CN218466548U

CN218466548U - Deep basal pit anchor bolt supporting construction

Info

Publication number: CN218466548U
Application number: CN202222756470.3U
Authority: CN
Inventors: 郑世杰; 林智勇; 苏尾仙; 陈兆堂
Original assignee: Fujian Shun'an Construction Engineering Co ltd
Current assignee: Fujian Shun'an Construction Engineering Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-10
Anticipated expiration: 2032-10-19

Abstract

The application relates to a deep basal pit anchor bolt supporting construction, it includes anchor head, stock body and hose, the first threaded connection of anchor in the one end of stock body, the hose cover is located all sides of stock body, all sides butt of stock body in the inner wall of hose. This application has and carries out the effect of retrieving it after the stock accomplishes temporary support function.

Description

Deep basal pit anchor bolt supporting construction

Technical Field

The application relates to the field of anchor rod technology for foundation pit supporting engineering, in particular to a deep foundation pit anchor rod supporting structure.

Background

The anchor bolt support has the advantages of high bearing capacity and high reliability, is widely applied to urban deep foundation pit reinforcement at present, and has obvious benefits in urban construction.

With the use of a large number of anchor rods, the number of anchor rods buried in the city ground is correspondingly increased. When the temporary support function is invalid, the traditional anchor rod cannot be recovered and is buried underground together with the built structure, a large amount of underground space is occupied, underground garbage is formed, and meanwhile, the anchor rod cannot be recovered, so that steel is wasted. In addition, can also reform transform the later stage in city, lead to very big puzzlement if subway construction, tunnel construction etc. lead to that the large-scale machinery (such as the shield constructs the machine) in subway, tunnel construction and the municipal works can't be under construction, can only rely on the manual work to excavate to greatly prolonged construction period, increased construction cost, cause very big waste. There is a need for a bolting configuration that can be retrieved after performing the function of temporary bracing.

SUMMERY OF THE UTILITY MODEL

In order to retrieve it after the stock accomplishes temporary support function, this application provides a deep basal pit anchor rod supporting construction.

The application provides a deep basal pit anchor rod supporting construction adopts following technical scheme:

the utility model provides a deep basal pit anchor bolt supporting construction, includes anchor head, stock body and hose, the first threaded connection of anchor in the one end of stock body, the hose cover is located the week side of stock body, week side butt of stock body in the inner wall of hose.

By adopting the technical scheme, when the anchor rod supporting structure is used, firstly, the anchor rod body is sleeved in the hose, and the anchoring head is fixed at one end of the anchor rod in a threaded manner; then inserting the installed anchor rod supporting structure into an anchor rod hole drilled on the foundation pit wall, and grouting between the hole wall of the anchor rod hole and the outer side wall of the hose; when dismantling the stock, rotate the stock body, make stock body and the separation of anchor head, then take the stock body out from the hose, make inside hose and the anchor head of only leaving of foundation ditch wall to the completion is to the recovery of stock body, reduces the harmful effects that the stock caused, practices thrift building material.

Optionally, a first external thread is formed on the peripheral side of the anchor rod body, an internal thread is formed on the inner wall of the hose, and the internal thread is used for matching with the first external thread; the first external screw thread with the internal thread all follows the length direction extension setting of stock body.

Through adopting above-mentioned technical scheme, when taking out the stock body from the hose, utilize first external screw thread and internal screw thread cooperation, screw out the stock body from the hose for it is more laborsaving to take out the process.

Optionally, the hose further comprises an elastic tube, the elastic tube is sleeved outside the hose, and the elastic tube and the hose have the same length; one end of the elastic tube close to the anchoring head is provided with a connecting sheet of an annular structure, the inner side wall of the connecting sheet is fixedly connected with the hose, and the outer side wall of the connecting sheet is fixedly connected with the elastic tube.

By adopting the technical scheme, after the anchor rod supporting structure is inserted into the anchor rod hole, grouting is carried out between the hose and the elastic pipe, and the pipe wall of the elastic pipe deforms along with the grouting, so that the outer wall of the elastic pipe is abutted against the hole wall of the anchor rod hole; because the inside wall and the outside wall of the connecting sheet are respectively and fixedly connected with the hose and the elastic tube, the slurry cannot permeate into the soil body, and the interaction between each anchor rod supporting structure and the soil body can be controlled through quantitative grouting.

Optionally, a connecting hole is formed in the surface of the connecting sheet in a penetrating manner, one surface of the anchoring head is used for the connecting sheet to abut against, and the anchoring head is used for covering the connecting hole.

By adopting the technical scheme, after grout is injected between the elastic pipe and the hose, the grout flows through the connecting hole to be contacted with the anchoring head, so that the anchoring head is fixedly connected with the connecting sheet; in the process of screwing out the stock body from the hose in a rotating manner, the anchor head is limited to rotate relative to the soil body, and the risk that the stock body cannot be separated from the anchor head due to the fact that the stock body is connected with the anchor head in an over-tight manner is reduced.

Optionally, the outer side wall of the elastic tube is provided with a plurality of protrusions, and the plurality of protrusions are uniformly distributed on the surface of the elastic tube.

By adopting the technical scheme, the roughness of the elastic pipe is increased, namely the friction factor between the elastic pipe and the hole wall of the anchor rod hole is increased, so that the anti-pulling capacity of the anchor rod supporting structure is improved.

Optionally, the protrusion is a block having a triangular pyramid structure.

By adopting the technical scheme, after the elastic pipe is injected between the elastic pipe and the hose to abut against the hole wall of the anchor rod hole, the protruding tip is inserted into the soil body, the connection strength of the anchor rod supporting structure and the soil body is increased, and the anti-pulling capacity of the anchor rod supporting structure is further increased.

Optionally, the anchor rod further comprises at least one extension rod and at least one limiting rod, wherein a limiting block is arranged at one end of the extension rod, a first limiting groove is formed in the end surface, far away from the anchoring head, of the anchor rod body, and the first limiting groove is used for being inserted by the limiting block; a second limiting groove is formed in one end, far away from the limiting block, of the extension rod, and the second limiting groove is used for the limiting block to be inserted and connected; the groove wall of the first limiting groove is provided with a first penetrating hole in a penetrating mode, the side wall of the limiting block is provided with a second penetrating hole in a penetrating mode, the groove wall of the second limiting groove is provided with a third limiting hole in a penetrating mode, and the first limiting hole, the second limiting hole and the third limiting hole are all used for allowing the limiting rod to be connected in an inserting mode.

By adopting the technical scheme, the matching of the first limiting groove, the limiting block, the first through hole, the second through hole and the limiting rod enables the plurality of extensions to be detachably connected; the cooperation of second spacing groove, stopper, second wear to establish hole, third wear to establish hole and gag lever post makes extension rod and stock body can dismantle and be connected. Therefore, the shorter anchor rod body can be manufactured, and the constructor selects the extension rods with the proper number according to the required length of the anchor rod supporting structure to prolong the anchor rod body, so that the extension rods and the anchor rod supporting structure are more convenient to transport, store and disassemble.

Optionally, the first limiting groove and the second limiting groove are both of a columnar structure with a polygonal cross section.

Through adopting above-mentioned technical scheme, when taking stock body or extension rod out from the hose, can insert corresponding polygon column instrument in first spacing groove or second spacing groove, then rotate polygon column instrument to unscrew stock body or extension rod from the hose.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the hose is sleeved outside the anchor rod body, and the anchor rod body and the slurry are isolated by the hose, so that the anchor rod body can be drawn out of a soil body after the anchor rod supporting structure completes the function of temporary supporting, and the adverse effect of the anchor rod buried underground is reduced;

2. by arranging the extension rod, the extension rod is detachably connected with the anchor rod body and the extension rod, so that the anchor rod supporting structure is more convenient to transport, store and detach;

3. the elastic pipe is sleeved outside the hose, and the connecting piece is used for connecting the end of the elastic pipe and the end of the hose, so that slurry cannot permeate into a soil body during grouting, and the size of interaction between the anchor rod supporting structure and the soil body can be controlled by controlling grouting amount.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Figure 2 is an exploded view of the bolt support structure shown.

Fig. 3 is a schematic view showing a structure of a connecting piece.

Fig. 4 is a schematic view for showing the first limiting groove.

FIG. 5 is a schematic view for illustrating a second limiting groove.

Description of reference numerals: 1. an anchoring head; 2. an anchor body; 21. a first limit groove; 22. a first through hole; 23. a first external thread; 3. an extension pole; 31. a limiting block; 32. a second limit groove; 33. a second through hole; 34. a third through hole; 35. a second external thread; 4. a limiting rod; 5. a hose; 51. an internal thread; 6. an elastic tube; 61. connecting sheets; 62. connecting holes; 63. and (4) protruding.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses deep basal pit anchor bolt supporting construction. Referring to fig. 1 and 2, a deep foundation pit anchor rod supporting structure includes anchor head 1, stock body 2, many extension rods 3, many gag lever posts 4, hose 5 and elastic tube 6, and anchor head 1 threaded connection is in the one end of stock body 2. Extension rod 3 can be dismantled and connect in stock body 2, and adjacent extension rod 3 can be dismantled and connect, and extension rod 3 is used for extension stock body 2. The elastic tube 6 is sleeved outside the hose 5 and is equal to the hose 5 in length, and the hose 5 is sleeved outside the anchor rod body 2.

Referring to fig. 1, an anchor head 1 is a conical block made of concrete, and the bottom surface of the anchor head 1 is used for abutting against the end of an anchor body 2. The hose 5 is made of degradable rubber material and the elastic tube 6 is made of geotextile.

Referring to fig. 2, the anchor rod body 2 is far away from the terminal surface of the anchor head 1 and is provided with a first limiting groove 21, the terminal surface of one end of the extension rod 3 is integrally formed with a limiting block 31, and the first limiting groove 21 is used for the insertion of the limiting block 31. The end face of one end of the extension rod 3, which is far away from the limiting block 31, is provided with a second limiting groove 32, and the second limiting groove 32 is used for the insertion of the limiting block 31. The groove wall of the first limiting groove 21, the side wall of the limiting block 31 and the groove wall of the second limiting groove 32 are respectively provided with a first penetrating hole 22, a second penetrating hole 33 and a third penetrating hole 34 in a penetrating manner, and the first penetrating hole 22, the second penetrating hole 33 and the third penetrating hole 34 are all used for inserting the limiting rod 4.

Referring to fig. 4 and 5, the first and second limiting

grooves

21 and 32 are each a regular pentagonal columnar structure.

Referring to fig. 2, a first external thread 23 is formed on the circumferential side of the anchor body 2, an internal thread 51 is formed on the inner wall of the hose 5, and the internal thread 51 is used for matching with the first external thread 23. The extension rod 3 has a second external thread 35 formed on the peripheral side thereof, and the second external thread 35 is adapted to be engaged with the internal thread 51. The first external thread 23, the internal thread 51 and the second external thread 35 are all arranged to extend along the length direction of the anchor body 2. When the extension rod 3 is connected with the anchor rod body 2, the thread lines of the first external thread 23 and the second external thread 35 are connected; when adjacent extension poles 3 are connected, the thread lines of adjacent second external threads 35 of adjacent extension poles 3 are connected.

Referring to fig. 2 and 3, a connecting piece 61 with a circular ring structure is integrally formed at one end of the elastic tube 6 close to the anchoring head 1, and the inner side wall of the connecting piece 61 is fixedly bonded with the side wall of the end of the hose 5 close to the anchoring head 1. A plurality of connection holes 62 are formed through the surface of the connection piece 61, and the connection holes 62 are uniformly distributed on the surface of the connection piece 61. By the design, when grouting is performed between the elastic pipe 6 and the hose 5, grout flows through the connecting hole 62 to contact with the anchoring head 1, and the grout is connected with the anchoring head 1 after being solidified, so that the anchoring head 1 is fixedly connected with the connecting sheet 61; in addition, under the combined action of the anchoring head 1, the connecting sheet 61, the elastic pipe 6 and the hose 5, slurry stays between the elastic pipe 6 and the hose 5, cannot permeate into soil and causes harmful influence on the soil, and meanwhile, the acting force between the anchor rod supporting structure and the soil can be controlled through quantitative grouting.

Referring to fig. 2, a plurality of protrusions 63 having a triangular pyramid structure are integrally formed on an outer sidewall of the elastic tube 6, and the plurality of protrusions 63 are uniformly distributed on the outer sidewall of the elastic tube 6. By means of the design, after grouting, the elastic pipe 6 expands, the side wall of the elastic pipe 6 abuts against the hole wall of the anchor rod hole, and the protrusion 63 is inserted into a soil body, so that the anti-pulling capacity of the anchor rod supporting structure is improved.

The implementation principle of the deep foundation pit anchor rod supporting structure in the embodiment of the application is as follows: when the anchor bolt supporting structure is assembled, firstly, a proper number of extension rods 3 are selected, the limiting blocks 31 of the extension rods 3 are inserted into the first limiting grooves 21 of the anchor bolt body 2, the first through holes 22 are aligned with the second through holes 33, the limiting rods 4 are inserted into the first through holes 22 and the second through holes 33, and the adjacent extension rods 3 are spliced in the same way; then the anchor rod body 2 and the extension rod 3 are screwed into the hose 5 until the end surface of the anchor rod body 2 is coplanar with the surface of the connecting piece 61, and finally the anchoring head 1 is screwed to the end part of the anchor rod body 2.

During construction, firstly, an anchor rod hole is drilled in the foundation pit wall, then the anchor rod supporting structure is inserted into the anchor rod hole, and finally grouting is performed between the elastic pipe 6 and the hose 5, so that the outer side wall of the elastic pipe 6 is abutted against the hole wall of the anchor rod hole.

After the construction is completed and the anchor bolt supporting structure completes the temporary supporting function, the extension rod 3 and the anchor bolt body 2 are screwed out of the hose 5 by using the polygonal columns corresponding to the first polygonal groove and the second polygonal groove. In the screwing-out process, all the anchor rod bodies 2 and all the extension rods 3 can be directly screwed out at one time, and the screwed-out extension rods 3 can be separated from the hose 5 still inside the hose 5 and then continuously screwed out.

When the anchor rod body 2 and all the extension rods 3 are completely screwed out, only the anchoring head 1 made of concrete, the elastic tube 6 made of geotextile and the hose 5 made of degradable materials are left in the soil body, so that the influence of the anchor rod supporting structure on the peripheral soil body can be effectively reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a deep basal pit anchor bolt supporting construction which characterized in that: including anchor head (1), stock body (2) and hose (5), anchor head (1) threaded connection in the one end of stock body (2), hose (5) cover is located the week side of stock body (2), week side butt of stock body (2) in the inner wall of hose (5).

2. A deep foundation pit bolting structure according to claim 1, wherein: a first external thread (23) is formed on the peripheral side of the anchor rod body (2), an internal thread (51) is formed on the inner wall of the hose (5), and the internal thread (51) is used for being matched with the first external thread (23); the first external thread (23) and the internal thread (51) are arranged in an extending mode along the length direction of the anchor rod body (2).

3. The anchor supporting structure for a deep foundation pit according to claim 2, wherein: the flexible pipe is characterized by further comprising an elastic pipe (6), wherein the elastic pipe (6) is sleeved outside the flexible pipe (5), and the length of the elastic pipe (6) is equal to that of the flexible pipe (5); one end of the elastic tube (6) close to the anchoring head (1) is provided with a connecting sheet (61) of an annular structure, the inner side wall of the connecting sheet (61) is fixedly connected with the hose (5), and the outer side wall of the connecting sheet (61) is fixedly connected with the elastic tube (6).

4. A deep foundation pit bolting structure according to claim 3, wherein: the surface of the connecting sheet (61) is provided with a connecting hole (62) in a penetrating mode, one surface of the anchoring head (1) is used for enabling the connecting sheet (61) to abut against, and the anchoring head (1) is used for covering the connecting hole (62).

5. A deep foundation pit bolting structure according to claim 4, wherein: the outer side wall of the elastic tube (6) is provided with a plurality of bulges (63), and the bulges (63) are uniformly distributed on the surface of the elastic tube (6).

6. A deep foundation pit bolting structure according to claim 5, wherein: the bulges (63) are blocks in triangular pyramid structures.

7. A deep foundation pit bolting structure according to any of claims 1 to 6, wherein: the anchor rod is characterized by further comprising at least one extension rod (3) and at least one limiting rod (4), a limiting block (31) is arranged at one end of the extension rod (3), a first limiting groove (21) is formed in the end face, far away from the anchoring head (1), of the anchor rod body (2), and the first limiting groove (21) is used for being spliced by the limiting block (31); a second limiting groove (32) is formed in one end, far away from the limiting block (31), of the extension rod (3), and the second limiting groove (32) is used for the limiting block (31) to be inserted; the groove wall of the first limiting groove (21) is penetrated and provided with a first penetrating hole (22), the side wall of the limiting block (31) is penetrated and provided with a second penetrating hole (33), the groove wall of the second limiting groove (32) is penetrated and provided with a third penetrating hole (34), and the first penetrating hole (22), the second penetrating hole (33) and the third penetrating hole (34) are all used for supplying the limiting rod (4) to be connected in an inserting mode.

8. A deep foundation pit bolting structure according to claim 7, wherein: the first limiting groove (21) and the second limiting groove (32) are both of a columnar structure with a polygonal cross section.