Foundation treatment rapid drainage pipe network combined structure and construction method

Abstract

The application discloses a kind of ground treatment quick drainage pipe network combination structure and construction method, it is related to ground treatment quick drainage technical field.The ground treatment quick drainage pipe network combination structure includes at least two rows of two columns drainage structures arrayed on the ground, and first drain pipe and second drain pipe are set to adjacent two side edges on the ground;Drainage structure is sequentially arranged with water-permeable component, sealing component and water guide component from bottom to top, water-permeable component is the tubular structure of one end sealing and its inside is provided with water-permeable membrane.In the present application, multiple drainage structures are connected into grid structure and partially inserted into the ground to be treated, so that the inside of the ground is rigidly supported by a more stable structure, reducing the post-construction settlement of the ground, and further improving the bearing capacity of the ground.The water-permeable membrane provided in the drainage structure can prevent particles carried by underground seepage water from entering the drainage structure, and avoid drainage failure or inability to drain due to particle accumulation inside the drainage structure.

Description

Technical Field

[0001] This invention relates to the field of rapid drainage technology for foundation treatment, specifically to a combined structure and construction method for rapid drainage pipe network for foundation treatment. Background Technology

[0002] Foundation treatment is a construction engineering process used to improve the physical properties of soil and foundation to increase their bearing capacity, reduce settlement, and prevent soil erosion and landslides. It typically includes steps such as compaction, drainage, and foundation reinforcement to ensure the soil can support the weight of the building without excessive settlement or problems in adverse weather conditions. Rapid drainage networks are specialized drainage systems designed to quickly remove water from the building area to prevent waterlogging and flooding. They can drain large amounts of water in a short time. The combined structure of foundation treatment and rapid drainage networks is typically used in areas with high soil moisture content or prone to water accumulation. By improving the physical properties of the foundation soil and increasing its bearing capacity, while simultaneously using a rapid drainage system to quickly remove accumulated water, the foundation is prevented from being eroded by water, thus ensuring the safety and stability of the building.

[0003] Chinese patent application number CN201310720910.2 discloses "a method for treating a foundation with permeable components and vacuum preloading, including the following steps: (1) preparing permeable components, the pile body being a hollow pipe pile with a pile cap; (2) dividing the foundation treatment area into blocks, with multiple adjacent blocks forming a zone, and each block being constructed simultaneously during vacuum preloading, with continuous operation between zones; (3) driving the pre-made permeable components into the foundation of the preloading zone; and fully covering the preloading zone with sand pads." (4) Lay out the vacuum pipe network; (5) Lay the sealing membrane in stages on the surface of the leveled sand cushion layer; (6) Dig a sealing trench around the perimeter of the reinforced area; insert the edge of the sealing membrane vertically into the soft soil along the inner wall of the sealing trench and lay it flat at the bottom of the trench; (7) Start vacuuming and cover the pile cap. Because permeable piles have high stiffness and strength and good permeability, the pore water pressure and settlement accumulated during the foundation treatment process are small, which reduces the post-construction settlement of the foundation and also improves the bearing capacity of the foundation.

[0004] The patented solution uses permeable piles with high stiffness and strength, resulting in less pore water pressure and settlement during foundation treatment, thus reducing post-construction settlement and increasing the bearing capacity of the foundation. However, it still has certain limitations. Existing soil foundations are generally filled with sand and gravel to increase their bearing capacity. However, particles smaller than the seepage pores of the permeable components in the sand, gravel, and foundation can enter and accumulate inside the permeable components with groundwater seepage, causing the internal channels of the permeable components to narrow or even completely block, thereby affecting the permeability of the components, especially in areas containing large amounts of fine-grained soil, clay, or other adverse geological conditions. Summary of the Invention

[0005] The main objective of this invention is to provide a combined structure and construction method for rapid drainage pipe network in foundation treatment, so as to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A rapid drainage network combination structure for foundation treatment, characterized in that it includes at least two rows and two columns of drainage structures arrayed on the foundation, and a first drainage pipe and a second drainage pipe disposed on two adjacent sides of the foundation; the ends of two adjacent drainage structures in the same row or column are connected to each other, the first drainage pipe is connected to each drainage structure in the outermost row or column, the second drainage pipe is connected to each drainage structure in the outermost column or row, and one end of the first drainage pipe and one end of the second drainage pipe are connected to an external negative pressure source through a tee joint;

[0008] The drainage structure is provided with a permeable component, a sealing component, and a water guiding component in sequence from bottom to top; the permeable component is a tubular structure sealed at one end, the sealed end of the permeable component extends into the foundation, the open end of the permeable component is connected to one end of the sealing component, and the other end of the sealing component is connected to the water guiding component.

[0009] As a further improvement of the present invention, the permeable component includes a tubular structure and a water guide pipe, a support pipe and a permeable pile stacked layer by layer from the inside to the outside. At least two long support plates are arranged in a ring around the outside of the support pipe along its axis. One end of each support plate in the width direction is connected to the outer wall of the support pipe. The water guide pipe, the support pipe, the permeable pile and one end of each support plate in the same direction are all connected to a wedge.

[0010] As a further improvement of the present invention, the permeable pile includes a concave plate and an arc plate. Each support plate is fitted with a concave plate at one end away from the support pipe. The sides of each pair of adjacent concave plates that are close to each other are respectively connected to the two ends of an arc plate in the circumferential direction. Each arc plate is concentric and coaxial with the support pipe. A preset distance is set between the inner wall of each concave plate and its corresponding support plate, and between the inner wall of each arc plate and the outer wall of the support pipe.

[0011] As a further improvement of the present invention, the permeable pile further includes a permeable membrane, and the inner wall of each concave plate and each arc plate is covered with the permeable membrane; wherein, the walls of the permeable pile and the support pipe are distributed with permeable holes, and the water guide pipe has a water guide hole on the wall near the wedge end.

[0012] As a further improvement of the present invention, one end of the wedge connecting the water guide pipe, the support pipe, the permeable pile, and each support plate is a plane and is consistent with the axial section of the permeable pile. The other end of the wedge is provided with a first tip corresponding to the water guide pipe and a second tip corresponding to each concave plate. The axial cross-sectional area of ​​the first tip and each second tip gradually decreases from the wedge toward the direction away from the water guide pipe.

[0013] As a further improvement of the present invention, the sealing assembly includes a cover plate with a circular hole in the center of the cover plate, the support pipe, the permeable pile, and the end of each support plate away from the wedge are all connected to one end face of the cover plate, and the end of the water guide pipe away from the wedge passes through the circular hole and extends to the other end face of the cover plate.

[0014] As a further improvement of the present invention, the sealing assembly further includes a sealing strip, the cover plate is a rectangular plate, and each side of the cover plate away from the wedge end face has an acute-angle notch. The sides of the two cover plates are joined together and the two acute-angle notches are spliced ​​to form a trapezoidal groove with a wide bottom and narrow opening in the axial section. The sealing strip is a long strip structure formed by connecting the narrow end face of a trapezoidal column to one end face of a rectangular column. The trapezoidal part of the sealing strip is interference-fitted with the trapezoidal groove.

[0015] As a further improvement of the present invention, it also includes an observation assembly, which includes an observation ring, an observation rod, and a partition ring; the end face of the water guiding assembly away from the sealing assembly is connected to the observation ring, one end of the observation rod passes through the observation ring and the water guiding assembly in sequence and extends into the water guiding pipe, and the partition ring is disposed in the water guiding assembly and sleeved on the observation rod.

[0016] As a further improvement of the present invention, the water guiding component is a four-way water pipe, and a branch pipe is provided on each side of the cover plate. The axis of each branch pipe is parallel to the end face of the cover plate away from the water permeable component, and the axis of each branch pipe is perpendicular to the cover plate and its corresponding side.

[0017] A construction method for a rapid drainage pipe network combination structure for foundation treatment, characterized by comprising the following steps:

[0018] S1. Prefabricated drainage structure: A drainage structure that connects permeable components, sealing components, water guiding components and observation components into one unit;

[0019] S2. Zoned treatment of the foundation to be treated: Set up a drainage structure in each zone and insert the permeable component of each drainage structure into the foundation to be treated until the sealing component is close to the foundation surface.

[0020] S3. Connect the drainage structures: The sides of adjacent cover plates that are close to each other are connected by sealing strips, and the branch pipes of adjacent water guiding components that are close to each other are connected by joints. The first drainage pipe and the second drainage pipe are respectively set on the two sides of the foundation to be treated. The first drainage pipe and the second drainage pipe are respectively connected to each water guiding component adjacent to them. The ends of the first drainage pipe and the second drainage pipe that are close to each other are connected to the external negative pressure source through a three-way valve. The remaining unconnected ports are sealed.

[0021] S4. Open each drainage structure: drive each observation rod to expose its corresponding permeable component to the highest level, and then drive each observation rod to retract to a certain distance inside its corresponding permeable component.

[0022] S5. Drainage Action: Control the external negative pressure source to perform drainage action on the foundation to be treated. During the drainage process, pull out the observation rod to check the wetted position to judge the water level change of the permeable component. When the drainage action of each unit is stopped, drive the observation rod corresponding to that area to completely retract into the permeable component.

[0023] The beneficial effects of this invention are:

[0024] In this invention, the star-shaped cylindrical design of the permeable pile increases the contact area with the material inside the foundation to be treated. Multiple permeable components are evenly arranged and inserted into the foundation to be treated. Each adjacent sealing plate is connected by a sealing strip to form a plate-like structure covering the surface of the foundation to be treated. Each adjacent water-conducting component is connected by a joint to form a grid-like pipe network, further increasing the stability of the entire structure. This provides a relatively stable rigid support for the foundation, reducing post-construction settlement and further improving the bearing capacity of the foundation. The permeable membrane between the support pipe and the permeable pile prevents particles carried by the groundwater from entering the interior of the permeable pile, avoiding drainage problems or failure to drain due to particle accumulation. The support plate and permeable pile increase the contact area between the permeable membrane and the groundwater. Multiple sealing caps are connected and cover the surface of the foundation to be treated, further increasing the rate at which groundwater enters the drainage structure. Attached Figure Description

[0025] Figure 1 A three-dimensional structural diagram of a combined structure for rapid drainage pipe network in foundation treatment;

[0026] Figure 2 for Figure 1 A three-dimensional structural diagram of the central drainage structure;

[0027] Figure 3 for Figure 1 A front sectional view of the central drainage structure;

[0028] Figure 4 for Figure 2A top-view cross-sectional view of a permeable component;

[0029] Figure 5 for Figure 2 Enlarged view of A in the middle;

[0030] Figure 6 for Figure 3 Enlarged view of B in the middle;

[0031] Figure 7 for Figure 2 A three-dimensional structural diagram of the central sealing assembly;

[0032] Figure 8 for Figure 3 Enlarged view of C in the middle;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. First drainage pipe; 2. Second drainage pipe; 3. Drainage structure; 31. Permeable component; 311. Water guide pipe; 3111. Water guide hole; 312. Support pipe; 313. Permeable pile; 3131. Concave plate; 3132. Arc plate; 314. Support plate; 315. Wedge; 3151. First tip; 3152. Second tip; 316. Permeable membrane; 317. Permeable hole; 32. Sealing component; 321. Cover plate; 3211. Round hole; 3212. Acute notch; 322. Sealing strip; 33. Water guide component; 331. Branch pipe; 34. Observation component; 341. Observation ring; 342. Observation rod; 343. Partition ring. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0037] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] like Figure 1 As shown, this embodiment provides an example of a rapid drainage pipe network combination structure for foundation treatment. In this embodiment, the rapid drainage pipe network combination structure for foundation treatment includes: a first drainage pipe 1, a second drainage pipe 2, and a drainage structure 3; at least two rows and two columns of drainage structures 3 are arrayed on the foundation to be treated, and the ends of two adjacent drainage structures 3 in the same row or column are connected to each other. The first drainage pipe 1 is connected to each drainage structure 3 in the outermost row or column, and the second drainage pipe 2 is connected to each drainage structure 3 in the outermost column or row. One end of the first drainage pipe 1 and one end of the second drainage pipe 2 are connected to an external negative pressure source through a tee joint.

[0039] Among them, see Figure 2 The drainage structure 3 includes a permeable component 31, a sealing component 32, and a water guiding component 33. The permeable component 31 is a tubular structure sealed at one end. The sealed end of the permeable component 31 extends into the foundation. The open end of the permeable component 31 is connected to one end of the sealing component 32, and the other end of the sealing component 32 is connected to the water guiding component 33.

[0040] Further, see Figure 4The permeable component 31 includes: a water guide pipe 311, a support pipe 312, a permeable pile 313, a support plate 314, and a wedge 315. The water guide pipe 311, the support pipe 312, and the permeable pile 313 are all tubular structures and are stacked in layers from the inside to the outside. At least two long support plates 314 are arranged in a ring around the axis of the water guide pipe 311 between the support pipe 312 and the permeable component 31. One end of each support plate 314 in the width direction is connected to the outer wall of the support pipe 312. A permeable membrane 316 is also provided between the support pipe 312 and the permeable pile 313. One end of the water guide pipe 311, the support pipe 312, the permeable pile 313, and each support plate 314 in the same direction is connected to the wedge 315.

[0041] Further, see Figure 4 The permeable pile 313 includes a concave plate 3131 and an arc plate 3132. The length of each support plate 314 is parallel to the axis of the support pipe 312, and the width of each support plate 314 is perpendicular to the axis of the support pipe 312. A concave plate 3131 is sleeved on the end of each support plate 314 away from the support pipe 312. The sides of the openings of two adjacent concave plates 3131 that are close to each other are respectively connected to the two ends of an arc plate 3132 in the circumferential direction. Each arc plate 3132 is coaxial and concentric with the support pipe 312. A preset distance is set between the inner wall of each concave plate 3131 and the corresponding support plate 314, and between the inner wall of each arc plate 3132 and the outer wall of the support pipe 312.

[0042] Further, see Figure 5 The wedge 315 connects the water pipe 311, the support pipe 312, the permeable pile 313, and one end of each support plate 314 is flat and consistent with the circumferential cross section of the permeable pile 313. The other end of the wedge 315 is provided with a first tip 3151 corresponding to the water pipe 311 and a second tip 3152 corresponding to each concave plate 3131. The axial cross-sectional area of ​​the first tip 3151 and the second tip 3152 gradually decreases from the direction away from the water pipe 311 of the wedge 315, so that the wedge 315 can work better with the permeable pile 313, penetrate the foundation more easily, and extend the permeable component 31 into the place where drainage is needed.

[0043] Further, see Figure 6The permeable component 31 also includes a permeable membrane 316. The gap between the inner wall of each concave plate 3131 and its corresponding support plate 314, and between the inner arc surface of each arc plate 3132 and the outer wall of the support pipe 312, is covered with a permeable membrane 316. The purpose of the permeable membrane 316 is to filter out particulate matter carried in the groundwater seepage, preventing particulate matter from entering and accumulating inside the permeable component 31, thus ensuring the smooth flow of the permeable component 31 and the entire drainage network. Correspondingly, permeable pipes 311, support pipes 312, and permeable piles 313 are all permeable. A permeable hole 317 is provided to allow groundwater to seep into the support pipe 312. A water guide hole 3111 is opened on the wall of the water guide pipe 311 only near the wedge 315. When the pressure inside the water guide pipe 311 is less than the pressure outside the water guide pipe 311, water outside the water guide pipe 311 will enter the water guide pipe 311 through the water guide hole 3111. Applying a certain suction at the end of the water guide pipe 311 away from the water guide hole 3111 can draw the water inside the water guide hole 3111 to the outside of the permeable component 31, thereby realizing the drainage process in the foundation treatment process.

[0044] It should be noted that the preset distance is [5mm, 10mm] so that the permeable membrane 316 can be laid between the permeable pile 313 and the support pipe 312, as well as between each support plate 314. The purpose of increasing the number of concave plates 3131 with the support plates 314 is to increase the contact area between the permeable membrane 316 and the groundwater, thereby increasing the rate at which the groundwater enters the support pipe 312. This design increases the contact area between the outer wall of the permeable pile 313 and the foundation soil, further improving the stability of the foundation.

[0045] Preferably, this embodiment uses six support plates 314, six concave plates 3131, and six arc plates 3132 as the best embodiment.

[0046] For example, the area of ​​the 316 permeable membrane is:

[0047]

[0048] In the above formula, π is the ratio of π to π, d is the outer diameter of the support tube 312, h is the height of the support tube 312 or the permeable membrane 316, N is the number of support plates 314 used, and l is the width of the support plate 314.

[0049] When the outer diameter of the support pipe 312, the height of the support pipe 312, and the width of the support plate 314 are all fixed values, the usable area of ​​the permeable membrane 316 is only related to the change in the number of support plates 314; when the pressure values ​​on both sides of the permeable membrane 316 are fixed, only by changing the contact area between the permeable membrane 316 and the underground seepage water can the efficiency of underground seepage water entering the permeable component 31 be improved.

[0050] Among them, see Figure 7The sealing assembly 32 includes a cover plate 321, with a circular hole 3211 in the middle of the cover plate 321. The support pipe 312, the permeable tube, and the end of each support plate 314 away from the wedge 315 are all connected to one end face of the cover plate 321. The end of the water guide pipe 311 away from the wedge 315 passes through the circular hole 3211 and extends to the other end face of the cover plate 321. The cover plate 321, together with the wedge 315, can increase the stability of the internal structure of the permeable assembly 31 and form a relatively sealed space inside the permeable assembly 31. When the permeable assembly 31 is in operation, the internal components can be well protected.

[0051] Further, see Figure 7 The sealing assembly 32 also includes a sealing strip 322. The cover plate 321 is a rectangular plate. Each side of the cover plate 321 away from the wedge 315 end face has an acute-angled notch 3212. The sides of the two cover plates 321 are joined together and the two acute-angled notches 3212 form a trapezoidal groove with a wide bottom and narrow opening in the axial section. The sealing strip 322 is a long strip structure formed by connecting the narrow end face of a trapezoidal column with one end face of a rectangular column. The trapezoidal part of the sealing strip 322 is interference-fitted with the trapezoidal groove.

[0052] Preferably, the size of the sealing plate is determined according to the spacing between two adjacent drainage structures 3 in the same row or column during construction, that is, the width of the sealing plate is consistent with the spacing between two adjacent drainage structures 3 in the same row or column; when the end faces of two adjacent sealing plates in the same row or column abut against each other, their respective acute-angle notches 3212 are spliced ​​to form a trapezoidal groove with a wide bottom and narrow opening in the axial section. Since the trapezoidal part of the sealing strip 322 is interference-fitted with the trapezoidal groove, the sides of two adjacent cover plates 321 abut against each other and are connected by the sealing strip 322, which can prevent water or air in the foundation from leaking from the joint, and is more conducive to pumping out water in the foundation.

[0053] Among them, see Figure 8 The water guiding component 33 is a four-way water pipe. A branch pipe 331 is provided on each side of the cover plate 321. The axis of each branch pipe 331 is parallel to the end face of the cover plate 321 away from the water-permeable component 31, and the axis of each branch pipe 331 is perpendicular to the cover plate 321 and its corresponding side.

[0054] It should be noted that between two adjacent drainage structures 3 in the same row or column, the branch pipes 331 of the two water guiding components 33 that are close to each other are connected by a joint to form a pipe network structure. The pipe network structure is connected to each permeable component 31. By applying suction force to the pipe network through a negative pressure pump, the groundwater accumulated in each permeable component 31 can be pumped out, thereby realizing the drainage process of the foundation.

[0055] Among them, see Figure 8The foundation treatment rapid drainage pipe network combination structure also includes an observation component 34, which includes an observation ring 341, an observation rod 342, and a partition ring 343. The end face of the water guiding component 33 away from the sealing component 32 is connected to the observation ring 341. One end of the observation rod 342 passes through the observation ring and the water guiding component 33 in sequence and extends into the water guiding pipe 311. The partition ring 343 is set in the cavity of the water guiding component 33 and sleeved on the observation rod 342.

[0056] Preferably, the length of the observation rod 342 is greater than the length of the water guide pipe 311. When one end of the observation rod 342 extends into the water guide pipe 311 and touches the wedge 315, the other end of the observation rod 342 protrudes a distance away from the end of the observation ring 341 away from the water guide assembly 33, so that the observation rod 342 can be manually pulled out. The observation partition ring 343 is made of flexible material and can move on the observation rod 342. Limiting retaining rings are provided near both ends of the observation rod 342 so that the partition ring 343 can move within a certain length range in the axial direction of the observation rod 342. At the same time, a limiting cavity is provided at the top of the internal cavity of the water guide assembly 33 to accommodate the partition ring 343. As the partition ring 343 moves with the observation rod 342, when the partition ring 343 is in the internal cavity or limiting cavity of the water guiding component 33, the internal space of the water guiding pipe 311 is connected to the internal space of the water guiding component 33, and the underground seepage water in the permeable component 31 can be pumped out through negative pressure. When the partition ring 343 is in the water guiding pipe 311, the internal cavity of the water guiding pipe 311 is cut off from the internal space of the water guiding component 33, and the underground seepage water in the permeable component 31 cannot be pumped out. At the same time, when the partition ring 343 is in the limiting cavity, the gap between the observation ring 341 and the observation pipe is blocked by the partition ring 343, so that the internal space of the water guiding component 33 is sealed, preventing the underground seepage water from being exposed through the gap between the observation ring 341 and the observation rod 342 during the drainage process.

[0057] This embodiment provides a construction method for a rapid drainage pipe network combination structure for foundation treatment, which includes the following steps based on the above embodiment:

[0058] S1, Prefabricated drainage structure 3: Drainage structure 3 is formed by connecting permeable component 31, sealing component 32, water guiding component 33 and observation component 34 into one unit;

[0059] S2. Zoned treatment of the foundation to be treated: Set up a drainage structure 3 in each zone, and insert the permeable component 31 of each drainage structure 3 into the foundation to be treated until the sealing component 32 is close to the foundation surface.

[0060] S3. Connect each drainage structure 3: The sides of adjacent cover plates 321 that are close to each other are connected by sealing strips 322. The branch pipes 331 of adjacent water guiding components 33 that are close to each other are connected by joints. The first drainage pipe 1 and the second drainage pipe 2 are respectively set on the adjacent sides of the foundation to be treated. The first drainage pipe 1 and the second drainage pipe 2 are respectively connected to each adjacent water guiding component 33. The ends of the first drainage pipe 1 and the second drainage pipe 2 that are close to each other are connected to the external negative pressure source through a three-way valve. The remaining unconnected ports are sealed.

[0061] S4. Open each drainage structure 3: drive each observation rod 342 to expose its corresponding permeable component 31 to the highest level, and then drive each observation rod 342 to retract into its corresponding permeable component 31 a certain distance.

[0062] S5. Drainage action: Control the external negative pressure source to perform drainage action on the foundation to be treated. During the drainage process, pull out the observation rod 342 to check its wetted position to judge the water level change of the permeable component 31. When the drainage action of each unit is stopped, drive the observation rod 342 corresponding to that area to completely retract into the permeable component 31.

[0063] It should be noted that in step S3 above, each adjacent cover plate 321 is connected by a sealing strip 322 to form a plate structure covering the surface of the foundation, so that the interior of the foundation forms a relatively closed space. When the pressure inside the permeable pile is less than the atmospheric pressure, the outside air can only enter the interior of the foundation through the soil around the foundation, which is conducive to the rapid seepage of water in the foundation and its flow to the permeable component 31, further accelerating the drainage rate of the foundation.

[0064] It should be noted that in step S4 above, during the process of driving the observation rod 342 away from the water pipe 311 to the highest level, the partition ring 343 is driven out of the water pipe 311 by the observation rod 342. At the same time, the partition ring 343 moves and engages with the top of the internal cavity of the water guiding assembly 33. The partition ring 343 engaging with the top of the internal cavity of the water guiding assembly 33 can block the gap between the observation ring 341 and the observation rod 342. Subsequently, the observation rod 342 is driven back to a certain distance inside the water pipe 311. The purpose of not completely retracting the observation rod 342 into the water permeable assembly 31 is to prevent the partition ring 343 from detaching from the top of the internal cavity of the water guiding assembly 33.

[0065] It should be noted that in step S5 above, the external negative pressure source is equipment such as a vacuum pump. When the external negative pressure source is working, the pressure inside the pipe network composed of water-conducting components 33 and inside each permeable component 31 is less than atmospheric pressure. Under the action of atmospheric pressure, the groundwater in the foundation will flow into the permeable component 31. Under the action of the permeable membrane 316, the particulate matter carried in the groundwater is blocked outside the permeable component 31. The groundwater in the permeable component 31 will enter its interior through the water inlet of the water-conducting pipe 311. Under the action of negative pressure, the groundwater enters the pipe network composed of water-conducting components 33 through the water-conducting pipe 311 and is finally discharged to the outside of the foundation.

[0066] To further explain, during the process of the observation rod 342 retracting completely into the permeable component 31, due to the drive and restriction of the observation rod 342, the partition ring 343 will move into the water pipe 311, eventually entering and engaging inside the end of the water pipe 311 away from the wedge 315, blocking the connection between the water pipe 311 and the water component 33, so as to stop the pumping and drainage operation in that area.

[0067] In this invention, the star-shaped cylindrical design of the permeable pile 313 increases the contact area with the material inside the foundation to be treated. Multiple permeable components 31 are evenly arranged and inserted into the foundation to be treated. Each adjacent sealing plate is connected by a sealing strip 322 to form a plate-like structure covering the surface of the foundation to be treated. Each adjacent water-conducting component 33 is connected by a joint to form a grid-like pipe network, further increasing the stability of the entire structure. This provides a relatively stable rigid support for the foundation, reduces post-construction settlement, and further improves the bearing capacity of the foundation. A permeable membrane 316 is set between the support pipe 312 and the permeable pile 313 to prevent particles carried by the groundwater from entering the interior of the permeable pile 313, avoiding poor drainage or inability to drain water caused by the accumulation of particles inside the drainage structure 3. The support plate 314 and the permeable pile 313 increase the contact area between the permeable membrane 316 and the groundwater. Multiple sealing caps are connected and cover the surface of the foundation to be treated, which can further increase the rate at which groundwater enters the interior of the drainage structure 3.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A ground treatment rapid drainage pipe network composite structure characterized by, The drainage structure comprises at least two rows and two columns of drainage structures arranged in an array on the foundation, and a first drain pipe and a second drain pipe arranged on two adjacent sides of the foundation; the end of each of the two adjacent drainage structures in the same row or column is connected to each other, the first drain pipe is connected to each of the drainage structures in the outermost row or column, the second drain pipe is connected to each of the drainage structures in the outermost row or column, and one end of the first drain pipe and one end of the second drain pipe are connected to an external negative pressure source through a tee joint. The drainage structure sequentially comprises a water permeable assembly, a sealing assembly and a water guide assembly from bottom to top; the water permeable assembly is a tubular structure with one end sealed, the sealed end of the water permeable assembly extends into the foundation, the open end of the water permeable assembly is connected to one end of the sealing assembly, and the other end of the sealing assembly is connected to the water guide assembly. The water permeable assembly comprises a water guide pipe, a support pipe and a water permeable pile which are successively sleeved from inside to outside, the support pipe is annularly arranged with at least two long strip support plates along its axis, one end of each support plate away from the support pipe is connected to the outer wall of the support pipe, and the water guide pipe, the support pipe, the water permeable pile and one end of each support plate are connected to a wedge. The water permeable pile comprises a concave plate and an arc plate, one end of each support plate away from the support pipe is sleeved with a concave plate, and each adjacent two concave plates are connected to two ends of an arc plate in the circumferential direction, respectively, each arc plate is concentric with the support pipe, and a preset distance is provided between the inner wall of each concave plate and the corresponding support plate and between the inner wall of each arc plate and the outer wall of the support pipe.

2. The ground treatment rapid drainage pipe network composite structure according to claim 1, characterized by, The water permeable pile further comprises a water permeable membrane, and the inner wall of each concave plate and the inner wall of each arc plate are paved with the water permeable membrane; wherein the wall of the water permeable pile and the support pipe is provided with water permeable holes, and the wall of the water guide pipe near the wedge end is provided with water guide holes.

3. The ground treatment rapid drainage pipe network composite structure according to claim 2, characterized by, One end of the wedge connected to the water guide pipe, the support pipe, the water permeable pile and each support plate is a plane and is consistent with the axial section of the water permeable pile, the other end of the wedge is provided with a first sharp part corresponding to the water guide pipe and a second sharp part corresponding to each concave plate, and the axial section area of the first sharp part and each second sharp part gradually decreases away from the water guide pipe.

4. The ground treatment rapid drainage pipe network composite structure according to claim 3, characterized by, The sealing assembly comprises a cover plate, a circular hole is formed in the middle of the cover plate, one end of the support pipe, the water permeable pile and each support plate away from the wedge is connected to one end face of the cover plate, and the end of the water guide pipe away from the wedge penetrates through the circular hole and extends to the other end face of the cover plate.

5. The ground treatment rapid drainage pipe network composite structure according to claim 4, characterized by, The sealing assembly further comprises a sealing strip, the cover plate is a rectangular plate, an acute angle missing groove is formed in each side of the end face of the cover plate away from the wedge, the side faces of two cover plates are butted to form a trapezoidal groove with the axial section of the trapezoidal groove being bottom wide and mouth narrow, the sealing strip is a long strip structure formed by connecting the narrow end face of a trapezoidal column to one end face of a rectangular column, and the trapezoidal part of the sealing strip is in interference fit with the trapezoidal groove.

6. The ground treatment rapid drainage pipe network composite structure according to claim 5, characterized by, The observation assembly comprises an observation ring, an observation rod and a partition ring; the water guide assembly is connected with the observation ring away from the end surface of the sealing assembly; one end of the observation rod penetrates the observation ring and the water guide assembly in sequence and extends into the water guide pipe; and the partition ring is arranged in the water guide assembly and sleeved on the observation rod.

7. The ground treatment rapid drainage pipe network composite structure according to claim 6, characterized by, The water guide assembly is a four-way water pipe, and one branch pipe is arranged on each side of the cover plate corresponding to the water guide assembly; the axis of each branch pipe is parallel to the end surface of the cover plate away from the water permeable assembly; and the axis of each branch pipe is perpendicular to the corresponding side of the cover plate.

8. A construction method of a ground treatment rapid drainage pipe network composite structure, characterized by, The application discloses a foundation treatment quick drainage pipe network combined structure, and relates to the technical field of foundation treatment. The observation assembly comprises an observation ring, an observation rod and a partition ring; the water guide assembly is connected with the observation ring away from the end surface of the sealing assembly; one end of the observation rod penetrates the observation ring and the water guide assembly in sequence and extends into the water guide pipe; and the partition ring is arranged in the water guide assembly and sleeved on the observation rod. The water guide assembly is a four-way water pipe, and one branch pipe is arranged on each side of the cover plate corresponding to the water guide assembly; the axis of each branch pipe is parallel to the end surface of the cover plate away from the water permeable assembly; and the axis of each branch pipe is perpendicular to the corresponding side of the cover plate. The application discloses a foundation treatment quick drainage pipe network combined structure, and relates to the technical field of foundation treatment. The observation assembly comprises an observation ring, an observation rod and a partition ring; the water guide assembly is connected with the observation ring away from the end surface of the sealing assembly; one end of the observation rod penetrates the observation ring and the water guide assembly in sequence and extends into the water guide pipe; and the partition ring is arranged in the water guide assembly and sleeved on the observation rod. The water guide assembly is a four-way water pipe, and one branch pipe is arranged on each side of the cover plate corresponding to the water guide assembly; the axis of each branch pipe is parallel to the end surface of the cover plate away from the water permeable assembly; and the axis of each branch pipe is perpendicular to the corresponding side of the cover plate. The application discloses a foundation treatment quick drainage pipe network combined structure, and relates to the technical field of foundation treatment. The observation assembly comprises an observation ring, an observation rod and a partition ring; the water guide assembly is connected with the observation ring away from the end surface of the sealing assembly; one end of the observation rod penetrates the observation ring and the water guide assembly in sequence and extends into the water guide pipe; and the partition ring is arranged in the water guide assembly and sleeved on the observation rod. The water guide assembly is a four-way water pipe, and one branch pipe is arranged on each side of the cover plate corresponding to the water guide assembly; the axis of each branch pipe is parallel to the end surface of the cover plate away from the water permeable assembly; and the axis of each branch pipe is perpendicular to the corresponding side of the cover plate.

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