CN210086473U - Assembly type dry connection node with multi-direction shock absorber - Google Patents
Assembly type dry connection node with multi-direction shock absorber Download PDFInfo
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- CN210086473U CN210086473U CN201920581101.0U CN201920581101U CN210086473U CN 210086473 U CN210086473 U CN 210086473U CN 201920581101 U CN201920581101 U CN 201920581101U CN 210086473 U CN210086473 U CN 210086473U
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Abstract
The utility model discloses an assembled dry connecting node with a multidirectional shock absorber, which comprises a prefabricated ox leg column, a prefabricated beam and a viscoelastic shock absorber; the viscoelastic damper is arranged on a bracket of the prefabricated bracket column through a limiting structure, the limiting structure is used for limiting the vertical displacement of the viscoelastic damper, and the viscoelastic damper is fixedly connected with the prefabricated beam; the middle end parts of the prefabricated cow leg columns and the prefabricated beams are provided with embedded steel plates, and the beam columns are welded and fixed through the embedded steel plates; the viscoelastic damper comprises a plurality of constraint steel plates and a plurality of shearing steel plates, wherein the constraint steel plates and the shearing steel plates are sequentially and alternately arranged, the constraint steel plates are arranged on the outer sides of the shearing steel plates, viscoelastic damping blocks are arranged between the constraint steel plates and the shearing steel plates, and the viscoelastic damping blocks are respectively in adhesive connection with the constraint steel plates and the shearing steel plates. This beam column dry connect node can effectually weaken the earthquake effect and influence the destruction of beam column welded joint to effectively improve the poor problem of resilience nature and ductility that current dry connect welded joint exists.
Description
Technical Field
The utility model relates to a take assembled dry joint node of multi-direction bumper shock absorber belongs to assembly type building structure technical field.
Background
The assembly type structure has the advantages of good quality, high production efficiency, low labor intensity of workers, environmental protection and the like, and is beneficial to the sustainable development of the society. The assembled structure beam column node has dry connection and wet connection, and the wet connection node has good anti-seismic performance and is basically close to the performance of a cast-in-place concrete node. However, the post-cast joint has a narrow working space, so that the difficulty of stirrup setting and concrete pouring is greatly increased, and the construction quality is difficult to ensure. The dry connection node can ensure the structural rigidity and bearing capacity of the beam column, is similar to a cast-in-place structure, but has poor resilience and ductility, is difficult to prevent the damage generated under the action of earthquake load, has the characteristic of convenient construction compared with wet connection, and more accords with the trend of building industrialization development.
The dry connection mode mainly comprises bracket connection, welding, bolt connection and the like, and because the bearing capacity of the bracket is very high and the vertical force can be reliably transmitted, the bracket connection mode is quite common in dry connection. After the precast beam is lapped on the bracket, the precast beam is usually combined in a welding or bolt connection mode, the bolt connection has high precision on the component manufacturing, the precast beam must be manufactured accurately, and the precast beam must be protected carefully in transportation and installation in order to avoid bending, thread damage and pollution, so that the development of a welding connection structure with good deformation performance is a development direction of the dry connection of the assembly type building, and therefore, the development of a connection node which can effectively improve the ductility and resilience of the welding node of the assembly type building and is convenient to construct is necessary.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a take assembled dry joint node of multi-direction bumper shock absorber is provided, this assembled beam column connected node can effectually weaken the destruction influence of seismic action to beam column welded node to effectively improve the poor problem of resilience and ductility that current dry joint welded node exists.
For solving the technical problem, the utility model discloses the technical scheme who adopts does:
an assembled dry connecting node with a multidirectional shock absorber comprises a prefabricated bracket column, a prefabricated beam and a viscoelastic shock absorber; the viscoelastic damper is arranged on a bracket of the prefabricated bracket column through a limiting structure, the limiting structure is used for limiting the vertical displacement of the viscoelastic damper, and the viscoelastic damper is fixedly connected with the prefabricated beam; the middle end parts of the prefabricated cow leg columns and the prefabricated beams are provided with embedded steel plates, and the beam columns are welded and fixed through the embedded steel plates; the viscoelastic damper comprises a plurality of constraint steel plates and a plurality of shearing steel plates, wherein the constraint steel plates and the shearing steel plates are sequentially and alternately arranged, the constraint steel plates are arranged on the outer sides of the shearing steel plates, viscoelastic damping blocks are arranged between the constraint steel plates and the shearing steel plates, and the viscoelastic damping blocks are respectively in adhesive connection with the constraint steel plates and the shearing steel plates.
Wherein the constraint steel plate, the shearing steel plate and the viscoelastic damping block are parallel to each other.
Wherein, limit structure is equipped with spacing draw-in groove including the arch of restraint steel sheet lower part and fixing the spacing steel sheet on the bracket on the spacing steel sheet, protruding embedding spacing draw-in groove, and the restraint steel sheet is connected through spacing draw-in groove and spacing steel sheet mutually supporting.
The end part of the precast beam is provided with an embedded channel steel, and the inner side of the embedded channel steel is fixedly welded with the upper pull rib and the lower pull rib in the precast beam; the outer side of the embedded channel steel is fixedly welded with an embedded steel plate on the prefabricated bracket column.
Wherein, the shearing steel plate top is equipped with the connecting steel plate of taking the bolt hole, and connecting steel plate passes through bolt fixed connection with the pre-buried channel-section steel of precast beam tip.
And the contact surfaces of the constraint steel plate and the viscoelastic damping block and the contact surfaces of the shearing steel plate and the viscoelastic damping block are respectively provided with a constraint structure.
The constraint structure is a connecting groove arranged on the contact surface of the constraint steel plate and the shearing steel plate and the viscoelastic damping block, and the size of the connecting groove is the same as the shape and the size of the viscoelastic damping block.
Wherein, the groove depth of spread groove is 4 ~ 8 mm.
The viscoelastic damping block, the constraint steel plate and the shearing steel plate are fixed by gluing; the glue is epoxy resin glue, and the thickness of glue film is 1 ~ 2 mm.
And the bent steel bars are embedded in the prefabricated bracket columns and combined with the column steel bar cages in the prefabricated bracket columns in a binding manner.
The utility model discloses assembled beam column connected node is equipped with the viscoelastic bumper shock absorber of power consumption damping, when the earthquake takes place, the welding seam can appear in the welded node of beam column to precast beam can rock relative precast column, thereby drive the viscoelastic bumper shock absorber of being connected with precast beam fixed connection and rock, and the viscoelastic bumper shock absorber realizes the dissipation to seismic energy through the shearing motion of viscoelastic damping piece this moment, thereby delays the speed that the node welding seam ftractures; in addition, reach limit activity distance when the viscoelastic damper, when the viscoelastic damping piece became invalid promptly, can form rigid body structure with the bracket to increase the rigidity of node, the utility model discloses can effectively improve the poor problem of restoring force nature and ductility that current dry joint welding node exists.
Compared with the prior art, the utility model discloses technical scheme has beneficial effect does:
on one hand, aiming at the problem of poor ductility of the existing corbel connection welding joint, the viscoelastic damper for energy dissipation and vibration reduction is arranged at the assembly type beam column connection joint of the utility model, so that the cracking speed of the welding seam can be effectively delayed, instant brittle failure is avoided, and a novel dry connection joint with the energy dissipation and vibration reduction effects is formed; on the other hand, the utility model discloses viscoelastic bumper shock absorber among assembled beam column connected node reaches the limit movement distance in the earthquake after, forms rigid body structure together with the bracket to increase the rigidity of node.
Drawings
Fig. 1 is a schematic structural view of the assembled beam-column connection joint of the present invention;
FIG. 2 is a schematic structural view of the prefabricated ox leg column of the present invention;
FIG. 3 is a schematic structural view of the prefabricated bracket post cylinder of the present invention;
FIG. 4 is a schematic structural view of a pre-buried steel plate on the prefabricated ox leg column of the present invention;
FIG. 5 is a schematic structural view of a limiting steel plate on a bracket of the present invention;
FIG. 6 is a schematic structural view of the precast beam of the present invention;
FIG. 7 is a schematic structural view of the viscoelastic damper of the present invention;
FIG. 8 is a schematic structural view of the outermost constraining steel plates of the viscoelastic damper of the present invention, wherein the two outermost constraining steel plates are symmetrically arranged;
FIG. 9 is a schematic structural view of a constraint steel plate in the middle of the viscoelastic damper of the present invention;
FIG. 10 is a schematic view of the structure of the shear steel plate in the viscoelastic damper of the present invention;
FIG. 11 is a schematic structural view of a viscoelastic damping block in the viscoelastic damper of the present invention;
FIG. 12 is a perspective view of FIG. 1;
fig. 13 is a schematic view of the structure of fig. 12 without precast beams.
Detailed Description
The invention will be better understood from the following examples. However, those skilled in the art will readily appreciate that the description of the embodiments is only for illustrating the present invention and should not be taken as limiting the invention as detailed in the claims.
As shown in fig. 1, the assembled beam-column connection node with the multi-directional shock absorber of the present invention comprises a prefabricated bracket column 1, a prefabricated beam 2 and a viscoelastic shock absorber 3; the viscoelastic damper 3 is arranged on a bracket 1-6 of the prefabricated bracket column 1 through a limiting structure, the limiting structure is used for limiting the vertical displacement of the viscoelastic damper 3, the viscoelastic damper 3 is fixedly connected with the prefabricated beam 2, a connecting steel plate 3-9 with a bolt hole 3-5 is arranged at the top of a shearing steel plate 3-4, and the connecting steel plate 3-9 is fixedly connected with the embedded channel steel 2-1 at the end part of the prefabricated beam 2 through a bolt; the prefabricated ox leg column 1 is provided with pre-buried steel plates 1-2, and the prefabricated beam 2 and the pre-buried steel plates 1-2 are fixed through welding; the viscoelastic damper 3 comprises a plurality of constraint steel plates 3-1 and a plurality of shearing steel plates 3-4, the constraint steel plates 3-1 and the shearing steel plates 3-4 are sequentially and alternately arranged, the constraint steel plates 3-4 are arranged on the outer sides of the shearing steel plates 3-4, viscoelastic damping blocks 3-6 are arranged between the constraint steel plates 3-1 and the shearing steel plates 3-4, and the viscoelastic damping blocks 3-6 are respectively in adhesive connection with the constraint steel plates 3-1 and the shearing steel plates 3-4; the constraint steel plate 3-1, the shearing steel plate 3-4 and the viscoelastic damping block 3-6 in the viscoelastic damper 3 are parallel to each other.
As shown in FIGS. 2-5, the utility model discloses a prefabricated ox leg post 1 is for taking pre-buried steel sheet precast concrete ox leg post, including ox leg post cylinder 1-1 and the bracket 1-6 of setting on ox leg post cylinder 1-1, still include pre-buried steel sheet 1-2 and spacing steel sheet 1-3, pre-buried steel sheet 1-2 sets up in the top of bracket 1-6, spacing steel sheet 1-3 is fixed on ox leg 1-6, is equipped with spacing draw-in groove 1-4 on the spacing steel sheet 1-3, has welded the angle bar 1-5 in the inboard of pre-buried steel sheet 1-2, angle bar 1-5 inlays in prefabricated ox leg post 1 and makes up with the post steel reinforcement cage ligature in the prefabricated ox leg post 1.
The limiting structure comprises a protrusion 3-7 at the lower part of the limiting steel plate 3-1(3-2, 3-3) and a limiting steel plate 1-3 fixed on the bracket 1-6, a limiting clamping groove 1-4 is formed in the limiting steel plate 1-3, the protrusion 3-7 is embedded into the limiting clamping groove 1-4, and the limiting steel plate 3-1(3-2, 3-3) is mutually matched and connected with the limiting steel plate 1-3 through the limiting clamping groove 1-4.
As shown in fig. 6, the precast beam 2 of the utility model is a precast concrete beam with a pre-buried steel plate, the end of the precast beam 2 is provided with a pre-buried channel steel 2-1, and the inner side of the pre-buried channel steel 2-1 is fixed with the upper and lower pull ribs in the precast beam 2 by welding; the outer side of the embedded channel steel 2-1 is fixedly welded with an embedded steel plate 1-2 on the prefabricated ox leg column 1, and a welding node is formed by welding a column end embedded steel plate 1-2 on the prefabricated ox leg column 1 and a beam end embedded channel steel 2-1 on the prefabricated beam 2; the inner sides of the embedded steel plates 1-2 are welded with bent steel bars 1-5, and the bent steel bars 1-5 are embedded in the prefabricated bracket columns 1.
As shown in fig. 7 to 11, in the embodiment of the present invention, the viscoelastic damper 3 includes three constraining steel plates and two shearing steel plates 3-4, wherein the two constraining steel plates 3-1(3-3) located at the outer side and 3-2 located at the middle are included, the constraining steel plate 3-1(3-3) at the outer side is shown in fig. 8, and the constraining steel plate 3-2 at the middle is shown in fig. 9. The shearing steel plates 3-4, the constraint steel plates 3-1(3-2, 3-3) and the viscoelastic damping blocks 3-6 in the viscoelastic damper 3 can adjust the corresponding layer number and thickness according to the size of the actual engineering or the requirements of the rigidity and energy consumption of the damper.
The contact surfaces of the constraint steel plates 3-1(3-2, 3-3) and the viscoelastic damping blocks 3-6 and the contact surfaces of the shearing steel plates 3-4 and the viscoelastic damping blocks 3-6 are respectively provided with a constraint structure 3-8, the constraint structures 3-8 can constrain the viscoelastic damping blocks 3-6 after being extruded and deformed, the constraint structures 3-8 are connecting grooves arranged on the contact surfaces of the constraint steel plates 3-1(3-2, 3-3) and the shearing steel plates 3-4 and the viscoelastic damping blocks 3-6, the size of the connecting grooves is the same as the shape and size of the viscoelastic damping blocks 3-6, and the depth of the connecting grooves is 4-8 mm. The viscoelastic damping blocks 3-6, the constraint steel plates 3-1(3-2, 3-3) and the shearing steel plates 3-4 are fixed by gluing, the glue is epoxy resin glue, and the thickness of the glue layer is 1-2 mm.
The multi-direction is due to the structure dynamic effect caused by earthquake, the horizontal earthquake effect and the vertical earthquake effect are divided, and the viscoelastic damper 3 can generate shearing energy consumption in the horizontal direction and the vertical direction under the action of earthquake force.
The utility model discloses take precast concrete bracket post of embedded steel plate 1 to accomplish in the prefabrication of mill, four curved reinforcing bars 1-5 are welded to the embedded steel plate 1-2 of column end, with the position of post steel reinforcement cage ligature combination and arranging post cross-section positive center notch in, 1-6 tops of prefabricated post bracket are arranged in to spacing steel sheet 1-3, be equipped with spacing draw-in groove 1-4 on the spacing steel sheet 1-3, spacing draw-in groove 1-4 cooperatees with the arch 3-7 of the restraint steel sheet 3-1(3-2, 3-3) lower part of viscoelastic damper 3 and is connected for the vertical displacement of restriction viscoelastic damper 3. After the viscoelastic damper 3 is installed, the precast concrete beam 2 with the embedded steel plate and the precast concrete cow-leg column 1 with the embedded steel plate are in centering welding combination through the embedded steel plates at the respective ends, in the process, the precast beam 2 is in contact with the viscoelastic damper 3 but is not stressed, then bolts penetrate through reserved bolt holes 3-4 of shearing steel plates 3-5 of the viscoelastic damper 3 and reserved bolt holes 2-1 of embedded channel steel 2-1 of the precast beam 2 to be fixed, the shearing steel plate 3-4 in the middle of the viscoelastic damper 3 is driven to rotate by the rotation of the precast beam 2 under the action of an earthquake, so that the shearing energy consumption of middle viscoelastic materials is generated, and the cracking of a welding seam of the column beam is delayed; when the viscoelastic damper 3 fails, the viscoelastic damper 3 is replaced by loosening the fastening bolts of the shearing steel plates 3-4 and the embedded channel steel 2-1 of the precast beam 2 and pulling out the viscoelastic damper 3 from the bracket limiting clamping grooves 1-4. The viscoelastic damper 3 is assembled by respectively placing viscoelastic damping blocks 3-6 in middle grooves (constraint structures 3-8) of constraint steel plates 3-1(3-2, 3-3) and shear steel plates 3-4 and gluing and molding the viscoelastic damping blocks by epoxy resin. The viscoelastic material in the viscoelastic damper 3 may be replaced by a composite layer of rubber and a thin steel plate.
The viscoelastic damper 3 of the utility model is firstly connected and fixed with the limiting steel plates 1-3, and then the precast beam 2 and the precast cow leg column 1 are butt-welded through the end pre-buried steel plates, the precast beam 2 is in contact with the viscoelastic damper 3 but does not generate force, and finally bolts penetrate through reserved bolt holes of a shearing steel plate 3-4 in the middle of the viscoelastic damper 3 and bolt holes of the embedded channel steel 2-1 to be connected, so that the whole connection process avoids the grouting and maintenance links of the traditional wet connection, the construction period is saved, energy consumption and shock absorption in multiple directions can be realized, meanwhile, the cracking of joint welding seams can be delayed under the action of earthquake, after the viscoelastic damper 3 reaches the limit position and moves, the viscoelastic damper 3 and the prefabricated bracket column 1 form a rigid structure, so that the welding line is prevented from cracking continuously, the rigidity of the node is increased, and the safety performance of a building can be effectively improved. In the process of transverse or vertical rotation of the beam-column joint, the middle shearing steel plate 3-4 of the viscoelastic damper 3 is driven to rotate simultaneously, the shearing energy consumption between the shearing steel plate 3-4 and the composite viscoelastic layer is reduced, the cracking of a welding line is delayed, the damage to the frame beam-column joint in the vibration process is reduced, when the viscoelastic damper 3 reaches the limit movement distance, a rigid structure can be formed with the bracket, the rigidity of the joint is increased, and a dry connection joint with the vibration damping and energy consumption functions is formed.
Claims (10)
1. The utility model provides a take assembled dry joint node of multi-direction bumper shock absorber which characterized in that: the device comprises a prefabricated ox leg column, a prefabricated beam and a viscoelastic damper; the viscoelastic damper is arranged on a bracket of the prefabricated bracket column through a limiting structure, the limiting structure is used for limiting the vertical displacement of the viscoelastic damper, and the viscoelastic damper is fixedly connected with the prefabricated beam; the middle end parts of the prefabricated cow leg columns and the prefabricated beams are provided with embedded steel plates, and the beam columns are welded and fixed through the embedded steel plates at the end parts; the viscoelastic damper comprises a plurality of constraint steel plates and a plurality of shearing steel plates, wherein the constraint steel plates and the shearing steel plates are sequentially and alternately arranged, the constraint steel plates are arranged on the outer sides of the shearing steel plates, viscoelastic damping blocks are arranged between the constraint steel plates and the shearing steel plates, and the viscoelastic damping blocks are respectively in adhesive connection with the constraint steel plates and the shearing steel plates.
2. The fabricated dry-connect node with multi-directional shock absorber of claim 1, wherein: the constraint steel plate, the shearing steel plate and the viscoelastic damping block are parallel to each other.
3. The fabricated dry-connect node with multi-directional shock absorber of claim 1, wherein: the limiting structure comprises a protrusion at the lower part of the constraint steel plate and a limiting steel plate fixed on the bracket, a limiting clamping groove is formed in the limiting steel plate, the protrusion is embedded into the limiting clamping groove, and the constraint steel plate is connected with the limiting steel plate in a mutually matched mode through the limiting clamping groove.
4. The fabricated dry-connect node with multi-directional shock absorber of claim 3, wherein: the end part of the precast beam is provided with an embedded channel steel, and the inner side of the embedded channel steel is fixedly welded with the upper pull rib and the lower pull rib in the precast beam; the outer side of the embedded channel steel is fixedly welded with an embedded steel plate on the prefabricated bracket column.
5. The fabricated dry-connect node with multi-directional shock absorber of claim 4, wherein: the top of the shearing steel plate is provided with a connecting steel plate with a bolt hole, and the connecting steel plate is fixedly connected with the embedded channel steel at the end part of the precast beam through a bolt.
6. The fabricated dry-connect node with multi-directional shock absorber of claim 5, wherein: and the contact surfaces of the constraint steel plate and the viscoelastic damping block and the contact surfaces of the shearing steel plate and the viscoelastic damping block are provided with constraint structures.
7. The fabricated dry-connect node with multi-directional shock absorber of claim 6, wherein: the constraint structure is a connecting groove arranged on the contact surface of the constraint steel plate and the shearing steel plate and the viscoelastic damping block, and the size of the connecting groove is the same as the shape and the size of the viscoelastic damping block.
8. The fabricated dry-connect node with multi-directional shock absorber of claim 7, wherein: the groove depth of the connecting groove is 4-8 mm.
9. The fabricated dry-connect node with multi-directional shock absorber of claim 1, wherein: the viscoelastic damping block, the constraint steel plate and the shearing steel plate are fixed by gluing; the glue is epoxy resin glue, and the thickness of glue film is 1 ~ 2 mm.
10. The fabricated dry-connect node with multi-directional shock absorber of claim 1, wherein: and the bent-up reinforcing steel bars are welded on the inner sides of the embedded steel plates, embedded in the prefabricated ox leg columns and combined with the column reinforcing steel bar cages in the prefabricated ox leg columns in a binding mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581101.0U CN210086473U (en) | 2019-04-25 | 2019-04-25 | Assembly type dry connection node with multi-direction shock absorber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581101.0U CN210086473U (en) | 2019-04-25 | 2019-04-25 | Assembly type dry connection node with multi-direction shock absorber |
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| CN210086473U true CN210086473U (en) | 2020-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145020A (en) * | 2019-04-25 | 2019-08-20 | 东南大学 | A kind of dry connecting node of the assembled of the multi-direction damper of band |
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2019
- 2019-04-25 CN CN201920581101.0U patent/CN210086473U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110145020A (en) * | 2019-04-25 | 2019-08-20 | 东南大学 | A kind of dry connecting node of the assembled of the multi-direction damper of band |
| CN110145020B (en) * | 2019-04-25 | 2024-06-25 | 东南大学 | Assembled dry connection node with multidirectional shock absorber |
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