Prefabricated beam-column connecting joint and prefabricated frame structure
By adopting dry connection technology in prefabricated beam-column connection nodes, and using the combination of prefabricated columns and prefabricated beams, the problems of increasing temporary support costs and difficult to control construction quality caused by secondary concrete pouring in the prior art are solved, and higher engineering quality and faster construction speed are achieved.
Patent Information
- Application Number
- CN202420635914.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The existing prefabricated concrete structural system requires secondary concrete pouring at beam and column nodes, resulting in increased temporary support costs, difficult to control construction quality, extended construction period and inability to review hidden projects.
Prefabricated assembled beams and column connection nodes are adopted. By precasting the end prefabricated beams on the prefabricated columns, and end beam connection attachments and main beam connection attachments are set at the relative positions of the end prefabricated beams and the main prefabricated beams. Dry connections are achieved through welding and/or bolt connections to avoid secondary concrete pouring.
No temporary support is required, which saves support costs, improves project quality and construction speed, reduces construction period, and the connection strength and quality at nodes are more controllable, making it easier to conduct post-inspection and review.
Smart Images
Figure CN222575741U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building structures, in particular to a prefabricated assembled structure, and specifically to a prefabricated assembled beam-column connection node and a prefabricated assembled frame structure. Background Art
[0002] Existing prefabricated concrete structure systems are mostly manufactured in factories through prefabricated concrete columns, concrete beams, concrete walls, etc., which are transported to the construction site, connected on site through steel anchoring or steel sleeve grouting, and concrete is poured a second time at the connection position. The next step of construction is carried out when the concrete reaches a certain strength.
[0003] There is often secondary concrete pouring in the beam-column joints of the existing prefabricated concrete structure system, so there are the following shortcomings: 1. Since the beam-column joints cannot be fixed during the hoisting stage, it is necessary to set up temporary supports before hoisting to support the stability of the concrete columns and concrete beams. The temporary supports can only be removed after the secondary pouring reaches a certain strength, which will increase the support rental costs, support hoisting costs, support installation costs, support removal costs, etc.; 2. The steel bars at the connection nodes of concrete columns and concrete beams are all in the same section, while the cast-in-place concrete structure specification requires that the percentage of lap joints of tensile steel bars in the same connection section should not exceed If the ratio exceeds 25% and 50%, the prefabricated components have higher requirements for construction quality; 3. If steel sleeve grouting is used, the grouting control details are more and the quality requirements are higher. It is easy to make mistakes during construction, affecting the quality of the project, and the secondary pouring of concrete is a hidden project and cannot be reviewed; 4. After the steel bars are connected, secondary post-pouring of concrete is required. Due to the secondary post-pouring, the treatment of the joints is more complicated and it is difficult to form the effect of a single pouring, which can easily cause cracking and other problems; 5. Due to the secondary pouring of concrete at the beam-column node, a stable structure cannot be formed before the poured concrete reaches a certain strength, and the construction of the next floor cannot be carried out, affecting the construction period. Utility Model Content
[0004] In view of the deficiencies in the prior art, the main purpose of the utility model is to provide a prefabricated and assembled beam-column connection node and a prefabricated and assembled frame structure to solve the above-mentioned problems.
[0005] The technical solution of the utility model is as follows:
[0006] The utility model provides a prefabricated assembled beam-column connection node, comprising: a prefabricated column, which is a reinforced concrete column; an end prefabricated beam, which is a reinforced concrete beam, formed integrally on the prefabricated column, and provided with a first longitudinal rib therein, the first longitudinal rib at least partially cast in the end prefabricated beam, partially extended into the prefabricated column, and cast integrally with the prefabricated column; an end beam connection attachment, at least partially arranged in the end prefabricated beam, partially reserved outside the end prefabricated beam, the portion arranged in the end prefabricated beam being welded or bolted to the first longitudinal rib; a main prefabricated beam, which is a reinforced concrete beam, provided with a second longitudinal rib therein, the second longitudinal rib at least partially cast in the main prefabricated beam; a main beam connection attachment, at least partially arranged in the main prefabricated beam, partially reserved outside the main prefabricated beam, the portion arranged in the main prefabricated beam being welded or bolted to the second longitudinal rib; and the main beam connection attachment is arranged opposite to the end beam connection attachment, and the two are fixed by welding and / or bolting to connect and fix the main prefabricated beam to the prefabricated column.
[0007] In some embodiments, a plurality of column densification stirrups are provided in the prefabricated column, and the plurality of column densification stirrups are arranged in the prefabricated column corresponding to the extended parts of the first longitudinal reinforcement, and the setting height of the plurality of column densification stirrups is not less than the cross-sectional height of the end prefabricated beam.
[0008] In some embodiments, the end beam connecting attachment is arranged along the inner side of the first longitudinal rib, and at least 1 / 2 of the cross-sectional height of the end beam connecting attachment and the end precast beam are cast in concrete as a whole.
[0009] In some embodiments, the first longitudinal ribs are symmetrically arranged at the upper edge and the lower edge of the end precast beam, and concrete is poured integrally with the end precast beam along the upper edge and / or the lower edge of the end precast beam.
[0010] In some embodiments, the main beam connecting attachment is arranged along the inner side of the second longitudinal rib, and at least 1 / 2 of the cross-sectional height of the main beam connecting attachment and the main precast beam are cast with concrete as a whole.
[0011] In some embodiments, the end beam connecting accessory and the main beam connecting accessory are both H-shaped steels, and bolt holes are correspondingly opened on the web and / or upper and lower flange plates of the H-shaped steel. The end beam connecting accessory and the main beam connecting accessory are butt-jointed and the web and / or upper and lower flange plates are fixed by bolt connection, or are fixed by full penetration welding.
[0012] In some embodiments, studs are vertically welded on the web and / or flange of the H-shaped steel, and the studs are symmetrically arranged along two sides of the web and / or flange.
[0013] In some embodiments, the end precast beam is provided with a plurality of end beam encrypted stirrups, the length of the plurality of end beam encrypted stirrups is not less than the length of the portion of the end beam connected and attached to the end precast beam, and part or all of the plurality of end beam encrypted stirrups are cast as one body with the end precast beam.
[0014] In some embodiments, the main precast beam is provided with a plurality of main beam reinforcement stirrups, the length of the plurality of main beam reinforcement stirrups is not less than the length of the portion of the main beam connected to the main precast beam, and part or all of the plurality of main beam reinforcement stirrups are cast as one with the main precast beam.
[0015] The utility model also provides a prefabricated assembled frame structure, comprising the above-mentioned prefabricated assembled beam-column connection node.
[0016] The beneficial effects of the utility model compared to the prior art are as follows: the utility model proposes a prefabricated beam-column connection node and a prefabricated frame structure. Under the premise of ensuring the strength of the node connection, the utility model improves the node structure, removes temporary supports with dry connections and saves temporary support costs, improves the quality of the project, and increases the construction speed to save construction period. The utility model pre-casts a section of end prefabricated beam on the prefabricated column, and then respectively sets an end beam connection accessory and a main beam connection accessory at the relative positions of the end prefabricated beam and the main prefabricated beam. The end beam connection accessory and the main beam connection accessory are fixed by bolt connection or welding, and there is no need for secondary concrete pouring. The quality is more controllable, and a stable structure can be formed after hoisting and assembly. After the construction of one layer is completed, the construction of the next layer can be carried out, which improves the construction speed. Since the utility model adopts the connection of the end beam connection accessory and the main beam connection accessory, it is convenient for later detection, review, identification, etc., and there is no hidden project.
[0017] It should be understood that the implementation of any embodiment of the present utility model does not mean that multiple or all of the above-mentioned beneficial effects must be possessed or achieved at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0020] Figure 1 This is a schematic plan view of a beam-column connection node according to an embodiment of the utility model;
[0021] Figure 2 This is a schematic elevation diagram of a beam-column connection node according to an embodiment of the utility model;
[0022] Figure 3 for Figure 2 Schematic diagram of the section at the aa(bb) position;
[0023] Figure 4 This is a schematic elevation diagram of a beam-column connection node according to another embodiment of the utility model;
[0024] Figure 5 for Figure 4 Schematic diagram of the section at the aa(bb) position;
[0025] Figure 6 This is a schematic diagram of the connection between the end beam connection accessory and the main beam connection accessory in one embodiment of the utility model;
[0026] Figure 7 for Figure 6 Schematic diagram of the section at the aa(bb) position;
[0027] Figure 8 For the corresponding Figure 2 , Figure 3 Schematic diagram of the elevation of the prefabricated assembled frame structure of the beam-column connection node of the embodiment;
[0028] Fig. 9 For the corresponding Figure 4 , Figure 5 Schematic elevation view of a prefabricated assembled frame structure of a beam-column connection node in an embodiment.
[0029] Markings in the figure:
[0030] 1-precast column; 101-column reinforcement; 2-end precast beam; 201-first longitudinal reinforcement; 202-end beam reinforcement; 3-end beam connection attachment; 4-main precast beam; 401-second longitudinal reinforcement; 402-main beam reinforcement; 5-main beam connection attachment; 6-stud; 7-bolt hole.
[0031] In the various drawings, the same or corresponding reference numerals represent the same or corresponding parts. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model more clear, the embodiment of the utility model is further described in detail below in combination with the embodiment and the drawings. Here, the illustrative embodiment of the utility model and its description are used to explain the utility model, but are not used as a limitation of the utility model.
[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] It should be understood that the terms "include / comprise", "consist of..." or any other variations are intended to cover non-exclusive inclusion, so that a product, device, process or method that includes a series of elements includes not only those elements, but also may include other elements not explicitly listed when necessary, or also includes elements inherent to such product, device, process or method. In the absence of more restrictions, the elements defined by the sentence "include / comprise...", "consist of..." do not exclude the presence of other identical elements in the product, device, process or method that includes the elements.
[0035] It is also necessary to understand that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device, component or structure referred to must have a specific direction, be constructed or operate in a specific direction, and cannot be understood as a limitation on the present invention.
[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0037] The implementation of the present invention is described in detail below in conjunction with preferred implementation modes.
[0038] like Figures 1 to 7 As shown, the utility model proposes a prefabricated assembled beam-column connection node, including a prefabricated column 1, an end prefabricated beam 2, an end beam connection accessory 3, a main prefabricated beam 4 and a main beam connection accessory 5. Among them, one end of the end prefabricated beam 2 is cast together with the prefabricated column 1, and the other end is provided with the end beam connection accessory 3, and the main prefabricated beam 4 is provided with a main beam connection accessory 5 at one end corresponding to the end beam connection accessory 3. The prefabricated column 1 and the main prefabricated beam 4 are welded or bolted at the construction site through the end beam connection accessory 3 and the main beam connection accessory 5, without the need for secondary concrete pouring, and the quality is more controllable. Moreover, a stable structure can be formed after hoisting and assembly. After the construction of one layer is completed, the construction of the next layer can be carried out, thereby improving the construction speed.
[0039] Specifically, the prefabricated column 1 is a reinforced concrete column, which is formed by tying longitudinal steel bars and stirrups and pouring concrete. The cross section of the prefabricated column 1 can be square, circular or other, and the preferred cross section in this embodiment is square.
[0040] See also Figure 2 , Figure 4 A plurality of column densification stirrups 101 are provided at the connection position of the corresponding end precast beam 2 in the precast column 1, and the setting height of the plurality of column densification stirrups 101 is not less than the cross-sectional height of the end precast beam 2, so as to improve the shear bearing capacity of the node here.
[0041] The end precast beam 2 is a reinforced concrete beam, which is cast integrally with the precast column 1. Through this setting, two goals can be achieved: 1. The reinforcement binding quality and casting quality of the precast column 1 and the end precast beam 2 are guaranteed, and the requirements of strong nodes are achieved through factory construction; 2. The bending moment at the on-site assembly position of the end precast beam 2 and the main precast beam 4 is small, which can reduce the connection requirements of the end beam connection attachment 3 and the main beam connection attachment 5, and ensure the reliability and redundancy of the connection position.
[0042] Specifically, the end precast beam 2 is provided with a first longitudinal rib 201, which is at least partially cast in the end precast beam 2 and partially extends into the precast column 1, and is cast integrally with the precast column 1. Figure 3 , Figure 5 The first longitudinal ribs 201 are symmetrically arranged at the upper and lower edges of the end precast beam 2, and the first longitudinal ribs 201 are fixed to the upper and lower flanges of the end beam connection attachment 3 in the end precast beam 2 by welding and / or bolt connection.
[0043] It should be understood that at least part of the pouring here refers to part or all of the first longitudinal reinforcement 201 and the concrete of the end precast beam 2 being poured integrally. Figure 3 , the first longitudinal ribs 201 are cast integrally with the concrete of the end precast beam 2 at the upper and lower edges of the end precast beam 2. or Figure 5The first longitudinal reinforcement 201 is only cast integrally with the concrete of the end precast beam 2 at the lower edge of the end precast beam 2. The first longitudinal reinforcement 201 may not be cast integrally with the concrete of the end precast beam 2 at the upper edge of the end precast beam 2, so as to be cast together with the later concrete floor slab to form a whole.
[0044] See also Figure 2 , Figure 4 , the first longitudinal reinforcement 201 is anchored in the prefabricated column 1.
[0045] Continue to see Figure 2 , Figure 4 A plurality of end beam encrypted stirrups 202 are arranged in the end precast beam 2, and the length of the plurality of end beam encrypted stirrups 202 is not less than the length of the portion of the end beam connecting attachment 3 in the end precast beam 2, so as to improve the shear bearing capacity of the node here.
[0046] It should be understood that the end beam encrypted stirrups 202 in the present invention are different from the conventional stirrups in the beam body, and are arranged more densely.
[0047] In some embodiments, part or all of the end beam reinforcement stirrups 202 are cast together with the concrete of the end precast beam 2. It should be understood that part or all here means that part or all of the end beam reinforcement stirrups 202 are cast together with the concrete of the end precast beam 2. Figure 3 The end beam reinforcement stirrups 202 are cast integrally with the concrete of the end precast beam 2 at the upper and lower edges of the end precast beam 2. Or Figure 5 The end beam dense stirrups 202 are only cast integrally with the concrete of the end precast beam 2 at the lower edge of the end precast beam 2. The end beam dense stirrups 202 may not be cast integrally with the concrete of the end precast beam 2 at the upper edge of the end precast beam 2, so as to be cast together with the later concrete floor slab to form a whole.
[0048] In some embodiments, the length of the end precast beam 2 is not less than 1 / 2 of its height, so that the beam-column connection can be cast in one step and the quality of the connection node can be guaranteed; at the same time, the bending moment at the connection position between the end precast beam 2 and the main precast beam 4 is smaller, which can reduce the connection requirements of the end beam connection accessory 3 and the main beam connection accessory 5, and ensure the reliability and redundancy of the connection position.
[0049] An end beam connecting accessory 3 is provided on the side of the end precast beam 2 away from the precast column 1. The end beam connecting accessory 3 is partially arranged in the end precast beam 2 and is cast integrally with the main end precast beam 2; a part of it is reserved outside the main precast beam 4 and connected to the main beam connecting accessory 5 in the main precast beam 4.
[0050] See also Figure 2 , Figure 4The part of the end beam connection attachment 3 arranged in the end precast beam 2 is arranged along the inner side of the first longitudinal rib 201, that is, it is arranged between the first longitudinal ribs 201 symmetrically arranged along the upper edge and the lower edge of the end precast beam 2, and is welded and / or bolted to the first longitudinal rib 201.
[0051] It is easy to understand that in the present utility model, see Figure 3 , Figure 5 Whether it is the end precast beam 2 or the main precast beam 4, there are two casting methods, one is the overall casting, and the other is the casting of the lower end without casting the upper end of the beam (the uncast height is the floor height), and the uncast part of the upper end is cast together with the concrete floor to form a whole.
[0052] See also Figure 6 , Figure 7 The end beam connection attachment 3 is an H-shaped steel, one side of which is arranged in the end precast beam 2, and the other side is exposed to connect the main precast beam 4, wherein the upper and lower flange plates and / or web plates arranged on one side of the end precast beam 2 are vertically welded with studs 6, and the studs 6 are symmetrically arranged along the two sides of the upper and lower flange plates and / or web plates of this part, and the integrity of the concrete of the end beam connection attachment 3 and the end precast beam 2 is enhanced with the help of the studs 6.
[0053] In addition, bolt holes 7 are provided on the upper and lower flange plates and / or the web plates of the exposed portion of the H-shaped steel connector to facilitate bolt connection of the main prefabricated beam 4 and the end prefabricated beam 2 .
[0054] The main precast beam 4 is a reinforced concrete beam, which is arranged between the end precast beams 2 on the two precast columns 1 and is used to support floors, roofs or other loads to ensure the stability of the building structure.
[0055] Specifically, the main precast beam 4 is provided with a second longitudinal rib 401, and the second longitudinal rib 401 is at least partially cast in the main precast beam 4. Figure 3 , Figure 5 The second longitudinal ribs 401 are symmetrically arranged at the upper and lower edges of the main precast beam 4 , and the second longitudinal ribs 401 are welded and / or bolted to the upper and lower flanges of the main beam connecting attachment 5 in the main precast beam 4 .
[0056] It should be understood that at least part of the pouring here refers to part or all of the second longitudinal reinforcement 401 being poured integrally with the concrete of the main precast beam 4. Figure 3 , the second longitudinal ribs 401 are cast integrally with the concrete of the main precast beam 4 at the upper and lower edges of the main precast beam 4. or Figure 5 The second longitudinal reinforcement 401 is only cast integrally with the concrete of the main precast beam 4 at the lower edge of the main precast beam 4. The second longitudinal reinforcement 401 may not be cast integrally with the concrete of the main precast beam 4 at the upper edge of the main precast beam 4, so as to be cast together with the later concrete floor slab to form a whole.
[0057] Continue to see Figure 2 , Figure 4 A plurality of main beam encrypted stirrups 402 are arranged in the main precast beam 4, and the length of the plurality of main beam encrypted stirrups 402 is not less than the length of the portion of the main beam connecting attachment 5 in the main precast beam 4, so as to improve the shear bearing capacity of the node here.
[0058] In some embodiments, part or all of the plurality of main beam reinforcement stirrups 402 are cast together with the concrete of the main precast beam 4. It should be understood that part or all here means that part or all of the main beam reinforcement stirrups 402 are cast together with the concrete of the main precast beam 4. For example Figure 3 The main beam reinforcement stirrups 402 are cast integrally with the concrete of the main precast beam 4 at the upper and lower edges of the main precast beam 4. Or Figure 5 The main beam dense stirrups 402 are only cast integrally with the concrete of the main precast beam 4 at the lower edge of the main precast beam 4. The main beam dense stirrups 402 may not be cast integrally with the concrete of the main precast beam 4 at the upper edge of the main precast beam 4, so as to be cast together with the later concrete floor slab to form a whole.
[0059] A main beam connecting attachment 5 is provided on one side of the main precast beam 4 close to the end precast beam 2. The main beam connecting attachment 5 is partially arranged inside the main precast beam 4 and cast integrally with the main precast beam 4; and partially reserved outside the main precast beam 4 and connected to the end beam connecting attachment 3 in the end precast beam 2.
[0060] See also Figure 2 , Figure 4 The part of the main beam connecting attachment 5 arranged in the main precast beam 4 is arranged along the inner side of the second longitudinal ribs 401, that is, it is arranged between the second longitudinal ribs 401 symmetrically arranged along the upper edge and the lower edge of the main precast beam 4, and is welded and / or bolted to the second longitudinal ribs 401.
[0061] Continue to see Figure 6 , Figure 7 The main beam connection attachment 5 is an H-shaped steel, one side of which is arranged in the main precast beam 4, and the other side is exposed to the outside for connecting the end precast beam 2, wherein the upper and lower flange plates and / or the web plates arranged on one side of the main precast beam 4 are vertically welded with studs 6, and the studs 6 are symmetrically arranged along the two sides of the upper and lower flange plates and / or the web plates of this part, and the integrity of the concrete of the main beam connection attachment 5 and the main precast beam 4 is enhanced with the help of the studs 6.
[0062] In addition, bolt holes 7 are provided on the upper and lower flange plates and / or the web plates of the exposed portion of the H-shaped steel connecting member, so as to facilitate connection with the bolt holes 7 of the end beam connecting attachment 3 through the connecting plate bolts.
[0063] In some embodiments, the upper and lower flange plates and / or web plates of the main beam connection attachment 5 and the upper and lower flange plates and / or web plates of the end beam connection attachment 3 are connected and fixed by full penetration welding.
[0064] The prefabricated assembled beam-column connection node proposed by the utility model is achieved by pre-casting a section of end prefabricated beam on the prefabricated column, and then arranging end beam connection accessories and main beam connection accessories at the relative positions of the end prefabricated beam and the main prefabricated beam respectively. The end beam connection accessories and the main beam connection accessories are fixed by bolt connection or welding, and there is no need to perform secondary concrete pouring. Dry connection is used to remove temporary supports and save temporary support costs, thereby improving project quality, increasing construction speed and saving construction period.
[0065] See also Figure 8 , Fig. 9 The utility model also provides a prefabricated frame structure including the above-mentioned prefabricated beam-column connection node. Through the beam-column connection node provided by the utility model, the prefabricated column and the prefabricated beam can be quickly connected, and the connection strength at the node can be guaranteed.
[0066] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.
[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A prefabricated beam-column connection node, characterized in that: include: Precast columns are reinforced concrete columns; The end precast beam is a reinforced concrete beam, which is integrally formed on the precast column and has a first longitudinal rib therein, wherein the first longitudinal rib is at least partially cast in the end precast beam and partially extends into the precast column, being cast integrally with the precast column; The end beam connection attachment is at least partially disposed in the end precast beam and partially reserved outside the end precast beam, and the portion disposed in the end precast beam is welded or bolted to the first longitudinal rib; The main precast beam is a reinforced concrete beam, in which a second longitudinal rib is provided, and the second longitudinal rib is at least partially cast in the main precast beam; The main beam connection attachment is at least partially disposed in the main precast beam and partially reserved outside the main precast beam, and the portion disposed in the main precast beam is welded or bolted to the second longitudinal rib; and The main beam connecting attachment and the end beam connecting attachment are arranged opposite to each other, and the two are connected and fixed by welding and / or bolts to connect and fix the main prefabricated beam and the prefabricated column.
2. The prefabricated beam-column connection node according to claim 1, characterized in that: The prefabricated column is provided with a plurality of column densification stirrups, and the plurality of column densification stirrups are arranged in the prefabricated column corresponding to the extended parts of the first longitudinal reinforcement, and the setting height of the plurality of column densification stirrups is not less than the cross-sectional height of the end prefabricated beam.
3. The prefabricated beam-column connection node according to claim 1, characterized in that: The end beam connecting attachment is arranged along the inner side of the first longitudinal rib, and at least 1 / 2 of the cross-sectional height of the end beam connecting attachment and the end precast beam are integrally cast with concrete.
4. The prefabricated beam-column connection node according to claim 1, characterized in that: The first longitudinal ribs are symmetrically arranged at the upper edge and the lower edge of the end precast beam, and concrete is poured integrally with the end precast beam along the upper edge and / or the lower edge of the end precast beam.
5. The prefabricated beam-column connection node according to claim 1, characterized in that: The main beam connecting attachment is arranged along the inner side of the second longitudinal rib, and at least 1 / 2 of the cross-sectional height of the main beam connecting attachment and the main precast beam are integrally cast with concrete.
6. The prefabricated beam-column connection node according to claim 1, characterized in that: The end beam connecting accessory and the main beam connecting accessory are both H-shaped steels, and bolt holes are correspondingly opened on the web and / or upper and lower flange plates of the H-shaped steel. The end beam connecting accessory and the main beam connecting accessory are butt-jointed and the web and / or upper and lower flange plates are fixed by bolt connection, or are fixed by full penetration welding.
7. The prefabricated beam-column connection node according to claim 6, characterized in that: Studs are vertically welded on the web and / or upper and lower flange plates of the H-shaped steel, and the studs are symmetrically arranged along two sides of the web and / or upper and lower flange plates.
8. The prefabricated beam-column connection node according to claim 1, characterized in that: The end precast beam is provided with a plurality of end beam encrypted stirrups, the length of which is not less than the length of the portion of the end beam connected to and attached to the end precast beam, and part or all of the plurality of end beam encrypted stirrups are cast as one with the end precast beam.
9. The prefabricated beam-column connection node according to claim 1, characterized in that: The main precast beam is provided with a plurality of main beam reinforcement stirrups, the length of which is not less than the length of the portion of the main beam connected to the main precast beam, and part or all of the plurality of main beam reinforcement stirrups are cast as one with the main precast beam.
10. A prefabricated frame structure, characterized in that: The prefabricated and assembled beam-column connection node comprises the prefabricated and assembled beam-column connection node as described in any one of claims 1 to 9.