CN218970227U

CN218970227U - Efficiency amplifying friction type assembled beam column node

Info

Publication number: CN218970227U
Application number: CN202223249944.1U
Authority: CN
Inventors: 周云; 黄镇钦; 张超; 牛小楠
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2023-05-05
Anticipated expiration: 2032-12-01

Abstract

The utility model relates to the technical field of energy consumption components of building structures, in particular to a friction type assembled beam column node with amplified efficiency, which comprises a beam and an upright column, wherein one end of the beam is provided with two first connecting plates which are parallel to each other at intervals along the width direction of the beam, one side of the upright column is connected with a second connecting plate, one end of the second connecting plate, which is far away from the upright column, extends into the space between the two first connecting plates and is hinged with the two first connecting plates, and friction plates are arranged between the second connecting plate and the two first connecting plates. According to the technical scheme, the first connecting plate and the second connecting plate rotate, so that the friction interface of the friction plate forms a rotating friction force, thereby dissipating seismic energy, reducing damage and destruction of an earthquake to beam column nodes, solving the problem of poor seismic performance of the existing beam column nodes, improving the seismic performance of the beam column nodes and ensuring the use safety of a building.

Description

Efficiency amplifying friction type assembled beam column node

Technical Field

The utility model relates to the technical field of energy consumption components of building structures, in particular to a performance-amplifying friction type assembled beam column node.

Background

The traditional civil engineering mainly adopts a site construction method, the construction process is complex and has long period, a large amount of working space and manpower resources are required to be occupied, a large amount of building materials are consumed and a large amount of building garbage is generated at the same time, while the assembled building is realized by transferring a large amount of site operation work in the traditional construction mode to a factory, processing and manufacturing building components and accessories (such as floors, wallboards, stairs, balconies and the like) in the factory, transporting to a building construction site, and assembling and installing in the site by a reliable connection mode.

The beam column node in the building refers to the intersection of beams and columns in different directions, the existing assembled beam column node is connected by adopting a dry method, namely connecting parts are pre-buried in members, the connection of the beam column node is realized by adopting a bolt or welding mode and the like, however, the problem of insufficient rotation capability of the beam column node can be caused by adopting the bolt or welding mode between the beam and the column, under the action of an earthquake, the beam column node is subjected to the reciprocating load of the earthquake, the conditions of bolt slippage and pretension loss are very easy to occur, the integral earthquake resistance of the building is affected, the residual deformation after the earthquake of the building is excessively large, the collapse of the building can be even caused when the earthquake happens, and the serious potential safety hazard exists.

Disclosure of Invention

The utility model aims to provide an efficiency amplifying friction type assembled beam column node which is convenient to install and high in practicability, and can dissipate seismic energy, so that damage and destruction of the earthquake to the beam column node are reduced, the problem of poor seismic performance of the existing beam column node is solved, the seismic performance of the beam column node is improved, and the use safety of a building is ensured.

The utility model provides a performance-amplifying friction type assembled beam column node which comprises a beam and an upright column, wherein two first connecting plates which are parallel to each other are arranged at one end of the beam at intervals along the width direction of the beam, one side of the upright column is connected with a second connecting plate, one end of the second connecting plate, which is far away from the upright column, extends into the space between the two first connecting plates and is hinged with the two first connecting plates, and friction plates are arranged between the second connecting plate and the two first connecting plates.

Further, a plurality of shear nails distributed in an array are inserted into one ends, far away from each other, of the first connecting plate and the second connecting plate.

Further, the second connecting plates are hinged with the first connecting plates through pin shafts, and first through holes matched with the pin shafts are formed in the two first connecting plates;

the second connecting plate is provided with a second through hole matched with the pin shaft at a position corresponding to the first through hole, the pin shaft penetrates through the first through hole and the second through hole, and nuts are arranged at two ends of the pin shaft.

Further, the friction plate is fixed between the first connection plate and the second connection plate by a mounting bolt.

Further, two arc-shaped grooves are formed in the second connecting plate, and three connecting through holes are formed in positions, corresponding to the two arc-shaped grooves, of the two first connecting plates.

Further, the two arc grooves take the center of the circle of the second through hole as the center of the circle.

Further, bolt through holes are formed in positions, corresponding to the connecting through holes, of the friction plate, and the mounting bolts penetrate through the connecting through holes, the bolt through holes and the arc-shaped grooves.

Further, the apertures of the connecting through holes and the bolt through holes are smaller than the width of the arc-shaped groove.

Further, buffer components are arranged between two ends of the mounting bolt and the two first connecting plates.

Further, the buffer assembly comprises two gaskets sleeved on the outer sides of the mounting bolts, and a plurality of belleville springs are sleeved between the two gaskets on the outer sides of the mounting bolts.

The utility model has the beneficial effects that:

according to the technical scheme, the upright posts and the cross beams are hinged through the first connecting plate and the second connecting plate, and under the action of strong vibration, the first connecting plate and the second connecting plate rotate to cause the friction interface of the friction plate to form a rotating friction force, so that earthquake energy is dissipated, the damage and the damage of the earthquake to beam column nodes are reduced, the problem that the existing beam column nodes are poor in anti-seismic performance is solved, the anti-seismic performance of the beam column nodes is improved, and the safety in use of a building is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a friction-type assembled beam-column joint with enlarged efficiency according to embodiment 1 of the present utility model;

FIG. 2 is a front view of a friction-type fabricated beam-column joint with enlarged performance according to embodiment 1 of the present utility model;

fig. 3 is a schematic structural view of a first connection board and a second connection board in embodiment 1 of the present utility model;

fig. 4 is a schematic structural view of a first connection board in embodiment 1 of the present utility model;

fig. 5 is a schematic structural diagram of a second connecting plate in embodiment 1 of the present utility model;

FIG. 6 is a schematic view showing the structure of a friction plate according to embodiment 1 of the present utility model;

FIG. 7 is a schematic view showing the structure of the cross beam and the first connecting plate in embodiment 1 of the present utility model;

fig. 8 is a schematic structural view of the upright post and the second connecting plate in embodiment 1 of the present utility model.

Reference numerals illustrate:

1-upright post, 2-crossbeam, 3-first connecting plate, 4-second connecting plate, 5-friction plate, 6-round pin axle, 7-gasket, 8-mounting bolt, 9-belleville spring, 10-first through-hole, 11-shear pin, 12-connecting through-hole, 13-second through-hole, 14-arc wall, 15-bolt through-hole.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1 to 8, an efficiency amplifying friction type assembled beam column node comprises a column 1 and a cross beam 2, wherein the column 1 and the cross beam 2 are formed by concrete pouring, two first connecting plates 3 which are parallel to each other are arranged at one end of the cross beam 2 along the width direction at intervals, the cross beam 2 and the first connecting plates 3 are integrally poured and formed, six shear nails 10 which are distributed in array are inserted into one end of each first connecting plate 3, a second connecting plate 4 which is parallel to the first connecting plates 3 is arranged on one side of the column 1, the column 1 and the second connecting plates 4 are integrally poured and formed, ten shear nails 10 which are distributed in array are inserted into one end of each second connecting plate 4 which is embedded into the column 1, one end of each second connecting plate 4 which is far away from the column 1 extends between the two first connecting plates 3 and is hinged with the two first connecting plates 3, friction plates 5 are arranged between each second connecting plate 4 and the two first connecting plates 3, each friction plate 5 can be made of wear-resistant steel, bearing steel, nonmetallic composite materials or aramid fiber composite materials, and the thickness of each friction plate 5 is equal to the thickness of each first connecting plate 4 and the thickness of each friction plate 5.

The upright post 1 and the cross beam 2 are hinged through the first connecting plate 3 and the second connecting plate 4, under the strong vibration effect, the two first connecting plates 3 and the second connecting plate 4 rotate, so that the friction interface of the two friction plates 5 forms rotating friction force, thereby dissipating earthquake energy, reducing the damage and the damage of the earthquake to beam column nodes, solving the problem of poor earthquake resistance of the existing beam column nodes, improving the earthquake resistance of the beam column nodes, ensuring the use safety of a building, and the two first connecting plates 3 are embedded at one end in the cross beam 2, the second connecting plate 4 are embedded at one end in the upright post 1 and are respectively inserted with shear nails 10, so that the anchoring force between the first connecting plate 3 and the cross beam 2 and the anchoring force between the second connecting plate 4 and the upright post 1 are improved.

The second connecting plate 4 is hinged with the two first connecting plates 3 through the pin shafts 6, the two first connecting plates 3 are respectively provided with a first through hole 10 matched with the pin shafts 6, the position of the second connecting plate 4 corresponding to the first through holes 10 is provided with a second through hole 13 matched with the pin shafts 6, the pin shafts 6 penetrate through the first through holes 10 and the second through holes 13, and nuts (not shown in the figure) are respectively arranged at two ends of the pin shafts 6.

One end of the second connecting plate 4 far away from the upright post 1 stretches into the space between the two first connecting plates 1, the second through holes 13 are aligned with the first through holes 10, one end of the pin shaft 6 sequentially penetrates through the first through holes 10, the second through holes 13 and the first through holes 10 and is fixed through nuts at two ends of the pin shaft 6, so that the second connecting plate 4 is hinged with the two first connecting plates 3, and axial force and shearing force of a beam column node under the normal use process and the earthquake action are borne and transferred.

The friction plate 5 is fixed between the first connecting plate 3 and the second connecting plate 4 through the mounting bolt 8, the mounting bolt 8 is preferably a high-strength bolt, two arc grooves 14 taking the circle center of the second through holes 13 as the circle center are arranged on the second connecting plate 4, three connecting through holes 12 are respectively arranged at the positions of the two first connecting plates 3 corresponding to the two arc grooves 14, bolt through holes 15 are respectively arranged at the positions of the friction plate 5 corresponding to the connecting through holes, the mounting bolt 8 penetrates through the connecting through holes 12, the bolt through holes 15 and the arc grooves 14, and the apertures of the connecting through holes 12 and the bolt through holes 15 are respectively smaller than the width of the arc grooves 14.

One end of the mounting bolt 8 sequentially passes through the connecting through hole 12, the bolt through hole 15, the arc-shaped groove 14, the bolt through hole 15 and the connecting screw hole 12, so that the friction plate 5 is fixed between the first connecting plate 3 and the second connecting plate 4, the mounting bolt 8 is in close contact with the first connecting plate 3 and the friction plate 5, when the first connecting plate 3 rotates, the friction plate 5 can be driven to cooperatively move to perform friction energy consumption, the width of the arc-shaped groove 14 is larger than the aperture of the connecting through hole 12 and the aperture of the bolt through hole 15, a certain axial displacement space can be provided for the mounting bolt 8, local deformation is avoided to hinder the normal work of the first connecting plate 3, the second connecting plate 4 and the friction plate 5, in addition, after an earthquake, a worker only needs to replace the friction plate 5, the normal use function of a beam-column node can be quickly restored, and the post earthquake repair cost is low;

besides, the bearing capacity of the first connecting plate 3 and the second connecting plate 4 can be improved by increasing the distance between the friction plate 5 and the pin shaft 6 for the following reasons: as can be seen from the bending moment calculation formula m=fl and the coulomb friction theory f=μn, when the friction coefficient μ of the friction plate 5 and the applied pre-pressure N are constant, the friction force F is constant, and when the distance L between the friction plate 5 and the pin shaft 6 increases, in order to drive the first connecting plate 3 and the second connecting plate 4 to generate rotational deformation, a larger vertical force needs to be provided at the end portions of the first connecting plate 3 and the second connecting plate 4 to overcome the rotational bending M generated by the friction force, namely, the bearing capacity of the first connecting plate 3 and the second connecting plate 4 is improved.

The two ends of the mounting bolt 8 and the two first connecting plates 3 are respectively provided with a buffer assembly, each buffer assembly comprises two gaskets 7 sleeved on the outer sides of the mounting bolts 8, and four belleville springs 9 are sleeved between the two gaskets 7 on the outer sides of the mounting bolts 8.

The friction plate 5 is provided with stable pre-compression force through the mounting bolts 8 so as to ensure reliable friction energy consumption capability of the friction plate 5, and meanwhile, the disc springs 9 can effectively reduce fluctuation and loss of the pre-compression force provided by the mounting bolts 8.

Working principle: the two first connecting plates 3 and the second connecting plates 4 are rotated to drive the two friction plates 5 to rotate, friction and energy consumption are reduced, damage and damage to beam column joints caused by earthquakes are reduced, meanwhile, the bearing capacity and energy consumption capacity of the first connecting plates 3 and the second connecting plates 4 can be improved by increasing the distance between the friction plates 5 and the pin shafts 6, in addition, under the same bearing capacity requirement, the pre-pressure applied by the mounting bolts 8 can be properly reduced on the basis of increasing the distance between the friction plates 5 and the pin shafts 6, and the loss of the pre-pressure of the high-strength bolts 8 in a non-working state and a working state is effectively reduced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The utility model provides a friction-type assembled beam column node is amplified to efficiency, its characterized in that includes crossbeam and stand, the one end of crossbeam is provided with two first connecting plates that are parallel to each other along its width direction interval, one side of stand is connected with the second connecting plate, the second connecting plate is kept away from the one end of stand stretches into two between the first connecting plate to with two first connecting plate articulates, all be equipped with the friction plate between second connecting plate and the two first connecting plate.

2. The efficiency amplifying friction-type fabricated beam-column node of claim 1, wherein a plurality of shear nails distributed in an array are inserted into the ends of the first connecting plate and the second connecting plate, which are far away from each other.

3. The efficiency amplification friction type assembled beam column node according to claim 1, wherein the second connecting plate is hinged with the first connecting plates through pin shafts, and first through holes matched with the pin shafts are formed in the two first connecting plates;

4. A performance amplifying friction-type fabricated beam-column node according to claim 3, wherein said friction plate is secured between said first and second connection plates by mounting bolts.

5. The friction-type fabricated beam column node with amplified performance according to claim 4, wherein two arc-shaped grooves are formed in the second connecting plate, and three connecting through holes are formed in positions, corresponding to the two arc-shaped grooves, of the two first connecting plates.

6. The friction fit-on beam-column joint of claim 5, wherein both of the arcuate slots are centered about the center of the second through hole.

7. The friction-type fabricated beam-column joint according to claim 5, wherein bolt through holes are formed in positions of the friction plates corresponding to the connecting through holes, and the mounting bolts penetrate through the connecting through holes, the bolt through holes and the arc-shaped grooves.

8. The performance amplifying friction-type fabricated beam-column node of claim 7 wherein the apertures of the connecting through-holes and the bolt through-holes are each smaller than the width of the arcuate slot.

9. The friction-type fabricated beam-column joint according to claim 8, wherein a buffer assembly is disposed between each of the two ends of the mounting bolt and the two first connecting plates.

10. The friction-type fabricated beam-column joint with amplified performance according to claim 9, wherein the buffer assembly comprises two gaskets sleeved outside the mounting bolts, and a plurality of belleville springs are sleeved between the two gaskets outside the mounting bolts.