CN111691416B

CN111691416B - Using method of manual push-pull semi-recovery anchor rod

Info

Publication number: CN111691416B
Application number: CN202010556515.5A
Authority: CN
Inventors: 刘秀军; 张加粮; 齐明柱; 贺建清; 李爱国; 刘栋; 黄会文; 彭建阁
Original assignee: Shenzhen Geotechnical Investigation & Surveying Institute Group Co ltd
Current assignee: Shenzhen Geotechnical Investigation & Surveying Institute Group Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-07-06
Anticipated expiration: 2040-06-17
Also published as: CN111691416A

Abstract

The invention relates to the technical field of anchor rod support in geotechnical engineering, and discloses a use method of a manual push-pull semi-recovery anchor rod, which comprises the following steps: s1, forming holes; s2, assembling the rod body and the anchoring cylinder; s3, grouting; s4, tensioning and locking; s5, recovering the rod body; through magnet piece, pole head guard shield and manpower push-and-pull, can be so that the pole wing of the body of rod is in respectively and props up and withdraw two kinds of states: when in a supporting state, the rod wings are clamped on the anchor plate, so that the force on the rod body can be transmitted to the anchor plate through the rod wings and further transmitted to the rock-soil body through the anchor bodies on the periphery of the anchor plate; when the anchor rod is in a withdrawing state, the rod head can penetrate through the central hole of the anchor plate, and then the rod body and the anchor cylinder can be assembled or the rod body can be withdrawn, so that the anchor rod can be assembled or withdrawn without mechanical equipment, and the anchor rod is time-saving, labor-saving, convenient, rapid and efficient.

Description

Using method of manual push-pull semi-recovery anchor rod

Technical Field

The invention relates to the technical field of anchor rod support in geotechnical engineering, in particular to a using method of a manual push-pull semi-recovery anchor rod.

Background

Currently, in various geotechnical engineering in China, such as slope stabilization engineering, underground chamber engineering, structural anti-floating engineering, deep foundation pit engineering, high-pressure water conveying pipeline engineering and the like, anchor rod supporting technology is rapidly developed and widely applied, and development of geotechnical engineering technology is greatly promoted. However, for temporary support projects using conventional anchor rods, after the construction is completed, a large number of anchor rods are buried in the ground and cannot be recovered, which not only occupies a large amount of underground space and forms underground garbage, but also causes the remaining anchor rods to interfere with the normal construction of subsequent projects and waste of a large amount of steel materials.

Therefore, a recoverable bolt is a necessary product of the development of bolt technology. The currently known recoverable anchor rod technology mainly comprises three types of mechanical recovery, mechanical recovery and chemical recovery, but the cost of the three recovery methods is not low: the mechanical type needs mechanical equipment, so that the construction is inconvenient and the process is complicated; mechanical recovery only needs to apply force to a recovery rod (cable), but the force is not very small, and a special jack or other equipment is needed; the hot melt or the explosion device need be installed in advance to the chemical formula is retrieved, starts hot melt device or explosion device during the recovery, and the body of rod material of fusing partly still can be retrieved with the help of mechanical equipment in addition. Others, such as: the recovery of the back spring-out non-bond steel strand rotary type recoverable enlarged head anchor rod, the recoverable plastic expansion sleeve type anchor rod and the like also needs to provide drawing force by means of mechanical equipment.

Therefore, the above-mentioned recoverable anchor rod recovery technology is not only tedious, but also time-consuming and labor-consuming, and compared with the anchor rod that needs to be recovered by mechanical equipment, the research and development work of the recoverable anchor rod technology that can be recovered by manpower alone is especially necessary.

Disclosure of Invention

In order to solve the existing technical problems, the invention provides a using method of a manual push-pull semi-recovery anchor rod.

The invention is realized in this way, a method for using a manpower push-pull semi-recovery anchor rod, the manpower push-pull semi-recovery anchor rod comprises: the rod body comprises a rod body, an anchoring cylinder, an anchoring body, an anchorage device, an anchor backing plate and an anchor seat, wherein the rod body comprises a rod body, a rod head and a rod wing, the anchoring cylinder comprises a rod body protecting cylinder, an anchoring plate and a rod head protecting cover, the rod head comprises a middle rod, an angle rod, a magnet block, a clamping head and a rod wing rotating bolt, a center hole is drilled in the center of the anchoring plate, and the center hole is used for the rod head and the rod body to penetrate when the rod wing is in a retraction state;

the method specifically comprises the following steps:

s1, forming holes: according to the parameters of geological conditions, anchor rod length and anchoring body diameter, adopting construction machinery to form a hole in the anchor rod hole;

s2, assembling the rod body and the anchoring cylinder: inserting the rod body into the anchoring cylinder, allowing the rod head to completely penetrate through the central hole of the anchoring plate, detaching the rod head protective cover, opening the rod wing to a supporting state, pulling the rod body outwards to enable the rod wing to be attached to the anchoring plate, then covering the rod head protective cover, and finally putting the assembled rod body and anchoring cylinder into the hole formed in the step S1;

s3, grouting: grouting outside the anchoring cylinder, and enabling the top of the anchoring body to be flush with or lower than the top of the anchoring cylinder;

s4, tensioning and locking: after the anchoring body is solidified, stretching and locking the rod body;

s5, recovering the rod body: when the temporary supporting engineering is finished and the anchor rod is recovered, the anchor device and the anchor seat are firstly detached, then the rod body is pushed inwards by manpower, so that the rod wing is in a recovery state after being extruded by the small shield of the rod head shield, and finally the rod body can be recovered by manually pulling the rod body.

Further, a wing rotation key hole is drilled in the wing, and the rod head is connected to the wing through the wing rotation key inserted into the wing rotation key hole.

Furthermore, the cross section of the middle rod is a regular quadrangle, the central axis of the middle rod is superposed with the central axis of the rod body, and two ends of the middle rod are respectively connected with the rod body and the clamping head.

Furthermore, the angle bars are symmetrically distributed on four edges of the middle bar, two ends of each angle bar are respectively connected with the bar body and the clamping head, the magnet block is wrapped at the central part of the middle bar, and two ends of the bar wing rotating bolt are respectively connected to two adjacent angle bars.

Further, the rod wing rotates around the rod wing rotating bolt and maintains two states of retraction and support: in the retracting state, the rod wings are attracted by the magnet blocks and attached to the middle rod, and the rod wings are completely positioned in the grooves formed by the two adjacent angle rods; when the support is in a supporting state, the long edge direction of the rod wing is perpendicular to the axis direction of the middle rod, and a part of the outer surface of the rod wing is attached to the clamping head.

Further, the shaft casing is connected with the anchor plate.

Further, the diameter of the central hole is smaller than that of a circular ring formed when the rod wing is in a supporting state.

Further, the pole head guard shield with the anchor plate can be dismantled and be connected, the pole head guard shield includes big guard shield and little guard shield, little guard shield just can hold down when the pole wing withdraws the state the pole head portion will when the body of rod is pushed inwards, little guard shield will the pole wing is pressed to the well pole, the pole wing is held by the magnet piece to be in and withdraws the state.

Further, except the magnet block, the rod body and other spare and accessory parts of the anchoring cylinder are all made of steel.

Furthermore, the anchoring body, the anchorage device, the anchor backing plate and the anchor seat are designed and constructed according to the relevant standard requirements.

Compared with the prior art, the use method of the manual push-pull semi-recovery anchor rod has the following advantages: through magnet piece, pole head guard shield and manpower push-and-pull, can be so that the pole wing of the body of rod is in respectively and props up and withdraw two kinds of states: when in a supporting state, the rod wings are clamped on the anchor plate, so that the force on the rod body can be transmitted to the anchor plate through the rod wings and further transmitted to the rock-soil body through the anchor bodies on the periphery of the anchor plate; when the state is withdrawed, can make the pole head pass the centre bore of anchor plate, and then can assemble the body of rod and an anchor section of thick bamboo or retrieve the body of rod, consequently, need not to assemble or retrieve the stock body of rod with the help of mechanical equipment, labour saving and time saving, convenient high efficiency.

Drawings

FIG. 1 is a flow chart of a method of using a manually pushed and pulled semi-recovery anchor rod according to the present invention;

FIG. 2 is a transverse schematic view of a manually pushed and pulled semi-recovered bolt of the present invention;

FIG. 3 is an axial view of an anchoring section of a manual push-pull semi-recovery anchor rod according to the present invention;

FIG. 4 is a transverse view of a manually pushed and pulled semi-recoverable anchor rod of the present invention with the rod wings in a set-up position;

FIG. 5 is an axial view of a manually pushed and pulled semi-recoverable anchor rod wing of the present invention in a set-up position;

FIG. 6 is a transverse view of a manually pushed and pulled semi-recovered anchor rod of the present invention with the wings retracted;

FIG. 7 is an axial view of a manually pushed and pulled semi-recovered anchor rod wing according to the present invention in a retracted state;

FIG. 8 is a transverse view of the head of a manually pushed and pulled semi-recycled anchor rod according to the present invention;

FIG. 9 is an axial view of the head of a manually pushed and pulled semi-recycled anchor rod according to the present invention;

FIG. 10 is a transverse view of an anchoring barrel of a manually pushed and pulled semi-retracted rock bolt of the present invention;

FIG. 11 is an axial view of an anchoring barrel of a manually pushed and pulled semi-retracted rock bolt according to the present invention;

FIG. 12 is a schematic lateral view of an anchor barrel of the present invention after removing a tip shroud with a manual push-pull semi-recovery anchor;

FIG. 13 is an axial view of an anchor barrel of the present invention after removing a tip shroud with a manual push-pull semi-recovery anchor;

FIG. 14 is a schematic view of a tip shield of a manually pushed and pulled semi-recycled anchor of the present invention in a transverse direction;

fig. 15 is an axial view of a head shield of a manually pushed and pulled semi-recycled anchor of the present invention.

Wherein, 1, a rod body; 2. an anchoring cylinder; 3. an anchor; 4. an anchorage device; 5. an anchor backing plate; 6. an anchor block; 11. a shaft body; 12. a club head; 13. a lever wing; 14. a lever wing rotating keyhole; 121. a middle rod; 122. an angle bar; 123. a magnet block; 124. clamping a head; 125. a lever wing rotating bolt; 21. a rod body protecting cylinder; 22. an anchor sheet; 23. a head cover; 221. a central bore; 231. a small shield; 232. a large shield.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Referring to fig. 1-15, preferred embodiments of the present invention are provided.

The use method of the manual push-pull semi-recovery anchor rod provided by the embodiment can be used for anchor rod support of rock and soil construction, and certainly, the use method can also be used for other building constructions, and is not limited to the application in the embodiment.

A method for using a manual push-pull semi-recovery anchor rod comprises the following steps: the rod body 1 comprises a rod body 11, a rod head 12 and a rod wing 13, the anchor cylinder 2 comprises a rod body protecting cylinder 21, an anchor plate 22 and a rod head protecting cover 23, the rod head 12 comprises a middle rod 121, an angle rod 122, a magnet block 123, a clamping head 124 and a rod wing 13 rotating bolt, a center hole 221 is drilled in the center of the anchor plate 22, and the center hole 221 is used for the rod head 12 and the rod body 11 to penetrate when the rod wing 13 is in a retraction state;

the method specifically comprises the following steps:

s1, forming holes: according to the parameters of geological conditions, anchor rod length and diameter of the anchoring body 3, a construction machine is adopted to form a hole in the anchor rod hole;

s2, assembling the rod body 1 and the anchoring cylinder 2: inserting the club body 1 into the anchor cylinder 2, allowing the club head 12 to completely pass through the central hole 221 of the anchor plate 22, removing the club head shield 23, opening the wings 13 to the supported state, pulling the club body 1 outward to make the wings 13 stick to the anchor plate 22, then covering the club head shield 23, and finally placing the assembled club body 1 and anchor cylinder 2 into the hole formed in the step S1;

s3, grouting: grouting outside the anchoring cylinder 2, and enabling the top of the anchoring body 3 to be flush with the top of the anchoring cylinder 2 or slightly lower than the top of the anchoring cylinder 2;

s4, tensioning and locking: after the anchoring body 3 is solidified, stretching and locking the rod body 1;

s5, recovering the rod body 1: when the temporary supporting engineering finishes and carries out anchor rod recovery, remove ground tackle 4 and anchor seat 6 earlier, then push away the body of rod 1 inwards with the manpower for pole wing 13 is in the state of withdrawing after through little guard 231 extrusion of pole head guard 23, and the body of rod 1 can be retrieved to the manpower again of dragging.

A wing rotation bolt hole 14 is drilled on the wing 13, and the club head 12 is connected with the wing 13 through the wing 13 rotation bolt inserted in the wing rotation bolt hole 14.

The cross section of the middle rod 121 is a regular quadrangle, the central axis thereof coincides with the central axis of the rod body 11, and both ends thereof are respectively connected with the rod body 11 and the chuck 124.

The angle bars 122 are symmetrically distributed on four edges of the middle bar 121, and are respectively connected with the bar body 11 and the clamp 124 at two ends, the magnet block 123 is wrapped at the central part of the middle bar 121, and two ends of the rotary bolt of the bar wing 13 are respectively connected with two adjacent angle bars 122.

The rod wing 13 rotates around the rod wing 13 rotation pin and maintains two states of retraction and support: in the retracting state, the rod wing 13 is attracted by the magnet block 123 and attached to the middle rod 121, and the rod wing 13 is completely positioned in the groove formed by two adjacent angle rods 122; in the support state, the longitudinal direction of the lever wing 13 is perpendicular to the axial direction of the center pole 121, and a part of the outer surface of the lever wing 13 is attached to the chuck 124, and the lever wing 13 is prevented from overturning in the direction of the chuck 124 by the rotation bolt and the chuck 124.

The shaft casing 21 is connected with an anchor plate 22.

The diameter of the central hole 221 is smaller than the diameter of the ring formed when the lever wing 13 is in the raised state.

The head cover 23 is detachably connected to the anchor plate 22, the head cover 23 includes a large cover 232 and a small cover 231, the small cover 231 can just receive the part of the club head 12 when the wing 13 is retracted, when the club body 1 is pushed inward, the small cover 231 presses the wing 13 to the middle shaft 121, the wing 13 is attracted by the magnet 123 to be in the retracted state, and the club body 1 can be pulled out from the anchor cylinder 2 to be retracted manually.

Wherein, peripheral rock-soil body and anchor body 3 interact, provides frictional resistance for anchor body 3. The anchor 3 in turn interacts with the anchoring cylinder 2 to provide a counter force to the anchoring cylinder 2. The anchor cylinder 2 is supported and caught by the blade 13 of the anchor plate 22, and transmits the acting force to the head 12 and the shaft 11 in this order. The rod body 11 transmits acting force to the anchor backing plate 5 and the anchor seat 6 in sequence through the anchor 4 locked with the rod body, so that a supporting effect is provided for a construction part.

Except the magnet block 123, the rod body 1 and other parts of the anchoring cylinder 2 are made of steel.

The anchoring body 3, the anchorage device 4, the anchor backing plate 5 and the anchor seat 6 are designed and constructed according to the relevant standard requirements.

In summary, the present invention discloses a method for using a manual push-pull semi-recycling anchor rod, which can make the rod wing 13 of the rod body 1 in two states of supporting and retracting respectively through the magnet 123, the rod head protective cover 23 and the manual push-pull: in the supporting state, the rod wings 13 are clamped on the anchor plate 22, so that the force on the rod body 1 can be transmitted to the anchor plate 22 through the rod wings 13 and further transmitted to the rock-soil body through the anchor bodies 3 on the periphery of the anchor plate 22; in the retracted state, the rod head 12 can pass through the central hole 221 of the anchor plate 22, and the rod body 1 and the anchor cylinder 2 can be assembled or the rod body 1 can be retracted, so that the anchor rod can be assembled or retracted without mechanical equipment, and the anchor rod is time-saving, labor-saving, convenient and efficient.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The use method of the manpower push-pull semi-recovery anchor rod is characterized by comprising the following steps: the rod body comprises a rod body, an anchoring cylinder, an anchoring body, an anchorage device, an anchor backing plate and an anchor seat, wherein the rod body comprises a rod body, a rod head and a rod wing, the anchoring cylinder comprises a rod body protecting cylinder, an anchoring plate and a rod head protecting cover, the rod head comprises a middle rod, an angle rod, a magnet block, a clamping head and a rod wing rotating bolt, a center hole is drilled in the center of the anchoring plate, and the center hole is used for the rod head and the rod body to penetrate when the rod wing is in a retraction state;

the method specifically comprises the following steps:

s5, recovering the rod body: when the temporary supporting engineering is finished and the anchor rod is recovered, the anchor device and the anchor seat are firstly detached, then the rod body is pushed inwards by manpower, so that the rod wing is in a recovery state after being extruded through the small protective cover of the rod head protective cover, and finally the rod body can be recovered by manually pulling the rod body.

2. The method for using a manual push-pull semi-recovery anchor rod as claimed in claim 1, wherein a rod wing rotation bolt hole is drilled on the rod wing, and the rod head is connected with the rod wing through the rod wing rotation bolt inserted in the rod wing rotation bolt hole.

3. The use method of a manual push-pull semi-recovery anchor rod as claimed in claim 2, wherein the cross section of the middle rod is a regular quadrangle, the central axis of the middle rod is coincident with the central axis of the rod body, and the two ends of the middle rod are respectively connected with the rod body and the clamping head.

4. The method as claimed in claim 3, wherein the angle bars are symmetrically distributed on four sides of the middle bar and are connected to the bar body and the chuck at two ends, respectively, the magnet block is wrapped at the center of the middle bar, and two ends of the wing rotation bolt are connected to two adjacent angle bars, respectively.

5. The method for using a manual push-pull semi-recovery anchor rod as claimed in claim 4, wherein the rod wing rotates around the rod wing rotating bolt and keeps two states of retraction and support: in the retracting state, the rod wings are attracted by the magnet blocks and attached to the middle rod, and the rod wings are completely positioned in the grooves formed by the two adjacent angle rods; when the support is in a supporting state, the long edge direction of the rod wing is perpendicular to the axis direction of the middle rod, and a part of the outer surface of the rod wing is attached to the clamping head.

6. The method of using a manually pushed and pulled semi-recycled anchor rod as claimed in claim 5, wherein said rod body casing is connected to said anchor plate.

7. The use method of a manual push-pull semi-recovery anchor rod as claimed in claim 6, wherein the diameter of the central hole is smaller than the diameter of a ring formed when the rod wings are in the supporting state.

8. The method of using a manual push-pull semi-recovery anchor rod as claimed in claim 7, wherein said rod head shield is detachably connected to said anchor plate, said rod head shield comprises a large shield and a small shield, said small shield is just able to receive said rod head portion when said rod wing is in a retracted state, when said rod body is pushed inward, said small shield presses said rod wing against said middle rod, said rod wing is attracted by said magnet block, and thereby is in a retracted state.

9. The use method of a human-powered push-pull semi-recovery anchor rod as claimed in any one of claims 1 to 8, wherein except for the magnet blocks, the rod body and other parts of the anchor cylinder are made of steel.

10. The method for using a human-powered push-pull semi-recycling anchor rod as claimed in claim 9, wherein the anchoring body, the anchorage device, the anchor backing plate and the anchor seat are designed and constructed according to relevant specification requirements.