CN112695753B - Enlarged footing anchor rod structure and construction process thereof - Google Patents

Abstract

The application relates to the field of anchoring technology, in particular to an enlarged footing anchor rod structure and a construction process thereof. In this application, open the barb through opening thorn device, make the barb insert in the anchor eye lateral wall, increased the compactness of being connected between the body of rod and the anchor eye lateral wall, improved the anchor power between the body of rod and the anchor eye lateral wall, reached the effect that has increased stock structure resistance to plucking bearing capacity.

Description

Enlarged footing anchor rod structure and construction process thereof

Technical Field

The application relates to the field of anchoring technology, in particular to an enlarged footing anchor rod structure and a construction process thereof.

Background

At present, in the rock-soil anchoring technology of foundation pit, slope support and the like, an anchor rod structure is commonly used, an anchor rod is used as a tension member penetrating into a stratum, one end of the anchor rod is connected with an engineering structure, and the other end of the anchor rod penetrates into the stratum.

The stock structure generally adopts one or more reinforcing bars to bind, drills in required reinforcement position, then downthehole with stock one end insert, then carries out the slip casting downthehole, waits for the thick liquids to solidify, and the stock structure installation is accomplished.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the anchoring force of the anchor rod structure and the hole wall is insufficient, so that the uplift resistance bearing capacity of the anchor rod structure is reduced.

Disclosure of Invention

In order to increase the uplift bearing capacity of the anchor rod structure, the application provides an enlarged head anchor rod structure and a construction process thereof.

First aspect, the application provides an enlarged footing stock structure adopts following technical scheme:

the utility model provides an enlarged footing stock structure and construction process thereof, is including inserting the body of rod and the conical head in the stock hole, conical head and body of rod fixed connection, be provided with the barb in the conical head, be provided with between barb and the conical head and be used for making the barb insert the device of stinging of stock hole lateral wall.

Through adopting above-mentioned technical scheme, after drilling out the anchor eye in the soil layer, remove the body of rod and insert the anchor eye, the body of rod drives the conical head and inserts the anchor eye diapire, the setting of conical head has reduced the resistance that the body of rod receives when inserting the anchor eye, then opens the barb through opening thorn device, make the barb insert in the anchor eye lateral wall, increased the compactness of being connected between the body of rod and the anchor eye lateral wall, improved the anchor power between the body of rod and the anchor eye lateral wall, reached the effect that has increased stock structure resistance to plucking bearing capacity.

Preferably, it includes stand pipe and push rod to open the thorn device, and stand pipe one end is articulated with the body of rod lateral wall, and the other end and push rod one end sliding connection, and it is internal that the stand pipe one end is kept away from to the push rod, and push rod and body of rod sliding connection, barb one end are located the stand pipe, are provided with the drive assembly who is used for driving barb and push rod motion between barb and the push rod and the body of rod.

Through adopting above-mentioned technical scheme, when opening the barb, utilize drive assembly drive push rod to slide, the push rod promotes the stand pipe and expandes, then drive assembly promotes the barb and slides along the stand pipe, and in the barb inserted the anchor eye lateral wall, the stand pipe played the guide effect to the barb, made the barb aim at the anchor eye lateral wall and inserted, improved the validity that the barb inserted the anchor eye lateral wall, the stand pipe was spacing to the barb simultaneously, reduces the probability that inserts the in-process barb landing body of rod of anchor hole at the removal body of rod.

Preferably, the driving assembly comprises a sliding block and a first inhaul cable, the sliding block is located in the rod body and is in sliding connection with the rod body, one end of the first inhaul cable is fixedly connected with the sliding block, and the other end of the first inhaul cable penetrates out of the rod body.

Through adopting above-mentioned technical scheme, exert pulling force to first cable, first cable drives the slider and slides along the body of rod, and the body of rod is kept away from to the slider promotion push rod and barb, has realized the expansion of barb and has pricked into, has improved the convenience that the drive barb expanded.

Preferably, a limiting groove is formed in the rod body, one end of the sliding block is inserted into the limiting groove, and the sliding block is connected with the limiting groove in a sliding mode.

Through adopting above-mentioned technical scheme, exert pulling force to first cable, first cable drives the slider and slides along the body of rod, and the slider slides along the spacing groove simultaneously, and the spacing groove plays limiting displacement to the slider, and when the slider was pulled the spacing groove and kept away from the lateral wall of conical head, the slider stopped sliding, and warning staff stops to stimulate first cable this moment, reminds the staff barb to have expanded simultaneously, has reduced labour's waste.

Preferably, one side of the sliding block, which is close to the push rod, is set to be an inclined plane, one side of the push rod, which is close to the sliding block, is set to be an inclined plane, and the two inclined planes are attached and slidably connected.

Through adopting above-mentioned technical scheme, when the slider removed, the inclined plane of slider and the laminating of the inclined plane of push rod continued to remove the slider, and the body of rod was kept away from to the slider promotion push rod, and the setting on inclined plane has realized the slider to the promotion of push rod, has improved the convenience that promotes the push rod.

Preferably, be provided with the reinforcement assembly in the body of rod, the reinforcement assembly includes the awl board and changes the board, and the awl board all is located the body of rod with changeing the board, and awl board and body of rod sliding connection, the awl board are close to commentaries on classics board one side and set up to the inclined plane, change the board and rotate with the body of rod and be connected, change the board and be close to awl board one side and set up to the inclined plane, two inclined plane laminating and sliding connection.

Through adopting above-mentioned technical scheme, when using the reinforcement subassembly, rotate and change the board, change and make the cone plate keep away from the body of rod through the transmission on two inclined planes, in the cone plate is being promoted to prick into the anchor eye lateral wall, realized strengthening once more between the body of rod and the anchor eye, further increased the resistance to plucking bearing capacity of the body of rod.

Preferably, be provided with the axis of rotation between commentaries on classics board and the body of rod, axis of rotation and commentaries on classics board fixed connection, axis of rotation both ends and body of rod fixed connection, axis of rotation outside cover is equipped with the second cable, and the winding of second cable one end is in the axis of rotation outside, and the body of rod is worn out to the other end.

Through adopting above-mentioned technical scheme, exert the pulling force to the second cable, the second cable drives the axis of rotation and rotates, and the axis of rotation drives the commentaries on classics board and rotates, changes the board and promotes in the taper plate inserts the anchor eye lateral wall, and the rotation to the axis of rotation has been realized to the setting of second cable, has improved the convenience of rotating the commentaries on classics board.

Preferably, a grouting channel for pouring cement paste is formed in the rod body, and two ends of the grouting channel are communicated with two ends of the rod body respectively.

By adopting the technical scheme, after the rod body is found out as the anchor hole, the grouting channel is used for grouting into the anchor hole, the cement paste is filled in the gap between the rod body and the hole wall, the standing is carried out to solidify the cement paste, the cement paste increases the stability of connection between the rod body and the inner wall of the anchor hole, meanwhile, the air bubbles inside the solidified cement paste are reduced, and the quality of the solidified cement paste is improved.

In a second aspect, the application provides a construction process of an enlarged footing anchor rod structure, which adopts the following technical scheme:

a construction process of an enlarged footing anchor rod structure comprises the following steps: the method comprises the following steps:

s1, positioning the anchor hole, namely measuring the position of the anchor hole and confirming the diameter and the length of the anchor hole;

s2, drilling anchor holes: drilling the soil layer at the positioned anchor hole position by using the drilling mechanical equipment until the drilling mechanical equipment drills to the preset anchor hole depth, stopping drilling, and moving the drilling mechanical equipment to withdraw from the anchor hole;

s3, cleaning holes: clearing soil scraps in the anchor holes and soil layer seepage water accumulated in the anchor holes;

s4, inserting the anchor rod: moving the rod body to insert into the anchor hole until the rod body drives the conical head to insert into the bottom wall of the anchor hole;

s5, opening barbs and conical plates: firstly, applying a pulling force to a first pull cable, driving a sliding block to move by the first pull cable, pushing one end of a guide pipe out and unfolding by the sliding block through a push rod, then continuously pushing an agnail along the guide rod to be away from a rod body by the sliding block, inserting the agnail into the side wall of an anchor hole, simultaneously applying a pulling force to a second pull cable, driving a rotating shaft to rotate by the second pull cable, pushing out a conical plate by the rotating shaft through the transmission of a rotating plate, and inserting the conical plate into the side wall of the anchor hole;

s6, grouting: pouring cement paste in the grouting channel to fill the whole anchor hole with the cement paste, and forming the anchor rod pile after the cement paste is solidified;

s7, tension test: and (4) detecting the tensioning prestress of the anchor pile according to the specification.

By adopting the technical scheme, firstly, technicians can specify the position of the anchor hole according to requirements, and then the size of the anchor hole is determined according to the length and the diameter of the required rod body, so that the accuracy of the anchor hole is improved, a series of operations which are subsequently adopted after inaccurate are saved, and the drilling efficiency is improved; utilize the drilling machine to drill the soil layer afterwards, drill out the anchor eye, then clear up other debris in the anchor eye, guarantee the clean and tidy degree in the anchor eye, reduce the influence of debris to the installation of the body of rod, then begin to lay the body of rod, make the body of rod insert in the anchor eye, then open the barb through opening the thorn device, open the taper plate simultaneously, barb and taper plate all insert in the anchor eye lateral wall, the rigidity of the body of rod in the anchor eye has been realized, the resistance between the body of rod and the anchor eye lateral wall has been increased simultaneously, then pour grout in the slip casting passageway, it solidifies to stew to make grout, form the stock pile, at last, carry out stretch-draw inspection to the stock pile, the stock pile passes through stretch-draw inspection rear and can use, security and validity when guaranteeing the stock pile to use.

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

1. through the arrangement of the barb and the barb opening structure, the barb is opened by utilizing the barb opening device, so that the barb is inserted into the side wall of the anchor hole, the tightness of the connection between the rod body and the side wall of the anchor hole is increased, the anchoring force between the rod body and the side wall of the anchor hole is improved, and the effect of increasing the anti-pulling bearing capacity of the anchor rod structure is achieved;

2. through the arrangement of the sliding block and the first inhaul cable, the expansion and the pricking of the barb are realized, and the convenience of driving the expansion of the barb is improved;

3. through the setting of slip casting passageway, increased the stability of being connected between the body of rod and the anchor eye inner wall, reduced the inside air pocket of grout solidification back simultaneously, improved the quality after the grout solidification.

Drawings

FIG. 1 is a schematic illustration of the present application inserted into an earthen formation;

FIG. 2 is a schematic view of the anchor eye location;

FIG. 3 is a schematic cross-sectional view of the present application;

FIG. 4 is a cross-sectional view of a rod body;

FIG. 5 is a schematic view of the barb open;

FIG. 6 is a schematic structural view of the guide tube;

fig. 7 is a schematic structural view of a reinforcing assembly.

Description of reference numerals: 1. a soil layer; 11. an anchor eye; 2. a rod body; 21. a conical head; 211. a barb; 3. a thorn opening device; 31. a guide tube; 311. a chute; 32. a push rod; 33. a drive assembly; 331. a first cable; 332. a slider; 3321. a cylindrical block; 3322. a conical block; 3323. a flow-through hole; 3324. a limiting block; 34. a moving block; 4. grouting a channel; 41. a limiting groove; 42. a rhizosphere hole; 43. a first groove; 44. a second groove; 45. a third groove; 5. a reinforcement assembly; 51. rotating the plate; 511. a central bore; 512. a rotating shaft; 52. a conical plate; 53. a second cable.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses enlarged footing stock structure. Referring to fig. 1 and 2, an enlarged footing stock structure is including the body of rod 2 that is located anchor eye 11, the vertical setting of the body of rod 2, referring to fig. 3, 2 bottom ends of the body of rod are conical head 21, the vertical setting of conical head 21 is provided with barb 211 in the conical head 21, is provided with thorn device 3 between barb 211 and the conical head 21, and body of rod 2 is provided with in addition and consolidates subassembly 5. Remove the body of rod 2 and be close to and insert anchor eye 11, the body of rod 2 drives awl head 21 and inserts 11 diapalls of anchor eye, then expands barb 211 through opening the device once, and barb 211 inserts in 11 lateral walls of anchor eye, then utilizes and consolidates 5 and consolidate being connected between the body of rod 2 and 11 lateral walls of anchor eye, later in 11 interior slip casting of anchor eye, form the stock pile.

Referring to fig. 1 and 2, anchor holes 11 are formed in the surface of a soil layer 1, the anchor holes 11 are vertically arranged, and the anchor holes 11 are drilled in advance by drilling. The rod body 2 is fixed at a required position through the anchor hole 11, so that the rod body 2 is deep into the soil layer 1, and the connection between the rod body 2 and the soil layer 1 is reinforced.

Referring to fig. 2 and 3, the bottom end of the conical head 21 is conical, and the top end of the conical head 21 has the same diameter as the circumferential surface of the rod body 2. Insert in the anchor eye 11 diapire with conical head 21 bottom, realized the fixed to conical head 21 position, strengthened the body of rod 2 and the anchor eye 11 between be connected.

Referring to fig. 2 and 3, slip casting passageway 4 has been seted up at 2 top centers of the body of rod, the vertical setting of slip casting passageway 4, 2 tops of the body of rod are run through on the 4 top of slip casting passageway, 4 bottoms of slip casting passageway are close to conical head 21, be provided with root system hole 42 between slip casting passageway 4 and the conical head 21 lateral wall, root system hole 42 is provided with two, two root system holes 42 set up along the axis symmetry of conical head 21, root system hole 42 slope sets up, conical head 21 lateral wall is run through on root system hole 42 top, root system hole 42 top and slip casting passageway 4 bottom intercommunication.

Grout is injected into anchor hole 11 through slip casting passageway 4, grout flows along slip casting passageway 4, then grout reaches the stock diapire through root system hole 42, grout slowly pours into the gap between the body of rod 2 and anchor hole 11 into, the liquid level of grout risees gradually in the gap, air extrusion anchor hole 11 in grout will the gap, grout flows into in barb 211 inserts the gap between the anchor hole 11 simultaneously, until grout is full of whole anchor hole 11, then the grout that stews solidifies, form the stock pile, the anchor effect between the body of rod 2 and soil layer 1 has been improved.

Referring to fig. 3 and 4, a first groove 43, a second groove 44 and a third groove 45 are sequentially formed in the inner side wall of the grouting channel 4 along the direction far away from the top end of the rod body 2, the first groove 43 is horizontally arranged, two first grooves 43 are arranged, the two first grooves 43 are symmetrical along the central axis of the rod body 2, and the ends, far away from each other, of the two first grooves 43 penetrate through the outer side wall of the rod body 2; the second grooves 44 are obliquely arranged, four second grooves 44 are arranged, the bottom ends of the second grooves 44 are far away from the grouting channel 4, and the bottom ends of the second grooves 44 penetrate through the outer side wall of the rod body 2; third groove 45 level sets up, and third groove 45 is provided with four, and third groove 45 and second groove 44 are located same vertical plane, and the body of rod 2 lateral wall is run through to the one side that four third grooves 45 kept away from each other.

Referring to fig. 2 and 3, the number of the barbs 211 is four, the barbs 211 are positioned in the second grooves 44, one end of the barbs 211, which is far away from the grouting channel 4, is provided with a tip, and the barbs 211 are slidably connected with the second grooves 44. The barb 211 slides, makes barb 211 keep away from slip casting passageway 4 and inserts in 11 lateral walls of anchor eye, forms the enlarged footing, and then has increased the compactness of being connected between the body of rod 2 and 11 lateral walls of anchor eye, has improved the anchor power between the body of rod 2 and 11 lateral walls of anchor eye, has reached the effect that has increased stock structure resistance to plucking bearing capacity.

Referring to fig. 4 and 5, the pricking device 3 comprises a guide pipe 31, a push rod 32 and a moving block 34, the guide pipe 31 is vertically arranged, the side wall of the top end of the guide pipe 31 is hinged to the side wall of the rod body 2, the push rod 32 is located in a third groove 45, the push rod 32 is connected with the third groove 45 in a sliding mode, the moving block 34 is located between the push rod 32 and the guide pipe 31, one end, far away from the grouting channel 4, of the push rod 32 is hinged to the moving block 34, the moving block 34 is connected with the guide pipe in a sliding mode, and a driving assembly 33 is arranged between the push rod 32 and the grouting channel 4. Utilize drive assembly 33 drive push rod 32 to keep away from slip casting passageway 4, push rod 32 promotes movable block 34 and slides along stand pipe 31, and movable block 34 drives the stand pipe 31 bottom and keeps away from the body of rod 2, and stand pipe 31 opens.

Referring to fig. 4 and 5, the guide pipe 31 is a structure with openings at the top end and the bottom end, the guide pipe 31 is located on one side of the second groove 44 away from the top end of the rod body 2, the inclined angle of the guide pipe 31 is the same as that of the second groove 44 in the open state, referring to fig. 6, the sliding groove 311 is formed in one side, close to the moving block 34, of the guide pipe 31, the sliding groove 311 is vertically arranged, the bottom end of the sliding groove 311 penetrates through the bottom end of the guide pipe 31, the sliding groove 311 is matched with the moving block 34 for use, the moving block 34 is vertically arranged, the longitudinal section of the moving block 34 is of a T shape, one end, away from the push rod 32, of the moving block 34 is inserted into the sliding groove 311, and the moving block 34 is slidably connected with the sliding groove 311. The push rod 32 pushes the connecting block to be away from the rod body 2, the connecting block slides along the sliding groove 311, the connecting block pushes the bottom end of the guide pipe 31 to be away from the rod body 2, and the guide pipe 31 guides the moving direction of the barb 211.

Referring to fig. 4 and 5, the push rod 32 is horizontally disposed, and one end of the push rod 32, which is far away from the connecting block, is disposed as an inclined surface, and the inclined surface is disposed toward the bottom end of the rod body 2. Pushing the push rod 32, the push rod 32 slides along the third groove 45, and the push rod 32 pushes the connecting block away from the rod body 2.

Referring to fig. 5, the driving assembly 33 includes a sliding block 332 and a first cable 331, the sliding block 332 is vertically disposed, the sliding block 332 is located in the grouting channel 4, the sliding block 332 is slidably connected to the grouting channel 4, and one end of the first cable 331 is fixedly connected to the center of the top end of the sliding block 332.

Referring to fig. 3 and 5, the slider 332 includes a cylinder block 3321 and a cone block 3322, the cylinder block 3321 is located at the bottom end of the slider 332, the cylinder block 3321 is vertically arranged, the bottom end of the cylinder block 3321 abuts against the bottom wall of the grouting channel 4, the side wall of the cylinder block 3321 covers the root system hole 42, the cone block 3322 is located at the top end of the slider 332, the cone block 3322 is vertically arranged, the cross section of the cone block 3322 is a regular triangle, the bottom end of the cone block 3322 is fixedly connected with the top end of the cylinder block, and the inclined angle of the inclined side wall of the cone block 3322 is the same as that of the push rod 32.

The first cable 331 is pulled, the first cable 331 drives the sliding block 332 to slide along the grouting channel 4, the sliding block 332 is far away from the first root system, the sliding block 332 is close to the push rod 32 and pushes the push rod 32 to be far away from the grouting channel 4, and therefore the position of the push rod 32 is moved.

Referring to fig. 3, the slider 332 lateral wall is provided with stopper 3324, the vertical setting of stopper 3324, stopper 3324 lateral wall and cylinder piece 3321 lateral wall fixed connection, with stopper 3324 cooperation use have a spacing groove 41, the vertical setting in slip casting 4 inside walls in passageway of spacing groove 41, spacing groove 41 is located first groove 43 and keeps away from body of rod 2 top one side, spacing groove 41 and stopper 3324 sliding connection.

Exerting pulling force to first cable 331, first cable 331 drives slider 332 and slides along body of rod 2, and slider 332 drives stopper 3324 simultaneously and slides along spacing groove 41, and when slider 332 was pulled spacing groove 41 and kept away from the lateral wall of conical head 21, slider 332 stopped sliding, and the warning staff stops to stimulate first cable 331 this moment, reminds staff's barb 211 to have expanded simultaneously.

Referring to fig. 2 and 5, the slider 332 is provided with two flow holes 3323 along the vertical direction, and both ends of the flow holes 3323 penetrate the slider 332. During grouting, cement slurry passes through the sliding block 332 through the flow hole 3323 and then flows into a gap between the rod body 2 and the anchor hole 11.

Referring to fig. 7, the reinforcing assembly 5 includes a rotating plate 51, a conical plate 52 and a second pulling cable 53, the rotating plate 51 is located in the grouting passage 4, the rotating plate 51 is rotatably connected with the grouting passage 4, the conical plate 52 is located in the first groove 43, and the conical plate 52 is slidably connected with the first groove 43.

Referring to fig. 2 and 7, the number of the conical plates 52 is two, the conical plates 52 are horizontally arranged, one end of the conical plate 52, which is far away from the grouting channel 4, is arranged to be a pointed end, the other end of the conical plate 52 is inserted into the grouting channel 4, one end of the conical plate 52, which is close to the grouting channel 4, is arranged to be an inclined plane, the inclined plane of one conical plate 52 faces the top end of the rod body 2, the inclined plane of the other conical plate 52 faces the top end of the rod body 2, and the inclination angles of the two inclined planes are the same. The conical plate 52 is pushed to enable the first groove 43 along which the conical plate 52 slides, the conical plate 52 is far away from the grouting channel 4, and the tip of the conical plate 52 is inserted into the side wall of the anchor hole 11, so that the connecting pipe between the side wall of the rod body 2 and the anchor hole 11 is reinforced.

Referring to fig. 7, the rotating plate 51 is horizontally arranged, a rotating shaft 512 is arranged between the rotating plate 51 and the grouting channel 4, the rotating shaft 512 is horizontally arranged, the rotating shaft 512 is perpendicular to the direction of the second groove 44, the rotating shaft 512 is located at the diameter position of the rotating plate 51, one end of the rotating shaft 512 is rotatably connected with the inner side wall of the grouting channel 4, and the other end of the rotating shaft 512 penetrates through the rotating plate 51 and is rotatably connected with the inner side wall of the grouting channel 4; inclined planes are arranged on two sides of the rotating plate 51 close to the two conical plates 52 and are arranged reversely, the inclined angles of the two inclined planes are the same as the inclined angle of the conical plate 52, and the two inclined planes are attached to the inclined planes of the conical plates 52.

Make axis of rotation 512 take place to rotate, axis of rotation 512 drives changes board 51 and rotates, changes board 51 and promotes two conical plate 52 and keep away from slip casting passageway 4, has realized the removal to conical plate 52 position, has improved the convenience that removes conical plate 52 position simultaneously.

Referring to fig. 2 and 7, a center hole 511 is vertically formed at the center of the rotating plate 51, and the rotating shaft 512 passes through the center hole 511. During grouting, cement slurry passes through the rotating plate 51 through the central hole 511 and then flows into a gap between the rod body 2 and the anchor hole 11.

Referring to fig. 3 and 7, one end of the second cable 53 is fixedly connected to one end of the first cable 331 away from the slider 332, and the other end thereof is wound around the outside of the rotating rod in the central hole 511 and then penetrates out of the top end of the rod body 2. Exerting a pulling force on the second cable 53, the second cable 53 drives the rotating shaft 512 to rotate, the rotating shaft 512 drives the rotating plate 51 to rotate, meanwhile, the second cable 53 drives the first cable 331 to move towards the top end of the rod body 2, and the first cable 331 drives the sliding block 332 to push out the barb 211.

The implementation principle of the enlarged footing stock structure of this application embodiment does: when the anchor rod structure is placed in the anchor hole 11, the movable rod body 2 is inserted into the anchor hole 11, the rod body 2 drives the conical head 21 to be inserted into the bottom wall of the anchor hole 11, then tension is applied to the second pull cable 53, the second pull cable 53 enables the conical plate 52 to be pushed out through the rotation of the rotating plate 51, the conical plate 52 is inserted into the side wall of the anchor hole 11, meanwhile, the second pull cable 53 drives the sliding block 332 to slide through the first pull cable 331, the sliding block 332 stretches the guide pipe 31, the barb 211 is pushed out along the guide pipe 31, the barb 211 is inserted into the side wall of the anchor hole 11, then cement slurry is injected through the grouting channel 4, the cement slurry penetrates through the rotating plate 51 and the sliding block 332 and then is injected into a gap between the rod body 2 and the anchor hole 11, the cement slurry is solidified in a standing mode, an anchor rod pile is formed, and the effect of increasing the anti-pulling bearing capacity of the anchor rod structure is achieved.

The embodiment of the application also discloses a construction process of the enlarged head anchor rod structure. A construction process of an enlarged head anchor rod structure comprises the following steps:

s1, positioning the anchor hole 11, namely firstly, leading technicians to position the position of the anchor hole 11 according to design requirements, confirming the diameter and the length of the required anchor hole 11, writing data on a striking mark, and inserting the mark at the positioned anchor hole 11;

s2, drilling anchor holes 11: firstly, a drilling person adjusts the drilling angle of a drill bit of the drilling machine, then the drilling machine is started, the drill bit of the drilling machine performs spiral drilling at the position of the positioned anchor hole 11 until the drill bit of the drilling machine reaches the preset depth of the anchor hole 11, drilling is stopped, the drill bit for drilling is moved to withdraw from the anchor hole 11, deviation of the drilling angle is noticed in the drilling process, if deviation occurs, adjustment is performed in time, and the drilling machine carries redundant soil out of the anchor hole 11 during drilling;

s3, cleaning holes: after the anchor hole 11 is drilled, inserting a sleeve into the anchor hole 11, then adding high-pressure water into the inner side of the sleeve, taking soil scraps in the anchor hole 11 out of the anchor hole 11 by the high-pressure water, then inserting a cotton rod into the anchor hole 11, absorbing water in the anchor hole 11, and finishing cleaning the anchor hole 11;

s4, inserting the anchor rod: the movable rod body 2 is inserted into the anchor hole 11, the rod body 2 drives the conical head 21 to be inserted into the bottom wall of the anchor hole 11, the side wall of the rod body 2 is abutted with the side wall of the anchor hole 11, and a small part of the top end of the anchor rod is exposed out of the anchor hole 11;

s5, opening barb 211 and conical plate 52: exerting tension on the second inhaul cable 53, enabling the conical plate 52 to be pushed out by the rotation of the rotating plate 51 of the second inhaul cable 53, enabling the conical plate 52 to be inserted into the side wall of the anchor hole 11, meanwhile, enabling the second inhaul cable 53 to drive the sliding block 332 to slide through the first inhaul cable 331, enabling the guiding pipe 31 to be unfolded through the sliding block 332, enabling the barb 211 to be pushed out along the guiding pipe 31, enabling the barb 211 to be inserted into the side wall of the anchor hole 11, and completing the primary reinforcement between the rod body 2 and the side wall of the anchor hole 11;

s6, grouting: pouring cement paste in the grouting channel 4, injecting the cement paste into a gap between the rod body 2 and the anchor hole 11 after the cement paste passes through the rotating plate 51 and the sliding block 332, filling the whole anchor hole 11 with the cement paste, standing, solidifying the cement paste to form an anchor rod pile, then performing secondary grouting on the anchor rod pile, and sealing the top end of the anchor hole 11;

s7, tension test: the anchor rod pile is subjected to tensioning prestress detection according to the specification, the anchor rod pile is put into use after being inspected, the anchor rod pile needs to be maintained uninterruptedly in the using process, and the service life of the anchor rod pile is prolonged.

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 (4)

1. The utility model provides an enlarged footing stock structure which characterized in that: the grouting device comprises a rod body (2) and a conical head (21) which are inserted into an anchor hole (11), wherein the conical head (21) is fixedly connected with the rod body (2), a grouting channel (4) for pouring cement slurry is formed in the rod body (2), two ends of the grouting channel (4) are respectively communicated with two ends of the rod body (2), a first groove (43), a second groove (44) and a third groove (45) are sequentially formed in the inner side wall of the grouting channel (4) along the direction away from the top end of the rod body (2), the first grooves (43) are horizontally arranged, the first grooves (43) are provided with two grooves, the two first grooves (43) are symmetrical along the central axis of the rod body (2), and one ends, away from each other, of the two first grooves (43) penetrate through the outer side wall of the rod body (2); the second grooves (44) are obliquely arranged, the number of the second grooves (44) is four, the bottom ends of the second grooves (44) are far away from the grouting channel (4), and the bottom ends of the second grooves (44) penetrate through the outer side wall of the rod body (2); the third grooves (45) are horizontally arranged, the number of the third grooves (45) is four, the third grooves (45) and the second grooves (44) are located on the same vertical plane, and one sides, far away from each other, of the four third grooves (45) penetrate through the outer side wall of the rod body (2); barbs (211) are arranged in the rod body (2), four barbs (211) are arranged, the barbs (211) are positioned in the second groove (44), one end, far away from the grouting channel (4), of each barb (211) is arranged to be a pointed end, the barbs (211) are in sliding connection with the second groove (44), and a barb opening device (3) used for enabling the barbs (211) to be inserted into the side wall of the anchor hole (11) is arranged between each barb (211) and the corresponding conical head (21); the barb opening device (3) comprises a guide pipe (31) and a push rod (32), one end of the guide pipe (31) is hinged with the side wall of the rod body (2), the other end of the guide pipe is connected with one end of the push rod (32) in a sliding manner, one end of the push rod (32), which is far away from the guide pipe (31), is inserted into the rod body (2), the push rod (32) is positioned in a third groove (45), the push rod (32) is connected with the third groove (45) in a sliding manner, one end of a barb (211) is positioned in the guide pipe (31), and a driving assembly (33) for driving the barb (211) and the push rod (32) to move is arranged between the barb (211) and the rod body (2); the driving component (33) comprises a sliding block (332) and a first inhaul cable (331), the sliding block (332) is located in the rod body (2), the sliding block (332) is connected with the rod body (2) in a sliding mode, one end of the first inhaul cable (331) is fixedly connected with the sliding block (332), and the other end of the first inhaul cable penetrates out of the rod body (2); the reinforcing component (5) is arranged in the rod body (2), the reinforcing component (5) comprises a conical plate (52) and a rotating plate (51), the conical plate (52) and the rotating plate (51) are both located in the rod body (2), the conical plate (52) is located in a first groove (43), the conical plate (52) is in sliding connection with the first groove (43), one side, close to the rotating plate (51), of the conical plate (52) is arranged to be an inclined plane, the rotating plate (51) is in rotating connection with the rod body (2), one side, close to the conical plate (52), of the rotating plate (51) is arranged to be an inclined plane, and the two inclined planes are attached and in sliding connection; it is provided with axis of rotation (512) to change between board (51) and the body of rod (2), axis of rotation (512) level sets up, axis of rotation (512) are located the diameter department of changeing board (51), axis of rotation (512) and commentaries on classics board (51) fixed connection, axis of rotation (512) one end is connected with slip casting passageway (4) inside wall rotation, the other end passes and changes board (51) back and is connected with slip casting passageway (4) inside wall rotation, axis of rotation (512) outside cover is equipped with second cable (53), second cable (53) one end winding is in axis of rotation (512) the outside, the body of rod (2) is worn out to the other end.

2. An enlarged head anchor structure according to claim 1, wherein: a limiting groove (41) is formed in the rod body (2), one end of the sliding block (332) is inserted into the limiting groove (41), and the sliding block (332) is connected with the limiting groove (41) in a sliding mode.

3. An enlarged head anchor structure according to claim 2, wherein: one side of the sliding block (332), which is close to the push rod (32), is provided with an inclined plane, one side of the push rod (32), which is close to the sliding block (332), is provided with an inclined plane, and the two inclined planes are attached and connected in a sliding manner.

4. The construction process of the enlarged footing bolt structure of any one of claims 1-3, wherein: the method comprises the following steps:

s1, positioning the anchor hole (11), namely measuring the position of the anchor hole (11) and confirming the diameter and the length of the anchor hole (11);

s2, drilling an anchor hole (11): drilling the soil layer (1) at the positioned anchor hole (11) by using the drilling mechanical equipment until the drilling mechanical equipment drills to the preset anchor hole (11) depth, stopping drilling, and then moving the drilling mechanical equipment to withdraw from the anchor hole (11);

s3, cleaning holes: clearing soil scraps in the anchor holes (11) and water seepage of the soil layer (1) gathered in the anchor holes (11);

s4, inserting the anchor rod: the movable rod body (2) is inserted into the anchor hole (11) until the rod body (2) drives the conical head (21) to be inserted into the bottom wall of the anchor hole (11);

s5, opening barbs (211) and conical plate (52): firstly, pulling force is applied to a first pull rope (331), the first pull rope (331) drives a sliding block (332) to move, the sliding block (332) pushes one end of a guide pipe (31) out and expands through a push rod (32), then the sliding block (332) continuously pushes a barb (211) to be far away from a rod body (2) along the guide pipe (31), the barb (211) is inserted into the side wall of an anchor hole (11), meanwhile, pulling force is applied to a second pull rope (53), the second pull rope (53) drives a rotating shaft (512) to rotate, the rotating shaft (512) pushes a conical plate (52) out through the transmission of a rotating plate (51), and the conical plate (52) is inserted into the side wall of the anchor hole (11);

s6, grouting: pouring cement paste in the grouting channel (4) to fill the whole anchor hole (11) with the cement paste, and forming the anchor rod pile after the cement paste is solidified;

s7, tension test: and (4) detecting the tensioning prestress of the anchor pile according to the specification.

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