CN210105018U - Assembled self-resetting friction energy dissipation supporting member with variable prestress - Google Patents

Assembled self-resetting friction energy dissipation supporting member with variable prestress Download PDF

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Publication number
CN210105018U
CN210105018U CN201920597095.8U CN201920597095U CN210105018U CN 210105018 U CN210105018 U CN 210105018U CN 201920597095 U CN201920597095 U CN 201920597095U CN 210105018 U CN210105018 U CN 210105018U
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steel
tube
steel pipe
friction
self
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陈永盛
张令心
李青岳
刘洁平
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INSTITUTE OF ENGINEERING MECHANICS CHINA SEISMOLOGICAL BUREAU
Institute of Engineering Mechanics China Earthquake Administration
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INSTITUTE OF ENGINEERING MECHANICS CHINA SEISMOLOGICAL BUREAU
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Abstract

The utility model provides an assembled self-resetting friction energy dissipation supporting member with variable prestress, which comprises a circular steel pipe, a rectangular steel pipe, a cover plate, a channel steel, a disc spring and friction angle steel, wherein the middle of the long sides of the cross sections of the two ends of the rectangular steel pipe is provided with a notch, the circular steel pipe is sleeved on the inner side of the rectangular steel pipe and is welded and fixed with the rectangular steel pipe at the notch of the rectangular steel pipe to form an inner pipe; the disc springs are provided with two disc springs which are respectively sleeved at two ends of the round steel pipe; the channel steel is divided into two groups, and the two groups of channel steel are symmetrically and fixedly connected between the two cover plates through connecting bolts to form an outer pipe; through friction angle steel swing joint between inner tube and the outer tube, the utility model discloses utilize friction angle steel swing joint between the outer tube through bolt fixed connection between the inner tube that will form through circular steel pipe and rectangle steel pipe welded fastening and apron and the channel-section steel to make overall structure be the assembled, both be convenient for utilize the friction angle steel to accomplish the antidetonation effect, be convenient for again after the vibrations quick restoration and change.

Description

Assembled self-resetting friction energy dissipation supporting member with variable prestress
Technical Field
The utility model belongs to the technical field of the engineering antidetonation component, concretely relates to variable prestressing force of assembled friction power consumption supporting component from restoring to throne.
Background
Bracing is one of the important side force resisting members in high-rise building structures. It can also dissipate energy under the action of earthquake, and avoid the serious damage of main structure. Buckling phenomenon can be generated when the common support is pressed, and the rigidity and the bearing capacity of the common support can be sharply reduced after buckling, so that the hysteresis performance of the common support is poor. Meanwhile, the traditional support design is controlled stably, the support length-to-fineness ratio is limited strictly usually, but the section size of the support is increased, so that the seismic effect of the structure is enhanced, the section size of the beam column is enlarged, and the manufacturing cost of the whole project is increased.
In order to solve the problem of buckling of a common support under pressure, a sleeve is additionally arranged outside the support to inhibit the buckling of the support under pressure, so that the buckling-restrained support is formed. The buckling-restrained brace is an axial stress component which can achieve full-section yielding no matter in tension or compression, not only can provide necessary lateral stiffness, but also can reduce the vibration reaction of the structure under the action of rare earthquakes through the energy consumption of axial yielding. However, the buckling restrained brace has the disadvantage that when the bearing capacity of the inner core is zero after yielding, the deformation is not zero, which brings large residual deformation to the structure and influences the repair and replacement after earthquake.
The self-resetting energy dissipation support can dissipate earthquake energy, reduce the overall reaction of the structure, and can approximately recover to a balance position after earthquake, so that the residual deformation of the structure is reduced, the repair or replacement cost of the component is reduced, and the recoverability of the structure is improved.
In the last decade, scholars at home and abroad develop various self-resetting energy dissipation supports, some adopt prestressed tendons as resetting elements, some adopt shape memory alloys as resetting elements, and some adopt disc springs as resetting elements. Although the self-reset energy consumption effect can be realized by the supports, the following defects still exist:
1. all parts of the supporting member are welded comprehensively, so that the mounting and the dismounting are very troublesome;
2. in the design of a supporting structure, the bearing capacity of the support required by each floor is often different, and the prestress of the conventional supporting member cannot be adjusted, so that the application range of the supporting member is influenced;
3. the deformation capability of the prestressed tendon is poor, and the manufacturing cost of the shape memory alloy is high, so that the investment of engineering cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that lie in to above-mentioned prior art not enough, provide a variable prestressing force of assembled friction power consumption supporting component from restoring to throne to solve the problem that proposes in the above-mentioned background art.
In order to solve the technical problem, the utility model discloses a technical scheme is: an assembled self-resetting friction energy dissipation supporting member with variable prestress comprises a round steel pipe, a rectangular steel pipe, a cover plate, channel steel, a disc spring and friction angle steel, wherein notches are formed in the middles of long sides of the sections of two ends of the rectangular steel pipe, the round steel pipe is sleeved on the inner side of the rectangular steel pipe, and the round steel pipe is welded and fixed with the rectangular steel pipe at the notches of the rectangular steel pipe to form an inner pipe;
the two disc springs are respectively sleeved at two ends of the round steel pipe;
the number of the cover plates is two, the number of the channel steels is four, the channel steels are divided into two groups, and the two groups of channel steels are symmetrically and fixedly connected between the two cover plates through connecting bolts to form an outer pipe;
the friction angle steel is provided with four and its cross-section is the structure that L type both sides length equals, the inside even connection screw that sets up of one side of friction angle steel be used for with the rectangle steel pipe of inner tube between fixed connection, the inside even activity slotted hole that sets up of the apron swing joint who is used for with the outer tube of the opposite side of friction angle steel, through friction angle steel swing joint between inner tube and the outer tube.
Preferably, baffles are respectively sleeved at two ends of the disc spring on the outer side of the circular steel pipe, and the baffles are in sliding connection with the circular steel pipe.
Preferably, the end parts of the two ends of the cover plate are respectively and vertically welded and fixed with a plug, the two ends of the plug are in threaded connection with a puller bolt, and the inner section of the puller bolt abuts against the outer side of the outer side baffle of the disc spring.
Preferably, two anchoring flanges are symmetrically welded and fixed at positions, close to the end parts, of the two ends of the round steel pipe, tightening bolts are connected to the middles of the anchoring flanges in a threaded mode, and the inner side ends of the tightening bolts abut against the outer side ends of the baffle plates.
Preferably, one end of the circular steel pipe extends to the outer end of the inner pipe, and an end plate is welded and fixed to the end of the extending end of the circular steel pipe.
Preferably, four rib plates are uniformly welded and fixed at the joint of the round steel pipe and the end plate.
Preferably, four connecting angle steels are symmetrically welded and fixed at the outer side ends of the outer tubes on the outer sides of the two cover plates, and end plates are also welded and fixed at the outer side ends of the connecting angle steels.
Preferably, the length of the connecting angle steel is not less than the length of the round steel pipe extending out of the outer side of the cover plate.
Preferably, the shape of the movable slotted hole of the friction angle steel is oval.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses to utilize friction angle steel swing joint between the outer tube through bolt fixed connection between the inner tube that forms through circular steel pipe and rectangle steel pipe welded fastening and apron and the channel-section steel to make overall structure be the assembled, both be convenient for utilize the friction angle steel to realize energy dissipation absorbing effect, be convenient for again shake the back repair fast and change convenient and practical.
2. The utility model discloses a tighten the end cap department of apron and the puller bolt of the anchor flange department of circular steel pipe and can promote baffle extrusion dish spring and apply the precompression to can adjust the precompression of dish spring through screwing or loosening puller bolt, thereby make supporting mechanism can satisfy the needs of the different bearing capacities of different floors, widened supporting mechanism's range of application.
3. The utility model discloses an each part is metal product, has good durability, and its cost is lower, therefore is showing reduction manufacturing cost, has good economic benefits.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the structure at AA' of FIG. 1;
FIG. 3 is a sectional view of the structure at BB' in FIG. 1;
FIG. 4 is a sectional view of the structure of FIG. 1 at CC';
FIG. 5 is a cross-sectional view of the structure shown in FIG. 1 at DD';
FIG. 6 is a cross-sectional view of the structure at EE' of FIG. 1;
fig. 7 is a side view of the cover plate structure of the present invention;
FIG. 8 is a front view of the rectangular steel tube structure of the present invention;
fig. 9 is a side view of the friction angle iron of the present invention;
fig. 10 is a top view of the friction angle iron of the present invention;
fig. 11 is a schematic view of the installation and use structure of embodiment 2 of the present invention.
Description of reference numerals:
1-round steel pipe; 2-rectangular steel pipes; 3-cover plate; 4-channel steel; 5-disc spring; 6-a baffle plate; 7-anchoring a flange; 8-plug; 9-tightening the bolt; 10-friction angle steel; 101-connecting screw holes; 102-a movable slot; 11-an end plate; 12-a rib plate; 13-connecting angle steel; 14-column; 15-beam.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Embodiment 1, as shown in fig. 1-10, the utility model provides a technical solution: an assembled self-resetting friction energy dissipation supporting member with variable prestress comprises a round steel pipe 1, a rectangular steel pipe 2, a cover plate 3, channel steel 4, disc springs 5 and friction angle steel 10, wherein notches are formed in the middles of long sides of sections of two ends of the rectangular steel pipe 2, the round steel pipe 1 is sleeved on the inner side of the rectangular steel pipe 2, and the round steel pipe 1 and the rectangular steel pipe 2 are welded and fixed at the notches of the rectangular steel pipe 2 to form an inner pipe;
the dish spring 5 is provided with two and just cup joint respectively at the both ends of circular steel pipe 1, and baffle 6 has respectively been cup jointed in the outside of circular steel pipe 1 in the punishment of dish spring 5 both ends, sliding connection between baffle 6 and the circular steel pipe 1, forms canceling release mechanical system between baffle 6 and the dish spring 5.
The end parts of the two ends of the cover plate 3 are respectively and vertically welded and fixed with plugs 8, the two ends of each plug 8 are in threaded connection with puller bolts 9, the inner side sections of the puller bolts 9 abut against the outer side of an outer side baffle of the disc spring 5, the two ends of the round steel pipe 1 are symmetrically welded and fixed with two anchoring flanges 7 close to the end parts, the middle of each anchoring flange 7 is also in threaded connection with the puller bolts 9, the inner side ends of the puller bolts 9 also abut against the outer side ends of the baffle 6, the puller bolts 9 are screwed or unscrewed during use to complete prestress adjustment of the supporting mechanism, and requirements of supporting forces of different floors are met conveniently.
The number of the cover plates 3 is two, the number of the channel steels 4 is four, the channel steels 4 are divided into two groups, and the two groups are symmetrically and fixedly connected between the two cover plates 3 through connecting bolts to form an outer pipe;
friction angle steel 10 is provided with four and its cross-section is the equal structure of L type both sides length, friction angle steel 10's a side is inside even set up two be used for with the rectangle steel pipe 2 between the fixed connection's of inner tube connection screw 101, friction angle steel 10's the inside three activity slotted hole 102 that is used for with the apron 3 swing joint of outer tube of seting up of opposite side, through friction angle steel 10 swing joint between inner tube and the outer tube, when the both ends atress of outer tube and inner tube, relative slip takes place between apron 3 of outer tube and the friction angle steel 10, the kinetic energy that the frictional energy that relative slip produced the effect of power produced consumes, the damage of outside power to supporting mechanism self has been avoided.
One end of the circular steel pipe 1 extends to the outer end of the inner pipe and is fixedly welded with an end plate 11 at the end part of the extending end, in order to increase the connection rigidity, four rib plates 12 are uniformly and fixedly welded at the joint of the circular steel pipe 1 and the end plate 11, meanwhile, four connecting angle steels 13 are symmetrically and fixedly welded at the outer ends of the outer pipe and the outer sides of the two cover plates 3, the end plates 11 are also fixedly welded at the outer ends of the connecting angle steels 13, and the supporting mechanism is connected and used through the two end plates 11.
In order to avoid the direct contact between one end of the circular steel pipe 1 of the inner pipe and the end plate 11 and influence on the anti-seismic performance, the length of the connecting angle steel 13 is not less than the length of the circular steel pipe 1 which is longer than the outer side of the cover plate 3.
In order to facilitate the movable connection between the cover plate 3 and the friction angle steel 10, the movable slotted hole 102 of the friction angle steel 10 is oval in shape.
Example 2, as shown in fig. 11, two support mechanisms of the present invention are combined into a herringbone, and are installed at an interlayer position of a certain span of a frame structure through bolts, the support mechanisms are pushed to deform and consume energy by utilizing displacement dislocation between an upper layer and a lower layer, the upper ends of the support mechanisms are connected to a gusset plate at the middle bottom of the span of a frame beam on the upper layer, the lower ends of the support mechanisms are connected to a gusset plate beside a column foot on the lower layer of a frame column, the prestress adjustment of the support mechanisms is completed by screwing or unscrewing a puller bolt 9, so as to meet the requirements of support forces of different floors, when the support members receive acting forces generated by the displacement dislocation between the upper layer and the lower layer, relative sliding occurs between a cover plate 3 of an outer tube and a friction angle steel 10, kinetic energy generated by the relative sliding is consumed by the action of friction energy, the damage of external force to the support mechanisms is avoided, when the support, the whole body can be replaced by bolts at both ends, and partial parts can be replaced by opening the support member by opening the connecting bolts of the friction angle steel 10, wherein the specific structure of the support mechanism is the same as that of embodiment 1.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a self-reset friction power consumption brace member of variable prestressing force of assembled which characterized in that: the friction steel tube is characterized by comprising a round steel tube (1), a rectangular steel tube (2), a cover plate (3), channel steel (4), a disc spring (5) and friction angle steel (10), wherein notches are formed in the middles of long sides of sections of two ends of the rectangular steel tube (2), the round steel tube (1) is sleeved on the inner side of the rectangular steel tube (2), and the notch of the rectangular steel tube (2) is welded and fixed with the rectangular steel tube (2) to form an inner tube;
the two disc springs (5) are arranged and are respectively sleeved at two ends of the round steel pipe (1);
the number of the cover plates (3) is two, the number of the channel steels (4) is four, the channel steels (4) are divided into two groups, and the two groups are symmetrically fixed between the two cover plates (3) through connecting bolts to form outer pipes;
friction angle steel (10) are provided with four and the cross-section is the structure that L type both sides length equals, one side of friction angle steel (10) is inside even offer two be used for with the inner tube rectangle steel pipe (2) between fixed connection's connection screw (101), the opposite side of friction angle steel (10) is inside even offer three be used for with the apron (3) swing joint's of outer tube activity slotted hole (102), through friction angle steel (10) swing joint between inner tube and the outer tube.
2. The fabricated self-resetting friction energy dissipation supporting member with variable prestress according to claim 1, wherein baffles (6) are respectively sleeved on the outer sides of the circular steel tubes (1) at two ends of the disc springs (5), and the baffles (6) are in sliding connection with the circular steel tubes (1).
3. The assembled self-resetting friction energy-consuming support member with variable prestress according to claim 2, wherein end caps (8) are vertically welded and fixed to the end portions of the two ends of the cover plate (3), tightening bolts (9) are screwed to the two ends of the end caps (8), and the inner sections of the tightening bolts (9) abut against the outer sides of the baffles (6) on the outer sides of the disc springs (5).
4. The assembled self-resetting friction energy-consuming support member with variable prestress according to claim 3, wherein two anchoring flanges (7) are symmetrically welded and fixed at positions close to the ends of the round steel pipe (1), a jacking bolt (9) is also in threaded connection with the middle of each anchoring flange (7), and the inner end of each jacking bolt (9) abuts against the outer end of the baffle (6).
5. The fabricated variable prestress self-resetting friction energy dissipation brace member as claimed in claim 4, wherein one end of the circular steel pipe (1) extends to the outer side end of the inner pipe, and an end plate (11) is welded and fixed at the end of the extending end.
6. The fabricated self-resetting friction energy dissipation supporting member with variable prestress according to claim 5, wherein four rib plates (12) are uniformly welded and fixed at the joint of the circular steel pipe (1) and the end plate (11).
7. The fabricated self-resetting friction energy dissipation supporting member with variable prestress according to claim 5, wherein four connecting angle steels (13) are symmetrically welded and fixed at the outer sides of the two cover plates (3) at the outer side ends of the outer tubes, and end plates (11) are also welded and fixed at the outer side ends of the connecting angle steels (13).
8. The fabricated variable prestress self-resetting friction energy dissipation brace member as claimed in claim 7, wherein the length of the connecting angle steel (13) is not less than the length of the circular steel pipe (1) extending out of the cover plate (3).
9. An assembled variable prestress self-resetting friction energy-consuming support member according to claim 1, characterized in that the shape of the movable slotted hole (102) of the friction angle steel (10) is oval in particular.
CN201920597095.8U 2019-04-28 2019-04-28 Assembled self-resetting friction energy dissipation supporting member with variable prestress Active CN210105018U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111535469A (en) * 2020-07-07 2020-08-14 湖南大学 Self-resetting support with energy consumption time sequence characteristics and assembling method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111535469A (en) * 2020-07-07 2020-08-14 湖南大学 Self-resetting support with energy consumption time sequence characteristics and assembling method thereof

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