CN111335464A - Fabricated concrete structure beam column connecting node and construction method thereof - Google Patents
Fabricated concrete structure beam column connecting node and construction method thereof Download PDFInfo
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- CN111335464A CN111335464A CN202010271860.4A CN202010271860A CN111335464A CN 111335464 A CN111335464 A CN 111335464A CN 202010271860 A CN202010271860 A CN 202010271860A CN 111335464 A CN111335464 A CN 111335464A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
Abstract
The invention discloses a beam-column connection node of an assembled concrete structure and a construction method thereof.A grid flashboard connection mode is adopted, equidistant grid steel plates are respectively welded at the beam-column node parts, and a mutual penetration and bolt connection mode is adopted, so that the problems that a large number of steel bars are arranged at the connection parts, and the concrete pouring construction is difficult can be avoided; meanwhile, all components including the joints are prefabricated in a factory, the quality is easy to guarantee, and the joints are connected through splicing and bolt connection, so that the construction is convenient.
Description
Technical Field
The invention relates to the field of beam-column connecting nodes, in particular to a beam-column connecting node of an assembled concrete structure and a construction method thereof.
Background
The prefabricated concrete structure is a novel building production mode which realizes sustainable development of energy conservation, environmental protection and full life cycle value maximization of building products.
China is one of the most serious countries in the world, and therefore faces a serious threat of earthquake disasters. The investigation of earthquake damage of major earthquakes at home and abroad shows that: the destruction of the precast concrete frame structure is mainly manifested as the destruction of the connection between the respective members, and the resultant overall structural dispersion and collapse. Therefore, the connection among the prefabricated components is the research focus in the anti-seismic performance of the prefabricated concrete structure system, and is the premise and the foundation of the whole anti-seismic performance research of the structure.
The prior relevant technical regulations in China all adopt a post-pouring integral connection mode. The post-cast integral assembly structure follows the design principle of "cast-in-place is equallyd, and roof beam and post are prefabricated respectively, and node core area is cast-in-place, in order to satisfy the antidetonation designing requirement of" strong node ", pour the position (node core area) at the node secondary and can arrange a large amount of reinforcing bars, lead to the reinforcement difficulty, and the work procedure is complicated for the work progress, and the efficiency of construction is low, and node concrete placement is difficult closely knit.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a beam-column connection node of an assembled concrete structure and a construction method thereof, wherein a grid inserting plate connection mode is adopted, equidistant grid steel plates are respectively welded at the beam-column joint part, and a mutual inserting and bolt connection mode is adopted, so that the problems that a large number of steel bars are arranged at the connection part, and the concrete pouring construction is difficult can be avoided; meanwhile, all components including the joints are prefabricated in a factory, the quality is easy to guarantee, and the joints are connected through splicing and bolt connection, so that the construction is convenient.
The purpose of the invention is realized by the following technical scheme: the utility model provides an assembled beam column connected node, this node includes first pre-buried steel sheet, the pre-buried steel sheet of second, the pre-buried steel sheet of third, the pre-buried steel sheet of fourth, first anchor reinforcing bar, second anchor reinforcing bar, third anchor reinforcing bar, fourth anchor reinforcing bar, post grid picture peg, beam grid steel sheet, bolt hole.
The upper side of the assembly type beam-column connecting node is an upper column, the lower side of the assembly type beam-column connecting node is a lower column, the left side of the assembly type beam-column connecting node is a left beam, and the right side of the assembly type beam-column connecting node is a right beam; the first embedded anchoring steel bar is welded on the first embedded steel plate, fixed on the upper column and integrally cast in concrete with the upper column to form a prefabricated upper column body; and the second anchoring reinforcing steel bar is welded on the second embedded steel plate, is fixed on the lower column, and is integrally cast in concrete together with the lower column to form a prefabricated lower column body. The third anchoring steel bar is welded on the third embedded steel plate, fixed on the left beam and integrally cast with the left beam in concrete; the fourth anchoring steel bar is welded on the fourth embedded steel plate, fixed on the right beam and integrally cast in concrete with the right beam;
the beam grille steel plate is a group of steel plates which are arranged at equal intervals, the left end of each steel plate is welded on the third embedded steel plate, and the right end of each steel plate is welded on the fourth embedded steel plate.
The column grating inserting plate is divided into an upper column grating inserting plate and a lower column grating inserting plate, the upper column grating inserting plate is a group of steel plates which are arranged at equal intervals, each steel plate is welded on the first embedded steel plate, the lower column grating inserting plate is a group of steel plates which are arranged at equal intervals, and each steel plate is welded on the second embedded steel plate;
the column grating steel inserting plate and the beam grating steel plate are both provided with bolt holes, and the bolt holes between the column grating steel inserting plate and the beam grating steel plate are matched with each other; the beam grating inserting plate is inserted between the upper column grating inserting plate and the lower column grating inserting plate of the column grating inserting plate and is connected through bolt holes by bolts.
Further, the bolt holes in the column grating steel inserting plates and the beam grating steel plates are arranged in rows and columns, the number of the bolt holes is adjusted according to the cross-sectional size of the beam and the column grating inserting plates and the size of the beam grating steel plates, and the aperture is determined according to the thicknesses of the column grating steel inserting plates and the beam grating steel plates.
Furthermore, the thicknesses of the upper column grating insertion plate and the lower column grating insertion plate of the column grating insertion plate are calculated according to the bending moment, the shearing force and the axial force applied to the beam-column joint.
Furthermore, the arrangement distance of the beam grating steel plates is matched with the thickness of the steel plates of the upper column grating inserting plate and the lower column grating inserting plate in the column grating inserting plates, and the thickness of the steel plates of the upper column grating inserting plate and the lower column grating inserting plate is determined according to stress calculation.
Furthermore, the thickness of the first embedded steel plate and the second embedded steel plate of the column is matched with that of the column grating plugboard, the length and the width are matched with the sectional dimension of the column, and the thickness of a concrete protective layer of the column required by the concrete structure design standard is reduced on the basis of the sectional dimension of the column. The first embedded steel plate and the second embedded steel plate can be simultaneously used as anchoring steel plates of upper column stressed steel bars and lower column stressed steel bars at the joint of the beam column, so that the column stressed steel bars meet anchoring requirements.
Furthermore, the thickness of the third embedded steel plate and the fourth embedded steel plate is matched with that of the beam grid steel plate, and the bending moment, the shearing force and the axial force of the left beam and the right beam at the beam column joint are transmitted to the beam grid steel plate through the anchoring steel bars and the anchoring steel bars.
A construction method of an assembly type beam-column connecting joint comprises the following construction steps:
the method comprises the following steps: and processing and manufacturing each steel plate of each inserting plate in the column grating inserting plate and each steel plate of the beam grating steel plate in a factory, and forming bolt holes in the inserting plates and the steel plates.
Step two: weld the last post grid picture peg of post grid picture peg in first pre-buried steel sheet in the mill, first anchor reinforcing bar also welds in first pre-buried steel sheet, the two welds respectively in first pre-buried steel sheet both sides, it is fixed with the steel reinforcement cage of last post to weld one side of first anchor reinforcing bar, then first anchor reinforcing bar, first pre-buried steel sheet and last post steel reinforcement cage monolithic concreting, the component of pouring is maintained as required until the concrete reaches design strength, accomplish and prefabricate the upper prop body.
Step three: welding a lower column grating inserting plate in the column grating inserting plate with a second embedded steel plate, welding second anchoring reinforcing steel bars on the second embedded steel plate, welding the second anchoring reinforcing steel bars and the second embedded steel plate on two sides respectively, fixing the second embedded steel plate welded with one side of the second anchoring reinforcing steel bars with a lower column reinforcing cage, integrally pouring concrete on the second anchoring reinforcing steel bars, the second embedded steel plate and the lower column reinforcing cage, and curing the components after pouring the concrete according to the standard requirement until the concrete reaches the design strength to finish prefabricating a lower column body.
Step four: welding the left side of each steel plate of the beam grid inserting plate to the right side of a third embedded steel plate in a factory, welding the left side of each steel plate with a fourth embedded steel plate, welding a fourth embedded steel bar on the other side of the third embedded steel plate, and welding a fifth embedded steel bar on the other side of the fourth embedded steel plate; fixing the third embedded steel plate welded with one side of the fourth embedded steel bar with the left beam reinforcement cage, and fixing the fourth embedded steel plate welded with one side of the fifth embedded steel bar with the right beam reinforcement cage; manufacturing templates for the left beam reinforcement cage, the fourth embedded reinforcement and the third embedded steel plate, and pouring concrete; manufacturing templates for the right beam reinforcement cage, the fifth embedded reinforcement and the fourth embedded steel plate, and pouring concrete; and curing the two poured concrete members until the concrete reaches the designed strength, and finishing the precast beam.
Step five: transporting the manufactured part to a construction site, inserting the column grating inserting plate between the beam grating steel plates, penetrating bolts into the bolt holes, screwing nuts, and fixing the column grating inserting plate and the beam grating steel plates through the bolts;
step five: some stirrups can be added properly in the node area of the installed beam column according to the size of the column;
step six: and pouring concrete in the node area of the installed beam column, and curing.
Compared with the prior art, the invention has the beneficial effects that:
1. compared with a cast-in-place integral beam column node, the invention avoids the problems of large reinforcement quantity, complex structure, difficult concrete pouring, high construction precision requirement, complex process and the like in a node area.
2. The key parts of the beam column joint are prefabricated in a factory, the quality can be ensured, the joint can be transported to the site only by bolt connection and concrete pouring, the concrete only plays a role of a protective layer and does not serve as a force transmission part, so that the requirements on pouring quality and the like are not high, the construction is simple and easy, and other modes can be adopted as the protective layer.
3. The beam grating steel plate is continuously arranged in the middle of the beam grating steel plate, the bending moment can be effectively transmitted in a continuous mode, the column grating steel plate is in a lap joint mode, is tightly attached to the beam grating steel plate, and is in a bolt connection mode, so that the force transmission effect of a node part can be ensured.
4. The deformation capability, the energy consumption capability and the ductility of the grid steel plate are better than those of concrete, so that the seismic performance of the node is stronger than that of an integrally cast node.
Drawings
FIG. 1 is a plan elevation view of an assembled beam-column connection node;
FIG. 2 is a cross-sectional view of an assembled beam-column connection node 1-1;
FIG. 3 is a cross-sectional view of an assembled beam-column connection node 2-2;
FIG. 4 is a plan elevation view of the post;
FIG. 5 is a plan side view of the post;
FIG. 6 is a plan elevation view of the beam;
figure 7 is a top plan view of the beam.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in fig. 1, the assembled beam-column connection node provided by the invention comprises a first embedded steel plate 1, a second embedded steel plate 2, a third embedded steel plate 3, a fourth embedded steel plate 4, a first anchoring steel bar 5, a second anchoring steel bar 6, a third anchoring steel bar 7, a fourth anchoring steel bar 8, a column grid inserting plate 9, a beam grid steel plate 10 and a bolt hole 11.
As shown in fig. 2 and 3, the upper side of the fabricated beam-column connection node is an upper column, the lower side thereof is a lower column, the left side thereof is a left beam, and the right side thereof is a right beam; the first embedded anchoring steel bar 5 is welded on the first embedded steel plate 1, is manufactured with the steel reinforcement cage of the upper column at the same time, is fixed on the steel reinforcement cage of the upper column, and is integrally cast in concrete with the upper column to form a prefabricated upper column body. And the second anchoring steel bars 6 are welded on the second embedded steel plates 2, are simultaneously manufactured with the steel reinforcement cage of the lower column, are fixed on the steel reinforcement cage of the lower column, and are integrally cast in concrete with the lower column to form a prefabricated lower column body. The third anchoring steel bar 7 is welded on the third embedded steel plate 3, is manufactured with the steel reinforcement cage of the left beam at the same time, is fixed on the steel reinforcement cage of the left beam, and is integrally cast in concrete with the left beam; the fourth anchoring steel bar 8 is welded on the fourth embedded steel plate 4, is manufactured with the steel reinforcement cage of the right beam at the same time, is fixed on the steel reinforcement cage of the right beam, and is integrally cast in concrete with the right beam; as shown in fig. 6 and 7, the beam grid steel plate 10 is a set of steel plates arranged at equal intervals, the left end of each steel plate is welded to the third pre-buried steel plate 3 by the fillet weld and the partial cut weld, and the right end of each steel plate is welded to the fourth pre-buried steel plate 4 by the fillet weld and the partial cut weld.
As shown in fig. 4 and 5, the pillar grid insert plate 9 is divided into an upper pillar grid insert plate and a lower pillar grid insert plate, the upper pillar grid insert plate is a group of steel plates arranged at equal intervals, each steel plate is welded on the first embedded steel plate 1 through a fillet weld and a partial-section weld, the lower pillar grid insert plate is a group of steel plates arranged at equal intervals, each steel plate is welded on the second embedded steel plate 2 through a fillet weld and a partial-section weld;
the column grating steel inserting plates 9 and the beam grating steel plates 10 are both provided with bolt holes 11, and the bolt holes 11 between the column grating steel inserting plates 9 and the beam grating steel plates 10 are matched with each other; the beam grid insert plate 10 is inserted between the upper and lower column grid insert plates of the column grid insert plate 9 and is connected by bolts through bolt holes 11.
The bolt holes 11 on the column grating steel inserting plates 9 and the beam grating steel plates 10 are arranged in rows and columns, the minimum is 2 rows and 2 columns, the space and the aperture meet the requirements of relevant specifications, the number of the bolt holes is adjusted according to the section size of a beam column and the sizes of the column grating inserting plates 9 and the beam grating steel plates 10, and the aperture is determined according to the thicknesses of the column grating steel inserting plates 9 and the beam grating steel plates 10.
The thickness of the upper column grating inserting plate and the lower column grating inserting plate of the column grating inserting plate 9 is calculated according to the bending moment, the shearing force and the axial force borne by the beam-column node.
The arrangement distance of the beam grating steel plates 10 is matched with the thickness of the steel plates of the upper column grating inserting plate and the lower column grating inserting plate in the column grating inserting plate 9, the column grating inserting plate 9 is ensured to be inserted into the beam grating rigid plate 10, and the thickness of the steel plates of the upper column grating inserting plate and the lower column grating inserting plate is determined according to stress calculation.
The first embedded steel plate 1 and the second embedded steel plate 2 of the column form an integral component with the column through the first anchoring steel bar 5 and the second anchoring steel bar 6, the thickness of the integral component is matched with the column grating inserting plate 9 due to welding, the length and the width of the integral component are matched with the cross section size of the column, and the thickness of a concrete protective layer of the column required by concrete structure design specifications is reduced on the basis of the cross section size of the column. The first embedded steel plate 1 and the second embedded steel plate 2 can be simultaneously used as anchoring steel plates of upper columns and lower columns of stressed steel bars at the positions of beam column nodes, so that the column stressed steel bars meet anchoring requirements.
The thickness of the third embedded steel plate 3 and the fourth embedded steel plate 4 is matched with that of the beam grid steel plate 10 due to the fact that welding is needed, an integral component is formed by the anchoring steel bars 7 and the anchoring steel bars 8 and the beam, and bending moment, shearing force and axial force of the left beam and the right beam at the beam column node are transmitted to the beam grid steel plate 10 through the anchoring steel bars 7 and the anchoring steel bars 8.
A construction method of an assembly type beam-column connecting joint comprises the following construction steps:
the method comprises the following steps: each steel plate of each insert plate in the column grid insert plate 9 and each steel plate of the beam grid steel plate 10 are processed and manufactured in a factory, and bolt holes are formed in the insert plates and the steel plates.
Step two: weld the last post grid picture peg of post grid picture peg 9 in first pre-buried steel sheet 1 in the mill, first anchor reinforcing bar 5 also welds in first pre-buried steel sheet 1, the two welds respectively in first pre-buried steel sheet both sides, it is fixed with the steel reinforcement cage of last post to weld one side of first anchor reinforcing bar 5, then first anchor reinforcing bar 5, first pre-buried steel sheet 1 and last post steel reinforcement cage monolithic concreting, the component of pouring is maintained as required until the concrete reaches design strength, accomplish and prefabricate the cylinder.
Step three: welding the lower column grating insert plate in the column grating insert plate 9 with the second embedded steel plate 2, welding the second anchoring reinforcing steel bars 6 on the second embedded steel plate 2, welding the second anchoring reinforcing steel bars and the second embedded steel plate 2 on two sides respectively, fixing the second embedded steel plate 2 welded with one side of the second anchoring reinforcing steel bars 6 with the lower column reinforcing steel cage, integrally pouring concrete on the second anchoring reinforcing steel bars 6, the second embedded steel plate 2 and the lower column reinforcing steel cage, and maintaining the components after pouring concrete according to the standard requirement until the concrete reaches the design strength to finish prefabricating the lower column body.
Step four: welding the left side of each steel plate of the beam grid inserting plate 10 to the right side of a third embedded steel plate 3 and welding the left side of each steel plate with a fourth embedded steel plate 4 in a factory, welding a fourth embedded steel bar 7 on the other side of the third embedded steel plate 3, and welding a fifth embedded steel bar 8 on the other side of the fourth embedded steel plate 4; fixing the third embedded steel plate 3 welded with one side of the fourth embedded steel bar 7 with the left beam reinforcement cage, and fixing the fourth embedded steel plate 4 welded with one side of the fifth embedded steel bar 8 with the right beam reinforcement cage; manufacturing templates for the left beam reinforcement cage, the fourth embedded steel bars 7 and the third embedded steel plates 3, and pouring concrete; manufacturing templates for the right beam reinforcement cage, the fifth embedded reinforcement 8 and the fourth embedded steel plate 4, and pouring concrete; and curing the two poured concrete members until the concrete reaches the designed strength, and finishing the precast beam.
Step five: transporting the manufactured part to a construction site, inserting the column grating insert plate 9 between the beam grating steel plates 10, penetrating bolts into the bolt holes 11, screwing nuts, and fixing the column grating insert plate 9 and the beam grating steel plates 10 through the bolts;
step five: some stirrups can be added properly in the node area of the installed beam column according to the size of the column;
step six: and pouring concrete in the node area of the installed beam column, and curing.
The application process of the invention is as follows: firstly, an architect carries out building design of an assembled concrete structure according to the requirements of an owner, then a structural engineer carries out layout design and load calculation of a frame structure according to the requirements of building functions, carries out internal force calculation and load combination of the frame structure according to loads and working conditions, completes the section reinforcement design of a beam column on the basis, calculates the thickness and the number of steel plates in a required beam grating steel plate 10 and a required column grating inserting plate 9 according to the internal force borne by a node, considers some regulations of relevant construction requirements of relevant regulations such as concrete structure design regulations and building earthquake-resistant design regulations, comprehensively calculates and standardizes the construction requirements, gives the number and the thickness of the steel plates in the beam grating steel plate 10 and the column grating inserting plate 9, and carries out weld joint design and bolt design according to the steel structure design regulations; and calculating the thicknesses of the first embedded steel plate 1, the second embedded steel plate 2, the third embedded steel plate 3 and the fourth embedded steel plate 4 according to concrete structure design specifications, and calculating the steel bar diameters and the anchoring lengths of the first anchoring steel bar 5, the second anchoring steel bar 6, the third anchoring steel bar 7 and the fourth anchoring steel bar 8. And (4) completely calculating the node areas of the beams, the columns and the beams and the columns, and drawing a construction drawing by a structural engineer.
According to the structural construction drawing, a construction enterprise processes and manufactures each steel plate of each insert plate in the column grid insert plate 9 and each steel plate of the beam grid steel plate 10 in a factory, and bolt holes are formed in the insert plates and the steel plates.
Weld every picture peg with post grid picture peg 9 in the mill in first pre-buried steel sheet 1, first anchor reinforcing bar 5 also welds in first pre-buried steel sheet 1, the two welds respectively in first pre-buried steel sheet both sides, it is fixed with the steel reinforcement cage of upper prop to weld one side of first anchor reinforcing bar 5, then first anchor reinforcing bar 5, first pre-buried steel sheet 1 and upper prop steel reinforcement cage monolithic concreting, the component of pouring is maintained as required until the concrete reaches design strength, just so accomplished the preparation of prefabricating the upper prop.
Every steel sheet welding and the pre-buried steel sheet of second 2 in the post grid picture peg 9, second anchor reinforcing bar 6 also welds on the pre-buried steel sheet of second 2, the two welds respectively with the pre-buried steel sheet of second 2 both sides, then it is fixed with lower post reinforcing bar cage to weld the pre-buried steel sheet of second 2 that have second anchor reinforcing bar 6 one side, then second anchor reinforcing bar 6, the pre-buried steel sheet of second 2 and lower post reinforcing bar cage monolithic concreting, the component after the concreting is required the maintenance according to the standard and is reached design strength until the concrete, accomplish the preparation of prefabricating the lower post.
Welding the left side of each steel plate of the beam grid inserting plate 10 to a third embedded steel plate 3, welding the right side of each steel plate to a fourth embedded steel plate 4, welding a fourth embedded steel bar 7 on the other side of the third embedded steel plate 3, and welding a fifth embedded steel bar 8 on the other side of the fourth embedded steel plate 4 in a factory; fixing the third embedded steel plate 3 welded with one side of the fourth embedded steel bar 7 with the left beam reinforcement cage, and fixing the fourth embedded steel plate 4 welded with one side of the fifth embedded steel bar 8 with the right beam reinforcement cage; manufacturing templates for the left beam reinforcement cage, the fourth embedded steel bars 7 and the third embedded steel plates 3, and pouring concrete; manufacturing templates for the right beam reinforcement cage, the fifth embedded reinforcement 8 and the fourth embedded steel plate 4, and pouring concrete; and curing the two poured concrete members until the concrete reaches the designed strength, and finishing the manufacturing of the precast beam.
Transporting the manufactured beams and columns to a construction site, firstly hoisting and positioning bottom layer columns, hoisting the beams, inserting the second layer columns between beam grating steel plates 10 at corresponding positions of the first layer through grating insertion plates 9 after the first layer beams and columns are installed in position, penetrating bolts into bolt holes 11, screwing nuts, and fixing the column grating insertion plates 9 and the beam grating steel plates 10 through the bolts; then, mounting layer by layer, and after all mounting is finished, properly adding some stirrups in the beam-column joint area according to the size of the column; and finally, pouring concrete in the installed beam-column joint area, and maintaining.
The fabricated beam-column joint has the advantages that each component of the concrete structure is manufactured in a factory, the construction quality is easy to guarantee, the fabricated beam-column joint is not influenced by weather conditions, a scaffold is not needed in the installation process, the construction cost is saved, only a small amount of concrete pouring wet operation is performed on the site, and the environmental pollution is small.
The above examples are a preferred embodiment of the present invention, and are further illustrative of the present invention and its applications, and should not be construed as limited to the above examples. Any technique that can be implemented based on the principles and inventive content of the present invention falls within the scope of the present invention.
Claims (7)
1. The utility model provides an assembled concrete structure beam column connected node, its characterized in that, this node includes first pre-buried steel sheet (1), the pre-buried steel sheet of second (2), the pre-buried steel sheet of third (3), the pre-buried steel sheet of fourth (4), first anchor reinforcing bar (5), second anchor reinforcing bar (6), third anchor reinforcing bar (7), fourth anchor reinforcing bar (8), post grid picture peg (9), beam grid steel sheet (10), bolt hole (11).
The upper side of the assembly type beam-column connecting node is an upper column, the lower side of the assembly type beam-column connecting node is a lower column, the left side of the assembly type beam-column connecting node is a left beam, and the right side of the assembly type beam-column connecting node is a right beam; the first embedded anchoring steel bar (5) is welded on the first embedded steel plate (1), fixed on the upper column and integrally cast in concrete with the upper column to form a prefabricated upper column body; and the second anchoring reinforcing steel bar (6) is welded on the second embedded steel plate (2), is fixed on the lower column and is integrally cast in concrete together with the lower column to form a prefabricated lower column body. The third anchoring steel bar (7) is welded on the third embedded steel plate (3), is fixed on the left beam and is integrally cast in concrete together with the left beam; the fourth anchoring steel bar (8) is welded on the fourth embedded steel plate (4), is fixed on the right beam and is integrally cast in concrete together with the right beam;
the beam grille steel plate (10) is a group of steel plates which are arranged at equal intervals, the left end of each steel plate is welded on the third embedded steel plate (3), and the right end of each steel plate is welded on the fourth embedded steel plate (4).
The column grating inserting plate (9) is divided into an upper column grating inserting plate and a lower column grating inserting plate, the upper column grating inserting plate is a group of steel plates which are arranged at equal intervals, each steel plate is welded on the first embedded steel plate (1), the lower column grating inserting plate is a group of steel plates which are arranged at equal intervals, and each steel plate is welded on the second embedded steel plate (2);
bolt holes 11 are formed in the column grating steel inserting plate (9) and the beam grating steel plate (10), and the bolt holes 11 between the column grating steel inserting plate (9) and the beam grating steel plate (10) are matched with each other; the beam grid inserting plate (10) is inserted between an upper column grid inserting plate and a lower column grid inserting plate of the column grid inserting plate (9) and is connected through a bolt hole (11) by a bolt.
2. A fabricated concrete structure beam-column connection node according to claim 1, wherein the bolt holes 11 of the column grating steel inserting plate (9) and the beam grating steel plate (10) are arranged in rows and columns, the number of the bolt holes is adjusted according to the sectional size of the beam column and the size of the column grating inserting plate (9) and the beam grating steel plate (10), and the hole diameter is determined according to the thickness of the column grating steel inserting plate (9) and the beam grating steel plate (10).
3. The fabricated concrete structure beam-column connection node as claimed in claim 1, wherein the thickness of the upper and lower column grid insert plates of the column grid insert plate (9) is calculated according to the bending moment, shearing force and axial force applied to the beam-column node.
4. The beam-column connection node of an assembled concrete structure according to claim 1, wherein the arrangement pitch of the beam grating steel plates (10) is matched with the thickness of the steel plates of the upper and lower column grating insert plates in the column grating insert plate (9), and the thickness of the steel plates of the upper and lower column grating insert plates is determined according to force calculation.
5. The beam-column connection node of the prefabricated concrete structure as claimed in claim 1, wherein the thickness of the first embedded steel plate (1) and the second embedded steel plate (2) of the column is matched with the column grating insertion plate (9), the length and the width are matched with the cross-sectional dimension of the column, and the thickness of a concrete protection layer of the column required by the concrete structure design specification is reduced on the basis of the cross-sectional dimension of the column. The first embedded steel plate (1) and the second embedded steel plate (2) can be simultaneously used as anchoring steel plates of upper columns and lower columns of stressed steel bars at beam column joints, so that the column stressed steel bars meet anchoring requirements.
6. The beam-column connection node of the prefabricated concrete structure as claimed in claim 1, wherein the thickness of the third pre-buried steel plate (3) and the fourth pre-buried steel plate (4) is matched with that of the beam-grid steel plate (10), and the bending moment, the shearing force and the axial force of the left beam and the right beam at the beam-column node are transmitted to the beam-grid steel plate (10) through the anchoring steel bars (7) and the anchoring steel bars (8).
7. The construction method of a beam-column connection node of a fabricated concrete structure according to any one of claims 1 to 6, wherein the construction steps are as follows:
the method comprises the following steps: and processing and manufacturing each steel plate of each inserting plate in the column grating inserting plate (9) and each steel plate of the beam grating steel plate (10) in a factory, and forming bolt holes on the inserting plates and the steel plates.
Step two: weld the last post grid picture peg of post grid picture peg (9) in first pre-buried steel sheet (1) in the mill, first anchor reinforcing bar (5) also weld in first pre-buried steel sheet (1), the two welds respectively in first pre-buried steel sheet both sides, it is fixed with the steel reinforcement cage of last post to weld one side that has first anchor reinforcing bar (5), then first anchor reinforcing bar (5), first pre-buried steel sheet (1) and last post steel reinforcement cage monolithic concreting, the component of pouring is maintained as required until the concrete reaches design strength, accomplish the prefabricated cylinder of going up.
Step three: with lower post grid picture peg welding and the pre-buried steel sheet of second (2) in post grid picture peg (9), second anchor reinforcing bar (6) also welds on pre-buried steel sheet of second (2), the two welds respectively with pre-buried steel sheet of second (2) both sides, then it is fixed with lower post reinforcing bar cage to weld pre-buried steel sheet of second (2) that have second anchor reinforcing bar (6) one side, then second anchor reinforcing bar (6), pre-buried steel sheet of second (2) and lower post reinforcing bar cage monolithic concreting, the component after the concreting is required the maintenance according to the standard and is reached design strength until the concrete, accomplish the cylinder under the prefabrication.
Step four: welding the left side of each steel plate of the beam grid inserting plate (10) to the right side of a third embedded steel plate (3) in a factory, welding the left side of each steel plate with a fourth embedded steel plate (4), welding a fourth embedded steel bar (7) on the other side of the third embedded steel plate (3), and welding a fifth embedded steel bar (8) on the other side of the fourth embedded steel plate (4); fixing a third embedded steel plate (3) welded with one side of a fourth embedded steel bar (7) with the left beam steel reinforcement cage, and fixing a fourth embedded steel plate (4) welded with one side of a fifth embedded steel bar (8) with the right beam steel reinforcement cage; manufacturing templates for the left beam reinforcement cage, the fourth embedded reinforcement (7) and the third embedded steel plate (3), and pouring concrete; manufacturing templates for the right beam reinforcement cage, the fifth embedded reinforcement (8) and the fourth embedded steel plate (4), and pouring concrete; and curing the two poured concrete members until the concrete reaches the designed strength, and finishing the precast beam.
Step five: transporting the manufactured parts to a construction site, inserting the column grating inserting plate (9) between the beam grating steel plates (10), penetrating bolts in the bolt holes (11), screwing nuts, and fixing the column grating inserting plate (9) and the beam grating steel plates (10) through the bolts;
step five: some stirrups can be added properly in the node area of the installed beam column according to the size of the column;
step six: and pouring concrete in the node area of the installed beam column, and curing.
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| CN202010271860.4A CN111335464A (en) | 2020-04-08 | 2020-04-08 | Fabricated concrete structure beam column connecting node and construction method thereof |
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| CN202010271860.4A CN111335464A (en) | 2020-04-08 | 2020-04-08 | Fabricated concrete structure beam column connecting node and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609840A (en) * | 2020-12-18 | 2021-04-06 | 中冶建筑研究总院有限公司 | Connecting joint suitable for assembled reinforced concrete member and construction method |
| CN113175259A (en) * | 2021-05-06 | 2021-07-27 | 西南交通大学 | Multidirectional connection steel beam column joint based on dry connection |
-
2020
- 2020-04-08 CN CN202010271860.4A patent/CN111335464A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112609840A (en) * | 2020-12-18 | 2021-04-06 | 中冶建筑研究总院有限公司 | Connecting joint suitable for assembled reinforced concrete member and construction method |
| CN113175259A (en) * | 2021-05-06 | 2021-07-27 | 西南交通大学 | Multidirectional connection steel beam column joint based on dry connection |
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