CN113338279A

CN113338279A - Anticorrosive stagnant water stock

Info

Publication number: CN113338279A
Application number: CN202110500363.1A
Authority: CN
Inventors: 武冬冬; 武海龙
Original assignee: Jiangsu Fulu Construction Co ltd
Current assignee: Jiangsu Fulu Construction Co ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-09-03

Abstract

An anticorrosion water stop anchor rod comprises an anchor rod body and an anchoring structure at the top, wherein the anchor rod body is a main reinforcing steel bar, the main reinforcing steel bar adopts bonded or unbonded finish rolling twisted steel, a steel strand and a prestressed pull rod, the top of the anchor rod body is anchored with a building bottom plate, the bottom of the anchor rod body is anchored with a through section or an enlarged head section of an anchor head concrete solidification material, and the concrete solidification material is combined with the anchor head and the main reinforcing steel bar to form an anchor rod pile system; the anchoring structure at the upper end of the main reinforcing steel bar adopts a three-piece high-strength nut or three-way high-strength nut or high-strength nut flange anchoring structure and is poured with concrete solidification materials; the expanding head section is an expandable end plate, a ground anchor, a pressure bearing plate, a fixed-diameter anchor head or a tree-root-shaped expanding head, a variable-diameter reinforcement cage, a fiber cage or a bag type or combined bag type expanding head; the water-swelling sealing material sealing ring or the sealing gasket is arranged on the main reinforcing steel bar of the anchor rod at the anchoring position of the top and the bottom of the anchor rod piece or the anchoring position of the anchor rod piece bottom and the straight-through section or the enlarged head section; at least one waterproof and anticorrosive layer is sequentially and respectively arranged around the anchor hole at the anchoring position of the bottom plate at the top and the bottom of the anchor rod piece; and 1-2 circles of water-swelling sealing strips are arranged at the positions of the main ribs close to the waterproof protective layer.

Description

Anticorrosive stagnant water stock

Technical Field

The invention relates to an anchor rod, in particular to an anti-corrosion water-stop anchor rod (pile) system with an expansion head (comprising a reducing cage or a bearing plate expansion body), which is mainly used for the technical fields of anti-floating of buildings, foundation pit support, road slope support, reinforcement and the like and is also used for a compression-resistant pile.

Background

The anchor rod is a rod piece system structure for reinforcing rock and soil mass. The defect that the tensile capacity of a rock-soil body is far lower than the compressive capacity is overcome through the longitudinal tension action of the anchor rod body. From the mechanical point of view, the cohesive force and the tensile resistance of the surrounding rock body are mainly improved. The anchor rod is actually positioned in the rock-soil body and forms a new compound body with the rock-soil body. The anchor rod in the complex is the key to solve the problem of low tensile capacity of the surrounding rock mass. Thereby greatly enhancing the tensile capacity of the rock-soil body. The reinforcement cage used in the building engineering industry is an important concrete skeleton, and the fiber cage aims to completely or partially replace the reinforcement cage in the building engineering industry, particularly the concrete skeleton with stronger tensile resistance (more than 2 times of the reinforcement) is needed, and the anchor rod or pile foundation prepared by using the variable-diameter fiber cage is the best choice.

The anchor must have several elements: one end of the rod body can be tightly contacted with the rock-soil body to form friction (or bonding) resistance; the other end of the anchor rod body, which is positioned outside the rock-soil body, can form radial resistance to the rock-soil body; the anchor rod is used as a tension member penetrating into the stratum, one end of the anchor rod is connected with an engineering structure, the other end of the anchor rod penetrates into the stratum, the whole anchor rod is divided into a self-contained section and an anchoring section, the free section is an area for transmitting the tension at the head of the anchor rod to an anchoring body, and the function of the free section is to apply the tension to the anchor rod; the anchoring section is an area where the prestressed tendon and the soil layer are bonded by cement paste or concrete anchoring bodies, and has the functions of increasing the bonding friction effect of the anchoring body and the soil layer, increasing the bearing or tensile effect of the anchoring body and transmitting the tensile force of the free section to the deep part of the soil body.

The anchor rod is the most basic component of the support in the modern underground mining mine, and the surrounding rocks of the roadway are bound together to support the surrounding rocks; the anchor rod is not only used in mines, but also used in the building engineering technology to actively reinforce basements, tunnels, dam bodies and the like.

The basic model of the anchor rod is as follows: steel bars or steel wire ropes (steel cables) mortar concrete anchor rods, but corrosion prevention and water stop (preventing water from soaking into the rod body) are required. The common process of corrosion prevention and water stopping is to treat the surface of a rod body by using epoxy and other coatings, but underground water is still prevented from submerging the rod body, because the service life of the anchor rod is designed to be 50 years +; grouting anchor rods and the like (cement mortar is used as a binder of the anchor rods, surrounding rocks and soil bodies).

The commonly used expanded anchor rod technology in the market at present comprises plain slurry, capsule type expanded anchor rod technology and the like. In the aspect of cost construction, the reaming technology of the variable-diameter large-head anchor rod or the pile foundation is based, the large head and the small head are formed by grouting or concrete injection, but the anchor rod or the pile foundation with enough friction force and tension or resistance transmission cannot be formed without reaching the corresponding steel reinforcement framework, and particularly the anchoring force of the anchor rod is limited. The anchoring force is not enough when the anchor is used in the technical fields of building basement anti-floating foundation pit support, side slope support, reinforcement and the like. Because they require a high pullout resistance and are stable and reliable.

In addition, what is often adopted in the foundation of high-rise building is non-reducing foundation pile, but under the condition that satisfies the same intensity and deformation requirement, reducing foundation pile compares with non-reducing foundation pile, and reducing foundation pile mainly has following characteristics:

1) compared with the non-variable-diameter foundation pile, the variable-diameter foundation pile with the same length has the advantages that the strength can be generally improved by 1.1-1.5 times, and the deformation can be reduced by 0.7-0.9 time.

2) Under the first characteristic condition, the requirement of strength and deformation of the building is met, and the pile length can be obviously shortened.

3) Under the condition of ensuring the strength and the deformation of the pile, the length of the pile can be shortened, the workload is reduced, the construction conditions are improved, and the purposes of saving labor, materials and time are achieved.

CN201710363883 is a structure of an anchor rod system for overcoming the anti-floating fixed diameter or enlarged head, when a drill hole is drilled to a designed depth, high-pressure jet grouting construction or mechanical reaming construction can be carried out, a pull rod of the anchor rod and the fixed diameter anchor head or the enlarged head are put down, after the enlarged head is in place, an enlarging mechanism enlarges the enlarged head to a designed size, and then high-pressure grouting or pouring concrete forms a pile in the enlarged section and the whole free section; the tie rod in the anchor rod adopts a twisted steel bar which can apply prestress; binding the spiral stirrups and the foundation slab steel bars on the substrate, and avoiding collision with prestressed steel bars in the binding process; and finally, the formwork is erected to pour the foundation concrete foundation slab. The technique for prefabricating the prestressed anchor rod member by using the pretensioning method is as follows: the engineering practice shows; the displacement of the pressure-bearing type variable-diameter steel reinforcement cage expansion anchor rod consists of two parts of elastic deformation of a rod body and sliding (plastic deformation) of an expansion body section. Reference may also be made to CN2017213763240, a sack-expanding variable-diameter steel reinforcement cage and anchor, and CN2017211496584, an anchor rod.

The expanded head anchor rod technology is a novel underground engineering application technology, and is more economic and environment-friendly compared with the common traditional process in the aspects of solving the problems of basement anti-floating, foundation pit supporting and the like; meanwhile, the method has great advantages in the aspects of construction period, durability and the like. Along with the popularization of the expanded anchor rod technology, more and more projects adopt the expanded anchor rod technology to carry out basement anti-floating, foundation pit supporting and the like. Meanwhile, a great deal of engineering practice shows that the bearing tension of the anchor rod is far greater than that of a common anchor rod, the deformation displacement of the anchor rod is large, and therefore the displacement control is larger than that of a traditional pile foundation, so how to better control the deformation of the anchor rod is an important direction for improving the expanded anchor rod technology.

In some clay layers, weak layers, pebble layers, gravel layers or weathered rock layers, the strength of the layers is often lower than that of concrete, so that the bearing capacity of the pile body of the concrete foundation pile is not exerted favorably. Therefore, in order to fully exert the strength characteristics of concrete, a paper in the aspect of building engineering already proposes that the bearing capacity of the pile is improved by adopting the variable-diameter foundation pile, and the technology is obviously reasonable and feasible.

The existing expanded head anchor rod is mainly in a steel reinforcement cage structure by taking a plurality of structures parallel to a main fiber rod or a vertical rib of a main steel bar as a main part, and can be used for strength deformation calculation of a variable-diameter foundation pile in the same way as a calculation method of a non-variable-diameter foundation pile.

The steel reinforcement cage structure is the unfavorable tensile strength who absorbs anchor rod owner steel bar pole in the atress with the parallel structure of the vertical muscle of a plurality of and main steel bar pole, and generally speaking, the main steel bar pole of anchor rod transmits the steel reinforcement cage and the concrete that condenses with it, needs to design an expansion head steel reinforcement cage that has better stress strength with low costs, stress structure is more reasonable, the steel reinforcement cage at perpendicular to main fibre pole or main reinforcing bar.

The reinforcement cage is made of steel bars, requires surface corrosion resistance treatment, has large mass and needs to be improved in tensile strength. For example, the fiber cage with higher tensile strength and lighter weight has great significance, and is particularly used in some special occasions. Even in the concrete setting, the anticorrosion requirement on the anchor rod body is far higher than that on the reinforcement cage.

CN202010017575X in a full-assembly pressure-bearing type variable-diameter reinforcement cage enlarged footing anchor rod pile system, including the main (steel) muscle 3 of the enlarged footing reinforcement cage, steel bar connector, stock member; the limiting device 5 is a limiting nut which can be of an open type or a closed type and the like, and a fixer of the shaft in the reinforcement cage of the enlarged footing is arranged on the anchor rod piece (limiting position) by the limiting nut; the axial rod adopts finish rolling spiral steel bars, and the steel bar connector is used for length connection of the end parts of the finish rolling spiral steel bars; the top of the anchor rod piece is anchored with the bottom plate, the bottom of the anchor rod piece is anchored with the expanded head reinforcement cage, namely the variable-diameter reinforcement cage, and the concrete or mortar crystal part is combined with the expanded head reinforcement cage and the axial rod to form the variable-diameter reinforcement cage expanded head anchor rod pile system. The fixing layer at the upper end of the axial rod adopts a high-strength nut three-piece anchoring mode, a three-way high-strength nut or flange anchoring structure or other traditional anchoring modes. High-strength nuts are adopted.

The expanded head reinforcement cage, namely the reducing reinforcement cage, comprises main reinforcements of the reinforcements and reinforcing material for the configured reinforcements, namely, the expanded head reinforcement cage comprises axial rods, namely main reinforcements, a circular ring or a circular plate, a plurality of vertical reinforcements, a plurality of ribs and a ring-shaped fixer, wherein the circular ring or the circular plate is vertical to the axial rods, one ends of the vertical reinforcements are uniformly fixed on the circular ring or the circular plate, the other end or the middle part of each vertical reinforcement is connected with one end of one rib, the vertical reinforcements surround the axial rods, the other ends of the ribs are connected to the ring-shaped fixer, and the ring-shaped fixer is fixed or slides on the axial rods; a releasable spring or other form of variable and constant diameter reinforcement cage is employed. At the top end of the anchor rod piece, the fixing layer at the upper end of the rod piece adopts a high-strength nut three-piece anchoring mode, and a three-way high-strength nut or flange anchoring structure adopts a high-strength nut 13; the top of the anchor rod (pull rod) of the basic structure is fixed by a flange nut embedded in and sleeved on the anchor rod (pull rod), or is fixed by an anchor plate and a nut and is connected with a steel reinforcement framework system of the foundation slab, and finally, the anchor plate is fixed by installing a formwork and pouring the concrete foundation slab.

The peripheries of a plurality of vertical ribs of the expanded head steel reinforcement cage are provided with flexible connected elastic stirrups; the variable-diameter reinforcement cage is released by releasing the elastic stirrups, and the axial rods, namely the main reinforcements of the reinforcements and the reinforcing steel bar distribution materials are wrapped and coagulated by concrete or cement mortar, cement paste or other curable materials. The above reinforcement cage and release structures have been disclosed.

Disclosure of Invention

The invention aims to provide an anticorrosion water-stop anchor rod, which overcomes the effects of anticorrosion and groundwater resistance of the conventional anchor rod (pile), has a two-section solidification structure at least, is firmer with an anticorrosion water-resistant structure of a concrete layer at the top end of the anchor rod and has a more reasonable mechanical structure, overcomes the defects of the conventional (especially prestress-applied) anchor rod anchoring or pile foundation anticorrosion water-resistant structure, is applied to form an expanded anchor rod or pile foundation with a standard steel reinforcement framework, and obtains the anchor rod or pile foundation with better cost performance.

The invention has the technical scheme that the anti-corrosion water-stop anchor rod comprises an anchor rod body and an anchoring structure at the top, wherein the anchor rod body is a main reinforcing steel bar, the main reinforcing steel bar adopts bonded or unbonded finish rolling threaded reinforcing steel bars, steel strands and a prestressed pull rod, the top of the anchor rod body is anchored with a building bottom plate, the bottom of the anchor rod body is anchored with a straight-through section or an enlarged head section of an anchor head concrete solidification material, and the concrete solidification material is combined with the anchor head and the main reinforcing steel bar to form an anchor rod pile system; the anchoring structure at the upper end of the main reinforcing steel bar adopts a high-strength nut three-piece set or a three-way high-strength nut or a high-strength nut flange anchoring structure and is poured with concrete solidification materials; the expanding head section is an expandable end plate, a pressure bearing plate, a fixed-diameter anchor head or a tree root-shaped expanding head, a variable-diameter reinforcement cage, a fiber cage or a bag-type or combined bag-type expanding head; the water-swelling sealing material sealing ring or the sealing gasket is arranged on the main reinforcing steel bar of the anchor rod at the anchoring position of the top and the bottom of the anchor rod piece or the anchoring position of the anchor rod piece bottom and the straight-through section or the enlarged head section;

at least one waterproof and anticorrosive layer is sequentially and respectively arranged around the anchor hole at the anchoring position of the bottom plate at the top and the bottom of the anchor rod piece; and 1-2 circles of water-swelling sealing strips (circles) are arranged at the positions of the main ribs close to the waterproof protective layer.

The anchor rod body has at least two sections of solidification structures in the stratum, the rod body of the lower anchor rod is a fixed section solidified in the ground (rock) layer, the rod body of the upper anchor rod is a free section (a typical structure adopting unbonded main steel bars or fiber bars), and the free section can apply stress; the surface of the anchor bar of the main reinforcing steel bar or the fiber bar without the bonding bar is provided with an anti-corrosive grease layer, and a plastic film sleeve, a corrugated pipe or other sleeves are arranged outside the anti-corrosive grease layer;

the rod body of the lower anchor rod is a solidified material solidified in an anchoring section with an enlarged head ground (rock) layer, the anchor rod and a rock body are bonded together by slurry, the solidified material (slurry body) is pulled when the anchor rod bears the load, and the rod body of the upper anchor rod is a free section to form a prestressed tension type enlarged head end anchor rod;

the anchor rod body is a full-length straight-through full-length bonding rib in the stratum, and concrete setting materials are poured, wherein the concrete setting materials are fiber concrete, super-fluid concrete, cement mortar, fiber cement mortar, cement paste, fiber cement paste or other cementing materials and the like to form a full-length bonding tension type anchor rod; or the anchor rod body is a through long straight-through full-length unbonded rib in the stratum, and an end plate is fixed at the lowest end to form a common pressure type anchor rod; when the rod body of stock is through long full length unbonded rod body and end plate or other anchor head is fixed to be held and is wrapped up in enlarged footing concrete, the stock bears the weight of, acts on the slurry through the supporting body with pressure, and the grout pressurized forms pressure type prestressing force enlarged footing stock.

The anchor rod has central shaft with 1-12 stress applying steel bars or steel strands distributed in the central shaft or symmetrical position, main steel bars or steel strands with upper ends fixed to the base plate, anchor bars in the anchoring section and one end plate in the lowest end and staggered step by step in different heights, anchor rod body without adhesive steel bars or steel strands, and bearing body in the end of the anchor rod.

The bearing bodies at the lowest ends of the steel bars or the steel strand wires are used for respectively fixing one end plate at different elevations;

the anticorrosive waterproof construction of ground tackle and bearing plate junction: pouring micro-expansion slurry or fine aggregate concrete in the reserved holes of the bottom plate; filling micro-expansion slurry or lubricating grease into the redundant space in the anchor hole after tensioning and locking; the anchor and the bearing plate of the permanent anchor rod needing to adjust the tension are provided with a protective cover, and the cover is filled with anti-corrosive grease; the anchorage device and the bearing plate of the permanent anchor rod without adjusting the tension are buried in the concrete, and the thickness of the concrete protective layer is not less than 50 mm; the free section is sleeved in the sleeve, the free section sleeve is filled with anti-corrosion grease, special measures are taken to seal the anti-corrosion grease in the sleeve, and the sleeve extends into the transition pipe by at least 100 mm.

The anchoring section of the permanent anchor rod of the anchoring section adopts a I-grade waterproof structure, and the thickness of a cement paste protective layer is not less than 20 mm; the anchoring section of the permanent anchor rod in the non-corrosive environment is of a II-grade waterproof structure, the overlapping length of cement paste and the free section protection pipe is not less than 0.3m, and the thickness of the cement paste protection layer is not less than 20 mm.

A layer of cement-based capillary crystalline waterproof coating, a layer of polymer cement waterproof mortar with the thickness of 20mm and the diameter of the main rib, a layer of non-cured rubber asphalt waterproof coating, a waterproof layer of a coiled material and a waterproof protective layer are sequentially arranged on the top of the anchor rod piece and the periphery of the anchor hole at the anchoring position of the bottom plate; 1-2 circles of water-swelling sealing strips (circles) are arranged at the positions of the main ribs close to the waterproof protective layer; the enlarged head anchor, the anchor rod piece and the building bottom plate are poured with a solidification material for solidification combination, so that the enlarged head anticorrosion water stop anchor rod system is formed.

In the solidification material solidification structure of the at least two sections, the rod body of the lower anchor rod is a fixed section solidified in a ground (rock) layer, the rod body of the upper anchor rod is a free section, and a water stop sealing material is arranged between the free section and the anchoring section; the steel bar connector is connected between the anchor rod pieces to achieve the set length of the anchor rod.

The reducing cage and the periphery of other anchor heads are wrapped by the bag.

The anchor rod of the dispersion prestress type can deal with the integral failure of the anchor rod when a bearing plate or a tension bearing plate fails at one position when a main reinforcing steel bar is supported, and can obtain uniform tension or pressure force in a uniform stratum of the anchor rod.

The shapes of each part include/are not limited to a cylinder, a polygonal (circle internal tangent) cylinder, a truncated cone, a cone (including a cone and a polygonal cone), a trapezoid cylinder, a sphere and a bamboo joint cylinder; the cross-sectional plane pattern may be circular (elliptical), fan-shaped, arcuate, circular, etc. Polygons (including triangles, trapezoids, parallelograms, rhombuses, rectangles, squares, rays, pentagons, hexagons), and the like; the solid shape can also be varied: cubes, cuboids, cylinders, truncated cones, prisms, prismatic tables, cones, pyramids, and the like.

Further, the materials of each component include/but are not limited to steel, other metals, composite metals, glass fibers, basalt fibers, resins, geotextiles, canvasses, glass fiber reinforced resins, aramid fibers, ultra-high molecular weight polyethylene fibers, carbon fibers, boron olefins, polytetrafluoroethylene, graphene, carbon element-related materials and composites thereof, polymers, high polymer materials, nano materials, metal materials, non-metal materials and the like. The specification, the model, the shape, the number, the position, the size and the material can be adjusted according to different geological conditions of projects.

The invention has the beneficial effects that the invention provides the stress dispersion type anticorrosion water-stop anchor rod, overcomes the effect of anticorrosion and groundwater resistance of the existing anchor rod (pile), is firmer in structure with a concrete layer at the top end of the anchor rod and has a mechanical structure with more reasonable dispersion bearing capacity, and is applied to forming an expanded anchor rod or a pile foundation with a standard steel reinforcement framework to obtain the anchor rod or the pile foundation with better cost performance. In the solidification structure with at least two sections, the rod body of the lower section anchor rod is a fixed section solidified on a ground (rock) layer, the rod body of the upper section anchor rod is a free section (a typical structure without bonding main steel bars or fiber bars is adopted), and the free section can apply stress; after stress is applied (the upper end of the rod body and a foundation slab (waterproof slab) are cast and solidified into an integrated anchor rod body after the stress state is kept to be solidified or the final stress is added after the solidification), a fixed section solidified in the ground is used as an anchor end applied with the stress relatively, and the mode and the device for applying the stress can adopt the mode of the prior art.

The body of rod of hypomere stock is fixed for the fixed section that solidifies in the stratum and adopts the bellows better, especially struts the body of rod of hypomere stock, guarantees that the diameter of the concrete of fixed section is not influenced, and the cohesion with stratum or stratum is more firm.

There are a variety of water-swellable sealing materials: if the rod body interfaces of the upper and lower anchor rods are used, the main reinforcing steel bars are sleeved with the water-swelling sealing ring, and non-cured asphalt rubber waterproof paint (or PU or epoxy or other high-polymer waterproof materials), polymer cement waterproof mortar with the thickness of 2 cm, a waterproof coiled material and a waterproof protective layer are also used.

The anchoring force of the invention is obviously increased, the integrity of the whole anchor rod is good, and the invention is also used for the concrete reinforcement cage framework of the large-head pile foundation. The method is mainly used for the technical categories of anti-floating foundation pit support, side slope support, reinforcement and the like of the building basement. The technology of the invention can provide larger pulling resistance, has stable and reliable performance, and has good effects on reducing environmental pollution and accelerating project progress.

Drawings

FIG. 1 is a schematic view of a diameter fiber cage enlarged footing anchor rod with vertical ribs, which is formed by combining an expandable multi-layer ring plate spline loose (with a bottom support) structure and a mesh fiber cage;

FIG. 2 is a schematic view of a variable diameter steel reinforcement cage enlarged footing anchor rod with vertical ribs and capable of being unfolded with a multi-layer annular plate spline loose structure (with a bottom support);

FIG. 3 is a schematic representation of a deployable ground anchor enlarged head anchor without linkage rods;

FIG. 4 is a diagrammatic, pictorial illustration of a deployable earth anchor enlarged head anchor with linkage rods;

FIG. 5 is a schematic view of a deployable ground anchor head enlarged head anchor rod with linkage rod in combination with mesh plus fiber cage;

FIG. 6 is a schematic view of a deployable ground anchor head enlarged head anchor rod with linkage rod in combination with a cylinder mould and a fibre mould;

FIG. 7 is a schematic view of an unbonded variable diameter fiber cage enlarged footing anchor rod formed by combining a main rib sleeved with a thermoplastic pipe, an expandable multi-layer ring plate spline loose (with a bottom support) structure with a mesh fiber cage, wherein the expandable multi-layer ring plate spline loose (with a bottom support) structure is provided with a vertical rib;

FIG. 8 is a schematic view of a balloon type enlarged head anchor with a balloon sleeved with a variable diameter fiber cage;

FIG. 9 is a schematic view of a balloon type enlarged head anchor with a balloon sleeved with a variable diameter fiber cage;

FIG. 10 is a schematic view of a bladder type fiber cage formed by sewing a plurality of layers of fiber mesh sheets and the inner wall of a bladder to form a bladder type enlarged head anchor rod with a bladder core;

FIG. 11 is a schematic view of a bag-type fiber cage, in which multiple layers of fiber mesh sheets are sewn with the inner wall of a bag to form a bag-type enlarged head anchor rod with a bag core (fibers are added into the grouting material);

FIG. 12 is a schematic view of a bladder type fiber cage formed by sewing a multi-layer fiber net cage and the inner wall of a bladder to form a bladder type enlarged head anchor rod with a bladder core; FIG. 13 is a schematic view of a bag-type expanded head anchor rod with a bag core formed by sewing a multi-layer fiber net cage and the inner wall of a bag (fibers are added into a grouting material);

FIG. 14 is an enlarged view of FIG. 2 (D) anchored to the structural backing;

fig. 15 is an anchor assembly using a high-strength nut three-piece anchor to anchor an enlarged head anchor into a structural floor with corrosion and water proof instructions attached. Which is also the schematic structure of fig. 2 (D).

Fig. 16 is a schematic structural view of a general prestress type tension type anchor rod;

fig. 17 is a structural view of a distributed prestressed tension type anchor;

fig. 18 is a structural schematic view of a prestressed tension-type enlarged head anchor;

fig. 19 is a structural schematic view of a prestressed pressure type enlarged head anchor;

fig. 20 is a structural schematic view of a prestressed tension type corrosion prevention anchor rod for corrugated pipes;

fig. 21 is a structural view of a prestressed tension type corrosion prevention anchor rod for corrugated pipes.

Detailed Description

As shown in the figures, the specific structure related to the present invention includes: the concrete expansion joint comprises a centering support 1, a steel bar connector (connecting nut) 2, main steel bars 3 (a plurality of main steel bars 3-1), a concrete or mortar body (concrete body) 4 formed by combining an isolation sleeve and an expansion head steel bar cage, a concrete or mortar body 4-1 of a rod body, a hole wall 4-2, a limiter 5, a vertical rib 6, a power spring 7, a fixer 8, an adjustable mechanism 9, a spiral stirrup 10, an axial rod sleeve 11, a bearing plate 12, a high-strength nut 13 and a guide cap 14. The limiting nut in the limiter 5 can be an open type or a closed type structure, and the limiting nut can be an open type. In fig. 14-15, the fixing layer at the upper end of the axial rod adopts a high-strength nut three-piece anchoring form, a three-way high-strength nut or a flange anchoring structure. Concrete cushion 15, reinforcing steel bar 16, lower layer reinforcing steel bar 16-1, water stop adhesive tape 17, concrete bottom plate 18 (can also be used as concrete cushion), flange nut 19 or tee nut 20, steel backing plate 22, nut 21. And (5) diagonal drawing of the steel bars. 15-5 parts of cement-based capillary crystalline waterproof coating, 15-4 parts of polymer cement waterproof mortar with the thickness of 20mm and the diameter of a main reinforcement, 15-3 parts of non-cured rubber asphalt waterproof coating, 15-2 parts of coiled material waterproof layer and 15-1 parts of waterproof protective layer. A free section 31, an anchoring section 32, a steel pad anchor 33, an enlarged head 34 and an end plate 35; a steel backing plate 33-1 and a corrugated pipe 3-3. 4-3 water stop plug.

The basic structure of the foundation slab (waterproof slab) is an upper layer of steel bars and a lower layer of steel bars, the thickness of concrete can meet the requirement, the requirement of the prior art can be referred to be more than 40 times of the diameter of the anchor rod main body, but a steel backing plate and an anchor clamp can be arranged between the upper layer of steel bars and the lower layer of steel bars on the foundation slab (waterproof slab) or above the upper layer of steel bars; the anchor clamp on the steel backing plate is provided with a hole and a high-strength nut which applies stress to the steel bar or the steel strand to form a stress steel bar or a stress steel strand; the stress is applied by a jack and other mechanisms, and the magnitude of the applied stress is consistent with the design requirement. There are a variety of water-swellable sealing materials: if the rod body interfaces of the upper and lower anchor rods are used, the main reinforcing steel bars are sleeved with the water-swelling sealing rings, and non-cured asphalt rubber waterproof paint (or PU or epoxy or other high-molecular waterproof materials), polymer cement waterproof mortar with the thickness of 2 cm, waterproof coiled materials and waterproof protective layers are also used.

And a sealing strip and a sealing ring which are made of water-stop sealing materials, water-swelling sealing glue materials are arranged between the free section and the fixed section.

When the anchor rod piece is connected with the end plate bearing plate, the earth anchor head, the variable-diameter steel reinforcement cage, the fixed-diameter steel reinforcement cage, the bag or other anchor heads, steel reinforcements with the length suitable for the end plate bearing plate, the earth anchor head, the variable-diameter steel reinforcement cage, the fixed-diameter steel reinforcement cage, the bag or other anchor heads are reserved at the lower end of the anchor rod piece, the bottom of the anchor head is connected with an anchor backing plate, or the proper length of the steel reinforcements is reserved, and the bottom of the anchor head is connected with the top of the finished anchor rod head by using a connecting nut; or the rod piece and the anchor head are improved to enable the anchor rod piece and the variable-diameter reinforcement cage, the fixed-diameter reinforcement cage, the bag or other anchor heads to form an organic whole. The diameter-variable reinforcement cage or the expanded end plate structure (refer to the prior application of the applicant) and the like can adopt grids and meshes as reinforcing ribs, and the periphery of the grid or the meshes can be wrapped or provided with a bag, a protective cover, a guide cap, a guide centering bracket or an additional pulley (plate).

The loose mechanism 9, the stirrup 10, the main steel bar sleeve 11 and the bearing plate 12 for constraint release are basic components of the reducing steel bar cage of the applicant.

The main reinforcing steel bar is finish-rolled twisted steel bar, and the reducing reinforcing cage is matched as reinforcing material, and the main reinforcing steel bar and the reinforcing material are solidified together. Concrete or cement mortar, cement paste or other curable materials are wrapped and cured to form a main reinforcement (generally adopting finish-rolled thread steel bars) and an enlarged footing reinforcement cage 15 to form an anchor rod member system; concrete or mortar body (concrete body) 4 combined with the steel reinforcement cage of the enlarged footing. And arranging a proper number of hoisting buckles, hoisting rings and hoisting points at proper positions of the anchor rod piece.

The anchor rod body has at least two sections of solidification structures in the stratum, the rod body of lower section anchor rod is the anchor section of solidifying in the ground (rock) layer, and the slurry will have or not have end plate bearing plate anchor bolt anchor muscle and gradually stagger, and the position is in different heights, and is in the same place with the rock mass bonding. The body of the lower anchor rod is an anchoring section solidified in the ground (rock) layer, the grout body is pulled when slurry bears the anchor rod, the body of the upper anchor rod is a free section (a typical free section adopts a structure of unbonded main steel bars or fiber bars), and prestress is applied to form the dispersive tension type prestress anchor rod.

If the grouting body is pulled when the anchor rod bears the load, the rod body of the upper section of the anchor rod is a free section, and a common tension type prestressed anchor rod is formed. The lowest ends of the two end plates are respectively fixed with an end plate (a bearing plate or a bearing and pulling plate) at different heights.

The anchor rod body main reinforcement anchoring section is directly wrapped in concrete or other cementing materials, and particularly, an anchor head of the lower anchor rod assembly is expanded, so that the anchor rod body main reinforcement anchoring section is not influenced by the diameter of the expanded head part. There are a variety of water-swellable sealing materials: if the rod body interfaces of the upper and lower anchor rods are used, the main reinforcing steel bars are sleeved with the water-swelling sealing rings, and non-cured asphalt rubber waterproof paint (or PU or epoxy or other high-molecular waterproof materials), polymer cement waterproof mortar with the thickness of 2 cm, waterproof coiled materials and waterproof protective layers are also used.

The basic structure of the foundation slab (waterproof slab) is an upper layer of steel bars and a lower layer of steel bars, the thickness of concrete can meet the requirement, the requirement of the prior art can be referred to more than 40 times of the diameter of the anchor rod main body, but the anchor rod can be mechanically anchored by a plate penetrating bolt, and a steel backing plate and an anchor clamp are arranged between the upper layer of steel bars and the lower layer of steel bars on the foundation slab (waterproof slab) or above the upper layer of steel bars; the high-strength nut with the hole on the anchor clamp on the steel backing plate applies stress to the steel bar or the steel strand to form a prestressed steel bar or prestressed steel strand anchor rod; the stress is applied by a jack and other mechanisms, and the magnitude of the applied stress is consistent with the design requirement.

After the prestressed tendon tensioning operation is finished, timely performing anticorrosion protection on the anchorage device and the bearing plate, and pouring micro-expansion slurry or fine aggregate concrete in the reserved hole of the bottom plate; after tensioning and locking, continuously filling micro-expansion slurry or lubricating grease into the redundant holes of the anchorage device to fill the holes; the anchor and the bearing plate of the permanent anchor rod needing to adjust the tension are provided with a protective cover, and the cover is filled with anti-corrosive grease; the anchorage device and the bearing plate of the permanent anchor rod without adjusting the tension can be embedded in the concrete, and the thickness of the concrete protective layer is not less than 50 mm; the anchor and the bearing plate of the temporary anchor rod in a corrosive environment are provided with a protective cover, and the cover is filled with anticorrosive grease. The exposed anchorage device and the bearing plate of the temporary anchor rod in a non-corrosive environment can be protected by anticorrosive grease. And (3) anticorrosive treatment of the free section rod body: the free section is sleeved into the sleeve, the anti-corrosion grease is filled in the sleeve from the free section, special measures are taken to seal the anti-corrosion grease in the sleeve, and the sleeve is required to extend to at least 100mm into the transition pipe. And (3) performing anticorrosion protection on the anchoring section: 1. the anchoring section of the permanent anchor rod in a corrosive environment is in a I-level protection structure, and the thickness of a cement paste protection layer is not less than 20 mm; 2. the anchoring section of the permanent anchor rod in a non-corrosive environment is in a II-grade protection structure, but the overlapping length of cement paste and the free section protection pipe is not less than 0.3m, and the thickness of the cement paste protection layer is not less than 20 mm.

In the solidification structure of at least two sections, the rod body of the lower section anchor rod is a fixed section solidified in a ground (rock) layer, the rod body of the upper section anchor rod is free, and a water stop sealing material is arranged between the free section and the anchoring section. Respectively brushing a layer of cement-based capillary crystalline waterproof coating, 20-thick polymer cement waterproof mortar, non-cured rubber asphalt waterproof coating, a coiled material waterproof layer and a waterproof protective layer around the anchor hole, as shown in figure 14; and 1-2 circles of water-swelling sealing strips (circles) are arranged at the positions of the main ribs close to the waterproof protective layer. And a water-stopping sealing material is arranged between the free section and the fixed section. The rod body of the lower anchor rod is fixed on an expansion head (including the expansion head with the framework), and reference can also be made to an expanding expansion head bearing plate and an anchor rod of the applicant, CN 2021102594907.

In the anticorrosion constructional drawing, a plurality of steel bars or steel strand wires are distributed on the main shaft of the anchor or the position symmetrical to the main shaft to apply stress to form a dispersed prestress (pressure) type anchor rod; the pressure type free section and the anchoring and transition pipe pits;

when the anchor rod piece is connected with the variable-diameter reinforcement cage, the fixed-diameter reinforcement cage, the bag or other anchor heads, the length of the reinforcement which is matched with the length of the end plate bearing plate, the earth anchor head, the variable-diameter reinforcement cage, the fixed-diameter reinforcement cage, the bag or other anchor heads is reserved at the lower end of the anchor rod piece, the bottom of the anchor head is connected with the anchor backing plate, or the proper length of the reinforcement is reserved, and the reinforcement is connected with the top of the finished anchor rod head by using a connecting nut; or the rod piece and the anchor head are improved to enable the anchor rod piece and the end plate bearing plate, the ground anchor head, the variable-diameter steel reinforcement cage, the fixed-diameter steel reinforcement cage, the bag or other anchor heads to form an organic whole.

The steel bar connector is used for connecting the lengths of the ends of the finish rolling spiral steel bars; the steel bar connector and the anchor rod piece, namely the axial rod 3; the limiting device 5 is a limiting nut which can be of an open type or a closed type and the like, and a fixer of the shaft in the reinforcement cage of the enlarged footing is screwed on the anchor rod piece by the limiting nut (limiting position); the expanded head reinforcement cage, namely the reducing reinforcement cage, comprises main reinforcements of the reinforcements and reinforcing material for the configured reinforcements, namely the main reinforcements, a circular ring or a circular plate, a plurality of vertical reinforcements, a plurality of ribs and a ring-shaped fixer, wherein the circular ring or the circular plate is vertical to the main reinforcements, one ends of the vertical reinforcements are uniformly fixed on the circular ring or the circular plate, the other end or the middle part of each vertical reinforcement is connected with one end of one rib, a plurality of vertical reinforcements surround the main reinforcements, the other ends of the ribs are connected to the ring-shaped fixer, and the ring-shaped fixer is fixed or slides on a main reinforcement rod; a releasable spring or other form of variable and constant diameter reinforcement cage is employed. The above reinforcement cage and release structures have been disclosed by the applicant.

The number of the main steel bars in the anchor rod piece is one or more than one, so that the proper number of the design requirements is met.

The steel reinforcement cage and the ground anchor in the expanding head, the bearing plate grade structure have been the technical scheme that the applicant has applied for, reducing steel reinforcement cage or spring form spiral reinforcing bar, reducing steel reinforcement cage includes main reinforcing bar promptly main muscle, ring or crown plate and a plurality of perpendicular muscle, a plurality of ribs, circle form fixer, ring or crown plate are perpendicular with main reinforcing bar, the one end of a plurality of perpendicular muscle is at the ring or crown plate evenly fixed, the one end of a rib is all connected at the other end or the middle part of every perpendicular muscle, a plurality of perpendicular muscle encircle the main reinforcing bar, circle form fixer is received to the other end of rib, circle form fixer is fixed or slides on main reinforcing bar pole. The periphery of the vertical bar is provided with a stirrup, the stirrup and the vertical bar or the main bar are provided with fixed points, and the stirrup is in a rope shape; the main reinforcing steel bar is provided with an axial spring and is limited by a limiter or a limiting lath; the hooping is in an unused state when tightened, and the end part of the hooping is provided with a release device; the stirrup may also be in the form of a helical spring. The spiral stirrup is made of: glass fiber, aramid fiber, carbon fiber, graphene, carbon element-related materials, composite materials thereof and the like. The main reinforcing steel bar is a finish rolling threaded reinforcing steel bar, a reducing reinforcing steel bar cage is configured to be a reinforcing steel bar material, and the main reinforcing steel bar and the reinforcing steel bar configuration material are solidified together. Concrete or cement mortar, cement paste or other curable setting materials are wrapped and cured main reinforcements (generally finish-rolled twisted reinforcements are adopted) and the enlarged head reinforcement cage 15 form an anchor rod piece system; concrete or mortar body (concrete body) 4 combined with the steel reinforcement cage of the enlarged footing. And arranging a proper number of hoisting buckles, hoisting rings and hoisting points at proper positions of the anchor rod piece.

The shapes of the anticorrosion water-stop anchor rod reinforcement cage component include/are not limited to a cylinder, a polygonal (circular internal tangent) cylinder, a truncated cone, a cone (including a cone and a polygonal cone), a trapezoidal cylinder, a sphere and a bamboo joint-shaped cylinder; the cross-sectional plane pattern may be circular (elliptical), fan-shaped, arcuate, circular, etc. Polygons (including triangles, trapezoids, parallelograms, rhombuses, rectangles, squares, rays, pentagons, hexagons), and the like; the solid shape can also be varied: cubes, cuboids, cylinders, truncated cones, prisms, prismatic tables, cones, pyramids, and the like.

The materials of each part of the anticorrosion water stop anchor rod include/but are not limited to steel, other metals, composite metals, glass fibers, basalt fibers, resins, geotextiles, canvases, glass fiber reinforced resins, aramid fibers, ultra-high molecular weight polyethylene fibers, carbon fibers, boron olefins, polytetrafluoroethylene, graphene, carbon element-related materials and composite materials thereof, polymers, high polymer materials, nano materials, metal materials, non-metal materials and the like. The specification, model, shape, quantity, position, size and material, and all parameters can be adjusted according to different project geological conditions.

The anticorrosion water-stop anchor rod comprises an expanded head anchor head (an expandable end plate bearing plate, a ground anchor head, a fixed-diameter anchor head or an expanded head, a variable-diameter reinforcement cage, a variable-diameter cage, a fiber cage or various bag-type expanded heads, various expanded heads, end plates, bearing plates, ground anchor heads, a bearing body and the like), an anchor rod member, a fixing structure at the upper end of the anchor rod member and a reinforcement connector; the anchor rod piece adopts bonded or unbonded finish-rolled twisted steel, steel stranded wires and a prestressed pull rod, and the steel bar connector is used for the length connection of the anchor rod piece; the top of the anchor rod piece is anchored with the bottom plate of the building, and the bottom of the anchor rod piece is locked and anchored with various anchor heads; the bearing plate, the anchor rod piece and the anchoring piece of the expanding type expansion head anchor rod are combined with a poured solidification material comprising fiber concrete, super-fluid concrete, concrete and the like or cement mortar, fiber cement mortar, cement paste, fiber cement paste or other crystals capable of solidifying materials, so that an expansion head anticorrosion water-stop anchor rod system is formed; the corrosion-proof water anchor rod takes the bottom plate as a fulcrum for applying prestress or takes the pile top of the anchor rod as a fulcrum for applying prestress, and is tensioned and locked, so that a ground anchor head prestress expansion head anchor rod system is formed; the front end of the anchor rod piece is provided with a device which is connected or compounded with the end plate bearing plate, the ground anchor head, the variable-diameter steel reinforcement cage, the fixed-diameter steel reinforcement cage, the bag or other anchor heads to form an anchor rod application system.

The anchor rod piece is applicable to the fields of, but not limited to, anti-floating and tensile, road, mining, tunnel and bridge, foundation pit and mountain body slope protection and geological disaster treatment; also used in the fields of pressure-resistant engineering and the like.

The anchor rod body system comprises the following steps of: the method for overcoming the deformation of an anti-floating fixed-diameter anchor head or an expanded head anchor rod comprises the steps of drilling to a designed depth, carrying out high-pressure jet grouting construction or mechanical reaming construction, placing an anchor rod member and an end plate pressure-bearing plate, a ground anchor head, a variable-diameter steel reinforcement cage, a fixed-diameter steel reinforcement cage, a bag or an anchor rod body grafted by other anchor heads after hole forming, releasing a restraint mechanism to expand the variable-diameter steel reinforcement cage to a designed size after an expanded head with the variable-diameter steel reinforcement cage is in place, and then forming a pile at an expanded section and a gap between the whole anchor rod member and the hole by high-pressure grouting or pouring concrete to complete the lower section of an anchor rod pile.

And then pouring the upper section and the top end of the anchor rod piece, wherein the fixing layer at the upper end of the main reinforcing steel bar adopts a plurality of layers of waterproof layers, water-swelling sealing strips and sealing rings to seal the anchor rod body, and a high-strength nut three-piece anchoring form, a three-way high-strength nut or a flange anchoring structure is adopted in the anchor rod, and all the high-strength nuts 13 are adopted. The basic structure is that the top of a pull rod in an anchor rod is fixed by a flange nut embedded and sleeved with a steel bar (pull rod), or can be fixed by a nut through an anchor plate, or is connected with a steel bar framework system of a foundation slab by adopting other traditional anchors and applying stress; and finally, installing a formwork and pouring a concrete foundation slab fixing anchor plate. The number of the anchor rod pieces is 1 or 2-5 finish-rolled high-strength deformed steel bars or common deformed steel bars or steel strands; or the further variable-diameter steel reinforcement cage enlarged footing short pile is combined with the traditional cast-in-place pile, precast pile, steel pile, bamboo joint pile and the like to form a pile with combined functions of pulling resistance and pressure resistance.

Through a scientific method, the dynamic and traceable identification and detection of the whole course and the main nodes can be carried out on the states of the pile in the underground, the quality conditions of the engineering safety performance and the like, and the safety and the stability of the pile foundation are ensured.

Claims

1. An anticorrosion water stop anchor rod is characterized by comprising an anchor rod body and an anchoring structure at the top, wherein the anchor rod body is a main reinforcing steel bar, the main reinforcing steel bar adopts bonded or unbonded finish rolling thread reinforcing steel bars, steel strands or prestressed pull rods, the top of the anchor rod body is anchored with a building bottom plate, the bottom of the anchor rod body is anchored with a straight-through section or an enlarged head section by a concrete solidification material, and the concrete solidification material is combined with an anchor head and the main reinforcing steel bar to form an anchor rod pile system; the anchoring structure at the upper end of the main reinforcing steel bar adopts a three-piece high-strength nut or three-way high-strength nut or high-strength nut flange anchoring structure and is poured with concrete solidification materials; the expanding head section is an expandable end plate, a ground anchor, a pressure bearing plate, a fixed-diameter anchor head or a tree-root-shaped expanding head, a variable-diameter reinforcement cage, a fiber cage or a bag type or combined bag type expanding head; the water-swelling sealing material sealing ring or the sealing gasket is arranged on the main reinforcing steel bar of the anchor rod at the anchoring position of the top and the bottom of the anchor rod piece or the anchoring position of the anchor rod piece bottom and the straight-through section or the enlarged head section;

at least one waterproof and anticorrosive layer is sequentially and respectively arranged around the anchor hole at the anchoring position of the bottom plate at the top and the bottom of the anchor rod piece; and 1-2 circles of water-swelling sealing strips are arranged at the positions of the main ribs close to the waterproof protective layer.

2. An anticorrosion water-stop anchor rod as claimed in claim 1, wherein the anchor rod body has at least two sections of solidification structures in the ground layer, the rod body of the lower section anchor rod is a fixed anchoring section solidified in the ground layer, and the rod body of the upper section anchor rod is a free section and can be applied with prestress; the surface of the anchor bar of the main reinforcing steel bar or the fiber bar without the bonding bar is provided with an anti-corrosive grease layer, and a plastic film sleeve, a corrugated pipe or other sleeves are arranged outside the anti-corrosive grease layer;

the rod body of the lower anchor rod is made of a solidification material and is solidified in the anchoring section with the enlarged head stratum, the anchor rod and the rock body are bonded together through slurry, the solidification material is pulled when the anchor rod bears, and the rod body of the upper anchor rod is a free section, so that the prestressed tension type enlarged head end anchor rod is formed.

3. An anticorrosion water-stop anchor rod system as claimed in claim 1 or 2, wherein the anchor rod body is a through full length bonding rib in the ground layer, and a concrete setting material is poured, wherein the concrete setting material is fiber concrete, super-fluid concrete, cement mortar, fiber cement mortar, cement paste, fiber cement paste or other cementing materials and the like to form a full length bonding tension type anchor rod; or the anchor rod body is a through long straight full-length unbonded rib in the stratum, and an end plate bearing plate is fixed at the lowest end to form a common pressure type anchor rod; when the rod body of stock full length no bonding body of rod and end plate or other anchor head are fixed to be held and is wrapped up in enlarged footing concrete, the stock bears the weight of, acts on the slurry through the supporting body with pressure, and the grout pressurized forms pressure type prestressing force enlarged footing stock.

4. An anticorrosion and water-stop anchor rod system as claimed in claim 3, wherein the central axis of the anchor rod or the position symmetrical to the central axis is distributed with a plurality of reinforcing bars or steel strand wires for applying stress, the main reinforcing bars are a plurality of reinforcing bars or steel strand wires, the number of the main reinforcing bars is 1-12, the upper ends of the plurality of main reinforcing bars or steel strand wires are still coagulated and fixed with the foundation slab, the anchor bars and the lowest ends of the anchor segments are respectively fixed with an end plate which is staggered step by step and positioned at different heights, the anchor rod body is non-bonded reinforcing bars or steel strand wires, the end part of the anchor rod body is provided with a supporting body, when the anchor rod body is supported, the pressure is acted on the solidified material through the bearing body, the solidified material is pressed to form the dispersion type pressure type prestressed anchor rod, the lowest end of the steel bar or the steel strand is respectively fixed with an end plate (a bearing plate or a bearing and pulling plate) as a bearing body to be placed at different depths, so as to obtain the anchor rod of a dispersed prestress type;

the bearing bodies at the lowest ends of the steel bars or the steel strand wires are used for respectively fixing one end plate at different elevations.

5. An anticorrosion and water-stop anchor rod as claimed in any one of claims 1 to 4, wherein the anticorrosion and water-proof structure at the joint of the anchor and the bearing plate is: pouring micro-expansion slurry or fine aggregate concrete in the reserved holes of the bottom plate; filling micro-expansion slurry or lubricating grease into the redundant space in the anchor hole after tensioning and locking; the anchor and the bearing plate of the permanent anchor rod needing to adjust the tension are provided with a protective cover, and the cover is filled with anti-corrosive grease; the anchorage device and the bearing plate of the permanent anchor rod without adjusting the tension are buried in the concrete, and the thickness of the concrete protective layer is not less than 50 mm; the free section is sleeved in the sleeve, the free section sleeve is filled with anti-corrosion grease, special measures are taken to seal the anti-corrosion grease in the sleeve, and the sleeve extends into the transition pipe by at least 100 mm;

the anchoring section of the permanent anchor rod of the anchoring section adopts a I-grade waterproof structure, and the thickness of a cement paste protective layer is not less than 20 mm; the anchoring section of the permanent anchor rod in a non-corrosive environment is in a II-grade waterproof structure, the overlapping length of cement paste and the free section protection pipe is not less than 0.3m, and the thickness of the cement paste protection layer is not less than 20 mm.

6. An anticorrosion water-stop anchor rod as claimed in any one of claims 1 to 4, wherein a layer of cement-based capillary crystalline waterproof coating, a layer of polymer cement waterproof mortar with a thickness of 20mm and a main rib diameter, a layer of non-cured rubber asphalt waterproof coating, a layer of coil waterproof coating and a layer of waterproof protective layer are sequentially and respectively arranged around the anchor hole at the anchoring position of the anchor rod member and the anchor hole at the anchoring position of the bottom plate; 1-2 circles of water-swelling sealing strips are arranged at the positions of the main ribs close to the waterproof protective layer; the enlarged head anchor, the anchor rod piece and the building bottom plate are poured with a solidification material for solidification combination, so that the enlarged head anticorrosion water stop anchor rod system is formed.

7. An anticorrosion and water-stopping anchor rod as claimed in any one of claims 2 to 4, wherein the at least two sections of solidified material are in a solidified structure, the rod body of the lower section of anchor rod is a fixed section solidified on the ground (rock) layer, the rod body of the upper section of anchor rod is a free section, and a water-stopping sealing material is arranged between the free section and the anchoring section; be equipped with the steel bar connector and connect between the stock member, reach the settlement length of stock.

8. An antiseptic water stop anchor rod as defined in any one of claims 1 to 4, wherein the reducing cage and other anchor heads are peripherally wrapped with a bag.

9. An anticorrosion water-stop anchor rod as claimed in any one of claims 1 to 4, wherein the anchor rod is tensioned and locked with the bottom plate as a fulcrum for applying prestress or the pile top of the anchor rod as a fulcrum for applying prestress, thereby forming an anchor head prestress enlarging head anchor rod system;

the shapes of the anticorrosion water-stop anchor rod and each part include/are not limited to a cylinder, a polygonal (circular internal tangent) cylinder, a truncated cone, a cone (including a cone and a polygonal cone), a trapezoidal cylinder, a sphere and a bamboo joint-shaped cylinder; the cross-sectional plane pattern may be circular (elliptical), fan-shaped, arcuate, circular, etc. Polygons (including triangles, trapezoids, parallelograms, rhombuses, rectangles, squares, rays, pentagons, hexagons), and the like; the solid shape can also be varied: cube, cuboid, cylinder, round platform, prism, prismoid, circular cone, pyramid.

10. An anticorrosion water-stop anchor rod as claimed in any one of claims 1 to 4, wherein the material of each part of the anchor rod includes but is not limited to steel, other metals, composite metals, glass fiber, basalt fiber, resin, geotextile, canvas, glass fiber reinforced resin, aramid fiber, ultra-high molecular weight polyethylene fiber, carbon fiber, boron, polytetrafluoroethylene, graphene, carbon-related materials and their composites, macromolecules, high-molecular polymer materials, nano materials, metallic materials, non-metallic materials, etc. The specification, the model, the shape, the number, the position, the size and the material can be adjusted according to different geological conditions of projects.