Shed frame type anchor bar pile structure for slope reinforcement
By setting up a scaffold structure with anchor piles, anchor rods, and connecting beams on the slope, the problems of long construction period and high cost of traditional retaining structures are solved, achieving efficient slope reinforcement and protection against deep landslides. It is suitable for improving the stability of various slope types.
Patent Information
- Application Number
- CN202422752171.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Traditional retaining structures such as anti-slide piles and retaining walls have problems such as large size, large land area, high cost and long construction period when preventing and controlling highway slope disasters. In addition, existing micropile structures have poor stress performance and are difficult to construct when the depth exceeds 20m.
The structure adopts a frame-type anchor pile structure. By setting anchor piles, anchor rods and connecting beams on the multi-level stepped surface of the slope, a common load-bearing body is formed. The bearing capacity of the rock and soil itself is used for reinforcement. Grouting is injected into the anchor piles to form the pile body. The anchor rods are fixedly connected to the connecting beams to form an integral structure.
It shortens the construction period, reduces costs, and improves slope stability. It is suitable for the protection of deep landslides, the reinforcement of unstable fragmented slopes and important structures, and offers high construction flexibility.
Smart Images
Figure CN223481862U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slope reinforcement technology. More specifically, this utility model relates to a scaffold-type anchor pile structure for slope reinforcement. Background Technology
[0002] The construction of highways inevitably creates high slopes or high embankments, which can easily induce or exacerbate geological disasters along the highway. In terms of operational highways, the properties of the soil and rock along the highways are continuously deteriorating due to frequent extreme weather, vehicle loads, and increasing service life. Anti-slide retaining structures also experience aging, damage, and deformation, leading to decreased slope protection effectiveness and frequent slope disasters. Furthermore, the surge in highway construction in recent years has generated a large number of slopes along the routes. Currently, traditional retaining structures such as anti-slide piles and retaining walls have drawbacks in preventing highway slope disasters, including large retaining volumes, extensive land occupation, high costs, large construction site requirements, and long construction periods leading to prolonged traffic control periods. These issues seriously affect the efficiency of the project and the public's travel experience. Therefore, in recent years, micropiles have been used to treat small to medium-shallow landslides. However, the existing commonly used micropiles such as steel pipe piles and steel piles can generally treat landslides with a sliding depth of no more than 20m. When steel pipe piles, root piles, and steel piles are used and the pile length exceeds 20m, their stress performance is poor and it is difficult to place the piles during construction. Utility Model Content
[0003] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.
[0004] To achieve these objectives and other advantages according to this utility model, a scaffold-type anchor pile structure for slope reinforcement is provided. The slope has multiple stepped surfaces along its surface, and multiple anchor piles are provided on each stepped surface. A pile hole is vertically drilled on each stepped surface corresponding to each anchor pile. The anchor pile includes a fixedly connected anchor bundle and a grouting pipe. Grout is injected into the pile hole through the grouting pipe to form the pile body of the anchor pile. n anchor piles on the same stepped surface are grouped together, and a connecting beam is provided at the top of each group of anchor piles. Each group of anchor piles is provided with an anchor rod, one end of which is anchored in the slope, and the other end is fixedly connected to the corresponding connecting beam.
[0005] Preferably, the anchor bar bundle includes four main bars arranged in a grid pattern, with gaps between adjacent main bars, and multiple guide positioning bars are spaced apart along the vertical direction, the guide positioning bars being fixedly connected to the main bars on both sides.
[0006] Preferably, the anchor bar bundle also includes lifting ring bars; the lifting ring bars are arranged in an inverted U-shape at the top of the anchor bar bundle segment, and both ends are fixedly connected to one of the main bars.
[0007] Preferably, two or three anchor piles on the same level of step are grouped together.
[0008] Preferably, the connecting beam is a reinforced concrete structure with a steel cage inside, and the anchor bar bundles at the top of the anchor bar pile are fixedly connected to the steel cage.
[0009] Preferably, the spacing between two adjacent anchor piles is 0.7~2m.
[0010] This utility model has at least the following beneficial effects:
[0011] The slope reinforcement scaffold-type anchor pile structure provided by this utility model utilizes the anchor piles, anchor rods, connecting beams, and the soil and rock mass between the piles to form a common bearing body. It fully mobilizes and utilizes the bearing capacity of the soil and rock mass itself for slope reinforcement. It can handle deep landslides and can be used for reinforcement and protection of slopes with poor stability, fractured loose structures, longitudinal slopes, or excavated slopes with important structures such as high-voltage power towers and houses at the top. It can also be used for naturally broken and steep road sections. The construction period is shorter than that of traditional retaining structures, which can effectively reduce construction costs.
[0012] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. Attached Figure Description
[0013] Figure 1 This is a structural schematic diagram of the scaffold-type anchor pile structure described in this utility model;
[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of the anchor bar bundle described in the utility model; Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.
[0016] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0017] like Figure 1 and Figure 2 As shown, this utility model provides a scaffold-type anchor pile structure for slope reinforcement. The slope has multiple stepped surfaces along its surface, and multiple anchor piles 1 are provided on each stepped surface. Each anchor pile 1 has a vertically drilled pile hole corresponding to each anchor pile 1 on each stepped surface. Each anchor pile 1 includes a fixedly connected anchor bundle and a grouting pipe. Grout is injected into the pile hole through the grouting pipe to form the pile body of the anchor pile 1. n anchor piles 1 on the same stepped surface are grouped together, and a connecting beam 3 is provided at the top of each group of anchor piles 1. Each group of anchor piles 1 is provided with an anchor rod 2. One end of the anchor rod 2 is anchored in the slope, and the other end is fixedly connected to the corresponding connecting beam 3.
[0018] In this technical solution, the anchor piles 1, anchor rods 2, connecting beams 3, and the soil and rock mass between the piles form a common load-bearing body. This fully mobilizes and utilizes the bearing capacity of the soil and rock mass itself for slope reinforcement, treating slip surfaces up to 30m deep. It can be used for reinforcement and protection of slopes with poor stability, fractured loose structures, dipping slopes, or excavated slopes where important structures such as high-voltage power towers or houses are located at the top. It can also be used for naturally broken, steep road sections. First, a multi-step surface is prepared or excavated along the slope. Then, pile holes are driven onto the step surface at the designed intervals, the anchor bundles are hoisted, and the grouting pipes are buried. Grout is then injected into each pile hole through the grouting pipes. Using n anchor piles 1 as a group, the connecting beams 3 are constructed at the top of the piles to connect the group of anchor piles into an integral structure, realizing the transfer of force on the anchor piles 1, forming a pile-soil composite effect, and improving the shear and bending resistance of the frame-type anchor pile structure. Finally, the anchor rod 2 is constructed. Preferably, the anchor rod 2 can be a prestressed anchor rod, with one end extending into the potential slip surface 4 within the slope and the other end fixed to the connecting beam 3. A platform drainage ditch is provided near the bottom of the upper slope surface on each step surface, and a side ditch is provided at the bottom of the slope for drainage.
[0019] In another technical solution, the anchor bundle includes four main reinforcing bars 11 arranged in a grid pattern, with gaps between adjacent main reinforcing bars 11, and multiple guide and positioning reinforcing bars 12 spaced vertically. The guide and positioning reinforcing bars 12 are fixedly connected to the main reinforcing bars 11 on both sides. The four main reinforcing bars 11 are connected into a single unit by the guide and positioning reinforcing bars 12, forming an anchor bundle. The guide and positioning reinforcing bars 12 are not arranged along the entire length of the main reinforcing bars 11 to reduce the weight of the entire anchor bundle segment. Generally, for longer anchor bundles, the main reinforcing bars 11 are obtained by connecting multiple segments sequentially, and adjacent segments can be connected by threaded sleeves.
[0020] Furthermore, the anchor bar bundle also includes lifting ring bars; the lifting ring bars are arranged in an inverted U-shape at the top of the anchor bar bundle, and both ends are fixedly connected to one of the main bars 11. The lifting ring bars are used to facilitate the overall hoisting of the anchor bar bundle.
[0021] In another technical solution, specifically, two or three anchor piles 1 on the same step surface are grouped together, and the value of n is 2 to 3. A connecting beam 3 is set at the top of a group of anchor piles 1, and the bottom of the connecting beam 3 is embedded in the soil of the step surface.
[0022] In another technical solution, the connecting beam 3 is a reinforced concrete structure with a steel cage inside, and the anchor bar bundles at the top of the anchor pile 1 are fixedly connected to the steel cage; then, cement mortar is poured to form the connecting beam 3, so as to connect the anchor piles 1 in the same group into a whole.
[0023] In another technical solution, the spacing between two adjacent anchor piles 1 is 0.7~2m. The anchor piles 1 on the stepped surface are arranged in a rectangular shape. Specifically, the pile spacing along the direction of the lateral earth pressure on the anchor pile 1 when the rock and soil are about to fail is 0.7~2.0m, and the pile spacing perpendicular to the force direction of the anchor pile 1 is 1.0~1.2m.
[0024] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A scaffold-type anchor pile structure for slope reinforcement, wherein the slope has multiple stepped surfaces along its surface, characterized in that... Multiple anchor piles are installed on each step surface, and pile holes are vertically drilled on each step surface corresponding to each anchor pile. Each anchor pile includes a fixedly connected anchor bundle and a grouting pipe. Grout is injected into the pile hole through the grouting pipe to form the pile body of the anchor pile. n anchor piles on the same step surface are grouped together, and a connecting beam is installed at the top of each group of anchor piles. Each group of anchor piles is equipped with an anchor rod, one end of which is anchored in the slope, and the other end is fixedly connected to the corresponding connecting beam.
2. The scaffolded anchor pile structure for slope reinforcement as described in claim 1, characterized in that, The anchor bar bundle includes four main bars arranged in a grid pattern, with gaps between adjacent main bars, and multiple guide positioning bars are spaced apart along the vertical direction. The guide positioning bars are fixedly connected to the main bars on both sides.
3. The scaffolded anchor pile structure for slope reinforcement as described in claim 2, characterized in that, The anchor bar bundle also includes lifting ring bars; the lifting ring bars are arranged in an inverted U-shape at the top of the anchor bar bundle segment, and each end is fixedly connected to one of the main bars.
4. The scaffolded anchor pile structure for slope reinforcement as described in claim 1, characterized in that, Two or three anchor piles on the same level of step form a group.
5. The scaffolded anchor pile structure for slope reinforcement as described in claim 1, characterized in that, The connecting beam is a reinforced concrete structure with a steel cage inside, and the anchor bar bundles at the top of the anchor pile are fixedly connected to the steel cage.
6. The scaffolded anchor pile structure for slope reinforcement as described in claim 1, characterized in that, The spacing between two adjacent anchor piles is 0.7~2m.