A prefabricated building beam-column connection node

Abstract

The present invention relates to the field of prefabricated buildings, and specifically refers to a prefabricated building beam-column connection node, including a column connection member, a wave member, a support member, a support steel bar matrix, a beam connection member, a vertical baffle, a horizontal baffle, and a cover plate; the cover plate, the column connection member, the wave member, and the support member are connected by high-strength bolts; the wave member is connected to the column connection member by high-strength bolts; the wave member is provided with two vertical circular arc grooves; the support steel bar matrix passes through the support member and is connected to the beam connection member, and the through hole on the support member for the support steel bar matrix to pass through is a trumpet-shaped through hole; displaceable horizontal baffles and vertical baffles are respectively provided above, below, and on both sides of the support steel bar matrix, and the support steel bar matrix can be displaced relative to the circular arc groove under the action of external force, and reset under the action of the horizontal baffle and the vertical baffle. The support steel bar matrix of the present invention can be displaced 360 degrees relative to the wave member and can be reset by itself.

Description

Technical Field

[0001] The present invention relates to the field of prefabricated buildings, and in particular to self-resetting connection nodes of beams and columns of prefabricated buildings. Background Art

[0002] There are a large number of column-beam connection nodes in prefabricated buildings. In order to meet the earthquake resistance requirements, the column-beam connection nodes need to consume a certain amount of earthquake impact force, and after the earthquake impact force, they can reset themselves to improve the earthquake resistance.

[0003] Chinese patent 201911189452.8 discloses a modularized self-resetting concrete frame low-damage node with energy-absorbing parts, which uses a soft steel damper combined with a column-beam connection node structure to achieve relative left-right shaking of the column and beam to dissipate the earthquake impact force. The structure is simple and easy to use, but it still has certain disadvantages. It can only meet the needs of reducing lateral impact forces, but cannot reduce longitudinal impact forces. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a column-beam connection node which can self-reset, the connection node can reduce the lateral impact force and the longitudinal impact force, and can self-reset.

[0005] In response to the above technical problems, the technical solution provided by the present invention is a prefabricated building beam-column connection node, including a column connection member, a wave member, a support member, a support steel bar matrix, a beam connection member, a vertical baffle, a horizontal baffle, and a cover plate; the column connection member is connected to a column support member connected to a column body, the column connection member, the wave member and the support member can be movably arranged on a horizontal support table of the column support member, and the cover plate is arranged on the periphery of the column connection member, the wave member and the support member; the wave member is connected to the column connection member by a high-strength bolt; one end of the support steel bar matrix passes through the support member and is fixedly connected to the beam connection member, and the through hole on the support member for the support steel bar matrix to pass through is a trumpet-shaped through hole , a universal ball is connected to the other end of the support steel bar matrix; vertical arc-shaped grooves are respectively arranged at each column position of the wave component corresponding to the support steel bar matrix, and the universal balls are respectively abutted against the arc-shaped grooves; a limited position structure is arranged on the support steel bar matrix on one side of the universal ball; elastic horizontal baffles are respectively arranged above and below the support steel bar matrix, and elastic vertical baffles are arranged on both sides of the support steel bar matrix; the cover plate, column connecting member, wave member and the side wall of the support member are connected and fixed by horizontal high-strength bolts, and the top of the cover plate and the horizontal supporting table of the column support are connected and fixed by vertical high-strength bolts; the horizontal baffle is penetrated on the vertical high-strength bolts, and the vertical baffle is penetrated on the horizontal high-strength bolts.

[0006] Preferably, a spring is sleeved on the high-strength bolt between the wave member and the column connecting member.

[0007] Preferably, the column connecting member, the wave member and the supporting member are inverted U-shaped structures; the wave member and the column connecting member are arranged in the same direction, and the wave member is located in the column connecting member, and the supporting member and the column connecting member are arranged in the opposite direction; the through hole in the wave member for the horizontal high-strength bolt to pass through is an oblong hole.

[0008] Preferably, the two side walls of the supporting member are respectively located between the two side walls of the column connecting member and the wave member.

[0009] Preferably, a spring is sleeved on the horizontal high-strength bolts between the vertical baffles located on both sides of the supporting steel bar matrix and the two side walls of the wave component. Under normal working conditions, the spring is in a natural state or a slightly compressed state.

[0010] Preferably, springs are respectively mounted on the vertical high-strength bolts between the horizontal baffle plate and the top of the cover plate above the supporting steel bar matrix, and between the horizontal baffle plate and the horizontal supporting table surface of the column support member below the supporting steel bar matrix, and two ends of the springs are respectively against the horizontal baffle plate and the top of the cover plate, and the horizontal baffle plate and the horizontal supporting table surface of the column support member; under normal working conditions, the springs are in a natural state or a slightly compressed state.

[0011] Preferably, the support steel bar matrix includes several support steel bars arranged in a matrix of at least two columns and multiple rows, one end of the support steel bar passes through the support member and is fixedly connected to the beam connecting member, and the other end is threadedly connected to a connecting sleeve to form the limiting structure, and one end of the universal ball is threadedly connected to the connecting sleeve.

[0012] Preferably, an elastic member is provided between the supporting member and the beam connecting member, and the elastic member is passed through the supporting steel bar matrix.

[0013] Preferably, the elastic member is a rubber pad or a spring.

[0014] The self-resetting column-beam connection node of the present invention can support the steel bar matrix to swing 360 degrees relative to the wave component, can withstand earthquake impact forces in all directions, and can reset itself and buffer and reduce the impact force. When the earthquake impact force disappears, the column-beam connection node can reset itself under the action of elastic force and the arc-shaped groove structure of the wave component, thereby improving the earthquake resistance of the column-beam connection node. The main beam connection node of the present invention has a relatively simple structure and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the top view structure of the connection node of the present invention.

[0016] Figure 2 It is a schematic diagram of the longitudinal section structure of the connection node of the present invention.

[0017] Figure 3 It is a schematic diagram of the front view of the beam end structure.

[0018] Figure 4 It is a schematic diagram of the cover structure. DETAILED DESCRIPTION

[0019] According to the above technical solution, see Figures 1 to 4 , a preferred embodiment is now given and will be specifically described with reference to the drawings.

[0020] The column-beam connection node of the present invention mainly includes a column connection member 10, a wave member 20, a support member 30, a support steel bar matrix 40, a beam connection member 50, a vertical baffle 60, a horizontal baffle 70, and a cover plate 80. The above components are all made of steel. Among them:

[0021] The column connecting member 10 is an inverted U-shaped structure with one end open, and the open end faces the beam end. The column connecting member 10 is connected to a column support member (not shown) by high-strength bolts. The column can be a prefabricated column or a steel column, and the column support member can be embedded in the prefabricated column or fixed on the steel column, and the column support member is used to position and support the column connecting member 10. The column support member has an L-shaped structure, with a horizontal support table and a vertical fixed end plate. The fixed end plate is embedded in the prefabricated column or connected and fixed to the steel column, and the horizontal support table supports the column connecting member 10. In order to better fix, two vertical side wall panels can be set on the horizontal support table to form an installation space.

[0022] The wave member 20 is an inverted U-shaped structure with one end open, and the open end faces the beam end. The wave member 20 is located in the column connection member 10, and an installation gap is reserved between the wave member 20 and the column connection member 10. The column connection member 10 and the wave member 20 facing the beam end are connected and fixed by high-strength bolts 11. Springs 12 are respectively sleeved on both ends of the high-strength bolts 11 between the wave member 20 and the column connection member 10 and on the outside of the column connection member 10 and the wave member 20. In this example, the spring 12 is a plurality of butterfly spring washers stacked.

[0023] The surface of the wave component 20 facing the beam end is set as a wave structure 21. The wave structure 21 is arranged along the horizontal transverse direction, that is, the troughs and crests of the wave structure 21 are arranged vertically and pass through the upper end surface of the wave component 20. The troughs of the wave structure 21 are arc-shaped groove structures, and the structures of each trough are the same. Through holes for high-strength bolts to pass through are respectively opened on the two side walls of the column connecting component 10 and the wave component 20. The through holes on the two side walls of the wave component 20 are horizontal oblong holes. When the wave component 20 is subjected to external force, it can be displaced relative to the column connecting component 10.

[0024] The beam connection member 50 can be pre-embedded at the end of the prefabricated beam, or connected to the steel beam structure by bolts. The side of the beam connection member 50 close to the column is a flat plate structure, and the support steel bar matrix 40 is fixed to the beam connection member 50 by welding. The support steel bar matrix 40 includes a plurality of support steel bars 41. In this embodiment, there are 6 support steel bars 41, which are arranged in a matrix of three rows and two columns, and each support steel bar 41 is provided with an external thread at its free end.

[0025] The support member 30 is an inverted U-shaped structure with one side open, and the open end of the support member faces the column side. The support member 30 is connected to the column connecting member 10 and the wave member 20, and the two side walls of the support member 30 are respectively located between the two side walls of the column connecting member 10 and the wave member 20. Through holes are also provided on the two side walls of the support member 30 relative to the through holes of the column connecting member and the wave member for high-strength bolts to pass through. The column connecting member 10, the wave member 20 and the support member 30 are respectively arranged in a contact manner on the horizontal support table of the column support member, and an upward supporting force is provided by the horizontal support table. An accommodating space is formed between the wave member 20 and the support member 30. When the column support member is provided with two side walls, the column connecting member 10 is placed in the column support member, and the two side walls of the column support member are also correspondingly provided with through holes for high-strength bolts to pass through.

[0026] The support steel bar matrix 40 passes through the support member 30, and the support member 30 provides an upward support force to the support steel bar matrix 40. The through hole 31 on the support member 30 through which the support steel bar matrix 40 passes is a trumpet-shaped hole, and the large-diameter end of the through hole 31 is located on the beam connection member 50 side.

[0027] The free end of each support steel bar in the support steel bar matrix 40 is located in the accommodation space formed by the wave member and the support member. An external thread is arranged on the outer periphery of the free end of each support steel bar 41 in the support steel bar matrix 40. A connecting sleeve 42 is threadedly connected to the outer periphery of the free end of the support steel bar 41, and the connecting sleeve 42 is made of steel. The length of the external thread of the free end of the support steel bar 41 is relatively long. When the connecting sleeve is sleeved and connected to the support steel bar 41, the connection length between the connecting sleeve and the support steel bar is lengthened, which can improve the supporting strength of the connecting sleeve.

[0028] One end of the connecting sleeve 42 abuts against the side of the supporting member 30 to form a limiting structure to prevent the supporting steel bar 41 from falling out of the supporting member 30. The universal ball 43 is located at the free end of the connecting sleeve 42. The universal ball 43 is rotatably arranged on a universal ball seat, and a screw with an external thread is fixedly connected to the universal ball seat, and the screw of the universal ball seat is threadedly connected to the other end of the connecting sleeve 42.

[0029] The universal balls 43 supporting the free ends of the steel bar matrix 40 abut against the troughs on the wave structure 20 . One row of universal balls is arranged in the same trough, and two rows of universal balls are arranged in different troughs.

[0030] An elastic member 51 is provided between the support member 30 and the beam connection member 50. The elastic member 51 may be a rubber pad provided on the support steel bar matrix 40, or a spring provided on each support steel bar 41.

[0031] The cover plate 80 is an inverted U-shaped structure, with its open end facing the horizontal support table of the column support. The cover plate 80 is arranged on the column support, and its top is located above the column support, the column connecting member, the wave member and the support member. The two side walls of the cover plate 80 are respectively located outside the two side walls of the column connecting member. When the column support has two side walls, the cover plate 80 is located outside the two side walls of the column support. The cover plate 80 is provided with a through hole for high-strength bolts to pass through at the position of the through hole of the column connecting member, and through holes for high-strength bolts to pass through are also provided on its top and the horizontal support table of the column support.

[0032] The vertical baffle 60 is a flat plate structure. Vertical baffles 60 are respectively arranged on both sides of the support steel bar matrix 40, and the two ends of the vertical baffle 60 extend out of the upper and lower sides of the support steel bar matrix 40 respectively for the horizontal high-strength bolts to pass through. The horizontal high-strength bolts 81 pass through the cover plate 80, the column connection member, the support member, the wave member, and the vertical baffle to connect and fix the cover plate, the column connection member, the support member, and the wave member. Several horizontal high-strength bolts 81 are arranged at intervals, and the horizontal high-strength bolts 81 are respectively arranged between the rows, above, and below the support steel bar matrix 40. Springs 82 are sleeved on the horizontal high-strength bolts 81 between the vertical baffle 60 and the wave member 20. The two ends of the spring 82 are respectively against the vertical baffle 60 and the wave member 20. Under normal working conditions, the spring 82 is in a natural state or a slightly compressed state. When the vertical baffle 60 is subjected to external force, the spring 82 can be compressed or further compressed. In the slightly compressed state, the spring 82 is subjected to a slight pressing force, but when the squeezing force increases, the spring 82 will continue to be compressed.

[0033] The horizontal baffle 70 is a flat plate structure. The horizontal baffles 70 are respectively arranged above and below the support steel bar matrix 40, and the two ends of the horizontal baffle 70 extend out of the two sides of the support steel bar matrix 40. The vertical high-strength bolts 83 pass through the top of the cover plate 80, the horizontal baffle 70 and the horizontal support table of the column support member, and then fix the cover plate 80 on the column connecting member and the column support member to form a limit on the column connecting member and the support member. Springs 84 are respectively sleeved on the vertical high-strength bolts 83 between the horizontal baffle 70 and the top of the cover plate, and between the horizontal baffle 70 and the horizontal support table of the column support member. Under normal working conditions, the spring 84 is in a natural state or a slightly compressed state. When the horizontal baffle 70 is subjected to external force, the spring 84 can be compressed or further compressed. In the slightly compressed state, the spring 84 is subjected to a slight resistance force, but when the extrusion force increases, the spring 84 will continue to be compressed.

[0034] Before installation, the column connection member 10 is first fixedly connected to the column support, and then the wave member 20 is connected to the column connection member 10 by high-strength bolts. The column connection member 10 and the wave member 20 are supported by the horizontal support table of the column support. The elastic member 51 and the support member 30 are respectively passed through the support steel bar matrix 40, and then the connecting sleeve 42 and the universal ball 43 are connected to the support steel bar matrix 40. The connecting sleeve 42 positions the support member 30. Then the beam-column connection node is assembled together and fixed by high-strength bolts.

[0035] When an earthquake occurs and the main beam connection node is impacted, the universal ball 43 of the support steel bar matrix 40 will swing along the arc-shaped groove of the wave trough. During the swinging process, the trumpet-shaped through hole on the support member gives the support steel bar matrix a certain displacement angle. The universal ball 43 of the support steel bar matrix 40 squeezes the wave member 20, and the spring 12 between the wave member and the column connection member is squeezed, forcing the wave member to move toward the column connection member. At the same time, when the support steel bar matrix 40 swings, the springs (82, 84) at the squeezed horizontal baffle and vertical baffle are also squeezed and compressed. The elastic force generated by the compression of the spring 12 and the spring (82, 84), and the displacement of the wave member, the horizontal baffle and the vertical baffle buffer the impact force generated by the earthquake, and the earthquake impact force is reduced by the elastic force. When the spring elastic force increases to be greater than the impact force or the impact force disappears, the wave member, the horizontal baffle and the vertical baffle are reversely displaced and reset under the action of the elastic force, driving the support steel bar matrix to reset, thereby driving the beam structure to reset.

[0036] In order to ensure self-reset, the width, depth and curvature of the arc-shaped groove are such that the universal ball at the front end of the supporting steel bar matrix is ​​still in the trough when the supporting steel bar matrix has the maximum design swing angle.

[0037] In the above technical solution, the wave component adopts a trough and crest structure. According to the number of columns of the matrix of the supporting steel bar matrix, a vertical arc-shaped groove can be set on the wave component only at the position corresponding to the universal ball of the supporting steel bar of the supporting steel bar matrix. The width, depth and curvature of the arc-shaped groove are determined according to the earthquake energy design. One end of the arc-shaped groove passes through the upper end surface of the wave component. With such a structure, it is convenient to place the supporting steel bar matrix from the top of the wave component downward for installation.

Claims

1. A prefabricated building beam-column connection node, characterized in that: It includes a column connection member, a wave member, a support member, a support steel bar matrix, a beam connection member, a vertical baffle, a horizontal baffle, and a cover plate; the column connection member is connected to a column support member connected to a column body, the column connection member, the wave member, and the support member can be movably arranged on a horizontal support table of the column support member, and the cover plate is arranged on the periphery of the column connection member, the wave member, and the support member; the wave member is connected to the column connection member by high-strength bolts; One end of the support steel bar matrix passes through the support member and is fixedly connected to the beam connecting member. The through hole on the support member for the support steel bar matrix to pass through is a trumpet-shaped through hole, and the other end of the support steel bar matrix is ​​connected to a universal ball; vertical arc-shaped grooves are respectively arranged at each column position of the wave member corresponding to the support steel bar matrix, and the universal balls are respectively abutted against the arc-shaped grooves; a limited position structure is arranged on the support steel bar matrix located on one side of the universal ball; elastic horizontal baffles are respectively arranged above and below the support steel bar matrix, and elastic vertical baffles are arranged on both sides of the support steel bar matrix; the cover plate, column connecting member, wave member and the side wall of the support member are connected and fixed by horizontal high-strength bolts, and the top of the cover plate and the horizontal supporting table of the column support are connected and fixed by vertical high-strength bolts; the horizontal baffle is penetrated on the vertical high-strength bolts, and the vertical baffle is penetrated on the horizontal high-strength bolts.

2. The assembled building beam-column connection node according to claim 1, characterized in that: A spring is sleeved on the high-strength bolt between the wave component and the column connecting component.

3. The assembled building beam-column connection node according to claim 1, characterized in that: The column connecting member, the wave member and the supporting member are in an inverted U-shaped structure; the wave member and the column connecting member are arranged in the same direction and the wave member is located in the column connecting member, and the supporting member and the column connecting member are arranged in the opposite direction; the through hole in the wave member for the horizontal high-strength bolt to pass through is an oblong hole.

4. The assembled building beam-column connection node according to claim 3, characterized in that: The two side walls of the supporting member are respectively located between the two side walls of the column connecting member and the wave member.

5. The assembled building beam-column connection node according to claim 4, characterized in that: Springs are sleeved on the horizontal high-strength bolts between the vertical baffles located on both sides of the supporting steel bar matrix and the two side walls of the wave component. Under normal working conditions, the springs are in a natural state or a slightly compressed state.

6. The assembled building beam-column connection node according to claim 1, characterized in that: Springs are respectively mounted on vertical high-strength bolts between the horizontal baffle plate and the top of the cover plate above the support steel bar matrix, and between the horizontal baffle plate and the horizontal support table surface of the column support member below the support steel bar matrix, and two ends of the springs are respectively against the top of the horizontal baffle plate and the cover plate, and the horizontal baffle plate and the horizontal support table surface of the column support member; under normal working conditions, the springs are in a natural state or a slightly compressed state.

7. The assembled building beam-column connection node according to claim 1, characterized in that: The support steel bar matrix includes several support steel bars arranged in a matrix of at least two columns and multiple rows. One end of the support steel bar passes through the support member and is fixedly connected to the beam connecting member, and the other end is threadedly connected to a connecting sleeve to form the limiting structure. One end of the universal ball is threadedly connected to the connecting sleeve.

8. The assembled building beam-column connection node according to claim 1, characterized in that: An elastic member is arranged between the supporting member and the beam connecting member, and the elastic member is passed through the supporting steel bar matrix.

9. The assembled building beam-column connection node according to claim 8, characterized in that: The elastic member is a rubber pad or a spring.

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