Energy pile testing device and method considering mud skin effect

Abstract

This invention discloses an energy pile testing device and method considering the mud cake effect, comprising: a pile body structure including a receiving pile, a hollow monitoring component disposed within the receiving pile, and a reserved component disposed on the receiving pile; a developing mechanism; the outer wall of the receiving pile can be welded with stiffening ribs, jacks can be installed at the top and bottom of the receiving pile, insulation cotton is also provided on the outer side of the receiving pile, and a thermometer is installed inside the receiving pile. Through the interaction of the water separation plate, developing plate, and partition at the developing mechanism in this device, the deformation of the pile, mud cake, and soil during the energy pile experiment is quantified and transformed by multiple piston tubes of the same height but different lengths at the pressure sensing component, so that the developing pen leaves a trajectory change at the developing plate, thereby making the deformation process inside the pile visible, which is beneficial for experimental personnel to observe the deformation changes more intuitively, quantifying the deformation process, and making the experimental results more accurate.

Description

Technical Field

[0001] This invention relates to the technical field of building engineering, and in particular to a test device and method for energy piles that takes into account the mud cake effect. Background Technology

[0002] Energy piles, as a novel building structure combining structural load-bearing and heat exchange functions, have been widely used in the construction engineering field in recent years. However, extensive engineering practice has shown that the thermodynamic characteristics of energy piles during operation differ significantly from predicted values, such as heat exchange efficiency and settlement characteristics. These differences are closely related to factors such as the geometric dimensions, structural form, and operating environment of the energy pile itself. The presence of mud cake between the pile and the soil further exacerbates the influence of these factors. Currently, although some testing equipment for the thermodynamic characteristics of energy piles exists, it still faces limitations in visualizing the deformation of the pile, mud cake, and soil during deformation, and in accurately simulating the groundwater seepage process. Summary of the Invention

[0003] Purpose of the invention: The purpose of this invention is to provide an energy pile testing device and method that takes into account the mud skin effect.

[0004] Technical solution: This invention provides an energy pile test device considering the mud cake effect, comprising,

[0005] The pile body mechanism includes a receiving pile, a hollow monitoring component disposed within the receiving pile, and a reserved component disposed on the receiving pile;

[0006] The developing mechanism includes a developing component disposed within the reserved component and a responding component disposed within the receiving pile;

[0007] The water control mechanism includes a water filter component disposed within the receiving pile, a drain pipe disposed on the receiving pile, and a flow storage component disposed on the drain pipe;

[0008] The outer wall of the receiving pile can be welded with stiffening ribs, and jacks can be installed at the top and bottom of the receiving pile. Insulation cotton is also installed on the outside of the receiving pile, and a thermometer is installed inside the receiving pile.

[0009] Furthermore, the hollow monitoring component includes a side mounting platform disposed within the receiving pile, and a monitoring camera disposed on the side mounting platform;

[0010] Furthermore, the monitoring camera is capable of transmitting image and video information to the terminal.

[0011] Furthermore, the reserved components include a developing plate, a partition plate, and a water separating plate disposed inside the receiving pile, which divide the receiving pile into a test chamber, a water filtering chamber, a monitoring chamber, and a cavity;

[0012] Furthermore, the water separation plate is capable of allowing water to flow through it, the developing plate is made of transparent acrylic sheet, and coordinate points are drawn on the developing plate.

[0013] Furthermore, the developing component includes a stand disposed in the cavity, an anti-tilt assembly disposed on the stand, and a developing pen disposed on the anti-tilt assembly;

[0014] Furthermore, the anti-tilt assembly includes an anti-tilt cylinder disposed on the frame, a telescopic spring disposed inside the anti-tilt cylinder, a stop plate connected to one end of the telescopic spring, and a plurality of limiting blocks disposed inside the anti-tilt cylinder.

[0015] Furthermore, the developing pen is a fluorescent pen, the abutment is directly the same as the inner diameter of the anti-tilt cylinder, the multiple limiting blocks are symmetrically arranged inside the anti-tilt cylinder, and the specifications of the developing pen are adapted to the limiting blocks.

[0016] Furthermore, the response component includes multiple sets of piston tubes disposed in the water filtration chamber, and a pressure-sensitive component disposed within the piston tubes;

[0017] Furthermore, the pressure-sensitive component includes a suction rod disposed inside the piston tube, a response rod disposed inside the piston tube, and piston pads disposed at both ends of the piston tube. The suction rod is connected to the bottom of the water separation plate, and the response rod is connected to the bottom of the stand.

[0018] Furthermore, the piston tube extends through the partition into the cavity, and the multiple piston tubes located in the cavity have the same height. The multiple piston tubes located in the water filtration chamber have different lengths but the same height. The piston pad enables the piston tube to maintain airtightness.

[0019] Furthermore, the water filtration component includes a plurality of transverse grooves disposed at the bottom of the receiving pile, a longitudinal groove disposed at the bottom of the receiving pile, and a drain outlet disposed in the longitudinal groove;

[0020] Furthermore, all of the aforementioned transverse grooves are connected to the longitudinal grooves;

[0021] Furthermore, the long side direction of the transverse groove is defined as the first direction, the long side direction of the longitudinal groove is defined as the second direction, the cross-sections of the bottom surfaces of the transverse groove and the longitudinal groove along the first direction both show a gradually decreasing trend, and the cross-sections of the bottom surfaces of the transverse groove and the longitudinal groove along the second direction are on the same horizontal line.

[0022] Furthermore, the flow storage component includes a flow distribution box disposed on the drain pipe, a flow storage component disposed within the flow distribution box, and a filter component disposed within the flow distribution box.

[0023] Furthermore, the flow storage assembly includes a flow storage shaft disposed in the flow distribution box, a rotating roller disposed on the flow storage shaft, a flow storage wheel disposed on the rotating roller, and a water storage tank disposed on the flow storage wheel;

[0024] Furthermore, when the water storage tank is full of water, it can drive the storage wheel to rotate.

[0025] Furthermore, the filtration assembly includes a sieve platform disposed on the distribution box, a plurality of filter holes disposed on the inclined surface of the sieve platform, and a through-hole disposed at the bottom of the sieve platform;

[0026] Furthermore, the sieve platform is hollow, and the filter holes allow water to pass through while keeping mud out.

[0027] Furthermore, the test methods include full-pile test methods and half-pile test methods;

[0028] Furthermore, the whole-pile test method includes the following steps:

[0029] (1) PVC pipes were buried as piles within the test area;

[0030] (2) Fill the area around the PVC pipe with soil to ensure close contact between it and the surrounding foundation soil;

[0031] (3) Install the test equipment and sensors in preparation for the pile test;

[0032] (4) Gradually apply vertically downward loads to simulate the loads that piles experience in actual engineering projects;

[0033] (5) After the load is applied, the PVC pipe is gradually pulled out, and the deformation of the pile and the response of the soil are observed.

[0034] (6) Control the moisture and temperature conditions during the experiment to simulate the effects under actual environmental conditions;

[0035] (7) Maintain a certain load level and observe the deformation of the pile and the response of the soil;

[0036] (8) Conduct hot and cold cycles to simulate engineering environments under different temperature conditions;

[0037] (9) Apply a certain load level again and observe the response of the pile body under temperature change;

[0038] (10) Record and analyze various data through the hollow monitoring component to obtain the performance parameters of the pile body and soil.

[0039] Furthermore, the half-pile test method includes the following steps:

[0040] Based on the test requirements and objectives, design the parameters, equipment, and monitoring scheme for the semi-pile test;

[0041] Install the half-pile components according to the design requirements, including reinforcing bars, half-pile heads, etc.

[0042] Bury PVC pipes or other test pipes into the ground and connect them to the semi-pile fittings;

[0043] Backfill with soil around the PVC pipe to ensure the stability of the semi-pile device;

[0044] Prepare the piles, including the pile driver and related equipment for the test.

[0045] Lowering: Using a pile driver, the semi-pile device is lowered to the required depth;

[0046] Pull out the casing slowly, ensuring the integrity of the half-pile device;

[0047] Start video recording by activating the monitoring camera in the hollow monitoring component to record the test process for subsequent analysis;

[0048] Water and temperature control are used to regulate the water flow and temperature during the test to simulate the actual engineering environment.

[0049] Force control involves applying or measuring the magnitude of force on a semi-pile device using force sensors and other equipment.

[0050] Thermal cycling: The test device is subjected to thermal cycling to simulate actual usage conditions;

[0051] Re-force control involves applying or measuring the force on the semi-pile device again to determine its performance under different environments.

[0052] The monitoring and feedback system uses hollow monitoring components to monitor the data from the half-pile test in real time and provide feedback to evaluate the performance and stability of the half-pile device.

[0053] Beneficial effects: Through the interaction of the water separation plate, developing plate and partition plate in the developing mechanism of this device, the deformation of the pile, mud skin and soil in the energy pile experiment is quantified and transformed by multiple piston tubes of the same height but different lengths at the pressure sensing element. This makes the developing pen leave a trajectory change at the developing plate, thus making the deformation process in the pile visible. It is beneficial for the experimenters to observe the deformation changes more intuitively, quantify the deformation process and make the experimental results more accurate. Attached Figure Description

[0054] Figure 1 This is a cross-sectional schematic diagram of the piston tube portion of the energy pile test device that takes into account the mud skin effect of the present invention.

[0055] Figure 2 This is a cross-sectional view and enlarged schematic diagram of the internal structure of the energy pile containing the energy pile, which takes into account the mud cake effect of the present invention.

[0056] Figure 3 This is a schematic diagram of the overall internal structure of the accommodating pile described in the energy pile test device of the present invention, which considers the mud skin effect.

[0057] Figure 4 This is a schematic cross-sectional view of the anti-tilting cylinder structure at the anti-tilting component of the energy pile test device considering the mud skin effect of the present invention.

[0058] Figure 5 This is an enlarged schematic diagram of the internal structure of the accommodating pile and the water control mechanism of the energy pile test device considering the mud skin effect of the present invention.

[0059] Figure 6 This is a cross-sectional schematic diagram of the flow distribution box at the flow storage component of the energy pile test device considering the mud skin effect of the present invention.

[0060] Figure 7 This is a schematic diagram of the cross-sectional structure of the diversion box and the cross-sectional structure of the sieve corner platform of the energy pile test device considering the mud skin effect of the present invention. Detailed Implementation

[0061] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings.

[0062] This invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of this invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this invention. In actual fabrication, the three-dimensional spatial dimensions of length, width, and depth should be included. Example

[0063] Reference Figures 1-4 An energy pile test device considering the mud skin effect includes a pile body mechanism 100, including a receiving pile 101, a hollow monitoring component 102 disposed in the receiving pile 101, and a reserved component disposed on the receiving pile 101. The hollow monitoring component 102 can visualize the deformation transformation process inside the receiving pile 101, which is convenient for staff to conduct experimental observation, thereby achieving the remote monitoring effect that traditional monitoring cannot achieve.

[0064] The developing mechanism 200 includes a developing component 201 disposed within a reserved component and a responding component 202 disposed within a receiving pile 101. The arrangement of the developing component 201 and the responding component 202 in the developing mechanism 200 transforms the deformation process within the receiving pile 101 into a more intuitive form; and,

[0065] The water control mechanism 300 includes a water filter component 301 installed in the receiving pile 101, a drain pipe 302 installed on the receiving pile 101, and a flow storage component 303 installed on the drain pipe 302. The internal water content is controlled by the internal water control mechanism 300, thereby reducing its impact on the experimental results.

[0066] The outer wall of the receiving pile 101 can be welded with stiffening ribs. Jacks can be installed at the top and bottom of the receiving pile 101. Insulation cotton is also installed on the outside of the receiving pile 101. A thermometer is installed inside the receiving pile 101. In addition, an adjustable height support frame is installed outside the receiving pile 101. A circulating water device can be installed on the top cover plate and the surrounding area. An insertable conduit is also installed to control the water inlet and outlet. Temperature can also be changed through this. The insulation cotton can reduce heat loss and ensure a relatively stable ambient temperature. The hole specifications are set with the top hole being smaller and the bottom hole being larger to form a water control system to ensure seepage balance. A sand mesh is also installed on its outside.

[0067] Specifically, the hollow monitoring component 102 includes a side mounting platform 102a installed inside the receiving pile 101, and a monitoring camera 102b installed on the side mounting platform 102a. The monitoring camera 102b can transmit image and video information to the terminal to achieve real-time monitoring of the deformation process inside the receiving pile 101, thereby making the monitoring results more accurate and the experimental process more controllable.

[0068] Furthermore, the reserved components include a developing plate 103a, a partition plate 103b, and a water separating plate 103g installed inside the receiving pile 101. The developing plate 103a, partition plate 103b, and water separating plate 103g divide the receiving pile 101 into a test chamber 103c, a water filtering chamber 103d, a monitoring chamber 103e, and a cavity 103f. The water separating plate 103g can allow water to seep in. The developing plate 103a is made of transparent acrylic sheet, and coordinate points are drawn on the developing plate 103a. By marking coordinate points on the developing plate 103a, the deformation process inside the receiving pile 101 can be observed more intuitively, and the deformation process can be traced.

[0069] Furthermore, the developing component 201 includes a stand 201a disposed in the cavity 103f, an anti-tilt assembly 201b disposed on the stand 201a, and a developing pen 201c disposed on the anti-tilt assembly 201b; the anti-tilt assembly 201b includes an anti-tilt cylinder 201b-1 disposed on the stand 201a, a telescopic spring 201b-2 disposed in the anti-tilt cylinder 201b-1, a stop plate 201b-3 connected to one end of the telescopic spring 201b-2, wherein the stop plate 201b-3 is slidably connected to the inner wall of the anti-tilt cylinder 201b-1, and a plurality of limiting blocks 201b-4 disposed in the anti-tilt cylinder 201b-1; The developing pen 201c uses a fluorescent pen. The abutment plate 201b-3 has the same inner diameter as the anti-tilt cylinder 201b-1. Multiple limit blocks 201b-4 are symmetrically arranged inside the anti-tilt cylinder 201b-1. The specifications of the developing pen 201c are compatible with the limit blocks 201b-4. The anti-tilt cylinder 201b-1 is designed to prevent the developing pen 201c from shaking or shifting during use, thus preventing the drawn trajectory from becoming jittery. The telescopic spring 201b-2 is designed to prevent the developing pen 201c from shortening after wear during use, which would cause the developing pen to fail to develop. This design ensures that the developing component 201 can operate smoothly.

[0070] More specifically, the response component 202 includes multiple sets of piston tubes 202a disposed in the water filtration chamber 103d, and pressure-sensing components 202b disposed within the piston tubes 202a. The pressure-sensing components 202b include a suction rod 202b-1 disposed within the piston tubes 202a, a response rod 202b-2 disposed within the piston tubes 202a, and piston pads 202b-3 disposed at both ends of the piston tubes 202a. The suction rod 202b-1 is connected to the bottom of the water separation plate 103g, and the response rod 202b-2 is connected to the bottom of the support platform 201a. The piston tubes 202a extend through the partition into the cavity 103f. The multiple piston tubes 202a located in the cavity 103f have the same height, while the multiple piston tubes 202a located in the water filtration chamber 103d have different lengths but the same height. The piston pads 202b-3 ensure the airtightness of the piston tubes 202a. The water separation plate 103g... After the soil is drained, it undergoes initial deformation due to its weight change. At this time, the pressure on the suction rod 202b-1 changes, and the suction rod 202b-1 at different positions will deform differently, resulting in the developing pen 201c at the developing component 201 leaving different tracks on the developing plate 103a, representing the deformation at different positions. After the drainage is completed, the changes in soil, mud skin, and gaps between piles will also change the load-bearing capacity of the drainage plate 103g, causing the suction rod 202b-1 to rise or fall differently, thus again causing the developing pen 201c to leave different tracks on the developing plate 103a. The monitoring camera 102b at the hollow monitoring component 102 then monitors in real time. By comparing the tracks at each time period, a deformation trajectory diagram can be drawn, which facilitates intuitive observation of the experiment and makes a more accurate experimental judgment.

[0071] Operation process: Stiffening ribs are installed according to different environmental conditions. These ribs ensure a reasonable distribution of longitudinal forces on the beam, preventing localized damage and improving its load-bearing capacity and seismic performance. Double-ended jacks simulate reciprocating loads, preventing tensile stress. An environmental temperature control system is installed around the receiving pile 101. Different water-cooling circulation devices are installed on the top and surrounding steel plates, controlling the ambient temperature by inputting water at different temperatures. When deformation occurs inside the receiving pile 101, different forces act on different positions on the water-distributing plate 103g. This causes different pressures on the suction rods 202b-1 in the response components 202 at different positions. The airtight design inside the piston tube 202a causes the piston pads 202b-3 at both ends to push and pull against each other, thereby driving the response rods 202b- 2. The device rises or falls, allowing the developing pen 201c at the developing component 201 to leave a trace on the developing plate 103a. The tracking camera 102b in the hollow monitoring component 102 then monitors the trace on the developing plate 103a, enabling direct observation of deformation. By converting the difficult-to-observe deformation of mud and soil into an easily observable graphic trajectory, during this conversion, the abutment plate 201b-3, under the action of the telescopic spring 201b-2, holds the developing pen 201c against the developing plate 103a, causing it to leave a fluorescent trace. The abutment plate 201b-3 can only move up to the limiting block 201b-4 to prevent the developing pen 201c from going outside the anti-tilt cylinder 201b-1, thus avoiding the developing pen from falling off. The fluorescent mark left by the developing pen 201c can deepen the mark when it is repeatedly stroked. Example

[0072] Reference Figures 1-7 This embodiment differs from the first embodiment in that the water filtration component 301 includes multiple transverse grooves 301a disposed at the bottom of the receiving pile 101, a longitudinal groove 301b disposed at the bottom of the receiving pile 101, and a drain outlet 301c disposed in the longitudinal groove 301b; the multiple transverse grooves 301a are all connected to the longitudinal groove 301b; the long side direction of the transverse groove 301a is set as the first direction, and the long side direction of the longitudinal groove 301b is set as the second direction. The cross-sections of the bottom surfaces of the transverse grooves 301a and the longitudinal groove 301b along the first direction are all gradually decreasing in trend, and the cross-sections of the bottom surfaces of the transverse grooves 301a and the longitudinal groove 301b along the second direction are all on the same horizontal line. By setting different horizontal lines here, the internal water flow can be collected at the longitudinal groove 301b, and then flow from the drain outlet 301c to the drain pipe 302, avoiding the internal water accumulation that cannot be discharged.

[0073] Specifically, the flow storage component 303 includes a flow distribution box 303a installed on the drain pipe 302, a flow storage component 303b installed in the flow distribution box 303a, and a filter distribution component 303c installed in the flow distribution box 303a.

[0074] Furthermore, the flow storage component 303b includes a flow storage shaft 303b-1 disposed in the flow distribution box 303a, a rotating roller 303b-2 disposed on the flow storage shaft 303b-1, a flow storage wheel 303b-3 disposed on the rotating roller 303b-2, and a water storage tank 303b-4 disposed on the flow storage wheel 303b-3; when the water storage tank 303b-4 is full of water, the flow storage wheel 303b-3 can rotate.

[0075] Furthermore, the filtration assembly 303c includes a sieve platform 303c-1 disposed on the diversion box 303a, multiple filter holes 303c-2 disposed on the inclined surface of the sieve platform 303c-1, and a through-hole 303c-3 disposed at the bottom of the sieve platform 303c-1. The sieve platform 303c-1 is hollow, and the filter holes 303c-2 allow water to flow through while isolating mud. The water storage tank 303b-4 allows the storage wheel 303b-3 to rotate with a delay, and ensures the impact force when the accumulated water flows down. This achieves the purpose of drainage while also flushing away residual impurities or mud at the filter holes 303c-2 on the sieve platform 303c-1, flushing them into or below the sieve platform 303c-1, so that the entire drainage process can operate smoothly without being affected.

[0076] The rest of the structure is the same as in Example 1.

[0077] Operation process: When excess water on the water separation plate 103g falls through the water separation plate 103g during the above process, most of it falls on the horizontal groove 301a, and a small amount falls into the vertical groove 301b. Due to the different horizontal lines of the cross sections of the horizontal groove 301a and the vertical groove 301b, the water flow will eventually accumulate in the vertical groove 301b, and then fall from the drain pipe 302 into the distribution box 303a, and then into the water storage tank 303b-4 on the storage wheel 303b-3. The delayed rotation design ensures that the scouring force of the water flow falling onto the screening platform 303c-1 is guaranteed, thereby avoiding the blockage of the filter holes 303c-2 on the screening platform 303c-1. In the subsequent scouring process, the water flow and some impurities will be discharged through the opening 303c-3 inside the screening platform 303c-1. Example

[0078] Reference Figures 1-7This embodiment differs from the above embodiments in that it is a test method for energy piles considering the mud cake effect. The test method includes a full-pile test method and a half-pile test method. The full-pile test method includes the following steps: burying a PVC pipe as a pile in the test area; filling the PVC pipe with soil to ensure close contact with the surrounding foundation soil; installing test equipment and sensors for the pile; gradually applying a vertically downward load to simulate the load experienced by the pile in actual engineering; after applying the load, gradually removing the PVC pipe and observing the deformation of the pile and the soil response; controlling the moisture conditions and temperature during the test to simulate the effects under actual environmental conditions; maintaining a certain load level and observing the deformation of the pile and the soil response; conducting thermal cycling to simulate engineering environments under different temperature conditions; applying a certain load level again and observing the pile response under temperature changes; recording and analyzing various data through the hollow monitoring component 102 to obtain the performance parameters of the pile and soil.

[0079] Furthermore, the semi-pile test method includes the following steps: designing the parameters, device, and monitoring scheme for the semi-pile test according to the test requirements and objectives; installing semi-pile accessories, including reinforcing bars, semi-pile heads, etc., according to the design requirements; burying PVC pipes or other test pipes in the ground and connecting them to the semi-pile accessories; backfilling soil around the PVC pipes to ensure the stability of the semi-pile device; the soil backfilling step includes filling soil around the PVC pipes and compacting it to ensure close contact with the surrounding foundation soil; preparing the pile driver and related equipment for the test; lowering the semi-pile device to the required depth using the pile driver; and slowly removing the casing. The test process is carried out to ensure the integrity of the semi-pile device; video recording is enabled by activating the monitoring camera 102b in the hollow monitoring component 102 to record the test process for subsequent analysis; water and temperature control are implemented to control the water flow and temperature during the test to simulate the actual engineering environment; force control is achieved by applying or measuring the force on the semi-pile device using force sensors and other equipment; thermal cycling is performed on the test device to simulate actual usage conditions; re-force control is implemented by applying or measuring the force on the semi-pile device again to determine its performance under different environments; and monitoring feedback is provided by monitoring the semi-pile test data in real time through the hollow monitoring component 102 and providing feedback to evaluate the performance and stability of the semi-pile device.

[0080] The rest of the structure is the same as in Example 2.

[0081] Operational Procedure: During the full-pile test, PVC pipes were buried in the test area as piles; soil was filled around the PVC pipes to ensure close contact with the surrounding foundation soil; test equipment and sensors were installed for the piles; vertically downward loads were gradually applied to simulate the loads experienced by the piles in actual engineering projects; after applying the load, the PVC pipes were gradually removed, and the deformation of the piles and the response of the soil were observed; moisture conditions and temperature were controlled during the test to simulate the effects of the actual environment; a certain load level was maintained, and the deformation of the piles and the response of the soil were observed; the test samples were subjected to thermal cycling to simulate engineering environments under different temperature conditions, and a certain load level was applied again to observe the response of the piles under temperature changes; various data were recorded and analyzed through sensors and monitoring devices to obtain the performance parameters of the piles and soil.

[0082] In the semi-pile test, the test design is first carried out to determine the test parameters, equipment, and monitoring scheme. Then, the semi-pile components, including reinforcing bars and the semi-pile head, are installed. Next, the test tube is buried in the ground and connected to the semi-pile components. After backfilling the soil, the piling machine and related equipment are prepared, and the semi-pile device is lowered to the required depth. Then, the casing is slowly pulled out to ensure the integrity of the semi-pile device. Video recording is started during the test for subsequent analysis and verification of the test results. Actual usage conditions are simulated through water control, temperature control, and force control, and the semi-pile device is subjected to hot and cold cycles. The magnitude of the force applied to or measured on the semi-pile device is assessed using force sensors and other equipment to evaluate its bearing capacity and stability. Finally, the test data is monitored in real time using relevant sensors and monitoring equipment, and feedback is provided to evaluate the performance and stability of the semi-pile device. Through the test method of this invention, the performance and stability of energy pile devices can be comprehensively, accurately, and intuitively evaluated, providing a scientific and reliable basis for the design and application of semi-pile devices in the field of civil engineering.

[0083] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

Claims

1. An energy pile test device considering the mud cake effect, characterized in that: include, The pile structure (100) includes a receiving pile (101), a hollow monitoring component (102) disposed within the receiving pile (101), and a reserved component disposed on the receiving pile (101); and, The developing mechanism (200) includes a developing component (201) disposed within the reserved component, and a responding component (202) disposed within the receiving pile (101); and, The water control mechanism (300) includes a water filter component (301) disposed in the receiving pile (101), a drain pipe (302) disposed on the receiving pile (101), and a flow storage component (303) disposed on the drain pipe (302). The outer wall of the receiving pile (101) can be welded with stiffening ribs, and jacks can be installed at the top and bottom of the receiving pile (101). Insulation cotton is also installed on the outside of the receiving pile (101), and a thermometer is installed inside the receiving pile (101). The hollow monitoring component (102) includes a side mounting platform (102a) disposed within the receiving pile (101) and a monitoring camera (102b) disposed on the side mounting platform (102a). The monitoring camera (102b) is capable of transmitting image and video information to the terminal; The reserved components include a developing plate (103a), a partition plate (103b), and a water separating plate (103g) disposed inside the receiving pile (101). The developing plate (103a), the partition plate (103b), and the water separating plate (103g) divide the receiving pile (101) into a test chamber (103c), a water filtering chamber (103d), a monitoring chamber (103e), and a cavity (103f). The water separation plate (103g) is able to allow water to flow through it, and the developing plate (103a) is made of transparent acrylic sheet with coordinate points drawn on it. The developing component (201) includes a stand (201a) disposed in the cavity (103f), an anti-tilt assembly (201b) disposed on the stand (201a), and a developing pen (201c) disposed on the anti-tilt assembly (201b). The anti-tilt assembly (201b) includes an anti-tilt cylinder (201b-1) disposed on the frame (201a), a telescopic spring (201b-2) disposed inside the anti-tilt cylinder (201b-1), a stop plate (201b-3) connected to one end of the telescopic spring (201b-2), and a plurality of limiting blocks (201b-4) disposed inside the anti-tilt cylinder (201b-1). The developing pen (201c) is a fluorescent pen. The abutment (201b-3) has the same inner diameter as the anti-tilt cylinder (201b-1). The plurality of limiting blocks (201b-4) are symmetrically arranged inside the anti-tilt cylinder (201b-1). The specifications of the developing pen (201c) are compatible with the limiting blocks (201b-4).

2. The energy pile test device considering mud cake effect as described in claim 1, characterized in that: The response component (202) includes multiple sets of piston tubes (202a) disposed in the water filter chamber (103d) and a pressure sensing component (202b) disposed in the piston tubes (202a). The pressure-sensitive component (202b) includes a suction rod (202b-1) disposed in the piston tube (202a), a response rod (202b-2) disposed in the piston tube (202a), and piston pads (202b-3) disposed at both ends of the piston tube (202a). The suction rod (202b-1) is connected to the bottom of the water separation plate (103g), and the response rod (202b-2) is connected to the bottom of the stand (201a). The piston tube (202a) extends through the partition into the cavity (103f). The multiple piston tubes (202a) located in the cavity (103f) have the same height. The multiple piston tubes (202a) located in the water filter cavity (103d) have different lengths but the same height. The piston pad (202b-3) can keep the piston tube (202a) airtight.

3. The energy pile test device considering the mud cake effect as described in claim 2, characterized in that: The water filtration component (301) includes a plurality of transverse grooves (301a) disposed at the bottom of the receiving pile (101), a longitudinal groove (301b) disposed at the bottom of the receiving pile (101), and a drain outlet (301c) disposed in the longitudinal groove (301b). All of the transverse grooves (301a) are connected to the longitudinal grooves (301b); The long side direction of the transverse groove (301a) is set as the first direction, and the long side direction of the longitudinal groove (301b) is set as the second direction. The cross-sections of the bottom surfaces of the transverse groove (301a) and the longitudinal groove (301b) along the first direction both show a gradually decreasing trend, and the cross-sections of the bottom surfaces of the transverse groove (301a) and the longitudinal groove (301b) along the second direction are on the same horizontal line.

4. The energy pile test device considering mud cake effect as described in claim 3, characterized in that: The flow storage component (303) includes a flow distribution box (303a) disposed on the drain pipe (302), a flow storage component (303b) disposed in the flow distribution box (303a), and a filter component (303c) disposed in the flow distribution box (303a).

5. The energy pile test device considering the mud cake effect as described in claim 4, characterized in that: The flow storage assembly (303b) includes a flow storage shaft (303b-1) disposed in the flow distribution box (303a), a rotating roller (303b-2) disposed on the flow storage shaft (303b-1), a flow storage wheel (303b-3) disposed on the rotating roller (303b-2), and a water storage tank (303b-4) disposed on the flow storage wheel (303b-3). When the water storage tank (303b-4) is filled with water, the flow storage wheel (303b-3) can rotate.

6. The energy pile test device considering the mud cake effect as described in claim 5, characterized in that: The filtration assembly (303c) includes a sieve platform (303c-1) disposed on the distribution box (303a), a plurality of filter holes (303c-2) disposed on the inclined surface of the sieve platform (303c-1), and a through-hole (303c-3) disposed at the bottom of the sieve platform (303c-1). The sieve angle platform (303c-1) is hollow, and the filter hole (303c-2) allows water to pass through while isolating soil.

7. A test method for energy piles considering the mud cake effect, using the apparatus described in any one of claims 2-6, characterized in that: The test methods include full-pile test methods and half-pile test methods; The whole-pile test method includes the following steps: (1) PVC pipes were buried as piles within the test area; (2) Fill the area around the PVC pipe with soil to ensure close contact between it and the surrounding foundation soil; (3) Install the test equipment and sensors in preparation for the pile test; (4) Gradually apply vertically downward loads to simulate the loads that piles experience in actual engineering projects; (5) After the load is applied, the PVC pipe is gradually pulled out, and the deformation of the pile and the response of the soil are observed. (6) Control the moisture and temperature conditions during the experiment to simulate the effects under actual environmental conditions; (7) Maintain a certain load level and observe the deformation of the pile and the response of the soil; (8) Conduct hot and cold cycles to simulate engineering environments under different temperature conditions; (9) Apply a certain load level again and observe the response of the pile body under temperature change; (10) Record and analyze various data through the hollow monitoring component (102) to obtain the performance parameters of the pile body and soil; The half-pile test method includes the following steps: Based on the test requirements and objectives, design the parameters, equipment, and monitoring scheme for the semi-pile test; Install the half-pile components according to the design requirements, including reinforcing bars, half-pile heads, etc. Bury PVC pipes or other test pipes into the ground and connect them to the semi-pile fittings; Backfill with soil around the PVC pipe to ensure the stability of the semi-pile device; Prepare the piles, including the pile driver and related equipment for the test. Lowering: Using a pile driver, the semi-pile device is lowered to the required depth; Pull out the casing slowly, ensuring the integrity of the half-pile device; Start video recording by turning on the monitoring camera (102b) in the hollow monitoring component (102) to record the test process for subsequent analysis; Water and temperature control are used to regulate the water flow and temperature during the test to simulate the actual engineering environment. Force control involves applying or measuring the magnitude of force on a semi-pile device using force sensors and other equipment. Thermal cycling: The test device is subjected to thermal cycling to simulate actual usage conditions; Re-force control involves applying or measuring the force on the semi-pile device again to determine its performance under different environments. The monitoring and feedback mechanism uses a hollow monitoring component (102) to monitor the data from the half-pile test in real time and provide feedback to evaluate the performance and stability of the half-pile device.

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