CN218060295U - Novel anticorrosive impervious stock structure for building - Google Patents

Abstract

The utility model discloses a novel anti-corrosion and anti-permeability anchor rod structure for buildings, which comprises a plurality of steel strands arranged in an anchor rod hole, wherein the top of the anchor rod hole comprises a cushion layer, a bottom plate and a surface layer from bottom to top; the tension end anchorage device assembly is arranged at the top ends of the steel strands and is positioned in the bottom plate below the surface layer, the tension end anchorage device assembly comprises a sedimentation type wing-provided anchor backing plate which is arranged at the top of the steel strands and is positioned at the top surface of the bottom plate, and the sedimentation type wing-provided anchor backing plate is of a cylindrical structure which comprises a cylinder head part, a cylinder body part and a cylinder tail part from top to bottom, wherein the tension anchorage device of the tension end anchorage device assembly is arranged at the cylinder head part; the connecting pipe is sleeved outside the steel strands, and the upper end of the connecting pipe is hermetically connected with the lower end of the tail part of the cylinder; the water-stopping steel ring component is embedded in the bottom plate and the cushion layer at the same time, and the lower end of the connecting pipe extends into the water-stopping steel ring component; the preposed anchoring supporting body component is arranged at the other end of the steel strands. Can solve the problem of the upward seepage of the underground foundation water.

Description

Novel anticorrosive impervious stock structure for building

Technical Field

The utility model relates to a novel anticorrosive impervious stock structure for building.

Background

The traditional anti-floating anchor rod is composed of a pressure type and a tension type, a base material adopts common deformed steel bar or finish-rolled deformed steel bar, and a steel strand is also adopted. Because the use standard of the prior anti-floating anchor rod is low, the corresponding defects are gradually exposed, such as: the shear fracture, dislocation, cracking, leakage and other safety accidents of the bearing beam of the building foundation caused by low anchoring pull-out resistance, poor anti-interference stability, weak anti-corrosion and anti-permeability performance and the like. Based on the technical requirements, the China departs from JGJ476-2019 'construction engineering anti-floating technical standard', wherein the design of the anchor rod provides corresponding requirements, and the technical requirements are made on the anti-pulling anchoring force, the length, the corrosion resistance and the impermeability of the anchoring anti-pulling force of different types of anti-floating anchor rods in different stratums.

Based on the huge demand of anti-floating anchor rod in the market, simultaneously belongs to the prestressing force technical category again, its main research and development content and key technology direction are as follows:

1. the anchoring withdrawal resistance and the anti-interference stability of the prestressed anchor rod anchoring body are improved: the anchor rod is characterized in that the most common and stable anchoring mode in the prestressed anchoring technology is adopted in the main structure design of the anchor rod, namely an extrusion sleeve is matched with an extrusion spring to be in a high-pressure extrusion occlusion mode, a rod body base material adopts UPS-15.2-1860-JG/T161-2016 unbonded steel stranded wires, and the anchoring performance of anchoring in an extrusion mode under the condition of not considering the concrete strength of a pile body meets the requirement of being more than or equal to 95% in GB/T14370-2015 and is far more than 2 times of the strength required by the anchor rod design. The non-adhesive steel strand is adopted, and under a stress structure, the anchoring pulling resistance is large, the anti-interference stability is good, and meanwhile, the anti-corrosion problem of the bus is solved.

2. The problem of underground foundation water leakage through the anchor rod structure body or the crack of the joint of the concrete and the structure body is solved: in the 7.5.10 clause in the JGJ476-2019 standard, different requirements are made on the waterproof grades of the connecting parts of the anchor rods and the underground basic structural bodies, and three parts for forming leakage in the anchor rod structure are provided:

1) The fixed end is the most important leakage point, and because the outer protective layer (plastic sheath) of the steel strand needs to be removed at the extrusion meshing part of the extrusion sleeve and the steel strand, the exposed leakage point is formed at the end part, and underground water can seep from the end part steel strand twisted joint and the outer surface of the steel strand.

2) The second leak source is the junction of stock upper portion and building foundation position raft board or bottom plate, promptly "stagnant water steel sheet position" among the structural pattern, the leak source of here mainly produces in unbonded steel strand wires and pile body concrete junction, and the mode of seepage is: underground foundation water upwells along the crack between the unbonded steel strand plastic sheath and the concrete through corresponding water pressure.

3) The third seepage position is on the top of the anchor rod: the anchor backing plate is similar with the anchor position of ground tackle steel strand wires, and the top layer sheath need be got rid of because of the anchor needs equally to the outer plastic layer of unbonded steel strand wires similar, the anchor junction, consequently the leak source appears in this connecting portion.

In order to meet the requirement of the 7.5.9 in the JGJ476-2019 standard on the anticorrosion design of the anchor rod, a design scheme of comprehensively considering leakage and corrosion resistance compatibility becomes a technical key when the initial design plan of the anchor rod is planned.

After the design structure shown in fig. 1 is adopted for construction, a large number of anti-floating anchor rod piles are found to have underground foundation water seeping upwards along the steel strand after the bottom plate is concreted, and the reasons are as follows:

1. the anti-floating anchor rod is characterized in that a main parent material (an unbonded steel strand) of the anti-floating anchor rod is a surface PE protective pipe which is damaged in the construction process, underground foundation water can penetrate into a damaged opening of the unbonded steel strand through a pile foundation concrete crack and then seep upwards from a gap generated by twisting the steel strand;

2. the parent metal (the unbonded steel strand) is smooth in the outer surface of the surface PE protective pipe, and poor in the adhesion degree with concrete, so that gaps are caused, and underground foundation water can permeate upwards along the gaps.

As shown in fig. 1, an anchor rod structure in the prior art mainly includes a sealing cover 1, a tension anchor 2, an anchor backing plate 3, a support steel bar 31, a water-swellable rubber 4, a spiral bar 5, a water stop steel plate 6, an elbow steel bar 61, a pressure sleeve 7, and the like. The design structure anchor backing plate (steel plate) of figure 1 the junction of mounted position and surface course lower plate upper surface, and the height of ground tackle 50mm plus remaining 20mm after work clamping piece and steel strand stretching locking add up the height 70mm, surface course concrete placement overall height is 100mm, consequently leaves to the infiltration problem on the groundwater of stock upper portion stagnant water thickness only 30mm can't solve. And the lack of sealing connection between anchor backing plate 3 and stagnant water steel sheet 6 to and anchor backing plate 3 and stagnant water steel sheet 6 department only rely on supporting reinforcement 31 and elbow reinforcing bar 61 to strengthen the combination with the concrete, and its combination degree still does not satisfy the requirement very much.

The surface course is the direct surface course that uses of stratum underground promptly, in case the infiltration can directly influence the use of stratum underground, 30 mm's infiltration thickness brings considerable degree of difficulty for the stagnant water construction in later stage simultaneously.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel anticorrosive impervious stock structure for building, it can solve anti-floating anchor pile underground foundation water well and ooze the problem on following steel strand wires.

In order to achieve the purpose, the utility model provides a novel anti-corrosion and anti-permeability anchor rod structure for buildings, which comprises a plurality of steel strands, a tensioning end anchorage assembly, a connecting pipe, a water stop steel ring assembly and a preposed anchoring bearing body assembly; the steel strands are arranged in the anchor rod hole, and the top of the anchor rod hole comprises a cushion layer, a bottom plate and a surface layer from bottom to top; the tensioning end anchorage device assembly is arranged at the top ends of the steel strands and is positioned in the bottom plate below the surface layer, the tensioning end anchorage device assembly comprises a settlement type winged anchor backing plate which is arranged at the top of the steel strands and is positioned at the top surface of the bottom plate, and the settlement type winged anchor backing plate is of a cylindrical structure which comprises a cylinder head part, a cylinder body part and a cylinder tail part from top to bottom, wherein a tensioning anchorage device of the tensioning end anchorage device assembly is arranged at the cylinder head part; the connecting pipe is sleeved outside the steel strands, and the upper end of the connecting pipe is hermetically connected with the lower end of the tail part of the cylinder; the water-stopping steel ring component is embedded in the bottom plate and the cushion layer at the same time, and the lower end of the connecting pipe extends into the water-stopping steel ring component; the front anchoring supporting body component is arranged on the other ends of the steel strands.

In a preferred embodiment, the sinker-winged anchor pad further comprises an inner hole portion and a plurality of reinforcing wing plates; the inner hole part is coaxially arranged on the sedimentation type winged anchor backing plate, the inner hole part is of a step hole structure corresponding to the barrel head part, the barrel body part and the barrel tail part, the inner size of the step hole structure and the outer sizes of the barrel head part, the barrel body part and the barrel tail part are gradually reduced from top to bottom, and the outer part of the barrel body part and the inner hole part corresponding to the barrel body part are provided with conicity; the plurality of reinforcing wing plates are uniformly distributed on the outer wall of the cylinder tail part along the axis, the external dimension of each reinforcing wing plate is larger than that of the cylinder tail part, and the thickness of each reinforcing wing plate is gradually thinned from the root part of the upper surface to the outer edge part.

In a preferred embodiment, the sinker-type winged anchor pad further comprises a plurality of base plate reinforcing ribs and a plurality of wing plate reinforcing ribs; the bottom plate reinforcing ribs extend along the axial direction and are uniformly distributed on the outer wall of the cylinder body part in an annular mode; a plurality of pterygoid lamina strengthening ribs extend and evenly distributed encircles on the outer wall of section of thick bamboo afterbody along axial direction, and is located between two enhancement pterygoid laminas.

In a preferred embodiment, the number of floor stiffeners is the same as the number of wing stiffeners, and each floor stiffener is angled away from its adjacent one of the wing stiffeners.

In a preferred embodiment, the tensioning end anchor assembly further comprises a tensioning anchor, the tops of the plurality of steel strands are fixedly locked on the tensioning anchor through a plurality of working clamping pieces, the tensioning anchor is in a disc-shaped structure and comprises a plurality of conical through holes which are uniformly distributed and annularly arranged around the center of the tensioning anchor, and the tensioning anchor is arranged in a part, corresponding to the barrel body part, of the inner hole part with the small ends of the plurality of conical through holes facing the tail part of the barrel;

wherein the work clamping piece is a pair of semicircle taper sleeve structure, and work clamping piece inside is provided with annular thread tooth, and the outside has with toper through-hole assorted tapering, and the outer protective layer department is got rid of on many steel strands tops to a pair of semicircle taper sleeve structure lock of work clamping piece, and the work clamping piece inlays to be established in the toper through-hole simultaneously, sets firmly the connection together through the tension back of steel strand wires self with the upper end of many steel strand wires, subside formula area wing anchor backing plate, stretch-draw ground tackle and work clamping piece.

In a preferred embodiment, the tension end anchor assembly further comprises a waterproof grout material, an epoxy resin waterproof material, a foam sealant and a common spiral rib; waterproof grouting materials are filled in gaps between the inner wall of the inner hole part and the outer wall of the tensioning anchor, among a plurality of steel strands in the inner hole part and the connecting pipe, and between the outer wall of the connecting pipe and the inner wall of the water-stopping steel ring assembly; the epoxy resin waterproof material seals the uppermost opening of the inner hole part; the foam sealant is filled between the outer wall of the upper end of the connecting pipe and the inner wall of the lower end of the inner hole part; the common spiral rib is wound on the tail part of the cylinder and the outer wall of the connecting pipe; wherein the outer PE protective pipe of the plurality of steel strands positioned in the working clamp, in the inner hole part and at the upper part in the connecting pipe is stripped.

In a preferred embodiment, the water stop steel ring assembly comprises a barrel part and an annular body; the lower part of the connecting pipe extends to the inside of the cylinder part, and waterproof grouting material is filled between the inner wall of the cylinder part and the outer wall of the connecting pipe; the annular body is fixedly sleeved and connected with the upper part of the outer wall of the barrel body part; wherein the annular body is embedded between the bottom plate and the cushion layer.

In a preferred embodiment, the novel corrosion-resistant and impervious anchor rod structure for buildings further comprises a water stop ring end pressing pipe, a plurality of central restraining rings and a plurality of isolating brackets; the end pressing pipe of the water stop ring is extruded and installed on the outer PE protective pipe of each steel strand which is positioned in the water stop steel ring component and is exposed out of the water stop steel ring component within a certain distance; the central restraint rings and the isolation supports are arranged on the steel stranded wires between the water stop steel ring assembly and the front anchoring supporting body assembly at intervals.

In a preferred embodiment, the pre-anchor carrier assembly includes a guide frame restraining ring, a guide bracket, a center grout tube, a fixed end anchor seal housing, a protective media, a fixed end anchor, a pressure tube/compression spring, a bearing plate, a nut, a locking nut/holding plate, a sealing gasket, an O-ring, a taper seal, and a locking nut/gasket.

In a preferred embodiment, the pre-anchor carrier assembly further comprises a straight ribbed helical rib wrapped around a plurality of steel strands exposed from the upper portion of the carrier plate.

Compared with the prior art, the utility model discloses a novel anticorrosive impervious stock structure for building has following beneficial effect: the settling type winged anchor backing plate of the utility model is made of HT250 gray iron or 45# steel, which is characterized in that the bearing capacity and the anti-interference capacity of the bearing plate under the support of concrete meet the requirements under the relative action force of the steel strand; the number of the wing rings is increased or decreased according to the size of the bearing capacity of the anchor backing plate under the calculation of meeting the bearing capacity and the anti-interference capacity of concrete support; because the lower anchor backing plate of the anchorage device at the rear stretching end of the sedimentation type is connected with the metal corrugated pipe to form a relatively independent cavity, the waterproof sealing closed loop at the stretching end is completed by grouting material filling and epoxy resin waterproof materials after the stretching locking is completed; the metal corrugated pipe/metal seamless is connected with the lower opening of the sedimentation type anchor backing plate with wings, so that a cavity is formed inside the pipe and the sedimentation type anchor backing plate from the cushion layer to prevent the concrete pouring of the bottom plate from permeating, and C40 waterproof grouting material is injected into the cavity after the anchor cable is tensioned and locked to form sealing water locking; the extrusion installation position of the pressure pipe comprises an outer PE layer of the steel strand when the pressure pipe is pressed on a cushion layer and the lower section of the cushion layer, the steel strand on the upper section of the cushion layer needs to be degreased to remove the PE layer for pressing, and the main function is that the adhesive force of the metal pressure pipe and concrete is larger than that of PE plastic, so that the problem that base water is penetrated around from an adhesive crack between the PE pipe and the concrete can be effectively solved; secondly, the steel strand has a bending phenomenon at the upper end of the cushion layer in the construction process, and the straightening difficulty of the steel strand after bending is very high, so that the binding of steel bars in the bottom plate pouring process in the later period, the operation and installation difficulty of an anchor backing plate and particularly the installation and construction of an anchor during tensioning are caused; at present, the steel strand bent after the outer pressure pipe is arranged on the steel strand can be easily straightened. The sedimentation type anchor backing plate is cast by gray iron, the surface of the sedimentation type anchor backing plate is rough, and the sedimentation type anchor backing plate can be bonded with concrete to solve the problem of seepage of foundation water through the surface of the anchor backing plate. The anchor body at the tensioning end is integrally descended in the bottom plate layer by the settlement type structure to keep the thickness of the surface layer, so that the problem that the water seepage is difficult to control by only 2-3cm space concrete when the upper end surface of the anchor body and the upper plane of the surface layer are less than or equal to 3cm in the prior art is solved. The concrete of the surface layer has enough thickness and integrity, and the seepage-proofing capability is ensured. The thickness of the surface layer of the anchor pile area is ensured by adopting a sedimentation type structural form, and the seepage-proofing capability is stronger; a sedimentation structure form is adopted, so that the tension end anchor body enables the corrosion resistance and the impermeability of the upper end part of the anchor rod to form a complete closed loop under the functions of relatively independent holes, grouting materials, sealing rings and sealing covers; the structural form and the material of the settling anchor backing plate better solve the problem of circular infiltration.

Drawings

Fig. 1 is a schematic structural view of an anti-corrosion and anti-permeability bolt structure according to an embodiment of the prior art;

fig. 2 is a schematic structural view of an anti-corrosion and anti-permeability anchor structure according to an embodiment of the present invention;

FIG. 3 is a schematic view of the installation structure of the tension end anchor assembly and the water stop steel ring assembly according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at I;

fig. 5 is a schematic cross-sectional front view of a settlement type winged anchor pad according to an embodiment of the present invention;

fig. 6 is a left side view schematic view of a sinker-type winged anchor pad according to an embodiment of the present invention;

fig. 7 is a schematic right-view structural view of a sinker-type winged anchor pad according to an embodiment of the present invention;

fig. 8 is a schematic front view of a tension anchor according to an embodiment of the present invention;

FIG. 9 is a side cross-sectional structural view of a tension anchor according to an embodiment of the present invention;

fig. 10 is a front view assembly diagram of a working clip according to an embodiment of the present invention;

fig. 11 is a side view schematic of a work jaw according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional view of a connection pipe according to an embodiment of the present invention;

fig. 13 is a front view structural schematic diagram of a water stop steel ring assembly according to an embodiment of the present invention;

fig. 14 is a side view cross-sectional structural schematic view of a water stop steel ring assembly according to an embodiment of the present invention;

fig. 15 is a front view of an isolation bracket according to an embodiment of the present invention;

fig. 16 is a side view schematic of an isolation bracket according to an embodiment of the present invention;

FIG. 17 is a schematic structural view of a forward anchoring carrier assembly according to an embodiment of the present invention;

FIG. 18 is an enlarged partial schematic view at II of FIG. 17;

FIG. 19 is a schematic front view of a carrier plate according to an embodiment of the present invention;

FIG. 20 is a side cross-sectional structural schematic view of a carrier plate according to an embodiment of the present invention;

fig. 21 is a schematic cross-sectional view of a conical seal ring according to an embodiment of the present invention;

FIG. 22 is a front cross-sectional view of a fixed end anchor seal cap according to an embodiment of the present invention;

FIG. 23 is a side view schematic illustration of a fixed end anchor seal housing according to an embodiment of the present invention;

fig. 24 is a front view schematically illustrating a structure of a stationary platen according to an embodiment of the present invention;

fig. 25 is a side cross-sectional schematic view of a stationary platen according to an embodiment of the present invention;

fig. 26 is a schematic cross-sectional view of an extrusion sleeve according to an embodiment of the present invention;

fig. 27 is a front view schematically illustrating a guide bracket according to an embodiment of the present invention;

fig. 28 is a side view schematic of a guide bracket according to an embodiment of the present invention.

Description of the main reference numerals:

1-guide frame restraining ring, 2-guide support, 3-center grouting pipe, 4-fixed end anchorage sealing cover, 401-restraining hole, 5-protective medium, 6-fixed end anchorage (extrusion sleeve/spring), 7-pressing pipe/extrusion spring, 8-bearing plate, 801-center taper hole, 802-side taper hole, 803-bolt through hole, 9-nut, 10-unbonded/slowly-bonded steel strand, 11-locking nut/fixing pressure plate, 1101-grouting pipe hole, 1102-threading hole, 12-sealing gasket, 13-O-ring, 14-taper sealing ring, 15-locking nut/gasket, 16-straight rib spiral rib, 17-center restraining ring, 18-isolation support, 19-water stop steel ring assembly, 1901-barrel body, 1902-anchorage body, 20-water stop ring end pressing pipe, 21-connecting pipe (metal corrugated pipe/metal seamless pipe), 22-settlement type winged anchor plate, 2201-barrel head, 2202-barrel body, 2203-barrel tail, 2203-barrel body, 2204-internal hole, 5-water stop ring end pressing pipe, 21-connecting pipe (metal corrugated pipe/metal seamless pipe), 21-joint pipe), 22-settlement type winged anchor plate, 2201-barrel head, 2203-barrel tail part, 2203-ring-reinforcing bar, 2201-reinforcing bar, 2203-ring plate, 2203-reinforcing bar, 2201-C-ring-sealing mark, 2208-epoxy resin, 2201-bar mark, 22025, 2201-epoxy resin mark, 2208-epoxy resin mark, and C-bar mark, 22025.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited by the following detailed description.

Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations such as "comprises" or "comprising", etc., will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

As shown in fig. 2 to 7 and 17, the novel corrosion-resistant and anti-permeability anchor rod structure for buildings according to the preferred embodiment of the present invention mainly includes a plurality of steel strands 10, a tension end anchor assembly, a connecting pipe 21, a water-stop steel ring assembly 19, a front anchor bearing body assembly, etc. The steel strands 10 are arranged in the anchor rod hole, and the top of the anchor rod hole comprises a cushion layer, a bottom plate and a surface layer from bottom to top. The tensioning end anchorage assembly is arranged on the top ends of the steel strands 10 and located in the bottom plate below the surface layer, and comprises a settlement type winged anchor backing plate 22 arranged on the tops of the steel strands 10 and located on the top surface of the bottom plate. The subsidence type anchor backing plate 22 with wings has a cylindrical structure, and the cylindrical structure comprises a cylinder head part 2201, a cylinder body part 2202 and a cylinder tail part 2203 from top to bottom. Wherein the barrel head part 2201 is embedded in the surface layer, and the barrel body part 2202 and the barrel tail part 2203 are embedded in the bottom plate. The connecting pipe 21 is sleeved outside the plurality of steel strands 10, and the upper end of the connecting pipe 21 is hermetically connected with the lower end of the cylinder tail 2203. The water-stopping steel ring assembly 19 is embedded in the bottom plate and the cushion layer at the same time, and the lower end of the connecting pipe 21 extends to the inside of the water-stopping steel ring assembly 19. The front anchoring carrier assembly is arranged at the other end of the plurality of steel strands 10 and is located at the bottom of the anchor rod hole.

Referring to fig. 5-7, in some embodiments, the sinker winged anchor plate 22 further includes an inner bore portion 2204 and a plurality of reinforcing wings 2205. The inner hole portion 2204 is coaxially arranged on the central axis of the subsidence type winged anchor plate 22, the inner hole portion 2204 is in a step hole structure corresponding to the cylinder head portion 2201, the cylinder body portion 2202 and the cylinder tail portion 2203, the size of the step hole structure and the external sizes of the cylinder head portion 2201, the cylinder body portion 2202 and the cylinder tail portion 2203 are gradually reduced from top to bottom, and the external portion of the cylinder body portion 2202 and the inner hole portion 2204 corresponding to the external portion have conicity which is about 2 degrees. A plurality of reinforcing wings 2205 are uniformly distributed on the outer wall of the cylinder tail 2203 along the axis, the outer dimension of the reinforcing wings 2205 is larger than that of the cylinder tail 2203, and the thickness of each reinforcing wing 2205 becomes thinner from the root of the upper surface to the outer edge.

Referring to fig. 5-7, in some embodiments, the sinker-type anchor plate 22 further comprises a plurality of base plate stiffeners 2206 and a plurality of wing stiffeners 2207. A plurality of bottom plate ribs 2206 extend in the axial direction and are arranged around the outer wall of the barrel body 2202 in an evenly distributed manner. The wing plate reinforcing ribs 2207 extend in the axial direction and are uniformly distributed around the outer wall of the cylinder tail 2203 and are located between the two reinforcing wing plates 2205. The wing plate reinforcing ribs 2207 can be arranged according to actual needs and stress conditions, and can be omitted if the stress is small.

Referring to fig. 6, in some embodiments, the plurality of base plate stiffeners 2206 is the same as the plurality of wing stiffeners 2207, and each base plate stiffener 2206 is angled away from its adjacent wing stiffener 2207. The number of the base plate reinforcing ribs 2206 and the wing plate reinforcing ribs 2207 of the present embodiment is four each, and each deflection angle is 45 °, but the number and the deflection angle are not limited thereto.

Referring to fig. 7, in some embodiments, the sinker winged anchor pad 22 further includes a first marker 2208, a second marker 2209, and a third marker 2210, which may be disposed on the inner bore portion corresponding to the bottom edge of the barrel head 2201, with the markers all disposed in a centered annular arrangement. The mark can also be arranged on the bottom surface of the joint of the barrel head part and the barrel body part. The mark can be processed by direct casting, laser marking and the like.

In some embodiments, the cylindrical structure of the subsidence type winged anchor backing plate 22 of the present embodiment is illustrated as a cylindrical structure, but the present invention is not limited thereto, and it may also be an elliptical cylinder, a polygonal cylinder, etc.

As shown in fig. 8 to 11 with reference to fig. 4, in some embodiments, the tension end anchor assembly further includes a tension anchor 23, the top of the plurality of steel strands 10 is locked on the tension anchor 23 by a plurality of working clips 24, the tension anchor 23 has a disc structure, the tension anchor 23 includes a plurality of tapered through holes 2301, the tapered through holes 2301 are uniformly distributed and annularly disposed around the center of the tension anchor 23, and the tension anchor 23 is disposed in a portion of the inner bore portion 2204 corresponding to the barrel portion 2202 toward the barrel tail portion 2203 with the small ends of the plurality of tapered through holes 2301.

Wherein work clamping piece 24 is a pair of half cone cover structure, work clamping piece 24 is inside to be provided with annular thread tooth 2401, the outside has with toper through-hole 2301 assorted tapering, outer protective layer department is got rid of on many steel strands 10 tops to a pair of half cone cover structure lock of work clamping piece 24, work clamping piece 24 inlays simultaneously and establishes in toper through-hole 2301, the upper end with many steel strands 10 through the tension back of steel strands 10 self, subside formula area wing anchor backing plate 22, stretch-draw ground tackle 23 and work clamping piece 24 set firmly to link together.

Referring to fig. 2-4, in some embodiments, the tension end anchor assembly further includes a waterproof grout material 25, an epoxy waterproof material 26, a foam sealant 27, and a conventional spiral rib 28. The waterproof grouting material 25 is filled in a gap between the inner wall of the inner hole portion 2204 and the outer wall of the tension anchor 23, among the plurality of steel strands 10 in the inner hole portion 2204 and in the connecting pipe 21, and between the outer wall of the connecting pipe 21 and the inner wall of the waterproof steel ring assembly 19, and the waterproof grouting material 25 is made of a C40 material. The epoxy resin waterproof material 26 seals the uppermost opening of the inner hole portion 2204, and seals and tightens the opening of the inner hole portion 2204. The foam sealant 27 is filled between the outer wall of the upper end of the connection pipe 21 and the inner wall of the lower end of the inner hole portion 2204 to achieve a sealing connection therebetween. A generally helical rib 28 is wound around the barrel tail 2203 and the outer wall of the connector tube 21. Wherein the outer PE sheaths of the strands 10 within the working jaws 24 and within the inner bore 2204 and within the upper portion of the connecting tube 21 are stripped to provide adequate bonding of the strands 10 to the C40 waterproof grout 25. The technical scheme of this application can be suitable for unbonded or slowly bonding steel strand 10.

As shown in fig. 13-14, in some embodiments, water stop steel ring assembly 19 includes a cylindrical body 1901 and an annular body 1902. The lower portion of the connection pipe 21 extends to the inside of the cylindrical body 1901, and a waterproof grout 25 is filled between the inner wall of the cylindrical body 1901 and the outer wall of the connection pipe 21. The ring body 1902 is fixedly sleeved on the upper portion of the outer wall of the barrel portion 1901, and the barrel portion 1901 and the ring body 1902 are connected in a sealing manner, including, for example, but not limited to, welding. Wherein the ring 1902 is embedded between the base plate and the cushion layer. The shape of the water stop steel ring assembly 19 comprises various forms such as a cylinder and a polygonal cylinder.

As shown in fig. 15 to 16 and referring to fig. 3, in some embodiments, the novel corrosion-resistant and impervious anchor rod structure for construction further includes a water stop ring end pressing pipe 20, a plurality of central restraining rings 17 and a plurality of isolation brackets 18. The water stop ring end pressing pipe 20 is arranged on an outer PE protective pipe of each steel strand 10 which is positioned in the water stop steel ring assembly 19 and exposed out of the water stop steel ring assembly 19 for a certain distance. The extrusion installation position of stagnant water ring end pressing pipe 20 contains steel strand wires 10 outer PE pillar when for the bed course and lower section suppression, and the upper segment steel strand wires 10 need degrease and get rid of outer PE pillar above the bed course. The main function of the PE plastic pipe is that the adhesive force between the metal pressure pipe and the concrete is larger than that of the PE plastic, and the problem that the basic water is penetrated around from a bonding crack between the PE pipe and the concrete can be effectively solved; secondly, the steel strand 10 is bent at the upper end of the cushion layer in the construction process, the straightening difficulty of the bent steel strand 10 is high, and the difficulty of reinforcement binding and anchor backing plate operation installation in the bottom plate pouring process in the later period, particularly the installation and construction of the anchorage device in the stretching process is caused. Now, the steel strand 10 bent after the steel strand 10 has an external pressure pipe can be easily straightened. A plurality of central restraining rings 17 and a plurality of isolation brackets 18 are arranged on the plurality of steel strands 10 at intervals between the water stop steel ring assembly 19 and the front anchoring carrier assembly.

In some embodiments, the use of the central restraining ring 17 of the steel strand 10 in combination with the spacer bracket 18 increases the frictional resistance of the steel strand 10 and improves the mechanical properties of the concrete structure. The steel strand 10 isolation support 18 ensures the uniform installation of the steel strand 10, ensures the uniform stress of the stress body, and forms friction resistance and mechanical property by combining with the central restraint ring 17 of the steel strand 10.

As shown in fig. 17-28, in some embodiments, the pre-anchor carrier assembly comprises a guide frame restraining ring 1, a guide bracket 2, a center grout tube 3, a fixed end anchor seal cap 4, a protective media 5, a fixed end anchor 6, a pressure tube/compression spring 7, a bearing plate 8, a nut 9, a locking nut/stationary platen 11, a gasket 12, an O-ring 13, a tapered sealing ring 14, a locking nut/gasket 15, and straight ribbed spiral ribs 16. The spiral ribs 16 with straight ribs are wound on the plurality of steel strands 10 exposed out of the upper part of the bearing plate 8. Wherein, the guide frame restraining ring 1 and the guide bracket 2 are fixed to increase the guidance. The guide bracket 2 plays a role in guiding and centering, so that the pulling resistance is increased, and the insufficient strength of the grouting body at the end of the bearing body caused by bottom hole sediment is avoided. The central grouting pipe 3 is used for high-pressure grouting. The sealing cover 4 of the fixed end anchorage device 6 is arranged in the protective device, and the sealing protection among the anchoring structure body of the fixed end anchorage device 6, the steel strand 10/pressure sleeve and the bearing body is realized. The protective medium 5 is used for protecting the built-in anchorage device structure assembly from rust and leakage. The fixed end anchorage 6 comprises a compression sleeve/spring (not shown) which is fitted over each steel strand 10. The steel strand 10 is connected with an anchor (an extrusion sleeve/a spring) in an occlusion way, and the occlusion pulling resistance of the steel strand meets the requirements of GB/T14370-2015. The pressure pipe/extrusion spring 7 and the steel strand 10 are connected with the bolt in an occlusion way, and the occlusion pulling resistance is more than or equal to 70KN, so that the requirement of additional anchoring of the bracket is met, and the convenience of processing and installation is met. The bearing plate 8 meets the requirements of bearing and anti-interference capabilities of the bearing plate 8 supported by grouting bodies under the relative acting force of the steel strands 10 by the anchorage device. The nut 9 and the bracket are fixedly connected with the bearing plate 8. The unbonded/slowly bonded steel strand 10 is a carrier connecting the lower fixed end of the anchor and the upper structure end of the anchor, and is a bearing body of bidirectional acting force. The locking nut/fixed pressing plate 11 plays a role in fastening and sealing the connecting piece. The sealing gasket 12 is a sealing protection of the central grouting pipe 3 and the protective cover, and prevents base water from permeating from the connecting part. The O-shaped ring 13 is used for sealing and protecting the connecting part between the protective sealing cover and the bearing plate 8 and preventing the base water from permeating from the connecting part of the sealing cover. The conical sealing ring 14 is an effective sealing element for a transition gap between the bearing plate 8 and a stressed base metal (unbonded/slowly bonded steel strand 10), and the central grouting pipe 3 is connected with each part of the bearing plate 8, so that the water tightness in the protective sealing cover is ensured, and the purposes of rust prevention and seepage prevention are achieved. The locking nut/gasket 15 is used for fastening and sealing the connecting piece bearing plate 8, the sealing cover and the fixed pressing plate through the central grouting pipe 3.

To sum up, the utility model discloses a novel anticorrosive impervious stock structure for building has following advantage: the settling type winged anchor backing plate of the utility model is made of HT250 gray iron or 45# steel, which is characterized in that the bearing capacity and the anti-interference capacity of the bearing plate under the support of concrete meet the requirements under the relative action force of the steel strand; the number of the wing rings is increased or decreased according to the size of the bearing capacity of the anchor backing plate under the calculation of meeting the bearing capacity and the anti-interference capacity of concrete support; because the lower anchor backing plate of the anchorage device at the rear stretching end of the sedimentation type is connected with the metal corrugated pipe to form a relatively independent cavity, the waterproof sealing closed loop at the stretching end is completed by grouting material filling and epoxy resin waterproof materials after the stretching locking is completed; the metal corrugated pipe/metal seamless is connected with the lower opening of the sedimentation type anchor backing plate with wings, so that a cavity is formed inside the pipe and the sedimentation type anchor backing plate from the cushion layer to prevent the concrete pouring of the bottom plate from permeating, and C40 waterproof grouting material is injected into the cavity after the anchor cable is tensioned and locked to form sealing water locking; the extrusion installation position of the pressure pipe comprises an outer PE layer of the steel strand when the pressure pipe is pressed on a cushion layer and the lower section of the cushion layer, the steel strand on the upper section of the cushion layer needs to be degreased to remove the PE layer for pressing, and the main function is that the adhesive force of the metal pressure pipe and concrete is larger than that of PE plastic, so that the problem that base water is penetrated around from an adhesive crack between the PE pipe and the concrete can be effectively solved; secondly, the steel strand has a bending phenomenon at the upper end of the cushion layer in the construction process, and the straightening difficulty of the steel strand after bending is very high, so that the binding of the steel bars in the bottom plate pouring procedure and the operation and installation difficulty of the anchor backing plate in the later period, particularly the installation and construction of the anchorage device in the tensioning process are caused; at present, the steel strand bent after the outer pressure pipe is arranged on the steel strand can be easily straightened. The sedimentation type anchor backing plate is cast by gray iron, the surface of the sedimentation type anchor backing plate is rough, and the sedimentation type anchor backing plate can be bonded with concrete to solve the problem of seepage of foundation water through the surface of the anchor backing plate. The anchor body at the tensioning end is integrally descended in the bottom plate layer by the settlement type structure to keep the thickness of the surface layer, so that the problem that the water seepage is difficult to control by only 2-3cm space concrete when the upper end surface of the anchor body and the upper plane of the surface layer are less than or equal to 3cm in the prior art is solved. The concrete of the surface layer has enough thickness and integrity, and the seepage-proofing capability is ensured. The thickness of the surface layer of the anchoring pile area is ensured by adopting a sedimentation type structure form, and the seepage-proofing capability is stronger; a sedimentation structure form is adopted, so that the tension end anchor body enables the corrosion resistance and the impermeability of the upper end part of the anchor rod to form a complete closed loop under the function action of relatively independent holes and grouting materials, sealing rings and sealing covers; the structural form and the material of the settling anchor backing plate better solve the problem of circular infiltration.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (10)

1. The utility model provides a novel anticorrosive impervious stock structure for building which characterized in that includes:

the steel strands are arranged in the anchor rod hole, and the top of the anchor rod hole comprises a cushion layer, a bottom plate and a surface layer from bottom to top;

the tensioning end anchorage device assembly is arranged at the top ends of the steel strands and is positioned in the bottom plate below the surface layer, the tensioning end anchorage device assembly comprises a sedimentation type winged anchor backing plate which is arranged at the top of the steel strands and is positioned at the top surface of the bottom plate, the sedimentation type winged anchor backing plate is of a cylindrical structure, and the cylindrical structure comprises a cylinder head part, a cylinder body part and a cylinder tail part from top to bottom;

wherein the tensioning anchors of the tensioning end anchor assembly are disposed at the barrel head portion;

the connecting pipe is sleeved outside the steel strands, and the upper end of the connecting pipe is hermetically connected with the lower end of the tail part of the cylinder;

the water-stopping steel ring assembly is embedded in the bottom plate and the cushion layer at the same time, and the lower end of the connecting pipe extends into the water-stopping steel ring assembly; and

a front anchoring carrier assembly disposed at the other end of the plurality of steel strands.

2. The new corrosion and permeability resistant anchor rod structure for building as claimed in claim 1, wherein the sinker type winged anchor backing plate further comprises:

the inner hole part is coaxially arranged on the sedimentation type winged anchor backing plate, the inner hole part is of a step hole structure corresponding to the cylinder head part, the cylinder body part and the cylinder tail part, the inner size of the step hole structure and the outer sizes of the cylinder head part, the cylinder body part and the cylinder tail part are all gradually reduced from top to bottom, and the outer part of the cylinder body part and the inner hole part corresponding to the cylinder body part are all provided with conicity; and

and the plurality of reinforcing wing plates are uniformly distributed on the outer wall of the cylinder tail part along the axis, the external dimension of each reinforcing wing plate is larger than that of the cylinder tail part, and the thickness of each reinforcing wing plate becomes thinner gradually from the root part of the upper surface to the outer edge part.

3. The new corrosion and seepage resistant anchor rod structure for building as claimed in claim 2, wherein the sinker type winged anchor backing plate further comprises:

the bottom plate reinforcing ribs extend along the axial direction and are uniformly distributed and annularly arranged on the outer wall of the barrel body part; and

and the wing plate reinforcing ribs extend along the axial direction and are uniformly distributed and annularly arranged on the outer wall of the tail part of the barrel and are positioned between the two reinforcing wing plates.

4. A novel corrosion and seepage resistant anchor rod structure for construction according to claim 3, wherein the number of the plurality of bottom plate reinforcing ribs and the number of the plurality of the wing plate reinforcing ribs are the same, and each bottom plate reinforcing rib and one adjacent wing plate reinforcing rib are deflected by an angle.

5. The novel corrosion-resistant and permeability-resistant anchor rod structure for buildings according to claim 2, wherein the top of the plurality of steel strands is fixedly locked on the tension anchor by a plurality of working clips, the tension anchor is in a disc-shaped structure and comprises a plurality of tapered through holes which are uniformly distributed and annularly arranged around the center of the tension anchor, and the tension anchor is arranged in the part of the inner hole part corresponding to the barrel part with the small ends of the tapered through holes facing the barrel tail part;

wherein the work clamping piece is a pair of half cone cover structure, the inside annular thread tooth that is provided with of work clamping piece, the outside have with toper through-hole assorted tapering, a pair of half cone cover structure lock of work clamping piece is in outer protective layer department is got rid of on many steel strand wires tops, simultaneously the work clamping piece inlays to be established in the toper through-hole, through the tension back of steel strand wires self will the upper end of many steel strand wires the subside formula area wing anchor backing plate stretch-draw ground tackle reaches the work clamping piece sets firmly to link together.

6. A novel corrosion and permeability resistant anchor rod structure for building use according to claim 5 wherein said tension end anchor assembly further comprises:

waterproof grouting materials are filled in gaps between the inner wall of the inner hole part and the outer wall of the tensioning anchor, among the steel strands in the inner hole part and the connecting pipe, and between the outer wall of the connecting pipe and the inner wall of the water-stopping steel ring assembly;

an epoxy resin waterproof material which closes the uppermost opening of the inner hole portion;

a foam sealant filled between an outer wall of an upper end of the connection pipe and an inner wall of a lower end of the inner hole part; and

a general spiral rib wound around the outer wall of the connection pipe and the cylinder tail;

wherein the outer PE protective pipe of the plurality of steel strands positioned in the working clamping sheet, the inner hole part and the upper part in the connecting pipe is stripped.

7. The novel corrosion and permeability resistant anchor rod structure for building of claim 6, wherein the water stop steel ring assembly comprises:

the lower part of the connecting pipe extends to the inside of the cylindrical body, and the waterproof grouting material is filled between the inner wall of the cylindrical body and the outer wall of the connecting pipe; and

an annular body fixedly sleeved and connected to the upper part of the outer wall of the barrel part;

wherein the annular body is embedded between the bottom plate and the cushion layer.

8. A novel anti-corrosion and anti-permeability anchor rod structure for building as claimed in claim 2, further comprising:

the water stop ring end pressing pipe is arranged on an outer PE protective pipe of each steel strand which is positioned in the water stop steel ring component and exposed out of the water stop steel ring component within a certain distance; and

and the central restraint rings and the isolation supports are arranged on the steel stranded wires between the water stop steel ring assembly and the preposed anchoring supporting body assembly at intervals.

9. The new corrosion and impervious anchor rod structure for building of claim 2 wherein said pre-anchor carrier assembly comprises a guide frame restraining ring, a guide bracket, a center grout tube, a fixed end anchor seal housing, a protective media, a fixed end anchor, a pressure tube/squeeze spring, a bearing plate, a nut, a locking nut/holding plate, a gasket, an O-ring, a taper seal and a locking nut/gasket.

10. A novel corrosion and impervious anchor rod structure for buildings according to claim 9 wherein said pre-anchored bearing body assembly further comprises a straight ribbed spiral rib wrapped around said steel strands exposed from the upper portion of said bearing plate.

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