Waterproof node for tensioning end of anti-floating anchor rod

Abstract

The invention relates to an anti-floating anchor stretch-draw end waterproof node which comprises a stretch-draw end node body and a waterproof system, a concrete cushion layer is located above a foundation layer, a structural layer is located above the concrete cushion layer, and the stretch-draw end node body comprises a prestress transmission device, an anchoring locking device, a hanging bar, a steel sleeve, a spiral bar, a partition plate and a reinforcing mesh I; the prestress transmission device is fixed to the upper surface of the concrete cushion layer and partially embedded in the structural layer, the anchoring locking device is arranged at the upper end of the prestress transmission device, the steel sleeve is embedded in the concrete cushion layer and located under the prestress transmission device, and the spiral rib surrounds the periphery of the steel sleeve. A square structure is defined by the partition plates on the periphery of the prestress transmission device, and the reinforcing mesh I is laid in a square area defined by the partition plates. The waterproof system is used for sealing and blocking a water seepage path of the tensioning end joint body. The waterproof structure has the advantages of being more stable and safer in structure and more durable and reliable in waterproof performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of anti-floating technology of building underground engineering, and particularly relates to a waterproof joint of a tensioning end of an anti-floating anchor rod. BACKGROUND

[0002] The anti-floating anchor rod is a key technology for solving the problem of upward floating of underground buildings. At present, anchor rod tensioning on the ground layer is a common construction process. For example, a campus underground garage raft anti-seepage structure disclosed in Chinese patent CN223088496U comprises an anchor rod pile, an anti-floating anchor rod is vertically arranged in the anchor rod pile, a waterproof layer is arranged at the top of the anti-floating anchor rod, a concrete cushion layer is arranged around the waterproof layer, a first waterproof rubber sleeve is arranged on the top of the waterproof layer outside the anti-floating anchor rod, a second waterproof rubber sleeve is sleeved outside the first waterproof rubber sleeve, a waterproof roll material is arranged between the first waterproof rubber sleeve and the second waterproof rubber sleeve, the waterproof roll material extends to the upper surface of the concrete cushion layer at the periphery, the first waterproof rubber sleeve is filled with asphalt waterproof oil paste, a sealing strip is sleeved on the anti-floating anchor rod at a position corresponding to the upper surface of the asphalt waterproof oil paste, the bottom end of the sealing strip is in close contact with the upper surface of the asphalt waterproof oil paste, and a structural bottom plate is arranged at the top of the concrete cushion layer. The anti-seepage structure can effectively avoid the problem of underground water seepage along the anti-floating anchor rod, but has two core defects. First, the huge tensioning force is concentrated on the concrete cushion layer with a low strength grade, which easily causes local crushing or radial cracks of the concrete, threatening the safety of the structure. Second, the tensioning end structure is complex, and there are many interfaces between the anchor rod pile, the anti-floating anchor rod, the concrete cushion layer and the subsequently poured structural bottom plate. Traditional waterproof measures, such as simple roll material inclusion, concrete covering and asphalt waterproof oil paste filling, are difficult to form an effective closed loop, and underground water is easy to seep into the indoor space along the anchor rod surface or various joints, and it is extremely difficult to maintain or become a permanent hidden danger. SUMMARY

[0003] The present application aims to provide a waterproof joint of a tensioning end of an anti-floating anchor rod to solve the problems existing in the prior art. The technical problems to be solved by the present application are solved by the following technical solutions.

[0004] The anti-floating anchor rod tensioning end waterproof joint comprises a tensioning end joint body and a waterproof system, is arranged between a concrete cushion layer and a structure layer, the concrete cushion layer is located above a foundation layer, the structure layer is located above the concrete cushion layer, the tensioning end joint body comprises a prestress transmission device, an anchoring locking device, a hanging bar, a steel sleeve, a spiral bar, a partition plate and a steel mesh I, the prestress transmission device is fixed to the upper surface of the concrete cushion layer and partially embedded in the structure layer, the upper end of the prestress transmission device is provided with the anchoring locking device, the steel sleeve is embedded in the concrete cushion layer and located directly below the prestress transmission device, the spiral bar is arranged around the outer periphery of the steel sleeve, the lower part of the partition plate is arranged in the foundation layer and the upper part is arranged in the concrete cushion layer, the partition plate is surrounded into a square structure around the outer periphery of the prestress transmission device, the steel mesh I is arranged on the bottom of the concrete cushion layer, outside the steel sleeve and within the square area surrounded by the partition plate, the lower end of the anchor rod body is embedded in the foundation layer and the upper end is arranged in the steel sleeve, the prestress transmission device and the anchoring locking device, the anchor rod body comprises a steel strand and a cement slurry embedded in the anchor hole after solidification, the bottom and the top of the structure layer are both paved with a steel mesh II, the upper end and the lower end of the hanging bar are respectively anchored on the steel mesh II on the top and the bottom of the structure layer, the hanging bar is arranged in the structure layer in a "well" shape with the prestress transmission device as the center, the inclined part of the middle section of the hanging bar is inclined outward, the inclined part of the hanging bar forms an angle of 60° with the horizontal plane, the prestress transmission device comprises an upper pressure bearing plate, a lower pressure bearing plate and four supporting rods arranged between the upper pressure bearing plate and the lower pressure bearing plate, the upper pressure bearing plate and the lower pressure bearing plate are circular structures with through holes in the middle for the steel strand to pass through, and the waterproof system is used for sealing and plugging the water permeable path of the tensioning end joint body.

[0005] Preferably, the steel mesh I and / or the steel mesh II are double-layered and bidirectional.

[0006] Preferably, the waterproof system comprises a waterproof layer arranged between the structure layer and the concrete cushion layer.

[0007] Preferably, the waterproof layer comprises a cement-based capillary crystalline waterproof coating layer coated on the upper surface of the concrete cushion layer in a predetermined area around the periphery of the anchor rod body, and an epoxy asphalt anticorrosive coating layer, a high polymer self-adhesive waterproof coiled material layer and a non-asphalt-based high polymer self-adhesive film waterproof coiled material layer coated in sequence from bottom to top and covering the entire concrete cushion layer above the cement-based capillary crystalline waterproof coating layer.

[0008] Preferably, the waterproof system further comprises a waterproof rubber ring sleeved outside the steel strand, the waterproof rubber ring is located at the bottom of the prestress transmission device, and the lower end surface is tightly bonded with the upper end surface of the waterproof layer.

[0009] Preferably, the waterproof system further comprises a CPS waterproof sealant layer arranged between the lower end surface of the prestress transmission device and the upper end surface of the waterproof rubber ring.

[0010] Preferably, the waterproof system further comprises a water-swelling sealant coated on the outer surface of the steel strand in the prestress transmission device and the steel sleeve.

[0011] Preferably, the waterproof system comprises a cement paste sealing layer poured in the steel sleeve, and the top surface of the cement paste sealing layer is lower than the top surface of the concrete cushion layer.

[0012] Preferably, the waterproof system further comprises a non-solidified asphalt waterproof oil sealant sealing layer I filled in the inner ring of the waterproof rubber ring and the enclosed space on the upper end of the cement paste sealing layer.

[0013] Preferably, the waterproof system comprises a non-solidified asphalt waterproof oil sealant sealing layer II coated at the joint between the bottom of the prestress transmission device and the waterproof layer.

[0014] The anti-floating anchor rod tensioning end waterproof joint provided by the application has the following beneficial effects: 1) The combination of the prestress transmission device, the spiral rib, the local reinforcement mesh and the hanging rib disperses the huge concentrated force generated during tensioning to the concrete cushion layer and the structure layer with increased stiffness, effectively avoids the crushing or cracking of the concrete cushion layer during tensioning, ensures the smooth tensioning operation and the long-term structural stability of the tensioning end joint body area, and fundamentally eliminates the engineering safety hazards caused by the damage of the tensioning end joint body.

[0015] 2) The waterproof system breaks through the limitations of traditional single waterproof thinking, sets waterproof sealing layers for each path through which water may penetrate, such as the surface of the concrete cushion layer, the joint of the coiled material, the interface of the components, the surface of the steel strand, and the like, constructs an eleven-layer composite waterproof system from the treatment of the concrete cushion layer to the flexible main waterproof layer, to the interface sealing and the material self-healing, and constitutes a three-dimensional, complementary and reliable waterproof system, which greatly improves the durability of the waterproof layer.

[0016] 3) The application scientifically integrates and standardizes the reinforcement and waterproof structure of the tensioning end joint body, avoids the damage to the concrete cushion layer and the waterproof layer caused by later chiseling and beating by the setting of the steel sleeve, the clear and explicit step-by-step waterproof construction steps are easy to operate, reduce the excessive dependence on the technology of workers, and are conducive to ensuring the stable and reliable construction quality of the complex joint. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a structural schematic diagram of the laying structure of the partition plate in the present application; Figure 3 is a structural schematic diagram of the waterproof rubber sleeve ring in the present application; Figure 4 is a structural schematic diagram of the prestress transmission device in the present application; Figure 5 is a structural schematic diagram of the waterproof system in the present application; The reference signs in the drawings are as follows: 1, prestress transmission device; 2, anchoring locking device; 3, hanging bar; 4, steel sleeve; 5, spiral bar; 6, partition plate; 7, steel mesh I; 8, anchor rod body; a1, foundation layer; a2, concrete cushion layer; a3, waterproof layer; a4, structural layer; b1, cement-based penetrating crystalline waterproof coating layer; b2, epoxy asphalt anticorrosive coating layer; b3, high polymer self-adhesive waterproof roll material layer; b4, non-asphalt-based high polymer self-adhesive film waterproof roll material layer; b5, waterproof rubber sleeve ring; b6, CPS waterproof sealing paste layer; b7, water-swelling sealant; b8, cement mortar plugging layer; b9, non-solidified asphalt waterproof oil paste sealing layer I; b10, non-solidified asphalt waterproof oil paste sealing layer II. DETAILED DESCRIPTION

[0018] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0019] Embodiment 1: An improved anti-buoyancy anchor tensioning end waterproof joint includes a tensioning end joint body and a waterproofing system, positioned between a concrete cushion layer a2 and a structural layer a4. The concrete cushion layer a2 is located above the subgrade a1, and the structural layer a4 is located above the concrete cushion layer a2. The tensioning end joint body includes a prestressing transfer device 1, an anchoring locking device 2, a lifting bar 3, a steel sleeve 4, a spiral bar 5, a partition plate 6, and a steel mesh 17. The prestressing transfer device 1 is fixed to the upper surface of the concrete cushion layer a2 and partially embedded in the structural layer a4. The upper end of the prestressing transfer device 1 is provided with the anchoring locking device 2. The steel sleeve 4 is embedded in the concrete cushion layer a2 and located directly below the prestressing transfer device 1. The spiral bar 5 surrounds the outer periphery of the steel sleeve 4. The lower part of the partition plate 6 is placed in the base layer a1, and the upper part is placed in the concrete cushion layer a2. The partition plate 6 forms a square structure around the prestress transfer device 1. The steel mesh I7 is laid at the bottom of the concrete cushion layer a2, located outside the steel sleeve 4, and its boundary does not exceed the square area enclosed by the partition plate 6. The lower end of the anchor rod body 8 is embedded in the base layer a1, and the upper end passes through the steel sleeve 4, the prestress transfer device 1, and the anchor locking device 2. The anchor rod body 8 includes steel strands and cement grout injected into the anchor hole after solidification. The suspension rods 3 are arranged in a "well" shape in the structural layer a4 with the prestress transfer device 1 as the center. The inclined part of the middle section of the suspension rod 3 is inclined outward. The waterproof system is used to seal and block the permeable path of the tensioning end node body.

[0020] In this embodiment, refer to Figures 1 to 4 As shown, the prestress transfer device 1 is a one-piece cast iron component. Its lower end is fixed to the upper surface of the concrete pad layer a2, and its upper part is embedded in the subsequently poured structural layer a4. It is used to uniformly transfer the tension force of the anchor rod body 8 to the structural layer a4. Through its own rigid structure, it evenly distributes the concentrated force acting on the steel strand to the steel mesh I7 within the square area enclosed by the partition plate 6 below, thus initially reducing the local pressure. Furthermore, after the structural layer a4 is poured, the prestress transfer device 1 is anchored to the structural layer a4 as a whole through the lifting bar 3 and the steel mesh II. When buoyancy is applied, the prestress transfer device 1 will tightly hold the structural layer a4, ensuring the stability of the structure.

[0021] Anchoring locking device 2 is installed at the top of prestress transfer device 1. The top of the steel strand of anchor rod body 8 passes through anchoring locking device 2. Anchoring locking device 2 is used to lock the tensioned steel strand.

[0022] The lower end of the suspension rod 3 is anchored to the steel mesh II laid at the bottom of the structural layer a4, and the upper end is anchored to the steel mesh II laid at the top of the structural layer a4. They are arranged in a "well" shape with the prestressing transfer device as the center. The upper end is bent up in both directions at a 60° angle. The suspension rod 3 is a bridge connecting the concrete pad layer a2 and the structural layer a4. The stress from directly below the prestressing transfer device 1 is dispersed to the steel mesh II at the bottom of the structural layer a4 through the prestressing transfer device 1. Then, the stress on the steel mesh II at the bottom of the structural layer a4 is transferred to the steel mesh II at the top of the structural layer a4 through the suspension rod 3, thereby further dispersing the stress intensity of the structural layer a4.

[0023] The steel sleeve 4 is embedded in the concrete cushion layer a2 to provide deformation space for the prestressing tensioning of the steel strand. After the steel strand is tensioned, cement grout is injected into the steel sleeve 4 to seal it.

[0024] The spiral reinforcement 5, encircling the steel sleeve, resists local shear forces and prevents the concrete from crushing, thus enhancing the compressive and splitting strength of the concrete cushion layer a2. Locally, radial expansion and shear stresses occur in the concrete cushion layer a2; the spiral reinforcement 5, through circumferential restraint, counteracts these stresses, preventing the concrete cushion layer a2 from cracking or crushing.

[0025] The partition plate 6 is typically inserted into the subgrade a1 and half-embedded in the concrete cushion a2, effectively dividing the concrete cushion a2 into square areas centered on each anchor bolt 8. When the steel strands of each anchor bolt 8 are tensioned, the steel strands of adjacent groups are unaffected. Tensioning the steel strands in a specific area will not cause any loss of prestress in other areas where the anchor bolts have already been tensioned and locked. If the entire steel mesh I is integrated, and an anomaly occurs in a particular anchor bolt, such as unstable prestress or insufficient elongation, it is difficult to quickly determine whether the problem lies with the anchor bolt itself or with the uneven deformation of other anchor bolts or the foundation. Therefore, the partition plate 6, combined with the localized steel mesh I7, creates an independent bearing platform for each group of steel strands, ensuring accurate, independent, and non-interfering prestress in each group of steel strands.

[0026] Furthermore, the prestress transfer device 1 includes an upper bearing plate, a lower bearing plate, and four support rods disposed between the upper bearing plate and the lower bearing plate.

[0027] In this embodiment, refer to Figure 2 and Figure 4 As shown, the upper and lower bearing plates are circular structures with through holes in the middle for the steel strands to pass through. The inner diameter of the through hole is equal to the outer diameter of the steel sleeve 4. The outer diameter of the lower bearing plate, D5, is greater than or equal to D1, where D1 is the diameter of the anchor hole.

[0028] Further, the steel sleeve 4 is an open structure from top to bottom, the upper opening has an inner diameter D3 which is larger than the total diameter of the steel strand, and the lower opening has an inner diameter D2 which is equal to the diameter D1 of the anchor hole. The upper end surface of the steel sleeve 4 is flush with the top elevation of the concrete cushion a2, and the lower end surface is lower than the bottom elevation of the concrete cushion a2 by a height D4 = 50 mm, that is, the lower end of the steel sleeve 4 is buried in the foundation layer a1 by 50 mm.

[0029] Further, the spiral rib 5 is made of φ8~φ12mm HPB300 or HRB400 steel bar, and the pitch is 20mm~50mm.

[0030] Further, the partition plate 6 is made of wood or extruded plate, and the center distance D7 between the partition plate and the anchor rod body 8 is 4D1, and the thickness of the partition plate 6 is not less than 20mm, and part of it is buried in the foundation layer a1.

[0031] Further, the steel mesh I7 is made of φ8~φ12mm HRB400 steel bar, and the grid spacing is 100mm x 100mm or 150mm x 150mm.

[0032] Further, the bottom and top of the structural layer a4 are paved with steel mesh II, the upper and lower ends of the hanging rib 3 are anchored on the steel mesh II at the top and bottom of the structural layer a4 respectively, and the inclined part of the hanging rib 3 forms an angle of 60° with the horizontal plane.

[0033] Further, the steel mesh II is made of φ8~φ12mm HRB400 steel bar, and the grid spacing is 100mm x 100mm or 150mm x 150mm.

[0034] Further, the steel mesh I7 and / or steel mesh II is a double-layer and double-direction steel mesh.

[0035] Example 2: Based on example 1, referring to Figure 5 The waterproof system includes a waterproof layer a3, which includes a cement-based permeable crystalline waterproof coating layer b1 coated on the upper surface of the concrete cushion a2 within a specified area around the anchor rod body 8, and an epoxy asphalt anticorrosive coating layer b2, a polymer self-adhesive waterproof coiled material layer b3, and a non-asphalt-based polymer self-adhesive film waterproof coiled material layer b4, which are sequentially coated from bottom to top and cover the entire concrete cushion a2.

[0036] In this embodiment, the cement-based permeable crystalline waterproof coating has the characteristic of crystallizing in water, which can block the tiny gaps on the upper surface of the concrete cushion a2, and form a first local waterproof enhanced barrier at the key position where the steel strand contacts the concrete cushion a2.

[0037] The epoxy asphalt anticorrosive coating can not only isolate the concrete cushion a2 from contacting with external moisture to prevent the concrete cushion a2 from being damp, but also provide a flat and firmly bonded base for subsequent coiled material laying, and has anticorrosive capacity.

[0038] The high polymer self-adhesive waterproof coiled material layer b3 is one of the core waterproof layers, which is closely attached to the concrete cushion a2 by self-adhesion, and blocks most of the external water from penetrating into the structure by using the impermeability of the high polymer material, and can resist slight damage that may be caused in the subsequent construction process.

[0039] The non-asphalt-based high polymer self-adhesive waterproof coiled material b4 and the high polymer self-adhesive waterproof coiled material layer b3 form a double-layer coiled material waterproof structure, further improving the impermeability level. The non-asphalt-based material has the properties of aging resistance and corrosion resistance, and can adapt to structural deformation to avoid waterproof failure caused by coiled material cracking.

[0040] Further, the brushing range of the cement-based capillary crystalline waterproof coating layer b1 is a circular area with the anchor rod body 8 as the center and a diameter not less than 150 mm.

[0041] Further, the waterproof system further comprises a waterproof rubber collar b5 sleeved on the outside of the steel strand, which is located at the bottom of the prestress transmission device 1 and the lower end surface is closely bonded with the upper end surface of the non-asphalt-based high polymer self-adhesive waterproof coiled material layer.

[0042] In this embodiment, as shown in Figure 3 The inner diameter D10 of the upper end of the waterproof rubber collar b5 is equal to D3, the outer flange size D11 needs to exceed the outer aid of the lower bearing plate of the prestress transmission device 1, and the collar height D12 is greater than or equal to 50 mm. The bottom surface of the waterproof rubber collar b5 is bonded with the non-asphalt-based high polymer self-adhesive waterproof coiled material b4, and the inner ring is wrapped on the outside of the steel strand. Through the elastic sealing effect of the rubber, the leakage problem of the weak point formed by the steel strand penetrating the coiled material is solved, and the path of water penetration between the steel strand and the coiled material is blocked.

[0043] Further, the waterproof system further comprises a CPS waterproof sealant layer b6 arranged between the lower end surface of the prestress transmission device 1 and the upper end surface of the waterproof rubber collar b5.

[0044] In this embodiment, the CPS waterproof sealant seals the gap between the waterproof rubber collar b5 and the prestress transmission device 1, forming a continuous waterproof interface to prevent water from penetrating from the joint between the two.

[0045] Further, the waterproof system further comprises a water-swelling sealant b7 coated on the outer surface of the steel strand in the prestress transmission device 1 and the steel sleeve 4.

[0046] In this embodiment, water-swellable sealant is wrapped and applied to the steel strands inside the prestress transfer device 1. Once water seeps in, the sealant will expand upon contact with water, actively filling the tiny gaps between the steel strands, achieving a self-sealing effect upon contact with water, and blocking the channels for water to seep inward along the gaps between the steel strands.

[0047] Furthermore, the thickness of the water-swellable sealant b7 applied to a single steel strand is not less than 10 mm.

[0048] Furthermore, the waterproofing system includes a cement slurry sealing layer b8 poured into the steel sleeve 4, the top surface of the cement slurry sealing layer b8 being lower than the top surface of the concrete pad layer a2. The waterproofing system also includes a non-curing asphalt waterproof sealant layer Ib9 poured into the space enclosed by the inner ring of the waterproof rubber collar b5 and the upper end of the cement slurry sealing layer b8.

[0049] In this embodiment, the cement slurry sealing layer b8 inside the steel sleeve 4 serves as the first rigid sealing barrier inside the steel sleeve 4, preventing most of the water from entering the depths of the sleeve and providing stable bottom support for the subsequent injection of non-curing asphalt waterproof sealant.

[0050] In this embodiment, the cement slurry sealing layer b8 is lower than the top surface of the concrete cushion layer a2, and a non-curing asphalt waterproof sealant layer Ib9 is filled in this cavity. On the one hand, this space serves as the deformation space for the tensioning operation of the steel strand. This is because the steel strand will deform upward during the tensioning process. Therefore, a certain space is reserved between the anchor body 8 and the top of the steel sleeve. On the other hand, the non-curing asphalt has the characteristics of never curing and continuous adhesion, which can adapt to structural settlement and anchor deformation, and always tightly fill the space, preventing water from accumulating or seeping in the reserved cavity.

[0051] Furthermore, the top surface of the cement slurry sealing layer b8 is 15-25mm lower than the top surface of the concrete cushion layer a2.

[0052] Furthermore, the waterproofing system includes a non-curing bitumen waterproof sealant layer IIb10 applied to the joint between the bottom of the prestress transfer device 1 and the waterproof layer a3.

[0053] In this embodiment, non-curing asphalt waterproof sealant is filled around the joint between the bottom of the prestress transfer device 1 and the waterproof layer a3 to specifically seal the joint gaps in the secondary nodes and prevent water from breaking through the connection between the prestress transfer device 1 and the waterproof layer a3.

[0054] Furthermore, impermeable concrete is poured on top of the waterproof layer a3 to form structural layer a4, which serves as the final self-waterproof barrier for the structure, wrapping and sealing the entire tensioned end node body. The impermeable concrete itself has impermeability properties, completely isolating all internal waterproof structures from the external environment, forming the last layer of waterproof protection.

[0055] This embodiment provides a waterproof node at the tensioning end of an anti-buoyancy anchor rod, which breaks through the limitations of traditional single waterproofing thinking. It sets up a waterproof sealing layer for every possible path of water penetration, such as the surface of the concrete pad, the joint of the membrane, the interface of the component, and the surface of the steel strand. It constructs an eleven-layer composite waterproofing system from concrete pad treatment to flexible main waterproofing, to interface sealing and material self-healing, forming a three-dimensional, complementary and reliable waterproofing system, which greatly improves the durability of the waterproofing layer.

[0056] This embodiment provides a waterproof joint at the tensioning end of an anti-buoyancy anchor rod, and its construction method includes the following steps: S1, pour a concrete cushion layer a2 on the ground base layer a1, and simultaneously embed steel sleeve 4, lay spiral reinforcement 5, partition plate 6 and steel mesh I7. S2, Apply waterproof layer a3 to the upper surface of concrete cushion layer a2; including the following steps: S21, apply cement-based penetrating crystalline waterproof coating to the area around the anchor bolt body 8 to form a cement-based penetrating crystalline waterproof coating layer b1; S22, apply epoxy asphalt anti-corrosion coating to the entire upper surface of concrete cushion layer a2 to form epoxy asphalt anti-corrosion coating layer b2; S23, a polymer self-adhesive waterproof membrane is laid on the epoxy asphalt anti-corrosion coating layer b2 to form a polymer self-adhesive waterproof membrane layer b3. S24, A non-bitumen-based polymer self-adhesive waterproof membrane is laid on top of the polymer self-adhesive waterproof membrane layer b3 to form a non-bitumen-based polymer self-adhesive waterproof membrane layer b4. S3, slip the waterproof rubber collar b5 onto the end of the steel strand and push it down along the steel strand to the top of the concrete pad layer a2, so that the waterproof rubber collar b5 fits tightly against the upper surface of the waterproof layer a3. Then apply CPS waterproof sealant to the upper surface of the waterproof rubber collar b5 to form a CPS waterproof sealant layer b6. S4, Install the prestress transfer device 1 and the suspension rod 3; S5, apply sufficient amount of water-swellable sealant b7 to each steel strand; S6, Install an anchoring and locking device at the top of the prestress transfer device 1, and perform prestressing tensioning and locking according to design requirements; S7. After tensioning and locking are completed, cement grout is injected into the steel sleeve 4 to the specified height to form a cement grout sealing layer b8. S8. Non-curing asphalt waterproof sealant is injected into the cavity inside the waterproof rubber collar b5 and the cavity above the cement sealing layer b8 inside the steel sleeve 4 to form a non-curing asphalt waterproof sealant sealing layer Ib9. S9, Non-curing asphalt waterproof sealant is injected around the joint between the bottom of the prestress transfer device 1 and the waterproof layer a3 to form a non-curing asphalt waterproof sealant layer IIb10. S10, pour impermeable concrete to form structural layer a4.

[0057] It should be noted that the above detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0058] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments described in this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0059] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0060] 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 apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0061] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0062] In the detailed description above, reference has been made to the accompanying drawings, which form part of this document. In the drawings, similar symbols typically identify similar parts unless the context otherwise indicates otherwise. The illustrated embodiments described in the detailed specification, drawings, and claims are not intended to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An anti-floating anchor rod tensioning end waterproof joint, characterized in that: The tension end node body and the waterproof system are arranged between a concrete cushion layer (a2) and a structure layer (a4), the concrete cushion layer (a2) is located above a foundation layer (a1), the structure layer (a4) is located above the concrete cushion layer (a2), the tension end node body comprises prestressed force transmission devices (1), anchoring locking devices (2), hanging reinforcement (3), steel sleeves (4), spiral reinforcement (5), partition plates (6), and steel mesh I (7), the prestressed force transmission devices (1) are fixed to the upper surface of the concrete cushion layer (a2) and partially embedded in the structure layer (a4), the upper end of the prestressed force transmission devices (1) is provided with the anchoring locking devices (2), the steel sleeves (4) are embedded in the concrete cushion layer (a2) and located directly below the prestressed force transmission devices (1), the spiral reinforcement (5) is arranged around the outer periphery of the steel sleeves (4), the lower part of the partition plates (6) is arranged in the foundation layer (a1), and the upper part is arranged in the concrete cushion layer (a2), the partition plates (6) are surrounded into a square structure at the periphery of the prestressed force transmission devices (1), the steel mesh I (7) is arranged on the bottom of the concrete cushion layer (a2), located outside the steel sleeves (4) and the boundary does not exceed the square area surrounded by the partition plates (6), the lower end of the anchor rod body (8) is embedded in the foundation layer (a1), and the upper end is arranged in the steel sleeves (4), the prestressed force transmission devices (1) and the anchoring locking devices (2), the anchor rod body (8) comprises steel strands and cement slurry poured in the anchor hole after solidification; the bottom and the top of the structure layer (a4) are both paved with steel mesh II, the upper end and the lower end of the hanging reinforcement (3) are respectively anchored on the steel mesh II at the top and the bottom of the structure layer (a4), the hanging reinforcement (3) is arranged in the structure layer (a4) in a "well" shape with the prestressed force transmission devices (1) as the center, the inclined part of the middle segment of the hanging reinforcement (3) is inclined outward, and the inclined part of the hanging reinforcement (3) forms an angle of 60° with the horizontal plane; the prestressed force transmission devices (1) comprise upper pressure bearing plates, lower pressure bearing plates and four supporting rods arranged between the upper pressure bearing plates and the lower pressure bearing plates, the upper pressure bearing plates and the lower pressure bearing plates are circular structures with through holes in the middle to pass through the steel strands; the waterproof system is used for sealing and plugging the water permeable path of the tension end node body.

2. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 1, characterized in that: The steel mesh I (7) and / or the steel mesh II are double-layer and double-direction steel meshes.

3. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 1, characterized in that: The waterproof system comprises a waterproof layer (a3), and the waterproof layer (a3) is arranged between the structure layer (a4) and the concrete cushion layer (a2).

4. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 3, characterized in that: The waterproof layer (a3) comprises a cement-based capillary crystalline waterproof coating layer (b1) coated on the upper surface of the concrete cushion layer (a2) in the defined area around the periphery of the anchor rod body (8), and an epoxy asphalt anticorrosive coating layer (b2), a high polymer self-adhesive waterproof coiled material layer (b3), and a non-asphalt-based high polymer self-adhesive adhesive film waterproof coiled material layer (b4) coated in turn from bottom to top and covering the entire concrete cushion layer (a2) on the cement-based capillary crystalline waterproof coating layer (b1).

5. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 3, characterized in that: The waterproof system further comprises a waterproof rubber sleeve ring (b5) sleeved on the outside of the steel strand, which is located at the bottom of the prestress transmission device (1) and has a lower end surface tightly bonded with the upper end surface of the waterproof layer (a3).

6. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 5, characterized in that: The waterproof system further comprises a CPS waterproof sealant layer (b6) arranged between the lower end surface of the prestress transmission device (1) and the upper end surface of the waterproof rubber sleeve ring (b5).

7. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 6, characterized in that: The waterproof system further comprises a water-swelling sealant (b7) coated on the outer surface of the steel strand in the prestress transmission device (1) and the steel sleeve (4).

8. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 7, characterized in that: The waterproof system comprises a cement paste plugging layer (b8) poured in the steel sleeve (4), and the top surface of the cement paste plugging layer (b8) is lower than the top surface of the concrete cushion layer (a2).

9. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 8, characterized in that: The waterproof system further comprises a non-solidified asphalt waterproof oil paste sealant layer I (b9) filled in the inner ring of the waterproof rubber sleeve ring (b5) and the enclosed space on the upper end of the cement paste plugging layer (b8).

10. The waterproof joint of the anti-floating anchor rod tensioning end according to claim 9, characterized in that: The waterproof system comprises a non-solidified asphalt waterproof oil paste sealant layer II (b10) coated at the joint between the bottom of the prestress transmission device (1) and the waterproof layer (a3).

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