has the free section and does not have the free section, has solved the not enough problem of traditional stock and uplift pile durability, has improved the atress mode of the body of rod, has increased the durability of compound stock, still has the construction speed fast simultaneously, bears the weight of high, engineering cost low grade advantage.
Description
Technical Field
The utility model relates to the field of anti-floating of building foundation (structure), anti-floating of underground engineering (comprehensive pipe gallery), foundation pit and slope retaining engineering, in particular to a stiff composite pile body anchor rod.
Background
In recent years, with the rapid development of urban construction and urban renovation and transformation, the foundation burial depth of a building is continuously increased, and meanwhile, the underground space is continuously expanded longitudinally, so that the anti-floating problem becomes more and more critical. The method is a common method for solving the problems of anti-floating and anti-pulling of the foundation of the underground structure. However, in the working state of the common uplift pile and the floating anchor rod, the pile body concrete or the grouting body is in a tensile state. Because the tensile strength of the concrete or the grouting body is low, when the concrete or the grouting body of the anchor rod is pulled, the concrete or the grouting body of the anchor rod cracks, the reinforcing steel bars of the pile body or the reinforcing steel bars of the anchor rod are corroded by underground water, the reinforcing steel bars are corroded gradually, and finally the stressed reinforcing steel bars are broken, so that the anti-floating component is damaged.
At present, the engineering field generally starts with solving the problems from the following aspects, on the first aspect, the stress state of an uplift pile and an anti-floating anchor rod is changed, and the stress state of the pile or the anchor rod is changed from tension to compression, so that the occurrence of cracks can be effectively reduced, and the service life of a steel bar can be prolonged; in the second aspect, the reinforcing steel bars are subjected to anticorrosion treatment or protective measures are added, so that the service life of the reinforcing steel bars can be prolonged; and in the third aspect, the reinforcing steel bar amount of the uplift pile and the anti-floating anchor rod is increased, and the crack width is controlled, but the strength of the reinforcing steel bar cannot be fully exerted by the method, so that the steel is greatly wasted.
Aiming at the problems and defects of the existing anchor rod, the development of a novel anchor rod with the advantages of full exertion of the strength of reinforcing steel bars, good durability, high construction efficiency, simple and convenient construction operation and low engineering cost is urgently needed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a stiff composite pile anchor rod, which effectively solves the problems of poor durability, low bearing capacity and high engineering cost of the anchor rod in the prior art.
In order to solve the technical problems, the utility model specifically provides the following technical scheme: the utility model provides a strength nature composite pile body anchor rod device, is in including stock body and setting the outlying cement soil of stock body, be provided with the precast concrete pile body in the cement soil both ends are fixed respectively about the precast concrete pile body and are provided with upper end plate and lower end plate, be provided with the core pipe in the precast concrete pile body, the core pipe runs through the setting and is in on the upper end plate, upper end plate and lower end plate one side all fixed be provided with right the core pipe carries out the locating support that fixes, the precast concrete pile body with it is provided with the slip casting body to fill between the core pipe, the installation is provided with a plurality of root bar muscle in the core pipe.
Furthermore, the upper end plate, the lower end plate and the positioning support are welded, and the diameter of the precast concrete pile body is set to be 300-1000 mm.
Furthermore, the positioning support comprises four mutually perpendicular first fixing rods arranged on the upper end plate and four mutually perpendicular second fixing rods arranged on the lower end plate, two ends of each first fixing rod are respectively welded on the outer side wall of the core tube and the upper end plate, and two ends of each second fixing rod are respectively welded on the outer side wall of the core tube and the lower end plate.
Furthermore, the core tube is made of a hard plastic tube or a welded tube for low-pressure fluid delivery.
Further, the bottom of the precast concrete pile body is provided with a pile bottom plug for plugging the precast concrete pile body.
Furthermore, the rod rib is made of any one of a steel strand, a common steel bar and a finish-rolled twisted steel bar.
Furthermore, the bar rib and the grouting body are bonded in full length or in part.
Further, the grouting body is cement paste or cement mortar with the water cement ratio set to be 0.5-0.7.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, the rod ribs are arranged in the core tube and can be made into a free section and a non-free section according to actual conditions, so that the problem of insufficient durability of the traditional anchor rod and uplift pile is effectively solved, the stress mode of the rod body is improved, the stressed rod ribs are protected, the durability of the composite anchor rod is increased, and the composite anchor rod has the advantages of high construction speed, high bearing capacity, low construction cost and the like.
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 should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a stiff composite pile anchor rod according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of a bolt body in an embodiment of the utility model.
The reference numerals in the drawings denote the following, respectively:
1-soil cement; 2, prefabricating a concrete pile body; 3-upper end plate; 4-a lower end plate; 5-a core tube; 6-positioning the bracket; 7-grouting; 8-a first bar rib; 9-pile bottom plugging;
61-a first fixing bar; 62-second fixing bar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the utility model provides a stiff composite pile anchor rod device, which comprises an anchor rod body and cement 1 arranged on the periphery of the anchor rod body, wherein a precast concrete pile body 2 is arranged in the cement 1, an upper end plate 3 and a lower end plate 4 are respectively and fixedly arranged at the upper end and the lower end of the precast concrete pile body 2, a core pipe 5 is arranged in the precast concrete pile body 2, the core pipe 5 penetrates through the upper end plate 3, positioning supports 6 for fixing the core pipe 5 are fixedly arranged at one sides of the upper end plate 3 and the lower end plate 4, a grouting body 7 is filled between the precast concrete pile body 2 and the core pipe 5, and a plurality of rod ribs 8 are arranged in the core pipe 5.
The main innovation point of the utility model is that cement soil 1 is constructed in advance, then the concrete pile body 2 is sunk into the precast concrete pile body 2 (the end part is sealed) in a static pressure manner, a rod bar with a guide core pipe 5 is implanted into the precast concrete pile body 2 in a mode of implanting the rod bar 8, wherein cement paste is injected into the precast concrete pile body 2, and the rod bar 8 can be made into a free section or a non-free section according to the actual condition; firstly, the stress state of an uplift pile and an anti-floating anchor rod is changed to be stressed from being pulled, so that the occurrence of cracks can be effectively reduced, and the service life of a reinforcing steel bar can be prolonged; secondly, the reinforcing steel bars are subjected to anticorrosion treatment or protective measures are added, so that the service life of the reinforcing steel bars can be prolonged; thirdly, the reinforcing steel bar amount of the uplift pile and the anti-floating anchor rod is increased, the crack width is controlled, the strength of the reinforcing steel bar cannot be fully exerted, and the steel is greatly wasted; the utility model designs a stiff composite pile body anchor rod device and a construction process to solve the problems in the prior art.
Wherein, the upper end plate 3, the lower end plate 4 and the positioning bracket 6 are welded, and the diameter of the precast concrete pile body 2 is set to be 300 mm-1000 mm.
In order to fix the core tube 5, a positioning support 6 is arranged in the precast concrete pile body 2, the positioning support 6 mainly comprises four mutually vertical first fixing rods 61 arranged on the upper end plate 3 and four mutually vertical second fixing rods 62 arranged on the lower end plate 4, the first fixing rods 61 fix the upper end of the core tube 5, so that two ends of the first fixing rods 61 are respectively welded on the outer side wall of the core tube 5 and the upper end plate 3, the second fixing rods 62 fix the lower end of the core tube 5, and two ends of the second fixing rods 62 are respectively welded on the outer side wall of the core tube 5 and the lower end plate 4; wherein the core tube 5 is made of a hard plastic tube or a welded tube for low-pressure fluid delivery.
The bar rib 8 and the grouting body 7 are bonded in full length or partially; according to the actual condition, the bar reinforcement 8 can be made into a free section and a non-free section, the full length of the bar reinforcement 8 is provided with a bonded composite anchor rod, and the concrete body of the anchor rod is pulled; for the composite anchor rod with the upper part of the rod rib 8 provided with an unbonded section, the rod rib 8 of the rod body is bounded by the presence or absence of bonding, the rod body at the lower part is pulled, and the rod body at the upper part is pressed; the grouting body 7 is cement paste or cement mortar with the water cement ratio set to be 0.5-0.7.
The construction method of the stiff composite pile body anchor rod device comprises the following steps:
the method comprises the following steps that firstly, the length and the diameter of a cement soil 1 pile and the length and the diameter of a precast concrete pile body 2 pile are reasonably configured according to calculated bearing capacity, a positioning support 6 is fixedly connected to an upper end plate 3 and a lower end plate 4 of each pile of the precast concrete pile body 2, a core pipe 5 is arranged in the positioning support 6, and the core pipe 5 is bonded or welded on the positioning support 6; adopting cement mortar or pea stone concrete to plug the bottom of the precast concrete pile body 2, and performing waterproof and anticorrosion treatment;
step two, constructing the precast concrete pile body 2 by adopting a static pressure method, and performing waterproof and anticorrosion treatment on the pile joint when a plurality of sections of precast concrete pipe piles are adopted;
and step three, after the precast concrete pile body 2 is driven, reserving the distance between the pile top and the bottom of the raft plate to be 100-150 mm, excavating soil body in the range, backfilling loose sand and other materials, and aiming at reducing the stress concentration of the pile top.
Pouring cement paste or cement mortar into the precast concrete pile body 2 and the core pipe 5;
fifthly, arranging a rod rib 8 into the core pipe 5, wherein the rod rib can be a steel bar or a steel strand;
step six, maintenance and quality inspection: and after the slurry strength is formed, carrying out bearing capacity inspection on the rigid composite pile body anchor rod.
The main core of the utility model is that the utility model is to construct cement 1 in advance, then sink into the precast concrete pile body 2 (end seal) by static pressure, through implanting the post-bar 8, the bar with the guide core tube 5 is rotated and fixedly implanted into the precast concrete pile body 2, wherein cement paste is injected into the precast concrete pile body 2, the bar can be made into a free section and a non-free section according to the actual situation, the lower part concrete is pulled, the upper part concrete is pressed, the problem that the durability of the traditional anchor rod and the uplift pile is not enough is effectively solved, the stress mode of the rod body is improved, the stress bar is protected, the durability of the composite anchor rod is increased, and the composite anchor rod has the advantages of high construction speed, high bearing capacity, low construction cost and the like.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.
Claims (7)
1. The utility model provides a strength nature composite pile body stock, includes the stock body, its characterized in that still is including setting up stock body outlying cement soil (1), be provided with precast concrete pile body (2) in cement soil (1) both ends are fixed respectively about precast concrete pile body (2) and are provided with upper end plate (3) and lower end plate (4), be provided with core pipe (5) in precast concrete pile body (2), core pipe (5) run through the setting and are in on upper end plate (3), it is right that upper end plate (3) and lower end plate (4) one side are all fixed be provided with core pipe (5) carry out fixed locating support (6), precast concrete pile body (2) with it is provided with slip casting body (7) to fill between core pipe (5), the installation is provided with a plurality of root pole muscle (8) in core pipe (5).
2. The stiffness composite pile anchor rod of claim 1, wherein the upper end plate (3), the lower end plate (4) and the positioning bracket (6) are welded, and the diameter of the precast concrete pile body (2) is set to be 300 mm-1000 mm.
3. The stiff composite pile anchor rod of claim 2, wherein the positioning bracket (6) comprises four mutually perpendicular first fixing rods (61) arranged on the upper end plate (3) and four mutually perpendicular second fixing rods (62) arranged on the lower end plate (4), the two ends of the first fixing rods (61) are respectively welded on the outer side wall of the core tube (5) and the upper end plate (3), and the two ends of the second fixing rods (62) are respectively welded on the outer side wall of the core tube (5) and the lower end plate (4).
4. A stiff composite pile anchor rod according to claim 3, characterized in that the core tube (5) is made of hard plastic tube or welded tube for low pressure fluid transportation.
5. A stiff composite pile anchor rod according to claim 1, characterized in that the bottom of the precast concrete pile body (2) is provided with a pile bottom block (9) for blocking the precast concrete pile body.
6. A stiff composite pile anchor rod according to claim 5, characterized in that the material of the rod reinforcement (8) is any one of steel strand, ordinary steel bar, and finish-rolled twisted steel bar.
7. A stiff composite pile anchor rod according to claim 1, characterized in that the reinforcement (8) and the grout (7) are bonded together in full length or in part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120353434.5U CN215801598U (en) | 2021-02-08 | 2021-02-08 | Stiff composite pile body anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120353434.5U CN215801598U (en) | 2021-02-08 | 2021-02-08 | Stiff composite pile body anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215801598U true CN215801598U (en) | 2022-02-11 |
Family
ID=80161344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120353434.5U Active CN215801598U (en) | 2021-02-08 | 2021-02-08 | Stiff composite pile body anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215801598U (en) |
-
2021
- 2021-02-08 CN CN202120353434.5U patent/CN215801598U/en active Active
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