Foundation pit excavation slope protection structure
Through the adjustable slope protection components, the soil compaction net can be automatically adjusted and closely adhered to the slope surface, solving the problems of poor linkage and cumbersome disassembly of traditional protection nets, and improving the slope stability and reuse rate during foundation pit excavation.
Patent Information
- Application Number
- CN202510623549.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-15
- Publication Date
- 2025-09-05
AI Technical Summary
Traditional foundation pit slope protection nets cannot respond quickly to slope deformation and have poor linkage, resulting in delayed protection effects. They are also cumbersome to disassemble, affecting their reuse rate.
Adjustable slope protection components are used, including supporting vertical rods, sliding sleeves, soil compacting rods, fixed sleeves, folding rods, guide rope wheels and rope rollers. The rope rollers control the retraction and extension of the pulling ropes to achieve the lifting and lowering of the soil compacting net and its close contact with the slope surface. The folding rods and tension springs are combined to disperse the lateral pressure.
Ensure that the soil compaction mesh always adheres to the slope surface, disperses lateral pressure, prevents soil flow, improves slope stability, reduces structural deformation, and increases reuse rate.
Smart Images
Figure CN120592243A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of foundation pit protection, and in particular to a foundation pit excavation slope protection structure. Background Art
[0002] Foundation pit excavation slope protection refers to the structural protection measures taken during the construction of building projects, municipal projects, etc. to prevent the foundation pit slope from collapsing, landslides and other risks due to the deadweight of the soil, external loads or environmental factors (such as rain erosion). Temporary or permanent support structures are used to maintain slope stability, ensure construction safety and protect the surrounding environment. Common protection methods include support piles, soil nail walls, anchor support, etc. At the same time, auxiliary facilities such as soil compaction nets and retaining boards are used to cover and reinforce the slope surface.
[0003] In traditional foundation pit slope protection technology, the combination of support piles and protective nets is widely used. Support piles are usually driven vertically into the edge of the foundation pit to provide lateral support, and the protective net is fixed to the slope surface by rigid rods or ropes, using its own weight or mechanical fastening to suppress soil slippage. However, existing protective nets are mostly fixed or manually adjusted, and cannot quickly respond to slope deformation or dynamic needs during the construction phase, resulting in delayed protection effects. In addition, the linkage between traditional protective nets and support piles is poor, making it difficult to achieve multi-node synchronous lifting and lowering control, resulting in uneven local pressure and easily generating blind spots in protection. At the same time, the protective net needs to be released point by point when dismantling, which is cumbersome to operate, and repeated adjustments can easily cause structural deformation, affecting the reuse rate. There are certain defects, so it is necessary to develop a foundation pit excavation slope protection structure. Summary of the Invention
[0004] In response to the above-mentioned defects and problems, the present invention provides a foundation pit excavation slope protection structure, the purpose of which is to ensure that the soil compaction net is always close to the slope surface through adjustable slope protection components, prevent soil flow, perform fixed protection on the slope, and improve the slope stability during foundation pit excavation.
[0005] The solution adopted by the present invention to solve its technical problems is: a foundation pit excavation slope protection structure, including supporting piles and slope protection components, the slope protection components including supporting vertical rods, sliding sleeves, soil pressing rods, fixed sleeves, folding rods, guide rope wheels and rope rollers, the supporting vertical rods are fixed to the top of the supporting piles, the fixed sleeves and the sliding sleeves are respectively mounted on the supporting vertical rods in corresponding manners up and down, and the sliding sleeves can slide along the supporting vertical rods, the soil pressing rods are hinged on the sliding sleeves, the fixed sleeves are fixed to the supporting vertical rods, and the rear section of the folding rods is hinged to the fixed sleeves, and the front section of the folding rods is hinged to the soil pressing rods, a tension spring is connected between the bottom of the rear section and the front section of the folding rods, so that the folding rods can be folded upwards and at the bottom of the rear section of the folding rods A rear stop is provided at the bottom to restrict the upward folding degree of the folding rod; the guide rope wheels are respectively installed on the top of the supporting vertical rod and the side of the sliding sleeve, and the rope roller is arranged on the sliding sleeve, and the pulling rope in the rope roller is sequentially installed on each guide rope wheel and fixedly connected to the rear section of the folding rod; the slope protection components are arranged at intervals on the supporting piles, and a soil pressing net is installed between adjacent soil pressing rods; when the rope roller rotates to reel in the pulling rope, the sliding sleeve rises and at the same time pulls the folding rod downward to control the upward movement of the soil pressing rod to separate the soil pressing net from the slope; when the rope roller rotates to release the pulling rope, the soil pressing rod will move downward to press the soil pressing net to the slope surface, and at the same time the tension spring causes the folding rod to fold upward, so that the soil pressing net protects the slope.
[0006] Beneficial effects of the present invention: The present invention has a unique structure and ingenious design, which can make the soil compaction mesh always close to the slope surface, and combine with the folding rod, tension spring and rear stop to disperse and transmit the lateral pressure of the slope, prevent soil flow or landslide, and ensure the stability of the slope during foundation pit excavation; After the rope roller releases the pulling rope, the soil pressing rod will move downward due to gravity, causing the soil pressing net to be pressed back to the surface of the slope, ensuring that the soil pressing net is always in close contact with the outermost layer of the slope, effectively preventing soil from flowing. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0008] Figure 2 This is one of the structural diagrams of the slope protection component.
[0009] Figure 3 This is the second structural diagram of the slope protection component.
[0010] Figure 4Schematic diagram of the protection status of the slope protection components.
[0011] Figure 5 This is a diagram showing the change in usage status of slope protection components.
[0012] In the figure: 1-support pile, 2-temporary baffle, 3-slope protection assembly, 31-support vertical rod, 32-sliding sleeve, 33-soil pressing rod, 34-fixing sleeve, 35-folding rod, 351-front swing rod, 352-rear swing rod, 36-rear baffle, 37-tension spring, 38-top sleeve, 39-upper guide rope wheel, 310-lower guide rope wheel, 311-rope roller, 312-handwheel, 313-pulling rope, 314-soil pressing net, 4-slope. DETAILED DESCRIPTION
[0013] The present invention will be further described below with reference to the accompanying drawings and examples.
[0014] Example 1: Existing protective nets are mostly fixedly installed or manually adjusted, and cannot quickly respond to slope deformation or dynamic needs during the construction phase, resulting in delayed protection effects. In addition, the traditional protective nets have poor linkage with support piles, making it difficult to achieve multi-node synchronous lifting and lowering control, resulting in uneven local pressure and easily creating blind spots in protection. At the same time, when the protective net is dismantled, it needs to be unfixed point by point, which is cumbersome to operate, and repeated adjustments can easily cause structural deformation, affecting the reuse rate.
[0015] To address the above-mentioned issues, this embodiment provides a protective structure for a foundation pit excavation slope 4, including a slope protection assembly 3. The slope protection assembly 3 is intended to provide shaped protection for the slope 4, so that the soil compaction net 314 can always be pressed against the surface of the slope 4, thereby preventing the soil on the slope 4 from flowing. like Figure 1-3 As shown, the slope protection component 3 includes a support vertical rod 31, a sliding sleeve 32, a soil pressing rod 33, a fixed sleeve 34, a folding rod 35, a guide pulley and a rope roller 311. The support vertical rod 31 is installed on the top of the supporting pile 1. The support vertical rod 31 can be disassembled from the top of the supporting pile 1. The sliding sleeve 32 is slidably mounted on the support vertical rod 31. The sliding sleeve 32 can slide along the support vertical rod 31. The soil pressing rod 33 is hinged to the right side of the sliding sleeve 32, and the soil pressing rod 33 is an obtuse-angle structure; the slope protection component 3 is arranged at intervals on the supporting pile 1, and a soil pressing net 314 is installed between adjacent soil pressing rods 33. The soil pressing net 314 is a flexible net. The soil pressing rod 33 and the soil pressing net 314 can be pressed to the surface of the slope 4 to prevent the soil of the slope 4 from flowing.
[0016] like Figure 3As shown, the fixed sleeve 34 is fixed on the supporting vertical rod 31, and the fixed sleeve 34 is located above the sliding sleeve 32, and the folding rod 35 is hinged on the fixed sleeve 34. The folding rod 35 consists of a front swing rod 351 and a rear swing rod 352. The front swing rod 351 and the rear swing rod 352 are hinged. The front swing rod 351 is the front section of the folding rod 35, and the rear swing rod 352 is the rear section of the folding rod 35. The rear swing rod 352 is hinged to the fixed sleeve 34, and the front swing rod 351 is hinged to the soil pressing rod 33.
[0017] A tension spring 37 is connected between the bottom of the rear section of the folding rod 35 and the front section of the folding rod 35, so that the folding rod 35 is in an upward folding state in a natural state. At the same time, a pull rod is extended from the bottom of the front section of the folding rod 35 and the rear section of the folding rod 35, and the two ends of the tension spring 37 are respectively mounted on the pull rod; and a rear stop 36 is fixed to the bottom of the rear section of the folding rod 35, and the rear stop 36 can support the front section of the folding rod 35 and restrict the upward folding degree of the folding rod 35.
[0018] When the soil of the slope 4 flows and applies lateral pressure to the soil pressing rod 33 and the soil pressing net 314, the soil pressing rod 33 can transfer the lateral pressure it receives to the folding rod 35. At the same time, due to the limiting constraint of the folding rod 35 by the rear baffle 36, the lateral pressure will eventually be transferred to the support pile 1, so that the support pile 1 bears the lateral pressure of the slope 4.
[0019] A top sleeve 38 is installed on the top fixed sleeve 34 of the supporting vertical rod 31, and the guide rope pulley includes an upper guide rope pulley 39 and a lower guide rope pulley 310. The upper guide rope pulley 39 is mounted on the front side of the top sleeve 38, and the lower guide rope pulley 310 is mounted on the front side of the sliding sleeve 32. A roller frame is also installed on the left side of the sliding sleeve 32. The rope roller 311 is rotated and mounted in the roller frame, and a traction rope 313 is wound and mounted in the rope roller 311. The traction rope 313 is sequentially mounted on the upper guide rope pulley 39 and the lower guide rope pulley 310 and is connected to the rear swing rod 352. An anchor nail is provided on the rear swing rod 352, and the free end of the traction rope 313 is fixedly connected to the anchor nail.
[0020] In this embodiment, the support piles 1 are micro piles. Before the foundation pit is excavated, the support piles 1 are constructed as pre-support to provide a function for subsequent excavation and support work. Then the first layer of large-scale earthwork is excavated, leaving a horseway slope. At this time, the excavated earth forms a slope 4 around the foundation pit. Then, temporary baffles 2 are constructed and installed between adjacent support piles 1. The top of the temporary baffle 2 is higher than the bottom of the slope 4, and the slope protection components 3 are arranged at intervals on the top of the support piles 1. At the same time, considering that the foundation pit excavation needs to transport earth outward, the soil compaction net 314 can be installed first during excavation, or the slope protection component 3 can be installed after the initial excavation forms the slope 4 outward.
[0021] like Figure 4As shown, after the side slope 4 around the foundation pit is formed, the soil will gradually accumulate and flow, and the lateral pressure applied to the temporary wall panel will increase, and even a landslide may occur into the foundation pit. Therefore, in this embodiment, the soil pressing net 314 is continuously pressed to the surface of the slope 4, which can directly avoid the flow of the soil on the inclined surface of the slope 4 and realize the shaped protection of the slope 4 in advance. Moreover, after the soil pressing net 314 is continuously pressed to the surface of the slope 4 for a period of time, considering that part of the soil on the surface of the slope 4 will overflow from the soil pressing net 314, resulting in a relatively large gravity on the soil pressing net 314, the soil pressing net 314 is regularly separated from the slope 4 by a certain height as a whole, and then the soil pressing net 314 is moved down to press the surface of the slope 4, so that the soil pressing net 314 can always be pressed to the outermost layer of the inclined surface of the slope 4.
[0022] like Figure 5 As shown, in the initial state, the sliding sleeve 32 is at the lower side of the supporting vertical rod 31, and the soil pressing rod 33 and the soil pressing net 314 are on the slope 4 to provide fixed protection for the slope 4. When the soil pressing net 314 needs to be separated from the slope 4, the construction personnel rotate the control rope roller 311 to reel in the pulling rope 313, so that the sliding sleeve 32 rises and the folding rod 35 is folded downward at the same time. When the soil pressing rod 33 moves upward, the soil pressing net 314 is separated from the slope 4 to a certain height, and at this time the soil pressing rod 33 It will fall due to gravity, and the folding rod 35 will be straightened as a whole at the same time. When the soil compacting net 314 is separated from the slope 4, the rope roller 311 rotates to release the pulling rope 313, and the soil compacting rod 33 will move downward to press the soil compacting net 314 to the surface of the slope 4. At the same time, the tension spring 37 makes the folding rod 35 fold upward, and the rear baffle 36 supports the folding rod 35, so that the soil compacting net 314 protects the slope 4 to prevent the slope 4 from losing soil due to rain or the flow of soil in a natural state.
[0023] Example 2: A foundation pit excavation slope protection structure in this embodiment is described with the differences from Example 1 as the center.
[0024] In this embodiment, a driving member is further provided for driving the rope roller 311 to rotate. The driving member is a handwheel 312 or a motor. The handwheel 312 is installed on the rope roller 311. By rotating the handwheel 312, the rope roller 311 can be controlled to rotate, and the pulling rope 313 can be wound or released. Loosening the handwheel 312 can automatically release the pulling rope 313.
[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.
Claims
1. A foundation pit excavation slope protection structure, comprising support piles, characterized in that: The slope protection assembly also includes a support vertical rod, a sliding sleeve, a soil pressing rod, a fixed sleeve, a folding rod, a guide rope wheel and a rope roller. The support vertical rod is fixed to the top of the supporting pile, and the fixed sleeve and the sliding sleeve are respectively mounted on the support vertical rod in correspondence with each other up and down, and the sliding sleeve can slide along the support vertical rod. The soil pressing rod is hinged on the sliding sleeve, the fixed sleeve is fixed to the support vertical rod, and the rear section of the folding rod is hinged to the fixed sleeve, and the front section of the folding rod is hinged to the soil pressing rod. A tension spring is connected between the bottom of the rear section and the front section of the folding rod to enable the folding rod to fold upward, and a rear stop is provided at the bottom of the rear section of the folding rod to constrain the upward folding of the folding rod. degree; the guide rope wheels are respectively installed on the top of the supporting vertical rod and the side of the sliding sleeve, and the rope roller is arranged on the sliding sleeve, and the pulling rope in the rope roller is sequentially installed on each guide rope wheel and fixedly connected to the rear section of the folding rod; the slope protection components are arranged at intervals on the supporting piles, and a soil pressing net is installed between adjacent soil pressing rods; when the rope roller rotates to reel in the pulling rope, the sliding sleeve rises and at the same time pulls the folding rod downward to control the upward movement of the soil pressing rod to separate the soil pressing net from the slope; when the rope roller rotates to release the pulling rope, the soil pressing rod will move downward to press the soil pressing net to the slope surface, and at the same time the tension spring causes the folding rod to fold upward, so that the soil pressing net protects the slope.
2. A foundation pit excavation slope protection structure according to claim 1, characterized in that: The folding rod is composed of a front swing rod and a rear swing rod, which are hinged. The front swing rod is the front section of the folding rod, and the rear swing rod is the rear section of the folding rod. The rear swing rod is hinged to the fixed sleeve, and the front swing rod is hinged to the soil pressing rod. An anchor nail is provided on the rear swing rod, and the free end of the pulling rope is fixedly connected to the anchor nail.
3. The foundation pit excavation slope protection structure according to claim 1, characterized in that: A driving member is also provided for driving the rope roller to rotate, and the driving member is a hand wheel or a motor.
4. The foundation pit excavation slope protection structure according to claim 1, characterized in that: A top sleeve is fixedly mounted on the top of the supporting vertical rod, and the guide rope pulley includes an upper guide rope pulley and a lower guide rope pulley. The upper guide rope pulley is mounted on the front side of the top sleeve, and the lower guide rope pulley is mounted on the front side of the sliding sleeve. A roller frame is also installed on the left side of the sliding sleeve, and the rope roller is rotatably mounted in the roller frame.
5. The foundation pit excavation slope protection structure according to claim 1, characterized in that: Pull rods are respectively extended from the bottom of the front section of the folding rod and the bottom of the rear section of the folding rod, and two ends of the tension spring are respectively sleeved on the pull rods.
6. The foundation pit excavation slope protection structure according to claim 1, characterized in that: Temporary baffles are installed between adjacent support piles.