CN215330708U - Prefabricated reinforced concrete shear wall - Google Patents
Prefabricated reinforced concrete shear wall Download PDFInfo
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- CN215330708U CN215330708U CN202120509918.4U CN202120509918U CN215330708U CN 215330708 U CN215330708 U CN 215330708U CN 202120509918 U CN202120509918 U CN 202120509918U CN 215330708 U CN215330708 U CN 215330708U
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Abstract
The utility model discloses a prefabricated reinforced concrete shear wall, which comprises an external reinforced concrete wall and a round FRP (fiber reinforced Plastic) confined concrete core; the external reinforced concrete wall comprises external concrete and a reinforcement cage; the plurality of circular FRP constraint concrete cores are vertically arranged and are embedded in the external reinforced concrete wall at intervals in the left-right direction, and the two circular FRP constraint concrete cores are respectively positioned at the left end and the right end of the external reinforced concrete wall; each round FRP constraint concrete core comprises round FRP pipes and core concrete, the cross sections of the round FRP pipes are round, external concrete is poured on the outer surfaces of the round FRP pipes, and the fiber directions of the round FRP pipes are annular or approximate to annular; the core concrete is filled in the round FRP pipe. The utility model has high bearing capacity, strong anti-seismic performance, light weight and low cost, can obtain higher technical and economic benefits, and can be used in engineering structures such as assembled shear wall structures and the like.
Description
Technical Field
The utility model relates to the technical field of building structures, in particular to a prefabricated reinforced concrete shear wall.
Background
In recent years, with the increasing of building height and the popularization of fabricated buildings, the prefabricated shear wall has received wide attention in the engineering field. For a shear wall, the seismic performance is one of the important performance evaluation criteria. For example, in high-rise and super high-rise buildings, a shear wall section satisfying high axial compression ratio performance by using a limited shear wall section area is one of the targets pursued in the engineering field. At present, the cross sections of the shear walls which are commonly used are reinforced concrete, steel pipe concrete, steel plate concrete, section steel concrete and the like. The concrete is a main pressure-bearing material, so that the advantage of strong concrete pressure-bearing capacity is exerted, but the concrete material is easy to soften when being in large strain, the integrity is poor, and the improvement of the anti-seismic performance is not facilitated.
The FRP constraint concrete member is widely researched aiming at the defect that concrete is easy to soften in the section of a common member. The FRP constraint can limit the lateral expansion of the concrete, thereby improving the axial pressure bearing capacity and the deformation capacity of the concrete. The round FRP pipe constraint core is arranged in the shear wall, namely, local constraint is provided for concrete in the shear wall, the bearing capacity and the deformability of the local concrete are improved, and the performance of the shear wall is improved.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, one objective of the present invention is to provide a prefabricated reinforced concrete shear wall, which has high bearing capacity, strong seismic performance, light weight and low cost, can obtain high technical and economic benefits, and can be used in engineering structures such as an assembled shear wall structure.
According to the prefabricated reinforced concrete shear wall provided by the embodiment of the utility model, the prefabricated reinforced concrete is a high-performance prefabricated reinforced concrete shear wall reinforced by adopting a round FRP constraint concrete core, and comprises the following components:
an external reinforced concrete wall comprising external concrete and a reinforcement cage embedded in the external concrete;
the plurality of circular FRP constraint concrete cores are vertically arranged and are embedded in the external reinforced concrete wall at intervals in the left-right direction, and the two circular FRP constraint concrete cores are respectively positioned at the left end and the right end of the external reinforced concrete wall; each of the round FRP constraint concrete cores comprises round FRP pipes and core concrete, wherein,
the cross section of the round FRP pipe is round, the external concrete is poured on the outer surface of the round FRP pipe, and the fiber direction of the round FRP pipe is annular or approximate to annular;
the core concrete is filled in the round FRP pipe.
According to the prefabricated reinforced concrete shear wall provided by the embodiment of the utility model, the plurality of round FRP constraint concrete cores are adopted, the round FRP constraint concrete cores utilize the advantages of light weight, high strength and good corrosion resistance of FRP materials, common concrete, various environment-friendly concrete or ultra-high performance concrete can be used as fillers of round FRP pipes, novel sustainable development materials can be used for saving the cost, high performance materials can be efficiently utilized to obtain smaller section size, and the characteristics of high bearing capacity, strong anti-seismic performance, light weight and the like of the high-performance prefabricated reinforced concrete shear wall reinforced by the round FRP constraint concrete cores are ensured. The round FRP constraint concrete core is simple in structure and can be prefabricated by a factory, so that the construction difficulty is greatly reduced. The round FRP constraint concrete core is arranged in the prefabricated reinforced concrete shear wall, so that higher technical and economic benefits can be obtained, and the round FRP constraint concrete core can be used in engineering structures such as an assembled shear wall structure.
According to some embodiments of the utility model, the core concrete is plain concrete, environmentally friendly concrete or ultra high performance concrete.
According to a further embodiment of the present invention, the environment-friendly concrete is seawater sea sand concrete, phosphogypsum concrete, recycled aggregate concrete or steel slag concrete.
According to some embodiments of the utility model, a plurality of the round FRP-confined concrete cores are distributed bilaterally symmetrically in the outer reinforced concrete wall.
According to some embodiments of the utility model, the round FRP pipe is manufactured using a filament winding process or a filament drawing process.
According to some embodiments of the utility model, each of the circular FRP-constraining concrete cores further comprises longitudinal reinforcing steel bars located within the circular FRP tube and embedded in the core concrete.
According to some embodiments of the utility model, the reinforcement cage comprises a plurality of vertical reinforcements, a plurality of transverse reinforcements, a plurality of first stirrups and a plurality of tie reinforcements; the plurality of vertical steel bars are arranged in a spaced and spaced mode in the horizontal direction, and the upper ends of the plurality of vertical steel bars extend out of the top surface of the external concrete; the transverse reinforcing steel bars are arranged in a layered mode at intervals in the vertical direction, the left ends of the transverse reinforcing steel bars extend out of the left side face of the external concrete, and the right ends of the transverse reinforcing steel bars extend out of the right side face of the external concrete; a part of the first stirrups is positioned at the vertical reinforcing steel bars at the left part and is arranged in layers at intervals in the vertical direction, and the rest of the first stirrups is positioned at the vertical reinforcing steel bars at the right part and is arranged in layers at intervals in the vertical direction; the plurality of tie bars are positioned at the vertical bars in the middle.
According to a further embodiment of the present invention, the reinforcement cage further includes a plurality of second stirrups, each of the plurality of second stirrups is a closed stirrup, a part of the plurality of second stirrups is arranged in layers at the vertical reinforcement at the left end and spaced apart in the up-down direction, the rest of the plurality of second stirrups is arranged in layers at the vertical reinforcement at the right end and spaced apart in the up-down direction, the circular FRP-confined concrete core at the left end of the external reinforced concrete wall is disposed in a part of the plurality of second stirrups, and the circular FRP-confined concrete core at the right end of the external reinforced concrete wall is disposed in the rest of the plurality of second stirrups.
According to a further embodiment of the utility model, the lower end of each vertical steel bar is nested with an embedded grouting sleeve, the embedded grouting sleeve is positioned in the external concrete, the lower end of the embedded grouting sleeve does not extend out of the external concrete, and each embedded grouting sleeve is provided with a grouting hole and a grout discharging hole.
According to some embodiments of the utility model, the external reinforced concrete wall is also pre-provided with diagonal bracing mounting holes.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic perspective view of a prefabricated reinforced concrete shear wall according to an embodiment of the present invention.
Fig. 2 is a top view of a prefabricated reinforced concrete shear wall according to an embodiment of the present invention.
FIG. 3 is a schematic perspective view of a round FRP constraint concrete core of a prefabricated reinforced concrete shear wall according to an embodiment of the utility model.
Reference numerals:
prefabricated reinforced concrete shear wall 1000
External reinforced concrete wall 1 external concrete 101 reinforcement cage 102 vertical reinforcement 1021
The first stirrup 1023 of the transversal bar 1022 connects the second stirrup 1025 of the bar 1024
Inclined support mounting hole 103 pre-embedded lifting steel bar 104
Round FRP constraint concrete core 2 round FRP pipe 201 core concrete 202
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A prefabricated reinforced concrete shear wall 1000 according to an embodiment of the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the prefabricated reinforced concrete shear wall 1000 according to the embodiment of the utility model is a high-performance prefabricated reinforced concrete shear wall 1000 reinforced by using a round FRP-confined concrete core 2, that is, the round FRP-confined concrete core 2 is arranged inside a common prefabricated concrete section to improve the bearing capacity of a part of the section.
The prefabricated reinforced concrete of the embodiment of the utility model comprises an external reinforced concrete wall 1 and a round FRP constraint concrete core 2; the external reinforced concrete wall 1 comprises external concrete 101 and a reinforcement cage 102 embedded in the external concrete 101; the number of the circular FRP constraint concrete cores 2 is multiple, the circular FRP constraint concrete cores 2 are vertically arranged and are embedded in the external reinforced concrete wall 1 at intervals in the left-right direction, and the two circular FRP constraint concrete cores 2 are respectively positioned at the left end and the right end of the external reinforced concrete wall 1; each round FRP constraint concrete core 2 comprises a round FRP pipe 201 and core concrete 202, the cross section of the round FRP pipe 201 is round, external concrete 101 is poured on the outer surface of the round FRP pipe 201, and the fiber direction of the round FRP pipe 201 is annular or approximate to annular; the core concrete 202 is filled in the round FRP pipe 201.
Specifically, the prefabricated reinforced concrete shear wall 1000 includes an external reinforced concrete wall 1 and a round FRP-confined concrete core 2; that is, the prefabricated reinforced concrete shear wall 1000 is mainly composed of the outer reinforced concrete wall 1 and the round FRP-confined concrete core 2. Can set up a plurality of circle FRP restraint concrete cores 2 according to the design demand in outside reinforced concrete wall 1, a plurality of circle FRP restraint concrete cores 2 are vertical setting and bury underground in outside reinforced concrete wall 1 at the left and right sides orientation interval ground, and wherein two circle FRP restraint concrete cores 2 are located outside reinforced concrete wall 1's left and right sides both ends department respectively, can obtain required high performance prefabricated reinforced concrete shear force wall 1000.
It should be noted that, the circular FRP pipe 201 adopted in the circular FRP confined concrete core 2 to constrain the core concrete 202 can fully exert the characteristics of low FRP strength and good ductility, so as to perform the reinforcement function of the circular FRP confined concrete core 2 in the prefabricated reinforced concrete shear wall 1000.
In terms of materials, FRP (Fiber Reinforced Polymer/Plastic, Fiber Reinforced Plastic/resin-based material) is a high-performance material formed by mixing a Fiber material and a base material in a certain ratio, and then extruding, pultrusion and winding the mixture through a special die. In the embodiment of the present invention, the fiber direction of the circular FRP pipe 201 is a circumferential direction or an approximate circumferential direction, and the circular FRP pipe can be produced by a fiber winding process or a fiber drawing and winding process. The fiber winding process or the fiber drawing and winding process has the advantages of high automation degree, stable product quality, high fiber content and the like. .
The round FRP pipe 201 made of the FRP material has the advantages of light weight, large hardness, high mechanical strength and the like, so that after the round FRP pipe 201 restrains the core concrete 202, the rigidity and the ductility of the round FRP constraint concrete core 2 can be enhanced, and the structural strength and the local compressive bearing capacity in the cross section normal direction of the round FRP constraint concrete core 2 can be improved, so that the round FRP pipe meets the use standard of building materials. Here, the normal direction of the circular FRP-restrained concrete core 2 means a direction perpendicular to the tangential direction of the circular FRP-restrained concrete core 2.
And the FRP material is strong in permeability resistance and good in corrosion resistance, low-cost concrete with corrosivity can be used as a filler, when the adopted environment-friendly concrete is doped with corrosive raw materials (such as phosphorus-containing gypsum and steel slag), the round FRP pipe 201 can effectively prevent corrosive substances from permeating to the outer layer, and the material with low corrosion resistance is avoided. Therefore, the service life of the round FRP-restrained concrete core 2 is extended. Meanwhile, when the environment-friendly concrete is produced, corrosive substances in the raw materials do not need to be removed, and the processing steps and the manufacturing cost of the environment-friendly concrete are reduced.
The fiber winding direction of the circular FRP pipe 201 is circumferential or approximately circumferential, for convenience of description, in the following description, the circumferential direction refers to a direction indicated by Q in fig. 1, the axial direction refers to a direction indicated by P in fig. 1, and the radial direction refers to a direction indicated by O in fig. 3, which will not be described again. By utilizing the fiber wound in the FRP annular direction or the similar annular direction, the circular FRP pipe 201 can play a passive restraint role when the core concrete 202 is compressed and expanded, the characteristic of strong compression capacity of the concrete material is fully exerted, and the axial bearing capacity of the concrete is improved under the triaxial stress state.
Particularly, the utility model discloses the people discovers through a large amount of experiments, circle FRP restraint concrete core 2's stress-strain curve is the bilinear change of growth shape, circle FRP restraint concrete core 2's bearing capacity continues to rise after the cross-section is surrendered promptly, circle FRP restraint concrete core 2 can provide more excellent bearing capacity and anti-seismic performance, the partial pressurized bearing capacity of its cross-section normal direction is showing and is improving, rigidity, intensity and ductility also rise to some extent, anti-seismic performance obtains the reinforcing, thereby the more excellent cross-section of technological economic benefits has been obtained.
That is to say, the prefabricated reinforced concrete shear wall 1000 according to the embodiment of the present invention adopts the circular FRP restrained concrete core 2 formed by the circular FRP pipes 201 restraining the filled core concrete 202, as a part of the whole prefabricated reinforced concrete shear wall 1000, so as to enhance the overall performance of the prefabricated reinforced concrete shear wall 1000.
When the prefabricated reinforced concrete shear wall 1000 according to the embodiment of the utility model is constructed, the circular FRP tubes 201 may be prefabricated and poured into the external reinforced concrete shear wall, then the core concrete 202 is poured, and after the core concrete 202 is cured for a period of time, the external concrete 101 is poured, so that the external concrete 101 is poured on the outer surfaces of the circular FRP tubes 201 to form a whole.
In addition, the circular FRP constraint concrete core 2 can be prefabricated by a factory, namely the circular FRP constraint concrete core 2 can be used as an independent building material to be manufactured and sold by the factory in a centralized way, and a construction unit purchases the circular FRP constraint concrete cores 2 with corresponding specifications and quantity according to the requirements of a construction site. During on-site construction, the round FRP constraint concrete core 2 has the effect similar to building materials such as reinforcing steel bars, the round FRP constraint concrete core 2 is combined with other building materials at the stage of building a model of the prefabricated reinforced concrete shear wall 1000, and then the external concrete 101 is poured, so that the construction difficulty is greatly reduced.
According to the prefabricated reinforced concrete shear wall 1000 provided by the embodiment of the utility model, the plurality of circular FRP constraint concrete cores 2 are adopted, the circular FRP constraint concrete cores 2 utilize the advantages of light weight, high strength and good corrosion resistance of FRP materials, common concrete, various environment-friendly concrete or ultra-high performance concrete can be used as fillers of the circular FRP pipes 201, novel sustainable development materials can be utilized to save cost, high performance materials can be utilized efficiently to obtain smaller section size, and the high performance prefabricated reinforced concrete shear wall 1000 reinforced by the circular FRP constraint concrete cores 2 has the characteristics of high bearing capacity, strong earthquake resistance, light weight and the like. Since the round FRP-confined concrete core 2 has a simple structure and can be prefabricated by a factory, the construction difficulty is greatly reduced. Higher technical and economic benefits can be obtained by utilizing the form that the round FRP constraint concrete core 2 is arranged inside the prefabricated reinforced concrete shear wall 1000, and the method can be used in engineering structures such as an assembled shear wall structure and the like.
According to some embodiments of the utility model, the core concrete 202 is ordinary concrete, environmentally friendly concrete, or ultra high performance concrete.
It is to be understood that when the core concrete 202 is normal concrete for the core concrete 202, the normal concrete is concrete in the conventional sense with respect to recycled concrete. Because the common concrete has the characteristics of stable market development, mature construction technology and the like, the common concrete has the advantages of convenient raw material purchase, short construction time, high quality and the like.
When the core concrete 202 is the environment-friendly concrete, the environment-friendly concrete can be seawater sea sand concrete, phosphogypsum concrete, recycled aggregate concrete or steel slag concrete and the like; the seawater sea sand concrete and the phosphogypsum concrete are difficult to apply to actual engineering due to the fact that production raw materials of the seawater sea sand concrete and the phosphogypsum concrete have strong corrosivity and the traditional metal building material which is easy to corrode is difficult to apply, and the FRP material has strong corrosion resistance and can be used with the environment-friendly concrete; the recycled aggregate concrete and the steel slag concrete have poor integral performance due to the fact that production materials of the recycled aggregate concrete and the steel slag concrete are building or industrial waste materials, and are not suitable for being applied to actual engineering. Therefore, when the core concrete 202 is made of environment-friendly concrete, the urban construction is facilitated, the problems of waste treatment, limestone resources and effective energy utilization are solved, the environmental load is reduced, the crisis of traditional resource failure is relieved, the cost is reduced, and the economic benefit is improved.
When the core concrete 202 is ultra-high performance concrete, the ultra-high performance concrete has ultra-high strength and ultra-high durability, can reduce the axial compression ratio of the concrete structure, and has the advantages of reduced cross-sectional area, light weight, better performance of the concrete structure, and the like.
According to some embodiments of the utility model, the plurality of circular FRP constraint concrete cores 2 are distributed in the external reinforced concrete wall 1 in a bilateral symmetry manner, so that the prefabricated reinforced concrete shear wall 1000 can be well ensured to have the advantages of high bearing capacity, strong earthquake resistance and the like.
According to some embodiments of the present invention, the round FRP pipe 201 is processed by a filament winding process or a filament drawing process, and thus, the processing automation degree is high, the product quality is stable, and the fiber content is high.
According to some examples of the utility model, each round FRP-confined concrete core 2 further comprises longitudinal steel bars (not shown) which are located inside the round FRP pipe 201 and embedded in the core concrete 202. It will be appreciated that the provision of longitudinal reinforcement in the core concrete 202 improves the cross-sectional load carrying capacity of the round FRP constraining concrete core 2.
According to some embodiments of the utility model, the reinforcement cage 102 includes a plurality of vertical reinforcement bars 1021, a plurality of transverse reinforcement bars 1022, a plurality of first stirrups 1023, and a plurality of tie reinforcement bars 1024; the plurality of vertical steel bars 1021 are arranged in a spaced and alternate mode at intervals in the horizontal direction, and the upper ends of the plurality of vertical steel bars 1021 extend out of the top surface of the external concrete 101 so as to be conveniently connected with other parts; the plurality of transverse reinforcing bars 1022 are arranged in layers at intervals in the up-down direction, the left ends of the plurality of transverse reinforcing bars 1022 protrude out of the left side surface of the external concrete 101 to facilitate connection with other components, and the right ends of the plurality of transverse reinforcing bars 1022 protrude out of the right side surface of the external concrete 101 to facilitate connection with other components; a part of the first stirrups 1023 of the plurality of first stirrups 1023 are positioned at the vertical steel bars 1021 at the left part and are arranged in layers at intervals in the up-down direction, and the rest of the second stirrups 1025 of the plurality of first stirrups 1023 are positioned at the vertical steel bars 1021 at the right part and are arranged in layers at intervals in the up-down direction; the plurality of tie bars are located at the middle vertical bar 1021. It can be understood that the reinforcement cage 102 formed by the vertical reinforcements 1021, the transverse reinforcements 1022, the first stirrups 1023 and the tie reinforcements can better restrain the external concrete 101, so that the prefabricated reinforced concrete shear wall 1000 has good stress performance.
According to a further embodiment of the present invention, the reinforcement cage 102 further includes a plurality of second stirrups 1025, each of the plurality of second stirrups 1025 is a closed stirrup, a part of the plurality of second stirrups 1025 is arranged in layers at the vertical reinforcement 1021 at the left end portion and spaced apart in the up-down direction, the rest of the plurality of second stirrups 1025 is arranged in layers at the vertical reinforcement 1021 at the right end portion and spaced apart in the up-down direction, the round FRP-confined concrete core 2 at the left end of the exterior reinforced concrete wall 1 is disposed in the part of the plurality of second stirrups 1025, and the round FRP-confined concrete core 2 at the right end of the exterior reinforced concrete wall 1 is disposed in the rest of the plurality of second stirrups 1025. It can be understood that the stress performance of the prefabricated reinforced concrete shear wall 1000 is better by arranging the second stirrups 1025.
According to a further embodiment of the present invention, the lower end of each vertical steel bar 1021 is nested with an embedded grouting sleeve 3, the embedded grouting sleeve 3 is located in the external concrete 101, the lower end of the embedded grouting sleeve 3 does not extend out of the external concrete 101, and each embedded grouting sleeve 3 is provided with a grouting hole 301 and a grout discharging hole 302. It can be understood that the pre-buried grouting sleeve 3 can be conveniently connected with another prefabricated reinforced concrete member (such as the prefabricated reinforced concrete shear wall 1000 of the embodiment); for example, when two prefabricated reinforced concrete shear walls 1000 of the present embodiment are assembled and connected in the vertical direction, one end of the vertical steel bar 1021 exposed from one of the prefabricated reinforced concrete shear walls 1000 may be inserted into the pre-embedded grouting sleeve 3 of the other prefabricated reinforced concrete shear wall 1000, then concrete is poured into the pre-embedded grouting sleeve 3 through the grouting hole 301, and meanwhile, air in the pre-embedded grouting sleeve 3 is discharged through the grout outlet 302, so that the concrete in the pre-embedded grouting sleeve 3 is self-compacted, thereby reliably assembling and connecting the two prefabricated reinforced concrete shear walls 1000 of the present embodiment.
According to some embodiments of the present invention, the external reinforced concrete wall 1 is further provided with four predetermined inclined strut mounting holes 103, for example, as shown in fig. 3, four predetermined inclined strut mounting holes 103 are provided in the external concrete wall 101, and two are provided near the upper end and the lower end of the wall; through the preset inclined strut installation holes 103, the prefabricated reinforced concrete shear wall 1000 of the embodiment can provide better positioning support during installation.
According to some embodiments of the utility model, the external reinforced concrete wall 1 is further provided with embedded lifting bars 104. By arranging the pre-buried hoisting steel bars 104, the prefabricated reinforced concrete shear wall 1000 of the embodiment can be conveniently hoisted during installation.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a prefabricated reinforced concrete shear force wall which characterized in that, prefabricated reinforced concrete is for adopting the reinforced high performance prefabricated reinforced concrete shear force wall of round FRP restraint concrete core, includes:
an external reinforced concrete wall comprising external concrete and a reinforcement cage embedded in the external concrete;
the plurality of circular FRP constraint concrete cores are vertically arranged and are embedded in the external reinforced concrete wall at intervals in the left-right direction, and the two circular FRP constraint concrete cores are respectively positioned at the left end and the right end of the external reinforced concrete wall; each of the round FRP constraint concrete cores comprises round FRP pipes and core concrete, wherein,
the cross section of the round FRP pipe is round, the external concrete is poured on the outer surface of the round FRP pipe, and the fiber direction of the round FRP pipe is annular or approximate to annular;
the core concrete is filled in the round FRP pipe.
2. The precast reinforced concrete shear wall of claim 1, wherein the core concrete is ordinary concrete, environmentally friendly concrete, or ultra high performance concrete.
3. The precast reinforced concrete shear wall of claim 2, wherein the environment-friendly concrete is seawater sea sand concrete, phosphogypsum concrete, recycled aggregate concrete or steel slag concrete.
4. The prefabricated reinforced concrete shear wall of claim 1, wherein a plurality of the circular FRP constraint concrete cores are distributed in the outer reinforced concrete wall in bilateral symmetry.
5. The prefabricated reinforced concrete shear wall of claim 1, wherein the round FRP pipes are processed by a fiber winding process or a fiber drawing process.
6. The precast reinforced concrete shear wall of claim 1, wherein each of the circular FRP constraint concrete cores further comprises longitudinal reinforcing steel bars located within the circular FRP tubes and embedded in the core concrete.
7. The precast reinforced concrete shear wall of claim 1, wherein the reinforcement cage comprises a plurality of vertical reinforcements, a plurality of transverse reinforcements, a plurality of first stirrups, and a plurality of tie reinforcements; the plurality of vertical steel bars are arranged in a spaced and spaced mode in the horizontal direction, and the upper ends of the plurality of vertical steel bars extend out of the top surface of the external concrete; the transverse reinforcing steel bars are arranged in a layered mode at intervals in the vertical direction, the left ends of the transverse reinforcing steel bars extend out of the left side face of the external concrete, and the right ends of the transverse reinforcing steel bars extend out of the right side face of the external concrete; a part of the first stirrups is positioned at the vertical reinforcing steel bars at the left part and is arranged in layers at intervals in the vertical direction, and the rest of the first stirrups is positioned at the vertical reinforcing steel bars at the right part and is arranged in layers at intervals in the vertical direction; the plurality of tie bars are positioned at the vertical bars in the middle.
8. The prefabricated reinforced concrete shear wall of claim 7, wherein the reinforcement cage further comprises a plurality of second stirrups, each of the plurality of second stirrups is a closed stirrup, a part of the plurality of second stirrups are arranged in layers at the vertical reinforcement at the left end and spaced apart in the up-down direction, the rest of the plurality of second stirrups are arranged in layers at the vertical reinforcement at the right end and spaced apart in the up-down direction, the round FRP-confined concrete core at the left end of the outer reinforced concrete wall is disposed in a part of the plurality of second stirrups, and the round FRP-confined concrete core at the right end of the outer reinforced concrete wall is disposed in the rest of the plurality of second stirrups.
9. The prefabricated reinforced concrete shear wall according to claim 7, wherein a pre-buried grouting sleeve is nested at the lower end of each vertical steel bar, the pre-buried grouting sleeve is located in the external concrete, the lower end of the pre-buried grouting sleeve does not extend out of the external concrete, and each pre-buried grouting sleeve is provided with a grouting hole and a grout discharging hole.
10. The prefabricated reinforced concrete shear wall of any one of claims 1 to 9, wherein inclined strut mounting holes are also preset on the outer reinforced concrete wall.
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