Combined loess low slope supporting structure based on I-shaped steel micro pile

Abstract

This utility model relates to the field of building construction technology, and in particular to a combined loess low slope support structure based on H-beam micropiles. It includes a slope body, geogrid, anchor bolt assembly, and H-beam piles. The geogrid is laid on the inner wall of the slope body. The anchor bolt assembly includes inserts inserted into the inner wall of the slope body, with support plates fixed to the ends of the inserts. The H-beam piles are respectively inserted into the inner bottom of the slope body. Compared with traditional loess low slope support structures, this utility model improves the overall stability of the slope through the combination of geogrid, anchor bolt assembly, H-beam piles, and channel steel. The combination of a buffer assembly and a dense mesh net, with an open top, allows the dense mesh net to catch any soil collapses. The damper and spring work together to reduce the impact force on the dense mesh net, improving the stability of soil collection and thus reducing the amount of soil sliding in the foundation pit, improving the safety of foundation pit construction.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a combined loess low slope support structure based on I-beam micropiles. Background Technology

[0002] The combined loess low slope support structure based on I-beam micropiles is a slope protection system designed for the special geological conditions of loess. Loess low slopes generally refer to terrain formed by loess accumulation with an excavation pit depth of less than 5 meters. Loess low slopes are widely distributed in the Loess Plateau and surrounding areas of my country. Loess low slopes are composed of loess with special origins and have unique engineering geological characteristics. The loess particles are fine, with obvious pore structure and well-developed vertical joints, resulting in differences in soil strength in the vertical and horizontal directions. Loess is collapsible and its soil structure is rapidly destroyed when exposed to water. Therefore, it is necessary to support loess low slopes.

[0003] The existing slope protection structure is a structural system formed by the support, reinforcement and protection measures taken for slopes to ensure the safety of slopes and their environment. Among them, low slope protection usually adopts the method of laying geogrids and inserting anchor rods for support.

[0004] When existing loess low slope support structures are in use, the small loess particles with porous structure and developed vertical joints make the slope soil prone to disintegration and detachment during rain, thus affecting the safety of construction. Utility Model Content

[0005] In order to overcome the problem that existing loess low slope support structures are prone to soil disintegration and detachment during rain due to the fine loess particles having a porous structure and developed vertical joints, thus affecting construction safety.

[0006] The technical solution of this utility model is as follows: a combined loess low slope support structure based on I-beam micropiles, including a slope body, geogrid, anchor bolt assembly and I-beam vertical piles. The geogrid is laid on the inner wall of the slope body. The anchor bolt assembly includes a rod inserted into the inner wall of the slope body. The end of the rod is fixed with a support plate. The I-beam vertical piles are respectively inserted into the inner bottom of the slope body. Several channel steels are fixed on the side wall of the I-beam vertical piles. Buffer components are set at both ends of the channel steels. Each buffer component includes a hook that is snapped into both ends of the channel steel. A damper is installed at the bottom end of the hook. A spring is wound on the outer surface of the damper. A connecting ring is fixed at the bottom end of the damper. A dense mesh is woven at the bottom end of the connecting ring.

[0007] Furthermore, the I-beam piles are all linearly distributed, and the inner bottom of the slope body near the I-beam piles is grouted with pressure, which improves the stability of the bottom support of the I-beam piles.

[0008] Furthermore, several ribs are linearly fixed on the inner wall of the I-beam pile, and the two ends of the channel steel are successively supported on the surface of the ribs, which improves the stability of the I-beam pile support.

[0009] Furthermore, a second slot is provided at both ends of the channel steel, and a third slot is provided on the surface of the rib plate. The internal dimensions of the second and third slots are the same for bolt connection, which improves the stability of the channel steel installation.

[0010] Furthermore, the surface of the channel steel near the second slot is provided with a first slot, and the hooks are sequentially engaged in the middle of the second slot, which improves the convenience of hook installation.

[0011] Furthermore, several pressure sensors are fixed on the side wall of the channel steel, and the other end of the pressure sensors is supported on the side wall of the support plate, which improves the detection accuracy.

[0012] Furthermore, the dense mesh is shaped like a sieve, with the bottom end of the mesh tied sequentially to the surface of the channel steel, which improves the stability of the collection.

[0013] Furthermore, a support plate is fixedly provided at the bottom end of the insertion rod, and the insertion rod, support plate and end are fixedly connected to form an integrated structure, with the insertion rods all symmetrically distributed.

[0014] The beneficial effects of this utility model are:

[0015] Compared to traditional loess low slope support structures, this method improves the overall stability of the slope by combining geogrids, anchor bolts, I-beam piles, and channel steel. The combination of buffer components and dense mesh netting, with the top of the mesh open, allows the mesh to catch any soil collapses. The damper and spring work together to reduce the impact force on the mesh netting, improving the stability of soil collection and thus reducing the amount of soil sliding in the foundation pit, thereby improving the safety of foundation pit construction. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the loess low slope support structure of this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the channel steel structure of this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the structure of the buffer component of this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the anchor bolt assembly of this utility model.

[0020] Figure 5 The diagram shown is a schematic representation of the I-beam structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Main body of the slope; 2. Geogrid; 3. Anchor bolt assembly; 301. Insert rod; 302. Support plate; 303. End; 4. I-beam pile; 5. Channel steel; 6. Buffer assembly; 601. Hook; 602. Connecting ring; 603. Damper; 604. Spring; 7. Dense mesh; 8. First slot; 9. Second slot; 10. Pressure sensor; 11. Rib plate; 12. Third slot. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Among the currently discovered feasible technologies, the following are described:

[0024] Pile-slab support structures consist of anti-slide piles and retaining plates. The anti-slide piles penetrate deep into stable strata, transferring landslide thrust to deeper soil layers through skin friction and shear force between the piles and the soil. Retaining plates are installed between the piles to prevent soil collapse. This structure is suitable for low slopes with complex geological conditions and high landslide thrust, offering advantages such as high bearing capacity and minimal impact on the surrounding environment. Based on construction methods, anti-slide piles can be classified into bored piles and excavated piles, among others. Different types are suitable for different geological conditions; for example, bored piles are suitable for various soil and rock layers, while excavated piles are more suitable for strata with little or no water.

[0025] Anchor bolt (cable) support involves drilling holes and inserting anchor bolts (cables) into stable strata, then injecting cement grout or other anchoring materials to ensure a tight bond between the anchor bolt (cable) and the soil. One end of the anchor bolt (cable) is anchored in the stable strata, while the other end is connected to the slope support structure. Its pull-out resistance restrains soil deformation, improving slope stability. Anchor bolt (cable) support is suitable for rock slopes and slopes with relatively good soil conditions. It can be used alone or in combination with other support structures.

[0026] Soil nailing wall support involves setting soil nails of a certain length and density in the soil. Through the interaction between the soil nails and the soil, a reinforced soil mass is formed, which enhances the integrity and shear strength of the soil. Soil nails are generally made of steel bars. During construction, a certain depth of soil is first excavated, then holes are drilled, soil nails are inserted, grouting is performed, and then a concrete panel is shotcreted. This support structure is suitable for unsaturated soil slopes above the groundwater level and with good soil quality. It has the advantages of fast construction speed, low cost, and small site requirements, but its application is limited under adverse geological conditions such as soft soil and quicksand.

[0027] Before designing a support structure for a low slope, a detailed geological survey must be conducted. Through drilling, geophysical exploration, and other means, the geological structure, physical and mechanical properties of the soil and rock (such as unit weight, shear strength, and compression modulus), groundwater conditions (water level, flow direction, and water quality), and adverse geological phenomena (such as landslides, debris flows, and karst caves) of the slope must be determined. Accurate geological survey data is the basis for rationally selecting the type of support structure and determining the design parameters. If the geological survey is incomplete or inaccurate, it may lead to an unreasonable design of the support structure, which will fail to meet the slope stability requirements.

[0028] The construction of anchor bolt (cable) support mainly includes drilling, anchor bolt (cable) fabrication and installation, grouting and other processes. Drilling should be carried out according to the design requirements in terms of position, angle and depth to ensure that the anchor bolt (cable) can be effectively anchored in stable strata. The fabrication of anchor bolts (cables) requires strict control of material quality and processing technology to ensure that their tensile strength meets the requirements. During grouting, the grouting pressure and grouting volume should be controlled to ensure that the grout fully fills the borehole and forms a good anchoring effect.

[0029] Strictly control the quality of raw materials used in the support structure, such as cement, steel, and sand and gravel. Cement should have a qualified factory certificate, and its strength, setting time, and other indicators should meet the requirements. Steel needs to undergo mechanical property testing to ensure that its tensile strength, yield strength, and other properties meet the design standards. The mud content and gradation of sand and gravel should meet the relevant specifications. Unqualified raw materials should not be used to ensure the quality of the support structure from the source.

[0030] Please refer to Figures 1-5A composite loess low slope support structure based on I-beam micropiles includes a slope body 1, a geogrid 2, anchor bolt assemblies 3, and I-beam piles 4. The geogrid 2 is laid on the inner wall of the slope body 1. The geogrid 2 is made of polymer material through stretching and welding processes, and has the characteristics of high tensile strength and low elongation. The geogrid 2 is made of plastic, and its unique mesh structure can tightly interlock with the soil, effectively restraining the lateral displacement of the soil and enhancing the integrity and stability of the soil. The anchor bolt assembly... Component 3 includes insert rods 301 inserted into the inner wall of the slope body 1. The insert rods 301 use their own pull-out force to resist the downward trend of the soil, thereby reducing slope deformation and preventing landslides. Each end of the insert rods 301 is fixed with a support plate 302. The support plate 302 supports the side wall of the geogrid 2, further improving the stability of the geogrid 2 installation. I-beam piles 4 are inserted into the inner bottom of the slope body 1. The I-beam piles 4 are linearly distributed, with the inner bottom of the slope body 1 close to the I-beam piles 4. All sections are grouted under pressure. After the cement grout solidifies, it improves the stability of the bottom support of the H-beam pile 4 and enhances the corrosion resistance of the bottom of the H-beam pile 4. Several channel steels 5 are fixed on the side walls of the H-beam pile 4, thereby improving the overall stability of the slope main body 1 support. Buffer components 6 are provided at both ends of the channel steels 5. Each buffer component 6 includes hooks 601 that are snapped onto both ends of the channel steels 5. A damper 603 is installed at the bottom end of the hook 601, and a spring 6 is wound around the outer surface of the damper 603. 04. A connecting ring 602 is fixed to the bottom end of the damper 603. A dense mesh 7 is woven at the bottom end of the connecting ring 602. The dense mesh 7 is in the shape of a net. The bottom end of the dense mesh 7 is tied to the surface of the channel steel 5 in sequence, which improves the stability of the collection. When the loess slope collapses during the rainy season, it can be caught by the dense mesh 7. The damper 603 and the spring 604 work together to reduce the impact force borne by the dense mesh 7, improve the stability of soil collection, thereby reducing the amount of soil sliding in the foundation pit and improving the safety of foundation pit construction.

[0031] Several ribs 11 are linearly fixed on the inner wall of the I-beam pile 4. The two ends of the channel steel 5 are successively supported on the surface of the ribs 11, which improves the stability of the I-beam pile 4. The two ends of the channel steel 5 are provided with second slots 9, and the surface of the ribs 11 is provided with third slots 12. The internal dimensions of the second slots 9 and the third slots 12 are the same for bolt connection, which improves the stability of the channel steel 5 installation.

[0032] The surface of the channel steel 5 near the second slot 9 is provided with a first slot 8. The hooks 601 are sequentially engaged in the middle of the second slot 9, which improves the convenience of installing the hooks 601. The bottom end of the insertion rod 301 is fixedly provided with a support plate 302. The insertion rod 301, the support plate 302 and the end 303 are fixedly connected to form an integrated structure. The insertion rods 301 are symmetrically distributed.

[0033] Several pressure sensors 10 are fixed on the side wall of the channel steel 5. The pressure sensors 10 can be coupled to the alarm through the PLC controller. The PLC controller is a digital computing and operating electronic system designed for industrial environments. The alarm is a device used to issue warning signals. The alarm alerts people to potential dangers or abnormal situations through sound and light. The alarm is existing technology and will not be described in detail here. When the pressure sensor 10 is subjected to increased pressure, the alarm will sound an alarm to prompt the staff to deal with the risk of landslide on the loess slope in time. The other end of the pressure sensor 10 is supported on the side wall of the support plate 302, which improves the detection accuracy.

[0034] When using this loess low slope support structure, the operator first lays the geogrid 2 on the inner wall of the slope body 1, which is tightly interlocked with the soil, effectively restraining the lateral displacement of the soil and enhancing the integrity and stability of the soil. Then, the insert rods 301 are inserted into the inner wall of the slope body 1 in sequence, and the geogrid 2 is further supported by the support plate 302. The insert rods 301 use their own pull-out force to resist the downward trend of the soil, reduce the deformation of the slope and prevent landslides. Then, the I-beam piles 4 are inserted into the inner bottom of the slope body 1 in sequence, and the channel steel 5 is supported on the side wall of the I-beam piles 4, thereby improving the overall stability of the slope protection. The dense mesh net 7 is hung at both ends of the channel steel 5. When part of the loess slope soil collapses, it can be caught by the dense mesh net 7. The damper 603 and the spring 604 work together to reduce the impact force borne by the dense mesh net 7, improve the stability of soil collection, thereby reducing the amount of soil sliding in the foundation pit and improving the safety of foundation pit construction.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A composite loess low slope support structure based on I-beam micropiles, characterized in that, The structure includes a slope body (1), a geogrid (2), an anchor assembly (3), and I-beam piles (4): the geogrid (2) is laid on the inner wall of the slope body (1), the anchor assembly (3) includes insert rods (301) inserted into the inner wall of the slope body (1), and the ends of the insert rods (301) are fixed with support plates (302), and the I-beam piles (4) are respectively inserted into the inner bottom of the slope body (1), and the side walls of the I-beam piles (4) are... Several channel steels (5) are fixed on each of the channel steels (5). Buffer components (6) are provided at both ends of the channel steels (5). Each buffer component (6) includes a hook (601) that is snapped onto both ends of the channel steels (5). A damper (603) is installed at the bottom end of the hook (601). A spring (604) is wound around the outer surface of the damper (603). A connecting ring (602) is fixed at the bottom end of the damper (603). A dense mesh (7) is woven at the bottom end of the connecting ring (602).

2. The combined loess low slope support structure based on I-beam micropiles according to claim 1, characterized in that: The I-beam piles (4) are all linearly distributed, and the inner bottom of the slope body (1) near the I-beam piles (4) is grouted by pressure injection.

3. The combined loess low slope support structure based on I-beam micropiles according to claim 2, characterized in that: Several ribs (11) are linearly fixed on the inner wall of the I-beam pile (4), and the two ends of the channel steel (5) are successively supported on the surface of the ribs (11).

4. A combined loess low slope support structure based on I-beam micropiles according to claim 3, characterized in that: The channel steel (5) has a second slot (9) at both ends, and the rib plate (11) has a third slot (12) on its surface. The second slot (9) and the third slot (12) have the same internal dimensions for bolt connection.

5. A combined loess low slope support structure based on I-beam micropiles according to claim 1, characterized in that: The surface of the channel steel (5) near the second hole (9) is provided with a first hole (8), and the hook (601) is sequentially engaged in the middle of the second hole (9).

6. A combined loess low slope support structure based on I-beam micropiles according to claim 1, characterized in that: Several pressure sensors (10) are fixed on the side wall of the channel steel (5), and the other end of the pressure sensor (10) is supported on the side wall of the support plate (302).

7. A combined loess low slope support structure based on I-beam micropiles according to claim 6, characterized in that: The dense mesh (7) is shaped like a sieve, and the bottom end of the dense mesh (7) is tied to the surface of the channel steel (5) in sequence.

8. A combined loess low slope support structure based on I-beam micropiles according to claim 1, characterized in that: The bottom end of the insertion rod (301) is fixedly provided with a support plate (302). The insertion rod (301), the support plate (302) and the end (303) are fixedly connected to form an integral structure. The insertion rods (301) are all symmetrically distributed.

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