CN215715259U - Pressure type unbonded prestressed anti-floating anchor rod water-stop steel plate seepage-proofing structure - Google Patents
Pressure type unbonded prestressed anti-floating anchor rod water-stop steel plate seepage-proofing structure Download PDFInfo
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- CN215715259U CN215715259U CN202121882786.6U CN202121882786U CN215715259U CN 215715259 U CN215715259 U CN 215715259U CN 202121882786 U CN202121882786 U CN 202121882786U CN 215715259 U CN215715259 U CN 215715259U
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Abstract
The utility model discloses a water stop steel plate anti-seepage structure of a pressure type unbonded prestressed anti-floating anchor rod, which comprises a water stop steel plate, a plurality of pressure sleeves, a sealing ring and a locking nut; the water stop steel plate comprises a plate body and a plurality of sealing holes; a plurality of sealing holes are uniformly and annularly arranged around the center of the plate body, and a plurality of unbonded steel stranded wires of the pressure type unbonded prestressed anti-floating anchor rod penetrate through the plurality of sealing holes; the plurality of pressing sleeve pipes are sleeved on the plurality of unbonded steel stranded wires, one end of each pressing sleeve pipe comprises an external thread, and the external thread penetrates through the sealing hole; the sealing ring is sleeved at the root part of the external thread at one end of each pressing sleeve and is positioned at one side of the sealing hole; the locking nut is screwed on the part of the external thread of the pressure sleeve exposed out of the other side of the sealing hole; wherein the sealing hole, the pressing sleeve, the sealing ring and the locking nut form a water stop steel plate anti-seepage structure. Therefore, the water stop steel plate can separate and prevent the basic water from permeating through the gaps on the outer wall of the unbonded steel strand and the gaps inside the stranded steel strand in the wire diameter.
Description
Technical Field
The utility model relates to the field of pressure type prestressed anti-floating anchor rods, in particular to a water-stopping steel plate anti-seepage structure of a pressure type unbonded prestressed anti-floating anchor rod.
Background
With the fact that the world economy of the twenty-first century enters a high-speed development stage, particularly the development speed of the Chinese economy is more global leading, the national foundation construction is also improved in mechanism and technological innovation, the country draws the coming of the era of promoting the development of infrastructure, and the pressure type prestressed anti-floating anchor rod has established the important position in the field of building foundation engineering from the aspects of research, development, production, application and the like. The traditional anti-floating anchor rod is composed of a pressure type and a tension type, a base material adopts common deformed steel bar or finish-rolled deformed steel bar, and a steel strand is also adopted. Because the use standard of the prior anti-floating anchor rod is low, the corresponding defects are gradually exposed, such as: the shear fracture, dislocation, cracking, leakage and other safety accidents of the bearing beam of the building foundation caused by low anchoring pull-out resistance, poor anti-interference stability, weak anti-corrosion and anti-permeability performance and the like. Based on the technical requirements, the China departs from JGJ476-2019 'construction engineering anti-floating technical standard', wherein the design of the anchor rod provides corresponding requirements, and the technical requirements are made on the anti-pulling anchoring force, the length, the corrosion resistance and the impermeability of the anchoring anti-pulling force of different types of anti-floating anchor rods in different stratums.
Based on the huge demand of anti-floating anchor rod in the market, simultaneously belongs to the prestressing force technical category again, its main research and development content and key technology direction are as follows:
1. the anchoring withdrawal resistance and the anti-interference stability of the prestressed anchor rod anchoring body are improved: the anchor rod is characterized in that the most common and stable anchoring mode in the prestressed anchoring technology is adopted in the main structure design of the anchor rod, namely an extrusion sleeve is matched with an extrusion spring to be in a high-pressure extrusion occlusion mode, a rod body base material adopts UPS-15.2-1860-JG/T161-2016 unbonded steel stranded wires, and the anchoring performance of anchoring in an extrusion mode under the condition of not considering the concrete strength of a pile body meets the requirement of being more than or equal to 95% in GB/T14370-2015 and is far more than 2 times of the strength required by the anchor rod design. The non-adhesive steel strand is adopted, and under a stress structure, the anchoring anti-pulling force is large, the anti-interference stability is good, and meanwhile, the anti-corrosion problem of the bus is solved.
2. The problem of underground foundation water leakage through the anchor rod structure body or the crack of the joint of the concrete and the structure body is solved: the term 7.5.10 in the JGJ476-2019 standard has different requirements on the waterproof grade of the connecting part of the anchor rod and the underground basic structure, and three parts for forming leakage in the anchor rod structure:
1) the bearing end is the most important leakage point, because the outer protective layer (plastic sheath) of the steel strand needs to be removed at the extrusion meshing part of the extrusion sleeve and the steel strand, an exposed leakage point is formed at the end part, and underground water can seep from the end part steel strand twisting seam and the outer surface of the steel strand.
2) The second leak point is the junction of stock upper portion and building foundation position raft board or bottom plate, in the structural pattern promptly "stagnant water steel sheet position", the leak point of here mainly produces in the department that does not have bonding steel strand wires and pile body concrete, the mode of seepage is: the underground foundation water upwelles along the crack between the unbonded steel strand plastic outer sleeve and the concrete through corresponding water pressure.
3) The third seepage position is on the top of the anchor rod: the anchoring position of anchor backing plate and ground tackle steel strand wires, the anchoring junction is similar with bearing the weight of the end, the outer plastic layer of unbonded steel strand wires need to get rid of the top layer sheath because of the anchoring needs equally, consequently the leak source appears in this connecting portion.
In order to meet the requirement of the bolt anti-corrosion design in item 7.5.9 in the JGJ476-2019 standard, a design scheme of comprehensively considering leakage and corrosion resistance compatibility becomes a technical key when the bolt is initially designed and planned.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a water-stop steel plate seepage-proofing structure of a pressure type unbonded prestressed anti-floating anchor rod, which can well obstruct and prevent base water from permeating through gaps on the outer wall of unbonded steel strands and gaps inside the steel strands in a wire diameter twisting mode.
In order to achieve the purpose, the utility model provides a water stop steel plate seepage prevention structure of a pressure type unbonded prestressed anti-floating anchor rod, which is arranged in a water stop steel plate component close to a fixed end anchorage device component of the pressure type unbonded prestressed anti-floating anchor rod, wherein the water stop steel plate component comprises a water stop steel plate, a plurality of pressure sleeves, a sealing ring and a locking nut; the water stop steel plate comprises a plate body and a plurality of sealing holes; a plurality of sealing holes are uniformly and annularly arranged around the center of the plate body, and a plurality of unbonded steel stranded wires of the pressure type unbonded prestressed anti-floating anchor rod penetrate through the plurality of sealing holes; the plurality of pressing sleeve pipes are sleeved on the plurality of unbonded steel stranded wires, one end of each pressing sleeve pipe comprises an external thread, and the external thread penetrates through the sealing hole; the sealing ring is sleeved at the root part of the external thread at one end of each pressing sleeve and is positioned at one side of the sealing hole; the locking nut is screwed on the part of the external thread of the pressure sleeve exposed out of the other side of the sealing hole; wherein the sealing hole, the pressing sleeve, the sealing ring and the locking nut form a water stop steel plate anti-seepage structure.
In a preferred embodiment, each press sleeve further comprises a sealing step provided at the root of the external thread of the press sleeve.
In a preferred embodiment, the sealing ring comprises a sealing tongue which is annularly arranged at the edge of an inner hole of the sealing ring and protrudes along the axis direction, and after the sealing ring is extruded by the sealing step of the pressing sleeve and the plate body of the water stop steel plate, the sealing tongue extends deeply into and fills a gap between the sealing hole and the unbonded steel stranded wire.
In a preferred embodiment, the pressure type unbonded prestressed anti-floating anchor rod water-stop steel plate seepage-proofing structure further comprises a water-stop ring which is coated outside the sealing ring.
In a preferred embodiment, the water stop ring is made of a water-swellable material.
In a preferred embodiment, the water stop steel plate further comprises a plurality of elbow reinforcing bars, the elbow reinforcing bars are perpendicular to the plate body and are uniformly arranged on the periphery of the plurality of sealing holes in an encircling mode, and the elbow reinforcing bars are located on one side, away from the locking nuts, of the plate body.
Compared with the prior art, the water stop steel plate anti-seepage structure of the pressure type unbonded prestressed anti-floating anchor rod has the following beneficial effects: according to the scheme, a metal pressing pipe pressing and sealing mode is adopted at the water stop plate part, and the water swelling rubber is matched, so that the base water can be well blocked and prevented from seeping upwards through the gap of the outer wall of the unbonded steel stranded wire and the inner gap of the wire diameter stranded steel stranded wire; the structural form of the scheme can adapt to the change of the number of the steel strands from 1 to N, and the application occasion is more comprehensive.
Drawings
Fig. 1 is a schematic view of a sealing structure at a water stop steel plate according to an embodiment of the present invention;
FIG. 2 is an enlarged partial view at I of FIG. 1;
fig. 3 is a front view schematically illustrating a water stop steel plate according to an embodiment of the present invention;
fig. 4 is a schematic side view of a water stop steel plate according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional front view of a compression sleeve according to an embodiment of the present invention;
FIG. 6 is a schematic side view of a compression sleeve according to an embodiment of the present invention;
FIG. 7 is a schematic front view of a seal ring according to an embodiment of the present invention;
FIG. 8 is a side cross-sectional schematic view of a seal ring according to an embodiment of the present invention;
FIG. 9 is a schematic front view of a lock nut according to an embodiment of the present invention;
FIG. 10 is a side cross-sectional schematic view of a lock nut according to an embodiment of the present invention;
FIG. 11 is a schematic front view of a steel strand isolation bracket according to an embodiment of the present invention;
fig. 12 is a side view schematic of a steel strand isolation bracket according to an embodiment of the present invention.
Description of the main reference numerals:
1-water stop steel plate, 101-plate body, 102-elbow steel bar, 103-sealing hole, 2-pressing sleeve, 201-external thread, 202-sealing step, 3-sealing ring, 301-sealing tongue, 4-locking nut, 5-water stop ring, 6-steel strand isolation support, 601-arc groove, 602-wire through hole, 10-non-adhesive steel strand and 101-outer protective layer.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 2, a watertight steel plate anti-seepage structure of a pressure type unbonded prestressed anti-floating anchor according to a preferred embodiment of the present invention is provided in a watertight steel plate assembly adjacent to a fixed end anchor assembly of the pressure type unbonded prestressed anti-floating anchor, and the watertight steel plate assembly mainly includes a watertight steel plate 1, a plurality of press sleeves 2, a packing 3, a lock nut 4, and the like.
As shown in fig. 3 to 4, in some embodiments, a water-stop steel plate 1 is disposed at one end of a fixed-end anchor assembly near a pressure-type unbonded prestressed anti-floating anchor rod, and the water-stop steel plate 1 includes a plate body 101, a plurality of sealing holes 103, and a plurality of bent reinforcing bars 102. A plurality of sealing holes 103 are uniformly arranged around the center of the plate body 101 in an encircling manner, and a plurality of unbonded steel stranded wires 10 of the pressure type unbonded prestressed anti-floating anchor rod penetrate through the plurality of sealing holes 103. A plurality of elbow reinforcing bars 102 are perpendicular to the plate body 101 and are uniformly arranged around the periphery of the plurality of sealing holes 103, and the plurality of elbow reinforcing bars 102 are positioned on one side of the plate body 101 far away from the locking nut 4. The plurality of bent reinforcing bars 102 may serve to support and reinforce the coupling strength with the concrete.
As shown in fig. 5 to 6, in some embodiments, a plurality of pressure sleeves 2 are sleeved on a plurality of unbonded steel strands 10, and the pressure sleeves 2 are connected with the outer protective layer 101 of the unbonded steel strands 10 by means of a pipe press and are made of PE as a sealing medium, and form a sealing structure on the unbonded steel strands 10. One end of each pressure sleeve 2 comprises an external thread 201, and the external thread 201 penetrates through the sealing hole 103. Each compression sleeve 2 further comprises a root sealing step 202 provided to the external thread 201 of the compression sleeve 2.
As shown in fig. 7 to 10, in some embodiments, the seal ring 3 is fitted around the root of the external thread 201 at one end of each of the pressure sleeve pipes 2 and is located at one side of the seal hole 103. The lock nut 4 is screwed on the portion of the external thread 201 of the compression sleeve 2 exposed to the other side of the seal hole 103. The sealing ring 3 comprises a sealing tongue 301 which is annularly arranged at the edge of an inner hole of the sealing ring 3 and protrudes along the axis direction, after the sealing ring 3 is extruded by the sealing step 202 of the pressure sleeve 2 and the plate body 101 of the water stop steel plate 1, the sealing tongue 301 goes deep and is filled in a gap between the sealing hole 103 and the unbonded steel stranded wire 10. Thus, the sealing hole 103, the pressing sleeve 2, the sealing ring 3 and the locking nut 4 form an anti-seepage structure of the water stop steel plate 1 assembly.
In some embodiments, the watertight steel plate impermeable structure of the pressure type unbonded prestressed anti-floating anchor rod further comprises a watertight ring 5 coated outside the sealing ring 3. The water stop ring 5 is made of water-swelling material, wraps the sealing ring 3, and firmly seals the joint of the pressure sleeve 2 and the sealing hole 103 to form another sealing structure.
In the embodiment, the unbonded steel stranded wires 10 are used as an example, a steel stranded wire isolation bracket 6 with a non-standard size is arranged at every other section on a wire bundle consisting of a plurality of unbonded steel stranded wires 10, as shown in fig. 12 to 12, the steel stranded wire isolation bracket 6 generally comprises a plurality of arc-shaped grooves 601 uniformly distributed on the outer edge thereof and a plurality of wire passing holes 602 uniformly arranged around the center periphery thereof. The curved slot 601 is used to separate the plurality of unbonded steel strands 10 from each other so that the strands are not twisted together as much as possible. The wire through hole 602 may be used for the penetration of the unbonded steel strand 10 or the center grouting pipe.
In some embodiments, although the present embodiment is described by way of example with unbonded steel strands, the watertight steel sheet impermeable structure of the present invention is also applicable to the use of, for example, but not limited to, slow-bonding steel strands.
In conclusion, the water stop steel plate anti-seepage structure of the pressure type unbonded prestressed anti-floating anchor rod has the following advantages: according to the scheme, a metal pressing pipe pressing and sealing mode is adopted at the water stop plate part, and the water swelling rubber is matched, so that the base water can be well blocked and prevented from seeping upwards through the gap of the outer wall of the unbonded steel stranded wire and the inner gap of the wire diameter stranded steel stranded wire; the structural form of the scheme can adapt to the change of the number of the steel strands from 1 to N, and is also suitable for the use of, for example, but not limited to, the slow-bonding steel strands, and the application occasions are more comprehensive.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the utility model and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the utility model and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a stagnant water steel sheet seepage prevention structure of pressure type unbonded prestressing force anti-floating anchor rod, its setting is being close to in the stagnant water steel sheet subassembly of the stiff end ground tackle subassembly of pressure type unbonded prestressing force anti-floating anchor rod, its characterized in that, stagnant water steel sheet subassembly includes:
stagnant water steel sheet, it includes:
a plate body; and
the pressure type unbonded prestressed anti-floating anchor rod comprises a plate body, a plurality of sealing holes, a plurality of anchor rods and a plurality of anchor rods, wherein the plate body is provided with a plurality of sealing holes;
the plurality of pressure sleeves are sleeved on the plurality of unbonded steel stranded wires, one end of each pressure sleeve comprises an external thread, and the external thread penetrates through the sealing hole;
the sealing ring is sleeved at the root part of the external thread at one end of each pressure sleeve and is positioned at one side of the sealing hole; and
the locking nut is screwed on the part of the external thread of the pressing sleeve exposed out of the other side of the sealing hole;
wherein the sealing hole, the pressing sleeve, the sealing ring and the locking nut form the anti-seepage structure of the water stop steel plate.
2. The watertight steel sheet anti-seepage structure of the pressure type unbonded prestressed anti-floating anchor rod as set forth in claim 1, wherein each of the compression sleeves further comprises a sealing step provided at a root of the external thread of the compression sleeve.
3. The watertight structure of the pressure type unbonded prestressed anti-floating anchor rod as claimed in claim 2, wherein the sealing ring comprises a sealing tongue annularly disposed at an edge of an inner hole of the sealing ring and protruding in an axial direction, and after the sealing ring is pressed by the sealing step of the pressing sleeve and the body of the watertight steel plate, the sealing tongue penetrates into and fills a gap between the sealing hole and the unbonded steel strand.
4. The watertight steel sheet anti-seepage structure of the pressure type unbonded prestressed anti-floating anchor rod according to claim 2, further comprising a watertight ring which is wrapped outside the sealing ring.
5. The watertight steel sheet anti-seepage structure of the pressure type unbonded prestressed anti-floating anchor rod as claimed in claim 4, wherein the watertight ring is made of water-swelling material.
6. The watertight structure of the pressure type unbonded prestressed anti-floating anchor rod according to claim 1, wherein the watertight structure further comprises a plurality of elbow reinforcing bars vertically and uniformly surrounding the plate body at the periphery of the plurality of sealing holes, and the plurality of elbow reinforcing bars are located at a side of the plate body away from the locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121882786.6U CN215715259U (en) | 2021-08-12 | 2021-08-12 | Pressure type unbonded prestressed anti-floating anchor rod water-stop steel plate seepage-proofing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121882786.6U CN215715259U (en) | 2021-08-12 | 2021-08-12 | Pressure type unbonded prestressed anti-floating anchor rod water-stop steel plate seepage-proofing structure |
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| Publication Number | Publication Date |
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| CN215715259U true CN215715259U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121882786.6U Active CN215715259U (en) | 2021-08-12 | 2021-08-12 | Pressure type unbonded prestressed anti-floating anchor rod water-stop steel plate seepage-proofing structure |
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| CN (1) | CN215715259U (en) |
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- 2021-08-12 CN CN202121882786.6U patent/CN215715259U/en active Active
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