Multi-anchor-point pile structure capable of collecting and draining water and resisting earthquake
By combining the multi-anchor point round pile structure with the slope drainage system, and using solar photovoltaic devices and deformation sensors for automated control and monitoring, the problem of insufficient groundwater impact and monitoring in landslide treatment is solved, and the cost-effective landslide treatment effect is achieved .
Patent Information
- Application Number
- CN202421012808.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The prior art ignores the impact of groundwater in landslide treatment, resulting in high engineering cost and difficult construction, and lacks all-weather monitoring of the service status of the slope body, which easily leads to instability of the slope body under extreme working conditions.
Using a multi-anchor point pile structure that integrates drainage and earthquake resistance, the multi-anchor point round pile structure is organically combined with the slope drainage system. By installing a solar photovoltaic device on the slope, the drainage is controlled by controlling the drainage by using the groundwater level inside the pile body. And arrange deformation sensors on the anchor cable for long-term monitoring.
The integrated control of the slope "seepage-strength-deformation" is achieved, which reduces additional drainage measures, reduces engineering cost, saves manpower and material resources, and reduces the probability of slope instability through real-time monitoring.
Smart Images
Figure CN222456142U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of slope support, and in particular relates to a drainage and earthquake-resistant multi-anchor pile structure. Background Art
[0002] Rainfall is an important cause of landslide disasters. According to statistics, about 90% of landslides occur during the rainy season. This is because the entry of rainwater increases the moisture content of the soil, lubricates the soil particles, causes the friction between the soil particles to decrease, and weakens the matrix suction, electrostatic attraction, van der Waals force, and mineral cementation between particles, thereby reducing the strength of the soil and reducing the effective stress of the soil, causing soil deformation. That is, rainfall infiltrates the slope to form groundwater seepage, which will change the strength and deformation pattern of the rock and soil, and then induce disasters such as landslides and mud-rock flows. It can be seen that in order to effectively solve the landslide problem, the three factors of rock and soil strength, deformation and permeability should be interconnected, and the landslide problem should be effectively analyzed and solved in mutual coordination. At present, it is unreasonable to emphasize engineering support while ignoring the influence of groundwater or surface water in the treatment of rock and soil diseases. At the least, it will cause a sharp increase in the cost of the project. At the worst, with the aging of the rock and soil, it may still cause deformation and instability of the rock and soil.
[0003] At present, the measures used for slope reinforcement include grouting, traditional anti-slide piles, anchor rods or prestressed anchor cables. Among them, traditional anti-slide piles are considered to be an important support means for landslide control due to their high stiffness, flexible construction and wide applicability. However, traditional anti-slide piles are passive reinforcement structures. If they are used to reinforce large-scale landslides with deep sliding surfaces, the cross-sectional area and length of the pile body need to be increased, which leads to high costs and difficult construction. In recent years, multi-anchor circular pile structures have gradually been used in the treatment of medium and large landslides or high slope diseases due to their advantages such as large reinforcement force and high degree of mechanized construction. However, practitioners only use the support function of multi-anchor circular piles. When it is necessary to effectively drain groundwater, additional measures such as inclined drainage holes, drainage tunnels and water collection wells are still used, resulting in a series of problems such as delays in construction period and increased disturbance to the slope. Therefore, the effective combination of multi-anchor circular piles with landslide drainage systems is a cutting-edge trend in hydraulically driven landslide control, but no data has been reported yet. Although many scholars have combined traditional anti-slide piles with drainage systems to form drainage anti-slide pile structures, there are mainly three problems: ① Additional wires are needed to power the water pumps, but some landslide sites do not have the conditions to provide power for the water pumps, and pulling wires will lead to poor project economy and occupation of land resources; ② Regular manual pumping is required, which is time-consuming and labor-intensive; ③ There is no all-weather monitoring of the service status of the slope. Under extreme working conditions (earthquakes, rise and fall of reservoir water levels), the anti-slide structure is prone to deformation and damage, resulting in instability of the entire slope. Utility Model Content
[0004] In view of the problems mentioned in the background technology, the utility model proposes a multi-anchor pile structure that is integrated with drainage and earthquake-resistant. By organically combining the multi-anchor circular pile structure with the slope drainage system, additional drainage measures are reduced and economic benefits are obtained. By installing a solar photovoltaic device on the slope, the power supply required for the water pump is provided on-site. At the same time, the utility model uses the groundwater level inside the pile body as the control parameter for drainage, replacing the previous need for manual water level monitoring and starting or stopping the drainage of groundwater. Deformation sensors are arranged on the anchor cables, and the service status of the multi-anchor circular pile structure is monitored for a long time based on the deformation threshold of the anchor cables, so as to issue early warnings and forecasts of engineering disasters such as landslides in a timely manner.
[0005] To this end, the utility model adopts the following technical solutions:
[0006] A multi-anchor pile structure with integrated drainage and earthquake resistance, comprising a rectangular pile constructed along a slope, wherein the lower end of the rectangular pile passes through the sliding surface of the slope, a prestressed anchor cable is constructed on the pile body of the rectangular pile, and a drainage structure is arranged on the rectangular pile; the pile body of the rectangular pile comprises a lower pile body and an upper pile body, wherein the cross section of the lower pile body is large, and the cross section of the upper pile body is small, the connection between the lower pile body and the upper pile body is stepped, and the top of the lower pile body forms a platform surface;
[0007] The drainage structure includes a water storage tank located at the lower center of the pile body, and the upper edge of the water storage tank is lower than the sliding surface; a fine sand layer is provided on the pile body close to the upper edge of the water storage tank, and the fine sand layer runs through the inside and outside of the pile body; the fine sand layer includes two layers and is located on the left and right sides of the pile body respectively, and the fine sand layer is in the shape of narrow strips; the two fine sand layers are high on the outside and low on the inside, so that the water outside the pile can flow into the inside of the pile body; the pile body above the sliding surface is wrapped with a flow filter, and the lower end of the flow filter extends to the fine sand layer;
[0008] A water guide hose is provided in the center of the pile body, the lower end of which extends into the water storage tank, and the upper end of which passes through the top of the pile; a water pump is arranged on the slope, and the water pump is connected to the water guide hose, and the water in the water storage tank is discharged through the water pump and the water guide hose;
[0009] It also includes an energy dissipation component installed on the platform surface, the energy dissipation component includes a guide rail, an energy dissipation plate and an energy dissipation spring, the guide rail is arranged on the platform surface, the guide rail includes two guide rails and is perpendicular to the upper pile body; the energy dissipation plate is vertically arranged on the platform surface, the energy dissipation plate is parallel to the upper pile body, the lower end of the energy dissipation plate is connected to a roller, the roller is slidably connected to the guide rail, and the energy dissipation plate can reciprocate along the guide rail; a number of energy dissipation springs are densely distributed between the energy dissipation plate and the upper pile body.
[0010] Furthermore, it also includes a water level sensor arranged in the water storage tank, and the water level sensor is used to monitor the water level height in the water storage tank; when the water level height exceeds the design threshold, the water pump starts to drain water.
[0011] Furthermore, it also includes a solar photovoltaic panel arranged on the slope, which is used to power a water pump; it also includes a controller, which is connected to the water level sensor and the water pump signal, and is used to control the start and stop of the water pump.
[0012] Furthermore, it also includes a deformation sensor arranged on the prestressed anchor cable, and the deformation sensor is connected to the controller signal; when the deformation sensor monitors that the deformation value exceeds the design threshold, the controller sends out an alarm.
[0013] Furthermore, a filter is arranged in the water storage tank to prevent debris from clogging the water hose.
[0014] The beneficial effects of the utility model are:
[0015] 1. The utility model combines multi-anchor piles with strong retaining characteristics with slope drainage, realizes the integrated control of "seepage-strength-deformation" of the slope, reduces additional drainage measures, and under the same conditions, the pile body size of the utility model is smaller than that of traditional anti-slide piles, so the utility model can effectively reduce the engineering cost of landslide control;
[0016] 2. By installing solar photovoltaic devices on the slope, the power supply required for the water pump, water level sensor and deformation sensor is provided on site, reducing maintenance costs;
[0017] 3. The underground water level inside the pile body is used as the control parameter for drainage, which realizes the automatic drainage of groundwater in the slope and saves manpower and material resources;
[0018] 4. Deformation sensors are installed on the anchor cables to monitor the service status of the multi-anchor circular pile structure for a long time based on the deformation threshold of the anchor cables, so as to issue early warnings and forecasts of engineering disasters such as landslides in a timely manner, thus reducing the probability of the entire slope becoming unstable due to damage to the supporting structure;
[0019] 5. The utility model provides an energy dissipation plate and an energy dissipation spring on the pile body. The energy dissipation plate faces the thrust direction of the landslide, and the energy dissipation spring is arranged between the upper pile body and the energy dissipation plate. Since the energy dissipation plate can move back and forth, during an earthquake, the energy dissipation plate plays a buffering and seismic isolation role by moving, reducing the disturbance to the upper pile body and improving the support capacity of the multi-anchor pile. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall construction structure of the utility model;
[0021] Figure 2 It is a construction schematic diagram of the pile body of the utility model;
[0022] Figure 3 It is a schematic diagram of the layout of the energy dissipation plate and the energy dissipation spring of the utility model;
[0023] Figure 4 yes Figure 1 Cross-sectional view of AA in the middle;
[0024] Figure 5 yes Figure 1 Cross-section of the middle BB;
[0025] In the figure: slope 1, sliding surface 2, pile body 3, anchor cable 4, anchor cable hole 5, anchor seat 6, anchor plate 7, clamp 8, concrete 9, one-way flow filter 10, fine sand layer 11, water storage tank 12, gravel layer 13, water level sensor 14, solar panel 15, controller 16, waterproof layer 17, water guide hose 18, filter 19, water pump 20, drainage ditch 21, pile main reinforcement 22, pile spiral stirrup 23, energy dissipation plate 24, energy dissipation spring 25, roller 26, guide rail 27, landslide thrust direction 28. DETAILED DESCRIPTION
[0026] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:
[0027] like Figures 1 to 3 As shown, a multi-anchor pile structure with integrated drainage and earthquake resistance includes a rectangular pile constructed along a slope 1, the lower end of the rectangular pile passes through a sliding surface 2 of the slope 1, a prestressed anchor cable 4 is also constructed on the pile body 3 of the rectangular pile, and a drainage structure is provided on the rectangular pile; the pile body 3 of the rectangular pile includes a lower pile body 3 and an upper pile body 3, the lower pile body 3 has a large cross-section, the upper pile body 3 has a small cross-section, the connection between the lower pile body 3 and the upper pile body 3 is stepped, and the top of the lower pile body 3 forms a platform surface.
[0028] The drainage structure includes a water tank 12 located at the lower center of the pile body 3, and the upper edge of the water tank 12 is lower than the sliding surface 2; a fine sand layer 11 is provided on the pile body 3 close to the upper edge of the water tank 12, and the fine sand layer 11 runs through the inside and outside of the pile body 3; the fine sand layer 11 includes two layers and is respectively located on the left and right sides of the pile body 3, and the fine sand layer 11 is in the shape of a narrow strip; the two fine sand layers 11 are high on the outside and low on the inside, so that the water outside the pile can flow into the inside of the pile body 3; the pile body 3 above the sliding surface 2 is wrapped with a flow filter, and the lower end of the flow filter extends to the fine sand layer 11. It also includes a water level sensor 14 arranged in the water tank 12, and the water level sensor 14 is used to monitor the water level in the water tank 12; when the water level exceeds the design threshold, the water pump 20 starts to drain. A filter 19 is arranged in the water tank 12 to prevent debris from clogging the water guide hose 18.
[0029] A water hose 18 is provided at the center of the pile body 3, the lower end of the water hose 18 extends into the water storage tank 12, and the upper end of the water hose 18 passes through the top of the pile; a water pump 20 is arranged on the slope 1, and the water pump 20 is connected to the water hose 18, and the water in the water storage tank 12 is discharged through the water pump 20 and the water hose 18.
[0030] It also includes an energy dissipation component installed on the platform surface, the energy dissipation component includes a guide rail, an energy dissipation plate 24 and an energy dissipation spring 25, the guide rail is arranged on the platform surface, the guide rail includes two and is perpendicular to the upper pile body 3; the energy dissipation plate 24 is vertically arranged on the platform surface, the energy dissipation plate 24 is parallel to the upper pile body 3, the lower end of the energy dissipation plate 24 is connected to a roller 26, the roller 26 is slidably connected to the guide rail, and the energy dissipation plate 24 can reciprocate along the guide rail; a number of energy dissipation springs 25 are densely distributed between the energy dissipation plate 24 and the upper pile body 3.
[0031] It also includes a solar photovoltaic panel arranged on the slope 1, which is used to power the water pump 20; it also includes a controller, which is connected to the water level sensor 14 and the water pump 20 signal, and is used to control the start and stop of the water pump 20. It also includes a deformation sensor arranged on the prestressed anchor cable 4, which is connected to the controller signal; when the deformation sensor detects that the deformation value exceeds the design threshold, the controller issues an alarm.
[0032] The construction method of the water tank 12 and the fine sand layer is as follows: a template is set up at the bottom of the steel cage to form the water tank 12 and the fine sand layer 11; the water tank 12 is located at the lower part of the center of the steel cage, and the upper edge of the water tank 12 is not higher than the sliding surface 2; the fine sand layer 11 is located at the sliding surface 2, and the fine sand layer 11 runs through the inside and outside of the steel cage. The fine sand layer 11 is used to connect the inside and outside of the pile body 3, so that the water outside the pile body 3 enters the water tank 12 through the fine sand layer 11. When pouring to the position of the water tank 12 and the fine sand layer 11, a gravel layer 13 and a fine sand layer 11 are arranged at the corresponding positions, and a water tank 12 is formed inside the gravel layer 13, and a water guide hose 18 is arranged in the center of the steel cage; after removing the template, subsequent concrete pouring is carried out, and the pile top is sealed. The one-way flow filter 10 is arranged after the pile hole is excavated.
Claims
1. A multi-anchor pile structure for drainage and earthquake resistance, characterized in that: It includes a rectangular pile constructed along the slope, the lower end of the rectangular pile passes through the sliding surface of the slope, a prestressed anchor cable is constructed on the pile body of the rectangular pile, and a drainage structure is arranged on the rectangular pile; the pile body of the rectangular pile includes a lower pile body and an upper pile body, the lower pile body has a large cross section, the upper pile body has a small cross section, the connection between the lower pile body and the upper pile body is stepped, and the top of the lower pile body forms a platform surface; The drainage structure includes a water storage tank located at the lower center of the pile body, and the upper edge of the water storage tank is lower than the sliding surface; a fine sand layer is provided on the pile body close to the upper edge of the water storage tank, and the fine sand layer runs through the inside and outside of the pile body; the fine sand layer includes two layers and is located on the left and right sides of the pile body respectively, and the fine sand layer is in the shape of narrow strips; the two fine sand layers are high on the outside and low on the inside, so that the water outside the pile can flow into the inside of the pile body; the pile body above the sliding surface is wrapped with a flow filter, and the lower end of the flow filter extends to the fine sand layer; A water guide hose is provided in the center of the pile body, the lower end of which extends into the water storage tank, and the upper end of which passes through the top of the pile; a water pump is arranged on the slope, and the water pump is connected to the water guide hose, and the water in the water storage tank is discharged through the water pump and the water guide hose; It also includes an energy dissipation component installed on the platform surface, the energy dissipation component includes a guide rail, an energy dissipation plate and an energy dissipation spring, the guide rail is arranged on the platform surface, the guide rail includes two guide rails and is perpendicular to the upper pile body; the energy dissipation plate is vertically arranged on the platform surface, the energy dissipation plate is parallel to the upper pile body, the lower end of the energy dissipation plate is connected to a roller, the roller is slidably connected to the guide rail, and the energy dissipation plate can reciprocate along the guide rail; a number of energy dissipation springs are densely distributed between the energy dissipation plate and the upper pile body.
2. The multi-anchor pile structure for drainage and earthquake resistance according to claim 1 is characterized in that: It also includes a water level sensor arranged in the water storage tank, which is used to monitor the water level height in the water storage tank; when the water level height exceeds the designed threshold, the water pump starts to drain water.
3. The multi-anchor pile structure for drainage and earthquake resistance according to claim 2 is characterized in that: It also includes a solar photovoltaic panel arranged on the slope, which is used to supply power to a water pump; and a controller, which is connected with a water level sensor and a water pump signal, and is used to control the start and stop of the water pump.
4. The multi-anchor pile structure for drainage and earthquake resistance according to claim 1 is characterized in that: It also includes a deformation sensor arranged on the prestressed anchor cable, which is connected to the controller signal; when the deformation sensor detects that the deformation value exceeds the design threshold, the controller sends out an alarm.
5. The multi-anchor pile structure for drainage and earthquake resistance according to claim 1 is characterized in that: A filter is arranged in the water storage tank to prevent debris from clogging the water guide hose.