CN220059624U - Prefabricated high-strength core body, core body section and tension type anchor rod for tension type anchor rod - Google Patents
Prefabricated high-strength core body, core body section and tension type anchor rod for tension type anchor rod Download PDFInfo
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- CN220059624U CN220059624U CN202320722361.1U CN202320722361U CN220059624U CN 220059624 U CN220059624 U CN 220059624U CN 202320722361 U CN202320722361 U CN 202320722361U CN 220059624 U CN220059624 U CN 220059624U
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- 238000004873 anchoring Methods 0.000 claims abstract description 45
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- 229920003023 plastic Polymers 0.000 claims description 16
- 239000004033 plastic Substances 0.000 claims description 16
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001903 high density polyethylene Polymers 0.000 claims description 8
- 239000004700 high-density polyethylene Substances 0.000 claims description 8
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a prefabricated high-strength core body for a tension type anchor rod, a core body section and the tension type anchor rod, which comprises a core body and a uniform pressure sleeve for enabling a full-length bonding type or tension type anchor rod anchoring section and a rock-soil body connecting interface around the anchoring section to generate uniform bonding friction, wherein the uniform pressure sleeve is sleeved outside the core body, the core body is a cylinder prefabricated by a composite high-strength material, and an anchor rod rib body is arranged inside the core body; the upper end of the anchor rod rib body is provided with a connecting sleeve, and the upper end surface of the connecting sleeve is leveled with the upper end surface of the core body; the lower end of the anchor rod rib downwards penetrates out of the core body to form a connecting section, and the connecting section is matched with the connecting sleeve. The utility model effectively solves the problem of stress concentration of the top and surrounding rock-soil body of the anchoring section of the tension type anchor rod, improves the anchoring efficiency, and solves the problem of insufficient durability or difficult perfusion quality assurance.
Description
Technical Field
The utility model relates to the field of anti-floating anchors, in particular to a prefabricated high-strength core section for a tension type anchor, a prefabricated high-strength core and a tension type anchor.
Background
With the increasing shortage of urban land, underground space development and utilization are more and more extensive, and the anti-floating problem of underground construction and structures in high-water-level areas of underground water is more and more prominent, and anti-floating measures are generally needed. The anti-floating anchor rod is used for balancing the floating force of the groundwater to the building, so that the anti-floating method for the building is effective.
In the current related regulations and specifications, the high requirements on the durability-corrosion resistance of the anti-floating anchor rod are provided, compared with the conventional tension type anchor rod and full-length bonding type anti-floating anchor rod which are applied more, the prefabricated core tension type anchor rod and full-length bonding type anti-floating anchor rod are wrapped in the high-strength core body prefabricated in a factory due to the reinforcement body, so that the defect that grouting bodies near the anchor bar of the anchor rod body anchoring section cannot meet the requirements on the transmission and durability of the tension bearing capacity due to the fact that mud is clamped, sand is clamped or poured untight and not full in the traditional anchor rod grouting construction is avoided, and therefore the force transmission mechanism, the anti-pulling bearing capacity, the corrosion resistance effect and the durability of the anti-floating anchor rod are ensured more easily. In addition, the stress mechanism between the common tension type anchor rod and the full-length bonding type anti-floating anchor rod is easy to cause the phenomenon of concentration of the axial force of the anchor body and the side friction force stress of the interface between the anchor body and the surrounding rock-soil body due to the stress mechanism between the anchor body and the grouting body, and the anchor rod side friction force is unevenly distributed along the length of the anchor section, so that the anchor efficiency of the anchor section is low and the like. The tensile anchor rod and the full-length bonding anchor rod adopting the uniformly-pressed sleeve to pre-prepare the core body can improve the stress mechanism between the anchor rod rib body, the grouting body and the surrounding rock-soil body through the action of the uniformly-pressed sleeve, reduce the phenomenon of stress concentration of the axial force of the anchor rod rib body and the side friction resistance of the interface between the anchor body and the surrounding rock-soil body, reduce the defect that the side friction resistance of the anchor rod anchoring section is unevenly distributed along the length of the anchoring section, and further improve the anchoring efficiency of the anchoring section.
At present, although a related patent exists on a prefabricated core pressure type anchor rod, the type of the anchor rod used for the prefabricated core full-length bonding type anchor rod and the tension type anchor rod is full-length bonding type anchor rod, the structure and the stress characteristics of the anchor rod are completely different from those of the pressure type anchor rod, the rib body of the pressure type anchor rod is unbonded, the first tensile bearing part is the anchor rod bottom end, the full-length bonding type anchor rod rib body and the tension type anchor rod rib body are bonded, and the first tensile bearing part is the anchor rod top end. At present, the free section and the anchoring section of the common full-length bonding type and tension type anchor rod are filled in the field, although the method of arranging a corrugated pipe outside the anchor bar for anchor bar corrosion prevention is also adopted, the corrugated pipe is a common corrugated pipe, only has a uniform pressure effect when the corrosion prevention effect is different, and in most cases, the grouting body filled in the small-aperture hole in the field is not tightly combined with the structure of the anchor rod body, so that the grouting body of the anchoring section has the conditions of holes, non-compactness and the like, and the bearing capacity and durability of the anchor rod are greatly influenced. Therefore, the common full-length bonding type and tension type anchor rod adopting the prefabricated core body as the anchoring section has better bearing capacity and durability guarantee on the premise of ensuring the quality of the anchor rod.
Disclosure of Invention
The utility model provides the prefabricated high-strength core tension type anchor rod, the full-length bonding type anchor rod and the construction method thereof, which are capable of improving the anchor rod anchoring efficiency, durability and reliability.
In order to achieve the purpose, the prefabricated high-strength core body section for the tension type anchor rod comprises a core body and a uniform-pressure sleeve for enabling the joint interface between the full-length bonding type or tension type anchor rod anchoring section and a rock-soil body around the anchoring section to generate uniform viscous friction, wherein the uniform-pressure sleeve is sleeved outside the core body, the core body is a prefabricated cylinder made of a composite high-strength material, and anchor rod ribs are arranged inside the core body;
the upper end of the anchor rod rib body is provided with a connecting sleeve, and the upper end surface of the connecting sleeve is leveled with the upper end surface of the core body;
the lower end of the anchor rod rib downwards penetrates out of the core body to form a connecting section, and the connecting section is matched with the connecting sleeve.
Further, the diameter of the core body is not smaller than 5cm and is matched with the tensile bearing capacity of the anchor rod and the diameter of the anchor rod anchoring section, and the length of the core body is at least 1m; the compressive strength of the core is greater than M30.
Further, the even-pressure sleeve is of a cylindrical, bamboo-joint-shaped cylindrical or conical cylindrical structure made of high-density polyethylene plastic or polypropylene plastic, and the thickness of the even-pressure sleeve is more than 1mm.
Further, the uniform-pressure sleeve is a uniform-pressure sleeve with variable diameter, variable corrugated spacing and/or variable corrugated height, and the uniform-pressure sleeve is made of high-density polyethylene plastic or polypropylene plastic.
Further, the even-pressure sleeve is provided with waves, and the height of the waves of the even-pressure sleeve, which is close to the upper end of the core body, is smaller than that of the waves of the even-pressure sleeve, which is close to the lower end of the core body; and/or the ripple distance of the even-pressure sleeve close to the upper end of the core body is smaller than that of the even-pressure sleeve close to the lower end of the core body.
In order to achieve the purpose, the prefabricated high-strength core body for the tension type anchor rod comprises a core body and a uniform-pressure sleeve for enabling the interface between the full-length bonding type or tension type anchor rod anchoring section and the rock-soil body around the anchoring section to generate uniform viscous friction, wherein the uniform-pressure sleeve is sleeved outside the core body, the core body is a cylinder prefabricated by a composite high-strength material, and anchor rod ribs are arranged inside the core body;
the upper end of the anchor rod rib extends upwards or is provided with a connecting sleeve, and the upper end face of the connecting sleeve is leveled with the upper end face of the core body;
the lower end of the anchor rod rib downwards penetrates out of the core body to form a connecting section, and the connecting section is matched with the connecting sleeve.
In order to achieve the purpose, the tension type anchor rod comprises a grouting body, wherein at least one section of prefabricated high-strength core body section for the tension type anchor rod is arranged in the middle of the lower part of the grouting body.
In order to achieve the purpose, the full-length bonding type or tension type anchor rod comprises a grouting body, wherein at least one section of prefabricated high-strength core body section for the tension type anchor rod is arranged in the middle of the grouting body.
In order to achieve the above purpose, the utility model provides a construction method of a tension type anchor rod and a full length bonding type anchor rod, which comprises the following steps:
preparing a prefabricated high-strength core body containing the tendons in a factory according to the sizes and specifications of the tendons of the anchor rods, and transporting the prefabricated high-strength core body and the tendons to a construction site;
the free section rib body of the anchor rod or the anchoring rib body in the anchored foundation is tightly connected with the anchor rod rib body which is embedded in the high-strength core body in advance in a sleeve connection mode or other reliable modes, and the bottom end of the high-strength core body is fixedly connected with a guide cap arranged at the bottom of the anchor rod body;
uniformly arranging a vertical ring along the vertical direction of the rib body and binding a grouting pipe or reserving grouting pipe holes in the core body and penetrating the grouting pipe holes to bind the grouting pipe;
drilling anchor rod holes at designated positions;
placing one end of the rib body of the anchor rod, which is provided with the high-strength core body guide cap, into an anchor rod hole as a starting end;
grouting the anchor rod hole by adopting a hole bottom grouting mode until the hole opening overflows grouting liquid, and stopping grouting; or, adopting a slurry-following pore-forming mode, including rotary spraying, spiral drilling, impact and cement slurry injection during pore-forming by stirring, and performing secondary slurry supplementing by using a slurry injection pipe after the rod body is inserted;
after grouting is completed, the upper part of the rib body is fixedly penetrated into the anchoring foundation, and the upper end of the rib body penetrates into the anchoring foundation to be fixedly connected with the anchor head.
The prefabricated core tension type anchor rod and the full-length bonding type anchor rod are wrapped in the prefabricated core body in a factory, so that the defect that grouting bodies near anchor bars of an anchor rod body anchoring section cannot meet the requirements of tensile bearing capacity transmission and durability due to mud clamping, sand clamping or uncompacted and plump grouting in the traditional anchor rod grouting construction possibly caused by slight carelessness is avoided, and therefore the force transmission mechanism, the anti-corrosion effect and the durability of the prefabricated core tension type anchor rod are more easily ensured. In addition, the stress mechanism between the common tension type anchor rod and the full-length bonding type anti-floating anchor rod is easy to cause the phenomenon of concentration of the axial force of the anchor body and the side friction force stress of the interface between the anchor body and the surrounding rock-soil body due to the stress mechanism between the anchor body and the grouting body, and the anchor rod side friction force is unevenly distributed along the length of the anchor section, so that the anchor efficiency of the anchor section is low and the like. The tensile anchor rod and the full-length bonding anchor rod adopting the uniformly-pressed sleeve to pre-prepare the core body can improve the stress mechanism between the anchor rod rib body, the grouting body and the surrounding rock-soil body through the action of the uniformly-pressed sleeve, reduce the phenomenon of stress concentration of the axial force of the anchor rod rib body and the side friction resistance of the interface between the anchor body and the surrounding rock-soil body, reduce the defect that the side friction resistance of the anchor rod anchoring section is unevenly distributed along the length of the anchoring section, and further improve the anchoring efficiency of the anchoring section.
Drawings
FIG. 1 is a cross-sectional view showing the overall structure of a prefabricated high strength core segment for a tension type anchor or full length binding type anchor rod according to example 1 of the present utility model;
FIG. 2 is a cross-sectional view showing the overall structure of a prefabricated high-strength core for a segmented tension type anchor or a full length bonded type anchor according to embodiment 2 of the present utility model;
FIG. 3 is a cross-sectional view of the overall structure of another embodiment of a prefabricated high strength core for a tension type anchor or full length bonded anchor;
fig. 4 is a cross-sectional view of the overall structure of the full length binding type anchor of the present utility model.
Fig. 5 is a cross-sectional view of the overall structure of the tension type anchor of the present utility model.
Reference numerals:
1 pre-manufacturing a high-strength core body, 2 grouting bodies, 3 anchor rod holes, 4 guide caps, 5 centering frames, 6 tendons, 7 grouting pipes, 8 anchor plates and nuts, 9 sleeves, 10 corrugated pipes, 11 connecting sleeves, 12 core body grouting bodies and 13 anchoring foundations
Detailed Description
The utility model is further described below with reference to the drawings.
Example 1
As shown in fig. 1, the prefabricated high-strength core section 1 for a tension type anchor rod or a full-length bonding type anchor rod of the embodiment comprises a core 12 and a uniform pressure sleeve 10 for enabling the interface between the tension type anchor rod and the full-length bonding type anchor rod and the surrounding rock-soil body to generate uniform viscous friction resistance, wherein the core 12 is a prefabricated cylinder made of composite high-strength materials, and the anchor rod rib 6 is wrapped in the axial direction of the core 12 or uniformly provided with a plurality of ribs along the section of the core; the diameter of the core 12 is more than 5cm, and the length of the core 12 is at least 1m; the compressive strength of the core 12 is greater than M40, the uniform pressure sleeve 10 is in a cylindrical, bamboo-shaped cylindrical or conical cylindrical structure made of high-density polyethylene plastic or polypropylene plastic, the uniform pressure sleeve 10 is sleeved outside the core 12, and the diameter of the uniform pressure sleeve 22 is greater than 1mm;
the compressive strength of the composite high-strength material at least meets the requirement of 1-3 days of pouring and can reach more than 30-60Mpa, and the composite high-strength material is optimally a cement-based composite high-strength material;
in this embodiment, the rib 6 is wrapped in the high-strength core 1, the high-strength core 1 is sleeved with the uniform-pressure sleeve 10, the problem that the quality of grouting is difficult to ensure in the field of a common tension type anchor rod and full-length bonding type anchor rod engineering is solved, the durability of the anchor rod is ensured, meanwhile, the problem that the stress concentration of the viscous friction resistance of the connection interface between the anchor rod anchor body and surrounding soil is realized in the top area of the anchor rod anchor body is improved, and the anchoring efficiency is improved.
Example 2
As shown in fig. 1, a prefabricated high-strength core 1 for a pull-type anchor rod or a full-length bonding-type anchor rod according to this embodiment is composed of two prefabricated high-strength core segments 1 according to embodiment 1, each prefabricated high-strength core segment 1 includes a uniform pressure sleeve 10, an anchor rod rib 6 is disposed in the uniform pressure sleeve 10, and a composite high-strength material is poured between the anchor rod rib 6 and the uniform pressure sleeve 10.
Further, the pressure equalizing sleeve 10 is a high-strength corrugated pipe with variable diameter, variable corrugated interval and/or variable corrugated height; for example: the height of the ripple of the even-pressure sleeve close to the upper end of the core body is smaller than that of the ripple of the even-pressure sleeve close to the lower end of the core body; and/or the ripple distance of the even-pressure sleeve close to the upper end of the core body is smaller than the ripple distance of the even-pressure sleeve close to the lower end of the core body.
The even-pressure sleeve 10 is made of high-density polyethylene plastic or polypropylene plastic, and the thickness of the even-pressure sleeve 10 is more than 1mm.
The compressive strength of the composite high-strength material at least meets the requirement of 1-3 days of pouring and can reach more than 30-60Mpa, and the composite high-strength material is optimally a cement-based composite high-strength material;
according to the embodiment, the stress concentration phenomenon is adjusted along the axial direction by changing the corrugated height and the corrugated distance of the uniform pressure sleeve, so that the bonding strength of the uniform pressure sleeve and the grouting body is increased, the uniformly-viscous friction resistance of the anchored soil body mobilized by the anchor rod anchoring section is generated, the anchoring efficiency is improved, and the anchor rod length is saved.
Example 3
As shown in fig. 2, the prefabricated high-strength core 1 for a pull-type anchor rod and a full-length bonding-type anchor rod according to this embodiment includes a uniform-pressure sleeve 10, the anchor rod rib 6 is disposed in the uniform-pressure sleeve 10, a composite high-strength material is poured between the anchor rod rib 6 and the uniform-pressure sleeve 10, the anchor rod rib 6 is disposed at the top of the prefabricated high-strength core 1, a rib steel sleeve connector 11 (such as a common screw thread reinforcing bar or a prestressed screw thread reinforcing bar is adopted by the rib 6), the uniform-pressure sleeve 10 is a high-strength corrugated pipe with variable diameters, variable corrugated intervals and/or variable corrugated heights, the uniform-pressure sleeve 10 is made of high-density polyethylene plastic or polypropylene plastic, and the thickness of the uniform-pressure sleeve 10 is >1mm.
The compressive strength of the composite high-strength material at least meets the requirement of 1-3 days of pouring and can reach more than 30-60Mpa, and the composite high-strength material is optimally a cement-based composite high-strength material;
according to the embodiment, the rib steel sleeve connector is arranged at the top of the prefabricated high-strength core body so as to realize reliable connection when the prefabricated high-strength core body is segmented, and the rib of the anchor rod at the bottom of the prefabricated high-strength core body of the upper segment is screwed into the rib connecting steel sleeve at the top of the lower segment during connection, so that the connection interface of the upper segment and the lower segment is ensured to be compressed. The connection mode of the anchor rod rib body is simple and easy to implement, and the on-site connection can be reliably and easily implemented when the prefabricated high-strength core body is arranged in a segmented mode.
Example 4
As shown in fig. 3, the tension type anchor rod and the full length bonding type anchor rod of the present embodiment comprise at least one tendon 6 and a prefabricated high-strength core 1; the prefabricated high-strength core 1 comprises a core 12 and a uniform pressure sleeve 10 with the inner diameter matched with the diameter of the core 12, the core 12 is a composite high-strength material prefabricated cylinder, and the anchor rod rib 6 is positioned in the axial direction of the core 12 or uniformly provided with a plurality of ribs along the section of the core; the diameter of the core 12 is not less than 50mm, and the length of the core 12 is not less than 1m; the compressive strength of the core 12 is greater than M30, the uniform pressure sleeve 10 is in a cylindrical, bamboo-shaped cylindrical or conical cylindrical structure made of high-density polyethylene plastic or polypropylene plastic, the uniform pressure sleeve 10 is sleeved on the outer side of the core 12, and the thickness of the uniform pressure sleeve 10 is more than 1mm;
the compressive strength of the composite high-strength material at least meets the requirement of 1-3 days of pouring and can reach more than 30-60Mpa, and the composite high-strength material is optimally a cement-based composite high-strength material;
the lower part of the rib body 6 is arranged in the prefabricated high-strength core body 1 in a penetrating mode.
The high-strength concrete casting device further comprises a grouting body 2, wherein the grouting body 2 wraps the rib body 6 and the prefabricated high-strength core body 1 inside, and the grouting body 2 is made of a composite high-strength material;
the composite high-strength material at least meets the requirement of pouring for 1-3 days, and the compressive strength can reach more than 30-60 Mpa; the composite high-strength material is optimally cement-based composite high-strength material;
the rib body 6 is a prestressed twisted steel, a common twisted steel, a composite fiber rib or a prestressed steel strand, the rib body can adopt an external epoxy coating anti-corrosion measure, a smooth sleeve is sleeved on the free section part of the tension type anchor rod at the outer side of the rib body 6, and/or a weak bonding anti-corrosion coating is coated on the outer side of the rib body 1.
The tension type anchor rod and the full-length bonding type anchor rod are provided with the high-strength core body, so that the problem that the quality of grouting in the field of common tension type anchor rod and full-length bonding type anchor rod engineering is difficult to ensure is solved, the durability of the anchor rod is ensured, the problem that the viscous friction resistance of the connecting interface of the anchor rod anchor body and surrounding rock-soil body is concentrated in the top area of the anchor rod anchor section is solved, and the anchoring efficiency is improved.
Example 5
Based on embodiment 4, the embodiment further comprises an anchor head 8 and an anchor foundation 13, wherein the lower end of the rib body 6 is connected with the top steel sleeve of the prefabricated core body in a screwed mode, the upper end of the rib body 6 is fixedly arranged in the anchor foundation 13 in a penetrating mode, and the upper end of the rib body 6 penetrates through the anchor foundation 13 to be fixedly connected with the anchor head 8;
as shown in fig. 1 or 2, the uniform pressure sleeve is provided with corrugations, the height of the corrugations of the uniform pressure sleeve 10 near the top end of the high-strength core 1 is lower than the height of the corrugations of the uniform pressure sleeve 10 far away from the bottom end of the high-strength core 1, and the distance of the corrugations of the uniform pressure sleeve 10 near the top end of the high-strength core 1 is greater than the distance of the corrugations of the uniform pressure sleeve 10 far away from the bottom end of the high-strength core 1.
According to the embodiment, the bonding strength and uniformity of the uniform-pressure sleeve 10 and the anchor rod hole grouting body 2 are improved through changing the geometric dimension of the corrugation of the uniform-pressure sleeve 10, so that the anchored soil body mobilized by the anchor rod anchoring section generates uniform viscous friction resistance, the anchoring efficiency is improved, and the anchor rod length is saved.
Example 6
The embodiment relates to a construction procedure for prefabricating a high-strength core uniform pressure type tension type anchor rod and a full-length bonding anchor rod, wherein the procedure comprises the following steps of:
preparing a prefabricated high-strength core 1 in a factory according to the size of the tendon of the anchor rod, and transporting the prefabricated high-strength core 1 to a construction site;
screwing, compacting and fixedly connecting the anchor rod rib body and a steel sleeve reserved at the top end of the high-strength core body containing the anchor rod rib body, and installing a guide cap 4;
uniformly arranging a centering frame 5 along the vertical direction of the high-strength core body, binding grouting pipes or reserving grouting pipe holes in the high-strength core body and penetrating through the binding grouting pipes 7;
drilling an anchor rod hole 3 at a designated position;
placing one end of the rib body of the anchor rod, which is provided with the high-strength core body guide cap, into an anchor rod hole as a starting end;
grouting the anchor rod hole by adopting a hole bottom grouting mode until the hole opening overflows grouting liquid, and stopping grouting; or, adopting a slurry-following pore-forming mode, including rotary spraying, spiral drilling, impact and cement slurry injection during pore-forming by stirring, and performing secondary slurry supplementing by using a slurry injection pipe after the rod body is inserted;
and forming a grouting body 2 after grouting is completed, fixedly penetrating the upper part of the rib body into the anchoring foundation, and penetrating the upper end of the rib body into the anchoring foundation to be fixedly connected with the anchor head.
The anchor rod rib body and the core embody field assembly, the rib body is easy and convenient to process, the rib body is placed down more smoothly and smoothly, grouting of the anchor rod hole is achieved according to the conventional requirement, repeated or even pressurized grouting is not needed, and compared with the construction of a common tension type anchor rod and a full-length bonding type anchor rod, the grouting amount and the construction time are greatly saved; the problems that the quality assurance of grouting on site of a common tension type anchor rod and a full-length bonding type anchor rod engineering is difficult are solved, the durability and the reliability of the anchor rod are ensured, meanwhile, the problem that the stress concentration of the viscous friction resistance of the connection interface of the anchor rod anchoring body and surrounding rock-soil bodies is high in the top area of the anchor rod anchoring section is solved, and the anchoring efficiency is improved.
The present utility model is not limited to the above embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.
Claims (8)
1. The utility model provides a prefabricated high strength core body section for pulling force formula stock which characterized in that: the high-strength composite high-strength anchoring section comprises a core body and a uniform pressure sleeve for generating uniform viscous friction resistance at the joint interface between the full-length cohesive type or tensile type anchoring section and a rock-soil body around the anchoring section, wherein the uniform pressure sleeve is sleeved outside the core body, the core body is a cylinder prefabricated by composite high-strength materials, and an anchor rod rib body is arranged inside the core body;
the upper end of the anchor rod rib body is provided with a connecting sleeve, and the upper end surface of the connecting sleeve is leveled with the upper end surface of the core body;
the lower end of the anchor rod rib downwards penetrates out of the core body to form a connecting section, and the connecting section is matched with the connecting sleeve.
2. A prefabricated high strength core segment for a tension type anchor as claimed in claim 1, wherein: the diameter of the core body is not less than 5cm and is matched with the tensile bearing capacity of the anchor rod and the diameter of the anchor rod anchoring section, and the length of the core body is at least 1m; the compressive strength of the core is greater than M30.
3. A prefabricated high strength core segment for a tension type anchor as claimed in claim 1, wherein: the even pressure sleeve is of a cylindrical, bamboo-joint-shaped cylindrical or conical cylindrical structure made of high-density polyethylene plastic or polypropylene plastic, and the thickness of the even pressure sleeve is more than 1mm.
4. A prefabricated high strength core segment for a tension type anchor as claimed in claim 1, wherein: the uniform-pressure sleeve is a uniform-pressure sleeve with variable diameter, variable corrugated space and/or variable corrugated height, and is made of high-density polyethylene plastic or polypropylene plastic.
5. A prefabricated high strength core segment for a tension type anchor as claimed in claim 1, wherein: the uniform pressure sleeve is provided with waves, and the height of the waves of the uniform pressure sleeve, which is close to the upper end of the core body, is smaller than that of the waves of the uniform pressure sleeve, which is close to the lower end of the core body; and/or the ripple distance of the even-pressure sleeve close to the upper end of the core body is smaller than that of the even-pressure sleeve close to the lower end of the core body.
6. The utility model provides a prefabricated high strength core for pulling force formula stock which characterized in that: the high-strength composite high-strength anchoring section comprises a core body and a uniform pressure sleeve for generating uniform viscous friction resistance at the joint interface between the full-length cohesive type or tensile type anchoring section and a rock-soil body around the anchoring section, wherein the uniform pressure sleeve is sleeved outside the core body, the core body is a cylinder prefabricated by composite high-strength materials, and an anchor rod rib body is arranged inside the core body;
the upper end of the anchor rod rib extends upwards or is provided with a connecting sleeve, and the upper end face of the connecting sleeve is leveled with the upper end face of the core body;
the lower end of the anchor rod rib downwards penetrates out of the core body to form a connecting section, and the connecting section is matched with the connecting sleeve.
7. The utility model provides a pulling force formula stock which characterized in that: comprising a grouting body, wherein at least one section of prefabricated high-strength core body section for the tension type anchor rod as claimed in claim 1 is arranged in the middle of the lower part of the grouting body.
8. The utility model provides a pulling force type stock, pulling force type stock be full length bonding formula pulling force stock, its characterized in that: comprising a grouting body, wherein at least more than one section of prefabricated high-strength core body section for the tension type anchor rod as claimed in claim 1 is arranged in the middle of the grouting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320722361.1U CN220059624U (en) | 2023-04-04 | 2023-04-04 | Prefabricated high-strength core body, core body section and tension type anchor rod for tension type anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320722361.1U CN220059624U (en) | 2023-04-04 | 2023-04-04 | Prefabricated high-strength core body, core body section and tension type anchor rod for tension type anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220059624U true CN220059624U (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320722361.1U Active CN220059624U (en) | 2023-04-04 | 2023-04-04 | Prefabricated high-strength core body, core body section and tension type anchor rod for tension type anchor rod |
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| Country | Link |
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| CN (1) | CN220059624U (en) |
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2023
- 2023-04-04 CN CN202320722361.1U patent/CN220059624U/en active Active
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