Connecting joint device and construction method

Abstract

The invention discloses a connecting joint device and a construction method, and relates to the technical field of building construction.The connecting joint device comprises a first bearing part, a second bearing part, a third bearing part and a fourth bearing part, the first bearing part and the second bearing part are arranged in a spaced mode in the first direction, and the third bearing part and the fourth bearing part are arranged in a spaced mode in the second direction; and / or, the third bearing part and the fourth bearing part are connected through a bearing assembly, and a part of the bearing assembly is buried in the first post-pouring area; at least one group of two adjacent structures in the first bearing part, the second bearing part, the third bearing part and the fourth bearing part are connected through the energy dissipation assembly, so that under the earthquake action, when a load is transmitted to the energy dissipation assembly, the area, close to the energy dissipation assembly, of the connecting joint and the energy dissipation assembly generate plastic deformation before the connecting joint, and a plastic hinge is forced to be formed in the area; therefore, the plastic hinge at the connecting joint moves outwards, and the risk that the connecting joint cracks and collapses due to the plastic hinge is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a connection node device and a construction method. Background Art

[0002] Beam-column joints are critical components of buildings such as prefabricated concrete structures. They simultaneously withstand bending moments and shear forces from the beam ends, as well as axial forces and shear forces from the column ends. This creates a compound stress state of bidirectional bending moment, shear force, and compression. Therefore, the reliability of these joints determines the seismic resistance and quality of the overall structure. However, existing joints in buildings such as prefabricated concrete structures struggle to meet these requirements, resulting in poor stability and seismic resistance.

[0003] Therefore, how to improve the strength and stiffness of the connection nodes and then improve the stability and earthquake resistance of the building has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0004] The purpose of the present invention is to provide a connection node device and a construction method to improve the strength and rigidity of the connection nodes, thereby improving the stability and earthquake resistance of the building.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a connection node device, the connection node device comprising:

[0007] A first load-bearing member and a second load-bearing member are spaced apart along a first direction, and a third load-bearing member and a fourth load-bearing member are spaced apart along a second direction, wherein an angle A is formed between the first direction and the second direction, 0<A≤90°, and a first post-pouring area for pouring slurry is formed between the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member;

[0008] A bearing assembly, wherein the first bearing member and the second bearing member are connected via the bearing assembly, and / or the third bearing member and the third bearing member are connected via the bearing assembly; and a portion of the bearing assembly is buried in the first post-casting area;

[0009] Energy-absorbing component, at least two adjacent structures among the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member are connected through the energy-absorbing component.

[0010] Preferably, the bearing assembly includes a plurality of first reinforcement members and a plurality of second reinforcement members embedded in at least one of the first load-bearing member, the second load-bearing member, the third load-bearing member, and the fourth load-bearing member, and the first reinforcement members and the second reinforcement members are arranged in different directions and connected;

[0011] And / or, the bearing assembly includes a plurality of third reinforcement members and a plurality of fourth reinforcement members buried in the first post-casting area, and the third reinforcement members and the fourth reinforcement members are arranged in different directions and connected.

[0012] Preferably, one end of the first load-bearing member and / or the second load-bearing member extends into the first first post-casting area and is connected to the third reinforcement member;

[0013] And / or, the first reinforcement member of the first load-bearing member is connected to the first reinforcement member in the second load-bearing member.

[0014] Preferably, the first reinforcement member in the first load-bearing member and the first reinforcement member in the second load-bearing member are bolted, threaded or welded.

[0015] Preferably, the connection node device also includes a post-pouring section which is provided on at least one of the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member and is connected to the first post-pouring area and is used for pouring slurry.

[0016] Preferably, one end of the first load-bearing member facing the first post-casting area, one end of the third load-bearing member facing the first load-bearing member, and one end of the fourth load-bearing member facing the first load-bearing member are all provided with the post-casting section connected to the first post-casting area.

[0017] Preferably, at least two adjacent structures among the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member are respectively connected to the two ends of the energy-absorbing component, and the stiffness of the two ends of the energy-absorbing component is greater than the stiffness of the middle area of the energy-absorbing component; and / or, the energy-absorbing component includes an energy-absorbing plate, and a plurality of energy-absorbing areas are provided on the middle area of the energy-absorbing plate.

[0018] Preferably, the energy dissipation area includes a hollow portion provided on the energy dissipation plate; or, the cross section of the energy dissipation plate gradually decreases from both ends toward the middle of the energy dissipation plate.

[0019] Preferably, the energy dissipation plate is obliquely provided between the second load-bearing member and the third load-bearing member, and the energy dissipation plate is obliquely provided between the second load-bearing member and the fourth load-bearing member.

[0020] In addition, the present invention also provides a construction method using the above-mentioned connection node device, the construction method comprising:

[0021] Step S1, prefabricating the first load-bearing member, the second load-bearing member, the third load-bearing member, the fourth load-bearing member, the load-bearing assembly and the energy-consuming assembly;

[0022] Step S2, assembling the first load-bearing member, the second load-bearing member, the third load-bearing member, and the fourth load-bearing member, and connecting the first load-bearing member and the second load-bearing member through the load-bearing assembly, and / or connecting the third load-bearing member and the fourth load-bearing member through the load-bearing assembly;

[0023] Step S3, pouring slurry into the first post-pouring area, and after the first post-pouring area is solidified and formed, pouring slurry into the post-pouring section connected to the first post-pouring area on at least one of the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member.

[0024] Compared with the prior art, the present invention has achieved the following technical effects:

[0025] The connection node device in the present invention includes a first load-bearing member and a second load-bearing member arranged at intervals along a first direction, and a third load-bearing member and a fourth load-bearing member arranged at intervals along a second direction. The angle between the first direction and the second direction is A, 0<A≤90°, which means that the load-bearing members arranged along two different directions in the present invention can be used as "beams" and "columns" respectively and form a connection node; and the first load-bearing member and the second load-bearing member are connected by a load-bearing component, and / or the third load-bearing member and the fourth load-bearing member are connected by a load-bearing component. The load-bearing component improves the connection strength between the first load-bearing member and the second load-bearing member, and / or the third load-bearing member and the fourth load-bearing member. Moreover, since part of the load-bearing component is buried in the first post-casting area, compared with the method in which the load-bearing component is connected to the first post-casting area only by fasteners such as bolts, this increases the bonding area between the load-bearing component and the slurry in the first post-casting area, improves the connection strength and stiffness between the first post-casting area and the first load-bearing member, the second load-bearing member, and / or the third load-bearing member, the fourth load-bearing member, and thereby improves the strength and stiffness at the connection node;

[0026] Furthermore, at least one set of adjacent two structures among the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member is connected by an energy-absorbing component. Since the energy-absorbing component is arranged between adjacent load-bearing members, the connection strength and stiffness between the adjacent load-bearing members are improved, and compared with the first to fourth load-bearing members, the stiffness and strength of the energy-absorbing component are lower. Therefore, when the load generated by external forces such as earthquakes is transmitted to the connection node device, the area of the connection node close to the energy-absorbing component and the area of the energy-absorbing component away from the energy-absorbing component before the connection node undergo plastic deformation, forcing the formation of a plastic hinge here (a plastic hinge refers to a cross-section at a certain point in the structure). The bending moment on the beam reaches the plastic limit bending moment, and thus rotation occurs, which indicates that the local area of the structure has entered the plastic state and will continue to undergo greater deformation and damage). This causes the plastic hinges that are easily generated at the beam-column connection nodes in the prior art to move outward, reducing the risk of cracking and collapse of buildings using the connection node device of the present invention due to plastic hinges at the beam-column connection nodes, further improving the stiffness and strength of the buildings using the connection node device of the present invention at the beam-column connection nodes, and improving the bearing capacity, stability and seismic resistance of the buildings using the connection node device of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 is a front view of the connection node device;

[0029] Figure 2 is a perspective view of a connection node device;

[0030] Figure 3 for Figure 1 AA cross-section of

[0031] Figure 4 for Figure 1 BB cross-section diagram;

[0032] Figure 5 for Figure 1 CC cross-section diagram;

[0033] Figure 6 Schematic diagram of the structure of the first load-bearing member;

[0034] Figure 7 is a structural schematic diagram of the second load-bearing member;

[0035] Figure 8Schematic diagram of the structure of the third load-bearing member and the fourth load-bearing member;

[0036] Figure 9 Schematic diagram of the structure of the first post-casting area and the post-casting section;

[0037] Figure 10 A schematic structural diagram of a first carrier and a second carrier;

[0038] Figure 11 It is a structural diagram of the energy consumption board;

[0039] Figure 12 Schematic diagram of the structure of the first longitudinal reinforcement and the connecting sleeve;

[0040] Figure 13 Schematic diagram of the structure of the connecting sleeve;

[0041] Figure 14 Schematic diagram of the mold structure.

[0042] Among them, 1. First load-bearing member; 2. Fourth load-bearing member; 3. Post-casting section; 4. Post-casting area; 5. Energy dissipation component; 6. First longitudinal reinforcement; 7. First stirrup; 8. Fourth longitudinal reinforcement; 9. Second stirrup; 10. Second longitudinal reinforcement; 11. Connecting sleeve; 12. Third stirrup; 13. Third longitudinal reinforcement; 14. Load-bearing assembly; 15. Fixing plate; 16. Wedge plate; 17. Anchor; 18. Second load-bearing member; 19. First load-bearing member; 20. Screw; 21. Second load-bearing member; 22. First connecting hole; 23. Second connecting hole; 24. First fastener; 25. Overlap section; 26. Energy dissipation plate; 27. Oblong hole; 28. First mounting hole; 29. Second fastener; 30. Third fastener; 31. Fixing member; 32. Positioning member; 33. Bending section; 34. First support plate; 35. Third support plate; 36. Reinforcement plate; 37. Second support plate. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] like Figures 1 to 14As shown, the present invention discloses a connection node device, which includes a first load-bearing member 1 and a second load-bearing member 21 spaced apart along a first direction, and a third load-bearing member and a fourth load-bearing member 2 spaced apart along a second direction. The angle between the first direction and the second direction is A, 0<A≤90°, which means that the load-bearing members arranged along two different directions in the present invention can be used as "beams" and "columns" respectively and form a connection node; and the first load-bearing member 1 is connected to the second load-bearing member 21 through a bearing assembly 14, and / or the third load-bearing member and the fourth load-bearing member 2 are connected through the bearing assembly 14 The bearing assembly 14 improves the connection strength between the first load-bearing member 1 and the second load-bearing member 21, and / or the third load-bearing member and the fourth load-bearing member 2, and because part of the bearing assembly 14 is buried in the first post-casting area, compared with the manner in which the bearing assembly 14 is connected to the first post-casting area only by fasteners such as bolts, this increases the bonding area between the bearing assembly 14 and the slurry in the first post-casting area, improves the connection strength and stiffness between the first post-casting area and the first load-bearing member 1, the second load-bearing member 21, and / or the third load-bearing member, the fourth load-bearing member 2, and thereby improves the strength and stiffness at the connection nodes;

[0046] Furthermore, at least one set of adjacent two structures among the first load-bearing member 1, the second load-bearing member 21, the third load-bearing member and the fourth load-bearing member 2 is connected by the energy-absorbing component 5. Since the energy-absorbing component 5 is arranged between the adjacent load-bearing members, the connection strength and rigidity between the adjacent load-bearing members are improved. Moreover, compared with the first to fourth load-bearing members, the rigidity and strength of the energy-absorbing component 5 are lower. Therefore, when the load generated by the external force such as an earthquake is transmitted to the connection node device, the area of the connection node close to the energy-absorbing component 5 and the area of the energy-absorbing component 5 away from the energy-absorbing component 5 before the connection node undergo plastic deformation, forcing the plastic hinge to be formed here (the plastic hinge refers to the area of the connection node). The bending moment on a certain section of the structure reaches the plastic limit bending moment, and thus rotation occurs, which indicates that the local area of the structure has entered the plastic state and will continue to undergo greater deformation and damage). This causes the plastic hinges that are easily generated at the beam-column connection nodes in the prior art to move outward, reducing the risk of cracking and collapse of buildings using the connection node device of the present invention due to plastic hinges at the beam-column connection nodes, further improving the stiffness and strength of the buildings using the connection node device of the present invention at the beam-column connection nodes, and improving the bearing capacity, stability and seismic resistance of the buildings using the connection node device of the present invention.

[0047] Among them, the first bearing member 1 and the second bearing member 21 form a "column", and the third bearing member and the fourth bearing member 2 form a "beam". According to the working condition requirements, the first bearing member 1, the second bearing member 21, the third bearing member, and the fourth bearing member 2 can be different types of structures such as steel structures or concrete structures. When the first to fourth bearing members 2 are concrete structures, the first bearing member 1 can be called the first precast column, the second bearing member 21 can be called the second precast column, and the third bearing member and the fourth bearing member 2 can be respectively called the first precast beam and the second precast beam; similarly, according to requirements, the included angle A between the first direction and the second direction can be 90°, or 0 < A < 90°. Figures 1 to 14 In the structure shown in Figures 1 to 14 , A = 90°. The first post-cast area can be used to pour slurries such as concrete that can improve the strength and stiffness of the joint. Figures 1 to 14 The post-cast area 4 shown in Figures 1 to 14 not only includes the first post-cast area at the beam-column joint, but also includes two post-cast segments provided at one end of the third bearing member and the fourth bearing member 2 facing the first bearing member 1.

[0048] The bearing assembly 14 includes a plurality of first strengthening members and a plurality of second strengthening members at least buried in one of the first bearing member 1, the second bearing member 21, the third bearing member, and the fourth bearing member 2. The first strengthening members and the second strengthening members are arranged in different directions and are connected. The first strengthening members and the second strengthening members being arranged in different directions means that the first strengthening members and the second strengthening members are not arranged in the same direction and are not parallel. The first strengthening members and the second strengthening members can be arranged in different directions as needed, and the included angle between them can also be adjusted as needed. The included angle between the first strengthening members and the second strengthening members is B, 0 < B ≤ 90°; this enables the first strengthening members and the second strengthening members to form a spatial framework to withstand tensile forces and stresses from multiple directions, thereby improving the stability of the first bearing member 1 and the connection node device. The first strengthening members and the second strengthening members can be steel structures as needed, such as steel bars or steel plates, etc., or made of other materials that can improve the stiffness and strength of the first bearing member 1 into different structural shapes, such as plate-shaped or strip-shaped structures made of carbon fiber or glass fiber.

[0049] As Figure 2 shown, a plurality of first strengthening members arranged longitudinally along the first bearing member 1 are buried in the first bearing member 1 (in the figure, four first strengthening members are respectively arranged near the four corners of the first bearing member 1). The first strengthening members can specifically be steel bars and can be called the first longitudinal bars 6. A plurality of second strengthening members sleeved outside the first strengthening members are also buried at intervals longitudinally in the first bearing member 1. The second strengthening members are annular and can be called the first stirrups 7. The connection between the first strengthening members and the second strengthening members can be connection methods such as welding or tying.

[0050] As Figures 2-3 、 Figure 7 、 Figure 9As shown, the first and second reinforcement members within the second load-bearing member 21 are arranged in the same manner as those within the first load-bearing member 1: a plurality of first reinforcement members, or first longitudinal bars 6, corresponding to the first reinforcement members of the first load-bearing member 1, are embedded longitudinally within the second load-bearing member 21. Furthermore, a plurality of second reinforcement members, or first stirrups 7, are disposed longitudinally within the second load-bearing member 21, extending beyond the first reinforcement members. The first stirrups 7 and first longitudinal bars 6 can be welded, screwed, or tied together. The distance between adjacent second reinforcement members in the first and second load-bearing members 1, 21 can be 100 mm.

[0051] like Figures 2-3 、 Figures 5-7 As shown, the first reinforcement member in the first load-bearing member 1 and the first reinforcement member in the second load-bearing member 21 are both extended to, that is, buried in, the first post-casting area. The first reinforcement member in the first load-bearing member 1 extends to one end of the first post-casting area and is connected to the first reinforcement member in the second load-bearing member 21 that extends to the first post-casting area. Specifically, the two corresponding ends of the first reinforcement members can be directly welded together; or they can be connected together through a connecting member: for example, a connecting plate with an L-shaped cross section and multiple bolt holes on the two side plates is set between the ends of the two first reinforcement members, and then the ends of the two corresponding first reinforcement members are fixed to the connecting plate by bolts respectively; or, as Figures 2-3 、 Figure 5 、 Figure 9 、 Figures 12-13 As shown, the ends of the two corresponding first reinforcements are connected together through the connecting sleeve 11. The connecting sleeve 11 and the centers of the two corresponding first reinforcements are aligned. An internal thread is provided in the connecting sleeve 11. The ends of the two corresponding first reinforcements are respectively provided with external threads that engage with the internal thread of the connecting sleeve 11. The connecting sleeve 11 plays a guiding role in the connection of the two corresponding first reinforcements. Compared with welding and other methods, the method of connecting the two corresponding first reinforcements together through the connecting sleeve 11 is simpler and more efficient. When the connecting sleeve 11 is made of a higher strength material such as a steel structure, the connecting sleeve 11 can withstand a certain load without damage and has good connection performance.

[0052] like Figures 2-3 、 Figure 6 、 Figure 11As shown, the bearing assembly 14 includes a first bearing member 19 embedded in the first bearing member 1, and a second bearing member 18 embedded in the second bearing member 21. One end of the first bearing member 19 and the second bearing member 18 are both embedded in the first post-casting area and connected, which can be specifically welded or bolted. The first bearing member 1 and the second bearing member 21 can be various structures made of materials such as steel plates or glass fiber; the first bearing member 19 and the second bearing member 18 are aligned with the centers of the first bearing member 1 and the second bearing member 21 respectively, and the centers of the first bearing member 19 and the second bearing member 18 are aligned. Figures 2-3 、 Figure 6 、 Figure 11 As shown, the first bearing member 19 and the second bearing member 18 are both square steel tubes. For the sake of clarity, they are respectively recorded as the first square steel tube and the second square steel tube. The side of the first square steel tube is provided with a plurality of first connecting holes 22, and the side of the second square steel tube is provided with a plurality of second connecting holes 23. The first square steel tube and the second square steel tube are sleeved together. For example, the outer diameter of the first square steel tube is smaller than the inner diameter of the second square steel tube, that is, the first square steel tube is sleeved in the second square steel tube. After the first square steel tube and the second square steel tube are connected, the screw 20 passes through the first connecting hole 22 and the second connecting hole 23 in sequence. The second connecting hole 23 is provided, and nuts and other fasteners are threadedly connected at both ends of the screw 20 passing through the first connecting hole 22 and the second connecting hole 23, thereby stably connecting the first square steel pipe and the second square steel pipe together. The first connecting holes 22 on different sides of the first square steel pipe are staggered, and the second connecting holes 23 on different sides of the second square steel pipe are staggered, so as to realize the connection and fixation of the first square steel pipe and the second steel pipe in multiple directions; during assembly, the centers of the first connecting hole 22, the second connecting hole 23, the screw 20 and the nuts and other fasteners are aligned.

[0053] like Figures 2-3 、 Figure 6 、 Figure 11 As shown, the first square steel tube has four first connection holes 22 on its side wall, and the second square steel tube has four second connection holes 23 on its side wall. Adjacent first connection holes 22 are spaced 50 mm apart, and adjacent second connection holes 23 are spaced 50 mm apart. The distance between the long side of the first square steel tube and the first connection holes 22 is 25 mm, and the distance between the first connection hole 22 closest to the first post-casting area and the end of the first square steel tube away from the first post-casting area is 50 mm. The distance between the long side of the second square steel tube and the second connection holes 23 is 25 mm, and the distance between the second connection hole 23 closest to the first post-casting area and the end of the second square steel tube away from the first post-casting area is 50 mm. The length of the first square steel tube exposed outside the first load-bearing member 1 is equal to the sum of the heights of the first post-casting area and the post-casting section 3.

[0054] The first square steel pipe and the second square steel pipe increase the contact area with the post-casting section 3, increase the bonding force, and improve the integrity, rigidity and bearing capacity of the connection node device. After aligning the first connecting hole 22 and the second connecting hole 23, the screw 20 is passed through the first connecting hole 22 and the second connecting hole 23 in sequence to achieve the positioning of the first square steel pipe and the second square steel pipe. Then, fasteners such as nuts can be fixed to the two ends extending from the screw 20, which makes the installation of the first square steel pipe and the second square steel pipe relatively simple; the first square steel pipe and the second square steel pipe are used in conjunction with the connecting sleeve 11. The first square steel pipe, the second square steel pipe, and the connecting sleeve 11 all play an auxiliary positioning role, which is convenient for on-site construction and lifting.

[0055] like Figure 2 、 Figure 8 As shown, the first reinforcement members and the second reinforcement members in the third load-bearing member and the fourth load-bearing member 2 are arranged in the same manner, and the first reinforcement members and the second reinforcement members in the fourth load-bearing member 2 are used for explanation: a plurality of first reinforcement members are arranged in the fourth load-bearing member 2 along the longitudinal interval, the first reinforcement member includes a second longitudinal reinforcement 10 arranged at the bottom of the fourth load-bearing member 2, and a third longitudinal reinforcement 13 arranged at the top of the fourth load-bearing member 2, the third longitudinal reinforcement 13 is located in the third load-bearing member or the fourth load-bearing member 2, the second longitudinal reinforcement 10 and the third longitudinal reinforcement 13 are rod-shaped, and the second reinforcement member, namely the second stirrup 9, which is sleeved outside the first reinforcement member (sleeved outside the second longitudinal reinforcement 10 and the third longitudinal reinforcement 13) and welded or tied to the first reinforcement, is provided. The adjacent second stirrups 9 are arranged at intervals of 150 mm, and the second stirrups 9 are ring-shaped. The second longitudinal reinforcement 10 in the third load-bearing member and the fourth load-bearing member 2 extends to, that is, is buried in the first post-casting area and connected together, such as by welding or bolting. The end of the second longitudinal reinforcement 10 extending to the first post-casting area is bent, as shown in FIG. Figure 2 、 Figure 8 As shown, the second longitudinal reinforcement 10 in the third and fourth bearing members 2 extends to the end portion in the first post-casting area and bends upward to form a bending section 33, as shown in FIG. Figure 2 As shown, the bent section is overlapped with the first longitudinal reinforcement 6 in the first load-bearing member 1 and the second load-bearing member 21 to form an overlap section 25, and the bent section 33 and the first longitudinal reinforcement 6 in the first load-bearing member 1 and the second load-bearing member 21 can be welded or tied together.

[0056] The connection node device also includes a post-casting section 3 provided on at least one of the first load-bearing member 1, the second load-bearing member 21, the third load-bearing member, and the fourth load-bearing member 2, connected to the first post-casting area, and used for pouring slurry such as concrete. This allows the first to fourth load-bearing members 2 to be connected together through the first post-casting area, or through the first post-casting area and the post-casting section 3. At the same time, the first load-bearing member 1 and the second load-bearing member 21 are positioned by the bearing assembly 14, which improves the bonding strength between the first to fourth load-bearing members 2 and the first post-casting area and the post-casting section 3, thereby improving the overall rigidity of the connection node device. Among them, the first post-casting area can be cast with ordinary concrete or ultra-high performance concrete (UHPC); the post-casting section 3 can be cast with ultra-high performance concrete (UHPC). UHPC has the characteristics of high strength, high toughness, high durability and self-compacting properties, which can improve the connection strength between the first load-bearing member 1, the second load-bearing member 21 and the first post-casting area.

[0057] like Figures 2-3 、 Figure 9 As shown, the first load-bearing member 1 has one end, i.e., the bottom end, facing the first post-casting area, the third load-bearing member has one end facing the first load-bearing member 1, and the fourth load-bearing member 2 has one end facing the first load-bearing member 1, all of which are provided with a post-casting section 3 connected to the first post-casting area, and the top of the first post-casting area is flush with the bottom of the post-casting section 3.

[0058] like Figure 2 、 Figures 8-9 As shown, a number of third reinforcement members are embedded in the post-cast section 3 and the first post-cast area at the top of the third and fourth load-bearing members 2. The third reinforcement member includes a number of fourth longitudinal bars 8 arranged along the longitudinal direction of the first post-cast area. The second stirrups 9 are sleeved outside the fourth longitudinal bars 8. The second stirrups 9 and the fourth longitudinal bars 8 can be connected by welding or binding. A number of first stirrups 7 are embedded in the post-cast section 3 at the bottom of the first load-bearing member 1, and the adjacent first stirrups 7 are spaced 100mm apart. The fourth reinforcement member, namely the third stirrup, which is sleeved outside the first reinforcement member, is provided in the first post-cast area. The third stirrups and the first reinforcement member can be welded or bound, and the adjacent third stirrups are spaced 75mm apart. The first post-cast area should be cast after the first to fourth load-bearing members 2 are installed and the fourth longitudinal bars 8 and the third stirrups are assembled. Among them, the first to fourth longitudinal bars and the first to third stirrups can specifically be reinforcement bars made of materials such as steel bars.

[0059] like Figures 2-3 、 Figure 5As shown, a number of positioning members 32 for fixing the position of the second bearing member 18 are further provided in the post-casting section 3. The positioning members 32 include four fixing ribs distributed in a criss-cross shape on the cross section. The fixing ribs can specifically be steel bars. For example, two fixing ribs are arranged at intervals in the front-to-back direction, and two fixing ribs are arranged at intervals in the left-to-right direction below these two fixing ribs. The fixing ribs arranged in the front-to-back direction and the fixing ribs arranged in the left-to-right direction can be welded or bolted together. It should be noted that the gap between the four fixing ribs should not be too large when fixing the second bearing member 18, and may not be greater than the outer diameter of the second bearing member 18, so as to play the role of fixing the second bearing member 18.

[0060] Furthermore, as required, the rigidity of the energy dissipation component 5 may be greater than or not greater than the rigidity of the first to fourth load-bearing components. At least one group of two adjacent structures among the first load-bearing member 1, the second load-bearing member 21, the third load-bearing member and the fourth load-bearing member 2 are respectively connected to the two ends of the energy-absorbing component 5, and the stiffness of the two ends of the energy-absorbing component 5 is greater than the stiffness of the middle area of the energy-absorbing component. When the stiffness of the energy-absorbing component 5 is less than the stiffness of the above-mentioned load-bearing members (the above-mentioned load-bearing members refer to the first load-bearing member 1, the second load-bearing member 21, the third load-bearing member and the fourth load-bearing member 2), this allows the energy-absorbing component 5 to undergo plastic deformation before the first to fourth load-bearing members and the first post-casting area when the connection node device is subjected to external loads. Therefore, when the structure using the connection node device of the present invention is subjected to a smaller load, if the energy-absorbing component 5 is not damaged, the connection node device does not need to be maintained. When the structure using the connection node device of the present invention is subjected to a larger load, if only the energy-absorbing component 5 is damaged, only the energy-absorbing component 5 needs to be replaced, and there is no need to repair the first to fourth load-bearing members and the first post-casting area. Obviously, this reduces the maintenance cost of the building using the connection node device of the present invention.

[0061] The energy dissipation assembly 5 includes an energy dissipation plate 26, with several energy dissipation zones defined in the middle region of the plate 26 (the middle region refers to the area away from the ends, not just the midpoint of the plate 26). Specifically, the energy dissipation zones can be hollowed-out portions provided on the plate 26, including oblong holes 27, elliptical holes, or circular holes, or hollowed-out grooves provided on the edges of the plate 26. Alternatively, when the cross-section of the plate 26 gradually decreases toward the middle, the middle region with the smaller cross-section serves as the energy dissipation zone. However, it should be noted that the provision of energy dissipation zones must not reduce the rigidity of the plate 26 excessively, to prevent the plate 26 from fracturing under relatively low loads. If required by the operating conditions, the ends of the energy dissipation assembly 5 may refer solely to the ends of the assembly 5, or alternatively, the ends of the assembly 5 may include not only the ends but also the areas near each end.

[0062] like Figure 2 、 Figures 7-8 、 Figure 11As shown, an energy dissipation plate 26 is tilted between the second and third load-bearing members 21, and between the second and fourth load-bearing members 2. This creates a triangular structure between the second and third load-bearing members 21 and the energy dissipation plate 26. This, in turn, increases the stiffness of the connection node and the overall stability of the connection node device. The oblong hole 27 in the energy dissipation plate 26 deforms under tension to dissipate energy. When subjected to compression, it can provide partial support through its own strength.

[0063] The energy dissipation plate 26 and the second load-bearing member 21 , the third load-bearing member, and the fourth load-bearing member 2 can be connected by bolts and nuts or screws. Specifically, the present invention provides first mounting holes 28 at both ends of the energy dissipation plate 26, and the energy dissipation plate 26 can be directly fixed to the above-mentioned load-bearing member by first fasteners 24 such as bolts and nuts; or, a fixing plate 15 is embedded in the above-mentioned load-bearing member, for example, the fixing plates 15 in the third and fourth load-bearing members 2 are welded together with the second stirrups 9, and the energy dissipation plate 26 is fixed to the fixing plates 15 in their respective load-bearing members by first fasteners 24 such as bolts and nuts, and the end of the fixing plate 15 away from the energy dissipation plate 26 is connected to a wedge plate 16 embedded in the above-mentioned load-bearing member, the wedge plate 16 can be integrally formed with the fixing plate 15, or welded together, the wedge plate 16 increases the contact area between the fixing plate 15 and the slurry in the above-mentioned load-bearing member, thereby improving the connection firmness of the fixing plate 15, the energy dissipation plate 26 and the above-mentioned load-bearing member, so that the two adjacent load-bearing members connected by the energy dissipation plate 26 can be more tightly connected.

[0064] A third fastener 30 such as a single-sided bolt and a reinforcement plate 31 are also embedded in the above-mentioned load-bearing member (the above-mentioned load-bearing member refers to the load-bearing member connected by the energy-absorbing plate 26). The third fastener 30 is welded on both sides of the fixed plate 15 and is arranged vertically and through the reinforcement plate 31. The third fastener 30 passes through one end of the reinforcement plate 31 and is connected to a second fastener 29 such as a nut. Anchors 17 such as studs embedded in the above-mentioned load-bearing member are welded on both sides of the wedge plate 16. An anchor 17 close to the end plate is welded together with the first stirrup 7 or the second stirrup 9 for positioning and fixing. The anchor 17 increases the bonding area with the above-mentioned load-bearing member, improves the bonding force, and further improves the stability of the connection between the fixed plate 15, the wedge plate 16 and the above-mentioned load-bearing member. Among them, four second mounting holes are provided on the integral structure formed by the fixing plate 15 and the wedge plate 16, and the distance between adjacent second mounting holes is 80 mm. The second mounting hole closest to the edge of the fixing plate 15 is 40 mm away from the bottom end of the fixing plate 15. Specifically, three second mounting holes are provided on the wedge plate 16, and a second mounting hole is provided on the fixing plate 15 for aligning with the first mounting hole 28 at the end of the energy dissipation plate 26. The second mounting hole on the fixing plate 15 is used for the first fastener 24 to pass through, and the first fastener 24, the second mounting hole, and the nut threadedly connected to the first fastener 24 are aligned in center. A third mounting hole for the third fastener 30 to pass through is opened on the reinforcement plate 31, and the third mounting hole, the third fastener 30 and the second fastener 29 are aligned in center.

[0065] like Figure 13 As shown, after the first reinforcement member in the first load-bearing member 1 and the first reinforcement member in the second load-bearing member 21 are connected, and after the post-casting area 4 is cast and formed, a mold with open ends is installed at the bottom of the first load-bearing member 1. The mold includes a first support plate 34 provided on two opposite sides of the first load-bearing member 1, and a second support plate 37 provided on the other two opposite sides of the first load-bearing member. A reinforcement plate 36 is provided on the side of the first support plate 34 away from the first load-bearing member 1. The first support plate 34 and the second support plate 37 can be connected together by steel nails or bolts. The bottom of the cavity formed by the first support plate 34 and the second support plate 37 must fall within the scope of the post-casting area 4 to prevent leakage of grouting material. The projection height of the first support plate 34 and the second support plate 37 in the vertical screen shall not be lower than the height of the post-casting section 3 at the bottom of the first load-bearing member 1 to ensure that the post-casting section 3 at the bottom of the first load-bearing member 1 can reach the required height. As shown Figure 14As shown, the first support plate 34 and the second support plate 37 are both trapezoidal support plates, and the first support plate 34 and / or the second support plate 37 are arranged obliquely or perpendicularly on the post-casting area 4. When the first support plate 34 is arranged obliquely, the inclination angle of the first support plate 34 can be 30° to 60°. The reinforcement plate 36 is arranged perpendicular to the post-casting area 4. The reinforcement plate 36 is triangular or wedge-shaped to provide the support force required for the post-casting section 3. After a sufficient amount of grout, such as ultra-high performance concrete, is injected into the cavity formed by the first support plates 34 and the second support plates 37, four third support plates 35 are inserted into the cavity, each of which is aligned with one side of the first load-bearing member 1. The height of the third support plates 35 is not less than the distance between the bottom of the first load-bearing member 1 and the top of the post-casting area 4. After ensuring that there is sufficient grout in the space formed by the third support plates 35, the top of the post-casting area 4, and the bottom of the first load-bearing member, the bottom of the third support plates 35 is aligned with the top of the post-casting area 4 to isolate excess grout and facilitate the formation of the post-casting section 3.

[0066] The first support plate 34, the second support plate 37, the third support plate 35, and the reinforcement plate 36 can be made of wood or plastic, etc., which makes the mold more flexible and simple in structure, and facilitates the molding of the post-casting section 3. The first support plate 34 and the second support plate 37, and the first support plate 34 and the reinforcement plate 36 can be connected together by steel nails, bolts, or adhesives.

[0067] In addition, the present invention also provides a method for applying the above-mentioned connection node device, and the construction method includes:

[0068] Step S1, preparing a prefabricated first load-bearing member 1, a second load-bearing member 21, a third load-bearing member, a fourth load-bearing member 2, a load-bearing assembly 14 and an energy-consuming assembly 5 in a factory;

[0069] Step S2, assembling the first load-bearing member 1, the second load-bearing member 21, the third load-bearing member, and the fourth load-bearing member 2, and connecting the first load-bearing member 1 and the second load-bearing member 21 together through the load-bearing assembly 14, and / or connecting the third load-bearing member and the fourth load-bearing member 2 together through the load-bearing assembly 14, specifically: connecting the first reinforcement member in the first load-bearing member 1 and the corresponding first reinforcement member in the second load-bearing member 21, connecting the first reinforcement member in the third load-bearing member and the corresponding first reinforcement member in the fourth load-bearing member 2, bending the second longitudinal reinforcement 10 in the third load-bearing member and the fourth load-bearing member 2 and overlapping with the first longitudinal reinforcement 6 extending from the first load-bearing member 1 and the second load-bearing member 21, and then installing the energy-absorbing assembly 5 on the beam-column node, that is, connecting both ends of the energy-absorbing assembly 5 to the corresponding load-bearing members respectively;

[0070] Step S3, make the positioning piece 32 on site, and tie the second stirrup 9 in the first post-casting area and the positioning piece 32 to the first longitudinal reinforcement 6 extending outward from the second load-bearing member 21, and install the second square steel pipe inward, and then overlap the second longitudinal reinforcement 10 in the first post-casting area on the second stirrup 9; after the above steps are completed, make a mold and pour the slurry into the first post-casting area, after the first post-casting area is solidified and formed, hoist the first load-bearing member 1, and embed the first square steel pipe embedded in the first load-bearing member 1 into the second square steel pipe, and align it with the first connecting hole 22 and the second connecting hole 23, and install the screw 20 to fix it; then, align the first load-bearing member 1 and the first longitudinal reinforcement 6 of the second load-bearing member 21, and reserve a certain distance between the corresponding first longitudinal reinforcements 6 to install the connecting sleeve 11, connect and fix the first load-bearing member 1 and the second load-bearing member 21, and then bundle the first stirrups 7 in the post-cast section 3 and the four fixing reinforcements that constitute the positioning member 32; after the above steps are completed, install the first support plate 34, the second support plate 37 and the reinforcement plate 36 at the bottom of the first load-bearing member 1, and pour ultra-high performance concrete. After the pouring is completed, insert the third support plate 35 on each side of the bottom of the first load-bearing member 1 to form a post-cast section 3 of a predetermined structure. After the post-cast section 3 is finalized, remove the mold.

[0071] The aforementioned advantages of the connection node device of the present invention enable its use at the joints of various structural types, effectively connecting and seismically protecting these structures, thereby reducing the maintenance costs of buildings employing the connection node device. Furthermore, compared to existing joint reinforcement structures that rely on numerous steel bars and steel plates, the connection node device of the present invention requires a simpler and more reliable structure.

[0072] In this document, "several" refers to at least one. In this document, "and / or" refers to the textual content preceding "and / or" and the textual content following "and / or" which can exist simultaneously or separately. For example, "A" and "B" include the presence of either "A" or "B" alone, as well as the presence of both "A" and "B" simultaneously.

[0073] The present invention discloses multiple technical solutions, but does not provide any contrary technical suggestions. The contents not covered in the present invention are applicable to the prior art.

[0074] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A connection node device, characterized in that: The connection node device includes: A first load-bearing member and a second load-bearing member are spaced apart along a first direction, and a third load-bearing member and a fourth load-bearing member are spaced apart along a second direction, wherein an angle A is formed between the first direction and the second direction, 0<A≤90°, and a first post-pouring area for pouring slurry is formed between the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member; A bearing assembly, wherein the first bearing member and the second bearing member are connected via the bearing assembly, and / or the third bearing member and the third bearing member are connected via the bearing assembly; and a portion of the bearing assembly is buried in the first post-casting area; Energy-absorbing component, at least two adjacent structures among the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member are connected through the energy-absorbing component.

2. The connection node device according to claim 1, characterized in that The load-bearing assembly includes a plurality of first reinforcement members and a plurality of second reinforcement members embedded in at least one of the first load-bearing member, the second load-bearing member, the third load-bearing member, and the fourth load-bearing member, wherein the first reinforcement members and the second reinforcement members are arranged in different directions and connected; And / or, the bearing assembly includes a plurality of third reinforcement members and a plurality of fourth reinforcement members buried in the first post-casting area, and the third reinforcement members and the fourth reinforcement members are arranged in different directions and connected.

3. The connection node device according to claim 2, characterized in that: One end of the first load-bearing member and / or the second load-bearing member extends into the first first post-casting area and is connected to the third reinforcement member; And / or, the first reinforcement member of the first load-bearing member is connected to the first reinforcement member in the second load-bearing member.

4. The connection node device according to claim 3, characterized in that: The first reinforcement member in the first load-bearing member and the first reinforcement member in the second load-bearing member are bolted, threaded or welded.

5. The connection node device according to claim 1, characterized in that: The connection node device also includes a post-pouring section which is provided on at least one of the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member and is connected to the first post-pouring area and is used for pouring slurry.

6. The connection node device according to claim 5, characterized in that: One end of the first load-bearing member facing the first post-casting area, one end of the third load-bearing member facing the first load-bearing member, and one end of the fourth load-bearing member facing the first load-bearing member are all provided with the post-casting section connected to the first post-casting area.

7. The connection node device according to claim 1, characterized in that: At least one group of two adjacent structures among the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member are respectively connected to the two ends of the energy-absorbing component, and the stiffness of the two ends of the energy-absorbing component is greater than the stiffness of the middle area of the energy-absorbing component; and / or, the energy-absorbing component includes an energy-absorbing plate, and a plurality of energy-absorbing areas are provided on the middle area of the energy-absorbing plate.

8. The connection node device according to claim 7, characterized in that: The energy dissipation area includes a hollow portion provided on the energy dissipation plate; or, the cross section of the energy dissipation plate gradually decreases from both ends of the energy dissipation plate toward the middle.

9. The connection node device according to claim 7, characterized in that: The energy dissipation plate is obliquely provided between the second load-bearing member and the third load-bearing member, and the energy dissipation plate is obliquely provided between the second load-bearing member and the fourth load-bearing member.

10. A construction method using the connection node device according to any one of claims 1 to 9, characterized in that: The construction method comprises: Step S1, prefabricating the first load-bearing member, the second load-bearing member, the third load-bearing member, the fourth load-bearing member, the load-bearing assembly and the energy-consuming assembly; Step S2, assembling the first load-bearing member, the second load-bearing member, the third load-bearing member, and the fourth load-bearing member, and connecting the first load-bearing member and the second load-bearing member through the load-bearing assembly, and / or connecting the third load-bearing member and the fourth load-bearing member through the load-bearing assembly; Step S3, pouring slurry into the first post-pouring area, and after the first post-pouring area is solidified and formed, pouring slurry into the post-pouring section connected to the first post-pouring area on at least one of the first load-bearing member, the second load-bearing member, the third load-bearing member and the fourth load-bearing member.

Images