CN109680874B - Precast concrete shear connector, self-supporting precast element and manufacturing method thereof - Google Patents
Precast concrete shear connector, self-supporting precast element and manufacturing method thereof Download PDFInfo
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- CN109680874B CN109680874B CN201910117059.1A CN201910117059A CN109680874B CN 109680874 B CN109680874 B CN 109680874B CN 201910117059 A CN201910117059 A CN 201910117059A CN 109680874 B CN109680874 B CN 109680874B
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- 239000011178 precast concrete Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 65
- 239000010959 steel Substances 0.000 claims abstract description 65
- 238000010008 shearing Methods 0.000 claims abstract description 38
- 238000004873 anchoring Methods 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims abstract 2
- 239000004567 concrete Substances 0.000 claims description 38
- 230000002787 reinforcement Effects 0.000 claims description 23
- 238000005520 cutting process Methods 0.000 claims description 16
- 239000011150 reinforced concrete Substances 0.000 claims description 11
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 9
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 24
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/32—Columns; Pillars; Struts of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
A precast concrete shear connector, self-supporting precast components and its preparation method, precast concrete shear connector, including a section of cut steel piece or welded steel component, at least one corner point of the end edge is cut into cambered surface or inclined plane, or at least one edge of the end edge of the body is cut into cambered surface or inclined plane, the surface is fixedly connected with shear connector or/and anchor assembly; the shearing resistant member is perpendicular to the side wall surface of the body and is fixedly connected with the side wall surface of the body, and the anchoring piece is fixedly connected to one side end face of the body in the length direction. The precast concrete shearing-resistant connecting piece has special effect on improving the mechanical property of the joint surface of the precast concrete member, and is beneficial to improving the construction speed and the construction quality.
Description
Technical Field
The invention belongs to the field of prefabricated parts, and particularly relates to a shear connector of a prefabricated concrete part, the prefabricated part and a manufacturing method of the shear connector.
Background
Building industrialization is the key point of construction and development in recent years, and comprises the steps of greatly promoting the assembly type building, encouraging the assembly type construction of building enterprises, constructing a national-level assembly type building production base, improving the proportion of the assembly type building to a newly built building and the like. In the reinforced precast reinforced concrete shear wall and the structural system in the prior art, the connecting piece is an important factor for realizing the construction safety of the precast concrete structure, the earthquake-resistant bearing capacity of the joint surface and the earthquake-resistant ductility. The connecting piece that current is commonly used is the planar steel sheet, and the planar steel sheet generally has hoist and mount inconvenient etc. when as the connecting piece, still because there is stress concentration in the junction of corner and concrete of connecting piece, makes concrete local destruction or fracture easily in the course of working, finally leads to prefabricated component defective rate high, leads to prefabricated component out-of-plane rigidity not enough easily when using this kind of prefabricated component to be under construction, exists very big construction risk simultaneously. Even if the construction is completed, the mechanical property of the prefabricated part is poor, and the prefabricated structure is locally damaged under the actions of earthquake and repeated load.
Therefore, how to find a suitable precast concrete element connecting piece, which solves the above problems when precast and can self-support precast concrete elements during construction, has important significance in building industrialization.
Disclosure of Invention
The invention aims to provide a precast concrete shear connector, a self-supporting precast member and a manufacturing method thereof, which aim to solve the problem that the existing precast concrete connecting member is inconvenient to hoist Kong Diaozhuang; when the edge bulge of the component is connected with the concrete, stress concentration exists, so that the concrete is locally damaged or cracked, the defective rate of the prefabricated component is high, the out-of-plane rigidity is easily caused by construction, and the technical problem of construction risk exists; the technical problem that the prefabricated part is poor in mechanical property and causes local damage of the prefabricated structure under the actions of earthquake and repeated load is solved.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a precast concrete shear connector comprises a body, wherein the body is a section of cut steel piece or welded steel member, at least one corner point of the end edge of the body is cut into an arc surface or an inclined surface, or at least one edge of the end edge of the body is cut into an arc surface or an inclined surface,
the surface of the body is fixedly connected with a shear resistant piece or/and an anchoring piece;
the shear member is a bolt, a steel bar, a steel plate or a section steel which is vertical to the side wall surface of the body and fixedly connected with the shear member;
the anchoring piece is a steel bar, an anchor bolt, a steel plate or a section steel which is fixedly connected to one side end face of the body in the length direction.
The cross section of the body is in a shape of a straight line, an I shape, an H shape, an L shape, a rectangle or a king shape.
A hoisting hole is formed in the center of one side end portion of the body.
The utility model provides a prefabricated component of self-supporting, includes reinforced concrete's post main part, still includes the part pre-buried at least one precast concrete shear connection spare of post main part link, the body buries in the middle of the cross section of post main part, pre-buried length is not less than 20mm, exposes the part of post main part and exposes length not less than 20mm, the post reinforcement cage of post main part includes post stirrup and post longitudinal reinforcement, the upper portion and/or the lower part of post reinforcement cage expose at the link surface of post main part.
The utility model provides a self-supporting prefabricated component, includes reinforced concrete's roof beam main part, still includes the part pre-buried at least one precast concrete shear connection piece of roof beam main part link, the body buries the cross section centre of roof beam main part in the middle, buries the length and is not less than 20mm, exposes the length of exposing of roof beam main part and is not less than 20mm, the roof beam reinforcement cage of roof beam main part includes roof beam stirrup and roof beam longitudinal reinforcement, the upper portion of roof beam reinforcement cage exposes at the upside surface of roof beam main part.
The self-supporting prefabricated part comprises a plate body of a reinforced concrete wall or plate, at least two prefabricated concrete shear connectors partially embedded at the connecting end of the plate body, the length of the body embedded into the plate body is not less than 20mm, the length of the exposed plate body is not less than 20mm, the upper end part of the plate body is at least fixedly connected with one upper body in the middle or symmetrically connected with two upper bodies at intervals,
the lower end part of the plate body is provided with a connecting groove which corresponds up and down and has a corresponding size corresponding to the upper body, the connecting groove is concave relative to the lower end surface of the plate body,
or the lower end part of the plate body is provided with a lower body which corresponds up and down and corresponds to the upper body, the lower body is outwards protruded relative to the lower end surface of the plate body, and the connection mode of the lower body and the plate body is the same as that of the upper body and the plate body.
The reinforcing mesh of the plate body comprises plate horizontal stirrups and plate vertical longitudinal ribs, the end parts of the plate vertical longitudinal ribs extend out of the upper side and the lower side of the plate body respectively, and the plate horizontal stirrups are located in the plate body or extend out of the left side and the right side of the plate body respectively.
A method for manufacturing a precast concrete shear connector comprises the following steps:
step one, selecting materials: selecting the model and the material of the body;
step two, paying off: paying off according to a design drawing;
step three, cutting: cutting the section steel to form a cut section steel piece, or cutting the steel plate and then welding to form a welded steel member;
and fourthly, arc making or corner cutting: the corner points or the edge edges are processed in a way of cutting to form inclined planes or continuously polishing to form cambered surfaces;
fifthly, welding a shear-resistant piece or/and an anchoring piece on the body;
and step four, a hoisting hole is formed in the end part of the body before the step two.
A manufacturing method of a self-supporting prefabricated part comprises the following manufacturing steps:
step one, processing stirrups, longitudinal ribs and precast concrete shearing-resistant connecting pieces; the stirrups and the longitudinal bars are made into corresponding reinforcement cages;
step two, manufacturing a mould and supporting the mould;
placing the manufactured precast concrete shearing-resistant connecting piece at a preset position of the reinforcement cage and fixedly connecting the precast concrete shearing-resistant connecting piece with the reinforcement cage;
pouring concrete of the prefabricated part;
and fifthly, curing the concrete to the preset strength.
A manufacturing method of a self-supporting prefabricated part comprises the following manufacturing steps:
step one, processing a plate horizontal stirrup, a plate vertical longitudinal bar and a precast concrete shearing-resistant connecting piece; manufacturing the plate horizontal stirrups and the plate vertical longitudinal ribs into corresponding reinforcing steel bar meshes;
step two, manufacturing a mould and supporting the mould;
step three, paving a reinforcing mesh on the lower side of the plate body;
fourthly, placing the manufactured precast concrete shearing-resistant connecting piece at a preset position of the upper end part and connecting the precast concrete shearing-resistant connecting piece with the reinforcing steel bar net sheet in the third step,
placing an inner die of the manufactured connecting groove or a manufactured precast concrete shearing-resistant connecting piece at a preset position of the lower end part of the plate body and connecting the inner die with the reinforcing steel bar net piece in the third step;
step five, paving a reinforcing mesh on the upper side of the plate body;
step six, arranging tie bars between the upper and lower steel bar meshes;
pouring plate body concrete;
and step eight, curing the concrete to a preset strength.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
the prefabricated concrete shear connector adopts a mode of preprocessing the corner positions of the profile steel pieces or the welding pieces, reduces or avoids stress concentration at the joint of the corner positions of the connector and the concrete, thereby avoiding local damage or cracking of the concrete and improving the yield of prefabricated components. The stress concentration is reduced, the durability of the joint between the component and the concrete can be ensured after the construction of the component is completed, and the mechanical property of the prefabricated component is improved, so that the function of the prefabricated component is ensured under the action of earthquake and repeated load. The precast concrete shearing-resistant connecting piece has special effect on improving the mechanical property of the joint surface of the precast concrete member, is beneficial to improving the construction speed and the construction quality, can directly use the embedded steel rib as hoisting, can be provided with hoisting holes at the position exposing the concrete, and is convenient for construction hoisting.
The self-supporting prefabricated component and the column are connected into a whole to form the novel prefabricated concrete column, so that the shearing resistance of the joint surface of the prefabricated column is effectively improved, the self-supporting prefabricated concrete column can bear the self load of the prefabricated concrete column during construction, and the construction speed is improved.
The self-supporting precast member and the beam are connected into a whole to form a novel precast concrete beam, so that the shearing capacity of the junction surface of the precast beam is effectively improved, the self-supporting precast concrete beam can bear the self load of the precast concrete beam during construction, and the construction speed is improved.
The self-supporting prefabricated part is connected with the plate into a whole to form a novel prefabricated concrete wallboard or floor slab, so that the shearing resistance of the junction surface of the prefabricated wallboard is effectively improved, the self-supporting prefabricated concrete wallboard can bear the self load of the prefabricated concrete wallboard during construction, and the construction speed is improved.
The self-supporting prefabricated component has the combined advantages of the prefabricated concrete shearing-resistant connecting piece and the prefabricated concrete structure, and compared with the common reinforced concrete wallboard, the self-supporting prefabricated component has the advantages that the earthquake resistance is greatly improved, the house is not easy to collapse in an earthquake, and the rejection rate of the prefabricated component is reduced. The precast concrete shear connector can increase out-of-plane rigidity of the precast member, so that the member can bear self-load during construction, and on-site construction quality and on-site control are facilitated to be improved. The welding connection quality between the prefabricated components is easy to control and ensure, and the construction speed is high.
Drawings
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 is a schematic view of an embodiment of the precast concrete segment of the present invention.
Fig. 2 is a second schematic view of an embodiment of the precast concrete segment of the present invention.
Fig. 3 is a schematic illustration of an embodiment of a precast concrete segment of the present invention.
Fig. 4 is a schematic illustration of an embodiment of a precast concrete segment of the present invention.
Fig. 5 is a fifth schematic view of an embodiment of the precast concrete segment of the present invention.
Fig. 6 is a schematic cross-sectional view of fig. 1-5.
Fig. 7 is a schematic view of the self-supporting prefabricated element of the present invention as a column.
Fig. 8 is a schematic cross-sectional view of fig. 7.
Fig. 9 is a schematic view of the self-supporting prefabricated element of the present invention as a beam.
Fig. 10 is a schematic cross-sectional view of fig. 9.
FIG. 11 is a schematic view of an embodiment of the self-supporting prefabricated element of the present invention as a wall.
FIG. 12 is a schematic diagram of a second embodiment of the self-supporting prefabricated element of the present invention as a wall.
Fig. 13 is a three schematic views of an embodiment of the self-supporting prefabricated element of the present invention as a wall.
Fig. 14 is a schematic cross-sectional view of fig. 11-13.
Reference numerals: 1-body, 2-cambered surface, 3-inclined plane, 4-shear part, 5-anchor assembly, 6-lifting hole, 7-post main part, 71-post stirrup, 72-post longitudinal bar, 8-beam main part, 81-beam stirrup, 82-beam longitudinal bar, 9-plate body, 91-plate horizontal stirrup, 92-plate vertical longitudinal bar, 10-downside body, 11-upside body, 12-connection groove.
Detailed Description
An embodiment of a precast concrete shear connector is shown in fig. 1 and 6, and comprises a body 1, wherein the body is a section of cut steel piece, and four corner points of the edge of the end of the body are cut into cambered surfaces 2.
The surface of the body is fixedly connected with a shear member 4. The shear member 4 is a peg which is perpendicular to the side wall surface of the body and fixedly connected thereto, and in other embodiments may be a steel bar, a steel plate or a section steel.
The cross-sectional shape of the body 1 in this embodiment is i-shaped, but may be a straight, H-shaped, L-shaped, rectangular or king-shaped in other embodiments.
Embodiment two referring to fig. 2 and 6, a precast concrete shear connector comprises a body 1, the body is a section of cut steel member, and four corner points of the edge of the end of the body are cut into inclined planes 3.
The surface of the body is fixedly connected with an anchor 5. The anchoring piece 5 is a steel bar with a hook fixedly connected to one end face of the body in the length direction, and the steel bar is perpendicular to the surface of the body. In other embodiments, anchors, steel plates or section steel are also possible.
The cross-sectional shape of the body 1 in this embodiment is i-shaped, but may be a straight, H-shaped, L-shaped, rectangular or king-shaped in other embodiments.
Embodiment three referring to fig. 3 and 6, a precast concrete shear connector comprises a body 1, the body is a section of welded steel member, and four edges of the end edge of the body are cut into inclined planes 3.
The surface of the body is fixedly connected with a shear member 4. The shear member 4 is a peg which is perpendicular to the side wall surface of the body and fixedly connected thereto, and in other embodiments may be a steel bar, a steel plate or a section steel.
The cross-sectional shape of the body 1 in this embodiment is i-shaped, but may be a straight, H-shaped, L-shaped, rectangular or king-shaped in other embodiments.
A hoisting hole 6 is formed in the center of one side end part of the body 1.
Fourth embodiment referring to fig. 4 and 6, a precast concrete shear connector comprises a body 1 which is a welded steel member, and four edges of the end edge of the body are cut into inclined planes 3.
The surface of the body is fixedly connected with a shear member 4 and an anchoring member 5.
The shear member 4 is a peg which is perpendicular to the side wall surface of the body and fixedly connected thereto, and in other embodiments may be a steel bar, a steel plate or a section steel.
The surface of the body is fixedly connected with an anchor 5. The anchoring piece 5 is a steel bar with a hook fixedly connected to one end face of the body in the length direction, and the steel bar is perpendicular to the surface of the body. In other embodiments, anchors, steel plates or section steel are also possible.
The cross-sectional shape of the body 1 in this embodiment is i-shaped, but may be a straight, H-shaped, L-shaped, rectangular or king-shaped in other embodiments.
A hoisting hole 6 is formed in the center of one side end part of the body 1.
In the fifth embodiment, as shown in fig. 5 and 6, unlike in the fourth embodiment, the anchor 5 is a steel plate fixedly connected to one end surface of the body in the length direction, the steel plate is perpendicular to the surface of the body, the body is fixedly connected to the center of the steel plate, and the size of the steel plate is larger than that of the body.
In practical application, the length of the body 1 ranges from 10mm to 3000mm. The body 1 may be made of stainless steel, weather-resistant steel, high-strength steel or ordinary steel. The outer side of the body 1 is entirely or partially plated with an anti-corrosion layer, and the anti-corrosion layer is galvanized, aluminized or anti-corrosion paint.
The manufacturing method of the precast concrete shearing-resistant connecting piece comprises the following manufacturing steps:
step one, selecting materials: selecting the model and the material of the body;
step two, paying off: paying off according to a design drawing;
step three, cutting: cutting the section steel to form a cut section steel piece, or cutting the steel plate and then welding to form a welded steel member;
and fourthly, arc making or corner cutting: the corner tips or the edge edges are processed in a cutting mode to form inclined planes 3 or are continuously polished to form cambered surfaces 2;
fifthly, welding a shear member 4 and/or an anchoring piece 5 on the body;
and when the lifting hole is formed, a lifting hole 6 is formed in the end part of the body before the fourth step. And when the anticorrosive coating is arranged, constructing the anticorrosive coating after the fifth step.
Referring to fig. 7-8, the self-supporting prefabricated component comprises a reinforced concrete column main body 7, and further comprises a prefabricated concrete shearing-resistant connecting piece which is partially embedded at the connecting end of the column main body and is arranged in the middle, taking the prefabricated concrete shearing-resistant connecting piece of the second embodiment as an example, the body 1 is embedded in the middle of the cross section of the column main body 7, the embedded length is not less than 20mm, the exposed length of the exposed column main body 7 is not less than 20mm, and the lifting hole is positioned at the exposed column main body. The column reinforcement cage of the column body 7 includes column stirrups 71 and column longitudinal ribs 72, and the upper and/or lower portions of the column reinforcement cage are exposed at the connection end surfaces of the column body 7.
The self-supporting prefabricated part is shown in fig. 9-10, and comprises a beam main body 8 made of reinforced concrete, and further comprises a prefabricated concrete shearing-resistant connecting piece which is partially embedded in the connecting end of the beam main body and is arranged in the middle, taking the prefabricated concrete shearing-resistant connecting piece of the fifth embodiment as an example, the body 1 is embedded in the middle of the cross section of the beam main body 8 in the middle, the embedded length is not less than 20mm, the exposed length of the exposed beam main body 8 is not less than 20mm, and the hoisting hole is positioned at the part of the exposed beam main body. The beam reinforcement cage of the beam main body 8 comprises beam stirrups 81 and beam longitudinal ribs 82, and the upper part of the beam reinforcement cage is exposed on the upper side surface of the beam main body 8.
The manufacturing method of the two self-supporting prefabricated components comprises the following steps:
step one, processing stirrups, longitudinal ribs and precast concrete shearing-resistant connecting pieces; the stirrups and the longitudinal bars are made into corresponding reinforcement cages;
step two, manufacturing a mould and supporting the mould;
placing the manufactured precast concrete shearing-resistant connecting piece at a preset position of the reinforcement cage and fixedly connecting the precast concrete shearing-resistant connecting piece with the reinforcement cage;
pouring concrete of the prefabricated part;
and fifthly, curing the concrete to the preset strength.
An embodiment of a self-supporting prefabricated component is shown in fig. 11 and 14, and comprises a plate body 9 of a reinforced concrete wall or plate, and further comprises four prefabricated concrete shearing connectors partially embedded at the connecting ends of the plate body, wherein the length of the body 1 embedded into the plate body 9 is not less than 20mm, the length of the exposed plate body 9 is not less than 20mm, and a lifting hole is positioned at the part of the exposed plate body. Two upper side bodies 11 are symmetrically connected at left and right intervals at the upper side end part of the plate body 9. The lower end of the plate body is provided with a lower body 10 corresponding to the upper body 11, the lower body 10 is protruded outwards relative to the lower end surface of the plate body 9, and the connection mode of the lower body 10 and the plate body is the same as that of the upper body 11 and the plate body.
The reinforcing mesh of the plate body 9 comprises plate horizontal stirrups 91 and plate vertical longitudinal ribs 92, the end parts of the plate vertical longitudinal ribs 92 extend out of the upper side and the lower side of the plate body 9 respectively, and the plate horizontal stirrups 91 are located in the plate body 9.
Second embodiment referring to fig. 12 and 14, unlike the first embodiment, the lower end of the plate body has a connection groove 12 corresponding to the upper body 11 and corresponding to the upper and lower sides, and the connection groove 12 is concave with respect to the lower end surface of the plate body 9.
Third embodiment referring to fig. 13 and 14, unlike the first embodiment, the ends of the plate horizontal stirrups 91 protrude from the left and right sides of the plate body 9, respectively.
The manufacturing method of the self-supporting prefabricated part comprises the following steps:
step one, processing a plate horizontal stirrup, a plate vertical longitudinal bar and a precast concrete shearing-resistant connecting piece; the plate horizontal stirrups 91 and the plate vertical longitudinal stirrups 92 are made into corresponding reinforcing mesh sheets;
step two, manufacturing a mould and supporting the mould;
step three, paving a reinforcing mesh on the lower side of the plate body;
fourthly, placing the manufactured precast concrete shearing-resistant connecting piece at a preset position of the upper end part and connecting the precast concrete shearing-resistant connecting piece with the reinforcing steel bar net sheet in the third step,
placing an inner mold of the manufactured connecting groove 12 or a manufactured precast concrete shearing-resistant connecting piece at a preset position of the lower end part of the plate body and connecting the inner mold or the manufactured precast concrete shearing-resistant connecting piece with the reinforcing steel bar net sheet in the third step;
step five, paving a reinforcing mesh on the upper side of the plate body;
step six, arranging tie bars between the upper and lower steel bar meshes;
pouring plate body concrete;
and step eight, curing the concrete to a preset strength.
Claims (10)
1. Precast concrete shear connector, including body (1), its characterized in that: the body is a section of cutting steel piece or welding steel piece, at least one corner point of the end edge of the body is cut into an arc surface (2) or an inclined surface (3), or at least one edge of the end edge of the body is cut into an arc surface (2) or an inclined surface (3),
the surface of the body is fixedly connected with a shear resistant piece (4) or/and an anchoring piece (5);
the shearing resistant member (4) is a bolt, a steel bar, a steel plate or a section steel which is vertical to the side wall surface of the body and fixedly connected with the side wall surface of the body;
the anchoring piece (5) is a steel bar, an anchor bolt, a steel plate or a section steel which is fixedly connected to one end face of the body in the length direction;
the cross section of the body (1) is in a shape of a straight line, an I shape, an H shape, an L shape, a rectangle or a king shape.
2. The precast concrete shear connector of claim 1, wherein: a hoisting hole (6) is formed in the center of one side end part of the body (1).
3. A self-supporting prefabricated component comprising a reinforced concrete column body (7), characterized in that: the precast concrete shear connector is characterized by further comprising at least one precast concrete shear connector according to claim 1 or 2, wherein the precast concrete shear connector is partially embedded at the connecting end of the column main body, the body (1) is embedded in the middle of the cross section of the column main body (7), the embedded length is not less than 20mm, the exposed length of the exposed part of the column main body (7) is not less than 20mm, the column reinforcement cage of the column main body (7) comprises column stirrups (71) and column longitudinal ribs (72), and the upper part and/or the lower part of the column reinforcement cage are exposed on the surface of the connecting end of the column main body (7).
4. A self-supporting prefabricated component comprising a beam body (8) of reinforced concrete, characterized in that: the precast concrete shear connector is characterized by further comprising at least one precast concrete shear connector according to claim 1 or 2, wherein the precast concrete shear connector is partially embedded at the connecting end of the beam main body, the body (1) is embedded in the middle of the cross section of the beam main body (8) in a middle, the embedded length is not less than 20mm, the exposed length of the exposed beam main body (8) is not less than 20mm, the beam reinforcement cage of the beam main body (8) comprises beam stirrups (81) and beam longitudinal ribs (82), and the upper part of the beam reinforcement cage is exposed on the upper side surface of the beam main body (8).
5. A self-supporting prefabricated element comprising a panel body (9) of a reinforced concrete wall or panel, characterized in that: the prefabricated concrete shear connector also comprises at least two prefabricated concrete shear connectors as claimed in claim 1 or 2 which are partially embedded at the connecting end of the plate body, wherein the length of the body (1) embedded into the plate body (9) is not less than 20mm, the length of the exposed plate body (9) is not less than 20mm, the upper end part of the plate body (9) is at least fixedly connected with one upper body (11) in the middle or symmetrically connected with two upper bodies (11) at left and right intervals,
the lower end part of the plate body is provided with a connecting groove (12) which corresponds up and down and is matched with the upper body in size, the connecting groove (12) is concave relative to the lower end surface of the plate body (9),
or the lower end part of the plate body is provided with a lower body (10) corresponding to the upper body (11) from top to bottom, the lower body (10) is outwards protruded relative to the lower end surface of the plate body (9), and the connection mode of the lower body (10) and the plate body is the same as the connection mode of the upper body (11) and the plate body.
6. A self-supporting prefabricated element according to claim 5, wherein: the reinforcing mesh of the plate body (9) comprises a plate horizontal stirrup (91) and a plate vertical longitudinal bar (92), the end parts of the plate vertical longitudinal bar (92) respectively extend out of the upper side and the lower side of the plate body (9), and the plate horizontal stirrup (91) is positioned in the plate body (9) or the end parts thereof respectively extend out of the left side and the right side of the plate body (9).
7. A method of making a precast concrete shear connector according to claim 1 or 2, characterized in that: the preparation method comprises the following steps:
step one, selecting materials: selecting the model and the material of the body;
step two, paying off: paying off according to a design drawing;
step three, cutting: cutting the section steel to form a cut section steel piece, or cutting the steel plate and then welding to form a welded steel member;
and fourthly, arc making or corner cutting: the corner tips or the edge edges are processed in a way of cutting to form inclined planes (3) or continuously polishing to form cambered surfaces (2);
and fifthly, welding the shearing resistant piece (4) and/or the anchoring piece (5) on the body.
8. The method for manufacturing the precast concrete shearing connectors according to claim 7, wherein: and step four, a hoisting hole (6) is formed at the end part of the body before the step two.
9. A method of making a self-supporting prefabricated component according to claim 3 or 4, comprising the steps of:
step one, processing stirrups, longitudinal ribs and precast concrete shearing-resistant connecting pieces; the stirrups and the longitudinal bars are made into corresponding reinforcement cages;
step two, manufacturing a mould and supporting the mould;
placing the manufactured precast concrete shearing-resistant connecting piece at a preset position of the reinforcement cage and fixedly connecting the precast concrete shearing-resistant connecting piece with the reinforcement cage;
pouring concrete of the prefabricated part;
and fifthly, curing the concrete to the preset strength.
10. A method of making a self-supporting prefabricated component according to claim 6, comprising the steps of:
step one, processing a plate horizontal stirrup, a plate vertical longitudinal bar and a precast concrete shearing-resistant connecting piece; the plate horizontal stirrups (91) and the plate vertical longitudinal stirrups (92) are made into corresponding reinforcing steel meshes;
step two, manufacturing a mould and supporting the mould;
step three, paving a reinforcing mesh on the lower side of the plate body;
fourthly, placing the manufactured precast concrete shearing-resistant connecting piece at a preset position of the upper end part and connecting the precast concrete shearing-resistant connecting piece with the reinforcing steel bar net sheet in the third step,
placing an inner die of the manufactured connecting groove (12) or a manufactured precast concrete shearing-resistant connecting piece at a preset position of the lower end part of the plate body, and connecting the inner die with the reinforced mesh in the third step;
step five, paving a reinforcing mesh on the upper side of the plate body;
step six, arranging tie bars between the upper and lower steel bar meshes;
pouring plate body concrete;
and step eight, curing the concrete to a preset strength.
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