A demountable assembly type beam-column structure

Abstract

The application provides a detachable assembly type beam-column structure, which comprises a prefabricated column, an overhanging beam and a prefabricated beam, the prefabricated column extends outward at one end to form the overhanging beam, and the overhanging beam is connected with the prefabricated beam through an energy dissipation system; the energy dissipation system comprises: a round-bottom flask-shaped energy dissipation piece which is fixedly connected with a round-bottom flask-shaped energy dissipation steel plate and a transverse sliding steel plate, the geometric shape of the round-bottom flask-shaped energy dissipation steel plate comprises a group of semicircular arcs and two groups of mirror image 1 / 4 elliptical arcs; a vertical insert piece which comprises a first vertical embedded steel plate, a second vertical embedded steel plate, a vertical sliding steel plate and a vertical insert steel plate, and a sliding opening of the energy dissipation piece is arranged in the middle of the vertical sliding steel plate; a support plate which is provided with a sub-pin seat at the end and is hinged with a female pin seat on the vertical insert steel plate through a round-head pin shaft; the transverse sliding steel plate can be pushed and pulled along the vertical sliding steel plate to adjust the width of the abdomen of the round-bottom flask-shaped energy dissipation steel plate, and the vertex of the support plate is supported at the vertex of the abdomen of the round-bottom flask-shaped energy dissipation steel plate.

Description

Technical Field

[0001] This invention relates to the field of prefabricated structure technology in civil engineering, and in particular to the design of an energy-dissipating, detachable prefabricated beam-column connection structure. Background Technology

[0002] Prefabricated buildings, also known as industrial buildings, are a new construction method with advantages such as controllable construction quality, short construction cycle, and environmental friendliness. They effectively solve the problems of cast-in-place structures, making prefabricated buildings a major means for the construction industry to achieve energy conservation and emission reduction. However, existing demolition methods for prefabricated buildings mostly rely on traditional blasting, manual labor, and mechanical demolition, which generate a large amount of construction waste and resource loss during these processes.

[0003] Prefabricated concrete structures are building structures constructed by prefabricating components in a factory, transporting them to the construction site, and assembling them on-site. Their overall integrity at joints and seismic performance are relatively inferior to cast-in-place structures. To ensure their seismic performance, the key is to ensure that the strength, stiffness, and ductility of their weakest points—beam-column joints—meet the required standards.

[0004] Precast beam-column connections are divided into two types: wet and dry. Wet connections are irreversible, components cannot be reused, and require significant manpower for post-earthquake repair and reinforcement, resulting in high difficulty and cost. Dry connections, primarily using bolts and welding, have poor energy dissipation capacity and cannot effectively absorb the energy released by an earthquake. Furthermore, the quality of on-site welding is difficult to guarantee, bolt holes weaken the cross-sectional strength, and post-earthquake deformation makes disassembly difficult. Therefore, it is necessary to consider the recycling of connection nodes and post-earthquake repair and replacement from the design stage, proposing a new type of prefabricated beam-column connection with better energy dissipation capacity and replaceable beam components. Summary of the Invention

[0005] To address the aforementioned technical bottlenecks, this application provides a detachable prefabricated beam-column structure, including prefabricated columns (1), cantilever beams (2), and prefabricated beams (3).

[0006] One end of the precast column (1) extends outward to form an overhanging beam (2), and the overhanging beam (2) and the precast beam (3) are connected by a tenon joint through an energy-dissipating system;

[0007] The energy-consuming system includes:

[0008] The round-bottom flask-shaped energy-consuming component (4) is formed by a round-bottom flask-shaped energy-consuming steel plate (41) and a transverse sliding steel plate (42). The geometric shape of the round-bottom flask-shaped energy-consuming steel plate (41) includes a set of semi-circular arcs and two sets of mirrored 1 / 4 elliptical arcs.

[0009] Vertical insertion piece (5) comprises first vertical pre-embedded steel plate (51), second vertical pre-embedded steel plate (52), vertical sliding steel plate (53) and vertical insertion steel plate (55), vertical sliding steel plate (53) is provided with energy dissipation piece sliding port (54) in the middle;

[0010] Support plate (6) is provided with sub-pin seat (61) at the end, and is hinged with female pin seat (56) on vertical insertion steel plate (55) through round head pin shaft (7);

[0011] The horizontal sliding steel plate (42) can be pushed and pulled along the vertical sliding steel plate (53) to adjust the width of the abdominal part of the round-bottom flask-shaped energy dissipation steel plate (41), and the support plate (6) is supported at the top of the abdominal part of the round-bottom flask-shaped energy dissipation steel plate (41).

[0012] In one possible implementation, the beam end of the outrigger beam (2) is in a stepped shape, comprising an upper outrigger beam stepped section (21) and a lower outrigger beam stepped section (22), the upper outrigger beam stepped section (21) is a short step and is provided with a round-bottom flask-shaped mortise (21a), and the lower outrigger beam stepped section (22) is a long step and is provided with a rectangular mortise (22a);

[0013] The overlapping end of the precast beam (3) is provided with a stepped structure complementary to the outrigger beam (2), comprising an upper precast beam stepped section (31) and a lower precast beam stepped section (32), the upper precast beam stepped section (31) is a long step, and the lower precast beam stepped section (32) is a short step;

[0014] The overlapping surface of the outrigger beam (2) and the precast beam (3) comprises an upper vertical overlapping surface (9), a horizontal overlapping surface (10) and a lower vertical overlapping surface (11), and the overlapping surface is filled with grouting material.

[0015] In one possible implementation, the width of the round-bottom flask-shaped mortise (21a) is the sum of the thicknesses of the vertical insertion steel plate (55) and the round-bottom flask-shaped energy dissipation steel plate (41);

[0016] The width of the rectangular mortise (22a) is equal to the thickness of the first vertical pre-embedded steel plate (51), and the height and length thereof penetrate the stepped port of the lower outrigger beam stepped section (22).

[0017] In one possible implementation, the horizontal sliding steel plate (42) is provided with two insertion piece sliding ports (42b) and a sliding steel plate (42a) in the height direction, the insertion piece sliding port (42b) is slidingly matched with the vertical sliding steel plate (53), and the sliding steel plate (42a) is slidingly matched with the energy dissipation piece sliding port (54);

[0018] The bottom of the round-bottom flask-shaped energy dissipation steel plate (41) and the end of the vertically inserted steel plate (55) are reserved with a deformation space with a spacing of 10-30 mm.

[0019] In a possible implementation, in the vertically inserted part (5), the height of the first vertically embedded steel plate (51) is equal to the beam height of the precast beam (3), and the height of the second vertically embedded steel plate (52) is equal to the overhanging height of the stepped section (31) of the precast beam.

[0020] The female pin seat (56) is symmetrically arranged on both sides of the vertically inserted steel plate (55), and the center line passes through the center of the round-bottom flask-shaped energy dissipation steel plate (41).

[0021] In a possible implementation, the pin hole diameter of the female pin seat (56) and the pin hole diameter of the male pin seat (61) are equal, the bottom of the round head pin shaft (7) is provided with a thread, and the round head pin shaft (7) is locked through the nut (8).

[0022] The contact surface between the support vertex of the support plate (6) and the abdominal vertex of the round-bottom flask-shaped energy dissipation steel plate (41) is a circular arc with a curvature radius consistent with the curvature of the abdominal part of the energy dissipation steel plate.

[0023] In a possible implementation, the neck width of the round-bottom flask-shaped energy dissipation steel plate (41) is 1.2-1.5 times the thickness of the vertically inserted steel plate (55), and the maximum width of the abdominal part is 3-4 times the neck width.

[0024] The ratio of the major axis to the minor axis of the 1 / 4 elliptical arc is 2:1 to 3:1.

[0025] In a possible implementation, the compressive strength of the grouting material is not less than 1.2 times the concrete strength of the precast beam (3).

[0026] The filling thickness of the grouting material of the superimposed surface (9, 10, 11) is 5-15 mm.

[0027] Compared with the prior art, the application has the following beneficial effects:

[0028] The application provides a detachable assembly type beam-column connection mode based on energy dissipation, the precast beam and the precast column are connected through a tenon joint of an energy dissipation system, without the need for on-site tightening of bolts and on-site welding, the end of the tensile energy dissipation part can be gently curved, and installation is convenient; when disassembled, there is no need for on-site cutting, the original component is protected to the greatest extent, and the detachable beam can start a second life and be reused when the first normal service life ends.

[0029] The energy dissipation piece is designed as multi-arc shapes, under the action of an earthquake, the energy dissipation piece absorbs seismic energy, and plays a role of energy dissipation through deformation, thereby improving the energy dissipation capacity of the node core area. Through deconstruction design, the plastic hinge is moved to the detachable point position, thereby improving the seismic performance of the node core area; the damage position is transferred from the node core area to the detachable point and the prefabricated beam, so that the component can be quickly replaced after the earthquake, the cost of later repair and reinforcement is reduced, the building is not demolished and rebuilt, and the whole-process green construction requirement is met. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0031] Figure 1 The overall structure schematic diagram of the detachable assembly type beam-column connecting structure provided by the present application is shown in the figure.

[0032] Figure 2 The top view schematic diagram of the detachable assembly type beam-column connecting structure provided by the present application is shown in the figure.

[0033] Figure 3 The structure schematic diagram of the prefabricated column and the overhanging beam of the present application is shown in the figure.

[0034] Figure 4 The structure schematic diagram of the prefabricated beam and the energy dissipation system of the present application is shown in the figure.

[0035] Figure 5 The structure schematic diagram of the round-bottom flask-shaped energy dissipation piece of the present application is shown in the figure.

[0036] Figure 6 The geometric shape schematic diagram of the round-bottom flask-shaped energy dissipation piece of the present application is shown in the figure.

[0037] Figure 7 The structure schematic diagram of the vertical insert of the present application is shown in the figure.

[0038] Figure 8 The structure schematic diagram of the support plate, round-head pin shaft and nut of the present application is shown in the figure.

[0039] 1, prefabricated column; 2, outrigger beam; 21, upper stepped section of outrigger beam; 21a, round-bottom flask-shaped mortise; 22, lower stepped section of outrigger beam; 22a, rectangular mortise; 3, prefabricated beam; 31, upper stepped section of prefabricated beam; 32, lower stepped section of prefabricated beam; 4, round-bottom flask-shaped energy dissipation member; 41, round-bottom flask-shaped energy dissipation steel plate; 42, transverse sliding steel plate; 42a, sliding steel plate; 42b, sliding mouth of insert; 5, vertical insert; 51, first vertical embedded steel plate; 52, second vertical embedded steel plate; 53, vertical sliding steel plate; 54, sliding mouth of energy dissipation member; 55, vertical insert steel plate; 56, female pin seat; 6, support plate; 61, male pin seat; 7, round-head pin shaft; 8, nut. DETAILED DESCRIPTION

[0040] The application will be described in greater detail with reference to specific embodiments. The following embodiments are presented by way of example and are not intended to limit the present application in any manner. It should be noted that, for one of ordinary skill in the art, several changes and modifications can be made without departing from the spirit of the present application. These are all within the scope of the present application.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited. In addition, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] As shown in the drawings Figures 1-2As shown, the detachable assembly type beam-column structure includes a prefabricated column 1, an overhanging beam 2, a prefabricated beam 3, an energy dissipation system and a support system. The prefabricated column 1 extends outward at one end to form the overhanging beam 2, the overhanging beam 2 is connected with the prefabricated beam 3 through a stepped mortise-tenon structure, and the energy dissipation system provides seismic energy dissipation capacity. The energy dissipation system is composed of a round-bottom flask-shaped energy dissipation piece 4, a vertical insert 5 and a support plate 6, and the dynamic energy dissipation and detachable function are realized through an adjustable sliding connection and a hinged mechanism.

[0044] Please refer to Figure 3 , which is a structural schematic diagram of the prefabricated column and the overhanging beam of the present application.

[0045] The prefabricated column 1 is made of reinforced concrete, and one end thereof extends outward to form the overhanging beam 2. The beam end of the overhanging beam 2 is designed in a stepped shape, including an overhanging beam upper stepped section 21 (short step) and an overhanging beam lower stepped section 22 (long step), forming a hidden corbel structure.

[0046] The overhanging beam upper stepped section 21 is provided with a round-bottom flask-shaped mortise 21a penetrating through the beam height, and the inner contour thereof is composed of a group of semicircular arcs and a rectangular section extending to the beam end, the width of the rectangular section being the sum of the thicknesses of the vertical insert steel plate 55 and the round-bottom flask-shaped energy dissipation steel plate 41 (as shown in the attached Figure 6 ).

[0047] The overhanging beam lower stepped section 22 is provided with a rectangular mortise 22a penetrating through the stepped opening, the width of the rectangular mortise 22a being equal to the thickness of the first vertical embedded steel plate 51, for accommodating the vertical insert 5.

[0048] Please refer to Figure 4 , which is a structural schematic diagram of the prefabricated beam and the energy dissipation system of the present application. The lapping end of the prefabricated beam 3 is designed in a stepped shape complementary to the overhanging beam 2, including a prefabricated beam upper stepped section 31 (long step) and a prefabricated beam lower stepped section 32 (short step).

[0049] The prefabricated beam upper stepped section 31 is embedded with the first vertical embedded steel plate 51 along the beam center line, and the length of the first vertical embedded steel plate 51 is equal to the overhanging length of the prefabricated beam upper stepped section 31 plus the thickness of the concrete protective layer (≥20 mm).

[0050] The prefabricated beam lower stepped section 32 is embedded with two second vertical embedded steel plates 52 at the end face, which are welded on both sides of the first vertical embedded steel plate 51, and the height of the second vertical embedded steel plate 52 is equal to the overhanging height of the prefabricated beam upper stepped section 31.

[0051] Please refer to Figures 5 to 7, round bottom flask-shaped energy dissipation piece 4: by round bottom flask-shaped energy dissipation steel plate 41 and transverse sliding steel plate 42 are welded together. The geometric shape of the round bottom flask-shaped energy dissipation steel plate 41 includes a set of semicircular arc (radius R=50-80mm) and two sets of mirror image 1 / 4 elliptical arc (major axis a=100-150mm, minor axis b=30-50mm), forming a wide neck energy dissipation structure, the neck width is 1.2-1.5 times the thickness of the vertical insertion steel plate 55 (as shown in the attached Figure 6 ).

[0052] Transverse sliding steel plate 42: two insertion sliding mouth 42b (height H=80-100mm) and a sliding steel plate 42a are arranged in the height direction, the height of the sliding steel plate 42a matches the energy dissipation piece sliding mouth 54, which can be pushed and pulled along the vertical sliding steel plate 53 to adjust the width of the abdomen of the round bottom flask-shaped energy dissipation steel plate 41.

[0053] Vertical insertion piece 5: including first vertical pre-buried steel plate 51, second vertical pre-buried steel plate 52, vertical sliding steel plate 53 and vertical insertion steel plate 55. The vertical sliding steel plate 53 is provided with an energy dissipation piece sliding mouth 54 in the middle, and the vertical insertion steel plate 55 is symmetrically welded with 6 female pin seats 56 on both sides, and the pin hole center line passes through the center of the round bottom flask-shaped energy dissipation steel plate 41 (as shown in the attached Figure 7 ).

[0054] Please refer to Figure 8 , the structure diagram of the support plate, round pin shaft and nut of the application. The end is provided with two sub-pin seats 61, which are hinged with the female pin seat 56 through the round pin shaft 7. The bottom of the round pin shaft 7 is provided with a thread, which is locked by the nut 8. The vertex of the support plate 6 is a circular arc contact surface (the curvature radius is consistent with the abdomen of the energy dissipation steel plate 41), which is supported at the vertex of the abdomen of the round bottom flask-shaped energy dissipation steel plate 41, so as to ensure that the support plate can rotate with the deformation of the energy dissipation piece under pressure.

[0055] The structure will be further described in detail in combination with the assembly and disassembly steps as follows:

[0056] Step 1: weld the vertical insertion piece 5. Weld the first vertical pre-buried steel plate 51 and the second vertical pre-buried steel plate 52 to form the frame of the vertical insertion piece 5, and then weld the vertical sliding steel plate 53 and the vertical insertion steel plate 55, reserving the energy dissipation piece sliding mouth 54.

[0057] Step 2: cast the prefabricated component. Weld the welded vertical insertion piece 5 with the reinforcement cage of the prefabricated beam 3, and pour concrete to form the prefabricated beam 3; at the same time, pour the prefabricated column 1 and the overhanging beam 2, and reserve the round bottom flask-shaped mortise 21a and the rectangular mortise 22a.

[0058] Step 3: Make the energy dissipation component and the support plate. Weld the round-bottom flask-shaped energy dissipation steel plate 41 with the transverse sliding steel plate 42, and weld the female pin seat 56 on the vertical insertion steel plate 55.

[0059] Step 4: Hoist the prefabricated column 1 and the outrigger beam 2, and fix them after positioning.

[0060] Step 5: Install the prefabricated beam 3. Push the transverse sliding steel plate 42 to reduce the width of the abdomen of the round-bottom flask-shaped energy dissipation steel plate 41, align the stepped end of the prefabricated beam 3 with the stepped end of the outrigger beam 2, and embed it into the mortise from top to bottom.

[0061] Step 6: Adjust the energy dissipation component. Pull the transverse sliding steel plate 42 to restore the round-bottom flask-shaped energy dissipation steel plate 41 to its original shape, and completely fill the round-bottom flask-shaped mortise 21a.

[0062] Step 7: Install the support plate 6. Align the male pin seat 61 of the support plate 6 with the female pin seat 56, insert the round head pin shaft 7, and tighten the nut 8 to ensure that the apex of the support plate closely fits the abdomen of the energy dissipation steel plate.

[0063] Step 8: Grouting filling. Inject high-strength grouting material (compressive strength ≥ 50 MPa) into the upper vertical overlapping surface 9, the transverse overlapping surface 10, and the lower vertical overlapping surface 11 of the outrigger beam 2 and the prefabricated beam 3, with a filling thickness of 5-15 mm, to form a rigid connection after solidification.

[0064] Step 9: When disassembling, loosen the nut 8, pull out the round head pin shaft 7, and remove the support plate 6.

[0065] Step 10: Push the transverse sliding steel plate 42 to reduce the width of the abdomen of the energy dissipation component, and vertically lift the prefabricated beam 3 from the mortise of the outrigger beam 2 to achieve non-destructive disassembly.

[0066] Step 11: After replacing the damaged prefabricated beam 3 or energy dissipation component 4, repeat steps 5-8 to reinstall.

[0067] The structure provided in the present application has a round-bottom flask-shaped energy dissipation component with a wide abdomen and a narrow neck, which improves the tensile performance at the disassembling point. Under the action of an earthquake, the energy dissipation component consumes seismic energy through deformation, plays a role in energy dissipation, and improves the energy dissipation capacity of the node core area. Through the disassembling design, the installation of components does not require a large number of on-site tightening of bolts or on-site welding, and the quality of on-site work is controllable. The plastic hinge is moved to the disassembling point, improving the seismic performance of the node core area, and the damage location is transferred from the node core area to the disassembling point and the prefabricated beam, which enables quick replacement of components after an earthquake, reduces the cost of later maintenance and reinforcement, avoids large-scale demolition and reconstruction, and saves energy and reduces emissions, in line with the requirements of green construction throughout the process, and easy to promote and use.

[0068] The specific examples are used in the description of the application to provide a thorough understanding of the application. The above embodiments are only used to help understand the core idea of the application. It should be pointed out that, for those skilled in the art, any obvious modifications, equivalent replacements or other improvements made without departing from the inventive concept should be included in the protection scope of the application.

[0069] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0070] It should be understood that the application is not limited to the precise construction that has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

[0071] It should be understood that "multiple" referred to herein means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. The character " / " generally represents that the associated objects before and after are in an "or" relationship.

[0072] Those of ordinary skill in the art can understand that all or part of the steps of the above-mentioned embodiments can be completed by hardware, or by a program instructing relevant hardware, and the program can be stored in a computer readable storage medium, which can be a read-only memory, a magnetic disk or an optical disk, etc.

[0073] The above is only the preferred embodiment of the application, and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application should be included in the protection scope of the application.

Claims

1. A demountable assembly type beam-column structure, comprising a prefabricated column (1), an outrigger beam (2) and a prefabricated beam (3), characterized in that: the prefabricated column (1) extends outward at one end to form the outrigger beam (2), and the outrigger beam (2) is connected to the prefabricated beam (3) by a energy dissipation system; the energy dissipation system comprises: a round-bottom flask-shaped energy dissipation piece (4), which is fixedly connected by a round-bottom flask-shaped energy dissipation steel plate (41) and a transverse sliding steel plate (42), the geometric shape of the round-bottom flask-shaped energy dissipation steel plate (41) comprises a group of semicircular arcs and two groups of mirror image 1 / 4 elliptical arcs; a vertical insert (5), which comprises a first vertical embedded steel plate (51), a second vertical embedded steel plate (52), a vertical sliding steel plate (53) and a vertical insert steel plate (55), and the vertical sliding steel plate (53) is provided with an energy dissipation piece sliding port (54) in the middle; a support plate (6), which is provided with a sub-pin seat (61) at the end and is hinged to a female pin seat (56) on the vertical insert steel plate (55) by a round head pin shaft (7) ; the transverse sliding steel plate (42) can be pushed and pulled along the vertical sliding steel plate (53) to adjust the width of the abdomen of the round-bottom flask-shaped energy dissipation steel plate (41), and the support plate (6) is supported at the top of the abdomen of the round-bottom flask-shaped energy dissipation steel plate (41). 2.The demountable assembly type beam-column structure according to claim 1, characterized in that: the beam end of the outrigger beam (2) is in a stepped shape, comprising an outrigger beam upper stepped section (21) and an outrigger beam lower stepped section (22), the outrigger beam upper stepped section (21) is a short step and is provided with a round-bottom flask-shaped mortise (21a), and the outrigger beam lower stepped section (22) is a long step and is provided with a rectangular mortise (22a) ; the overlapping end of the prefabricated beam (3) is provided with a stepped structure complementary to the outrigger beam (2), comprising a prefabricated beam upper stepped section (31) and a prefabricated beam lower stepped section (32), the prefabricated beam upper stepped section (31) is a long step, and the prefabricated beam lower stepped section (32) is a short step; the superimposed surface of the outrigger beam (2) and the prefabricated beam (3) comprises an upper vertical superimposed surface (9), a transverse superimposed surface (10) and a lower vertical superimposed surface (11), and the upper vertical superimposed surface (9), the transverse superimposed surface (10) and the lower vertical superimposed surface (11) are filled with grouting material. 3.The demountable assembly type beam-column structure according to claim 2, characterized in that: the minimum width of the neck of the round-bottom flask-shaped mortise (21a) is the sum of the thicknesses of the vertical insert steel plate (55) and the round-bottom flask-shaped energy dissipation steel plate (41) ; the width of the rectangular mortise (22a) is equal to the thickness of the first vertical embedded steel plate (51), and the height and length thereof penetrate the stepped port of the outrigger beam lower stepped section (22). 4.The demountable assembly type beam-column structure according to claim 1, characterized in that: the transverse sliding steel plate (42) is provided with two insert sliding ports (42b) and a sliding steel plate (42a) in the height direction, the insert sliding port (42b) is slidingly matched with the vertical sliding steel plate (53), and the sliding steel plate (42a) is slidingly matched with the energy dissipation piece sliding port (54). ​ ​ ​ ​ ​ ​ ​ The bottom of the round-bottom flask-shaped energy dissipation steel plate (41) and the end of the vertical insertion steel plate (55) are reserved with a deformation space with a spacing of 10-30 mm.

5. The demountable assembly type beam-column structure according to claim 1, characterized in that: In the vertical insertion piece (5), the height of the first vertical embedded steel plate (51) is equal to the beam height of the precast beam (3), and the height of the second vertical embedded steel plate (52) is equal to the overhanging height of the precast beam upper stepped section (31); The female pin seat (56) is symmetrically arranged on both sides of the vertical insertion steel plate (55), and the center line passes through the center of the round-bottom flask-shaped energy dissipation steel plate (41).

6. The demountable assembly type beam-column structure according to claim 5, characterized in that: The pin hole diameter of the female pin seat (56) and the male pin seat (61) is equal, and the bottom of the round head pin shaft (7) is provided with a thread, which is locked by a nut (8); The contact surface between the support vertex of the support plate (6) and the abdominal vertex of the round-bottom flask-shaped energy dissipation steel plate (41) is a circular arc with a curvature radius consistent with the curvature of the abdominal part of the energy dissipation steel plate.

7. The demountable assembly type beam-column structure according to claim 1, characterized in that: The minimum width of the neck of the round-bottom flask-shaped energy dissipation steel plate (41) is 1.2-1.5 times the thickness of the vertical insertion steel plate (55), and the maximum width of the abdominal part is 3-4 times the width of the neck; The ratio of the long semi-axis to the short semi-axis of the 1 / 4 elliptical arc is 2:1 to 3:

1.

8. The demountable assembly type beam-column structure according to claim 2, characterized in that: The compressive strength of the grouting material is not less than 1.2 times the concrete strength of the precast beam (3); and the filling thickness of the grouting material of the upper vertical laminated surface (9), the transverse laminated surface (10) and the lower vertical laminated surface (11) is 5-15 mm.

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