CN210396775U - Yielding anchor rod capable of self-recovering deformation - Google Patents

Yielding anchor rod capable of self-recovering deformation Download PDF

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Publication number
CN210396775U
CN210396775U CN201920789996.7U CN201920789996U CN210396775U CN 210396775 U CN210396775 U CN 210396775U CN 201920789996 U CN201920789996 U CN 201920789996U CN 210396775 U CN210396775 U CN 210396775U
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steel plate
rib
self
deformation
rod
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CN201920789996.7U
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Chinese (zh)
Inventor
涂兵雄
童江
章钧翔
任泽林
贾金青
俞缙
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Huaqiao University
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Huaqiao University
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Abstract

The utility model discloses a yielding anchor rod capable of self-recovering deformation, which comprises a rib body, a sleeve and a bearing box arranged at the bottom of the rib body, wherein the rib body is sleeved with the sleeve at the head part of the rib body to the bearing box, the bearing box comprises a bearing steel plate, a guide rod, a high-strength steel spring, an extrusion steel plate and a cylinder, the bearing steel plate is sleeved on the rib body, the lower side of the bearing steel plate is vertically provided with not less than two guide rods, the guide rod is screwed on the bearing steel plate, the high-strength steel spring is sleeved outside all the guide rods, the bottom of the high-strength steel spring is provided with the extrusion steel plate, the extrusion steel plate is provided with a rod penetrating hole matched with the guide rod and a rib penetrating hole matched with the rib body, the guide rod at the bottom of the extrusion steel plate is provided with a limit nut, the rib body at the bottom of the extrusion steel plate is provided with a clamp, the cylinder is fixedly arranged on the pressure-bearing steel plate.

Description

Yielding anchor rod capable of self-recovering deformation
Technical Field
The utility model relates to an anchor engineering field especially relates to a yielding stock that warp self-resuming. The support is suitable for supporting projects such as coal mine tunnels, highway embankment slopes and the like.
Background
At present, the geotechnical anchoring technology is widely applied to projects such as coal mine tunnels, tunnel engineering, highway slopes, building foundation pit hydraulic dams, structural anti-floating and the like. The force transmission path of the traditional tension type anchor rod is that the anchor head is utilized to directly transmit tension to a grouting body of an anchoring section through a rib body and then to a soil body through an interface between the grouting body and the soil body; the traditional pressure type anchor rod transmits force by directly transmitting tension to the bottom of an anchoring section through an anchor head, extruding grouting body through a bearing plate connected with a rib body and further transmitting the grouting body to a soil body through an interface between the grouting body and the soil body.
In actual engineering, a large number of engineering anchor rods are more complicated in load action. For example, the anchor rods for supporting the side slopes of the road embankment are subjected to the reciprocating traffic load of the running load-carrying vehicle for a long time, and the generated vibration enables the load on the anchor rods to fluctuate in a reciprocating manner; when the urban foundation pit is close to the traffic road, the supporting structure of the foundation pit is inevitably impacted by a heavy vehicle on the road, a heavy hoisting machine on the slope top of the foundation pit on the construction site and a concrete transport vehicle; when the underground structural engineering adopts the anti-floating anchor rod, the underground structural engineering can be subjected to the reciprocating rising and falling of the underground water level; the anchor rod supported slope project is adopted, and when an earthquake occurs, a larger impact action can be instantly borne; when the surrounding rock of the coal mine roadway and the tunnel is supported, rock burst can be generated due to stress release of the surrounding rock to generate impact of different degrees on the supporting structure, and then the impact force is transmitted to the anchor rod for supporting the surrounding rock. The reciprocating load and the instantaneous impact effect can generate unrecoverable plastic deformation on the anchor rod and gradually accumulate, finally, the displacement of the anchor head is increased, and serious risks are brought to a supporting structure. When the anchor rod is impacted and loaded, the energy cannot be consumed, and the anchor rod rib body, the interface of the rib body and the grouting body and the interface of the grouting body and the soil body can be damaged to different degrees, so that the later safety operation of the anchoring engineering is endangered.
Therefore, when the traditional anchor rod bears reciprocating load and impact action, serious potential safety hazard and durability problems exist. If stock self structure can let along with reciprocal load in step and press the deformation, absorb the impact energy when receiving the load impact, when the impact action dissipation, can rely on the self-releasing of absorbed impact energy again to resume the stock and warp, warp and resume from the anchoring performance that will improve the stock greatly, guarantee the bearing capacity of stock to improve the life of stock.
There are a few bolt devices with yielding effect on the market, but these devices are difficult to apply to actual engineering, mainly because of the following reasons: (1) the device must guarantee that the yielding spring freely stretches to realize the yielding function, and when the anchor rod is applied to engineering, particularly permanent anchoring engineering, the anchor head must be strictly packaged and protected. And let the pressure equipment setting at the anchor head, be unfavorable for the encapsulation protection construction of anchor head. (2) The anchor rod needs to transmit the acting force of the rock stratum to the anchor head through the building envelope to realize the supporting function. For projects such as tunnels and coal mine tunnels, the requirement on space is high, the pressure yielding device arranged outside the enclosure structure certainly occupies the excavated space greatly, the thickness of tunnel lining can be increased seriously, the clearance size of the coal mine tunnel is reduced seriously, and the construction is inconvenient or the construction cost is increased greatly. (3) The pressure yielding device is arranged at the anchor head, is easy to be damaged by collision of construction machinery during construction, and particularly easily collides the anchor head when an earth excavation machine is constructed.
In view of the above, the present inventors have made extensive studies on anchor rod structures, and have made this disclosure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a warp from yielding stock of pressing that resumes to overcome the weak point that traditional stock exists when reply reciprocal load and impact, solve the safety problem and the durability problem of stock.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a yielding anchor rod capable of self-recovering in deformation comprises a rib body, a sleeve and a bearing box arranged at the bottom of the rib body, wherein the sleeve is sleeved at the head of the rib body to the bearing box, the bearing box comprises a bearing steel plate, guide rods, a high-strength steel spring, an extrusion steel plate and a cylinder, the bearing steel plate is sleeved on the rib body, the lower side of the bearing steel plate is vertically provided with at least two guide rods, the guide rods are in threaded connection with the bearing steel plate, the high-strength steel spring is sleeved outside all the guide rods, the extrusion steel plate is arranged at the bottom of the high-strength steel spring, rod penetrating holes matched with the guide rods and rib penetrating holes matched with the rib body are arranged on the extrusion steel plate, limit nuts are arranged on the guide rods at the bottom of the extrusion steel plate, and clamps are arranged on the rib body at the bottom of the extrusion steel plate, the cylinder is fixedly arranged on the pressure-bearing steel plate.
Further, the sleeve is fixed on the pressure-bearing steel plate in a threaded manner.
Further, the pressure-bearing steel plate is a circular plate, the cylinder is a cylindrical cylinder with an opening at one end, a cylinder internal thread is arranged on the inner side of the opening, a plate external thread is arranged on the outer side surface of the pressure-bearing steel plate, the cylinder is fixedly arranged on the pressure-bearing steel plate through the thread matching of the cylinder internal thread and the plate external thread, and the guide rod, the high-strength steel spring, the extrusion steel plate and the clamp are all arranged in the cylinder.
Furthermore, the lower side of the pressure-bearing steel plate is correspondingly provided with a guide groove for the upper end of each guide rod to be screwed.
Furthermore, a groove internal thread is arranged in the guide groove, and the depth of the guide groove is 10-20 mm.
Furthermore, the guide grooves are symmetrically distributed on the pressure-bearing steel plate.
Furthermore, the center of the pressure-bearing steel plate is correspondingly provided with a through hole for the rib body to penetrate.
Further, the bore is provided with an in-plate thread.
Furthermore, a first rod end wire and a second rod end wire are respectively arranged at two ends of the guide rod, the length of the first rod end wire is 15-25mm, the length of the second rod end wire is 30-60mm, and the length of the guide rod is 60-150mm longer than the height of the high-strength steel spring.
Further, the high-strength steel spring is a spiral cylindrical spring.
Further, the cylindrical inner diameter of the high-strength steel spring is 5-10mm larger than the outer diameter of the circumscribed circle of the guide rod.
Furthermore, the extrusion steel plate is a circular steel plate, a rib penetrating hole for the rib body to penetrate is formed in the center of the extrusion steel plate, and a rod penetrating hole for the guide rod to penetrate is correspondingly formed in the extrusion steel plate in an annular mode.
Furthermore, after the bottom end of the rib body penetrates through the rib penetrating hole, a matched clamp is installed.
Further, the extrusion steel plate is installed on the guide rod through a limiting nut.
Further, the net distance between the bottom end of the rib body and the bottom end of the guide rod and the bottom of the cylinder is 10-20 mm.
Adopt above-mentioned technical scheme, the utility model discloses a yielding self-resuming lets press stock sets up the bearing case through the bottom at the muscle body, makes the utility model discloses the stock has following advantage: (1) by adjusting the rigidity of the high-strength steel spring, when the anchor rod bears reciprocating load, the anchor head is deformed and self-recovered by means of compression and rebound of the high-strength steel spring, and the stress state of the anchor rod is greatly improved. (2) When the anchor rod bears impact load or earthquake action, impact energy can be consumed through compression of the high-strength steel spring, damage to the anchor rod and a supporting structure is greatly reduced, and when the impact load disappears or the earthquake action is finished, the high-strength steel spring automatically rebounds and extends, and the anchor head deforms and recovers. (3) The bearing box is arranged at the bottom of the rib body, construction and installation are facilitated, and the grouting body outside the bearing box has a good protection effect on the bearing box. (4) Because the bearing box is arranged at the bottom of the rib body, the anchor head of the bearing box can be directly connected with the enclosure structure according to the construction method of the anchor head of the traditional anchor rod, when the bearing box is applied to a coal mine tunnel and tunnel engineering, the lining thickness of the tunnel can be reduced to the greatest extent, the clearance size of the coal mine tunnel is increased, the anchor head can be effectively protected during construction, and damage is prevented.
Drawings
FIG. 1 is a schematic structural view of the present invention installed in a soil layer;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of the cross-sectional structure of the cylinder of the present invention;
FIG. 4 is a schematic structural diagram of a cross section of a pressure-bearing steel plate of the present invention;
fig. 5 is a schematic top view of the pressure-bearing steel plate of the present invention;
fig. 6 is a schematic bottom view of the pressure-bearing steel plate of the present invention;
FIG. 7 is a schematic view of the cross-sectional structure of the extruded steel sheet of the present invention;
FIG. 8 is a schematic structural view of an extruded steel sheet according to the present invention;
FIG. 9 is a schematic view of the structure of the guide bar of the present invention;
fig. 10 is a schematic view of the structure of the sleeve of the present invention.
Reference numerals and symbol descriptions
Rib 11 casing 12
Anchor 21 with screw thread 121
Anchor backing plate 22 pressure-bearing box 3
Bearing steel plate 31 plate external thread 311
Through hole 312 plate internal thread 313
Internal groove thread 315 of guide groove 314
First rod end wire 321 of guide rod 32
Second rod end wire 322 stop nut 323
The high-strength steel spring 33 presses the steel plate 34
The rib hole 341 and the rod hole 342
Clamp 35 cylinder 36
Barrel internal thread 361 grouting body 4
Soil body 5 borehole 6
Detailed Description
Referring to fig. 1-10, the present invention relates to a yielding anchor rod capable of self-restoring deformation, which comprises a rib body 11, a sleeve 12, an anchorage device 21, an anchor backing plate 22 and a bearing box 3 arranged at the bottom of the rib body 11.
For convenience of description, the up-down direction shown in fig. 1 is taken as the up-down direction in the present specification.
The sleeve 12 is sleeved from the head of the rib body 11 to the bearing box 3, the bearing box 3 comprises a bearing steel plate 31, guide rods 32, high-strength steel springs 33, an extrusion steel plate 34 and a cylinder 36, the bearing steel plate 31 is sleeved on the rib body 11, at least two guide rods 32 are vertically arranged on the lower side of the bearing steel plate 31, the guide rods 32 are screwed on the bearing steel plate 31, the high-strength steel springs 33 are sleeved outside all the guide rods 32, the extrusion steel plate 34 is arranged at the bottom of the high-strength steel springs 33, rod penetrating holes 342 matched with the guide rods 32 and rib penetrating holes 341 matched with the rib body 11 are formed in the extrusion steel plate 34, limit nuts 323 are arranged on the guide rods 32 at the bottom of the extrusion steel plate 34, and clamps 35 are arranged on the rib body 11 at the bottom of the extrusion steel plate 34.
The pressure-bearing steel plate 31 is a circular plate, the cylinder 36 is a cylindrical cylinder with an opening at one end, a cylinder internal thread 361 is arranged on the inner side of the opening end, a plate external thread 311 is arranged on the outer side surface of the pressure-bearing steel plate 31, the cylinder 36 is fixedly arranged on the pressure-bearing steel plate 31 through the cylinder internal thread 361 and the plate external thread 311 in a matched mode, and the guide rod 32, the limiting nut 323, the high-strength steel spring 33, the extrusion steel plate 34 and the clamp 35 are all arranged in the cylinder 36.
The lower side of the pressure-bearing steel plate 31 is correspondingly provided with a guide groove 314 for the upper end of each guide rod 32 to be screwed. The guide groove 314 is internally provided with a groove internal thread 315, and the depth of the guide groove 314 is 10-20 mm.
The guide grooves 314 are symmetrically distributed on the pressure-bearing steel plate 31. The center of the pressure-bearing steel plate 31 is correspondingly provided with a through hole 312 for the tendon 11 to penetrate. The perforation 312 of the pressure-bearing steel plate 31 is provided with an internal plate thread 313. The bottom end of the sleeve 12 is provided with a bolt thread 121, and the sleeve 12 is fixed on the pressure-bearing steel plate 31 through the matching of the bolt thread 121 and the plate internal thread 313.
The two ends of the guide rod 32 are respectively provided with a first rod end wire 321 and a second rod end wire 322, the first rod end wire 321 is in threaded connection with the internal groove thread 315, the second rod end wire 322 passes through the rod penetrating hole 342 of the extrusion steel plate 34 and is in threaded connection with the limiting nut 323, the length of the first rod end wire 321 is 15-25mm, the length of the second rod end wire 322 is 30-60mm, and the length of the guide rod 32 is 60-150mm longer than the height of the high-strength steel spring 33. The high-strength steel spring 33 is a helical cylindrical spring. The cylindrical inner diameter of the high-strength steel spring 33 is 5-10mm larger than the outer diameter of the circumscribed circle of the guide rod 32.
The extrusion steel plate 34 is a circular steel plate, the center of the extrusion steel plate 34 is provided with a rib penetrating hole 341 for the rib body 11 to penetrate, and the extrusion steel plate 34 is correspondingly provided with a rod penetrating hole 342 for the guide rod 32 to penetrate. The extruded steel plate 34 is mounted on the guide bar 32 by a limit nut 323. After the rib body 11 passes through the rib penetrating hole 341 of the extruded steel plate 34, a matched clamp 35 is installed at the end head. After the tendon body 11 and the guide rod 32 are installed, the net distance between the bottom end of the tendon body 11 and the bottom end of the guide rod 32 and the bottom of the cylinder 36 is 10-20 mm.
Preferably, the end of the cylinder 36 is hemispherical, which facilitates the insertion of the pressure-bearing box 3 into the borehole 6. The cylinder 36 is made of a synthetic resin material or a steel material.
The utility model relates to a warp pressure stock that lets of self-resuming, its construction procedure as follows:
(1) processing the rib body 11 and the sleeve 12 according to the designed length, and manufacturing a screw thread 121; screwing the guide rod 32 into the guide groove 314 of the pressure-bearing steel plate 31;
(2) penetrating the rib body 11 into the pressure-bearing steel plate 31 from the smooth surface side (the side facing away from the cylinder 36) of the pressure-bearing steel plate 31, wherein the end head exceeds the end head of the guide rod 32 by about 100mm, sleeving the sleeve 12 onto the rib body 11 from the anchor head to the direction of the pressure-bearing steel plate 31, and screwing the screw thread 121 at the end head of the sleeve 12 and the plate internal thread 313 of the pressure-bearing steel plate 31 tightly;
(3) sleeving a high-strength steel spring 33 on the guide rod 32; after the rib penetrating holes 341 of the extrusion steel plate 34 are aligned with the rib body 11 and the rod penetrating holes 342 are respectively aligned with the guide rods 32, the extrusion steel plate 34 is sleeved on the rib body 11 and the guide rods 32;
(4) screwing the limiting nut 323 from the end of the guide rod 32 until the pressing steel plate 34 slightly presses the high-strength steel spring 33; installing a clamp 35 from the end of the rib body 11; then the cylinder 36 is screwed into the pressure-bearing steel plate 31 from the direction from the guide rod 32 to the pressure-bearing steel plate 31, and the manufacturing of the rib body 11 and the pressure-bearing box 3 is completed;
(5) and (3) placing the bearing box 3 into the drill hole 6, injecting grout into the drill hole 6 to be full, enabling the grout body 4 to wrap the bearing box 3, installing an anchor backing plate 22 at the hole opening after the strength of the grout body 4 meets the design requirement, and locking the rib body 11 by using an anchorage device 21, thereby completing the construction of the anchor rod.
Because technical scheme's application, compare with traditional stock technique, the utility model has the following advantage of showing:
(1) use the utility model relates to a warp during from yielding the pressure stock of recovery, set up the stock in the soil layer during normal condition, under the effect of stock pretension, the muscle body 11 promotes the appropriate compression steel spring 33 that excels in of extrusion steel sheet 34 through anchor clamps 35. When the anchor rod is impacted, the rib body 11 directly transmits the tensile force to the extrusion steel plate 34 in the pressure bearing box 3, when the extrusion steel plate 34 moves towards the head of the rib body 11 along the guide rod 32, the extrusion steel plate 34 compresses the high-strength steel spring 33, and in the process, the high-strength steel spring 33 deforms by 'yielding' to store and absorb impact energy; after the impact action is finished, the high-strength steel spring 33 rebounds to push the extrusion steel plate 34 to reset the rib body 11, and at the moment, the energy is released through the deformation self-recovery in the pressure bearing box 3. The high-strength steel spring 33 can control the absorption and release of energy by means of the elastic compression and extension of the high-strength steel spring, so that the function of self-recovery of the deformation of the anchor head is realized, the impact action can be prevented from directly acting on the grouting body 4 through the rib body 11, and the damage and even the damage of the bonding performance of the interface of the grouting body 4 and the soil body 5 are greatly reduced; even when the rib body 11 directly bears the impact, the fracture accident caused by the overlarge deformation of the rib body 11 can be avoided.
(2) When the anchor rod is under the action of reciprocating load, the high-strength steel springs 33 with different rigidity can be designed according to the stress working conditions of the anchor rod so as to match different stress working conditions, and in the process of increasing and reducing the load in a reciprocating mode, the high-strength steel springs 33 can cooperate with the load through repeated compression and extension of the length of the high-strength steel springs. The 'yielding' phenomenon generated by the compression of the high-strength steel spring 33 can lead the anchor head to be deformed actively, greatly improve the stress state of the anchoring body and avoid the unrecoverable plastic deformation accumulation of the rib body 11. The high-strength steel spring 33 can make the anchor head deform passively when being extended, and the function of deformation self-recovery is realized. The deformation control of the anchor rod supporting structure is facilitated, the overall stress of the structure is optimized, the shear deformation damage accumulation of the interface of the grouting body 4 and the soil body 5 caused by the grouting body 4 under the reciprocating load effect is reduced, and the service life of the anchor rod is greatly prolonged.
(3) The bearing box 3 is arranged at the bottom of the rib body 11, construction and installation are convenient, and the grouting body 4 outside the bearing box 3 has a good protection effect on the bearing box 3.
(4) Because the bearing box 3 is arranged at the bottom of the rib body 11, the anchor head of the bearing box can be directly connected with the enclosure structure according to the construction method of the anchor head of the traditional anchor rod, the occupied space of the anchor head positioned outside the soil layer is small, when the bearing box is applied to coal mine tunnels and tunnel engineering, the thickness of tunnel linings can be reduced to the greatest extent, the clearance size of the coal mine tunnels is increased, the anchor head can be effectively protected during construction, and damage is prevented.
The present invention has been described in detail with reference to the accompanying drawings, but the embodiments of the present invention are not limited to the above embodiments, and those skilled in the art can make various modifications according to the prior art, and all belong to the protection scope of the present invention.

Claims (15)

1. The utility model provides a yielding anchor rod capable of self-recovering deformation, which is characterized in that: comprises a rib body, a sleeve and a bearing box arranged at the bottom of the rib body, wherein the sleeve is sleeved on the head of the rib body to the bearing box, the bearing box comprises a bearing steel plate, a guide rod, a high-strength steel spring, an extrusion steel plate and a cylinder, the bearing steel plate is sleeved on the rib body, at least two guide rods are vertically arranged on the lower side of the pressure-bearing steel plate, the guide rods are in threaded connection with the pressure-bearing steel plate, the high-strength steel spring is sleeved outside all the guide rods, the bottom of the high-strength steel spring is provided with the extrusion steel plate, the extrusion steel plate is provided with a rod penetrating hole matched with the guide rod and a rib penetrating hole matched with the rib body, the guide rod is positioned at the bottom of the extrusion steel plate and is provided with a limiting nut, the rib body is positioned at the bottom of the extrusion steel plate and is provided with a clamp, and the cylinder is fixedly arranged on the pressure-bearing steel plate.
2. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the sleeve is fixed on the pressure-bearing steel plate in a screwed mode.
3. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the pressure-bearing steel plate is a circular plate, the cylinder is a cylindrical cylinder with an opening at one end, a cylinder internal thread is arranged on the inner side of the opening, a plate external thread is arranged on the outer side surface of the pressure-bearing steel plate, the cylinder is fixedly arranged on the pressure-bearing steel plate through the thread matching of the cylinder internal thread and the plate external thread, and the guide rod, the limiting nut, the high-strength steel spring, the extrusion steel plate and the clamp are all arranged in the cylinder.
4. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: and guide grooves for the upper ends of the guide rods to be screwed are correspondingly formed in the lower side of the pressure-bearing steel plate.
5. A yielding bolt capable of self-recovering from deformation according to claim 4, characterized in that: the guide groove is internally provided with a groove internal thread, and the depth of the guide groove is 10-20 mm.
6. A yielding bolt capable of self-recovering from deformation according to claim 4, characterized in that: the guide grooves are symmetrically distributed on the pressure-bearing steel plate.
7. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: and the center of the pressure-bearing steel plate is correspondingly provided with a through hole for the rib body to penetrate.
8. A yielding bolt capable of self-recovering from deformation according to claim 7, characterized in that: the through hole is provided with an in-plate thread.
9. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the high-strength steel spring is characterized in that a first rod end wire and a second rod end wire are respectively arranged at two ends of the guide rod, the length of the first rod end wire is 15-25mm, the length of the second rod end wire is 30-60mm, and the length of the guide rod is 60-150mm longer than the height of the high-strength steel spring.
10. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the high-strength steel spring is a spiral cylindrical spring.
11. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the cylindrical inner diameter of the high-strength steel spring is 5-10mm larger than the outer diameter of the circumscribed circle of the guide rod.
12. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the extrusion steel plate is a circular steel plate, a rib penetrating hole for the rib body to penetrate is formed in the center of the extrusion steel plate, and a rod penetrating hole for the guide rod to penetrate is correspondingly formed in the extrusion steel plate in an annular mode.
13. A yielding bolt capable of self-recovering from deformation according to claim 12, wherein: and after the bottom end of the rib body penetrates through the rib penetrating hole, a matched clamp is installed.
14. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the extrusion steel plate is installed on the guide rod through a limiting nut.
15. The yielding bolt capable of self-recovering from deformation according to claim 1, characterized in that: the net distance between the bottom end part of the rib body and the bottom end part of the guide rod and the bottom of the cylinder is 10-20 mm.
CN201920789996.7U 2019-05-29 2019-05-29 Yielding anchor rod capable of self-recovering deformation Active CN210396775U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920789996.7U CN210396775U (en) 2019-05-29 2019-05-29 Yielding anchor rod capable of self-recovering deformation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920789996.7U CN210396775U (en) 2019-05-29 2019-05-29 Yielding anchor rod capable of self-recovering deformation

Publications (1)

Publication Number Publication Date
CN210396775U true CN210396775U (en) 2020-04-24

Family

ID=70347213

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920789996.7U Active CN210396775U (en) 2019-05-29 2019-05-29 Yielding anchor rod capable of self-recovering deformation

Country Status (1)

Country Link
CN (1) CN210396775U (en)

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