Composite foundation of construction waste recycled aggregate and preparation method thereof

Abstract

The application relates to the technical field of building foundations, in particular to a composite foundation of building waste recycled aggregate, which comprises a pile body arranged on a foundation layer, the pile body is composed of a pile cylinder, a detection assembly and a sensing assembly; the pile cylinder comprises a water collecting cover, a water lifting pipe fixed to the end of the water collecting cover and a drainage pipe fixed to the other end of the water lifting pipe, the detection assembly is located at the end of the drainage pipe; the detection assembly comprises a shell, a floating plate slidingly arranged in the shell and an indicating rod mounted on the top side of the floating plate. The composite foundation of building waste recycled aggregate and the preparation method thereof can realize real-time monitoring of the foundation state, the water level, the pressure and other key parameters in the composite foundation can be monitored in real time through cooperation of the detection assembly and the sensing assembly, abnormal conditions possibly occurring in the foundation, such as settlement and water accumulation, can be found in time, a basis for taking corresponding maintenance and repair measures is provided, and the safe operation of the foundation is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of building foundations, in particular to a composite foundation of building waste recycled aggregate and a preparation method thereof. BACKGROUND

[0002] The building waste recycled aggregate is obtained by crushing and processing waste concrete blocks generated in the demolition of buildings, pavement renovation, concrete production, engineering construction and other conditions. The recycled coarse aggregate is obtained by crushing and processing the waste concrete blocks, and has a nominal particle size of greater than or equal to 5 mm and less than 40 mm. The recycled coarse aggregate can partially replace natural aggregate for the production of concrete. The mechanical properties of the recycled concrete obtained by replacing a small part of the natural aggregate are similar to those of ordinary concrete. The carrier is a load carrier composed of concrete, rammed filling material and extruded soil body. The carrier pile is a pile composed of a concrete pile body and a carrier. The composite carrier pile is a carrier pile made of building waste by crushing and screening, and then replacing concrete. The carrier pile is widely used.

[0003] According to the search, the patent document with the publication number CN110424366B discloses a composite foundation using building waste aggregate. The pile body is arranged in the foundation at intervals. The pile body not only has a strong drainage function, but also is subjected to reinforcement treatment. Through the synergistic effect of drainage reinforcement and physical reinforcement of the foundation, the bearing capacity and stability of the foundation are effectively improved.

[0004] According to the related technology described above, the inventors found that at least the following problem exists in the technology. The application cannot obtain the working state of the underground water level and the drainage system in real time. The pile body only has passive drainage and bearing functions, and has no active action or feedback. Therefore, the composite foundation of building waste recycled aggregate and the preparation method thereof are proposed to solve the problems described above. SUMMARY

[0005] In view of the deficiencies of the prior art, the application provides a composite foundation of building waste recycled aggregate and a preparation method thereof, which has the advantages of active sensing and regulation, simultaneous operation of alarm and sampling, and the like. The problems described in the background art are solved.

[0006] The application provides a composite foundation of building waste recycled aggregate, which comprises a pile body arranged on a foundation layer. The pile body is composed of a pile cylinder, a detection assembly and a sensing assembly.

[0007] The pile cylinder comprises a water collecting cover, a water lifting pipe fixed to the end of the water collecting cover and a drainage pipe fixed to the other end of the water lifting pipe. The detection assembly is located at the end of the drainage pipe.

[0008] The detection assembly comprises a shell, a floating plate slidingly arranged inside the shell, and an indicating rod mounted on the top side of the floating plate and extending outside the shell, and a sampling structure is arranged inside the shell and cooperates with the sensing assembly;

[0009] The sampling structure comprises an outer cylinder, an inner cylinder rotatably arranged inside the outer cylinder, and a cover sleeved on the outer surface of the top end of the inner cylinder, and water inlets are formed in the inner sides of the outer cylinder and the inner cylinder, wherein a resilient plug is elastically arranged inside the water inlet on the inner cylinder, a second return spring is arranged between the cover and the inner cylinder, a guide is arranged inside the cover and cooperates with the floating plate, and the sensing assembly is arranged between the cover and the shell;

[0010] The guide comprises a guide rod mounted inside the cover, and a guide cam is rotatably mounted on the end of the guide rod, and a cam guide groove is arranged around the outer surface of the inner cylinder, and the guide cam and the cam guide groove rollingly cooperate.

[0011] Optionally, the water collecting cover, the water lifting pipe, the drain pipe, and the shell are communicated, and the water collecting cover, the water lifting pipe, and the drain pipe are arranged in sequence from bottom to top, the shape of the water collecting cover is trumpet-shaped with the bottom end of the drain pipe, and the diameter of the water lifting pipe is smaller than that of the drain pipe.

[0012] Optionally, a partition frame is detachably mounted inside the drain pipe, the partition frame is hollow, the outer surface of the indicating rod is provided with scale lines, and a first return spring is mounted on the outer surface of the indicating rod and fixed to the top side of the shell.

[0013] Optionally, guide rods are mounted between the upper and lower inner walls of the shell and penetrate the inside of the floating plate, the number of the guide rods, the indicating rod, and the first return spring is two, and the sensing assembly comprises a touch plate fixed to the top side of the cover and a pressure sensing module fixed to the inner top wall of the shell.

[0014] Optionally, the inner side of the inner cylinder and the inner side of the outer cylinder are hollow, a pipe body is mounted on the bottom end of the inner cylinder and rotatably connected to the inner bottom wall of the outer cylinder, a receiving groove is formed in the inner side of the cover and communicated with the bottom side, and the top end of the inner cylinder extends into the inside of the receiving groove.

[0015] Optionally, the two ends of the second return spring are rotatably connected to the top side of the inner cylinder and the inner bottom wall of the receiving groove, the inner cylinder penetrates the inside of the floating plate, and the outer cylinder is mounted on the bottom side of the floating plate through bolts.

[0016] Optionally, the inner part of the inner cylinder is provided with a filter plate, and the one end of the elastic plug close to the outer cylinder is provided with a spherical surface, and the filter plate is lower than the water inlet hole.

[0017] Optionally, the top end of the drain pipe extends to the surface of the foundation layer, the top side of the shell is provided with an indicating structure used in cooperation with the floating plate, the indicating structure comprises a frame body bolted to the top side of the shell, an indicating disc fixed to the top side of the frame body, a rotating shaft rotatably installed in the inner part of the indicating disc, a pointer installed at the top end of the rotating shaft, and a transmission member arranged at the bottom end of the rotating shaft, the transmission member comprises a guide seat fixed to the top end of one of the indicating rods, the bottom end of the rotating shaft is fixed with a gear, and the outer part of the gear is engaged with a gear plate.

[0018] Optionally, the gear plate is in sliding connection with the frame body, the guide seat is internally provided with a guide groove with an inclined shape, the guide groove is internally provided with a guide wheel in rolling connection, the inner side of the guide wheel is rotatably installed with a guide wheel shaft, and the other end of the guide wheel shaft is installed with a connecting plate, and the connecting plate is in fixed connection with the gear plate.

[0019] Another problem to be solved by the present application is to provide a composite foundation preparation method of construction waste recycled aggregate, comprising the following steps:

[0020] S1: construction preparation

[0021] S1-1, site leveling and surveying: cleaning the construction site, conducting geological survey, and determining the position of the aquifer, soil condition and underground water level;

[0022] S1-2, material preparation: construction waste recycled aggregate: crushing, screening and washing the construction waste, removing impurities, and obtaining recycled aggregate with specified particle size gradation;

[0023] S1-3, pile body assembly prefabrication: prefabricating or assembling the pile cylinder components on site;

[0024] S2: hole forming

[0025] S2-1, using a long spiral drill or a vibrating sinking pipe pile machine to drill at the designed pile position, wherein the drilling diameter should be slightly larger than the maximum diameter of the pile cylinder assembly to ensure that the pile cylinder can be smoothly put into the hole;

[0026] S2-2, the drilling depth needs to reach the design elevation to ensure that the water collector can be located in the target aquifer;

[0027] S3: installing the pile body system

[0028] S3-1, hoisting the assembled pile cylinder, vertically and slowly putting it into the hole, ensuring that the water collector reaches the bottom of the hole, and the top end of the drain pipe is slightly higher than the design foundation surface elevation;

[0029] In the annular gap between the pile cylinder and the hole wall, the construction waste recycled aggregate is filled in layers; every certain thickness is filled, and is tamped using a vibrating tamper or other tamping machinery, to ensure that the aggregate is dense and cooperatively stressed with the pile cylinder;

[0030] S4: install the detection and sampling system

[0031] S4-1, install the detection assembly shell of the assembled sampling structure at the top end of the drain pipe, ensure that the connection is sealed well, and the internal water flow channel is communicated;

[0032] S4-2, connect the sensing circuit and install the indicating structure;

[0033] S5: system debugging and operation and maintenance

[0034] S5-1, debugging: as the upper structure is constructed and the load is increased, observe the drainage condition, check whether the movement of the indicating rod and the pointer is flexible and smooth, and verify whether the sensor signal can be normally received.

[0035] In summary, the present application includes at least one of the following beneficial technical effects:

[0036] 1、The installation of the pile body can reinforce the foundation, thereby improving the load capacity and stability of the foundation, and underground water flows into the bottom horn-shaped water collecting cover from all directions under soil pressure, when the water flows through the water lifting pipe with a small diameter, the flow rate is accelerated according to the Venturi effect, is lifted to the drain pipe, and is finally discharged outside the foundation, as the moisture is discharged, the effective stress of the foundation layer increases, so that the foundation layer becomes dense, and the bearing capacity and stability are improved.

[0037] 2、The present application can monitor the state of the foundation in real time, through the cooperation of the detection assembly and the sensing assembly, the water level, pressure and other key parameters in the composite foundation can be monitored in real time, abnormal conditions such as settlement and water accumulation in the foundation can be found in time, and basis for taking corresponding maintenance and repair measures is provided, and the safe operation of the foundation is ensured.

[0038] 3、The present application, through the setting of the sampling structure, can conveniently and accurately sample during the use of the composite foundation, obtain relevant information inside the foundation, provide data support for further analyzing the performance and quality of the foundation, help to optimize the design of the foundation and subsequent construction, since the state of the foundation can be monitored in real time and problems can be found in time, effective maintenance measures can be taken in the early stage of the problem, to avoid the problem from worsening and causing greater loss, thereby reducing the maintenance cost of the composite foundation and improving the economic benefit.

[0039] 4、The application, by the misalignment and alignment of the water inlet holes of the inner cylinder and the outer cylinder, and by the sealing of the elastic plug, realizes the automatic, sealed and quantitative collection of water samples of specific water depth, guarantees the authenticity of the samples, in addition, during the filtration of the traditional static filter plate, impurities will adhere to the surface, which is easy to cause blockage, the rotation of the inner cylinder generates centrifugal force on the liquid inside, the heavier solid particles such as silt in the water are thrown to the inner wall of the inner cylinder by the centrifugal force, thereby reducing the direct burden of the filter plate, effectively delaying the blockage speed of the filter plate, greatly prolonging the maintenance period and service life, and guaranteeing the long-term reliability of the sampling system in harsh water quality environment. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a schematic diagram of the overall structure of the application;

[0041] Figure 2 is a structural front view of the pile body of the application;

[0042] Figure 3 is a structural cross-sectional view of the pile body of the application;

[0043] Figure 4 is a structural cross-sectional view of the detection assembly of the application;

[0044] Figure 5 is a structural cross-sectional view of the shell of the application;

[0045] Figure 6 is a structural cross-sectional view of the sampling structure of the application;

[0046] Figure 7 is an enlarged structural schematic view of A shown in the application Figure 6

[0047] Figure 8 is a structural perspective view of the indication structure of the application;

[0048] Figure 9 is an enlarged structural schematic view of B shown in the application Figure 8

[0049] Figure 10 is a structural cross-sectional view of the indication structure.

[0050] BRIEF DESCRIPTION OF DRAWINGS:

[0051] ​​1. Subgrade; 2. Pile body; 21. Pile cylinder; 211. Water collection cover; 212. Water lifting pipe; 213. Drainage pipe; 214. Isolation frame; 22. Detection component; 221. Housing; 222. Float plate; 223. Indicator rod; 224. First return spring; 225. Guide rod; 23. Contact plate; 24. Pressure sensing module; 3. Sampling structure; 31. Outer cylinder; 32. Inner cylinder; 33. Pipe body; 34. Cover body; 35. Through Filter plate; 36. Storage groove; 37. Second return spring; 38. Water inlet hole; 39. Elastic plug; 391. Spherical surface; 310. Guide rod; 311. Guide cam; 312. Cam guide groove; 4. Indicator structure; 41. Frame; 42. Indicator disc; 43. Rotating rod; 44. Pointer; 45. Guide seat; 46. Tooth plate; 47. Gear; 48. Guide groove; 49. Guide wheel; 410. Guide wheel shaft; 411. Connecting plate. Detailed Implementation

[0052] The following is in conjunction with the appendix Figures 1-10 This application will be described in further detail.

[0053] Example 1, such as Figures 1-7 As shown, a composite foundation using recycled aggregate from construction waste includes piles 2 installed on a base course 1. The piles 2 consist of a pile cylinder 21, a detection component 22, and a sensing component. The pile cylinder 21 includes a water collection hood 211, a water lifting pipe 212 fixed to one end of the water collection hood 211, and a drainage pipe 213 fixed to the other end of the water lifting pipe 212. The detection component 22 is located at the end of the drainage pipe 213. In this embodiment, the detection component 22 includes a housing 221, a float 222 slidably installed inside the housing 221, and an indicator rod 223 installed on the top side of the float 222. The indicator rod 223 extends to the outside of the housing 221. The float 222 inside the housing 221 can accurately respond to changes in water level, and the floating of the float 222 is directly transmitted to the outside through the indicator rod 223. Workers can intuitively and in real-time read groundwater level data next to the housing 221 without the need for complex tools, providing the most direct basis for judging the foundation condition.

[0054] It should be noted that the water collection cover 211, the water lifting pipe 212, the drain pipe 213, and the interior of the shell 221 are all connected, and the water collection cover 211, the water lifting pipe 212, and the drain pipe 213 are arranged sequentially from bottom to top, with the drain pipe 213 having a drain pipe 213 at its top. The water collection cover 211 and the bottom of the drain pipe 213 are arranged in a funnel shape, and the diameter of the water lifting pipe 212 is smaller than the diameter of the drain pipe 213. The funnel-shaped water collection cover 211 increases the water collection area, and the smaller diameter water lifting pipe 212 uses the Venturi effect to increase the water flow speed, which can not only prevent sediment deposition and ensure unobstructed pipe flow, but also improve drainage efficiency.

[0055] It should be noted that the construction waste recycled aggregate filled in the annular space between the pile barrel 21 and the drill hole is a porous medium itself, and the water in the surrounding soil will first flow horizontally into this aggregate layer. Since the inlet of the bottom water collecting cover 211 is a low pressure point, the water entering the aggregate layer will migrate downward under the action of gravity, and finally also flow into the bottom water collecting cover 211, enter the main drainage channel. These compacted recycled aggregates are closely combined with the pile barrel 21 to form a solid composite pile that directly bears the load from the upper structure. The aggregate layer acts as a transition zone that can effectively prevent the surrounding fine-grained soil from directly flowing into the water collecting cover 211, equivalent to a pre-filter to prevent the main drainage channel from being blocked.

[0056] Specifically, the inside of the drainage pipe 213 is detachably installed with a isolation frame 214, the isolation frame 214 is hollow, used for intercepting sundries; the inside of the shell 221 is hollow, the outer surface of the indicating rod 223 is provided with a scale line, and the outer surface of the indicating rod 223 is installed with a first reset spring 224 fixed on the top side of the shell 221, through the first reset spring 224, it can ensure that the indicating rod 223 and the floating plate 222 can be reset reliably when the water level drops, and prepare for the next work, in order to ensure the stable movement of the floating plate 222, the guide rod 225 penetrating through the inside of the floating plate 222 is installed between the upper and lower inner walls of the shell 221, the number of the guide rod 225, the indicating rod 223 and the first reset spring 224 is two.

[0057] In order to improve the service life of the foundation layer 1, the shell 221 is internally provided with a sampling structure 3 used in cooperation with the sensing assembly; the sampling structure 3 comprises an outer cylinder 31, an inner cylinder 32 rotatably arranged inside the outer cylinder 31, and a cover 34 sleeved on the outer surface of the top end of the inner cylinder 32, and the inner cylinders 31 and 32 are both internally provided with water inlet holes 38, wherein the water inlet hole 38 on the inner cylinder 32 is elastically provided with a elastic plug 39, and the end of the elastic plug 39 close to the outer cylinder 31 is provided with a spherical surface 391, which effectively avoids the situation that the inner cylinder 32 is stuck when rotating, and the spherical surface 391 has better fitting effect with the water inlet hole 38; the elastic plug 39 can be connected by spring installation; the second reset spring 37 is arranged between the cover 34 and the inner cylinder 32, the cover 34 is internally provided with a guide piece used in cooperation with the floating plate 222, and the sensing assembly is arranged between the cover 34 and the shell 221; specifically, the sensing assembly comprises a touch plate 23 fixed to the top side of the cover 34 and a pressure sensing module 24 fixed to the inner top wall of the shell 221; it is worth mentioning that the prevention of the traditional foundation is to carry out expensive reinforcement repair after the foundation appears obvious settlement, cracking and other damages, which belongs to after-the-fact remedy, and the system can issue early warning before the problem occurs through the floating plate 222 and the sampling structure 3, and micro changes such as abnormal water level rise and turbid water sample can be captured to realize the effect of early warning sampling, allowing engineers to intervene before the structure is damaged, changing passive rescue to active protection, greatly saving the whole life cycle cost, and each pile body 2 is a data acquisition point, and the long-term accumulated water level fluctuation data, water sample analysis data and the advantages of the foundation health database.

[0058] The guide piece in the embodiment comprises a guide rod 310 installed inside the cover 34, and a guide cam 311 rotatably installed at the end of the guide rod 310, and the inner cylinder 32 is internally provided with a cam guide groove 312 arranged around the outer surface, and the guide cam 311 and the cam guide groove 312 are rollingly matched; wherein the cam guide groove 312 can be composed of two straight grooves and two inclined grooves, the two straight grooves and the two inclined grooves are symmetrically arranged, and the two ends of the two inclined grooves and the two straight grooves are communicated; water can enter through the water inlet holes 38 of the outer cylinder 31 and the inner cylinder 32, and the water pressure overcomes the elastic plug 39 and instantly flows into the inner cylinder 32, as the floating plate 222 rises, the whole sampling structure 3 installed at the bottom of the floating plate 222 is lifted, the guide cam 311 sleeved on the guide rod 310 is lifted with the sampling structure 3, and since the guide cam 311 rolls in the cam guide groove 312 of the inner cylinder 32, it forces the inner cylinder 32 to rotate while rising, when the inner cylinder 32 rotates to a certain angle, the water inlet hole 38 is misaligned, the elastic plug 39 blocks the water inlet hole 38 of the inner cylinder 32 under the action of the elastic force, and the water sample is sealed in the inner cylinder 32, thereby realizing the sampling effect;

[0059] In addition, sampling is performed during the centrifugation process of the inner cylinder 32, which is equivalent to creating a miniature stirring environment inside the sample. This can prevent suspended solids in the water sample from settling when the sample is left to stand, ensuring that the water sample collected at the moment the inlet 38 is opened is more uniform and representative, thus improving the accuracy of subsequent water quality analysis data.

[0060] It should be noted that both the inner cylinder 32 and the outer cylinder 31 are hollow. The bottom end of the inner cylinder 32 is fitted with a tube 33 that is rotatably connected to the inner bottom wall of the outer cylinder 31. A rotating seat connected to the tube 33 via a spline is provided on the inner bottom wall of the outer cylinder 31. A sealing plug is installed inside the tube 33. The inside of the cover 34 has a receiving groove 36 that communicates with the bottom side, and the top end of the inner cylinder 32 extends into the receiving groove 36. A filter plate 35 is installed inside the inner cylinder 32. The filter plate 35 is lower than the water inlet 38 and can effectively intercept large particles such as silt and suspended solids that enter with the water sample. Impurities are removed to prevent them from clogging the internal channels or interfering with subsequent water quality analysis, thereby ensuring the purity and accuracy of the collected water samples. Specifically, the two ends of the second return spring 37 are rotatably connected to the top side of the inner cylinder 32 and the bottom wall of the receiving tank 36, respectively. When the water level drops and the float 222 moves down, it drives the inner cylinder 32 to rotate in the opposite direction and automatically reset to the initial position, preparing for the next sampling cycle and realizing automatic operation. In this application, the inner cylinder 32 penetrates the inside of the float 222, and the outer cylinder 31 is installed on the bottom side of the float 222 by bolts.

[0061] Example 2, as follows Figures 1-3 , Figures 8-10 As shown, the top end of the drain pipe 213 extends to the surface of the base layer 1. The top side of the housing 221 is provided with an indicator structure 4 for use in conjunction with the floating plate 222. The indicator structure 4 includes a frame 41 bolted to the top side of the housing 221, an indicator disk 42 fixed to the top side of the frame 41, a rotating rod 43 rotatably installed inside the indicator disk 42, a pointer 44 installed at the top of the rotating rod 43, and a transmission component provided at the bottom end of the rotating rod 43. The transmission component includes a guide seat 45 fixed to the top end of one of the indicator rods 223. A gear 47 is fixed at the bottom end of the rotating rod 43, and a toothed plate 46 meshes with the outside of the gear 47.

[0062] Specifically, the toothed plate 46 is slidably connected to the frame 41, and the guide seat 45 has an inclined guide groove 48 inside. A guide wheel 49 is rolled inside the guide groove 48, and a guide wheel shaft 410 is rotatably installed on the inner side of the guide wheel 49. A connecting plate 411 is installed at the other end of the guide wheel shaft 410, and the connecting plate 411 is connected and fixed to the toothed plate 46. This application can intuitively display the changes in water level or pressure inside the foundation by the rotation position of the pointer 44 on the indicator disk 42. The staff does not need to perform complex calculations or data analysis. They can quickly and accurately obtain relevant information by simply observing the position of the pointer 44, which improves the efficiency and accuracy of information acquisition.

[0063] Need to explain, indicating structure 4 can also be used with sampling structure 3, by moving the indicating rod 223 lead to the float plate 222 up and down displacement, float plate 222 up and down displacement will lead to sampling structure 3, using the guide cam 311 and cam guide groove 312 rolling cooperation lead to the inner cylinder 32 rotation, and then make the inner cylinder 32 produce a centrifugal action, in order to filter plate 35 better filtering, at this time can be observed by indicating structure 4 pointer 44 centrifugal force and depth.

[0064] Worth mentioning is that the swing amplitude of the pointer 44 is not only indicative of the water level, but also associated with the rotation speed of the inner cylinder 32, i.e. the centrifugal force. When the float plate 222 rises quickly, the transmission system acts rapidly, and the pointer 44 swings violently, indicating a large centrifugal force. Conversely, the action is gentle, and the operator can indirectly determine whether the mechanical transmission is smooth, whether the guide cam 311 and the cam guide groove 312 are stuck, and whether the rotation of the inner cylinder 32 reaches the expected speed by observing the swing of the pointer 44.

[0065] Another problem to be solved by the present application is to provide a method for preparing a composite foundation of construction waste recycled aggregate, comprising the following steps:

[0066] S1: construction preparation

[0067] S1-1, site leveling and survey: clean the construction site, conduct geological survey, and determine the position of the aquifer, soil conditions and groundwater level;

[0068] S1-2, material preparation: construction waste recycled aggregate: crushing, screening and washing of construction waste, removing impurities, and obtaining recycled aggregate with specified particle size gradation;

[0069] S1-3, pile body assembly prefabrication: prefabricating or assembling the components of the pile cylinder 21 at the factory;

[0070] S2: hole forming

[0071] S2-1, use a long spiral drill or a vibrating pipe pile machine to drill at the designed pile position, wherein the drilling diameter should be slightly larger than the maximum diameter of the pile cylinder 21 assembly to ensure that the pile cylinder 21 can be smoothly put into the hole;

[0072] S2-2, the drilling depth needs to reach the design elevation to ensure that the water collector 211 can be located in the target aquifer;

[0073] S3: installing the pile body system

[0074] S3-1, hoist the assembled pile cylinder 21, and put it into the hole vertically and slowly, ensuring that the water collector 211 reaches the bottom of the hole, and the top end of the drain pipe 213 is slightly higher than the design ground surface elevation;

[0075] In the annular gap between the pile barrel 21 and the hole wall, the construction waste recycled aggregate is filled layer by layer; after filling a certain thickness, the vibration rammer or other tamping machinery is used for tamping to ensure that the aggregate is dense and cooperates with the pile barrel 21 to bear stress;

[0076] S4: Install the detection and sampling system

[0077] S4-1, install the detection assembly 22 shell 221 of the assembled sampling structure 3 at the top end of the drain pipe 213, ensure that the connection is sealed well, and the internal water flow channel is connected;

[0078] S4-2, connect the sensing circuit and install the indicating structure 4;

[0079] S5: System debugging and operation

[0080] S5-1, debugging: as the upper structure construction, the load increases, the drainage condition is observed, the movement of the indicating rod 223 and the pointer 44 is checked whether it is flexible and smooth, and it is verified whether the sensor signal can be normally received;

[0081] It should be noted that the water level reading is recorded regularly, the water level is alarmed in time when it is abnormal, and the reason is analyzed, the detection assembly 22 is opened regularly, the inner cylinder 32 is taken out, the collected water sample is sent to the laboratory for chemical analysis, and it is used for long-term foundation health monitoring.

[0082] Combined with the attached Figures 1-10 The working principle of the above embodiment is as follows:

[0083] First, the pressure is applied to the surface of the foundation layer 1, the load of the upper structure is applied to the foundation layer 1, the pore water pressure in the foundation soil is increased, the high-pressure pore water is driven by the pressure difference, and flows to the horn-shaped water collector 211 at the bottom of the pile barrel 21, when the water flows through the water lifting pipe 212 with a smaller diameter, the flow rate is accelerated according to the Venturi effect, and is lifted to the drain pipe 213, and finally is discharged outside the foundation, with the water being discharged, the effective stress of the foundation soil body is increased, so that the foundation soil body becomes dense, the bearing capacity and stability are improved;

[0084] When the water enters the detection assembly 22 shell 221 at the top of the drain pipe 213, the floating plate 222 floats under the action of water buoyancy, the indicating rod 223 is driven by the floating plate 222 to move upward against the elastic force of the first reset spring 224, and by observing the scale line on the indicating rod 223, the height of the current underground water level can be directly read;

[0085] When the float plate 222 floats, the whole sampling structure 3 mounted on the bottom of the float plate 222 is moved up, the guide rod 310 fixed on the shell 221 is not moved, and the guide cam 311 sleeved on the guide rod 310 is moved up with the sampling structure 3, since the guide cam 311 rolls in the cam guide groove 312 of the inner cylinder 32, it forces the inner cylinder 32 to rotate while rising, water can enter through the water inlet hole 38 of the outer cylinder 31 and the inner cylinder 32, the water pressure overcomes the elastic plug 39 to instantaneously rush into the inner cylinder 32, with the float plate 222 rising, when the inner cylinder 32 rotates to a certain angle, the water inlet hole 38 is misaligned, the elastic plug 39 re-seals the water inlet hole 38 of the inner cylinder 32 under the action of the elastic force, and the water sample is sealed in the inner cylinder 32;

[0086] When the float plate 222 floats to a certain height, the touch plate 23 at the top of the sampling structure 3 is pushed to contact the pressure sensing module 24, the pressure sensing module 24 is triggered to send an electric signal to the remote monitoring center through wired or wireless transmission, water level overrun alarm is realized, relevant monitoring is realized, at the same time, through the valve of the drain pipe 213, water is finally discharged from the foundation surface through the drain pipe 213.

[0087] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A composite foundation of construction waste recycled aggregates, characterized in that: The utility model relates to a kind of pile and water level detection device, including the pile body (2) being set on foundation layer (1), the pile body (2) is composed of pile cylinder (21), detection assembly (22) and sensing assembly group; The pile cylinder (21) includes a water collecting cover (211), a water lifting pipe (212) fixed to the end of the water collecting cover (211), and a drain pipe (213) fixed to the other end of the water lifting pipe (212), and the detection assembly (22) is located at the end of the drain pipe (213). The detection assembly (22) includes a housing (221), a floating plate (222) slidingly disposed inside the housing (221), and an indicating rod (223) mounted on the top side of the floating plate (222), the indicating rod (223) extends outside the housing (221), and the housing (221) is provided with a sampling structure (3) for cooperation with the sensing assembly inside; The sampling structure (3) includes an outer cylinder (31), an inner cylinder (32) rotatably disposed inside the outer cylinder (31), and a cover (34) sleeved on the outer surface of the top end of the inner cylinder (32), the inner cylinder (32) and the outer cylinder (31) are both provided with water inlet holes (38) inside, wherein the water inlet hole (38) on the inner cylinder (32) is elastically provided with a elastic plug (39) inside, a second return spring (37) is arranged between the cover (34) and the inner cylinder (32), and the cover (34) is provided with a guide inside for cooperation with the floating plate (222), and the sensing assembly is arranged between the cover (34) and the housing (221); The guide includes a guide rod (310), the guide rod (310) is mounted inside the cover (34), and a guide cam (311) is rotatably mounted on the end of the guide rod (310), the inner cylinder (32) is provided with a cam guide groove (312) around the outer surface, and the guide cam (311) and the cam guide groove (312) are in rolling cooperation.

2. A composite foundation of recycled construction waste aggregates according to claim 1, characterized in that: The water collecting cover (211), the water lifting pipe (212), the drain pipe (213), and the housing (221) are all in communication, and the water collecting cover (211), the water lifting pipe (212), and the drain pipe (213) are arranged in order from bottom to top, the shape of the water collecting cover (211) is trumpet-shaped with the bottom end of the drain pipe (213), and the diameter of the water lifting pipe (212) is smaller than that of the drain pipe (213).

3. A composite foundation of recycled construction waste aggregates according to claim 1, characterized in that: The drain pipe (213) is detachably mounted with a isolation frame (214) inside, the isolation frame (214) is hollow, the housing (221) is hollow, the outer surface of the indicating rod (223) is provided with a scale, and the outer surface of the indicating rod (223) is provided with a first return spring (224) fixed to the top side of the housing (221).

4. A composite foundation of recycled construction waste aggregates according to claim 3, characterized in that: The shell (221) is provided with guide rods (225) penetrating the inside of the floating plate (222), the number of the guide rods (225), the indicating rods (223) and the first reset springs (224) is two, the sensing assembly comprises a touch plate (23) fixed to the top side of the cover (34) and a pressure sensing module (24) fixed to the inner top wall of the shell (221).

5. The composite foundation of recycled construction waste aggregates as claimed in claim 1, wherein: The inner cylinder (32) and the outer cylinder (31) are hollow, the bottom end of the inner cylinder (32) is provided with a pipe body (33) rotationally connected with the inner bottom wall of the outer cylinder (31), the inside of the cover (34) is provided with a receiving groove (36) in communication with the bottom side, and the top end of the inner cylinder (32) extends into the inside of the receiving groove (36).

6. A composite foundation of recycled construction waste aggregates according to claim 5, characterized in that: The two ends of the second reset spring (37) are rotationally connected with the top side of the inner cylinder (32) and the inner bottom wall of the receiving groove (36), respectively, the inner cylinder (32) penetrates the inside of the floating plate (222), and the outer cylinder (31) is mounted on the bottom side of the floating plate (222) by bolts.

7. A composite foundation of recycled construction waste aggregates according to claim 1, characterized in that: The inside of the inner cylinder (32) is provided with a filter plate (35), one end of the elastic plug (39) close to the outer cylinder (31) is provided with a spherical surface (391), and the filter plate (35) is lower than the water inlet hole (38).

8. A composite foundation of recycled construction waste aggregates according to claim 4, characterized in that: The top end of the drain pipe (213) extends to the surface of the foundation layer (1), the top side of the shell (221) is provided with an indicating structure (4) matched with the floating plate (222) for floating cooperation, the indicating structure (4) comprises a frame (41) mounted on the top side of the shell (221), an indicating disc (42) fixed to the top side of the frame (41), a rotating rod (43) rotationally mounted in the inside of the indicating disc (42), a pointer (44) mounted on the top end of the rotating rod (43), and a transmission member arranged on the bottom end of the rotating rod (43), the transmission member comprises a guide seat (45) fixed to the top end of one of the indicating rods (223), the bottom end of the rotating rod (43) is fixed with a gear (47), and the outside of the gear (47) is engaged with a toothed plate (46).

9. A composite foundation of recycled construction waste aggregates according to claim 8, characterized in that: The toothed plate (46) is in sliding connection with the frame (41), the inside of the guide seat (45) is provided with an inclined guide groove (48), the inside of the guide groove (48) is provided with a guide wheel (49) in rolling connection, the inside of the guide wheel (49) is rotationally mounted with a guide wheel shaft (410), the other end of the guide wheel shaft (410) is mounted with a connecting plate (411), and the connecting plate (411) is in fixed connection with the toothed plate (46).

10. A method for preparing a composite foundation of construction waste recycled aggregates, using the composite foundation of construction waste recycled aggregates according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1: construction preparation S1-1, site leveling and survey: clean the construction site, conduct geological survey, and determine the position of the aquifer, soil conditions and underground water level; S1-2, material preparation: building waste recycled aggregate: crushing, screening and washing of building waste, removing impurities, obtaining recycled aggregate with specified particle size gradation; S1-3, pile body assembly prefabrication: prefabricating or assembling the pile cylinder (21) in the factory; S2: hole forming S2-1, use long auger or vibration pipe pile machine to drill at the design pile position, the diameter of the hole should be slightly larger than the maximum diameter of the pile barrel (21) assembly to ensure that the pile barrel (21) can be smoothly put into; S2-2, the drilling depth needs to reach the design elevation to ensure that the water collecting cover (211) can be located in the target aquifer; S3: install the pile body system S3-1, lift the assembled pile barrel (21) and put it into the hole vertically and slowly, make sure the water collecting cover (211) reaches the bottom of the hole, and the top of the drain pipe (213) is slightly higher than the design ground surface elevation; In the annular gap between the pile barrel (21) and the hole wall, fill in the construction waste recycled aggregate layer by layer; after filling a certain thickness, use a vibrating rammer or other compaction machinery to compact, ensure the aggregate is dense and cooperates with the pile barrel (21) to bear the load; S4: install the detection and sampling system S4-1, install the detection assembly (22) shell (221) of the assembled sampling structure (3) at the top of the drain pipe (213), make sure the connection is sealed well and the internal water flow channel is connected; S4-2, connect the sensing circuit and install the indicating structure (4); S5: system debugging and operation and maintenance S5-1, debugging: as the superstructure construction, the load increases, observe the drainage situation, check whether the indicating rod (223) and the pointer (44) move smoothly, and verify whether the sensor signal can be normally received.

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