Steel structure beam-column joint of double-energy-consumption device
By introducing dual energy dissipation devices into the steel structure beam-column joints, including double-web cantilever beams, reinforced rods and composite energy dissipation devices, the plastic deformation and damage problems of traditional beam-column joints under earthquake action are solved, and efficient energy absorption and structural recovery capacity are improved.
Patent Information
- Application Number
- CN202422995712.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Traditional beam-column joints are prone to plastic deformation and damage under earthquakes, have limited energy dissipation capacity, and result in poor structural safety and reliability, and are difficult to repair after an earthquake.
The steel structure beam-column node adopts dual energy dissipation devices, including double-web cantilever beams, reinforced rods, Z-shaped energy dissipation devices and composite energy dissipation devices. It absorbs and dissipates seismic energy through multiple energy dissipation mechanisms, avoids brittle failure of the main structure, and improves recovery capacity.
It can effectively absorb earthquake energy, reduce structural impact, improve safety and post-earthquake repair capabilities, extend structural life, reduce resource waste, and have higher economic benefits.
Smart Images
Figure CN223446387U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to steel structure technical field especially is related to a steel structure beam column joint of double energy dissipation device BACKGROUND
[0002] Traditional beam column joint usually adopts rigid connection or semi rigid connection, and these nodes are prone to plastic deformation and damage of beam column body under the action of earthquake, which makes the node difficult to repair or unrecoverable after the earthquake, and the overall energy dissipation capacity of the structure is limited, the safety is low, the reliability and economy are poor and the like. Specific problems include:
[0003] Rigid connection: under the action of strong earthquake, the node of rigid connection is prone to large residual deformation, which leads to the decline of the overall performance of the structure. Semi rigid connection: although semi rigid connection can absorb part of energy to a certain extent, its energy dissipation capacity is limited, and it is prone to fatigue damage under multiple earthquake actions.
[0004] The main role of the energy dissipation device is to absorb and dissipate seismic energy through plastic deformation or friction mechanism, so as to protect the main structure from damage or less damage; reduce the fatigue damage of the structure under multiple earthquake actions, prolong the service life of the structure; under the action of strong earthquake, the residual deformation and displacement of the structure are small, which can improve the safety of the building. CONTENT OF THE UTILITY MODEL
[0005] The utility model provides a steel structure beam column joint of double energy dissipation device, and the node adopts double energy dissipation device, can provide multiple energy dissipation mechanism, efficient absorption and dissipation of seismic energy, reduce the impact of earthquake on structure, make the structure can produce larger plastic deformation under the action of earthquake without brittle failure, improve the recovery ability of structure, speed up the repair work after the earthquake.
[0006] The utility model aims to realize the following technical scheme:
[0007] The utility model discloses a steel structure beam column joint of double energy dissipation device is connected between H type steel column and H type frame beam, including double web cantilever beam, reinforcing bar, Z character energy dissipation device and composite energy dissipation device, double web cantilever beam one end is connected H type steel column, composite energy dissipation device is connected between double web cantilever beam and H type frame beam;Z character energy dissipation device is arranged below the lower flange of double web cantilever beam, and the top plate of Z character energy dissipation device is connected with the lower flange of double web cantilever beam and H type frame beam respectively;One reinforcing bar connects double web cantilever beam and H type steel column, and another reinforcing bar connects Z character energy dissipation device and H type steel column.
[0008] Further, the web of one end of the double-web cantilever beam is bolted to the flange of one side of the H-shaped steel column through the double-groove connecting piece, a gap equal to the thickness of the flange of the double-web cantilever beam is left between the double-web cantilever beam and the H-shaped steel column, the upper and lower flanges near the end of the H-shaped steel column are connected to the flange of one side of the H-shaped steel column through angle steels respectively, and an open backing plate with a groove at the top end is welded to the end of the double-web cantilever beam away from the H-shaped steel column.
[0009] Further, the double-groove connecting piece is composed of a rectangular steel plate and two pairs of rectangular steel plates which are vertically welded to the rectangular steel plate, a groove is formed between each pair of rectangular steel plates and matched with the web of the double-web cantilever beam, and the two webs of the double-web cantilever beam are embedded in the two grooves respectively and connected through single-sided bolts.
[0010] Further, the two angle steels are unequal angle steels, the single-sided bolts are arranged in the middle of the angle steels connected to the end of the double-web cantilever beam, and the rest are double-sided bolts.
[0011] Further, the reinforcing rod is composed of a round rod, a concave welding piece and a ring buckle plate, the round rod is welded to the concave welding piece at one end and welded to the panel of the ring buckle plate at the other end, the ring buckle plate is connected to the H-shaped steel column, and the concave welding piece is connected to the upper flange of the double-web cantilever beam or the end of the vertical rib of the T-shaped steel at the lower end of the Z-shaped energy dissipation device.
[0012] Further, the Z-shaped energy dissipation device is composed of four Z-shaped plates which are arranged at equal intervals and welded to the vertical rib of the T-shaped steel and the top plate at the upper and lower ends respectively, the horizontal rib of the T-shaped steel is bolted to the flange of the H-shaped steel column, the top plate is arranged below the composite energy dissipation device and bolted to the double-web cantilever beam and the H-shaped frame beam respectively.
[0013] Further, the composite energy dissipation device is composed of an arc-shaped energy absorber, a prestressed tendon and a weakened cover plate, the two arc-shaped energy absorbers are symmetrically arranged between the open backing plate of the double-web cantilever beam and the rectangular backing plate of the H-shaped frame beam, the plurality of parallel prestressed tendons are arranged to pass through the two side plates of the arc-shaped energy absorber, the open backing plate and the rectangular backing plate, connect the double-web cantilever beam and the H-shaped frame beam, and the weakened cover plate is bolted to the upper flanges of the double-web cantilever beam and the H-shaped frame beam respectively.
[0014] Further, the arc-shaped energy absorber is composed of an arc-shaped plate with arc-shaped openings at the upper and lower ends arranged between the two side plates.
[0015] Further, the weakened cover plate has arc-shaped notches at the positions corresponding to the arc-shaped energy absorbers on the two sides, and a rectangular hole groove matched with the concave welding piece is formed at the end close to the concave welding piece.
[0016] The utility model discloses the following beneficial effects:
[0017] 1.The utility model discloses a double-web plate structure is set to cantilever beam, and further reinforces the connection of cantilever beam and H-shaped steel column by reinforcing bar, forces the plastic hinge to move outward, makes the plastic hinge and damage mainly concentrate on Z-shaped energy dissipation device and composite energy dissipation device, and the beam column main body keeps the elastic deformation, thereby improves the stability and the post-earthquake repairability of structure.
[0018] 2.The utility model discloses four Z-shaped plates are welded with the vertical rib of roof and T-shaped steel respectively to form Z-shaped energy dissipation device, and form the first set of energy dissipation device, and the device has higher ductility;Composite energy dissipation device is composed of arc energy absorber, prestressed tendon and weakened cover plate, two arc energy absorbers are arranged between double-web plate cantilever beam and H-shaped frame beam symmetrically, the prestressed tendon passes through arc energy absorber, opening pad and rectangular pad, and the weakened cover plate is arranged above two arc energy absorbers, forming the second set of energy dissipation device. Two sets of energy dissipation devices work together to absorb and dissipate seismic energy efficiently, double the energy dissipation effect, and have better ductility, integrity and stability, and the energy dissipation device does not break down prematurely, so that the structure has better seismic performance, and the node has better replaceability after the earthquake, can reduce resource waste, and has higher economic benefit. ACCURACY OF DRAWINGS
[0019] Figure 1 It is a structure schematic diagram of a double energy dissipation device steel structure beam column joint of the utility model embodiment;
[0020] Figure 2 It is an explosion drawing of a double energy dissipation device steel structure beam column joint of the utility model embodiment;
[0021] Figure 3 It is an explosion drawing of double-web plate cantilever beam of a double energy dissipation device steel structure beam column joint of the utility model embodiment;
[0022] Figure 4 It is an explosion drawing of reinforcing bar of a double energy dissipation device steel structure beam column joint of the utility model embodiment;
[0023] Figure 5 It is an explosion drawing of Z-shaped energy dissipation device of a double energy dissipation device steel structure beam column joint of the utility model embodiment;
[0024] Figure 6 It is an explosion drawing of composite energy dissipation device of a double energy dissipation device steel structure beam column joint of the utility model embodiment.
[0025] Fig. 1 is an H-shaped steel column; 2 is a double-web cantilever beam; 21 is a double-groove connecting piece; 22 is an angle steel; 23 is an open gusset plate; 3 is a reinforcing bar; 31 is a round bar; 32 is a concave welding piece; 33 is a ring buckle plate; 4 is a Z-shaped energy dissipation device; 41 is a T-shaped steel; 42 is a Z-shaped plate; 43 is a top plate; 5 is a composite energy dissipation device; 51 is an arc-shaped energy dissipation device; 52 is a prestressed tendon; 53 is a weakened cover plate; 6 is an H-shaped frame beam; 61 is a rectangular gusset plate. DETAILED DESCRIPTION
[0026] The utility model will be described in detail below in combination with the drawings and examples.
[0027] Example: Reference Figures 1-2 A steel structure beam-column joint of a double energy dissipation device is connected between an H-shaped steel column 1 and an H-shaped frame beam 6, comprising a double-web cantilever beam 2, a reinforcing bar 3, a Z-shaped energy dissipation device 4 and a composite energy dissipation device 5, one end of the double-web cantilever beam 2 is connected to the H-shaped steel column 1 by bolts, the composite energy dissipation device 5 is connected between the double-web cantilever beam 2 and the H-shaped frame beam 6, the Z-shaped energy dissipation device 4 is arranged below the lower flange of the double-web cantilever beam 2, the top plate 43 of the Z-shaped energy dissipation device 4 is connected to the lower flanges of the double-web cantilever beam 2 and the H-shaped frame beam 6 respectively, one reinforcing bar 3 is connected to the double-web cantilever beam 2 and the H-shaped steel column 1, and the other reinforcing bar 3 is connected to the Z-shaped energy dissipation device 4 and the H-shaped steel column 1.
[0028] Reference Figures 1-3 One end of the double-web cantilever beam 2 is bolted to the flange of one side of the H-shaped steel column 1 through the double-groove connecting piece 21, a gap equal to the thickness of the flange of the double-web cantilever beam 2 is left between the double-web cantilever beam 2 and the H-shaped steel column 1, the upper and lower flanges near one end of the H-shaped steel column 1 are bolted to the flange of one side of the H-shaped steel column 1 through the angle steel 22 respectively, an open gusset plate 23 with a groove at the top end is welded to one end of the double-web cantilever beam 2 away from the H-shaped steel column 1, and the groove opening is used for cooperating with the concave welding piece 32 of the reinforcing bar 3. The cantilever beam is arranged in the form of double-web, which can significantly improve the stiffness, bearing capacity, stability, shear capacity and durability of the joint.
[0029] The double-groove connecting piece 21 is composed of a rectangular steel plate vertically welded with two pairs of rectangular steel plates, each pair of which forms a groove matched with the web of the double-web cantilever beam 2, and two grooves are formed in total, and the two webs of the double-web cantilever beam 2 are respectively embedded into the two grooves, and then connected by single-sided bolts; the two angle steels 22 are unequal angle steels, and since the web of the double-web cantilever beam 2 is double-web, the space is limited when the angle steel 22 is installed, so one bolt in the middle of the part of the angle steel 22 connected with the end of the double-web cantilever beam 2 is a single-sided bolt, and since the concave welding piece 32 is welded at the upper flange away from the H-shaped steel column 1 at one end of the double-web cantilever beam 2, the upper end of the open gasket plate 23 is provided with a rectangular recess matched therewith.
[0030] Reference Figure 1 , Figure 2 , Figure 4 The reinforcing rod piece 3 is composed of a round rod 31, a concave welding piece 32 and a ring buckle plate 33, two reinforcing rod pieces 3 are respectively arranged above the double-web cantilever beam 2 and below the Z-shaped energy dissipation device 4, one end of the round rod 31 is welded on the concave welding piece 32, and the other end is welded on the panel of the ring buckle plate 33, the concave welding piece 32 of the reinforcing rod piece 3 above the double-web cantilever beam 2 is welded with the upper flange of the double-web cantilever beam 2, and the ring buckle plate 33 is buckled into the corresponding connecting position along the flange at the top of the H-shaped steel column 1 and connected by bolts; the concave welding piece 32 of the reinforcing rod piece 3 at the lower end of the Z-shaped energy dissipation device 4 is welded with the vertical rib end of the T-shaped steel 41 of the Z-shaped energy dissipation device 4, and the ring buckle plate 33 is connected with the H-shaped steel column 1 by bolts. The reinforcing rod piece 3 respectively reinforces the double-web cantilever beam 2 and the H-shaped steel column 1, and the Z-shaped energy dissipation device 4 and the H-shaped steel column 1, which can improve the integrity and ductility of the structure.
[0031] Reference Figure 1 , Figure 2 , Figure 5 The Z-shaped energy dissipation device 4 is composed of four Z-shaped plates 42 arranged at equal intervals, the upper and lower ends of which are respectively welded with the top plate 43 and the vertical rib of the T-shaped steel 41, the horizontal rib of the T-shaped steel 41 is connected with the flange on one side of the H-shaped steel column 1 by bolts, the top plate 43 is arranged below the composite energy dissipation device 5 and connected with the double-web cantilever beam 2 and the H-shaped frame beam 6 by bolts. This is the first set of energy dissipation device, which is convenient to install, has good energy dissipation effect and is replaceable after the earthquake.
[0032] Reference Figure 1 , Figure 2 , Figure 6The composite energy dissipation device 5 is composed of arc-shaped energy dissipators 51, prestressed tendons 52 and weakened cover plates 53, two arc-shaped energy dissipators 51 are symmetrically arranged between the open gusset plate 23 of the double-web cantilever beam 2 and the rectangular gusset plate 61 of the H-shaped frame beam 6, a plurality of parallel prestressed tendons 52 are arranged and respectively pass through the arc-shaped energy dissipators 51, the open gusset plate 23 and the rectangular gusset plate 61, so as to connect the double-web cantilever beam 2 and the H-shaped frame beam 6, the rectangular gusset plate 61 is welded with one side of the H-shaped frame beam 6 close to the H-shaped steel column 1, and the weakened cover plate 53 is connected with the double-web cantilever beam 2 and the H-shaped frame beam 6 through bolts.
[0033] The arc-shaped energy dissipator 51 is composed of arc-shaped plates with arc-shaped openings arranged between two side plates; the middle part of the weakened cover plate 53 is arc-shaped and weakened, that is, the two sides of the weakened cover plate 53 are provided with arc-shaped notches corresponding to the positions of the arc-shaped energy dissipators 51; since the concave welding part 32 is welded to the upper flange of the end of the double-web cantilever beam 2 away from the H-shaped steel column 1, a rectangular hole groove is formed at one end close to the concave welding part 32. This is the second set of energy dissipation device, which has good energy dissipation capacity, ductility and integrity, can reduce the vibration of the structure and improve the stability of the building.
[0034] The installation steps and methods are as follows: firstly, the double-web cantilever beam 2 and the H-shaped steel column 1 are connected through bolts by the double-groove connecting piece 21 and the angle steel 22; then the reinforcing rod 3 is installed; next, the T-shaped steel 41 of the Z-shaped energy dissipation device 4 is bolted with the H-shaped steel column 1, and the top plate 43 is bolted with the double-web cantilever beam 2 and the H-shaped frame beam 6; then the reinforcing rod 3 is installed; next, the two arc-shaped energy dissipators 51 are symmetrically arranged between the open gusset plate 23 of the double-web cantilever beam 2 and the rectangular gusset plate 61 of the H-shaped frame beam 6; then the prestressed tendons 52 pass through the reserved holes of the arc-shaped energy dissipators 51, the open gusset plate 23 and the rectangular gusset plate 61, and the double-web cantilever beam 2 and the H-shaped frame beam 6 are bolted; finally, the weakened cover plate 53 is bolted with the double-web cantilever beam 2 and the H-shaped frame beam 6.
[0035] The openings, reserved holes and sizes of all components in the utility model are prefabricated in the factory, the welding between the steel plates of the double-groove connecting piece 21, the welding between the double-web cantilever beam 2 and the open gusset plate 23, the welding between all components in the Z-shaped energy dissipation device 4 and the welding between the rectangular gusset plate 61 and the H-shaped frame beam 6 are all completed in the factory, and the rest of the welding is carried out on site.
[0036] After the earthquake, only the damaged components in the Z-shaped energy dissipation device 4 and the composite energy dissipation device 5 need to be replaced to realize the rapid recovery of the building structure after the earthquake.
[0037] The components not described in detail in the utility model are all existing conventional technologies, and will not be repeated here.
[0038] It can be understood that the above specific description of the utility model is only for illustrating the utility model and is not limited to the technical solutions described in the utility model embodiments, and the person skilled in the art should understand that the utility model can still be modified or replaced equivalently to achieve the same technical effect, as long as the use needs are met, it is within the protection scope of the utility model.
Claims
1. A steel structure beam-column node of a dual energy dissipation device, connected between an H-shaped steel column (1) and an H-shaped frame beam (6), characterized in that: The invention comprises a double-web cantilever beam (2), a reinforcement rod (3), a Z-shaped energy dissipation device (4) and a composite energy dissipation device (5); one end of the double-web cantilever beam (2) is connected to an H-shaped steel column (1); the composite energy dissipation device (5) is connected between the double-web cantilever beam (2) and the H-shaped frame beam (6); the Z-shaped energy dissipation device (4) is arranged below the lower flange of the double-web cantilever beam; the top plate (43) of the Z-shaped energy dissipation device (4) is respectively connected to the lower flanges of the double-web cantilever beam (2) and the H-shaped frame beam (6); one reinforcement rod (3) is connected to the double-web cantilever beam (2) and the H-shaped steel column (1); the other reinforcement rod (3) is connected to the Z-shaped energy dissipation device (4) and the H-shaped steel column (1).
2. A steel structure beam-column joint of a dual energy dissipation device according to claim 1, characterized in that: The web at one end of the double-web cantilever beam (2) is bolted to the flange on one side of the H-shaped steel column (1) through a double-groove connector (21); a gap equal to the thickness of the flange of the double-web cantilever beam (2) is left between the double-web cantilever beam (2) and the H-shaped steel column (1); the upper and lower flanges near one end of the H-shaped steel column (1) are connected to the flange on one side of the H-shaped steel column (1) through angle steels (22) respectively; an open pad (23) with a groove on the top is welded to the end of the double-web cantilever beam (2) away from the H-shaped steel column (1).
3. A steel structure beam-column joint of a dual energy dissipation device according to claim 2, characterized in that: The double-groove connector (21) is composed of a rectangular steel plate vertically welded to two pairs of rectangular steel plates, and a groove is formed between each pair of rectangular steel plates to match the web of the double-web cantilever beam (2). The two webs of the double-web cantilever beam (2) are respectively embedded in the two grooves and connected by single-sided bolts.
4. A steel structure beam-column joint of a dual energy dissipation device according to claim 2, characterized in that: The two angle steels (22) are unequal-leg angle steels, the middle bolt of the angle steel (22) connected to the end of the double-web cantilever beam (2) is a single-sided bolt, and the rest are double-sided bolts.
5. The steel structure beam-column joint of the dual energy dissipation device according to claim 1, characterized in that: The reinforcing rod (3) is composed of a round rod (31), a concave welded piece (32) and a buckle plate (33). One end of the round rod (31) is welded to the concave welded piece (32), and the other end is welded to the panel of the buckle plate (33). The H-shaped steel column (1) is connected through the buckle plate (33). The end of the concave welded piece (32) is connected to the upper flange of the double-web cantilever beam (2) or the end of the vertical rib of the T-shaped steel (41) at the lower end of the Z-shaped energy dissipation device (4).
6. The steel structure beam-column joint of the dual energy dissipation device according to claim 1, characterized in that: The Z-shaped energy dissipation device (4) is composed of four equidistantly arranged Z-shaped plates (42), the upper and lower ends of which are welded to the top plate (43) and the vertical ribs of the T-shaped steel (41), the transverse ribs of the T-shaped steel (41) are bolted to the flanges of the H-shaped steel column (1), and the top plate (43) is placed below the composite energy dissipation device (5) and is bolted to the double-web cantilever beam (2) and the H-shaped frame beam (6).
7. The steel structure beam-column joint of the dual energy dissipation device according to claim 1, characterized in that: The composite energy dissipation device (5) is composed of an arc-shaped energy dissipator (51), a prestressed tendon (52) and a weakened cover plate (53). The two arc-shaped energy dissipators (51) are symmetrically arranged between the open pad (23) of the double-web cantilever beam (2) and the rectangular pad (61) of the H-shaped frame beam (6). A plurality of prestressed tendons (52) arranged in parallel respectively pass through the two side plates of the arc-shaped energy dissipator (51), the open pad (23) and the rectangular pad (61) to connect the double-web cantilever beam (2) and the H-shaped frame beam (6). The weakened cover plate (53) is respectively connected to the upper flanges of the double-web cantilever beam (2) and the H-shaped frame beam (6) by bolts.
8. The steel structure beam-column joint of the dual energy dissipation device according to claim 7, characterized in that: The arc-shaped energy dissipator (51) is composed of an arc-shaped plate with arc-shaped openings at the upper and lower ends arranged between two side plates.
9. The steel structure beam-column joint of the dual energy dissipation device according to claim 7, characterized in that: The weakened cover plate (53) has arc-shaped notches at positions corresponding to the arc-shaped energy dissipators (51) on both sides, and a rectangular hole groove matching the concave welding piece (32) is provided at one end thereof.