CN106013189B - Slope retaining anchor system - Google Patents

Abstract

The invention discloses an anchor system for slope support, which comprises anchor piles and at least one grid beam arranged transversely along the slope, at least one anchor pile is arranged longitudinally along the grid beam; each anchor pile includes an anchor pipe, and is arranged in the anchor pipe. A built-in core rod that can move axially and at least one set of anti-retraction components that are arranged on the anchor tube and cooperate with the built-in core rod to stop the retreat; the axial movement of the built-in core rod pushes the top block to move radially along the anchor tube , the top block will push the free end of the anti-retraction rod to swing, so that the anti-retraction rod will expand to the outside of the anchor pipe, so that the anchor pile can be firmly fastened in the slope rock and soil as a whole, and the overall retreat of the anchor pile can be prevented; through The built-in core rod cooperates with the cone surface of the top block to push and push, which not only has a large contact area, but also has a good overall support effect after pushing, preventing the back-stop rod from moving inward after swinging out, and the built-in core rod can enhance the strength of the anchor pipe , so as to improve the overall bending and shearing capacity of the anchor pile and have better anchoring force.

Description

Anchor systems for slope support

technical field

The invention relates to the field of side slope support, in particular to an anchoring system for side slope support.

Background technique

When the slope formed in the engineering construction encounters rainy days or strong vibrations, geological disasters such as landslides, collapses, swelling or spalling often occur. The support mechanism, wherein, anti-slide piles or prestressed cables, or a combination of anti-slide piles and prestressed cables, are commonly used support structures. According to the geological composition, the slope can be divided into landslide body and sliding bed from outside to inside. The landslide body is also called the unstable area. Relatively, the sliding bed is called the stable area. Anti-slide piles or prestressed cables pass through The landslide body goes deep into the slide bed, which is used to support the sliding force of the landslide body and stabilize the slope.

In the prior art, although the support structure of anti-slide piles and prestressed beams has good bending and shearing resistance, it is inconvenient to install and the process is relatively complicated. The anchoring needs to be fixed by concrete, which not only costs a lot, but also requires labor intensity. High, and the adaptive effect after installation is not good, especially the expansion effect on the slope is limited.

Therefore, it is necessary to improve the existing anti-slide piles for slope support. While ensuring that they have good bending and shear resistance, they have good anchoring force and can produce better tension fixation for slope expansion. effect, and make it easy to install, save time and labor, and save materials.

Contents of the invention

In view of this, the present invention provides an anchoring system for slope support, which has good anchoring force while ensuring good bending and shear resistance, and has a good tension fixing effect on slope expansion. , and make it easy to install, save time and labor, and save materials.

The anchoring system for slope support of the present invention comprises anchor piles and at least one lattice beam arranged transversely along the slope, and at least one of said anchor piles is arranged longitudinally along the lattice beam; A built-in core rod in the pipe that can move axially and at least one set of anti-retraction components that are arranged on the anchor tube and cooperate with the built-in core rod to prevent retreat. Corresponding to the provided top block, the anti-retraction rod is hinged to the anchor pipe and can swing around the hinge point in the vertical plane, the anchor pipe is radially provided with a top block hole, and the top block is arranged in the top block hole inside and can move radially along the anchor tube, the top block cooperates with the tapered surface of the built-in core rod, when the built-in core rod moves downward along the axial direction of the anchor tube, the top block moves outward along the radial direction of the anchor tube and pushes The stop bar swings to the outside of the anchor pipe.

Further, the free ends of the anti-retraction rods of the two adjacent groups of anti-retraction components face opposite.

Further, each set of the anti-retraction components is provided with four anti-retraction rods arranged uniformly along the circumference of the anchor pipe, and one said jacking block is provided corresponding to each anti-retraction rod.

Furthermore, a guideway for guiding the movement of the top block is provided in the hole of the top block.

Further, the top block is provided with a stopper to prevent radial outward movement and falling off.

Further, the built-in core rod is provided with a conical extrusion part for cooperating with the conical surface of the top block corresponding to each set of anti-retraction components.

Further, the outer side of the anti-retraction rod is provided with anti-retraction teeth for enhancing the anti-retraction force.

Further, the anchor pile also includes an anchor cable installation assembly for installing the anchor cable and cooperating with the top end of the built-in core rod for damping and vibration reduction. The anchor cable installation assembly includes an anchor cable installation rod, a damping assembly and a vibration-damping spring. A damping chamber is formed inside the upper end of the core rod, and the damping chamber is filled with magnetorheological fluid medium. The damping assembly is installed in the damping chamber. The arc-shaped rotor body on the connecting sleeve and the electromagnetic coil installed on the arc-shaped rotor body, the anchor cable installation rod is rotatably matched with the upper end of the built-in core rod and the upper end protrudes out of the damping chamber; the anchor cable installation assembly also includes The partition frame fixed on the inner wall of the damping chamber, the inner end of the partition frame fits the outer circumference of the connecting sleeve to divide the damping chamber into two damping sub-chambers, and the arc-shaped rotor body is set in each damping sub-chamber One, there is a radial gap between the arc-shaped rotor body and the inner wall of the sleeve in the circumferential direction to form a damping channel.

Further, one damping spring is provided on both sides of each arc-shaped rotor body, one end of the damping spring abuts against the end of the arc-shaped rotor body, and the other end of the damping spring is connected to the partition frame.

Beneficial effects of the present invention: In the anchoring system for slope support of the present invention, the axial movement of the built-in core rod pushes the top block to move radially along the anchor pipe, and the top block will push the free end of the stop rod to swing, making the stop The retracting rod is extended to the outside of the anchor pipe, so that the anchor pile is firmly fastened in the slope rock and soil as a whole, and can prevent the anchor pile from retreating as a whole; it is squeezed and pushed by the cooperation of the built-in core rod and the cone surface of the top block , not only has a larger contact area, but also has a good overall support effect after being pushed, preventing the backstop rod from moving inward after swinging out, and the built-in core rod can enhance the strength of the anchor pipe, thereby improving the overall bending and shear resistance of the anchor pile. Good anchoring power.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of anchor pile among the present invention;

Fig. 2 is a schematic diagram of the structure along the direction A-A in Fig. 1 .

Detailed ways

Fig. 1 is a schematic diagram of the structure of anchor piles in the present invention, and Fig. 2 is a schematic diagram of the structure in the direction of A-A in Fig. 1, as shown in the figure: the anchor system for slope support in this embodiment includes anchor piles and at least one horizontally arranged along the slope The grid beam, the anchor pile is arranged at least one along the longitudinal direction of the grid beam, and also includes an anchor cable, and the adjacent anchor piles are connected by the anchor cable; each of the anchor piles includes an anchor pipe 1, is arranged in the anchor pipe 1 and Axially movable built-in core rod 2 and at least one set of anti-retraction components arranged on the anchor tube 1 and cooperating with the built-in core rod 2 to stop the retreat. The retracting rod 3 corresponds to the set top block 4, the stop rod 3 is hinged to the anchor pipe 1 and can swing around the hinge point in the vertical plane, the anchor pipe 1 is radially provided with a top block hole 5, and the top block hole 5 is arranged radially. The block 4 is set in the hole 5 of the top block and can move radially along the anchor pipe 1. The top block 4 cooperates with the tapered surface of the built-in core rod 2. When moving, the top block 4 moves radially outward along the anchor pipe 1 and pushes the anti-retraction rod 3 to swing outside the anchor pipe 1; , due to the cooperation between the built-in core rod 2 and the taper surface of the top block 4, the top block 4 moves outward along the top block hole 5, and the top block 4 pushes the anti-retraction rod 3 to swing outward until it exceeds the outer surface of the anchor pipe 1 and squeezes into the deformation Fixed in the slope rock and soil, the anchor pipe 1 is provided with a fin plate 6 at the position where the backstop component is set, and the backstop rod 3 is hinged on the fin plate through a hinge shaft; the lower end of the anchor pipe is a plugging structure, and a drill head 11 is provided. , the upper end of the anchor tube is provided with a locking nut 21 for locking the built-in core rod.

In this embodiment, the free ends of the anti-retraction rods 3 of the adjacent two groups of anti-retraction assemblies face oppositely; The free end of the anti-retraction rod 3 of the anti-retraction assembly faces upwards, of course, it can also be set in the opposite direction, which can ensure the effect of anchoring and anti-retreat.

In this embodiment, each group of the anti-retraction components is provided with four anti-retraction rods 3 uniformly distributed along the circumference of the anchor pipe 1, and corresponding to each anti-retraction rod 3 is provided with a said jacking block 4; The inner surfaces of the block 4 jointly form an inner cone surface with a large upper part and a smaller lower part.

In this embodiment, a guideway 7 for moving and guiding the top block 4 is provided in the top block hole 5 ; the guiding property is good, and the top block 4 is prevented from shaking.

In this embodiment, the top block 4 is provided with a stopper 8 for preventing radial outward movement and falling off; it is used to prevent the top block 4 from falling out of the anchor tube 1 when it moves to the outside of the anchor tube 1 .

In this embodiment, the built-in mandrel 2 is provided with a conical surface extrusion part 9 for matching with the conical surface of the top block 4 corresponding to each group of anti-retraction components; as shown in the figure, the conical surface extrusion part forms a Matching outer cone surface, the outer cone surface is a large and small structure.

In this embodiment, the outer side of the anti-retraction rod 3 is provided with anti-retraction teeth 10 for enhancing the anti-retraction force; the anti-retraction teeth can be inserted into the rock and soil of the slope when the anti-retraction rod 3 swings outward, thereby increasing the anchoring force.

In this embodiment, the anchor pile also includes an anchor cable installation assembly for installing the anchor cable and cooperating with the top end of the built-in core rod 2 for damping and vibration reduction. The anchor cable installation assembly includes an anchor cable installation rod 12, a damping assembly and a vibration reduction Spring, the inside of the upper end of the built-in core rod 2 forms a damping chamber, the damping chamber is filled with a magneto-rheological fluid medium, the damping assembly is installed in the damping chamber, and the damping assembly includes a circumference of the anchor cable installation rod 12 The fixed connecting sleeve 14, the arc-shaped rotor body 15 arranged on the connecting sleeve 14 and the electromagnetic coil 16 installed on the arc-shaped rotor body 15, the anchor cable installation rod 12 is rotatably matched with the upper end of the built-in core rod 2 and the upper end extends out of the damping chamber; the anchor cable installation assembly also includes a partition frame 17 fixed on the inner wall of the damping chamber, and the inner end of the partition frame 17 fits with the outer circumference of the connecting sleeve 14 to separate the damping chamber into two damping chambers. The arc-shaped rotor body 15 is arranged in each damping sub-cavity, and a radial gap is left between the arc-shaped rotor body 15 and the inner wall of the sleeve along the circumferential direction to form a damping channel 18; wherein, the anchor cable installation rod 12 Including the rod body and the anchor cable installation head 19, the anchor cable installation head is threadedly connected with the rod body, the lower end of the anchor cable installation rod 12 is inserted into the damping cavity and fixed with the spline connection sleeve 14, and the upper end of the anchor cable installation rod 12 extends out of the damping cavity And through the bearing and the built-in core rod 2, the damping assembly can be used in combination with an external power supply to control the power on and off of the electromagnetic coil 16. The adjacent anchor piles are connected by anchor cables, and the anchor cables are fixed on the anchors. On the cable installation head, when the hillside in the adjacent position landslides, the anchor cable will drive the anchor cable installation rod 12 to rotate. At this time, due to the function of the damping component, a damping force can be formed on the rotation of the anchor cable installation rod 12, thereby ensuring the tension of the anchor cable. , forming an overall locking effect; in addition, as shown in Figure 2, the partition frame 17 includes a straight plate and a curved plate, the partition frame 17 is integrally formed, the straight plate is fixed to the inner wall of the damping chamber, and the curved plate is connected to the outer circumference of the connecting sleeve 14 Fitting, each damping sub-chamber is divided into two liquid chambers 20 connected to each other by the arc-shaped rotor body 15 arranged in it, and a damping spring is arranged in the liquid chamber. When the arc-shaped rotor body 15 rotates, the two liquid chambers The magnetorheological fluid will generate flow shear in the gap channel between the arc-shaped rotor body 15 and the inner wall of the damping chamber, thereby generating damping force.

In this embodiment, one damping spring is provided on both sides of each arc-shaped rotor body 15, one end of the damping spring is abutted against the end of the arc-shaped rotor body 15, and the other end is connected to the partition frame 17; as shown in Figure 2 As shown, a damping spring is arranged in each liquid chamber.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (8)

1. An anchor system for slope support, characterized in that: comprise anchor piles and at least one grid beam arranged transversely along the slope, said anchor piles are arranged at least one longitudinally along the grid beams; each said anchor pile includes an anchor tube, a built-in core rod arranged in the anchor tube and capable of moving axially, and at least one set of anti-retraction components arranged on the anchor tube and cooperating with the built-in core rod to stop the retreat, and the anti-retraction component includes at least one stop rod and a top block corresponding to the anti-retraction rod, the anti-retraction rod is hinged to the anchor pipe and can swing around the hinge point in the vertical plane, the anchor pipe is radially provided with a top block hole, and the top block is arranged on The jacking block is in the hole and can move radially along the anchor pipe. The jacking block cooperates with the tapered surface of the built-in core rod. When the built-in core rod moves downward along the axial direction of the anchor tube, the jacking block moves Move outward and push the anti-retraction rod to swing to the outside of the anchor pipe; The anchor pile also includes an anchor cable installation assembly for installing the anchor cable and cooperating with the top end of the built-in core rod for damping and vibration reduction. The anchor cable installation assembly includes an anchor cable installation rod, a damping assembly and a vibration-damping spring. A damping chamber is formed inside the upper end of the core rod, and the damping chamber is filled with magnetorheological fluid medium. The damping assembly is installed in the damping chamber. The arc-shaped rotor body on the connecting sleeve and the electromagnetic coil installed on the arc-shaped rotor body, the anchor cable installation rod is rotatably matched with the upper end of the built-in core rod and the upper end protrudes out of the damping chamber; the anchor cable installation assembly also includes The partition frame fixed on the inner wall of the damping chamber, the inner end of the partition frame fits the outer circumference of the connecting sleeve to divide the damping chamber into two damping sub-chambers, and the arc-shaped rotor body is set in each damping sub-chamber One, there is a radial gap between the arc-shaped rotor body and the inner wall of the sleeve in the circumferential direction to form a damping channel. 2 . The anchoring system for slope support according to claim 1 , wherein the free ends of the backstop rods of two adjacent groups of backstop assemblies face opposite directions. 3. The anchoring system for slope support according to claim 2, characterized in that: each set of the stop components is provided with four stop rods uniformly distributed along the circumference of the anchor pipe, corresponding to each stop The rod is provided with one of said top pieces. 4. The anchoring system for slope support according to claim 3, characterized in that: a guideway for guiding the movement of the jacking block is provided in the hole of the jacking block. 5. The anchoring system for slope support according to claim 4, characterized in that: the top block is provided with a stopper to prevent radial outward movement and falling off. 6 . The anchoring system for slope support according to claim 5 , wherein the built-in core rod is provided with a conical extrusion part for matching with the conical surface of the top block corresponding to each set of anti-retraction components. 7 . 7. The anchoring system for slope support according to claim 6, characterized in that: the outer side of the backstop rod is provided with backstop teeth for enhancing the backstop force. 8. The anchoring system for slope support according to claim 1, characterized in that: one damping spring is provided on both sides of each arc-shaped rotor body, and one end of the damping spring is connected to the end of the arc-shaped rotor body The part is resisted, and the other end is connected with the partition frame.