A self-weight anchored geogrid reinforced soil structure

Abstract

The present invention relates to the technical field of reinforced soil structures, and in particular to a self-weight anchored geogrid reinforced soil structure, comprising: a gravel soil layer, a bottom drainage layer, a self-weight anchored geogrid reinforced soil layer, an intermediate drainage layer and a slope surface grass layer are sequentially arranged above the gravel soil layer, the self-weight anchored geogrid reinforced soil layer comprises multiple layers of geogrids and soil, and the geogrid comprises: a geogrid main body, the geogrid main body is provided with pressure anchor rods; a connecting assembly, the connecting assembly is used to install the pressure anchor rods on the geogrid main body; a fastening assembly, the fastening assembly comprises an opening mechanism, a water absorption mechanism and a fixing mechanism; the present invention adds prefabricated conical anchor head pressure anchor rods to the self-weight anchored geogrid reinforced soil structure to improve the stability and reinforcement effect of the overall structure.

Description

Technical Field

[0001] The invention relates to the technical field of reinforced soil structures, in particular to a self-weight anchored geogrid reinforced soil structure. Background Art

[0002] Self-weight anchored geogrid reinforced soil structure is a structural form that uses geogrids for soil reinforcement. It is suitable for projects such as fill embankments, dams, and slope reinforcement, and has good stability and economy. Self-weight anchoring design usually refers to providing sufficient anchoring force through self-weight to ensure the stability of the geogrid and the shear strength of the soil.

[0003] When the existing self-weight anchored geogrid is used in areas with heavy rainfall, the long-term scouring of rainwater will cause the tightness of the pressure anchor rods of the geogrid to deteriorate, thereby causing the geogrid to loosen, thereby affecting the stability of the slope. Summary of the invention

[0004] The object of the present invention is to provide a self-weight anchored geogrid reinforced soil structure to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A self-weight anchored geogrid reinforced soil structure comprises a gravel soil layer, a bottom drainage layer, a self-weight anchored geogrid reinforced soil layer, an intermediate drainage layer and a slope surface grass layer are sequentially arranged above the gravel soil layer, the self-weight anchored geogrid reinforced soil layer comprises multiple layers of geogrids and soil, and the geogrid comprises:

[0007] A geogrid body, wherein the geogrid body is provided with a plurality of pressure anchor rods;

[0008] A connecting assembly, the connecting assembly is used to install the pressure anchor rod on the geogrid body;

[0009] A fastening assembly, the fastening assembly comprising an opening mechanism, a water absorption mechanism and a fixing mechanism, the opening mechanism is used to open the water absorption mechanism, the water absorption mechanism is used to absorb water vapor around the pressure anchor rod and input it into the fixing mechanism, and the fixing mechanism is used to fix the pressure anchor rod using the water vapor absorbed by the water absorption mechanism.

[0010] Preferably, the geogrid body comprises a frame, and the pressure anchor rods are connected to the frame.

[0011] Preferably, the pressure anchor comprises a pressure plate, an anchor head, a grouting body and an anchor body, the pressure plate is arranged on the top of the anchor head, the anchor body passes through the anchor head and is inserted into the soil, and the grouting body is arranged around the outside of the anchor body.

[0012] Preferably, the anchor head comprises a conical hollow member, a prefabricated crack pair and an annular gasket, and the prefabricated crack pair and the annular gasket are respectively arranged on both sides of the conical hollow member.

[0013] Preferably, the anchor head is provided with a threaded hole, and the connecting assembly comprises a fixing bolt, and the pressure anchor rod and the geogrid body are connected to each other by inserting the fixing bolt into the threaded hole.

[0014] Preferably, the anchor head is provided with an installation groove and an opening groove, the installation groove and the opening groove are connected to each other, the opening mechanism includes magnetic block 1, magnetic block 2, a trigger block, a sliding block, a support rod and an opening block, the fixing bolt is provided with magnetic block 1, and the trigger block is provided with magnetic block 2. When the fixing bolt and the trigger block contact each other, the magnetic block 1 and the magnetic block 2 are attracted to each other, the trigger block is slidably connected to the installation groove, the sliding block is slidably connected to the opening groove, the trigger block and the sliding block contact each other, the two ends of the support rod are respectively connected to the side wall of the opening groove and the sliding block, and the opening block is connected to the sliding block.

[0015] Preferably, the support rod is provided with a plurality of fracture inducing grooves.

[0016] Preferably, the anchor head is provided with a water absorption groove, the water absorption mechanism is arranged in the water absorption groove, the water absorption mechanism includes a protective shell and calcium chloride particles, the protective shell is arranged on one side of the opening groove, when the magnetic block one is against the magnetic block two and the fixing bolt is rotated, the opening block will pierce the protective shell.

[0017] Preferably, the fixing mechanism includes a filter, a one-way valve, a hydraulic cylinder, a water level sensor, a fixed push rod and a fixed block, the filter is arranged in the water suction trough, the one-way valve is arranged at the bottom of the water suction trough, the one-way valve and the hydraulic cylinder are connected to each other, the water level sensor is arranged inside the hydraulic cylinder, and when the water level sensor detects that the water level in the hydraulic cylinder reaches a set value, the fixed push rod will be opened, and the fixed push rod is used to drive the fixed block to move.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention installs prefabricated conical anchor head pressure anchor rods in the self-weight anchored geogrid reinforced soil structure to improve the stability and reinforcement effect of the overall structure, and adds conical anchor head pressure anchor rods in the self-weight anchored geogrid reinforced soil layer to effectively enhance the bonding force and tensile strength between the soil and the anchor rods, thereby further improving the shear strength and stability of the structure; through the setting of the opening mechanism, the water absorption mechanism is triggered to open when the pressure anchor rod is installed, and the water vapor near the anchor head is adsorbed by the water absorption mechanism during use, and the position of the anchor head is further fixed by triggering the opening of the fixing mechanism through the collected water vapor. This design can be automatically activated according to the humidity changes in the surrounding environment without external intervention, and the fixing mechanism can further lock the anchor head after the water vapor is triggered to ensure the stability of its position, thereby improving the overall safety and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the side view structure of the geogrid of the present invention;

[0021] Figure 3 It is a schematic diagram of the connection structure of the frame and the pressure anchor rod of the present invention;

[0022] Figure 4 This is a schematic diagram of the axial structure of the anchor head of the present invention;

[0023] Figure 5 It is a schematic diagram of the internal cross-sectional structure of the anchor head of the present invention;

[0024] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure of area A in the middle.

[0025] In the figure: 1 gravel soil layer, 2 bottom drainage layer, 3 self-weight anchored geogrid reinforced soil layer, 4 middle drainage layer, 5 slope surface grass layer, 6 frame, 7 pressure plate, 8 anchor head, 9 grouting body, 10 anchor rod body, 11 fixing bolt, 12 magnetic block 1, 13 magnetic block 2, 14 trigger block, 15 sliding block, 16 support rod, 17 opening block, 18 protective shell, 19 calcium chloride particles, 20 filter screen, 21 one-way valve, 22 hydraulic cylinder, 23 water level sensor, 24 fixed push rod, 25 fixed block, 801 conical hollow component, 802 prefabricated crack pair, 803 annular gasket, 804 threaded hole, 1601 fracture induction groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-6 , the present invention provides a technical solution:

[0028] A self-weight anchored geogrid reinforced soil structure comprises a gravel soil layer 1, which is a material mixed with sand and gravel and also has good drainage performance. A bottom drainage layer 2, a self-weight anchored geogrid reinforced soil layer 3, an intermediate drainage layer 4 and a slope surface grass layer 5 are sequentially arranged above the gravel soil layer 1. In this embodiment, the bottom drainage layer 2 and the intermediate drainage layer 4 are both made of crushed stone, which can form a loose structure so that water can be discharged quickly. At the same time, the crushed stone helps to enhance the stability of the overall structure. The self-weight anchored geogrid reinforced soil layer 3 comprises multiple layers of geogrids and soil. The soil is special soil. In this embodiment, the soil is red clay or expansive soil. The geogrid comprises:

[0029] The geogrid body is provided with a plurality of pressure anchor rods;

[0030] A connecting assembly, the connecting assembly is used to install the pressure anchor rod on the geogrid body;

[0031] The fastening assembly includes an opening mechanism, a water absorption mechanism and a fixing mechanism. The opening mechanism is used to open the water absorption mechanism. The water absorption mechanism is used to absorb water vapor around the pressure anchor rod and input it into the fixing mechanism. The fixing mechanism is used to fix the pressure anchor rod using the water vapor absorbed by the water absorption mechanism.

[0032] The geogrid body comprises a frame 6 , to which the pressure anchor rods are connected.

[0033] The pressure anchor includes a pressure plate 7, an anchor head 8, a grouting body 9 and an anchor body 10. The pressure plate 7 can evenly distribute the load applied by the pressure anchor to a larger area to avoid excessive stress concentration at a single position. At the same time, it can increase the tensile strength of the soil or rock, thereby enhancing the effectiveness of the entire anchoring system. The pressure plate 7 is arranged on the top of the anchor head 8, and the anchor body 10 passes through the anchor head 8 and is inserted into the soil. The grouting body 9 is arranged around the outside of the anchor body 10. In this embodiment, the grouting body 9 adopts high-grade cement, which can greatly improve the strength of the grouting body and overcome the disadvantage of weak bearing capacity of the pressure grouting body 9.

[0034] The anchor head 8 includes a conical hollow component 801, a prefabricated crack pair 802 and an annular gasket 803. The prefabricated crack pair 802 and the annular gasket 803 are respectively arranged on both sides of the conical hollow component 801. By grouting around the prefabricated crack splitting pair, the pressure of the soil on both sides of the anchoring section can be fully utilized to improve the anchoring force of the pressure-type anchor rod. When in use, the geometric dimensions of the prefabricated conical hollow component 801 can be adjusted according to engineering needs and the size of the pressure grouting body 9 can be coordinated to effectively ensure the spatial shape and ultimate bearing capacity of the expanded anchoring section.

[0035] The anchor head 8 is provided with a threaded hole 804 , and the threaded hole 804 is used to install the fixing bolt 11 . The connecting assembly includes the fixing bolt 11 , and the fixing bolt 11 is inserted into the threaded hole 804 to connect the pressure anchor rod and the frame 6 to each other.

[0036] The anchor head 8 is provided with an installation groove and an opening groove, and the installation groove and the opening groove are interconnected. The opening mechanism includes a magnetic block 12, a magnetic block 13, a trigger block 14, a sliding block 15, a support rod 16 and an opening block 17. A magnetic block 12 is provided at the bottom of the fixing bolt 11. The magnetic block 12 and the magnetic block 13 are permanent magnets. The magnetic block 12 and the magnetic block 13 will attract each other. The magnetic block 12 and the magnetic block 13 are used to connect the fixing bolt 11 and the trigger block 14 to each other so that the fixing bolt 11 will drive the trigger block 14 to move along the installation groove when it rotates. The trigger block 14 is provided with a magnetic block 2 13, when the fixing bolt 11 and the trigger block 14 are in contact with each other, the magnetic block 12 and the magnetic block 2 13 are attracted to each other, the trigger block 14 is slidably connected to the installation groove, the sliding block 15 is slidably connected to the opening groove, the trigger block 14 and the sliding block 15 are in contact with each other, and the contact position of the trigger block 14 and the sliding block 15 is a trapezoidal structure. The two ends of the support rod 16 are respectively connected to the side wall of the opening groove and the sliding block 15, the support rod 16 is used to support the sliding block 15 when not in use to prevent the opening block 17 from piercing the protective shell 18 before it is not in use, and the opening block 17 is fixedly connected to one end of the sliding block 15 away from the trigger block 14.

[0037] The support rod 16 is provided with a plurality of fracture inducing grooves 1601 , and the fracture inducing grooves 1601 are used to quickly cancel the support of the support rod 16 on the sliding block 15 when the trigger block 14 moves against the sliding block 15 .

[0038] The anchor head 8 is provided with a water absorption groove, and the water absorption mechanism is arranged in the water absorption groove. The water absorption mechanism includes a protective shell 18 and calcium chloride particles 19. The protective shell 18 is wrapped on one side of the opening groove. The calcium chloride particles 19 will be converted into a calcium chloride aqueous solution after adsorbing water vapor. When the magnetic block 12 is against the magnetic block 2 13 and the fixing bolt 11 is rotated, the opening block 17 will puncture the protective shell 18. In this embodiment, the protective shell 18 is made of polylactic acid plastic. Polylactic acid plastic is not only moisture-proof, but also can be easily punctured when needed. At the same time, polylactic acid plastic is degradable and will not cause pollution to the land.

[0039] The fixing mechanism includes a filter screen 20, a one-way valve 21, a hydraulic cylinder 22, a water level sensor 23, a fixed push rod 24 and a fixed block 25. The filter screen 20 is used to support the calcium chloride particles 19. The filter screen 20 is fixedly connected to the inside of the water absorption trough. The shape of the filter screen 20 is the same as the shape of the water absorption trough. In this embodiment, the filter screen 20 is an annular structure. The one-way valve 21 is arranged at the bottom of the water absorption trough. The one-way valve 21 and the hydraulic cylinder 22 are connected to each other. When the water level sensor 23 detects that the water level in the hydraulic cylinder 22 reaches the set value, the fixed push rod 24 will be opened. The fixed push rod 24 is used to drive the fixed block 25 to move.

[0040] Working principle: Before use, the gravel soil layer 1, the bottom drainage layer 2, the self-weight anchored geogrid reinforced soil layer 3, the middle drainage layer 4 and the slope surface grass layer 5 are piled up (or planted) in sequence;

[0041] When installing the geogrid, first insert the anchor head 8 into the soil, then pour the grouting body 9, and after pouring, fix the anchor head 8 to the geogrid body by fixing bolts 11; after the frame 6 of the geogrid body is installed, backfill the soil;

[0042] When installing the fixing bolt 11, as the fixing bolt 11 is installed, the magnetic block 12 and the magnetic block 2 13 will be attracted to each other. After the attraction is completed, as the fixing bolt 11 moves in the threaded hole 804, the trigger block 14 will move in the installation groove to drive the sliding block 15 to move. When the sliding block 15 moves, it will first trigger the support rod 16 to break. As the sliding block 15 moves along the opening groove, it will drive the opening block 17 to puncture the protective shell 18; therefore, when in use, the calcium chloride particles 19 will absorb water vapor. After the adsorption, the calcium chloride solution will enter the hydraulic cylinder 22 through the one-way valve 21. When the water level sensor 23 detects that the water level in the hydraulic cylinder 22 reaches the set value, it will open the fixed push rod 24. At this time, the fixed push rod 24 drives the fixed block 25 to move, thereby enhancing the fastening effect of the anchor head 8.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-weight anchored geogrid reinforced soil structure, comprising a gravel soil layer, a bottom drainage layer, a self-weight anchored geogrid reinforced soil layer, an intermediate drainage layer and a slope surface grass layer are sequentially arranged above the gravel soil layer, characterized in that: The self-weight anchored geogrid reinforced soil layer comprises multiple layers of geogrids and soil, and the geogrid comprises: A geogrid body, wherein the geogrid body is provided with a plurality of pressure anchor rods; A connecting assembly, the connecting assembly is used to install the pressure anchor rod on the geogrid body; A fastening assembly, the fastening assembly comprising an opening mechanism, a water absorbing mechanism and a fixing mechanism, the opening mechanism is used to open the water absorbing mechanism, the water absorbing mechanism is used to absorb water vapor around the pressure anchor rod and input it into the fixing mechanism, and the fixing mechanism is used to fix the pressure anchor rod using the water vapor absorbed by the water absorbing mechanism; The pressure anchor comprises a pressure plate, an anchor head, a grouting body and an anchor body; The anchor head is provided with a threaded hole, and the connection assembly includes a fixing bolt, which is inserted into the threaded hole to connect the pressure anchor rod and the geogrid body to each other; The anchor head is provided with an installation slot and an opening slot, the installation slot and the opening slot are communicated with each other, the opening mechanism comprises a magnetic block 1, a magnetic block 2, a trigger block, a sliding block, a support rod and an opening block, the fixing bolt is provided with a magnetic block 1, the trigger block is provided with a magnetic block 2, when the fixing bolt and the trigger block contact each other, the magnetic block 1 and the magnetic block 2 are attracted to each other, the trigger block is slidably connected to the installation slot, the sliding block is slidably connected to the opening slot, the trigger block and the sliding block contact each other, the two ends of the support rod are respectively connected to the side wall of the opening slot and the sliding block, and the opening block is connected to the sliding block; The support rod is provided with a plurality of fracture inducing grooves; The anchor head is provided with a water absorption groove, the water absorption mechanism is arranged in the water absorption groove, the water absorption mechanism includes a protective shell and calcium chloride particles, the protective shell is arranged on one side of the opening groove, when the magnetic block 1 is against the magnetic block 2 and the fixing bolt is rotated, the opening block will pierce the protective shell.

2. A self-weight anchored geogrid reinforced soil structure according to claim 1, characterized in that: The geogrid body comprises a frame, and the pressure anchor rods are connected to the frame.

3. A self-weight anchored geogrid reinforced soil structure according to claim 2, characterized in that: The pressure bearing plate is arranged on the top of the anchor head, the anchor rod body passes through the anchor head and is inserted into the soil body, and the grouting body is arranged around the outside of the anchor rod body.

4. A self-weight anchored geogrid reinforced soil structure according to claim 3, characterized in that: The anchor head comprises a conical hollow component, a prefabricated crack pair and an annular gasket, wherein the prefabricated crack pair and the annular gasket are respectively arranged on both sides of the conical hollow component.

5. The self-weight anchored geogrid reinforced soil structure according to claim 3, characterized in that: The fixing mechanism includes a filter, a one-way valve, a hydraulic cylinder, a piston, a trigger switch, a fixed push rod and a fixed block. The filter is arranged in the water suction trough, the one-way valve is arranged at the bottom of the water suction trough, the one-way valve and the hydraulic cylinder are connected with each other, and the piston is arranged inside the hydraulic cylinder. When the piston moves to one side of the hydraulic cylinder, it will resist the trigger switch to open the fixed push rod, and the fixed push rod is used to drive the fixed block to move.

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