CN-121976528-A - Single-wedge grouting-free anchor cable and construction method thereof

CN121976528ACN 121976528 ACN121976528 ACN 121976528ACN-121976528-A

Abstract

The invention is used in the technical field of geotechnical engineering anchoring, and discloses a single-wedge grouting-free anchor cable which comprises a triangular wedge block and a soil body, wherein a guide cone is fixedly arranged at one end of the triangular wedge block, and a positioning connecting rod is arranged at one end of a connector positioned in the triangular wedge block in a threaded manner. This slip casting anchor rope is exempted from to singly wedge lets direction awl, triangle wedge and side's pipe be beaten into the preset degree of depth of side slope with suitable angle through being connected of pile driver and location connecting rod, later pulling steel strand wires drive U type ring, triangle wedge remove to support through the location connecting rod, the whole slight removal of device together simultaneously, the slope design of triangle wedge is being cooperated, let the triangle wedge can be in the middle of the side slope light deformation, form radial expansion, form mechanical self-anchoring through the pulling force deformation, and need not the slip casting, the pollution of environment and the cost and the complexity of construction have been reduced, promote the efficiency and the speed of establishing the stock by a wide margin.

Inventors

YE SHUAIHUA
XIN LIANGLIANG
Ju Haorui
YE WEINA

Assignees

兰州理工大学
兰州工业学院

Dates

Publication Date: 20260505
Application Date: 20260317

Claims (10)

1. The single-wedge grouting-free anchor cable comprises a triangular wedge block (1) and a side slope (22), wherein a guide cone (20) is fixedly arranged at one end of the triangular wedge block (1), a connector (2) is fixedly arranged between the guide cone (20) and the triangular wedge block (1), a positioning connecting rod (3) is arranged at one end of the connector (2) positioned inside the triangular wedge block (1) in a threaded manner, and the outer surface of the side slope (22) is penetrated by the triangular wedge block (1).
2. The single-wedge grouting-free anchor cable of claim 1, wherein one end of the positioning connecting rod (3) far away from the connector (2) is provided with another positioning connecting rod (3) in a threaded manner, and the positioning connecting rod (3), the connector (2) and the guide cone (20) are designed concentrically.
3. The single-wedge grouting-free anchor cable of claim 1, wherein a semicircular cavity (4) is formed in the center of the triangular wedge block (1), the semicircular cavity (4) wraps the connector (2), inserting clamping blocks (5) are fixedly installed in the semicircular cavity (4) respectively, an inserting clamping mechanism is arranged between the inserting clamping blocks (5) and the triangular wedge block (1), the inserting clamping mechanism comprises square tubes (6), a guide head (7) is fixedly arranged at one end, close to the triangular wedge block (1), of each square tube (6), the guide head (7) is of an inclined design, the connector (2), the U-shaped ring (18) and the steel strands (19) are located in the guide head (7) and the square tubes (6) respectively, and one end of each square tube (6) is clamped with the corresponding inserting clamping block (5).
4. The single-wedge grouting-free anchor cable of claim 3, wherein an inserting head (9) is inserted and installed at one end of the guide head (7), a second connecting rod (8) is fixedly arranged at one end of the inserting head (9), and a clasping guide mechanism is arranged between the second connecting rod (8) and the square tube (6).
5. The single-wedge grouting-free anchor cable of claim 4, wherein the enclasping guide mechanism comprises a flange plate (10), the flange plate (10) is respectively fixed on the outer surfaces of the square tube (6) and the second connecting rod (8), the outer surfaces of the flange plate (10) are respectively provided with a compression joint guide block (11), the compression joint guide blocks (11) are of an inclined design, the compression joint guide blocks (11) are of a semicircular design, the compression joint guide blocks (11) and the outer surfaces of the flange plate (10) are respectively penetrated by fastening bolts (12), and the fastening bolts (12) are in threaded connection with the compression joint guide blocks (11).
6. The single-wedge grouting-free anchor cable of claim 1, wherein a reverse mud guiding plate (13) is arranged between the triangular wedge block (1) and the semicircular cavity (4), the reverse mud guiding plate (13) is of an inclined design, the inclined direction of the reverse mud guiding plate (13) is opposite to that of the triangular wedge block (1), and a baffle plate (21) is fixedly arranged on the outer surface of one side of the reverse mud guiding plate (13).
7. The single-wedge grouting-free anchor cable of claim 6, wherein an isolation fixing mechanism is arranged between the blocking plate (21) and the reverse mud guiding plate (13), the isolation fixing mechanism comprises a filter screen plate (14), the filter screen plate (14) is fixedly installed in the semicircular cavity (4), the filter screen plate (14) is located between the reverse mud guiding plate (13) and the blocking plate (21), an insertion pipe (15) is fixedly installed on the outer surface of the filter screen plate (14), a flexible plastic drainage belt (16) is installed on the outer surface of the insertion pipe (15) in a clamping mode, and a hoop (17) is fixedly installed on the outer surface of the flexible plastic drainage belt (16).
8. The single-wedge grouting-free anchor cable of claim 1, wherein the side slope (22) is of an inclined design, an anchor net (25) is paved on an outer surface sheet of the side slope (22), the anchor net (25) is respectively penetrated by the positioning connecting rod (3), the flexible plastic drainage belt (16) and the steel strands (19), cross rods (26) are respectively arranged on the outer surfaces of the anchor net (25), the cross rods (26) are penetrated by the steel strands (19), cushion blocks (23) are penetrated on the outer surfaces of the steel strands (19), the outer surfaces of the cushion blocks (23) are attached to the outer surfaces of the cross rods (26), anchors (24) are fixedly installed on the outer surfaces of the steel strands (19), and the outer surfaces of the anchors (24) are attached to the outer surfaces of the cushion blocks (23).
9. The construction method of the single wedge grouting-free anchor cable according to any one of claims 1 to 8, wherein the application method comprises the following steps: S1, preassembling a positioning connecting rod (3) in a connector (2), inserting a square tube (6) into a clamping block (5) according to the driving depth, abutting a guide head (7) with the connector (2) and a guide cone (20), and connecting the whole device with a piling machine through the positioning connecting rod (3); S2, driving a pile driver after the step S1 is completed, and driving the triangular wedge block (1) to a predesigned depth in a side slope (22) obliquely upwards in a horizontal direction through the connection of the connector (2) and the positioning connecting rod (3); S3, after the step S2 is completed, the square tube (6) and the second connecting rod (8) can be pulled out, the square tube and the second connecting rod (8) are supported by the positioning connecting rod (3), then the steel stranded wires (19) are pulled, the connector (2) is pulled by the U-shaped ring (18), and the inclined design of the triangular wedge block (1) and the resistance during pulling are matched, so that the triangular wedge block (1) can deform and radially expand, and soil around the side slope (22) is extruded to form an anchoring section; s4, in the process of the operation S3, the reverse mud guiding plate (13) and the baffle plate (21) can block the mud extruded during the reverse movement of the triangular wedge block (1), so that the water permeated and generated in the tensioning process can penetrate through the filter screen plate (14) and pass through the insertion pipe (15), and the pore water of the side slope (22) is discharged outwards through the water permeability of the flexible plastic drainage belt (16); S5, after the step S4 is completed, the surface of the side slope (22) can be covered with an anchoring net (25), the cross bars (26) are pressed on the outer surface of the anchoring net (25) one by one, the cushion blocks (23) penetrate through the steel stranded wires (19), then the anchoring devices (24) are fixedly connected with the steel stranded wires (19), and the cross bars (26), the anchoring net (25) and the cushion blocks (23) can be fixed to complete the fixation of anchor ropes so as to continuously anchor and drain the side slope.
10. The construction method of the single-wedge grouting-free anchor cable of claim 9, wherein the guide head (7) in the S1 step forms extrusion force in the insertion slope (22), the support of the triangular wedge block (1) can be enhanced by being matched with the use of the insertion fixture block (5), the probability that the triangular wedge block (1) is possibly deformed and cannot be opened when being driven into the slope (22) is reduced, the angle of the triangular wedge block (1) in the S2 step when being driven into the slope (22) is 5 degrees, and the triangular wedge block (1) in the S3 step is made of a material (such as a high-strength thin steel plate) with certain rigidity but plastic deformation, and the overturning process is accompanied with local yield or structural locking, so that one-time and non-rebound expansion is realized.

Description

Single-wedge grouting-free anchor cable and construction method thereof Technical Field The invention relates to the technical field of geotechnical engineering anchoring, in particular to a single-wedge grouting-free anchor cable and a construction method thereof. Background In the field of geotechnical engineering and foundation treatment, the anchoring technology is widely applied to the scenes of slope support, foundation pit stabilization, tunnel reinforcement, quick rescue and relief and the like, structural load is effectively transferred to a deep stable stratum through anchor rods (or anchor ropes), so that the pulling resistance and stability of an overall system are improved, the traditional anchoring method mainly relies on a grouting process, cement-based slurry is injected into a drill hole, a rod body is wrapped and permeates surrounding soil, a cement-soil composite anchoring section with certain strength is formed after the slurry is solidified, however, the process has high material cost, cement, additives and grouting equipment are relatively large, the construction period is relatively long, the slurry needs to be fully solidified and hardened to apply prestress, the emergency or quick construction requirement is difficult to meet, hydraulic fracture or scouring disturbance is easily caused to the original soil in the grouting process again, especially in soft soil, sand layers or loose strata, the structural strength of the soil is possibly weakened, and in addition, the cement slurry production and waste slurry treatment also bring about environmental pollution and carbon emission problems, and do not accord with the development trend of green construction; Moreover, the existing anchoring device is generally lack of an integrated drainage function, so that drainage and anchoring are required to be constructed step by step, the process is complicated, the construction period is prolonged, the cost is superposed, and the drainage effect and the anchoring position are difficult to cooperatively optimize. Disclosure of Invention The invention aims to provide a single-wedge grouting-free anchor cable and a construction method thereof, which are used for solving the problem that grouting construction efficiency is low when the existing anchor rod is mostly required in the background technology. The single-wedge grouting-free anchor cable comprises a triangular wedge block and a side slope, wherein a guide cone is fixedly arranged at one end of the triangular wedge block, a connector is fixedly arranged between the guide cone and the triangular wedge block, a positioning connecting rod is arranged at one end of the connector, which is positioned in the triangular wedge block, in a threaded manner, the outer surface of the side slope is penetrated by the triangular wedge block, a U-shaped ring is rotatably arranged at one side, away from the triangular wedge block, of the connector, a steel strand is fixedly sleeved on the outer surface of the U-shaped ring in a pressing manner, the U-shaped ring and the connector are in an eccentric design, and the connector and the triangular wedge block are in an inclined design. Preferably, one end of the positioning connecting rod far away from the connector is provided with another positioning connecting rod in a threaded manner, and the connector and the guide cone are concentrically designed. By adopting the technical scheme, through the concentric design of the butt joint of the positioning connecting rod and the guide cone, the anchor rod can be driven into the required depth according to the construction requirement with proper force and orientation, and the positioning connecting rod can be butt-jointed and prolonged according to the requirement, so that the anchor rod can be driven into the required depth in the side slope better and easily. Preferably, the central point of triangle wedge is put and is provided with the semicircle chamber, and semicircle chamber parcel connector, the inside in semicircle chamber is fixed mounting respectively has the fixture block of inserting, be provided with grafting block mechanism between fixture block and the triangle wedge, grafting block mechanism includes the square pipe, the square pipe is close to the fixed guide head of having seted up of one end of triangle wedge, and the guide head is the slope design, connector, U type ring and steel strand wires are located the inside of guide head, square pipe respectively, the one end of square pipe with insert the fixture block looks block. By adopting the technical scheme, the square tube and the semicircular cavity can be better protected by the clamping of the square tube and the inserting clamping block through the use of the guide head, the connector, the U-shaped ring, the steel strand and the flexible plastic drainage belt can be simultaneously driven into a side slope to provide auxiliary thrust for the triangular wedge block, meanwhile, the triangular