AU2020101918A4 - Fabricated beam-to-column joint and construction method - Google Patents
Fabricated beam-to-column joint and construction method Download PDFInfo
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- AU2020101918A4 AU2020101918A4 AU2020101918A AU2020101918A AU2020101918A4 AU 2020101918 A4 AU2020101918 A4 AU 2020101918A4 AU 2020101918 A AU2020101918 A AU 2020101918A AU 2020101918 A AU2020101918 A AU 2020101918A AU 2020101918 A4 AU2020101918 A4 AU 2020101918A4
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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
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The disclosure relates to a fabricated beam-to-column joint including a column and a
beam, wherein the column includes longitudinal ribs, stirrups and an embedded part;
the beam includes longitudinal ribs, stirrups and embedded H-section steel; when site
construction, the end surface of the embedded part of the column is welded with a
beam-to-column joint steel plate, and the beam is externally connected with the end
surface of the embedded part of the column through the end surface of the embedded
H-section steel and bolted with the beam-to-column joint steel plate. The disclosure
provides a construction method of a fabricated beam-to-column joint. The fabricated
beam-to-column joint provided by the disclosure is easy to construct, excellent in
stress performance ofjoints and strong in rigidity. The disclosure solves the technical
problem that the beam-to-column joint in a fabricated concrete frame structure is
difficult to connect.
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FIG. 1
1
Description
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2-1 2
FIG. 1
AUSTRALIA Patents Act 1990
The following statement is a full description of this invention, including the best method of performing it known to me:
[0001] The disclosure belongs to the technical field of building structures, relates to a fabricated beam-to-column joint, and particularly to a fabricated beam-to-column joint and a construction method.
[0002] With the rapid development of our country's economy, people's living standard is constantly promoted and requirements on residence is increasingly improved. Meanwhile, the cast-in-place construction mode of residence is not compatible with the concept of sustainable development in China. At present, it is urgent to solve the problems of high energy consumption, high pollution and high investment in residential construction in China. Therefore, the Ministry of housing and urban rural development of China's development and Reform Commission has issued the "green building action plan", which clearly mentions that building systems suitable for industrial production, such as prefabricated concrete structures and steel structures, are promoted, the development of prefabrication and assembly technology of construction projects is sped up, and the integration level of construction industrialization technologies is improved.
[0003] The prefabricated concrete structure has the following advantages:
[0004] (1) Green construction. Fabricated concrete structure construction can meet the requirements of green construction, such as land saving, energy saving, material saving, water saving and environmental protection, and reduce the negative influences on the environment, including reducing noise, preventing dust, reducing environmental pollution, clean transportation, reducing site interference, saving water, electricity, materials and other resources and energy, and following the principle of sustainable development.
[0005] (2) Short construction period. As a large number of fabricated concrete members are produced and maintained in the factory, the work carried out on the construction site is only to perform hoisting, assembling and joint reinforcement on the prefabricated members in the prefabrication plant, which not only does not need to mount scaffolding and support, but also reduces the influence of seasonal factors on the construction period. Decoration, hydropower construction and other works are performed after the main structure is formed, the workload is far less than that of the cast-in-place construction, even masonry and plastering processes are omitted, and thus greatly shortening the overall construction period.
[0006] (3) Good member quality. The concrete in the prefabrication plant does not need to be pumped, water in the concrete is little in content, and the concrete strength grade is higher than that cast in site. After the members are poured in the prefabrication plant, steam curing is carried out on the members to ensure the quality of concrete. However, curing of concrete on the construction site not only cannot provide excellent conditions of steam curing but also is affected by weather, so the curing quality can not be comparative with that of the prefabrication plant.
[0007] At present, most of the joints are mainly located in a beam-column joint area. The configuration form of the joint core area include a fabricated joint with keyways, a fabricated joint without keyways using U-shaped reinforcement ribs or steel strands, and a fabricated joint with internal section steel. The dry connection form of fabricated concrete frame joint refers to a joint connection form where connection parts are embedded in the member without pouring concrete and connected through pre-stress ribs, bolts, welding or other manners. The configuration forms of the joint core area include a fabricated joint with pre-stress connection, a fabricated joint with welded connection and a fabricated joint with bolted connection.
[0008] The existing connection forms often have dense reinforcements in the core area, and the concrete in the core area is not dense during construction, thereby affecting the construction quality of fabricated joints. Moreover, the joint of fabricated joints is usually located at the junction of beams and columns. The failure of joints leads to the damage and failure of fabricated reinforced concrete frame structure, which is common in earthquake. Whether the configuration of the joint core area is reasonable and whether the load transfer path is simple and effective also have become important factors affecting the bearing capacity of the fabricated frame concrete structure.
[0009] Through retrieval, the following patent documents related to the present application are found, specifically disclosing the following contents:
[0010] 1. A fabricated joint (CN209874054U) for a building structure includes a lower connection member, a square steel pipe pile and an H-section steel beam. The square steel pipe pile is connected with the H-section steel beam through the lower connection member. The H-section steel beam is mainly composed of mutually parallel two cover plates and a web vertically connected between the cover plates. The end of the web plate close to the lower connection member is connected with two groups of insertion plates perpendicular to the web (4), horizontally arranged two first slots and longitudinally arranged two second slots are formed on the lower connection member, the cover plate is inserted into the first slot, and the insertion plate is inserted into the second slot. In the solution, the H-section steel and the square steel tube are connected through the connection member, the force transmission path is complex and the integrity is poor.
[0011] 2. An H-section beam-to-column fabricated joint (CN209457144U) for unequal span frames comprises a H-section steel column, a long-span H-section steel beam and a short-span H-section steel beam. The end of the long-span H-section steel beam is fixed on the upper flange of the H-section steel column. The upper flange of the short-span H-section steel beam is connected with one side of the first angle steel through the first bolt, and the other side of the first angle steel is connected with the lower flange of the H-section steel column through the first bolt. The web of the short-span H-section steel is connected with one side of the second angle steel through the third bolt, the other side of the second angle steel is connected with the lower flange of the H-section steel column through the fourth bolt, the lower flange of the short-span H-section steel is connected with one side of the third angle steel through the fifth bolt, the other side of the third angle steel is connected with the lower flange of the H-section steel column through the sixth bolt; the first angle steel is provided with a first long strip through hole to allow the first bolt to pass; the lower flange of the short span H-section steel beam is provided with a second long strip through hole to allow the fifth bolt to pass. The failure of the joint occurs at the joint of beams and columns, and the plastic hinge is not improved.
[0012] 3. A fabricated beam-to-column joint with a steel beam (CN110607842A) comprises a concrete column, cantilever beams, a concrete beam and a rectangular outer steel sleeve. The cantilever beams are symmetrically arranged at both sides of the concrete column, and a rectangular steel beam horizontally penetrating both ends and the concrete column is embedded inside the two cantilever beams, and the rectangular steel beams respectively penetrate through the two ends of the horizontal ends of the two cantilever beams to outwardly extend symmetrically. The number of the concrete beams is 2 and the concrete beams are respectively arranged at both sides of the concrete column. The end of the concrete beam adjacent to the end of the rectangular steel beam is provided with a rectangular inner hole, and the rectangular inner steel sleeve is arranged in the rectangular inner hole, and the outwardly extended part of the rectangular steel beam is inserted into the inside of the rectangular inner steel sleeve, the rectangular outer steel sleeve is wrapped at the joint of the cantilever beam and the concrete beam, and the rectangular outer steel sleeve locks and connects the joint between the cantilever beam and the concrete beam through the bolt vertically penetrating through the cantilever beam and the concrete beam. After the concrete in the steel sleeve of the joint of the joint is crushed, the structure will be suddenly and greatly deformed. And it is difficult to observe because of the cover of the steel sleeve.
[0013] Through the comparison of technical features, the technical structures in the above disclosed document and the disclosure are different, and the inventiveness and novelty of the present application are not affected.
[0014] The objective of the disclosure is to provide a fabricated beam-to-column joint and a construction method in order to overcome the defects in the prior art. The fabricated beam-to-column joint of the disclosure is easy to construct, excellent in stress performance of the joint and strong in rigidity. The disclosure solves the technical problem that the beam-to-column joint in a fabricated concrete frame structure is difficult to connect.
[0015] The technical problem to be solved by the disclosure is achieved by adopting the following technical solution:
[0016] Provided is a fabricated beam-to-column joint, comprising a column and a beam, wherein the column comprises longitudinal ribs, stirrups and embedded parts, the stirrups are located outside the longitudinal ribs, the embedded parts are inserted and bundled through the stirrups and the longitudinal ribs to be limited and fixed, and the longitudinal ribs, the stirrups and the embedded parts form a complete column through pouring of concrete; the beam comprises longitudinal ribs, stirrups and embedded H-section steel, the stirrups are located outside the longitudinal ribs, and the end of the longitudinal rib is connected with the embedded H-section steel through welding; the longitudinal ribs, the stirrups and the embedded H-section steel form a complete beam through pouring of concrete, the end surfaces of the embedded parts are all vertically welded with beam-to-column joint steel plates at intervals, the beam is inserted between the beam-to-column joint plates to be externally connected with the end surfaces of the embedded parts of the column, and bolted with the beam-to-column joint steel plates.
[0017] Furthermore, the embedded part is an I-shaped corrugated steel embedded part and comprises corrugated steel and column side steel plates, the column side steel plates are symmetrically and fixedly mounted at two ends of the corrugated steel, and the quantity of the corrugated steel is 1 or 2.
[0018] Furthermore, the embedded part is a #-shaped corrugated steel embedded part and comprises #-shaped corrugated steel and column side steel plates, the #-shaped corrugated steel is formed by welding four #-shaped corrugated steel, and each end surface of the #-shaped corrugated steel is welded with the column side steel plates.
[0019] Furthermore, the embedded part is a crossed corrugated embedded part and comprises crossed corrugated steel and column side steel plates, the crossed corrugated steel is formed by welding two corrugated steel, and each end surface of the crossed corrugated steel is welded with the column side steel plates.
[0020] Furthermore, the embedded part also comprises a connection plate, and the connection plate is horizontally and fixedly mounted between the column side steel plates at the upper and lower positions of the corrugated steel.
[0021] Furthermore, limit holes for allowing the longitudinal ribs to penetrate are formed on the connection plates.
[0022] Furthermore, the embedded part also comprises high-strength rods, the high-strength rods are fixedly connected between the symmetrical column side steel plates, and the diameter of the high-strength rod and the distance between adjacent high-strength rods are set according to the requirements of connection strength.
[0023] Furthermore, the end of the corrugated steel extends out of the column end of the column by 100 mm-300 mm.
[0024] Furthermore, the length of the embedded H-section steel embedded into the beam concrete is 10-15 times of the diameter of the longitudinal rib of the beam.
[0025] Provided is a construction method of a fabricated beam-to-column joint, comprising the following steps:
[0026] step 1, fabricating a column: embedded parts are selected according to design specification, the embedded parts are placed on a template of a column according to a position specified by design, then longitudinal ribs are arranged, the longitudinal ribs are limited and penetrate through limit holes on the connection plate of the embedded part or spaces between adjacent high-strength rods to achieve limit fixation of the embedded parts, stirrups are bundled outside the longitudinal ribs, the stirrups allow the embedded parts to be further limited and fixed on the longitudinal ribs, and concrete is poured until curing is completed.
[0027] step 2, fabricating a beam: the embedded H-section steel is placed at one end of the template of the beam according to the position specified by design, the longitudinal ribs and the stirrups are arranged to form a reinforcement cage, contact surfaces between the longitudinal ribs and the upper and lower surfaces of the H-section steel are welded and fixed and the longitudinal ribs and the stirrups are bundled, and then concrete is poured until curing is completed; and
[0028] step 3, before on-site hoisting, vertically welding two beam-to-column joint steel plates on the column side steel plate of the embedded part of the fabricated column at intervals according to needs, when in installation, inserting the end of the embedded H-section steel between the beam-to-column joint steel plates to be welded with the end surface of the embedded part of the column, and then bolted with the beam-to-column joint plates by using bolts;
[0029] step 1 and step 2 are not in order.
[0030] The disclosure has the advantages and beneficial effects:
[0031] 1. The flange of the embedded H-section steel of the disclosure is externally connected with the embedded part in the core area of the joint. The external connection mode can be welded through the edge or bolted by setting a connection plate, and the connection form of the bolted connection of the web of the embedded H-section steel and the beam-to-column joint plate is combined. The structure is reliable to connect, the force transmission way is simple and effective, and thus the integrity of the joint is improved; the disclosure is simple in joint configuration form and reliable in force transmission mechanism, solves the problem of over crowded reinforcements in the core area of the previous fabricated joint and effectively improves the stress performance of the fabricated joint.
[0032] 2. The prefabricated members of the disclosure are all completed in the factory, and it is needed to conduct only welded and bolted connection on site so as to simplify the construction process and accelerate the construction speed; and the beam and column are more accurate to position, fast and convenient to construct, so as to promote the construction efficiency.
[0033] 3. According to the disclosure, the main stress part of the embedded part in the core area adopts corrugated steel to replace the original steel plate, and the corrugated steel is good in concrete adhering property and more beneficial to shearing resistance of the joint, thereby exerting the higher efficacy of steel, improving the rigidity of the embedded parts in the prefabricated column, reducing the deformation, and improving the bearing capacity of the overall joint; the corrugated steel of the embedded part in the core area also extends out of the column end by 100 mm-300 mm, so that the beam-to-column joint position outwardly moves from the core area of the joint, and the plastic hinge effectively and outwardly moves, thereby meeting the corresponding seismic requirements.
[0034] 4. According to the disclosure, connecting plates are fixed horizontally or a plurality of high-strength rods are horizontally mounted between the column side steel plates at the upper and lower positions of the corrugated steel of the embedded part. Through the connection plate or high-strength rod and the longitudinal ribs, the limit fixation in a horizontal direction is realized. At the same time, by adding the connection plate and the high-strength rod, the self strength of the column and the bearing capacity of the whole joint are greatly improved.
[0035] Fig.1 is a structural diagram of a joint of a connection plate set in example 1.
[0036] Fig.2 is a structural diagram of an embedded part of a connection plate set in example 1.
[0037] Fig.3 is a structural diagram of the end of a corrugated steel extending out of the edge of the column by a certain distance.
[0038] Fig.4 is a structural diagram of an embedded part of a high-strength rod set in example 1.
[0039] Fig. 5 is a structural diagram of a joint of a #-shaped corrugated steel embedded part of a connection plate set in example 2.
[0040] Fig. 6 is a structural diagram of a #-shaped corrugated steel embedded part of a connection plate set in example 2.
[0041] Fig. 7 is a joint structure diagram of an end of a #-shaped corrugated steel extending out of a column by a certain distance in example 2.
[0042] Fig. 8 is a structural diagram of a #-shaped corrugated steel embedded part of a high-strength rod set in example 2.
[0043] Fig. 9 is a structural diagram of an end of a #-shaped corrugated steel end of a high-strength rod extending out of an edge of a column by a certain distance set in example 2.
[0044] Fig. 10 is a structural diagram of a crossed corrugated steel embedded part of a connection plate set in example 2.
[0045] Fig. 11 is a structural diagram of a joint of an end of a cross corrugated steel extending out of an edge of a column by a certain distance in example 2.
[0046] Fig. 12 is a structural diagram of a crossed corrugated steel embedded part of a high-strength rod set in example 2.
[0047] The disclosure will be further described in detail in combination with drawings. The following examples are only descriptive but not limiting, and cannot whereby define the protective scope of the disclosure.
[0048] Example 1
[0049] A fabricated beam-to-column joint includes a column 1 and two beams 2, wherein the beams and the column are fixedly connected through an embedded H-section steel 2-1 at one ends of the beams. In this example, two side surfaces of the column are simultaneously and respectively connected with one beam; in this example, connections of the column and all the beams are the same in structure, the specific structures of the connections of the end of the beam and the side surfaces of the columns are as follows:
[0050] The column includes longitudinal ribs 1-1, stirrups 1-2 and embedded parts 1-3, wherein the stirrups are located outside the longitudinal ribs, the embedded parts are limited and fixed through insertion and bundling of the stirrups and the longitudinal ribs; the embedded part includes corrugated steel 1-3-1 and column side steel plates 1-3-2, and the two column side steel plates are symmetrically and fixedly mounted at two ends of the corrugated steel; in order to further improve the itself strength of the column and the bearing capability of the whole joint, a connection plate 1-3-3 is horizontally and fixedly mounted between two column side steel plates at both ofupper and lower positions of the corrugated steel or high-strength rods 1-3-5 are uniformly distributed between two column side steel plates at both ofupper and lower positions of the corrugated steel at intervals to form one complete I-shaped embedded part whose two sides are provided with beams, the connection plates are all provided with limit holes 1-3-4 for allowing the longitudinal rib to penetrate, the high-strength rods are fixedly connected between symmetric column side steel plates at intervals, the distance between adjacent high-strength rods and the diameter of the high-strength rod are all set according to requirements of connection strength.
[0051] The quantity of the corrugated steel in this example can be 1 or 2. The corrugated steel is fixed in the column through pouring of concrete, and the column side steel plates are located on the edges of the column. When the corrugated steel extends out of the column, the steel plates at the two ends of the column extend out of the column, and the distance of the corrugated steel extending out of the side of the column is 100-300 mm, and the extension distance in this example is preferably 200 mm. Because the corrugated steel of the embedded part in the core area extends out so that the beam-to-column joint position outwardly moves from the joint core area, and a plastic hinge can effectively and outwardly move, thereby meeting corresponding seismic requirements;
[0052] The beam includes longitudinal ribs 2-2, stirrups 2-3 and embedded H-section steel 2-1, wherein the stirrups are located outside the longitudinal ribs, the ends of the longitudinal ribs are connected with the embedded H-section steel through welding, so that the embedded H-section steel is fixed on the end of the beam to constitute the embedded part. When in construction, the length of the embedded H-section steel embedded into the beam concrete is 10-15 times the diameter of the longitudinal rib of the beam;
[0053] Further, the corrugated steel of the embedded part is vertical to the plane of the column side steel plate, the longitudinal rib is parallel to the plane of the column side steel plate, and the H-section steel is vertical to the plane of the column side steel plate; the longitudinal rib is vertical to the plane of the flange of the H-section steel, and the plane of the flange of the embedded H-section steel is parallel to the plane of the stirrup;
[0054] In this example, when the column and the beam are assembled on site, one end of the embedded H-section steel is welded with the column side steel plate, namely, the upper flange, the web and the lower flange of one end of the embedded H-section steel are respectively welded with the column side steel plate, or bolted with the column side steel plate through the connection plate arranged at one end of the embedded H-section steel; this example adopts a welding manner;
[0055] Further, beam-to-column joint steel plates 4 are symmetrically welded on all the column side steel plates, and bolt holes are formed at corresponding positions of the beam-to-column joint steel plate and the embedded H-section steel web. When splicing, the embedded H-section steel web is inserted into a space between the symmetrically arranged beam-to-column joint steel plates to be fixed, and the beam-to-column joint steel plates are fixedly connected with the H-section steel web through bolts 3.
[0056] Further, the beam-to-column joint steel plate is vertical to the plane of the column side steel plate.
[0057] Further, the joints between the embedded H-section steel and the column side steel plate are all welded by using penetration grooves or fillet welds;
[0058] The joints between the beam-to-column joint steel plate and the column side steel plate are all welded by fusion grooves or fillet welds.
[0059] The disclosure also provides a construction method of a fabricated beam-to-column joint, including the following steps:
[0060] step 1: fabricating a column: corrugated steel is fixed between two column side steel plates, and a connection plate or a high-strength rod is horizontally fixed between the column side steel plates at the upper and lower positions of the corrugated steel to form an I-shaped embedded part. The embedded part is placed on the template of the column according to the position specified in the design, and then the longitudinal ribs are arranged at first, and the longitudinal ribs are limited and pass through the limit holes on the connection plate of the embedded part or a space between adjacent high-strength rods to achieve the limit fixation of the embedded part, and then the stirrups are bundled outside the longitudinal ribs, and the stirrups allow the embedded parts to be further limited and fixed on the longitudinal ribs, and then the concrete is poured until curing is completed;
[0061] step 2: fabricating abeam: the embedded H-section steel is placed atone end of the template of the beam according to the position specified in the design, and then the longitudinal ribs and the stirrups are arranged to form a reinforcement cage, then the contact positions of the longitudinal ribs and the upper and lower surfaces of the H-section steel are welded and fixedly connected, and the longitudinal ribs and the stirrups are bundled, and then the concrete is poured until curing is completed;
[0062] step 3: before on-site hoisting, according to the requirements, two beam-to-column joint steel plates are vertically welded on the column side steel plate of the embedded part of the fabricated column. During installation, the end of the embedded H-section steel is inserted between the beam-to-column joint steel plates, and vertically welded with the end surface of the inc-column embedded part in the column, and then bolted with the beam-to-column joint steel plate by using bolts;
[0063] step one and step two are not in order.
[0064] Example 2
[0065] A fabricated beam-to-column joint includes a column and four beams, wherein the four side surfaces of the column are simultaneously and respectively connected with one beam, the specific structure of the connection between the end of the beam and the side surface of the column is as follows:
[0066] the column includes longitudinal ribs, stirrups and embedded parts, wherein the stirrups are located outside the longitudinal ribs, the embedded parts are limited and fixed through insertion and bundling of the stirrups and the longitudinal ribs; the embedded part is a #-shaped embedded part 1-4 or a crossed embedded part 1-5, the #-shaped embedded part includes a #-shaped corrugated steel and four column side steel plates 1-4-2, and the #-shaped corrugated steel is formed by cutting and welding four corrugated steel 1-4-1 in a crossed manner; furthermore, the four end surfaces of the #-shaped embedded part are respectively welded with column side steel plates. In order to further improve the self strength of the column and the bearing capability of the whole joint, connection plates 1-4-3 or high-strength rods 1-4-5 are horizontally and fixedly mounted among the four column side steel plates at the upper and lower positions of the #-shaped corrugated steel to form a complete embedded part whose four sides are provided with the beams, all the connection plates are provided with limit holes 1-4-4 for allowing the longitudinal ribs to penetrate, the connection plate is a crossed connection plate, the high-strength rods are fixedly connected between the symmetrically arranged column side steel plates at intervals, the distance between adjacent high-strength rods and the diameter of the high-strength rod are set according to requirements of connection strength; the structure of the crossed embedded part is basically the same as that of the #-shaped embedded part, and the only difference is that the corrugated steel of the crossed embedded part is crossed and formed by cutting and welding two corrugated steel in a crossed manner;
[0067] the #-shaped corrugated steel and the crossed corrugated steel are both fixed in the column through pouring of concrete, and the column side steel plate is located on the edge of the column. When the end of the corrugated steel extends out of the column, the column side steel plates at the two ends thereof are located outside the column, and the distance of the corrugated steel extending out of the column side surface of the column is 100-300 mm, and the extension distance in this example is preferably 200 mm. Because the corrugated steel of the embedded part in the core area extends out so that the beam-to-column joint position outwardly moves from the core area of the joint, and a plastic hinge can effectively and outwardly move, thereby meeting corresponding seismic requirements.
[0068] The beam includes longitudinal ribs, stirrups and embedded H-section steel, wherein the stirrups are located outside the longitudinal ribs, and the end of the longitudinal rib is connected with the embedded H-section steel through welding, so that the embedded H-section steel is fixed at the end of the beam to constitute the embedded part. When in specific construction, the length of the embedded H-section steel embedded into the beam concrete is 10-15 times the diameter of the longitudinal rib of the beam.
[0069] Further, the corrugated steel of the embedded part is vertical to the plane of the column side steel plate, the longitudinal rib is parallel to the plane of the column side steel plate, and the H-section steel is vertical to the plane of the column side steel plate.
[0070] Further, the longitudinal rib is vertical to the plane of the flange of the H-section steel, and the plane of the flange of the embedded H-section steel is parallel to the plane of the stirrup.
[0071] In this example, when the column and the beam are assembled on site, one end of the embedded H-section steel is welded with the column side steel plate, namely, the upper flange, the web and the lower flange of one end of the embedded H-section steel are respectively welded with the column side steel plate, or bolted with the column side steel plate through the connection plate arranged at one end of the embedded H-section steel; this example adopts a welding manner.
[0072] Further, beam-to-column joint steel plates 4 are symmetrically welded on all the column side steel plates, and bolt holes are formed at corresponding positions of the beam-to-column joint steel plate and the embedded H-section steel web. When splicing, the embedded H-section steel web plate is inserted into an interval between the symmetrically arranged beam-to-column joint steel plates to be fixed, and the beam-to-column joint steel plates are fixedly connected with the H-section steel web plate through bolts 3.
[0073] Further, the beam-to-column joint steel plate is vertical to the plane of the column side steel plate.
[0074] Further, the joints between the embedded H-section steel and the column side steel plate are all welded by using penetration grooves or fillet welds;
[0075] The joints between the beam-to-column joint steel plate and the column side steel plate are all welded by fusion grooves orfillet welds.
[0076] The disclosure also provides a construction method of a fabricated beam-to-column joint, including the following steps:
[0077] step 1: fabricating a column: four or two corrugated steel are adopted and then cut and welded in a crossed manner to form the #-shaped corrugated steel or crossed corrugated steel. The four end surfaces of the above corrugated steel are respectively welded with column side steel plates, and a connection plate or a high-strength rod is horizontally fixed between the column side steel plates at the upper and lower positions of the corrugated steel to form an embedded part. The embedded part is placed on the template of the column according to the position specified in the design, and then the longitudinal ribs are arranged at first, and the longitudinal ribs are limited and pass through the limit holes on the connection plate of the embedded part or a space between adjacent high-strength rods to achieve the limit fixation of the embedded part, and then the stirrups are bundled outside the longitudinal ribs, and the stirrups allow the embedded parts to be further limited and fixed on the longitudinal ribs, and then the concrete is poured until curing is completed;
[0078] step 2: fabricating a beam: the H-section steel is placed on the template of the beam according to the position specified in the design, and then the longitudinal ribs and the stirrups are arranged to form a reinforcement cage, then the contact positions of the longitudinal ribs and the upper and lower surfaces of the H-section steel are welded and fixedly connected, and the longitudinal ribs and the stirrups are bundled, and then the concrete is poured until curing is completed;
[0079] step 3: before on-site hoisting, according to the requirements, the column side steel plate of the embedded part of the fabricated column is welded with two beam-to-column joint steel plates at intervals. During installation, the end of the embedded H-section steel is inserted between the beam-to-column joint steel plates, and vertically welded with the end surface of the inc-column embedded part in the column, and then bolted with the beam-to-column joint steel plate by using bolts;
[0080] step one and step two are in no order.
[0081] Although the description purpose discloses the embodiments and drawings of the disclosure, those skilled in the art can understand that various replacements, variations and modifications are possible without departing from the spirit and scope of the disclosure and appended claims. Therefore, the scope of the disclosure is not limited to the contents disclosed by the embodiments and drawings.
Claims (11)
- The claims for defining the invention are as follows: 1. A fabricated beam-to-column joint, comprising a column and a beam, wherein the column comprises longitudinal ribs, stirrups and embedded parts, the stirrups are located outside the longitudinal ribs, the embedded parts are limited and fixed by penetrating and bundling the stirrups and the longitudinal ribs, and the longitudinal ribs, the stirrups and the embedded parts form a complete column through pouring of concrete; the beam comprises longitudinal ribs, stirrups and embedded H-section steel, the stirrups are located outside the longitudinal ribs, and the end of the longitudinal rib is connected with the end of the embedded H-section steel through welding; the longitudinal ribs, the stirrups and the embedded H-section steel form a complete beam through pouring of concrete, beam-to-column joint steel plates are vertically welded on the end surface of the embedded parts of the column at intervals, and the beam is inserted between the beam-to-column joint plates through the end of the embedded H-section steel to be externally connected with the end surfaces of the embedded parts of the column, and bolted with the beam-to-column joint steel plates.
- 2. The fabricated beam-to-column joint according to claim 1, wherein the embedded part is I-shaped corrugated steel embedded part and comprises corrugated steel and column side steel plates, the column side steel plates are symmetrically and fixedly mounted at two ends of the corrugated steel, and the quantity of the corrugated steel is 1 or 2.
- 3. The fabricated beam-to-column joint according to claim 1, wherein the embedded part is a #-shaped corrugated steel embedded part and comprises #-shaped corrugated steel and column side steel plates, the #-shaped corrugated steel is formed by welding four #-shaped corrugated steel, and each end surface of the #-shaped corrugated steel is welded with the column side steel plates.
- 4. The fabricated beam-to-column joint according to claim 1, wherein the embedded part is a crossed corrugated embedded part and comprises crossed corrugated steel and column side steel plates, the crossed corrugated steel is formed by welding two corrugated steel, and each end surface of the crossed corrugated steel is welded with column side steel plates.
- 5. The fabricated beam-to-column joint according to any one of claims 2-4, wherein the embedded part also comprises a connection plate, and the connection plate is horizontally and fixedly mounted between the column side steel plates at the upper and lower positions of the corrugated steel.
- 6. The fabricated beam-to-column joint according to claim 5, wherein the connection plates are all provided with limit holes for allowing the longitudinal ribs to penetrate.
- 7. The fabricated beam-to-column joint according to any one of claims 2-4, wherein the embedded part also comprises high-strength rods, the high-strength rods are fixedly connected between the symmetrical column side steel plates at intervals, and the diameter of the high-strength rod and a distance between adjacent high-strength rods are set according to the requirements of connection strength.
- 8. The fabricated beam-to-column joint according to any one of claims 2-4, wherein the end of the corrugated steel extends out of the column end of the column by 100 mm-300 mm.
- 9. The fabricated beam-to-column joint according to claim 1, wherein the length of the embedded H-section steel embedded into the beam concrete is 10-15 times of the diameter of the longitudinal rib of the beam.
- 10. A construction method of a fabricated beam-to-column joint, comprising the following steps: step 1, fabricating a column: embedded parts are selected according to design specification, the embedded parts are placed on a template of a column according to positions specified by design, then longitudinal ribs are placed, the longitudinal ribs are limited and penetrate through limit holes on the connection plate of the embedded parts or spaces between adjacent high-strength rods to achieve limit fixation of the embedded parts, stirrups are bundled outside the longitudinal ribs, the stirrups allow the embedded parts to be further limited and fixed on the longitudinal ribs, and concrete is poured until curing is completed; step 2, fabricating a beam: the embedded H-section steel is placed at one end of the template of the beam according to the position specified by design, the longitudinal ribs and the stirrups are arranged to form a reinforcement cage, contact surfaces between the longitudinal ribs and the upper and lower surfaces of theH-section steel are welded and fixed and the longitudinal ribs and the stirrups are bundled, and then concrete is poured until curing is completed; and step 3, before on-site hoisting, vertically welding two beam-to-column joint steel plates on the column side steel plate of the embedded part of the fabricated column at intervals according to needs, when in installation, inserting the end of the embedded H-section steel between the beam-to-column joint steel plates to be welded with the end surface of the embedded part of the column, and then bolted with the beam-to-column joint plates by using bolts; step 1 and step 2 are not in order.1/7FIG. 12/7FIG. 3 FIG. 23/7FIG. 5 FIG. 44/7FIG. 7 FIG. 65/7FIG. 9 FIG. 86/7FIG.
- 11 FIG. 107/7FIG. 12
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727475.6A CN111997193A (en) | 2020-07-27 | 2020-07-27 | Assembly type prefabricated beam column connecting joint and construction method |
| CN202010727475.6 | 2020-07-27 |
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| Publication Number | Publication Date |
|---|---|
| AU2020101918A4 true AU2020101918A4 (en) | 2020-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| AU2020101918A Ceased AU2020101918A4 (en) | 2020-07-27 | 2020-08-20 | Fabricated beam-to-column joint and construction method |
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| CN (1) | CN111997193A (en) |
| AU (1) | AU2020101918A4 (en) |
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