CN212358328U

CN212358328U - Foundation pit support anchor rod

Info

Publication number: CN212358328U
Application number: CN202020769362.8U
Authority: CN
Inventors: 乔小明; 施文鑫
Original assignee: China MCC17 Group Co Ltd
Current assignee: China MCC17 Group Co Ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-01-15
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a foundation ditch support stock, including the stock body with set up the goniometer on the stock body, the goniometer is used for measuring the inclination of stock body when the stock body inserts the foundation ditch to make the contained angle between stock body and the foundation ditch domatic be in and set for the within range. The utility model discloses a foundation ditch support stock effectively solves steel pipe soil nail and squeezes into in-process injection hole jam and soil nail inclination construction deviation problem, helps improving soil nail inclination control accuracy, reduces the injection hole and blocks up the problem.

Description

Foundation pit support anchor rod

Technical Field

The utility model belongs to the technical field of the excavation supporting engineering construction, specifically speaking, the utility model relates to an excavation supporting stock.

Background

The soil nailing wall supporting technology is an advanced novel rock soil reinforcing technology, and steel pipe soil nails are suitable for loose or slightly dense sandy soil, silt soil and miscellaneous filling soil which are easy to collapse or soft soil which is easy to shrink. In order to ensure the integral sliding stability of the foundation pit, the inclination angle between the steel pipe soil nails and the slope surface of the foundation pit is designed to be 5-20 degrees according to the soil property and the construction condition of the foundation pit, and an anchoring end is formed on a slip surface through grouting to restrain the deformation of the foundation pit. The inclination angle allowable deviation of the soil nail is required to be 3 degrees according to the specification, however, in the engineering construction process, the inclination angle of the steel pipe soil nail is difficult to control, check and verify, and in the steel pipe soil nail driving process, a grouting hole is easily blocked by soil, so that the follow-up grouting construction is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a foundation ditch support stock, the purpose improves soil nail inclination control accuracy.

In order to realize the purpose, the utility model discloses the technical scheme who takes does: the foundation pit supporting anchor rod comprises an anchor rod body and an angle meter arranged on the anchor rod body, wherein the angle meter is used for measuring the inclination angle of the anchor rod body when the anchor rod body is inserted into a foundation pit, so that the included angle between the anchor rod body and the slope surface of the foundation pit is within a set range.

The angle meter comprises a pipe body arranged on the anchor rod body, an angle scale arranged on the pipe body, a line weight and a line rope connected with the angle scale and the line weight.

The stock body is including being arranged in inserting the pole body in the foundation ditch, set up on the pole body and can insert the barb in the foundation ditch and set up in the pole head of pole body one end, and the barb sets up a plurality ofly, sets up slip casting hole and slip casting hole on the pole body and sets up a plurality ofly.

The barb is in for the slope setting on the pole body, contained angle and this contained angle have between the length direction of barb and the length direction of pole body are the acute angle, and the perpendicular distance between the axis of the second end that the first end of barb and the axis of pole body is less than the perpendicular distance between the axis of the second end of barb and the pole body, the first end of barb with distance between the pole head is less than the distance between the second end of barb and the pole head.

The barb is L shape structure, and the barb is including first curb plate and the second curb plate that is connected, first curb plate and second curb plate with the pole body is connected.

The quantity of barb and the slip casting hole that sets up on the body of pole is the same, and each barb is located the same position department of pole body with a slip casting hole respectively.

The anchor rod body is hollow, and the anchor rod body further comprises a thread sleeve arranged inside the tail end of the rod body.

The foundation pit supporting anchor rod further comprises a disc buckle arranged on the anchor rod body, and the disc buckle comprises a coil pipe connected with the anchor rod body and a ring buckle connected with the coil pipe.

The utility model discloses a foundation ditch support stock effectively solves steel pipe soil nail and squeezes into in-process injection hole jam and soil nail inclination construction deviation problem, helps improving soil nail inclination control accuracy, reduces the injection hole and blocks up the problem.

Drawings

The description includes the following figures, the contents shown are respectively:

fig. 1 is a schematic longitudinal section of a foundation pit support anchor rod of the present invention;

fig. 2 is a schematic cross-sectional view of the anchor rod of the foundation pit support of the present invention;

fig. 3 is a working effect diagram of the foundation pit supporting anchor rod of the utility model;

labeled as: 100. an anchor body; 101. a shaft body; 102. a club head; 103. grouting holes; 104. sleeving the silk; 200. a barb; 201. a first side plate; 202. a second side plate; 300. coiling and buckling; 301. a coil pipe; 302. Looping; 400. a goniometer; 401. a tube body; 402. an angle scale; 403. a cord; 404. the line weighs down.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. In addition, in the embodiments described below, the terms "first" and "second" do not denote an absolute difference in structure and/or function, nor a sequential order of execution, but are merely used for convenience of description.

As shown in fig. 1 to 3, the utility model provides a foundation ditch support stock, including stock body 100 with set up the goniometer 400 on stock body 100, the goniometer 400 is used for measuring the inclination of stock body 100 when stock body 100 inserts the foundation ditch to make the contained angle between stock body 100 and the foundation ditch domatic be in the settlement within range.

Specifically, as shown in fig. 1 to 3, the anchor body 100 includes a shaft 101 for insertion into a foundation pit, a barb 200 provided on the shaft 101 and insertable into the foundation pit, and a head 102 provided at one end of the shaft 101, the barb 200 being provided in plurality, and a plurality of grouting holes 103 being provided in each of the shaft 101 and the head 102, the grouting holes 103 being provided in plurality. The goniometer 400 includes a tube 401 disposed on the anchor body 100, an angle scale 402 disposed on the tube 401, a line weight 404, and a line 403 connected to the angle scale 402 and the line weight 404. The club body 101 is a cylinder with a hollow interior, the club head 102 is fixedly connected with the head end of the club body 101, the club head 102 is a cone, the club head 102 has a large diameter end and a small diameter end, the club head 102 and the club body 101 are coaxially arranged, the large diameter end of the club head 102 is fixedly connected with the head end of the club body 101, the diameter of the large diameter end of the club head 102 is the same as the outer diameter of the club body 101, the diameter of the small diameter end of the club head 102 is zero, the large diameter end and the small diameter end of the club head 102 are axially opposite ends of the club head 102, the tube 401 is arranged at the tail end of the club body 101, and the head end and the tail end of the club body 101 are axially. The small diameter end of the rod head 102 forms a tip to facilitate insertion of the anchor body 100 into the earth of a foundation pit.

As shown in fig. 1 to 3, the goniometer 400 is detachably connected to the shaft 101, and after the measurement is completed, the goniometer 400 can be detached from the shaft 101. The tube body 401 is a conical structure with a slope surface, the tube body 401 is provided with a central hole for inserting the shaft 101, and when in use, the tube body 401 is sleeved on the shaft 101. An angle scale 402 is arranged at the conical end of the tube body 401, the upper end of a wire 403 is connected to the center of the angle scale 402, a short nail column is arranged at the center of the angle scale 402 and used for tying the wire 403, and the lower end of the wire 403 is connected with a wire weight 404. The angle scale 402 is a circular disc, the axis of the angle scale 402 is perpendicular to the axis of the shaft 101, a plurality of angle indication scale marks are arranged on the surface of the angle scale 402, each scale mark has a corresponding angle value, all the scale marks are uniformly distributed on the angle scale 402 along the circumferential direction, and the zero degree scale mark is below the vertical direction. When the anchor rod body 100 is installed, the anchor rod body 100 is inserted into a soil body of a foundation pit in an inclined state, the line weight 404 is put down to be suspended, the line weight 404 is located below the anchor rod body 100, the line rope 403 is in a vertical state, and the inclination angle of the anchor rod body 100 can be known according to the scale marks on the angle scale 402 corresponding to the line rope 403.

Therefore, the angle meter 400 with the structure has the advantages that the measurement is accurate and visual, the line weight 404 is suspended in the air in the working state, the line rope 403 is always kept in an absolute vertical state, the inclination angle of the anchor rod body 100 can be obtained according to the numerical value of the reading area corresponding to the line rope 403 on the angle scale 402, and the improvement of the control precision of the inclination angle of the soil nail is facilitated.

As shown in fig. 1 to 3, the plurality of grouting holes 103 are through holes penetrating through the sidewall of the shaft 101 in the wall thickness direction, and the grouting holes 103 are arranged in a quincunx pattern. In a specific construction process, cement paste is poured into the rod body 101, and then the cement paste is poured into the rod body 101 and then is injected into soil of a foundation pit around the anchor rod body 100 through the rod body 101 and the grouting holes 103 in the rod head 102 so as to fix the anchor rod body 100.

Preferably, the injection hole 103 of the shaft 101 is disposed within a length of the front end 2/3 of the shaft 101, and a length of the rear end 1/3 of the shaft 101 serves as a grout stop. 4 grouting holes 103 are also symmetrically arranged on the club head 102, and the hole diameters of the grouting holes 103 on the club body 101 and the club head 102 are preferably 5mm-8 mm.

As shown in fig. 1 to 3, the barb 200 is obliquely disposed on the shaft 101, an angle is formed between the length direction of the barb 200 and the length direction of the shaft 101 and is an acute angle, a perpendicular distance between a first end of the barb 200 and the axis of the shaft 101 is smaller than a perpendicular distance between a second end of the barb 200 and the axis of the shaft 101, the first end and the second end of the barb 200 are opposite ends in the length direction of the barb 200, a distance between the first end of the barb 200 and the head 102 is smaller than a distance between the second end of the barb 200 and the head 102, the barb 200 is extended toward the outside of the shaft 101 and can be embedded in a soil body around the shaft 101, barb 200 sets up and is used for protecting grouting hole 103 in the grouting hole 103 outside, and barb 200 is certain angle with pole body 101, and barb 200 is the positioner of stock simultaneously when adopting pore-forming slip casting technology, makes the stock body 100 fixed more firm.

As shown in fig. 1 to 3, it is preferable that the barb 200 has an L-shaped structure, the barb 200 may be made of angle steel, and the barb 200 is welded to the shaft 101. The barb 200 includes a first side plate 201 and a second side plate 202 connected, the first side plate 201 and the second side plate 202 being connected to the shaft 101. The first side plate 201 and the second side plate 202 are rectangular flat plates, the length directions of the first side plate 201 and the second side plate 202 are parallel, an included angle is formed between the length direction of the first side plate 201 and the length direction of the shaft 101 and is an acute angle, and the size of the included angle between the length direction of the first side plate 201 and the length direction of the shaft 101 is the same as the size of the included angle between the length direction of the second side plate 202 and the length direction of the shaft 101. The width direction of the first side plate 201 is perpendicular to the width direction of the second side plate 202, one side edge of the first side plate 201 in the width direction is fixedly connected with the outer circular surface of the rod body 101, one side edge of the second side plate 202 in the width direction is also fixedly connected with the outer circular surface of the rod body 101, the other side edge of the first side plate 201 in the width direction is fixedly connected with the other side edge of the second side plate 202 in the width direction, the other side edges of the first side plate 201 and the second side plate 202 are located outside the rod body 101, the other side edges of the first side plate 201 and the second side plate 202 form a corner of the barb 200, and the first end and the second end of the barb 200 are also opposite ends of the other side edge of the first side plate 201 and the second side plate 202 in the length.

As shown in fig. 1 to 3, the first side plate 201 and the second side plate 202 of the barb 200 are welded to the shaft 101. The number of the barbs 200 and the grouting holes 103 arranged on the shaft 101 is the same, and each barb 200 and one grouting hole 103 are respectively positioned at the same position of the shaft 101, and the barbs 200 extend towards the outer side of the grouting holes 103. The first side plate 201 is provided with a first contact surface attached to the outer circular surface of the rod body 101, the first contact surface is an arc surface, and the diameter of the first contact surface is the same as the outer diameter of the rod body 101, so that the first side plate 201 and the rod body 101 can be tightly connected. The second side plate 202 has a second contact surface which is in contact with the outer circular surface of the shaft 101, the second contact surface is an arc surface, and the diameter of the second contact surface is the same as the outer diameter of the shaft 101, so that the second side plate 202 and the shaft 101 can be tightly connected.

As shown in fig. 1 to 3, the anchor body 100 further includes a thread bushing 104 provided inside the rear end of the shaft 101, and the thread bushing 104 is used as a shaft 101 for extension.

As shown in fig. 1 to 3, the anchor rod for supporting a foundation pit of the present invention further includes a disc buckle 300 disposed on the anchor rod body 100, wherein the disc buckle 300 includes a coil pipe 301 connected to the anchor rod body 100 and a ring buckle 302 connected to the coil pipe 301. The coil pipe 301 is a circular tubular member, the coil pipe 301 is sleeved at the tail end of the rod body 101, and the inner diameter of the coil pipe 301 is slightly larger than the outer diameter of the rod body 101, so that the installation is convenient. The buckles 302 are of a hollow rectangular block structure, the buckles 302 are fixedly connected with the pipe body 401, the buckles 302 are four in number, the four buckles 302 are evenly distributed on the coil pipe 301 in the circumferential direction along the coil pipe 301, the length direction of the buckles 302 is perpendicular to the axis of the coil pipe 301, and the buckles 302 extend out towards the outer side of the coil pipe 301 in the radial direction of the coil pipe 301. The size of the central hole of the ring buckle 302 is slightly larger than the diameter of the steel bar to be installed, so that the steel bar can penetrate into the ring buckle 302 conveniently.

The construction method adopting the foundation pit supporting anchor rod comprises the following steps:

s1, manufacturing an anchor rod body 100;

s2, assembling the goniometer 400 and the anchor rod body 100;

s3, driving the anchor rod body 100 into construction;

s4, grouting;

and S5, assembling the disc buckle 300 and the anchor rod body 100.

In the step S1, the anchor body 100 is collectively processed and manufactured in a processing field, the shaft 101 and the head 102 are provided with the grouting holes 103, and one barb 200 is welded to the outside of each grouting hole 103 of the shaft 101.

In step S2, the goniometer 400 is attached to the rear end of the shaft 101 of the anchor body 100, and the wire 403 is connected to the center post of the angle scale 402.

In step S3, the anchor inclination angle is designed according to the excavation supporting, and the driving angle of the anchor is controlled by reading the degree on the angle scale 402. During construction, the anchor rod body 100 is inserted into a soil body of a foundation pit in an inclined state, the line weight 404 is put down to be suspended, the line weight 404 is located below the anchor rod body 100, the line rope 403 is in a vertical state, the inclined angle of the anchor rod body 100 can be accurately known according to the scale marks on the angle scale 402 corresponding to the line rope 403, and the included angle between the anchor rod body 100 and the slope surface of the foundation pit can be within a set range. And the barb 200 can prevent the grouting hole 103 on the shaft 101 from being blocked during the insertion of the anchor body 100 into the foundation pit soil.

In step S4, after the anchor body 100 is driven to the designed depth, the goniometer 400 is removed and grouting is performed.

In the step S5, the disc buckle 300 is assembled with the anchor body 100, the coil pipe 301 is installed at the rear of the rod body 101, the reinforcing mesh is covered on the slope of the foundation pit, and the reinforcing steel bars constituting the reinforcing mesh are inserted into the respective ring buckles 302 of the disc buckle 300.

The invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-described manner. Various insubstantial improvements are made by adopting the method conception and the technical proposal of the utility model; or without improvement, the above conception and technical solution of the present invention can be directly applied to other occasions, all within the protection scope of the present invention.

Claims

1. Excavation supporting stock, its characterized in that includes the stock body and sets up the goniometer on the stock body, and the goniometer is used for measuring the inclination of stock body when the stock body inserts the foundation ditch to make the contained angle between stock body and the foundation ditch domatic be in the settlement range.

2. The excavation support anchor of claim 1, wherein the goniometer includes a tube body disposed on the anchor body, an angle scale disposed on the tube body, a line weight, and a line cord connected to the angle scale and the line weight.

3. The anchor for foundation pit support of claim 1, wherein the anchor body comprises a plurality of barbs, a plurality of grouting holes and a plurality of grouting holes, wherein the barbs are arranged on the shank and can be inserted into the foundation pit, and the rod head is arranged at one end of the shank.

4. The anchor bolt of claim 3, wherein the barb is disposed to be inclined on the shank, an included angle is formed between the length direction of the barb and the length direction of the shank, the included angle is an acute angle, the perpendicular distance between the first end of the barb and the axis of the shank is smaller than the perpendicular distance between the second end of the barb and the axis of the shank, and the distance between the first end of the barb and the shank is smaller than the distance between the second end of the barb and the shank.

5. The anchor of claim 3, wherein the barb is of an L-shaped configuration and includes first and second side plates connected to one another, the first and second side plates being connected to the shank.

6. A foundation pit support anchor rod according to any one of claims 3 to 5, wherein the number of barbs and grouting holes provided on the rod body is the same, and each barb is located at the same position on the rod body as one grouting hole.

7. A foundation pit support anchor rod according to any one of claims 3 to 5, wherein the rod body is hollow and the anchor rod body further includes a thread sleeve disposed within the rear end of the rod body.

8. A foundation pit support anchor rod according to any one of claims 1 to 5, further comprising a disc fastener arranged on the anchor rod body, the disc fastener comprising a coiled tube connected to the anchor rod body and a ring fastener connected to the coiled tube.