CN217079388U - FRP/steel composite constraint UHPC porous anchor plate - Google Patents

Abstract

The utility model provides a FRP/steel composite restraint UHPC porous anchor slab, relates to the porous anchor slab field for prestressed concrete structure, the utility model discloses solve current ground tackle weight big, need durable protection's technical problem, provide a FRP/steel composite restraint UHPC porous anchor slab in this embodiment, adopted fibre reinforcement resin base combined material (FRP) high strength, durable characteristic as restraint material, adopted frustum shape steel pipe as composite restraint material, adopt Ultra High Performance Concrete (UHPC) material as the local pressure stress material, be applied to general prestressed concrete structure engineering have light, high strength, durable characteristic's novel anchor slab device.

Description

FRP/steel composite constraint UHPC porous anchor plate

Technical Field

The utility model relates to a prestressed concrete structure is with porous anchor slab field, concretely relates to FRP steel composite restraint UHPC porous anchor slab.

Background

Prestressed steel porous anchor plates have been widely used in civil engineering, and are generally made of structural steel, and porous anchors generally have large size, large self weight and high cost, and the convenience of field transportation needs to be improved. In addition, under severe environment, steel members need to be protected and blocked, the concrete is blocked at the prestressed anchoring end, and the long-term performance degradation of the steel structure anchorage device can influence the end anchoring and the whole service of the structure of the prestressed member, even the safety of the structure. Particularly, with the application development of the offshore engineering infrastructure structure, a novel anchoring device with the characteristics of light weight, high strength and durability needs to be developed, and the novel anchoring device has important significance for reducing the weight of the engineering structure and optimizing the long-term performance design of the structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that the existing anchorage device has heavy weight and is not beneficial to being applied to the offshore engineering infrastructure structure, and further provides an FRP/steel composite constraint UHPC porous anchor plate and a preparation method thereof;

an FRP/steel composite constraint UHPC porous anchor plate comprises an UHPC main body, an outer FRP constraint pipe, a constraint steel pipe and N constraint protection clamp bodies, wherein N is a positive integer;

the UHPC main body, the outer-layer FRP constraint pipe and the constraint steel pipe are coaxially arranged, the UHPC main body is of a round table-shaped structure, one end of the UHPC main body is uniformly provided with an anchor plate anchor hole, the outer-layer FRP constraint pipe and the constraint steel pipe are both round table-shaped, the outer-layer FRP constraint pipe is sleeved on the outer side of the UHPC main body, the outer-layer FRP constraint pipe is attached to the outer circular surface of the UHPC main body, the constraint steel pipe is inserted into the UHPC main body from a small opening end of the UHPC main body along the axial direction of the UHPC main body, the small opening end of the constraint steel pipe is arranged on the same side as the small opening end of the UHPC main body, the large opening end of the constraint steel pipe is arranged on the same side as the large opening end of the UHPC main body, and each constraint protection clamp is arranged in one anchor plate anchor hole;

furthermore, the anchor plate anchor hole is a tapered hole, the large-opening end of the anchor plate anchor hole is arranged on the large-opening end of the UHPC main body, and the small-opening end of the anchor plate anchor hole is arranged on the small-opening end of the UHPC main body;

furthermore, the restraint protection clamp body comprises a restraint spiral steel bar, a protection taper pipe and an anchor clamping piece, the restraint spiral steel bar, the protection taper pipe and the anchor clamping piece are sequentially sleeved from outside to inside, and the protection taper pipe is matched with the anchor hole of the anchor plate;

furthermore, the taper of the protective taper pipe is consistent with that of the anchor clamping piece;

a preparation method of an FRP/steel composite constraint UHPC porous anchor plate is realized by the following steps:

the method comprises the following steps: fixing the constraint steel pipe on the bottom die, wherein the outer FRP constraint pipe and the constraint steel pipe are coaxially arranged outside the constraint steel pipe;

step two: uniformly arranging a plurality of protective conical pipes in the restraint steel pipe set in the step one according to a preset position, and fixing each protective conical pipe on the bottom die;

step three: arranging a spiral restraint stirrup coaxially outside each protective taper pipe in the second step;

step four: pouring the UHPC material on the inner side of the outer-layer FRP constraint pipe and the inner side and the outer side of the constraint steel pipe which are arranged in the third step;

step five: after the UHPC material in the fourth step is poured, removing the bottom die, and naturally curing and forming to obtain the FRP/steel composite constraint UHPC porous anchor plate;

furthermore, the wall thickness of the restraint steel pipe in the first step is 3-10mmmm, and the material is Q345-460 strength steel;

further, in the first step, the outer-layer FRP constraint pipe is one of an aramid fiber reinforced resin matrix composite (AFRP), a basalt fiber reinforced resin matrix composite (BFRP), a carbon fiber reinforced resin matrix Composite (CFRP) and a glass fiber reinforced resin matrix composite (GFRP);

further, in the first step, the clearance between the constraint steel pipe and the outer-layer FRP constraint pipe is 10-30 mm;

furthermore, in the fourth step, the compressive strength grade of the anchor plate poured by the UHPC material is not lower than UHC120, and the tensile grade is not lower than UHT 10;

and further, removing the bottom die in the fifth step, and then naturally curing and forming, wherein the naturally curing time at the normal temperature is 28 days.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model provides a pair of FRP/steel composite restraint UHPC porous anchor slab and preparation method adopts FRP/steel composite restraint effect can effectively retrain UHPC's lateral deformation, makes UHPC be in three-dimensional pressurized state, improves UHPC's local compressive property, and control office crack formation to improve the atress performance of anchor slab.

2. The utility model provides a pair of FRP steel composite restraint UHPC porous anchor slab and preparation method, through the composite restraint of FRP with the steel, full play the advantage of two kinds of materials. FRP materials have high tensile strength but low stiffness; the steel has high strength and higher relative FRP rigidity, and the composite constraint design of the steel plate sleeve and the FRP pipe can not only exert the tensile strength advantages of the steel and the FRP, but also make up the defect of lower FRP rigidity, better constrain UHPC in a core area, limit the development of cracks and improve the local compressive strength and deformability of the UHPC.

3. The utility model provides a pair of FRP steel composite restraint UHPC porous anchor slab and preparation method adopts UHPC as the main pressure-bearing material of anchor slab, and its density is 25kN/m ³ And the weight of the composite anchor plate is about 1/3 of steel, so that the self weight of the composite anchor plate is about 1/3 of that of the steel anchor plate, and the reduction of the self weight is beneficial to high-altitude construction and field carrying operation.

4. The utility model provides a pair of porous anchor slab of FRP steel composite constraint UHPC and preparation method has utilized the strong characteristic of FRP class material anti-media erosion ability, even general prestressed anchorage shutoff appears the crack, the aggressive media in the air gets into, can not influence the long-term performance of compound anchor slab yet, and traditional steel anchor slab must carry out corresponding safeguard measure, and the inoxidizing coating inefficacy appears, will face the problem of long-term performance degradation.

5. The utility model provides a pair of FRP/steel composite restraint UHPC porous anchor slab and preparation method adopts FRP tubular product as the permanent template of pouring UHPC, has reduced the use amount of template from the anchor slab preparation, has greatly practiced thrift the manufacturing cost in the anchor slab preparation

6. The utility model provides a pair of FRP/steel composite restraint UHPC porous anchor slab and preparation method, the anchor slab is made the toper rather than current cylindrical, at first considers UHPC local pressurized problem in the anchor slab, makes the toper and can effectively restrict UHPC in the anchor slab because the crack that local pressurized produced, is similar to the effect of the indirect reinforcing bar under ordinary concrete local pressurized. Through the change to the anchor plate appearance, reserve in anchor plate department can be according to anchor plate bottom surface size preparation to stopping the hole, the effectual anchor plate that has reduced is opened a hole and is pressed the local adverse effect of below concrete.

Drawings

Fig. 1 is an exploded view of the anchor plate of the present invention;

fig. 2 is a schematic structural view of the anchor plate of the present invention;

fig. 3 is a side sectional view of the structure of the anchor plate in the present invention;

fig. 4 is a schematic view of the arrangement of the anchor plates in use according to the present invention;

in the figure, 1UHPC main body, 2 outer FRP constraint pipes, 3 constraint steel pipes, 4 constraint spiral steel bars, 5 protective taper pipes, 6 anchor clamping pieces, 7 pretightening force steel bars, 8 steel bar containing pipes, 9 pouring holes, 10 anchor plate anchor holes and 11UHPC protective layers are arranged.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and provides an FRP/steel composite constrained UHPC porous anchor plate, which comprises a UHPC main body 1, an outer FRP constrained pipe 2, a constrained steel pipe 3, and N constrained protection clamp bodies, wherein N is a positive integer;

the UHPC main body 1, the outer-layer FRP constraint pipe 2 and the constraint steel pipe 3 are coaxially arranged, the UHPC main body 1 is of a circular truncated cone-shaped structure, one end of the UHPC main body 1 is uniformly provided with an anchor plate anchor hole 10, the outer-layer FRP constraint pipe 2 and the constraint steel pipe 3 are both in a circular truncated cone shape, the outer-layer FRP constraint pipe 2 is sleeved on the outer side of the UHPC main body 1, the outer circular surface of the outer-layer FRP constraint pipe 2 and the outer circular surface of the UHPC main body 1 are attached, the constraint steel pipe 3 is inserted into the UHPC main body 1 from the small-mouth end of the UHPC main body 1 along the axial direction of the UHPC main body 1, the small-mouth end of the constraint steel pipe 3 is arranged on the same side as the small-mouth end of the UHPC main body 1, the large-mouth end of the constraint steel pipe 3 is arranged on the same side as the large-mouth end of the UHPC main body 1, and each constraint protection clamp is arranged in one anchor plate anchor hole 10.

In the embodiment, a fiber reinforced resin matrix composite (FRP) material with high strength and durability is used as a constraint material, a frustum-shaped steel tube is used as a composite constraint material, and an ultra-high performance concrete (UHPC) material is used as a local pressure stress material, so that the FRP/steel composite constraint UHPC porous anchor plate is a novel anchor plate device with light weight, high strength and durability characteristics, which is applied to general prestressed concrete structural engineering;

the utility model discloses combine the current situation of domestic and foreign prestressed anchorage board, constitute design and material optimization from the anchor slab structure and select the angle and set out, improve traditional steel anchor slab from great, with high costs, durability protection not enough, research and development provides a novel anchor slab's that has light, excel in, relatively durable, economic characteristics construction technique. The anchor plate is suitable for the prestressed anchor system of the general prestressed concrete structure and the ocean engineering concrete structure, can obviously reduce the dead weight and the manufacturing cost, and improves the durability of the anchor plate under the condition that the sealing plug has cracks.

The utility model provides a FRP/steel composite restraint UHPC anchor backing plate, which belongs to a clip type anchor backing plate, comprising a plate body and an anchor hole arranged in the middle of the plate body, wherein the plate body is in the shape of a round platform, and the anchor hole is reserved through a protective taper pipe with a certain angle; the FRP/steel composite constraint is formed by combining three materials, firstly, a Fiber Reinforced Plastic (FRP) is wound outside a forming die according to an FRP wet winding process to form an FRP constraint pipe, then a steel plate sleeve is placed inside the FRP constraint pipe, the FRP constraint pipe and the steel plate sleeve are concentrically positioned, then a conical steel pipe is fixed in position, and finally ultra-high performance concrete (UHPC) is poured, wherein the steel sleeve and the FRP pipe directly provide UHPC transverse constraint stress under the action of local pressure and serve as a permanent lateral template of the poured UHPC.

The outer layer adopts FRP constraint pipes, so that the medium erosion resistance of FRP is fully utilized, and the durability of the anchor backing plate is enhanced; meanwhile, the constraint effect of the composite reinforced internal steel plate casing pipe on the ultra-high performance concrete forms a composite constraint system stressed together with the constraint steel pipe.

The strength grade of the material of the constraint steel pipe and the FRP constraint pipe is selected and determined by the design calculation of the anchor plate product according to the current relevant national standard. The composite constraint system of the FRP pipe and the internal constraint steel pipe provides local pressure bearing capacity and deformation capacity for the core UHPC and is used as a permanent external template of post-cast core UHPC;

wherein the constraint steel pipe 3 and the outer layer FRP constraint pipe 2 are concentric circular truncated cone cylindrical structural components with the same slope.

The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the anchor plate anchoring hole 10 described in the first embodiment, in the present embodiment, the anchor plate anchoring hole 10 is a tapered hole, the large-mouth end of the anchor plate anchoring hole 10 is disposed on the large-mouth end of the UHPC body 1, and the small-mouth end of the anchor plate anchoring hole 10 is disposed on the small-mouth end of the UHPC body 1. Other components and connection modes are the same as those of the first embodiment.

The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and is further limited to the restraint protection clamp described in the second embodiment, in the present embodiment, the restraint protection clamp includes a restraint spiral reinforcement bar 4, a protection taper tube 5 and an anchor clamp piece 6, the restraint spiral reinforcement bar 4, the protection taper tube 5 and the anchor clamp piece 6 are sequentially sleeved from outside to inside, and the protection taper tube 5 is matched with the anchor hole 10 of the anchor plate. Other components and connection modes are the same as those of the first embodiment.

In the embodiment, the spiral restraint stirrups 4 are arranged outside the protection taper pipe 5, the protection taper pipe 5 provides surface reinforcement penetration and extrusion protection for the anchor hole, the taper of the protection taper pipe 5 is consistent with relevant parameters of the clamping piece selected for use in design, and after maintenance is finished, the protection taper pipe 5 participates in anchor plate work and is used for being matched with the clamping piece. Wherein the protective taper pipe 5 is molded as a permanent template of the pores and is a part of the anchor plate, and the protective taper pipe 5 and the anchor plate are integrated.

The fourth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines the protection taper pipe 5 according to the third embodiment, and in the present embodiment, the taper of the protection taper pipe 5 is the same as the taper of the anchor clip 6. The other components and the connection mode are the same as those of the second embodiment.

The fifth concrete implementation mode: the embodiment is explained by referring to fig. 1 to 4, and the embodiment provides a preparation method of an FRP/steel composite constraint UHPC porous anchor plate, which is realized by the following steps:

the method comprises the following steps: fixing a restraint steel pipe 3 on a bottom die, and coaxially arranging an outer-layer FRP restraint pipe 2 and the restraint steel pipe 3 outside the restraint steel pipe 3;

step two: uniformly arranging a plurality of protective conical pipes 5 in the restraint steel pipe 3 set in the step one according to a preset position, and fixing each protective conical pipe 5 on the bottom die;

step three: arranging a spiral restraint stirrup 4 coaxially outside each protective taper pipe 5 in the second step;

step four: pouring the UHPC material on the inner side of the outer-layer FRP constraint pipe 2 and the inner side and the outer side of the constraint steel pipe 3 which are arranged in the third step;

step five: and after the UHPC material in the fourth step is poured, removing the bottom die, and naturally curing and forming to obtain the FRP/steel composite constraint UHPC porous anchor plate.

In the embodiment, the outer-layer FRP constraint pipe 2 is prepared by selecting corresponding FRP sectional materials and auxiliary materials thereof according to relevant national or industrial standards and adopting a continuous winding process, and the constraint steel pipe (3) is prepared by selecting corresponding constraint steel pipe sectional materials according to relevant national or industrial standards and processing according to corresponding design sizes;

the raw material selection and the proportioning design of the UHPC are in accordance with the material regulation of ultra-high performance concrete premix (T/CBMF96-2020/T/CCPA20-2020) and ultra-high performance concrete basic performance and test method (T/CBMF 37; T/CCPA 7), and the compressive strength grade is not lower than UHC 120. In the process of pouring UHPC, an anchor hole is reserved by using the protective conical pipe (5), the effect of penetrating a reinforcement pore is achieved, a spiral restraint stirrup 4 is arranged outside the protective conical pipe 5, the protective conical pipe 5 provides surface reinforcement penetration and extrusion protection for the anchor hole, the taper of the protective conical pipe 5 is consistent with relevant parameters of a clamping piece selected for use in design, and after maintenance is finished, the protective conical pipe 5 participates in anchor plate work and is used for being matched with the clamping piece. Wherein the protective taper pipe 5 is molded as a permanent template of the pores and is a part of the anchor plate, and the protective taper pipe 5 and the anchor plate are integrated. The number of the anchor holes is determined according to the design requirement, and the arrangement mode of the anchor holes is executed according to the existing national standard of anchorage devices, clamps and connectors for prestressed tendons (GB/T14370);

ultra-high Performance Concrete (UHPC) refers to a fiber reinforced cement-based composite material having both Ultra-high impermeability and mechanical properties. The fiber modified material has ultrahigh mechanical property and excellent durability, and the brittleness characteristic of the fiber modified material is improved. The utility model discloses with FRP steel restraint UHPC porous anchor slab from the theoretical problem of structural constraint, further improve UHPC fragility to FRP (fiber reinforced composite) and UHPC (ultra high performance concrete) have good corrosion resistance, use these two kinds of materials can effectively promote traditional steel prestressed anchor slab from great, with high costs, the problem of durability protection;

in the fifth step of the method, after the UHPC material is poured and coated with the film for natural curing for 24 hours, the film is removed and coated for curing to the design age of 28 days, and the FRP/steel composite constraint UHPC anchor plate is obtained.

The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 to 4, and the present embodiment is further limited to the first step of the fifth embodiment, in which the thickness of the restraining steel pipe 3 in the first step is 3 to 10mmmm, and the material is Q345 to 460 strength steel. The other components and the connection mode are the same as those of the fourth embodiment.

The seventh embodiment: the present embodiment is described with reference to fig. 1 to 4, and the present embodiment further defines a first step described in a sixth embodiment, in the first step, the outer-layer FRP constraining tube 2 is one of an aramid fiber reinforced resin matrix composite (AFRP), a basalt fiber reinforced resin matrix composite (BFRP), a carbon fiber reinforced resin matrix Composite (CFRP), and a glass fiber reinforced resin matrix composite (GFRP). The other components and the connection mode are the same as those of the fourth embodiment.

The specific implementation mode is eight: the present embodiment will be described with reference to fig. 1 to 4, and the present embodiment further defines the first step of the fourth embodiment, and in the present embodiment, the gap between the restraining steel pipe 3 and the outer-layer FRP restraining pipe 2 in the first step is 10mm to 30 mm. The other components and the connection mode are the same as those of the fourth embodiment.

The specific implementation method nine: referring to fig. 1 to 4, this embodiment is further limited to step four described in the fourth embodiment, where in this embodiment, the compression strength grade of the anchor plate after being poured with the UHPC material in step four is not lower than UHC120, and the tensile grade is not lower than UHT 10. The other components and the connection mode are the same as those of the fourth embodiment.

The detailed implementation mode is ten: the present embodiment will be described with reference to fig. 1 to 4, and the present embodiment is further limited to the fifth step described in the fourth embodiment, in which the bottom mold is removed and then the natural curing molding is performed, and the natural curing time at the normal temperature is 28 days. The other components and the connection mode are the same as those of the fourth embodiment.

The present invention has been disclosed in the above embodiments, but not limited to the present invention, and any person skilled in the art can make some changes or modifications to the equivalent embodiments without departing from the technical scope of the present invention, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments will still belong to the technical scope of the present invention.

Example 1

The present embodiment takes a nine-hole anchor plate as an example.

The FRP/steel composite constraint UHPC anchor plate comprises a UHPC main body 1, a protective layer 11, a constraint steel pipe 3, an outer FRP constraint pipe 2 and a protection taper pipe 5; the steel pipe 3 is in a frustum shape, the protective layer 11 is arranged on the outer side of the steel pipe 3, the outer FRP constraint pipe 2 is arranged on the outer side of the protective layer 11, and the steel pipe 3 and the outer FRP constraint pipe 2 form an FRP/steel composite constraint system; pouring a UHPC main body 1 on the inner side of the FRP constraint pipe 2 and the inner side of the constraint steel pipe 3, arranging 9 protection taper pipes 5 and constraint spiral stirrups 4 thereof in the UHPC main body 1, and forming an anchor hole 10 through the pipe bodies of the protection taper pipes 5.

The constraint steel pipe 3 and the outer-layer FRP constraint pipe 2 are concentric, coaxial and same-slope frustum-shaped structures.

The taper of the protective taper pipe 5 is consistent with the parameters of the selected anchor clamping piece 6.

The preparation method of the FRP/steel composite constraint UHPC anchor plate specifically comprises the following steps:

firstly, preparing a truncated cone cylindrical restraint steel pipe 3 with the taper of 30 degrees by adopting a welding process; adopting a wet winding technology, stretching and attaching the FRP cloth coated with the impregnating adhesive on a special forming machine tool to form an outer FRP constraint pipe 2 on an FRP pipe forming mould;

the method comprises the following steps: fixing a restraint steel pipe 3 on a bottom die, and coaxially arranging an outer-layer FRP restraint pipe 2 and the restraint steel pipe 3 outside the restraint steel pipe 3;

step two: uniformly arranging 9 protective taper pipes 5 in the restraint steel pipe 3 set in the step one according to a preset position, and fixing each protective taper pipe 5 on the bottom die;

step three: arranging a spiral restraint stirrup 4 coaxially outside each protective taper pipe 5 in the second step;

step four: pouring the UHPC material on the inner side of the outer-layer FRP constraint pipe 2 and the inner side and the outer side of the constraint steel pipe 3 which are arranged in the third step;

step five: and after the UHPC material is poured in the fourth step, naturally standing and maintaining for 24 hours, then removing the mold, and then laminating, maintaining at normal temperature for 28 days to reach the design strength, thereby obtaining the FRP/steel composite constraint UHPC anchor plate.

Wherein: step one, the wall thickness of the constraint steel pipe 3 is 3mm, the material is Q345 strength steel, the FRP cloth is CFRP, the height of the FRP cloth pipe is 10mm higher than the height of the built-in steel plate sleeve 2, the basic performance of the UHPC in step four meets the requirements of ultra-high performance concrete premix (T/CBMF96-2020/T/CCPA20-2020) and ultra-high performance concrete basic performance and test method (T/CBMF 37-2018; T/CCPA 7-2018), the compressive strength grade is not lower than UHC120 grade, and in the pouring in step four, the UHPC is poured into the inner side of the FRP pipe and the inner side of the constraint steel pipe 3 (the outer side of each protection conical pipe 5), the spiral constraint stirrup 4 is inserted, then the vibration is carried out fully, the UHPC is stopped and is naturally maintained for 24 hours, and then the mould is removed; and D, coating a film after removing the die, maintaining at normal temperature for 28 days until the design strength is reached, wherein the protective taper pipe 5 is a galvanized thin-wall steel pipe, the height of the protective taper pipe 5 is the same as that of the main body part of the UHPC of the anchor plate, and the taper is consistent with the parameters of the selected anchor device clamping piece 6.

Claims (4)

1. The FRP/steel composite constraint UHPC porous anchor plate is characterized in that: the porous anchor plate comprises a UHPC main body (1), an outer-layer FRP constraint pipe (2), a constraint steel pipe (3) and N constraint protection clamp bodies, wherein N is a positive integer;

the UHPC main body (1), the outer-layer FRP constraint pipe (2) and the constraint steel pipe (3) are coaxially arranged, the UHPC main body (1) is in a circular truncated cone-shaped structure, N anchor plate anchor holes (10) are uniformly formed in one end of the UHPC main body (1), the outer-layer FRP constraint pipe (2) and the constraint steel pipe (3) are in circular truncated cone shapes, the outer-layer FRP constraint pipe (2) is sleeved on the outer side of the UHPC main body (1), the outer FRP constraint pipe (2) is attached to the outer circular surface of the UHPC main body (1), the constraint steel pipe (3) is inserted into the UHPC main body (1) from the small opening end of the UHPC main body (1) along the axial direction of the UHPC main body (1), the small opening end of the restraint steel pipe (3) and the small opening end of the UHPC main body (1) are arranged on the same side, the large opening end of the restraint steel pipe (3) and the large opening end of the UHPC main body (1) are arranged on the same side, and each restraint protection clamp body is arranged in one anchor plate anchor hole (10).

2. The FRP/steel composite constraint UHPC porous anchor plate as claimed in claim 1, which is characterized in that: the anchor plate anchor hole (10) is a conical hole, the large-opening end of the anchor plate anchor hole (10) is arranged on the large-opening end of the UHPC main body (1), and the small-opening end of the anchor plate anchor hole (10) is arranged on the small-opening end of the UHPC main body (1).

3. The FRP/steel composite constraint UHPC porous anchor plate as claimed in claim 1, which is characterized in that: the restraint protection clamp body comprises a restraint spiral steel bar (4), a protection taper pipe (5) and an anchor device clamping piece (6), the restraint spiral steel bar (4), the protection taper pipe (5) and the anchor device clamping piece (6) are sequentially sleeved from outside to inside, and the protection taper pipe (5) is matched with the anchor hole (10) of the anchor plate.

4. The FRP/steel composite constraint UHPC porous anchor plate as claimed in claim 3, which is characterized in that: the taper of the protective taper pipe (5) is consistent with that of the anchor clamping piece (6).

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