Mountainous area slope filling embankment vertical bar planting equipment and construction method

Abstract

The invention discloses mountainous area slope filling embankment vertical bar planting equipment and a construction method, and the mountainous area slope filling embankment vertical bar planting equipment comprises a walking mechanism, a vehicle frame arranged on the walking mechanism, a control system and a bar supply mechanism which are respectively arranged on the vehicle frame, and a bar planting mechanism which is connected to the tail end of the vehicle frame through a connecting assembly, the steel bar supplying mechanism corresponds to the steel bar planting mechanism; operation is easy, construction is convenient and fast, the construction efficiency can be improved, and meanwhile the stability of the slope embankment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of reinforced embankments, and particularly relates to a vertical steel bar planting device and a construction method for a mountain slope filled embankment. Background Art

[0002] With the development of urbanization, more and more roads and railways are built on soft soil foundations. Due to the poor characteristics of soft soil, pavement deformation, cracking and even landslides often occur. Therefore, it is very important to carry out appropriate foundation treatment, and certain measures must be taken to treat the soft soil foundation to meet the requirements of subgrade stability and deformation. There are many conventional foundation treatment methods, including surcharge preloading method, drainage consolidation method, replacement method, dynamic compaction method, etc. Most of these methods have certain requirements for the site geological conditions, and there are problems such as long construction period and difficult control of post-construction settlement. In order to adapt to complex geological conditions and meet the requirements of rapid embankment filling at the same time, reinforced soil embankments have emerged.

[0003] In actual engineering, the existing technology of reinforced soil mainly adopts the method of horizontally arranging one or more layers of geosynthetics or other reinforcing materials in a certain range below the foundation. In recent years, a new reinforcing method has emerged, that is, the use of three-dimensional steel bars (H-V). This reinforcing method has much higher cohesion and internal friction angle of the soil mass than the ordinary reinforcing method, thus improving the foundation bearing capacity and reducing the foundation settlement. However, there are some deficiencies in the existing reinforced soil technology. For example, the understanding of material properties is insufficient. At present, for geosynthetics, only the main functions are understood, but the properties are not understood, and they cannot be fully utilized; the design is too conservative, with overlapping reduction coefficients and safety factors; there is a large gap between the design and the actual working conditions of the reinforced soil structure, and the measured strain is much smaller than the design value. Moreover, the reinforcing method for mountain slope filled embankments is not common nowadays, and the conventional method of using reinforced soil is likely to cause pavement deformation and even cracking due to insufficient lateral restraint. Summary of the Invention

[0004] The purpose of the present invention is to provide a vertical steel bar planting device and a construction method for a mountain slope filled embankment, so as to solve the problem of easy instability during the reinforcement of mountain slope filled embankments.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A vertical steel bar planting device for a mountain slope filled embankment, including a traveling mechanism, a vehicle frame arranged on the traveling mechanism, a control system and a steel bar supply mechanism respectively arranged on the vehicle frame, and a steel bar planting mechanism connected to the tail end of the vehicle frame through a connecting component, the steel bar supply mechanism corresponding to the steel bar planting mechanism;

[0006] The post-inserted bar mechanism includes a plurality of post-inserted bar units, and each post-inserted bar unit includes an opening component, a frame body, and a pushing connecting rod; the opening component is connected to the frame body through the pushing connecting rod, a crank and a transmission component are respectively rotatably arranged on the frame body, a connecting rod is connected to the edge position of the crank, and the end of the connecting rod away from the crank is arranged on the opening component.

[0007] Further, the opening component includes a post-inserted bar nozzle, a control board, a control rod, a pushing plate, a funnel, and a connecting bolt;

[0008] The post-inserted bar nozzle is connected to the funnel, a spring is arranged between the control rod and the post-inserted bar nozzle, a convex rod is arranged above the spring, and the convex rod is in contact with the bottom end of the pushing plate. The control board, the control rod, and the pushing plate are connected through the connecting bolt. The control board is connected to the crank through the connecting rod. The post-inserted bar nozzle includes two duckbill-shaped rods that fit together, and oblique small holes are formed in the duckbill-shaped rods.

[0009] Further, the pushing connecting rod includes a small crank and a pushing rod. The small crank is connected to the pushing rod, and the end of the pushing rod away from the small crank is connected to the pushing plate.

[0010] Further, the transmission component includes a large transmission gear and a small transmission gear. The large transmission gear is connected to the frame body through a rotating shaft, and the small transmission gear is connected to the pushing rod of the pushing connecting rod.

[0011] Further, a laser sensor is arranged on the pushing plate, and the laser sensor is communicatively connected to the control system.

[0012] Further, the bar supply mechanism includes a conveyor belt and a separation groove. The outlet of the conveyor belt faces the opening direction of the funnel. A plurality of separation members are arranged at intervals on the separation groove. The separation groove is divided into a plurality of separation groove units by the separation members. A plurality of separation plates are respectively arranged in each separation groove unit, and the separation groove unit is divided into a plurality of small separation grooves by the separation plates.

[0013] The present invention also provides a construction method for vertical post-inserted bars in a mountain slope filled embankment, which is carried out based on the vertical post-inserted bar equipment for a mountain slope filled embankment, and includes the following steps:

[0014] S1. Perform construction layout and marking on the embankment according to the design requirements. When marking, use a plum blossom marking method, and stagger the upper and lower layer positions for marking to determine the post-inserted bar positions;

[0015] S2. Clean the slope surface, remove the vegetation, surface vegetation, humus soil, and other obstacles in the construction area, level the slope surface and perform preliminary treatment;

[0016] S3. Determine the layer thickness according to the layered filling principle and technology. According to the principles of horizontal layering and longitudinal segmentation, fill the first layer of soil. For the same layer, the soil should be filled in the way of from both sides to the middle; the height of the first layer of soil is 40 cm, and a cross slope of 2% to 4% is formed on the surface of each layer towards the mountain body to facilitate drainage.

[0017] S4. According to the markings, on the compacted filling layer, symmetrically implant the first layer of vertical bars from the middle to both sides through equipment. When implanting the bars, leave a distance at the soil filling boundary; the length of the vertical bars should be slightly less than twice the thickness of the filled soil. When implanting, the horizontal distance and the vertical distance are both 1500 mm, and the implanting depth is 90% of the soil filling height. Check whether the vertical bars are vertical without inclination; reserve the position of the micro steel pipe piles on the mountain body side during filling.

[0018] S5. Obliquely drill holes and drive in the auxiliary drain pipes at the connection between the filling layer and the mountain body; the length of the auxiliary drain pipes is not less than 1000 mm, and a butterfly-shaped groove is provided at the opening, and small holes are opened in the groove; the auxiliary drain pipes are filled with fine sand, and the direction points to the drainage channel inside the mountain body; the auxiliary drain pipes are arranged every three layers of soil filling.

[0019] S6. Fill the second layer of soil along the direction of the vertical bars. When filling the soil, do not knock down the vertical bars, and form a cross slope of 2% to 4% on the surface; the thickness of the second layer of soil filling is the same as that of the first layer of soil filling, and make the first layer of vertical bars expose the top on the soil filling surface.

[0020] S7. Symmetrically implant the second layer of vertical bars from the middle to both sides through equipment. When implanting the bars, leave a distance at the soil filling boundary. The insertion depth and the bar spacing are the same as those of the first layer of vertical bars; the second layer of vertical bars is staggered with the first layer of vertical bars, and the implanting points are located at the midpoints of every two first layer of vertical bars. Check whether the vertical bars are vertical without inclination.

[0021] S8. On the surface of the second layer of soil filling, lay horizontal bar strips along the direction of implanting the bars, fix them with U-shaped nails every 2 m, and keep the bar strips flat without wrinkles; the horizontal bar strips should extend beyond the boundary of the vertical bars, and extend downward into the soil filling by 10 cm to 15 cm at the end; the horizontal bar strips are closely attached to the top of the first layer of vertical bars and the middle of the second layer of vertical bars, and use double-strand steel wires to tie and connect them to form a whole; when overlapping the horizontal bar strips, the overlapping width shall not be less than 15 cm; within 2 m at the filling junction, the number of steel wire strands can be appropriately increased for reinforcement.

[0022] S9. Fill the third layer of soil, and repeat the above steps until the filling elevation position.

[0023] S10. On the side of the top layer of soil filling close to the mountain body, install three rows of micro steel pipe piles along the longitudinal direction; the micro steel pipe piles should penetrate the filling layer and extend into the mountain slope by not less than 1500 mm.

[0024] S11. Fill the last layer of soil and compact the ground surface. Roll from both sides to the center, with the wheel tracks overlapping by 1 / 3 to 1 / 2 of the wheel width to meet the design compaction standard.

[0025] S12. After filling is completed, set up a drainage ditch on the side close to the mountain. Install several small holes in the drainage ditch and bury a main drainage pipe under it. The main drainage pipe extends into the mountain towards the internal drainage channel of the mountain.

[0026] Further, the treatment of the slope surface in S2 includes the following steps:

[0027] S21: Excavate steps on the original slope surface, and the steps need to be filled and compacted.

[0028] S22. Excavate a longitudinal temporary drainage ditch to prevent waterlogging inside the roadbed.

[0029] S23: Conduct preliminary compaction of the roadbed, with the compaction degree requirement not less than 90%.

[0030] S24: Lay a cushion layer with a thickness of not less than 10 mm at the bottom of the roadbed using sand and gravel as materials.

[0031] Further, the method of vertical steel bar planting in S4 includes the following steps:

[0032] S41: Operate the steel bar planting equipment and set the layout method, short bar spacing, and insertion depth in the control system.

[0033] S42: Place the vertical bars in the partition area in sequence along the conveyor belt direction and set the steel bar planting mechanism to the initial position.

[0034] S43: Determine the position of the equipment according to the line setting and marking, and operate the equipment.

[0035] S44: When the remaining amount of short bars on the conveyor belt is small, supplement the number of short bars and repeat S42 to S43 until the steel bar planting is completed.

[0036] Further, the method of installing micro steel pipe piles in S10 includes the following steps:

[0037] S101. Use drilling equipment to drill holes on the top layer of the filled soil and trim the hole wall. Clean the residue and debris at the bottom of the hole. Reserve a small hole at the bottom of the hole with a depth of 100 mm. It can be understood that when grouting, the grout will penetrate into the soil along the reserved small hole, making it combine with the soil around the pile bottom to form a whole.

[0038] S102. Sink the micro steel pipe pile into the hole to the target depth, and be careful not to knock against the hole wall during sinking.

[0039] S103, injecting grout into the inner cavity of the micro steel pipe pile, stirring while injecting grout, and sealing the steel pipe pile after injecting grout to a specified height;

[0040] S104. After sealing is completed, an enlarged end plate is installed on the pile top. During installation, a certain prestress is applied to the top of the enlarged end plate, and then the enlarged end plate is fixed so that the enlarged end plate is close to the top layer of fill.

[0041] Furthermore, after the filling in S12 is completed, stability monitoring shall be carried out for embankments with slope height exceeding 20 meters or embankments with ground slope steeper than 1:2.5; during the layered filling process of the embankment, monitoring shall be carried out before each layer is filled, and after the filling is completed, testing shall be carried out once a month; in case of extreme weather conditions such as heavy rain, the testing time interval shall be appropriately shortened to ensure the stability and safety of the embankment.

[0042] The present invention has the following beneficial effects: The present invention provides a vertical reinforcement device and construction method for a slope fill embankment in a mountainous area:

[0043] 1. By implanting short vertical bars in the fill, the present invention has a more significant control effect on deformation than the traditional horizontal reinforcement method, especially on the control of horizontal displacement, which can better ensure the lateral stability of the slope, reduce uneven settlement, and ensure good performance of the embankment.

[0044] 2. When planting reinforcement, a plum blossom-shaped arrangement is adopted. Due to the cross arrangement of short reinforcements in the soil, a relatively dense support network is formed, which can better bear and disperse the load when under pressure, improve the local bearing capacity of the soil, and ensure the good stability of the embankment.

[0045] 3. By connecting the middle ends of the short bars in the same layer, the horizontal reinforcement-soil friction effect can be utilized, while the vertical short bars play a lateral resistance and restraint role through the "compacted area" formed between the soil bodies, thereby improving the overall stability of the slope roadbed and ensuring good safety performance of the embankment.

[0046] The vertical reinforcement construction method for a slope embankment in a mountainous area provided by the present invention is simple to operate and convenient to construct, and can improve the construction efficiency while ensuring the stability of the slope embankment. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the overall structure of the reinforcement planting equipment for slope filling road in mountainous area of ​​the present invention;

[0048] Figure 2 It is a schematic diagram of the structure of the reinforcing bar implant monomer of the present invention;

[0049] Figure 3 It is a schematic diagram of the push connecting rod structure of the present invention;

[0050] Figure 4It is a schematic diagram of the opening mechanism of the present invention;

[0051] Figure 5 It is a schematic diagram of the steel bar planting nozzle and control rod structure of the present invention;

[0052] Figure 6 It is a schematic diagram of the steel bar supply mechanism of the present invention;

[0053] Figure 7 It is a flowchart of the construction method in the mountain slope fill embankment of the present invention;

[0054] Figure 8 It is a schematic diagram of the construction method in the mountain slope fill embankment of the present invention.

[0055] In the figure: 1, vehicle frame; 2, traveling mechanism; 3, control system; 4, steel bar planting mechanism; 41, opening mechanism; 411, steel bar planting nozzle; 4111, duckbill-shaped rod; 412, control plate; 413, control rod; 414, push plate; 415, connecting bolt; 416, funnel; 42, frame body; 43, push connecting rod; 431, small crank; 432, push rod; 44, crank; 45, transmission component; 451, large transmission gear; 452, small transmission gear; 46, small connecting rod; 47, rotating shaft; 48, laser sensor; 5, steel bar supply mechanism; 51, conveyor belt; 52, partition groove; 521, partition member; 522, small partition groove; 523, partition plate; 6, telescopic rod; 7, guide rail plate; 81, vertical steel bar; 82, horizontal steel bar; 83, steel wire; 841, micro steel pipe pile; 842, enlarged end plate; 85, drainage ditch; 86, main drain pipe; 87, auxiliary drain pipe. Detailed implementation manners

[0056] The principles and features of the present invention will be described below in conjunction with the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0057] As Figures 1 to 6 shown, a vertical steel bar planting device for a mountain slope fill embankment includes a traveling mechanism 2, a vehicle frame 1 provided on the traveling mechanism 2, a control system 3 and a steel bar supply mechanism 5 respectively provided on the vehicle frame 1, and a steel bar planting mechanism 4 connected to the tail end of the vehicle frame 1 through a connecting component. The steel bar supply mechanism 5 corresponds to the steel bar planting mechanism 4. The traveling mechanism 2 drives the whole device to move on the slope, and the crawler or wheeled structure adapts to complex terrains. The vehicle frame 1 serves as the main body to support other components. The control system 3 is automated or remote-controlled to control the operation of the whole device. The steel bar supply mechanism 5 is responsible for providing steel bars and is the part for storing and transporting steel bars. The steel bar planting mechanism 4 is the part for actually inserting the steel bars into the embankment and is installed at the tail end of the vehicle frame 1 through a connecting component so that the position can be adjusted during walking. The steel bar supply mechanism 5 and the steel bar planting mechanism 4 correspond to each other, and the two need to work together to ensure that the steel bars are accurately implanted.

[0058] The rebar planting mechanism 4 includes multiple rebar planting units. Each rebar planting unit is surrounded by an iron box, and a guide rail plate 7 is provided below. The guide rail plate 7 is slidably connected to the rebar planting unit 40 and is connected to the telescopic rod 6. The rebar planting unit includes an opening component, a frame body 42, and a pushing connecting rod 43. The opening component is connected to the frame body 42 through the pushing connecting rod 43. A crank 433 and a transmission component 45 are respectively rotatably provided on the frame body 42. A connecting rod is connected to the edge position of the crank 433, and the end of the connecting rod away from the crank 433 is provided on the opening component. The rebar planting unit, as the basic functional unit of the rebar planting mechanism 4, undertakes the task of specifically completing the rebar planting operation. Multiple rebar planting units work together to improve the rebar planting efficiency and meet the requirements of large-area or large-quantity rebar planting. The opening component is a key component that directly contacts the rebar planting hole and performs the hole-opening action. It is responsible for accurately opening a hole that meets the rebar planting requirements at a predetermined position, creating conditions for the subsequent implantation of the rebar. Driven by the pushing connecting rod 43, the opening component can perform linear motion or motion along other specific trajectories, thereby realizing the hole-opening of the rebar planting material. The frame body 42 is the support structure of the entire rebar planting unit, providing an installation foundation and a fixed position for other components, ensuring the relative positions of the components are stable, and ensuring that the rebar planting unit can work properly. The frame body 42 usually has sufficient strength and stiffness to withstand various forces generated during the rebar planting process, such as the thrust transmitted by the pushing connecting rod 43, the inertial forces generated by the motion of the crank 433 and the connecting rod, etc. It is made of metal materials and assembled by means of welding, bolt connection, etc.

[0059] The pushing connecting rod 43 plays a role in power transmission and motion guidance. The pushing connecting rod 43 includes a small crank 431 and a pushing rod 432. The small crank 431 is connected to the pushing rod 432, and the end of the pushing rod 432 away from the small crank 431 is connected to the pushing plate 414. It transmits the power generated on the frame body 42 to the opening component, enabling the opening component to move along a predetermined trajectory and speed, and realizing the hole-opening action. One end of the pushing connecting rod 43 is connected to the frame body 42, and the other end is connected to the opening component. When a power source on the frame body 42, such as a motor, drives the pushing connecting rod 43 to move, the pushing connecting rod 43 converts the power into linear motion or other forms of motion, pushing the opening component to complete the hole-opening task.

[0060] The crank 433 is a power conversion and motion adjustment component in the rebar planting unit. It converts rotational motion into reciprocating motion of the connecting rod or other forms of motion, thereby changing the type and parameters of the motion to meet the requirements of the opening action of the opening component. The crank 433 is usually connected to a power source such as a motor and rotates under the drive of the power source. Since the connecting rod is connected to the edge position of the crank 433, as the crank 433 rotates, one end of the connecting rod will perform circular motion along with the circular motion of the edge of the crank 433, while the other end of the connecting rod drives the opening component to perform reciprocating linear motion or other specific motions, realizing the conversion of the motion form. The transmission component 45 is used to transmit power and motion between different components on the frame 42, coordinate the working rhythms of each component, and ensure that the entire rebar planting unit can operate efficiently and stably. The transmission component 45 includes a large transmission gear 451 and a small transmission gear 452. The large transmission gear 451 is connected to the frame 42 through a rotating shaft 47, and the small transmission gear 452 is connected to the push rod 432 of the push connecting rod 43.

[0061] The connecting rod is an intermediate component connecting the crank 433 and the opening component. It transmits the rotational motion of the crank 433 to the opening component, realizing the transmission of power and the conversion of motion. One end of the connecting rod is connected to the edge position of the crank 433, and the other end is arranged on the opening component. When the crank 433 rotates, one end of the connecting rod performs circular motion along with the crank 433. Due to the length and connection method of the connecting rod, the other end of the connecting rod drives the opening component to perform reciprocating linear motion or other forms of motion, thereby driving the opening component to complete the hole opening action.

[0062] Specifically, the opening component includes a rebar planting nozzle 41, a control board 412, a control rod 413, a push board 414, a funnel 416 and a connecting bolt 415; the rebar planting nozzle 41 is connected to the funnel 416, a spring is provided between the control rod 413 and the rebar planting nozzle 41, a convex rod is provided above the spring, and the convex rod is in contact with the bottom end of the push board 414. The control board 412, the control rod 413 and the push board 414 are connected by the connecting bolt 415. The control board 412 is connected to the crank 433 through a connecting rod. The rebar planting nozzle 41 includes two duckbill-shaped rods 4111 that fit together, and oblique small holes are provided on the duckbill-shaped rods 4111.

[0063] Among them, the rebar planting nozzle 41 is a component that directly contacts the rebar planting hole and performs key operations. It is mainly used to guide the rebar into the rebar planting hole and play a role in positioning and restraint during the hole opening or rebar planting process. The rebar planting nozzle 41 consists of two duckbill-shaped rods 4111 that fit together, and this structure enables the rebar planting nozzle 41 to have a certain opening and closing ability. The control board 412 is one of the key components for controlling the movement of the opening assembly. It is connected to the control rod 413 and the push plate 414 through connecting bolts 415, playing a role in transmitting motion and force. At the same time, the control board 412 is connected to the crank 433 through a connecting rod, converting the rotational motion of the crank 433 into its specific motion, and then driving the entire opening assembly to perform corresponding actions. When the crank 433 rotates, it drives the control board 412 to move through the connecting rod. The movement of the control board 412 is then transmitted to the control rod 413 and the push plate 414 through the connecting bolts 415 to achieve the coordinated work of each component.

[0064] A spring is provided between the control rod 413 and the rebar planting nozzle 41. By its own movement, it changes the compression state of the spring, thereby controlling the opening and closing degree of the rebar planting nozzle 41. When the control rod 413 receives the acting force of the push plate 414, it overcomes the elastic force of the spring, compresses the spring, and further separates the two duckbill-shaped rods 4111 of the rebar planting nozzle 41; when the acting force of the push plate 414 disappears or changes, the elastic force of the spring causes the control rod 413 to reset, so that the two duckbill-shaped rods 4111 of the rebar planting nozzle 41 fit together again. The push plate 414 is an intermediate component connecting the control board 412 and the control rod 413. It transmits the movement of the control board 412 to the control rod 413 to achieve the transmission of force and the conversion of motion. The bottom end of the push plate 414 fits with the convex rod, and indirectly controls the movement of the control rod 413 through the action of the convex rod. When the control board 412 moves, the push plate 414 will move accordingly. The movement of the push plate 414 exerts an acting force on the convex rod, and the convex rod then transmits the force to the control rod 413, thereby controlling the opening and closing of the rebar planting nozzle 41.

[0065] The funnel 416 is mainly used to guide the rebar into the rebar planting nozzle 41 smoothly. During the rebar planting process, the rebar is placed from above the funnel 416, and the rebar will slide along the inner wall of the funnel 416 into the rebar planting nozzle 41 and then into the rebar planting hole, improving the accuracy and efficiency of rebar planting. The funnel 416 usually has a larger upper opening and a smaller lower opening. The upper opening is convenient for putting the rebar, and the lower opening is connected to the rebar planting nozzle 41 to ensure that the rebar can accurately enter the rebar planting nozzle 41.

[0066] The connecting bolts 415 play a role in fixing and connecting each component, connecting the control board 412, the control rod 413 and the push plate 414 into a whole, enabling them to work together. At the same time, the connecting bolts 415 can also ensure the relative position stability between each component, avoiding loosening or displacement during the working process, which affects the normal operation of the opening assembly.

[0067] In addition, a laser sensor 48 is provided on the pushing plate 414, and the laser sensor 48 is communicatively connected to the control system 3.

[0068] The steel bar feeding mechanism 5 includes a conveyor belt 51 and a partition groove 52. The outlet of the conveyor belt 51 faces the opening direction of the funnel 416. A plurality of partition members 521 are spaced on the partition groove 52. The partition groove 52 is divided into a plurality of partition groove 52 units by the partition members 521. A plurality of partition plates 523 are respectively arranged in each partition groove 52 unit. The partition groove 52 unit is divided into a plurality of small partition grooves 522 by the partition plates 523.

[0069] As Figures 7 to 8 shown, the present invention also provides a construction method for vertical steel bar implantation in a mountain slope embankment filled with soil. The construction is carried out based on the vertical steel bar implantation equipment for the mountain slope embankment filled with soil, and includes the following steps:

[0070] S1. Carry out construction layout and marking on the embankment according to the design requirements. When marking, a plum blossom shape is used for marking, and the upper and lower layer positions are staggered for marking to determine the steel bar implantation positions.

[0071] S2. Clean the slope surface, remove the vegetation, surface vegetation, humus soil and other obstacles in the construction area, and level and preliminarily process the slope surface.

[0072] Specifically, when processing the slope surface, the following steps are included:

[0073] S21: Excavate steps on the original slope surface, and the steps need to be filled and compacted.

[0074] S22: Excavate longitudinal temporary drainage ditches to prevent water accumulation inside the roadbed.

[0075] S23: Carry out preliminary compaction on the roadbed, and the compaction degree requirement is not less than 90%.

[0076] S24: Lay a cushion layer with a thickness of not less than 10 mm at the bottom of the roadbed using sand and gravel as materials.

[0077] S3. Determine the layer thickness according to the principle and process of layered filling. According to the principle of horizontal layering and longitudinal segmentation, fill the first layer of soil. For the same layer, the soil filling should be carried out in the way from both sides to the middle. The height of the first layer of soil is 40 cm, and a cross slope of 2% to 4% is formed on the surface of each layer towards the mountain to facilitate drainage.

[0078] S4. According to the markings, on the compacted filling layer, symmetrically implant the first layer of vertical bars 81 from the middle to both sides through the equipment, and leave a distance at the filling boundary during bar implantation; the length of the vertical bars 81 should be slightly less than twice the thickness of the fill. During implantation, the lateral distance and the longitudinal distance are both 1500 mm, the implantation depth is 90% of the fill height, and check whether the vertical bars 81 are vertical without inclination; reserve the position of the micro steel pipe piles 841 on one side of the mountain during filling;

[0079] Specifically, the method for vertical bar implantation in S4 includes the following steps:

[0080] S41: Operate the bar implantation equipment and set the layout method, short bar spacing, and bar insertion depth in the control system 3;

[0081] S42: Place the vertical bars 81 in the partition area in sequence along the direction of the conveyor belt 51, and set the bar implantation mechanism 4 to the initial position;

[0082] S43: Determine the position of the equipment according to the layout and markings, and operate the equipment;

[0083] S44: When the remaining quantity of short bars on the conveyor belt 51 is small, supplement the quantity of short bars, and repeat S42 to S43 until the bar implantation is completed.

[0084] S5. Obliquely drill holes and drive in the auxiliary drain pipes 87 at the connection between the filling layer and the mountain; the length of the auxiliary drain pipes 87 is not less than 1000 mm, there is a butterfly groove at the opening, and small holes are drilled in the groove; the auxiliary drain pipes 87 are filled with fine sand, and the direction points to the drainage channel inside the mountain; the auxiliary drain pipes 87 are arranged every three layers of fill.

[0085] S6. Fill the second layer of soil along the direction of the vertical bars 81. When filling the soil, do not knock down the vertical bars 81, and form a 2% to 4% cross slope on the surface; the thickness of the second layer of fill is the same as that of the first layer of fill, and make the first layer of vertical bars 81 expose their tops on the fill surface;

[0086] S7. Symmetrically implant the second layer of vertical bars 81 from the middle to both sides through the equipment. Leave a distance at the filling boundary during bar implantation. The insertion depth and the spacing of the vertical bars 81 are the same as those of the first layer of vertical bars 81; the second layer of vertical bars 81 is staggered from the first layer of vertical bars 81, and the implantation points are located at the midpoints between every two vertical bars 81 of the first layer. Check whether the vertical bars 81 are vertical without inclination;

[0087] S8. On the surface of the second layer of fill soil, lay 82 horizontal reinforcement bars along the direction of the implanted bars, fix them with U-shaped nails every 2 m, and keep the bars flat and without wrinkles; the 82 horizontal reinforcement bars should extend beyond the boundary of the vertical bars 81 and extend downward into the fill soil by 10 cm to 15 cm at the end; the 82 horizontal reinforcement bars are closely attached to the top of the first layer of vertical bars 81 and the middle of the second layer of vertical bars 81, and use double-strand steel wire 83 to tie and connect them to form a whole; when overlapping the 82 horizontal reinforcement bars, the overlapping width shall not be less than 15 cm; within 2 m at the filling junction, the number of strands of steel wire 83 can be appropriately increased for reinforcement.

[0088] S9. Fill the third layer of soil and repeat the above steps until the filling elevation position is reached;

[0089] S10. On the side of the top layer of fill soil close to the mountain body, install three rows of micro steel pipe piles 841 along the longitudinal direction; the micro steel pipe piles 841 should penetrate the fill layer and extend into the mountain slope by not less than 1500 mm;

[0090] The method of installing the micro steel pipe piles 841 includes the following steps:

[0091] S101. Use drilling equipment to drill holes on the top layer of fill soil and trim the hole walls, and clean the residue and debris at the bottom of the holes; reserve small holes at the bottom of the holes, and the depth of the small holes is 100 mm; it can be understood that when grouting, the grout will penetrate into the soil along the reserved small holes and combine with the soil around the pile bottom to form a whole;

[0092] S102. Sink the micro steel pipe piles 841 into the holes to the target depth, and pay attention not to bump the hole walls when sinking;

[0093] S103. Inject grout into the inner cavity of the micro steel pipe piles 841, stir while injecting grout, and seal the steel pipe piles after injecting grout to the specified height;

[0094] S104. After sealing, install an enlarged end plate 842 on the top of the pile. When installing, apply a certain prestress on the top of the enlarged end plate 842, and then fix the enlarged end plate 842 to make the enlarged end plate 842 closely attached to the top layer of fill soil.

[0095] S11. Fill the last layer of soil and compact the ground surface. Compact from both sides to the center, and the wheel tracks need to overlap by 1 / 3 to 1 / 2 of the wheel width to make it reach the design compaction standard;

[0096] S12. After the filling is completed, set a drainage ditch 85 on the side close to the mountain body. Set several small holes in the drainage ditch 85, and bury a main drainage pipe 86 under the drainage ditch 85; the main drainage pipe 86 extends into the mountain body and faces the internal drainage channel of the mountain body.

[0097] After the filling is completed, stability monitoring shall be carried out for embankments with a slope height exceeding 20 meters or embankments with a ground slope ratio steeper than 1:2.5; during the process of layered filling of the embankment, monitoring shall be carried out once before each layer of filling, and after the filling is completed, detection shall be carried out once a month; in case of extreme weather conditions such as heavy rain, the detection time interval shall be appropriately shortened to ensure the stability and safety of the embankment.

[0098] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vertical rebar planting device for a filled embankment on a mountain slope, characterized in that It includes a traveling mechanism (2), a vehicle frame (1) provided on the traveling mechanism (2), a control system (3) and a steel bar feeding mechanism (5) respectively provided on the vehicle frame (1), and a steel bar planting mechanism (4) connected to the tail end of the vehicle frame (1) through a connecting component. The steel bar feeding mechanism (5) corresponds to the steel bar planting mechanism (4); The steel bar planting mechanism (4) includes a plurality of steel bar planting units. Each steel bar planting unit includes an opening component, a frame body (42), and a pushing connecting rod (43). The opening component is connected to the frame body (42) through the pushing connecting rod (43). A crank (433) and a transmission component (45) are respectively rotatably provided on the frame body (42). A connecting rod is connected to the edge position of the crank (433). The end of the connecting rod away from the crank (433) is provided on the opening component.

2. The vertical rebar planting device for the filled embankment on the mountain slope according to claim 1, characterized in that, The opening component includes a steel bar planting nozzle (41), a control plate (412), a control rod (413), a pushing plate (414), a funnel (416) and a connecting bolt (415); The steel bar planting nozzle (41) is connected to the funnel (416). A spring is provided between the control rod (413) and the steel bar planting nozzle (41). A convex rod is provided above the spring, and the convex rod is in contact with the bottom end of the pushing plate (414). The control plate (412), the control rod (413) and the pushing plate (414) are connected through the connecting bolt (415). The control plate (412) is connected to the crank (433) through the connecting rod. The steel bar planting nozzle (41) includes two duckbill-shaped rods (4111) that fit together, and oblique small holes are provided on the duckbill-shaped rods (4111).

3. The vertical rebar planting device for the filled embankment on the mountain slope according to claim 2, wherein, The pushing connecting rod (43) includes a small crank (431) and a pushing rod (432). The small crank (431) is connected to the pushing rod (432). The end of the pushing rod (432) away from the small crank (431) is connected to the pushing plate (414).

4. The vertical rebar planting device for the filled embankment on the mountain slope according to claim 1, wherein, The transmission component (45) includes a large transmission gear (451) and a small transmission gear (452). The large transmission gear (451) is connected to the frame body (42) through a rotating shaft (47). The small transmission gear (452) is connected to the pushing rod (432) of the pushing connecting rod (43).

5. The vertical rebar planting device for the filled embankment on the mountain slope according to claim 2, characterized in that, A laser sensor (48) is provided on the pushing plate (414). The laser sensor (48) is communicatively connected to the control system (3).

6. The vertical rebar planting device for the filled embankment on the mountain slope according to claim 2, wherein, The steel bar feeding mechanism (5) includes a conveyor belt (51) and a partition groove (52). The outlet of the conveyor belt (51) faces the opening direction of the funnel (416). A plurality of partition members (521) are provided at intervals on the partition groove (52). The partition groove (52) is divided into a plurality of partition groove (52) units by the partition members (521). A plurality of partition plates (523) are respectively provided in each partition groove (52) unit. The partition groove (52) unit is divided into a plurality of small partition grooves (522) by the partition plates (523).

7. A construction method for vertical steel bar implantation in a filled embankment on a mountain slope, characterized in that, Constructing by using the vertical rebar planting equipment for the filled embankment on the mountain slope according to any one of claims 1 to 6, including the following steps: S1. Carry out construction layout and marking for the embankment according to the design requirements. When marking, use a plum blossom shape for marking, and stagger the positions of the upper and lower layers to determine the rebar planting positions. S2. Clean the slope surface, remove the vegetation, surface vegetation, humus soil and other obstacles within the construction area, and level and preliminarily process the slope surface. S3. Determine the layer thickness according to the layered filling principle and technology. According to the principle of horizontal layering and longitudinal segmentation, fill the first layer of soil. For the same layer, the soil should be filled in the way from both sides to the middle. The height of the first layer of soil is 40 cm, and a cross slope of 2% to 4% should be formed on the surface of each layer towards the mountain body to facilitate drainage. S4. According to the marking, on the compacted filling layer, symmetrically implant the first layer of vertical rebars (81) from the middle to both sides through the equipment. When implanting the rebars, leave a distance at the soil filling boundary. The length of the vertical rebars (81) should be slightly less than twice the thickness of the filled soil. When implanting, the horizontal distance and the longitudinal distance are both 1500 mm, and the implanting depth is 90% of the height of the filled soil. Check whether the vertical rebars (81) are vertical without inclination. Reserve the position of the micro steel pipe piles (841) on the mountain side during filling. S5. Obliquely drill holes and drive in the auxiliary drain pipes (87) at the connection between the filling layer and the mountain body. The length of the auxiliary drain pipes (87) is not less than 1000 mm. There is a butterfly groove at the opening, and small holes are opened in the groove. The auxiliary drain pipes (87) are filled with fine sand, and the direction points to the drainage channel inside the mountain body. The auxiliary drain pipes (87) are arranged once every three layers of filled soil. S6. Fill the second layer of soil along the direction of the vertical rebars (81). When filling the soil, do not knock down the vertical rebars (81), and form a cross slope of 2% to 4% on the surface. The thickness of the second layer of filled soil is the same as that of the first layer of filled soil, and make the first layer of vertical rebars (81) expose the top on the soil filling surface. S7. Symmetrically implant the second layer of vertical rebars (81) from the middle to both sides through the equipment. When implanting the rebars, leave a distance at the soil filling boundary. The insertion depth and the spacing of the vertical rebars (81) are the same as those of the first layer of vertical rebars (81). The second layer of vertical rebars (81) is staggered with the first layer of vertical rebars (81), and the implanting points are located at the midpoints of every two vertical rebars (81) in the first layer. Check whether the vertical rebars (81) are vertical without inclination. S8. On the surface of the second layer of filled soil, lay horizontal rebar strips (82) along the rebar planting direction, fix them with U-shaped nails every 2 m, and keep the rebar strips flat without wrinkles. The horizontal rebar strips (82) should extend beyond the boundary of the vertical rebars (81) and extend 10 cm to 15 cm downward into the filled soil at the end. The horizontal rebar strips (82) are closely attached to the top of the first layer of vertical rebars (81) and the middle of the second layer of vertical rebars (81), and use double-strand steel wires (83) to tie and connect them to form a whole. When overlapping the horizontal rebar strips (82), the overlapping width shall not be less than 15 cm. Appropriately increase the number of strands of the steel wires (83) within 2 m at the filling junction for reinforcement. S9. Fill the third layer of soil, and repeat the above steps until the filling elevation position is reached. S10. Install three rows of micro steel pipe piles (841) along the longitudinal direction on the side of the top layer of the fill near the mountain body. The micro steel pipe piles (841) should penetrate through the fill layer and extend into the mountain slope by no less than 1500 mm. S11. Fill the last layer of soil and compact the ground surface. Compact it from both sides to the center, and the wheel tracks need to overlap by 1 / 3 to 1 / 2 of the wheel width to reach the design compaction standard. S12. After completion of filling, set a drainage ditch (85) on the side near the mountain body. A number of small holes are provided in the drainage ditch (85), and a main drainage pipe (86) is buried under the drainage ditch (85). The main drainage pipe (86) extends into the mountain body and drains towards the internal drainage channel of the mountain body.

8. The construction method of vertical steel bar planting for filled embankment on mountain slopes according to claim 7, characterized in that, The steps for treating the slope surface in S2 include the following: S21: Excavate steps on the original slope surface, and the steps need to be filled and compacted. S22. Excavate a longitudinal temporary drainage ditch to prevent water accumulation inside the subgrade. S23: Conduct preliminary compaction of the subgrade, and the compaction degree requirement is not less than 90%. S24: Lay a cushion layer with a thickness of not less than 10 mm at the bottom of the subgrade using sand and gravel as materials.

9. The construction method of vertical steel bar planting in the filled embankment on the mountain slope according to claim 7, characterized in that, The method of vertical steel bar planting in S4 includes the following steps: S41: Operate the steel bar planting equipment and set the layout method, short bar spacing, and insertion depth in the control system (3). S42: Place the vertical bars (81) in the partition area in sequence along the direction of the conveyor belt (51), and set the steel bar planting mechanism (4) to the initial position. S43: Determine the position of the equipment according to the setting out and marking, and operate the equipment. S44: When the remaining amount of short bars on the conveyor belt (51) is small, supplement the number of short bars, and repeat S42 to S43 until the steel bar planting is completed.

10. The construction method of vertical steel bar planting in the filled embankment on the mountain slope according to claim 7, characterized in that, The method of installing the micro steel pipe piles (841) in S10 includes the following steps: S101. Use drilling equipment to drill holes on the top layer of the fill and trim the hole walls, and clean the residues and sundries at the bottom of the holes. Reserve small holes at the bottom of the holes, and the depth of the small holes is 100 mm. It can be understood that when grouting, the grout will penetrate into the soil along the reserved small holes, so that it combines with the soil around the pile bottom to form a whole. S102. Sink the micro steel pipe piles (841) into the holes to the target depth, and be careful not to knock against the hole walls when sinking. S103. Grout into the inner cavity of the micro steel pipe piles (841), stir while grouting, and seal the steel pipe piles after grouting to the specified height. S104. After sealing, install an enlarged end plate (842) on the top of the pile. Apply prestress on the top of the enlarged end plate (842) during installation, and then fix the enlarged end plate (842) to make the enlarged end plate (842) close to the top layer of the fill.

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