Building pressure type line rod tension anchoring type corrosion resistance impermeable prestressed anti floating anchor rod

Abstract

The application discloses a pressure type line rod tensioning anchoring type anticorrosion and anti-permeation prestress anti-floating anchor rod for buildings, which comprises a water stop / tensioning end assembly, an anchoring cable body assembly and an anchoring bearing body assembly; the water stop / tensioning end assembly comprises a settlement type anchor pad, a finished rolled threaded steel, a metal bellows, an anchor connector, a steel strand fixing plate and a water stop steel ring; the upper part of the settlement type anchor pad is arranged in a surface layer, the lower part is arranged in a bottom plate, the upper part of the settlement type anchor pad is in a bowl-shaped structure comprising an anchor cable space, the bottom part is in a disc-shaped structure, and the middle part comprises a threaded steel hole which is communicated with the anchor cable space and penetrates through the disc-shaped structure; the finished rolled threaded steel penetrates through the anchor cable space and the threaded steel hole, the two ends of the finished rolled threaded steel are provided with threaded sections, and the upper end of the finished rolled threaded steel is fixedly arranged in the anchor cable space through the anchor connector. Therefore, the plurality of steel strands only extend to the bottom end of the water stop / tensioning end assembly and are located at the bottom of the floor, so that the water seepage phenomenon can be well prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction, in particular to a pressure type linear rod tension anchoring type corrosion resistant and impermeable prestressed anti-floating anchor rod for building. BACKGROUND

[0002] With the world economy entering a high-speed development stage in the 21st century, especially the development speed of China's economy leading the world, which makes our country's infrastructure has also been unprecedented development mechanism improvement and technological innovation, with the arrival of the era of promoting domestic demand and promoting infrastructure development, pressure type prestressed anti-floating anchor rod from research and development to production, and also has established its important position in the field of building foundation engineering. The traditional anti-floating anchor rod is mainly divided into two types of pressure type and tension type, the base material uses ordinary threaded steel bar or finished threaded steel, or uses steel strand. Because the early anti-floating anchor rod has low use standard requirements, the corresponding defects existing in the original have gradually been exposed. For example: low anchoring uplift resistance, poor disturbance stability, weak corrosion resistance and impermeability, etc. cause the safety accidents of building foundation bearing beam shear fracture, misplacement, cracking, leakage, etc. Based on this, the state has introduced JGJ476-2019 "Building Engineering Anti-floating Technical Standard", which puts forward corresponding requirements for the design of anchor rod, and makes technical requirements for the anchoring uplift resistance, length, corrosion resistance and impermeability of different types of anti-floating anchor rod in different strata.

[0003] The anchoring structure form of the pressure type prestressed anti-floating anchor rod currently developed and applied in the market adopts an extrusion type anchoring mode, that is, an extrusion sleeve cooperates with an extrusion spring to achieve high-pressure extrusion engagement, the rod body parent material uses UPS-15.2-1860-JG / T161-2016 non-bonding steel strand, and in the case of not considering the concrete strength of the pile body, the anchoring property of the extrusion type anchoring can meet the requirement of ≥95% in GB / T14370-2015, which is more than twice the design strength requirement of the anchoring uplift resistance. Although this anchoring form is the most commonly used in prestressed anchoring technology, and is a relatively mature and stable anchoring mode, this processing and assembly mode needs a single steel strand to shuttle through each component, and then is extruded and formed on a hydraulic extruder. The extrusion process is not only time-consuming and labor-intensive, but also slow in efficiency, and has a large site utilization rate, and a low site utilization rate. The main defects of the prior art are as follows:

[0004] 1. Building construction starts from foundation construction, and a high-rise building is built on a flat ground. Therefore, the use of anti-floating anchor rod in building construction has a primary demand problem, that is, the use of materials and short construction period.

[0005] 2. The ground structure of each project building location is different, and the building type is different, so the specification length and quantity of the anti-floating anchor rod are different in the design. When the ground layer is different from the design survey during the construction, the length of the anti-floating anchor rod needs to be changed in time.

[0006] Due to the constraints of the two factors mentioned above, the production and assembly of the anchor rod in the prior art almost must adopt the form of "made to sell", and cannot realize advance preparation. When all project supply peaks are concentrated in a certain period, personnel, equipment and site are very nervous, which causes a bottleneck problem. At this time, the existing construction method can only adopt the method of prolonging the working time to relieve, and further causes the working time of the construction personnel to be prolonged, overwork, and the construction quality to be easily reduced, and even the work injury event due to overwork. Therefore, the development and layout of the company are greatly restricted. For example: the company registers a branch in other places. If the anchor rod production process is "made to sell", the corresponding production personnel, equipment and site must be equipped in the registered place. Not only the investment cost is increased, but also how to utilize the existing scale configuration and personnel to realize and resolve the contradiction and realize the development demand beneficial to the company becomes an important problem to be solved.

[0007] In addition, the multiple steel strands of the prior art extend into the settlement type anchor pad of the water stop / tension end assembly, which causes too many sealing pads, and water seepage easily penetrates upward along the steel cable and causes construction quality problems.

[0008] The information disclosed in this background section is intended only to increase an understanding of the general context of the present application, and it should not be taken as an acknowledgement that this information forms part of the prior art that is already known in this field. SUMMARY

[0009] The purpose of the present application is to provide a building pressure type line rod tensioning and anchoring type corrosion resistant and impermeable prestressed anti-floating anchor rod, which has multiple steel strands extending to the bottom end of the water stop / tension end assembly and located at the bottom of the floor, which can well prevent water seepage.

[0010] To achieve the above object, the application provides a pressure type line rod tensioning anchoring type corrosion and seepage resistant prestressed anti-floating anchor rod for buildings, which comprises a water stop / tensioning end assembly, an anchoring cable body assembly and an anchoring load carrier assembly; the water stop / tensioning end assembly is arranged at the uppermost end of the anti-floating anchor rod and is arranged in a surface layer, a bottom plate and a cushion layer; the anchoring cable body assembly comprises a plurality of unbonded steel strands and a central grouting pipe, the upper ends of the unbonded steel strands are arranged in the water stop / tensioning end assembly, and the unbonded steel strands are uniformly arranged around the central grouting pipe, and the lower end of the central grouting pipe comprises an external thread; the anchoring load carrier assembly is arranged at the lowermost part of the anti-floating anchor rod and is located at the bottom of an anchor rod hole, and the anchoring load carrier assembly can be quickly assembled and connected with the anchoring cable body assembly; the water stop / tensioning end assembly comprises a settlement type anchor pad, a finished rolled threaded steel, a metal bellows, an anchor connector, a steel strand fixing plate and a water stop steel ring; the upper part of the settlement type anchor pad is arranged in the surface layer, the lower part is arranged in the bottom plate, the upper part of the settlement type anchor pad has a bowl-shaped structure comprising an anchor cable space, the bottom part has a disc-shaped structure, and the middle part comprises a threaded steel hole which is communicated with the anchor cable space and penetrates through the disc-shaped structure; the finished rolled threaded steel penetrates through the anchor cable space and the threaded steel hole, the two ends of the finished rolled threaded steel are provided with threaded segments, and the upper end of the finished rolled threaded steel is fixedly arranged in the anchor cable space through the anchor connector; the metal bellows is arranged in the lower part of the bottom plate, the upper end of the metal bellows is sleeved on the disc-shaped structure of the bottom part of the settlement type anchor pad and is sealed, the anchor connector is arranged in the bottom end of the metal bellows, the central threaded hole of the anchor connector is connected with the lower threaded segment of the finished rolled threaded steel, the steel strand fixing plate is arranged in the bottom part of the bottom plate, the bottom surface of the steel strand fixing plate is attached to the top surface of the cushion layer, the top surface is attached to the bottom surface of the anchor connector, the upper ends of the unbonded steel strands pass through a plurality of wire passing holes of the steel strand fixing plate and are anchored to the anchor connector, and the upper part of the water stop steel ring is arranged in the lower part of the bottom plate and the lower part is arranged in the cushion layer, the water stop steel ring has a cylindrical structure, and the upper part of the cylindrical structure is sleeved on the outside of the steel strand fixing plate and the lower part of the metal bellows.

[0011] In a preferred embodiment, the settlement type anchor pad further comprises a high-pressure grouting hole, a plurality of reinforcing ribs and a cotton thread groove; the upper end of the high-pressure grouting hole is arranged at one side of the anchor cable space, the lower end is arranged at the same side of the threaded steel hole, and the high-pressure grouting hole penetrates through the top surface of the anchor cable space and the bottom surface of the disc-shaped structure; the plurality of reinforcing ribs are uniformly distributed on the outer wall of the bowl-shaped structure except the high-pressure grouting hole; and the cotton thread groove is annularly arranged on the outer wall of the disc-shaped structure and is used for winding the grouting cotton thread to seal the gap between the outer wall of the disc-shaped structure and the inner wall of the metal bellows.

[0012] In a preferred embodiment, the cross section of the reinforcing rib is triangular, and the number of the reinforcing ribs is three.

[0013] In a preferred embodiment, the anchor connector comprises a line rod connector anchor and a working clamp; a center screw hole is arranged in the center of the line rod connector anchor, the line rod connector anchor further comprises a plurality of inverted conical anchor line holes which are uniformly distributed around the center screw hole; the working clamp is embedded in the plurality of inverted conical anchor line holes in a two-lobed shape; wherein a plurality of unbonded steel strands are arranged inside the two-lobed working clamp by removing the top end of the outer PE protective tube, and the two-lobed working clamp is embedded in the inverted conical anchor line hole to anchor the plurality of unbonded steel strands together with the line rod connector anchor.

[0014] In a preferred embodiment, the water stop steel ring comprises a ring-shaped wing arranged in the upper part of the cylindrical structure, and the bottom surface of the ring-shaped wing is attached to the top surface of the cushion layer.

[0015] In a preferred embodiment, the water stop / tensioning end assembly further comprises a spiral rib, a fixed grouting stop cement, a seal anchor C40 grouting material, an epoxy resin, and an anchor under steel mesh; the spiral rib is wound on the outer wall of the metal bellows; the fixed grouting stop cement is filled in the space above the top of the cylindrical structure of the water stop steel ring, the lower part of the outer wall of the metal bellows, and the top surface of the steel strand fixing plate; the seal anchor C40 grouting material is filled in the anchor cable space of the settlement type anchor cushion plate, the high-pressure grouting hole, the metal bellows, and the gap between the inner wall of the metal bellows and the outer wall of the line rod connector anchor; the epoxy resin is arranged at the bowl opening of the bowl-shaped structure of the settlement type anchor cushion plate; and the anchor under steel mesh is buried below the top surface of the bottom surface.

[0016] In a preferred embodiment, the anchor cable assembly further comprises a sealing pressure plate and gasket, and a plurality of conical sealing rings; the sealing pressure plate and gasket are arranged at the bottom end of the anchor cable assembly, the sealing pressure plate comprises a center through hole and a plurality of wire passing through holes and connection through holes arranged around the center through hole, the center through hole is used for the center grouting pipe to pass through, and each wire passing through hole passes through an unbonded steel strand; each conical sealing ring is sleeved outside an unbonded steel strand, and the sealing pressure plate and gasket are pressed on the large end surface of the plurality of conical sealing rings.

[0017] In a preferred embodiment, the anchoring carrier assembly comprises a guide support, a carrier plate, a working anchor ring and a working clamp, a PE spring fixing seat, a pressure spring and a fixing seat reinforcing plate; the guide support is in the shape of an equilateral tripod when viewed from the axial direction, the bottom end of the guide support is extruded into shape by the guide support constraint ring through the pressure pipe machine, the top end of the guide support is provided with a threaded section, the lower part of the threaded section is extruded into shape together with the top pressure pipe and the extruded spring through the pressure pipe machine; the outer edge of the carrier plate is connected with the threaded section of the guide support through high-strength internal hexagonal bolts / nuts; the upper plane of the working anchor ring is arranged in abutment with the lower plane of the carrier plate; the working clamp is in the shape of two petals and is embedded in the outer inverted taper hole of the working anchor ring; the upper plane of the PE spring fixing seat is arranged in abutment with the lower plane of the working anchor ring; the pressure spring is arranged in the spring normal position hole of the PE spring fixing seat; the upper plane of the fixing seat reinforcing plate is arranged in abutment with the lower plane of the fixing seat reinforcing plate; wherein the outer thread of the central grouting pipe passes through the central through hole of the sealing pressure plate, the central normal taper hole of the working anchor ring, the central hole of the PE spring fixing seat, the central hole of the fixing seat reinforcing plate, and is locked into one body with the first locking nut and the second locking nut, the pressure spring abuts against the lower end surface of the working clamp to keep the working clamp embedded in the outer inverted taper hole of the working anchor ring; wherein a plurality of tapered sealing rings are respectively sleeved on the outer thread of the central grouting pipe and the outer layer PE protective pipe of the plurality of unbound steel strands, the sealing pressure plate presses the plurality of tapered sealing rings into the central normal taper hole and the outer peripheral normal taper hole of the carrier plate under the action of the first locking nut and the second locking nut, the part of the plurality of unbound steel strands without the outer layer PE protective pipe is clamped in the outer inverted taper hole of the working anchor ring by the working clamp.

[0018] In a preferred embodiment, the anchoring carrier assembly further comprises a fixed end anchor sealing cover, an O-shaped sealing ring, a combined sealing ring and an M6 hexagonal bolt; the fixed end anchor sealing cover is arranged outside the working anchor ring, the PE spring fixing seat and the fixing seat reinforcing plate, the bottom end of the outer thread of the central grouting pipe passes through the central hole of the bottom of the fixed end anchor sealing cover, and the fixed end anchor sealing cover is pressed onto the lower plane of the carrier plate through the second locking nut; the O-shaped sealing ring is arranged in the sealing groove on the lower plane of the carrier plate, and the upper edge of the fixed end anchor sealing cover is pressed on the O-shaped sealing ring; the combined sealing ring is arranged at the connection between the central hole of the bottom of the fixed end anchor sealing cover and the outer thread of the central grouting pipe; the M6 hexagonal bolt passes through the M6 bolt through hole of the fixing seat reinforcing plate, the M6 bolt hole of the PE spring fixing seat, the M6 bolt connection hole of the working anchor ring, the M6 bolt through hole of the carrier plate and the connection through hole of the sealing pressure plate, and is locked through the M6 hexagonal nut and the flat washer to assist the first locking nut and the second locking nut.

[0019] In a preferred embodiment, the number of M6 hexagonal bolts is at least two.

[0020] Compared with the prior art, the building pressure type line rod tension anchoring type corrosion-resistant anti-permeation prestressed anti-floating anchor rod has the following beneficial effects:

[0021] 1、 This scheme sets the connection between the multiple steel strands and the water stop / tension end assembly at the anchor connector at the bottom of the bottom plate, greatly reducing the water seepage points at the metal corrugated pipe and the settlement type anchor pad plate, and replacing the steel strand with the fine rolled threaded steel for the anchoring connection between the settlement type anchor pad plate and the anchor connector, which can greatly increase the stress intensity at the water stop / tension end assembly.

[0022] 2、 This scheme changes the existing extrusion sleeve anchoring structure form to realize modular assembly mode, improve assembly efficiency and meet the anchoring uplift resistance and disturbance stability of the prestressed anchor rod anchoring body: a The main structure of the anchor rod is designed in front of the anchor rod bearing end, which references the most commonly used and most stable anchoring mode of a linear connector in prestressed anchoring technology, that is, the compression and rebound force of the pressure spring is used to cooperate with the working clamping piece and the anchor ring conical hole to make the working clamping piece form an opening and occlusion action when the steel strand is pulled, which meets the basic requirements of modular assembly mode. b The bearing body adopts the above anchoring structure to realize rapid installation, and the assembled bearing body realizes segmented assembly when idle, which reduces the original extrusion equipment and personnel, improves the site utilization rate, and reduces the convenience of secondary anchor rod forming assembly. Even at the construction site, a few small tools can quickly complete the finished product assembly of the anchor rod. c The rod body parent material adopts UPS-15.2-1860-JG / T161-2016 non-bonding steel strand, which meets the requirement of ≥95% in GB / T14370-2015 without considering the strength of the pile body concrete, which is more than 2 times the design strength requirement of the anchor rod. The use of non-bonding steel strand in the stress structure has good anchoring uplift resistance and disturbance stability, and also solves the problem of corrosion prevention of the bus.

[0023] 3、Solve the problem of underground foundation water seepage through the gap of the structure body connecting part: According to the requirements of JGJ476-2019 standard in article 7.5.10, the water-proof grade of the connecting part of the anchor rod and the underground foundation structure is different. There are four parts that may seep in the anchor rod anchoring bearing body structure:

[0024] a Connection leakage point 1, the connection between the sealing cover and the center grouting pipe is sealed by setting a conical port on the sealing cover connection port, using a matched combination of sealing rings, center grouting pipes and locking nuts.

[0025] b Connection leakage point 2, the connection between the sealing cover and the bearing plate is sealed by processing and setting an O-ring slot on the bearing plate, using an O-ring, a sealing cover, a bearing plate, a center grouting pipe and a locking nut.

[0026] c Connection leakage point 3, the bearing plate is connected with the passage of the unbonded steel strand, a tapered hole is arranged on the bearing plate by machining, and sealing is completed by using a tapered sealing ring, a sealing pressing plate, and M6 bolts and nuts.

[0027] d Connection leakage point 4, the reinforcing plate, the PE spring fixing seat, the anchor plate, and the bearing plate are connected by M6 bolts, and a perforated gap is sealed by using a rubber sealing pad.

[0028] 4. The anti-rust and anti-corrosion problem of the anchor rod structure is solved, and the design life of 50 years is met. In order to meet the requirements of the anchor rod corrosion design in the 7.5.9 clause of the JGJ476-2019 standard, the design scheme of leakage and corrosion resistance is considered when the anchor bearing body is initially designed and planned. The sealing cover form is used for the sealing of the whole part of the bearing anchor end, the sealing cover is filled with anticorrosive medium, and the internal parts can be prevented from rusting and water infiltration.

[0029] In summary, the anchor rod modular assembly method is realized, the complicated extrusion process and equipment are removed, the installation efficiency is improved, the bearing body can be prepared in advance for inventory to solve the convenience of assembly of off-site sales, the clamping piece type anchoring force is better than the extrusion type anchoring, the bearing end structure form can be arbitrarily assembled into a segmented bearing structure form, and the number of steel strands can be changed from 1 to N. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of the anti-floating anchor rod according to an embodiment of the present application;

[0031] Figure 2 is a schematic diagram of the structure of the water stop / tensioning end assembly according to an embodiment of the present application;

[0032] Figure 3 is a schematic diagram of the enlarged structure of the water stop / tensioning end assembly according to an embodiment of the present application;

[0033] Figure 4 is a schematic diagram of the top view structure of the settlement type anchor pad according to an embodiment of the present application;

[0034] Figure 5 is a schematic diagram of the bottom view structure of the settlement type anchor pad according to an embodiment of the present application;

[0035] Figure 6 is Figure 4 a sectional view structure schematic diagram of A-A of

[0036] Figure 7 is a front view structure schematic diagram of the wire rod connector anchor according to an embodiment of the present application;

[0037] Figure 8Fig. 2 is a side sectional view of a line rod connector anchor according to an embodiment of the present application;

[0038] Figure 9 Fig. 3 is a front view of a working clamp according to an embodiment of the present application;

[0039] Figure 10 Fig. 4 is a side view of a working clamp according to an embodiment of the present application;

[0040] Figure 11 Fig. 5 is a structural view of an anchoring cable assembly according to an embodiment of the present application;

[0041] Figure 12 Fig. 6 is a structural view of an anchoring carrier assembly according to an embodiment of the present application;

[0042] Figure 13 Fig. 7 is a front view of a PE spring fixing seat according to an embodiment of the present application;

[0043] Figure 14 Fig. 8 is a side sectional view of a PE spring fixing seat according to an embodiment of the present application;

[0044] Figure 15 Fig. 9 is a front view of a fixing seat reinforcing plate according to an embodiment of the present application;

[0045] Figure 16 Fig. 10 is a side sectional view of a fixing seat reinforcing plate according to an embodiment of the present application;

[0046] Figure 17 Fig. 11 is a front view of a sealing press plate according to an embodiment of the present application;

[0047] Figure 18 Fig. 12 is a side sectional view of a sealing press plate according to an embodiment of the present application;

[0048] Figure 19 Fig. 13 is a front view of a PE spring according to an embodiment of the present application; Figure 11 Fig. 14 is an enlarged structural view of I in Fig. 13;

[0049] Figure 20 Fig. 15 is an installation and force bearing schematic view of an anti-floating anchor rod according to an embodiment of the present application.

[0050] Explanation of main reference numerals:

[0051] 1 - settlement anchor pad, 101 - anchor cable space, 102 - threaded steel hole, 103 - reinforcing bar, 104 - cotton line groove, 2 - cotton line for stopping grout, 3 - spiral rib, 4 - metal bellows, 5 - anchor connector, 501 - wire rod connector anchor, 5011 - central screw hole, 5012 - inverted conical anchor line hole, 6 - fixed grout stopping cement, 7 - steel strand fixing plate, 8 - water stop steel ring, 9 - anchor lower reinforcement mesh, 10 - epoxy resin, 11 - anchor sealing C40 grouting material, 12 - finished rolled threaded steel, 13 - anchor connector, 14 - high pressure grouting hole, 1401 - internal thread, 15 - isolation support, 16 - C35 fine stone concrete, non-bonded steel strand, 18 - first locking nut, 19 - M6 hexagonal nut, 20 - flat washer, 21 - M12 high-strength internal hexagonal bolt / nut, 22 - extrusion section, 23 - top compression pipe, 24 - extrusion spring, 25 - fixed seat reinforcing plate, 2501 - M6 bolt through hole, 26 - sealing cover, 27 - M6 hexagonal bolt, 28 - second locking nut, 29 - support steel strand, 30 - guide frame restraint ring, 31 - spiral rib, 32 - central grouting pipe, 33 - sealing compression plate, 3301 - connecting through hole, 3302 - wire passing through hole, 3303 - central through hole, 34 - conical sealing ring, 35 - O-shaped sealing ring, 36 - bearing plate, 37 - working anchor ring, 38 - working clamping piece, 39 - PE spring fixing seat, 3901 - spring alignment hole, 3902 - M6 bolt hole, 40 - compression spring, 41 - corrosion-resistant medium, 42 - combined sealing ring. DETAILED DESCRIPTION

[0052] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0053] Unless otherwise clearly indicated, throughout the specification and claims, the term "comprise" or variations such as "comprises" or "comprising" will be understood to imply the inclusion of a stated element or group of elements but not the exclusion of any other element or group of elements.

[0054] As Figures 1 to 3 To achieve the above-mentioned purposes, the present application provides a pressure type wire rod tensioning anchoring type corrosion resistant impermeable prestressed anti-floating anchor rod for building, which comprises a water stopping / tensioning end assembly, an anchoring cable body assembly and an anchoring bearing body assembly; the water stopping / tensioning end assembly is arranged at the uppermost end of the anti-floating anchor rod, and the water stopping / tensioning end assembly is arranged in a surface layer, a bottom plate and a cushion layer; the anchoring cable body assembly comprises a plurality of The unbonded steel strand 17 and the center grouting pipe 32, the upper end of the plurality of unbonded steel strands 17 is arranged in the water stop / tension end assembly, and the plurality of unbonded steel strands 17 are uniformly arranged around the center grouting pipe 32, and the lower end of the center grouting pipe 32 comprises an external thread; the anchoring carrier assembly is arranged at the lowermost part of the anti-floating anchor rod and is located at the bottom of the anchor hole, and the anchoring carrier assembly can realize rapid assembly connection with the anchoring cable assembly; the water stop / tension end assembly mainly comprises a settlement type anchor pad 1, a finished threaded steel 12, a metal corrugated pipe 4, an anchor connector 5, a steel strand fixing plate 7 and a water stop steel ring 8 and the like; the upper part of the settlement type anchor pad 1 is arranged in the surface layer, and the lower part is arranged in the bottom plate, the upper part of the settlement type anchor pad 1 is in a bowl-shaped structure comprising an anchor cable space 101, the bottom part is in a disc-shaped structure, and the middle part comprises a threaded steel hole 102 which communicates with the anchor cable space 101 and penetrates the disc-shaped structure; the finished threaded steel 12 penetrates the anchor cable space 101 and the threaded steel hole 102, and the two ends of the finished threaded steel 12 are provided with threaded segments, and the upper end of the finished threaded steel 12 is fixedly arranged in the anchor cable space 101 through the anchor connector 13; the metal corrugated pipe 4 is arranged in the lower part of the bottom plate, the upper end of the metal corrugated pipe 4 is sleeved on the disc-shaped structure at the bottom of the settlement type anchor pad 1 and is sealed; the anchor connector 5 is arranged inside the bottom end of the metal corrugated pipe 4, and the center threaded hole of the anchor connector 5 is connected with the lower end threaded segment of the finished threaded steel 12; the steel strand fixing plate 7 is arranged in the bottom of the bottom plate, the bottom surface of the steel strand fixing plate 7 is attached to the top surface of the cushion layer, the top surface is attached to the bottom surface of the anchor connector 5, and the upper end of the plurality of unbonded steel strands 17 is anchored with the anchor connector 5 after penetrating the plurality of wire holes of the steel strand fixing plate 7; the upper part of the water stop steel ring 8 is arranged in the lower part of the bottom plate, and the lower part is arranged in the cushion layer, the water stop steel ring 8 is in a cylindrical structure, and the upper part of the cylindrical structure is sleeved outside the lower part of the steel strand fixing plate 7 and the metal corrugated pipe 4.

[0055] As Figures 4 to 6As shown, in some embodiments, the sinking anchor plate 1 further includes a high-pressure grouting hole 14, multiple reinforcing ribs 103, and a cotton thread groove 104; the upper end of the high-pressure grouting hole 14 is located on one side of the anchor cable space 101, and the lower end is located on the same side of the threaded steel hole 102. The high-pressure grouting hole 14 extends from the top surface of the anchor cable space 101 through the bottom surface of the disc-shaped structure, and the upper end of the high-pressure grouting hole 14 is provided with an internal thread for connection with the grouting pipe; multiple reinforcing ribs 103 are evenly distributed on the outer wall of the bowl-shaped structure except for the high-pressure grouting hole 14. The cross-section of the reinforcing rib 103 is triangular, and there are three reinforcing ribs 103; the cotton thread groove 104 is arranged around the outer wall of the disc-shaped structure. The cotton thread groove 104 is used to wrap the grout-stopping cotton thread to seal the gap between the outer wall of the disc-shaped structure and the inner wall of the metal corrugated pipe 4. The high-pressure grouting holes 14 and three reinforcing ribs 103 in this application are evenly distributed and spaced at 90° angles. The wall thickness of the high-pressure grouting holes 14 is similar to the wall thickness of the anchor cable space 101, and can also serve as reinforcing ribs 103.

[0056] like Figures 7 to 10 As shown, in some embodiments, the anchor connector 13 includes a pole connector anchor 501 and a working clamp 38; a central screw hole 5011 is located at the center of the pole connector anchor 501, and the pole connector anchor 501 also includes a plurality of inverted conical anchor holes 5012, which are evenly distributed around the central screw hole 5011; the working clamp 38 is embedded in the plurality of inverted conical anchor holes 5012 in a bipartite shape; wherein the top ends of a plurality of unbonded steel strands 17 with the outer PE protective tube removed are inserted into the two working clamps 38, and the two working clamps 38 are embedded in the inverted conical anchor holes 5012 to anchor the plurality of unbonded steel strands 17 to the pole connector anchor 501.

[0057] Please see Figure 3 In some embodiments, the water-stop steel ring 8 includes an annular protective wing disposed around the upper part of the cylindrical structure, with the bottom surface of the annular protective wing adhering to the top surface of the padding layer.

[0058] Please see Figure 3In some embodiments, the water stop / tension end assembly further comprises spiral rib 3, fixed grout-stopping cement 6, anchoring C40 grouting material 11, epoxy resin 10, and anchor lower steel mesh 9; spiral rib 3 is wound on the outer wall of metal bellows 4; fixed grout-stopping cement 6 is filled in the space above the upper part of the inner part of the cylindrical structure of water stop steel ring 8 and the lower part of the outer wall of metal bellows 4 and the top surface of steel strand fixing plate 7; anchoring C40 grouting material 11 is filled in the anchor cable space 101 of settlement type anchor pad 1, in high-pressure grouting hole 14, in metal bellows 4, and in the gap between the inner wall of metal bellows 4 and the outer wall of line pole connector anchor 501; epoxy resin 10 is covered at the bowl opening of the bowl-shaped structure of settlement type anchor pad 1; anchor lower steel mesh 9 is buried below the top surface of the bottom surface.

[0059] As shown in Figure 11 In some embodiments, the anchoring cable assembly further comprises sealing press plate 33 and gasket and a plurality of conical sealing rings 34; sealing press plate 33 and gasket are arranged at the bottom end of the anchoring cable assembly, sealing press plate 33 comprises central through hole 3303 and a plurality of wire passing through holes 3302 and connecting through holes 3301 arranged around central through hole 3303, central through hole 3303 is used for the penetration of central grouting pipe 32, and each wire passing through hole 3302 penetrates one unbonded steel strand 17; each conical sealing ring 34 is sleeved on one unbonded steel strand 17, and sealing press plate 33 and gasket are pressed on the large end surface of a plurality of conical sealing rings 34.

[0060] As shown in Figures 12 to 18 In some embodiments, the anchoring load carrier assembly comprises guide support, load carrier plate 36, working anchor ring 37 and working clamping piece 38, PE spring fixing seat 39, pressure spring 40, and fixing seat reinforcing plate 25; guide support is in equilateral tripod structure when viewed from the axial direction, the bottom end of guide support is connected with support Steel strands 29 are extruded and formed by mutual extrusion, the top end of guide support is provided with threaded section, the lower part of threaded section is connected with support The steel strands 29 are extruded together into the extruded section 22 by a pipe press with an extrusion force of at least 90T; the outer edge of the bearing plate 36 is connected to the threaded section of the guide bracket by M12 high-strength internal hexagonal bolts / nuts 21; the upper plane of the working anchor ring 37 is arranged to fit the lower plane of the bearing plate 36; the working clamping piece 38 is embedded in the outer inverted taper hole of the working anchor ring 37 in a two-lobed shape; the upper plane of the PE spring fixing seat 39 is arranged to fit the lower plane of the working anchor ring 37; the pressure spring 40 is arranged in the spring normal position hole 3901 of the PE spring fixing seat 39; the upper plane of the fixing seat reinforcing plate 25 is arranged to fit the lower plane of the fixing seat reinforcing plate 25; the outer thread of the center grouting pipe 32 passes through the center through hole 3303 of the sealing pressure plate 33, the center normal taper hole of the working anchor ring 37, the center hole of the PE spring fixing seat 39, the center hole of the fixing seat reinforcing plate 25, and is locked together with the first locking nut 18 and the second locking nut 28, and the pressure spring 40 abuts against the lower end surface of the working clamping piece 38 to keep the working clamping piece 38 embedded in the outer inverted taper hole of the working anchor ring 37; a plurality of tapered sealing rings 34 are respectively sleeved on the outer thread of the center grouting pipe 32 and the outer PE protective pipe of the plurality of unbonded steel strands 17, and the sealing pressure plate 33 presses the plurality of tapered sealing rings 34 into the center normal taper hole and the outer normal taper hole of the bearing plate 36 under the action of the first locking nut 18 and the second locking nut 28, and the part of the plurality of unbonded steel strands 17 without the outer PE protective pipe is clamped in the outer inverted taper hole of the working anchor ring 37 by the working clamping piece 38.

[0061] Please refer to Figure 12 In some embodiments, the anchoring bearing assembly further comprises a fixed-end anchor sealing cover 26, an O-shaped sealing ring 35, a combined sealing ring 42, and an M6 hexagonal bolt 27; the fixed-end anchor sealing cover 26 covers the working anchor ring 37, the PE spring fixing seat 39, and the fixing seat reinforcing plate 25, the bottom end of the outer thread of the center grouting pipe 32 passes through the center hole at the bottom of the fixed-end anchor sealing cover 26, and then the fixed-end anchor sealing cover 26 is pressed onto the lower plane of the bearing plate 36 by the second locking nut 28; the O-shaped sealing ring 35 is arranged in the sealing groove on the lower plane of the bearing plate 36, and the upper edge of the fixed-end anchor sealing cover 26 is pressed on the O-shaped sealing ring 35; the combined sealing ring 42 is arranged at the connection between the center hole at the bottom of the fixed-end anchor sealing cover 26 and the outer thread of the center grouting pipe 32; the M6 hexagonal bolt 27 passes through the M6 bolt through hole 2501 of the fixing seat reinforcing plate 25, the M6 bolt hole 3902 of the PE spring fixing seat 39, the M6 bolt connection hole of the working anchor ring 37, the M6 bolt through hole of the bearing plate 36, and the connection through hole 3301 of the sealing pressure plate 33, and then the M6 hexagonal nut 19 and the flat washer 20 assist the first locking nut 18 and the second locking nut 28 to be locked. The number of M6 hexagonal bolts 27 in this embodiment is at least two, but the present application is not limited thereto.

[0062] Please refer to Figures 13 to 14 In some embodiments, the PE spring fixing seat 39 includes a plurality of spring positioning holes 3901 matched with the number of the plurality of unbonded steel strands 17. The spring positioning hole 3901 is a stepped hole, the small end diameter of the stepped hole is matched with the maximum outer diameter of the compression spring 40, and the purpose is to ensure that the compression spring 40 and the unbonded steel strand 17 are kept coaxial, and the minimum inner diameter of the compression spring 40 also needs to be slightly larger than the diameter of the internal steel bar of the unbonded steel strand 17 after removing the outer PE sheath, so that the internal steel bar can be inserted into the compression spring 40. The large end diameter of the stepped hole is also slightly larger than the large end diameter of the working clamp 38, which is set so that when the internal steel bar is inserted from the small end of the working clamp 38, the external force overcomes the tension of the compression spring 40 to make the working clamp 38 move backward and open to allow the internal steel bar to be inserted. However, the large end diameter of the working clamp 38 when opened cannot be larger than the large end diameter of the stepped hole, because the large end of the working clamp 38 needs to enter the large end of the stepped hole to ensure the quick connection of the unbonded steel strand 17 with the working clamp 38 and the working anchor ring 37.

[0063] Please refer to Figures 15 to 16 In some embodiments, the fixing seat reinforcing plate 25 is mainly arranged to resist the compression spring 40, and also has the function of assisting the locking of the first locking nut 18 and the second locking nut 28 through at least two M6 hexagonal bolts 27.

[0064] Please refer to Figures 17 to 18 As shown, in some embodiments, the sealing pressure plate 33 mainly functions to press the conical sealing ring 34 to maintain a sealed state between the bearing plate 36.

[0065] As shown Figures 19 to 20 Please refer to Figure 12 In some embodiments, the wire passing hole 3302 of the sealing pressure plate 33 is used for the unbonded steel strand 17 to pass through, and the sealing pressure plate 33 needs to cooperate with a gasket to press the conical sealing ring 34. The diameter H of the connecting hole 3301 of the sealing pressure plate 33 needs to be larger than the maximum diameter h of the M6 hexagonal nut 19, because there is already an M6 hexagonal nut 19 locked on the bearing plate 36 below the sealing pressure plate 33. In order to ensure that the M6 hexagonal nut 19 does not interfere with the sealing pressure plate 33, and to avoid the problem that the sealing pressure plate 33 cannot press the conical sealing ring 34 tightly and cannot guarantee the sealing effect, the above structure is specially set. When the other M6 hexagonal nut 19 and the M6 hexagonal bolt 27 are locked to make the sealing pressure plate 33 press the conical sealing ring 34 tightly, a gasket needs to be used for cooperation. The outer diameter of the gasket is larger than the diameter of the connecting hole 3301, and the inner diameter is matched with the outer diameter of the M6 hexagonal bolt 27.

[0066] In some embodiments, the method for assembling the building pressure profile rod tension anchoring type corrosion resistant impermeable pre-stressed anti-floating anchor rod of the present application is generally as follows: the method is to assemble the anchor rod anchoring carrier, and the assembling method comprises: firstly, using a 90T pipe pressing machine to press and form the seal pressing plate in the water stop / tension end assembly in the preparation workshop; secondly, also in the preparation workshop, using the 90T pipe pressing machine to extrude the guide bracket restraining ring 30 and the bottom of the guide bracket, and extrude the part below the top threaded segment of the guide bracket and the extruded spring 24 and the top pressing plate 23; assembling a plurality of non-bonded steel strands 17 of a prepared length with a plurality of isolation brackets, and binding the plurality of non-bonded steel strands 17 at a distance with an appropriate amount of rolling strips; first, screwing the first locking nut 18 and the gasket on the outer thread at the bottom of the center grouting pipe 32, then passing the outer thread through the connecting through hole 3301 of the seal pressing plate 33, a conical sealing ring 34, the central right-tapered hole of the bearing plate 36, the central hole of the working anchor ring 37 in turn, putting the working clamping piece 38 in each peripheral inverted tapered hole of the working anchor ring 37, then putting the pressure spring 40 into each spring right-positioning hole 3901 of the spring fixing seat, and passing the outer thread at the bottom of the center grouting pipe 32 through the central hole of the PE spring fixing seat 39, so that the upper plane of the PE spring fixing seat 39 is attached to the lower plane of the working anchor ring 37, while ensuring that each pressure spring 40 is abutted against the lower end surface of the working clamping piece 38, and finally screwing the second locking nut 28 on the outer thread at the bottom of the center grouting pipe 32, so as to assemble the seal pressing plate 33, a conical sealing ring 34, a bearing plate 36, a working anchor ring 37, a PE spring fixing seat 39, a fixing seat reinforcing plate 25, a working clamping piece 38 and a pressure spring 40 into one body; transporting the components and accessories of the water stop / tension end assembly, the components and accessories of the anchoring cable assembly and the components and accessories of the anchoring carrier assembly to the construction site, and drilling the anchor rod hole according to the design drawing requirements by the construction personnel, and making the length of the non-bonded steel strand 1713 and the length of the center grouting pipe 32 according to the actual requirements; according to the actual construction size requirements, cutting off a part of the outer PE protective tube at the lowermost end of the plurality of non-bonded steel strands 17 and exposing the internal steel bars, passing each internal steel bar through the wire passing through hole 3302 of the seal pressing plate 33 and the peripheral right-tapered hole of the bearing plate 36, and then inserting it into the working clamping piece 3818 in the peripheral inverted tapered hole of the working anchor ring 37, and buckling the internal steel bar on the working anchor ring 37 through the abutting action of the pressure spring 40 of the working clamping piece 38; using at least two M6 hexagonal bolts 27 to pass through the M6 bolt through hole 2501 of the fixing seat reinforcing plate 25, the M6 bolt hole 3902 of the PE spring fixing seat 39, the M6 bolt connecting hole of the working anchor ring 37, the M6 bolt through hole of the bearing plate 36 and the connecting through hole 3301 of the seal pressing plate 33, and locking by the M6 hexagonal nut 19 and the flat washer 20 auxiliary first locking nut 18 and second locking nut 28.The outer layer PE protective tube of the plurality of unbonded steel strands 17 is sealed with a conical sealing ring 34 between the outer conical hole of the bearing plate 36; the O-shaped sealing ring 35 is installed in the sealing groove of the lower plane of the bearing plate 36, and after the fixed end anchor sealing cover 26 is filled with corrosion prevention medium, it is buckled on the bearing plate 36, the working anchor ring 37, the PE spring fixing seat 39 and the fixing seat reinforcing plate 25, and the upper edge of the fixed end anchor sealing cover 26 is pressed on the O-shaped sealing ring 35, and the fixed end anchor sealing cover 26 is locked with the outer thread of the center grouting pipe 32 with a second locking nut 28; and the connection between the center hole of the fixed end anchor sealing cover 26 and the outer thread of the center grouting pipe 32 is sealed with a combined sealing ring 42.

[0067] In some embodiments, the assembly method further comprises: sleeving a straight-rib spiral sleeve at the bottom end of the anchoring cable assembly; installing the assembled anchoring cable assembly and anchoring carrier assembly into the anchor rod hole, and pouring C35 fine stone concrete into the anchor rod hole through the center grouting pipe 32; after the settlement type anchor pad 1, the finished threaded steel 12, the anchor connector 13, the metal corrugated pipe 4, the spiral rib 3, the water stop steel ring 8, etc. of the water stop / tension end assembly are assembled with the anchor connector 5 and the steel strand fixing plate in the upper part of the anchor rod hole according to the drawing requirements, filling is performed by filling C40 waterproof grouting material through the high-pressure grouting hole and sealing is performed by epoxy resin 10 glue 36, wherein the pouring of C35 fine stone concrete adopts underwater concrete pouring construction technology; and the periphery of the water stop / tension end assembly and the upper surface of the anchor rod hole are sequentially poured with cushion layer, bottom plate and surface layer, and anchor lower steel mesh 9, etc.

[0068] In summary, the building pressure type line rod tensioning anchoring type corrosion resistant impermeable prestressed anti-floating anchor rod of the application has the following advantages: the plurality of steel strands only extend to the bottom end of the water stop / tension end assembly and are located at the bottom of the floor, which can well prevent water seepage; and the modular assembly method of the anchor rod is realized by pre-assembly in the workshop, the cumbersome extrusion process and equipment are removed, the installation efficiency is improved, and the convenience of assembly of off-site sales is solved by pre-stocking of the carrier; the bearing end structure form can be arbitrarily assembled into a segmented bearing structure form; the number of steel strands of the bearing end structure form can be changed from 1 to N.

[0069] The foregoing description of specific exemplary embodiments of the application is intended to be illustrative only and is not intended to limit the application to the precise forms described. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications as are suited to the particular use contemplated. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. A pressure-type tension-anchored, corrosion-resistant, seepage-resistant, prestressed, anti-buoyancy anchor rod for construction, characterized in that, The system includes a water-stop / tensioning end assembly, an anchor cable assembly, and an anchor bearing assembly. The water-stop / tensioning end assembly is located at the uppermost end of the anti-buoyancy anchor rod and is situated within the surface layer, base plate, and cushion layer. The anchor cable assembly comprises multiple unbonded steel strands and a central grouting pipe. The upper ends of the unbonded steel strands are located within the water-stop / tensioning end assembly, and the unbonded steel strands are evenly arranged around the central grouting pipe, the lower end of which has external threads. The anchor bearing assembly is located at the lowermost part of the anti-buoyancy anchor rod and at the bottom of the anchor bolt hole. The anchor bearing assembly enables rapid assembly and connection with the anchor cable assembly. The water-stop / tensioning end assembly includes: The sinking anchor plate has its upper part set in the surface layer and its lower part set in the bottom plate. The upper part of the sinking anchor plate has a bowl-shaped structure including the anchor cable space, the bottom has a disc-shaped structure, and the middle part includes a threaded steel hole that connects to the anchor cable space and penetrates the disc-shaped structure. A precision-rolled threaded steel bar passes through the anchor cable space and the threaded steel bar hole. Both ends of the precision-rolled threaded steel bar are provided with threaded sections. The upper end of the precision-rolled threaded steel bar is fixed in the anchor cable space through an anchor connector. A metal corrugated pipe is installed in the lower part of the base plate, and the upper end of the metal corrugated pipe is fitted onto the disc-shaped structure at the bottom of the sinking anchor plate and sealed. An anchor connector is disposed inside the bottom end of the metal bellows, and the central threaded hole of the anchor connector is connected to the lower threaded section of the precision rolled threaded steel bar. A steel strand fixing plate is disposed within the bottom of the base plate. The bottom surface of the steel strand fixing plate is attached to the top surface of the padding layer, and the top surface is attached to the bottom surface of the anchor connector. The upper ends of multiple unbonded steel strands pass through multiple wire-passing holes in the steel strand fixing plate and are anchored to the anchor connector. The water-stop steel ring has its upper part set inside the lower part of the base plate and its lower part set inside the pad layer. The water-stop steel ring has a cylindrical structure, and the upper part of the cylindrical structure is sleeved on the outside of the steel strand fixing plate and the lower part of the metal corrugated pipe. The water-stop steel ring includes an annular protective wing disposed around the upper part of the cylindrical structure, and the bottom surface of the annular protective wing is in contact with the top surface of the padding layer; The sinking anchor plate also includes: The high-pressure grouting hole has its upper end located on one side of the anchor cable space and its lower end located on the same side of the threaded steel hole. The high-pressure grouting hole extends from the top surface of the anchor cable space through the bottom surface of the disc-shaped structure. Multiple reinforcing ribs are evenly distributed on the outer wall of the bowl-shaped structure, excluding the high-pressure grouting holes; and A cotton thread groove is arranged around the outer wall of the disc-shaped structure. The cotton thread groove is used to wind anti-slurry cotton thread to seal the gap between the outer wall of the disc-shaped structure and the inner wall of the metal corrugated pipe.

2. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 1, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed, and anti-buoyancy anchor rod for pressure-type straight rods. The reinforcing rib has a triangular cross-section, and there are three reinforcing ribs in total.

3. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 1, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed anti-buoyancy anchor rod for pressure-type lines. The anchor connector includes: A pole connector anchor, wherein the central screw hole is located at the center of the pole connector anchor, and the pole connector anchor further includes a plurality of inverted conical anchor holes evenly distributed around the central screw hole; and The working clip is in the form of two lobes and is embedded in the plurality of inverted conical anchor wire holes; The top ends of the multiple unbonded steel strands, with the outer PE sheath removed, are inserted into the two working clips. The two working clips are embedded in the inverted conical anchor hole to anchor the multiple unbonded steel strands to the pole connector anchor.

4. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 1, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed, anti-buoyancy anchor rod for pressure-type straight rods. The water-stop / tensioning end assembly also includes: Spiral ribs are wound around the outer wall of the metal bellows; The cement used to fix the grout is filled in the space above the upper part of the cylindrical structure of the water-stop steel ring, the lower part of the outer wall of the metal corrugated pipe, and the top surface of the steel strand fixing plate. C40 grouting material is used to fill the anchor cable space of the sinking anchor plate, the high-pressure grouting hole, the metal corrugated pipe, and the gap between the inner wall of the metal corrugated pipe and the outer wall of the line rod connector anchor. Epoxy resin, which covers the rim of the bowl-shaped structure of the sinking anchor plate; and The anchor steel mesh is embedded below the top surface of the bottom surface.

5. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 3, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed, and anti-buoyancy anchor rod for pressure-type straight rods. The anchor cable assembly also includes: A sealing plate and gasket are disposed at the bottom end of the anchor cable assembly. The sealing plate includes a central through hole and a plurality of wire-passing through holes and connecting through holes surrounding the central through hole. The central through hole is used for the central grouting pipe to pass through, and one unbonded steel strand passes through each of the wire-passing through holes. Multiple conical sealing rings, each of which is fitted over one of the unbonded steel strands, and the sealing plate and gasket are pressed against the large end face of the multiple conical sealing rings.

6. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 5, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed anti-buoyancy anchor rod for pressure-type straight rods. The anchoring load assembly includes: The guide bracket, viewed axially, has an equilateral tripod structure. The bottom end of the guide bracket is formed by pressing the guide bracket constraint ring against each other using a pipe pressing machine. The top end of the guide bracket is provided with a threaded section. The lower part of the threaded section is formed by pressing the top pipe and the compression spring together using a pipe pressing machine. The bearing plate is connected to the threaded section of the guide bracket at its outer edge by high-strength internal hex bolts; The working anchor ring has its upper surface fitted to the lower surface of the bearing plate; The working clamping piece is in the form of two lobes and is embedded in the inverted conical hole on the outer periphery of the working anchor ring; A PE spring fixing seat is provided with its upper surface conforming to the lower surface of the working anchor ring; A compression spring, which is disposed within the spring aligning hole of the PE spring holder; and The upper surface of the fixing base reinforcing plate is attached to the lower surface of the fixing base reinforcing plate; The external thread of the central grouting pipe passes through the central through hole of the sealing pressure plate, the central conical hole of the working anchor ring, the central hole of the PE spring fixing seat, and the central hole of the fixing seat reinforcing plate, and is then locked together with the first locking nut and the second locking nut. The pressure spring abuts against the lower end face of the working clamp to keep the working clamp embedded in the outer inverted conical hole of the working anchor ring. The plurality of conical sealing rings are respectively fitted onto the external threads of the central grouting pipe and onto the outer PE protective tubes of the plurality of unbonded steel strands. Under the action of the first locking nut and the second locking nut, the sealing pressure plate presses the plurality of conical sealing rings into the central positive conical hole and the outer positive conical hole of the bearing plate. The portion of the plurality of unbonded steel strands without the outer PE protective tube is clamped by the working clamp in the outer inverted conical hole of the working anchor ring.

7. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 6, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed, and anti-buoyancy anchor rod for pressure-type straight rods. The anchoring load assembly also includes: The fixed end anchor sealing cover is installed outside the working anchor ring, the PE spring fixing seat and the fixing seat reinforcing plate. After the bottom end of the external thread of the central grouting pipe passes through the central hole at the bottom of the fixed end anchor sealing cover, the fixed end anchor sealing cover is pressed onto the lower plane of the bearing plate by the second locking nut. The O-ring is disposed in the sealing groove on the lower plane of the bearing plate, and the upper edge of the fixed end anchor sealing cover is pressed on the O-ring. A combined sealing ring is disposed at the connection between the central hole at the bottom of the fixed end anchor sealing cover and the external thread of the central grouting pipe; and An M6 hex bolt passes through the M6 ​​bolt through hole of the fixing seat reinforcing plate, the M6 ​​bolt hole of the PE spring fixing seat, the M6 ​​bolt connecting hole of the working anchor ring, the M6 ​​bolt through hole of the bearing plate, and the connecting through hole of the sealing pressure plate. It is then locked by an M6 hex nut and a flat washer, with the assistance of the first and second locking nuts.

8. The prestressed anti-buoyancy anchor rod for construction, characterized in that, as described in claim 7, is a tension-anchored, corrosion-resistant, seepage-resistant, prestressed, and anti-buoyancy anchor rod for pressure-type straight rods. The number of M6 hex bolts is at least two.

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