CN211143934U - Friction damper for frame structure node and building frame structure - Google Patents

Abstract

The utility model discloses a friction damper and building frame structure for frame construction node, wherein the attenuator includes first energy consumption board, second energy consumption board and prestressing force subassembly. The aperture of the first end of the first elongated hole on the first energy consumption plate is smaller than the apertures of the other positions; the building frame structure includes the above-described friction damper. When the earthquake happens, because the first end in first rectangular hole is close to the node, its aperture is less than the aperture of first rectangular hole other positions department, then when second energy consumption board and frame crossbeam move in first rectangular hole for the frame post simultaneously, the prestressing force subassembly can the butt on the internal face of first end, second energy consumption board and frame crossbeam use the prestressing force subassembly of first end department to rotate for first energy consumption board and frame post as the axis of rotation simultaneously, need not to set up current adapter sleeve and pivot alone, simplify the structure of whole friction damper, shared space, the assembly and the dismantlement of the friction damper of also being convenient for.

Description

Friction damper for frame structure node and building frame structure

Technical Field

The utility model belongs to the technical field of building frame construction absorbing, concretely relates to a friction damper and building frame construction for frame construction node.

Background

The steel structure has the advantages of high strength, ductility, light weight and the like, and is widely applied to earthquake-resistant structures, however, brittle failure occurs at the joints of the connecting positions of the beams and the frame columns of a large number of steel structures in the earthquake for decades, the stress concentration phenomenon occurs at the joints of more steel structure houses, the collapse phenomenon of the steel structures is easily caused in the earthquake, and even if the steel structures do not collapse, the subsequent maintenance cost of the steel structures is high.

With the continuous development of the earthquake-proof technology, the steel structure is gradually changed from an anti-collapse design to a recoverable function so as to reduce the loss after an earthquake, and the steel frame structure is mainly characterized in that a special damper is arranged at the node of a steel frame or in the steel frame.

For example, chinese patent CN106812365A discloses a friction damper, which includes a first connecting sleeve, a first energy dissipation plate, a second connecting sleeve, a second energy dissipation plate and a pre-stress assembly, wherein the first connecting sleeve is fixed on a frame beam, and the second connecting sleeve is fixed on a frame column; one end of the first energy consumption plate is hinged on the first connecting sleeve through a shaft, and one end of the second energy consumption plate is hinged on the second connecting sleeve through a shaft; meanwhile, the second energy consumption plate is provided with a long waist hole extending along the length direction of the second energy consumption plate, and the first energy consumption plate is provided with a plurality of spaced connecting holes which can be communicated with the long waist hole; the prestress assembly penetrates through the long waist hole and the connecting hole, and applies pretightening force to the first energy consumption plate and the second energy consumption plate, so that the first energy consumption plate and the second energy consumption plate are always in frictional butt joint and are fixedly connected in a stacked mode.

According to the friction damper with the structure, when an earthquake occurs outside, the steel frame deforms under the action of the earthquake, so that gaps occur at the nodes and relative motion occurs between the frame columns and the cross beams, the first energy consumption plate and the prestress assembly integrally move horizontally relative to the second energy consumption plate due to the arrangement of the long waist holes, and the two energy consumption plates are always kept in friction abutting under the action of the prestress assembly; meanwhile, any one of the first energy consumption plate and the second energy consumption plate rotates relative to the corresponding frame column or the corresponding cross beam, so that the cross beam can rotate relative to the frame column to consume energy consumption generated by an earthquake on the node; after an earthquake, the first energy consumption plate and the second energy consumption plate are always in friction butt joint, and the cross beam can rotate relative to the frame column, so that stable restoring force and energy consumption capacity are provided for the node, and the steel frame can automatically restore to the state before the earthquake.

However, when the above-mentioned friction damper is implemented to rotate the beam relative to the frame column, the first connecting sleeve or the second connecting sleeve and the rotating shaft need to be separately arranged, so that the energy consumption plate can rotate, the structure of the whole friction damper is complicated and not compact, the occupied space at the node of the frame structure is large, and the assembly of the frame structure is not convenient.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model discloses the technical problem that will solve lies in the structure complicacy and the not compactness of current friction damper, the shared space in frame construction node is big and the frame construction's of not being convenient for dismantlement and assembly.

To this end, the utility model provides a friction damper for frame construction node, include

The first energy consumption plate is provided with a first elongated hole extending along the length direction of the first energy consumption plate, and the aperture of the first end of the first elongated hole is smaller than the apertures of other positions;

the at least one second energy consumption plate is provided with at least one first connecting hole communicated with the first elongated hole; one end of the first energy consumption plate is suitable for being fixed on a frame column, and the other end of the first energy consumption plate is arranged on the second energy consumption plate in a stacked mode;

at least one prestress assembly corresponding to the first connection holes one to one; wear to establish on first connecting hole, first rectangular shape hole and the frame crossbeam with on the second connecting hole of first connecting hole one-to-one for with first energy consumption board and second energy consumption board are fixed on the frame crossbeam along range upon range of direction, and give the pretightning force of mutual friction butt is exerted to first energy consumption board and second energy consumption board.

Optionally, in the above friction damper for a frame structure node, the other end of the first elongated hole serves as a second end; the aperture of the first elongated hole gradually increases from the first end to the second end.

Optionally, in the above friction damper for a frame structure node, at least the first fastener of the pre-stressing assembly is inserted into the first elongated hole, and the outer diameter of the first fastener matches the aperture of the first end.

Optionally, the above friction damper for a frame structure node, the pre-stressing assembly further comprises a locking member locked to an end of the first fastener; and the elastic piece is sleeved on the first fastening piece, two ends of the elastic piece are respectively abutted against the locking part and the energy consumption plate close to the locking part, and the elastic piece applies pre-tightening force back to the locking part to the energy consumption plate.

Optionally, in the above friction damper for a frame structure node, at least one first friction portion and at least one second friction portion are respectively disposed on mutually facing surfaces of the first energy consumption plate and the second energy consumption plate, and the first friction portion and the second friction portion are in one-to-one correspondence and are in tight slidable abutment.

Optionally, in the above friction damper for a frame structure node, one of the first friction portion and the second friction portion is a convex tooth protruding outward, the other is a concave groove matched with the convex tooth, and at least one side wall of the convex tooth and the concave groove in sliding abutment is a first slope surface and a second slope surface respectively.

Optionally, in the above friction damper for a frame structure node, there are at least two first friction portions, and correspondingly there are at least two second friction portions, all the first friction portions are sequentially and adjacently arranged, and all the second friction portions are sequentially and adjacently arranged.

Optionally, in the above friction damper for a frame structure node, the longitudinal cross-sectional shapes of the convex teeth and the concave grooves are both triangular or trapezoidal, and the oblique side of the triangle or the oblique waist of the trapezoid is used as the first slope surface or the second slope surface.

The utility model also provides a building frame structure, include

At least two frame posts, vertical setting and horizontal interval arrange:

at least one frame cross beam horizontally arranged between two adjacent frame columns;

at least two friction dampers for a frame structure node as described in any of the above, both ends of the frame beam are connected with the adjacent frame columns through at least one of the friction dampers, respectively.

Optionally, the building frame structure further includes at least one energy-consuming damper disposed at a node of the frame column and the frame column;

any energy dissipation damper comprises a fixing piece, wherein the fixing piece is provided with a horizontal part and a vertical part connected with the horizontal part, the vertical part is fixed on the frame column, and the horizontal part is provided with a second elongated hole extending from a position close to the node to a position far away from the node; correspondingly, at least one third connecting hole communicated with the second elongated hole is formed in the frame beam; and

the fastening components are in one-to-one correspondence with the third connecting holes and penetrate through the third connecting holes and the second strip-shaped holes;

the aperture of the second elongated hole gradually increases from the direction close to the frame structure node to the direction far away from the frame structure node.

The technical scheme of the utility model, have following advantage:

1. the utility model provides a friction damper for frame construction node, including first energy consumption board, second energy consumption board and prestressing force subassembly. The first energy consumption plate is provided with a first elongated hole extending along the length direction of the first energy consumption plate, and the aperture of the first end of the first elongated hole is smaller than the apertures of other positions; the second energy consumption plate is provided with at least one first connecting hole communicated with the first strip-shaped hole; one end of the first energy consumption plate is suitable for being fixed on the frame column, and the other end of the first energy consumption plate is arranged on the second energy consumption plate in a stacking mode; the prestress assemblies correspond to the first connecting holes one by one; wear to establish on first connecting hole, first rectangular shape hole and the frame crossbeam with on the second connecting hole of first connecting hole one-to-one for with first energy consumption board and second energy consumption board are fixed on the frame crossbeam along range upon range of direction, and give the pretightning force of mutual friction butt is exerted to first energy consumption board and second energy consumption board.

When the friction damper with the structure is used for fixing the joint of the frame cross beam and the frame column, one end part of the first energy consumption plate close to the first end is fixed on the frame column, so that the first energy consumption plate and the frame cross beam are in a relatively fixed state; the prestress assembly penetrates through the first connecting hole, the first strip-shaped hole and the second connecting hole, and the first strip-shaped hole is formed in the first energy consumption plate, so that the second energy consumption plate is fixed on the frame cross beam by the prestress assembly, and the second energy consumption plate and the frame cross beam can slide in the first strip-shaped hole along the length direction of the first strip-shaped hole, so that the second energy consumption plate and the frame cross beam are in a relatively fixed state; when an earthquake occurs and a gap is generated between the frame cross beam and the frame column at a node, the second energy consumption plate and the frame cross beam simultaneously move in the first elongated hole relative to the frame column; simultaneously, because the first end in first rectangular shape hole is close to the node, and the aperture of first end is less than the aperture of first rectangular shape hole other positions department, then when second energy consumption board and frame crossbeam move in first rectangular shape hole for the frame post simultaneously, the prestressing force subassembly can the butt on the internal face of first end, thereby second energy consumption board and frame crossbeam use the prestressing force subassembly of first end department to rotate for first energy consumption board and frame post as the axis of rotation simultaneously, need not to set up current adapter sleeve and pivot alone on the friction damper, simplify whole friction damper's structure, shared space is littleer at frame structure node, also be convenient for friction damper's assembly and dismantlement.

2. The utility model provides a friction damper for frame structure node, the other end of the first strip-shaped hole is used as the second end; the aperture of the first elongated hole is gradually increased from the first end to the second end, so that the first elongated hole is conveniently machined in the first energy consumption plate, and when the prestress assembly penetrates through the first elongated hole and the second energy consumption plate and the frame cross beam move, the gradually increased aperture plays a role in guiding the sliding of the prestress assembly in the first elongated hole; simultaneously, make the prestressing force subassembly that is close to the node more easy butt on the internal face of the first end in first rectangular hole, form the axis of rotation of second energy consumption board and frame crossbeam.

3. The utility model provides a friction damper for frame construction node, first energy consumption board and second energy consumption board are equipped with at least one first friction portion and at least one second friction portion on the surface respectively facing each other, first friction portion with butt cooperation between second friction portion one-to-one and slidable, under the cooperation of two friction portions, the frictional force of increase friction damper improves and plays the scattered energy effect in the antidetonation.

Furthermore, one of the first friction part and the second friction part is a convex tooth protruding outwards, the other one is a groove matched with the convex tooth, the side wall matched with the convex tooth and the groove is respectively provided with a first slope surface and a second slope surface, a frictional centering force is formed by the sliding and abutting of the first slope surface and the second slope surface, the centering force can generate a vertical component force in the vertical direction, the first energy consumption plate and the second energy consumption plate move relatively in the earthquake, correspondingly, the first slope surface and the second slope surface slide away from each other in the vertical direction, and the vertical component force further increases the pre-tightening force of the pre-stressing assembly between the first energy consumption plate and the second energy consumption plate, so that the energy consumption of the first energy consumption plate and the second energy consumption plate in the earthquake can be changed; on the contrary, after an earthquake, the first slope surface and the second slope surface vertically slide close to each other, the vertical component force is reduced to release the increased pretightening force, and at the moment, under the action of the original pretightening force of the prestress assembly, the first energy consumption plate and the second energy consumption plate can be reset to the initial state.

4. The utility model provides a be used for building frame system, including two at least frame posts, at least one frame crossbeam and two at least foretell friction damper who is used for the frame construction node, two at least vertical settings of frame post and horizontal interval arrangement: at least one frame cross beam is horizontally arranged between two adjacent frame columns; and two ends of the frame cross beam are respectively connected with the adjacent frame columns through at least one friction damper.

The building frame system with the structure can play a role in resisting earthquake in an earthquake because the joints of the frame cross beams and the frame columns are connected by adopting any one of the friction dampers; and can resume to the initial state after the earthquake, can realize the variable and function recoverable function of energy consumption promptly, can also make the compact structure of whole building frame system, the occupied space is little, also is convenient for assemble.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic top view of a building frame structure provided in example 2;

FIG. 2 is an enlarged fragmentary view of the building frame structure of FIG. 1;

FIG. 3 is a schematic longitudinal cross-sectional view A-A of the building frame structure of FIG. 2;

FIG. 4a is a schematic view of a side surface of a first energy panel of the friction damper of the building frame structure of FIG. 3 facing a frame rail;

FIG. 4b is a schematic structural diagram of the other side surface of the first energy consumption plate in FIG. 4 a;

FIG. 5a is a schematic view of the second panel of the friction damper of the building frame structure of FIG. 3 on a side facing away from the frame beam;

FIG. 5b is a schematic view of the structure shown on the other side of the second energy consumption plate in FIG. 5 a;

FIG. 6 is a schematic view of the structure of the fastening member in the dissipative damper of the building frame structure of FIG. 3;

FIG. 7 is a schematic view in elevation of a frame post of the building frame structure of FIG. 3;

FIG. 8 is a schematic top view of a frame rail of the building frame structure of FIG. 3;

FIG. 9 is a schematic view of the first energy panel and the second energy panel of the building frame structure of FIG. 3 in a relative movement state;

FIG. 10 is a schematic view of the second energy consumption plate and the frame rails and friction plates in the building frame structure of FIG. 3 in a state of being deformed integrally with respect to the frame columns;

FIG. 11 is a schematic view of the friction plate of the dissipative damper in the frame structure of the building of FIG. 3;

description of reference numerals:

11-frame posts; 111-eighth connection hole; 112-sixth connection hole; 12-a frame beam; 121-a second connection hole; 122-third connection hole; 21-a first energy consumption plate; 211-a first elongated aperture; 212 — a first friction portion; 22-a second energy consumption board; 221-a first connection hole; 231-a first fastener; 232-an elastic member; 233-a locking member; 224-a second friction portion;

31-a fixing member; 311-a second elongated aperture; 312-seventh connection hole; 32-a friction plate; 321-fourth connecting hole.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a friction damper for a frame structure node, as shown in fig. 1 to 11, comprising at least one first dissipative plate 21, at least one second dissipative plate 22, at least one prestressing element 23.

For example, as shown in fig. 3, the first energy consumption plate 21 and the second energy consumption plate 22 are two energy consumption plates, and the number of the prestressing assembly 23 is several. For the first energy consumption plate 21, as shown in fig. 4a, a first elongated hole 211 extending along the length direction of the first energy consumption plate 21 is provided on the first energy consumption plate 21, one end of the first elongated hole 211 close to the frame structure node is used as a first end (right end in fig. 4 a), the other end far away from the node is used as a second end (left end in fig. 4 a), and the aperture of the first elongated hole 211 gradually increases from the first end toward the second end. As shown in fig. 3, during use, the first energy consumption plate 21 is adapted to be fixed to the frame post 11 at one end thereof near the first end and arranged on the second energy consumption plate 22 at the other end thereof near the second end.

For example, as shown in fig. 3, one end of the first energy consumption plate 21 is provided with a vertical first bending portion (right end in fig. 3), the first bending portion is provided with at least one fifth connecting hole (not shown in the figure), the frame column 11 is correspondingly provided with sixth connecting holes (not shown in the figure) which are in one-to-one correspondence and are communicated with the fifth connecting holes, and the first bending portion is fixed on the frame column 11 by a fastening member, such as a bolt or a screw, which is inserted into the fifth connecting hole and the sixth connecting hole, that is, the first energy consumption plate 21 is L-shaped, the horizontal portion of the L-shaped is provided with a first elongated hole 211, and the vertical portion of the L-shaped is fixed on the frame column 11 as the first bending portion, so that the first energy consumption plate 21 and the frame column 11 are always in a relatively fixed state.

As shown in fig. 5a and 5b, the second energy consumption plate 22 is provided with at least one first connection hole 221 connected to the first elongated hole 211. For example, the number of the first connection holes 221 is seven, or other numbers, such as one, two, three, four, five, six, or eight, nine, etc., and the specific number may be selected according to actual requirements.

As shown in fig. 8, corresponding to the first connection holes 221, second connection holes 121 corresponding to the first connection holes 221 one-to-one and vertically communicating with each other are formed in the frame cross member 12. The plurality of prestress assemblies 23 correspond to the first connecting holes 221 and the second connecting holes 121 one by one, the prestress assemblies 23 penetrate through the first connecting holes 221, the first strip-shaped holes 211 and the second connecting holes 121, the first energy consumption plates 21 are fixed on the frame cross beams 12 along the vertical direction, pretightening force for mutual friction and butt joint is applied to the first energy consumption plates 21 and the second energy consumption plates 22, and the second energy consumption plates are slidably arranged on the first energy consumption plates along the length direction of the first strip-shaped holes.

The prestressing assembly 23 fixes the second energy consumption plate 22 on the frame beam 12 along the vertical direction, so that the second energy consumption plate 22 and the frame beam 12 are always in a relatively fixed state and do not move relatively along the length direction of the first elongated hole. Due to the arrangement of the first elongated hole 211, the plurality of prestress assemblies 23, the second energy consumption plate 22 and the frame beam 12 are integrally slid in the length direction of the first elongated hole 211 relative to the first energy consumption plate 21 and the frame column 11; simultaneously, a plurality of prestressing force subassembly 23 wears to establish in first rectangular hole 211, because the aperture of first rectangular hole 211 is crescent by first end towards the second end, when second energy consumption board 22, prestressing force subassembly 23 and frame crossbeam 12 are whole when sliding for first energy consumption board 21, then prestressing force subassembly 23 that is close to first end can the butt on the inner wall of first end, form second energy consumption board 22 and frame crossbeam 12 and rotate for the axis of rotation of first energy consumption board 21 and frame post 11, need not like setting up adapter sleeve and connecting axle alone among the prior art, realize the rotation of frame crossbeam 12 relative frame post 11, thereby simplify the structure of friction damper.

As for the pre-stressing assemblies 23, as shown in fig. 3, each pre-stressing assembly 23 includes a first fastener 231, a locking part 233, and at least one elastic member 232. Wherein the locking part 233 is locked to the end of the first fastener 231; the elastic member 232 is sleeved on the first fastening member 231, and two ends of the elastic member 232 respectively abut against the locking member 233 and the energy consumption plate close to the locking member 233, and the elastic member 232 applies a pre-tightening force to the energy consumption plate, which is opposite to the locking member 233.

For example, two first energy consumption plates 21 are respectively disposed on the top surface and the bottom surface of the frame beam 12, and two second energy consumption plates 22 are respectively disposed on the top of the first energy consumption plate 21 located above and the bottom of the first energy consumption plate located below. That is, the first energy consumption plate 21 is sandwiched between the second energy consumption plate 22 and the frame beam 12. Preferably, the frame beam 12 includes a top plate, a bottom plate, and a web sandwiched therebetween, the web extending beyond the top and bottom plates, and the first energy consumption plate 21 is sandwiched between the second energy consumption plate 22 and the web.

For the first fastening member 231, it is preferable that the first fastening member 231 is a stud bolt, the locking member 233 is a nut, the elastic member 232 is a disc spring, and both the nut and the disc spring are preferably provided.

As shown in fig. 3, the bolt is inserted into the first connection hole 221, the first elongated hole 211, and the second connection hole 121, and the top and the bottom of the bolt respectively extend out of the corresponding second energy consumption plate 22, and the two nuts are locked on the top and the bottom of the bolt respectively; the two disc springs are sleeved on the bolt, and two ends of the disc spring above the bolt are respectively abutted between the nut above the bolt and the second energy consumption plate 22; two ends of the disc spring positioned below are respectively abutted between the nut positioned below and the second energy consumption plate 22, the disc spring positioned above exerts downward pretightening force on the second energy consumption plate 22 positioned above, and the disc spring positioned below exerts upward pretightening force on the second energy consumption plate 22 positioned below, so that the mutually facing surfaces of the second energy consumption plate 22 positioned above and the first energy consumption plate 21 are always in frictional abutment; the facing surfaces of the lower second energy consumption plate 22 and the first energy consumption plate 21 are always in friction contact with each other, and friction force is generated to play a role in energy consumption.

Optimally, the outer diameter of the bolt matches, i.e. is equal or almost equal to, the bore diameter at the first end, and when the second energy consumption plate 22 and the frame beam 12 are moved relative to the first energy consumption plate 21 and the frame column 11, the outer wall of the bolt may abut completely against the inner wall of the first end, forming a stable pivot point for the second energy consumption plate 22. Of course, the outer diameter of the bolt of the prestressed component 23 adjacent to the first end may be matched with the aperture of the first end, and the outer diameter of the bolt of the other prestressed components 23 may be larger than the aperture of the first end, and only needs to be able to penetrate through the first elongated hole 211 to fix the first energy consumption plate 21, the second energy consumption plate 22 and the frame beam 12.

Preferably, the outer diameter of the bolt is equal or almost equal to the diameters of the first connection hole 221 and the second connection hole 121, so that after the pre-stressing assembly 23 is installed in place, the second energy consumption plate 22 and the frame beam 12 are always kept in a fixed state, have no relative motion in the vertical direction, and only integrally move and rotate in the horizontal direction, so as to overcome the deformation of the node in the earthquake. In addition, the bolts are all high-strength bolts in the building industry.

Preferably, as shown in fig. 4b and 5b, at least two first friction parts 212 and at least two second friction parts 224 are respectively provided on the surfaces of the first energy consumption plate 21 and the second energy consumption plate 22 facing each other, all the first friction parts 212 are sequentially adjacently arranged, and all the second friction parts 224 are sequentially adjacently arranged. For example, the first friction portion 212 is a convex tooth, the second friction portion 224 is a groove suitable for being embedded by the convex tooth, the convex tooth and the groove are in one-to-one correspondence to form a concave-convex fit, the side wall of the convex tooth and the side wall of the groove are respectively provided with a first slope surface and a second slope surface, for example, the longitudinal cross-sectional shapes of the convex tooth and the groove are both triangular, two bevel edges of the triangle corresponding to the convex tooth are respectively used as the first slope surface, two bevel edges of the triangle corresponding to the groove are respectively used as the second slope surface, the first slope surface and the second slope surface are in one-to-one correspondence and slidably abutted, so that the surfaces facing each other of the first energy consumption plate 21 and the second energy consumption plate 22 form an abutted corrugated surface, so as to increase the friction force between the first energy consumption plate 21 and the second energy consumption plate 22, and further improve.

That is, a frictional centering force is formed between the first sloping surface of the lobe and the second sloping surface of the groove. The centering force can generate a vertical component force in the vertical direction, the first energy consumption plate and the second energy consumption plate move relatively in the earthquake, the first slope surface and the second slope surface correspondingly slide away from each other in the vertical direction, and the vertical component force further increases the pretightening force of the belleville spring, so that the energy consumption of the first energy consumption plate and the second energy consumption plate in the earthquake is variable; after an earthquake, the first slope surface and the second slope surface vertically slide close to each other, the vertical component force is reduced, the increased compression amount of the belleville spring is released, and at the moment, the first energy consumption plate and the second energy consumption plate are reset to the initial state under the action of the initial pretightening force of the belleville spring. As for the slope formed between the first slope surface of the convex teeth and the horizontal plane, the slope may be 20 degrees, 15 degrees, 30 degrees, 45 degrees, and the like, and is not particularly limited, and may be determined according to actual requirements, and only the reset of the first energy consumption plate and the second energy consumption plate is realized under the action of the pretightening force of the disc spring.

In the using process, the friction damper is adopted to fix the joint of the frame beam 12 and the frame column 11, when an earthquake occurs, as shown in fig. 10, with the opening of the gap between the frame beam 12 and the frame column 11, due to the arrangement of the first elongated hole 211, the first energy consumption plate 21 and the frame column 11 form a first fixed body, the second energy consumption plate 22 and the frame beam 12 form a second fixed body, the first fixed body and the second fixed body move in opposite directions, the bolt in the pre-stress assembly 23 moves in the first elongated hole, relative sliding occurs between the convex tooth on the first energy consumption plate 21 and the corresponding groove on the second energy consumption plate 22, for example, as shown in fig. 9, the convex tooth slides from the left side to the right side in fig. 9, the groove slides from the right side to the left side in fig. 9, the second energy consumption plate 22 presses the belleville spring towards the nut direction, and the belleville spring is further compressed and deformed, increasing the pretightening force of the disc spring between the first energy consumption plate 21 and the second energy consumption plate 22 (that is, the pretightening force of the disc spring is increased by the vertical component force of the centering force between the first slope surface and the second slope surface), increasing the friction force of the first energy consumption plate 21 and the second energy consumption plate 22, ensuring that the convex teeth cannot be separated from the corresponding grooves in the moving process, and improving the energy consumption capability of the damper; meanwhile, in an earthquake, due to the movement of the first energy consumption plate 21 and the second energy consumption plate 22, the bolt in the rightmost prestress assembly 23 just abuts against the inner hole wall of the first end, and the second fixed body rotates relative to the first fixed body by taking the bolt as a rotating shaft.

After an earthquake occurs, the joints of the frame beam 12 and the frame column 11 are not deformed by the earthquake, the gap between the joints of the frame beam 12 and the frame column 11 is gradually reduced, the first energy consumption plate 21 and the second energy consumption plate 22 move relatively close to each other, as shown in fig. 9, the convex teeth move from the right side to the left side of fig. 9, the grooves move from the left side to the right side, the first slope surface and the second slope surface slide close to each other, the belleville springs release further compressed compression amount, and the convex teeth and the grooves are driven to reset under initial pretightening force, so that the first energy consumption plate 21, the second energy consumption plate 22, the frame beam 12 and the frame column 11 are reset to initial positions, and the function recovery of the frame structure is realized.

The friction damper of this embodiment, because with the aperture of first rectangular hole 211 by first end towards second end direction crescent, in the earthquake process, the bolt of butt in the pore wall of first end forms the axis of rotation of second energy consumption board 22 and frame crossbeam 12 to need not to set up pivot and adapter sleeve alone like prior art, simplify whole friction damper's structure, also be convenient for the assembly and the dismantlement of friction damper at the node.

As a first alternative of the above embodiment, the longitudinal cross-sectional shapes of the convex teeth and the concave grooves may also be other structures, such as a trapezoid, where two waists of the corresponding trapezoid respectively serve as a first slope surface or a second slope surface; or a right trapezoid, the oblique waist of which is used as the first slope surface or the second slope surface. Alternatively, as a modification, the first friction part 212 and the second friction part 224 each have a rough surface to be rubbed, and the first friction part 212 and the second friction part 224 are directly in sliding contact with each other. Alternatively, the first friction portion 212 and the second friction portion 224 may not be provided, and only the facing surfaces of the first energy consumption plate 21 and the second energy consumption plate 22 may be kept in frictional contact with each other under the pre-tightening force of the pre-stressing assembly 23.

As a second alternative of the above embodiment, the elastic element 232 in the pre-stress assembly 23 may be a spring or a spring plate with other shapes besides the disc spring, and only needs to apply a pre-tightening force for tight abutment to the mutually facing surfaces of the first energy consumption plate 21 and the second energy consumption plate 22.

As a third alternative of the above embodiment, the first elongated hole 211 may be a long waist hole, or the aperture of the first end of the first elongated hole 211 is smaller than the apertures of other positions, without the aperture of the first elongated hole 211 gradually increasing from the first end to the second end, and at this time, the pre-stressing assembly 23 in the first end can also form the rotation fulcrum of the first energy consumption plate 21 and the frame beam.

Example 2

The present embodiment provides a building frame structure, as shown in fig. 1 and 2, including at least two frame columns 11, at least one frame cross beam 12, and at least two friction dampers provided in any one of embodiments 1.

Wherein, a plurality of frame columns 11 are vertically arranged and horizontally arranged at intervals; each frame cross member 12 is horizontally arranged between two adjacent frame columns 11; the frame cross-member 12 is connected at both ends to the adjacent frame columns 11 by at least one friction damper, respectively. For example, two friction dampers are used in fig. 1 to connect one end of a frame beam 12 to its adjacent frame column 11.

In the building frame structure of this embodiment, the friction damper in embodiment 1 is used to fixedly connect the joints of the frame beam 12 and the frame column 11, so that the building frame structure has the performance of energy dissipation and function recovery in an earthquake, and meanwhile, the building frame structure is compact in structure, small in occupied space and convenient to mount and dismount.

As shown in fig. 1, the building frame structure further includes at least one energy-consuming damper provided at a node of the frame column 11 and the frame column 11; the dissipative dampers are located at the nodes away from the above-mentioned friction dampers, e.g. one dissipative damper is arranged between two friction dampers.

As shown in fig. 2, 6 and 10, the dissipative damper includes a fixing member 31 and a fastening assembly. The fixing member 31 has a horizontal portion and a vertical portion connected to the horizontal portion, the vertical portion is fixed to the frame column 11, the horizontal portion is provided with a second elongated hole 311 extending from a position close to the joint to a position away from the joint, for example, the fixing member 31 is an angle steel; seventh connecting holes 312 are formed in the vertical portions of the angle steels, as shown in fig. 7, eighth connecting holes 111 corresponding to the seventh connecting holes 312 in a one-to-one manner are formed in the frame columns 11, and fasteners are inserted into the seventh connecting holes 312 and the eighth connecting holes 111 to fix the vertical portions to the frame columns 11.

Correspondingly, as shown in fig. 8, at least one third connection hole 122 communicating with the second elongated hole is formed on the frame beam 12; the fastening components correspond to the third connecting holes 122 one to one and penetrate through the third connecting holes 122 and the second strip-shaped holes; for example, the fastening assembly includes a bolt and a nut, the bolt is inserted into the third connecting hole 122 and the second elongated hole 311, and the nut locks and fixes the end of the bolt to connect the fixing member 31 with the frame beam 12; the aperture of second rectangular hole 311 is gradually increased by being close to the frame structure node orientation and keeping away from the frame structure node orientation, the effect that first rectangular hole 211 in this second rectangular hole 311 and the friction damper played is the same, supply frame crossbeam 12 and fastening component to wholly remove for mounting 31 on the one hand, the bolt in the on the other hand fastening component can the butt be close to the aperture inner wall of the one end of node at second rectangular hole 311, form frame crossbeam 12 relative frame post 11 pivoted pivot, further strengthen frame structure's energy consumption effect.

Preferably, as shown in fig. 11, the dissipative damper further includes a friction plate 32, the friction plate 32 is clamped between the frame beam 12 and the horizontal portion of the fixing member 31, and preferably, the friction plate 32 is clamped between the form of the frame beam and the horizontal portion of the fixing member, the friction plate 32 is provided with fourth connecting holes 321 corresponding to the third connecting holes 122 one to one, and bolts of the fastening assembly are inserted into the third connecting holes 122, the second elongated holes and the fourth connecting holes 321, so as to fix the friction plate 32 on the frame beam 12, and the friction plate 32 is disposed to further increase the friction force between the frame beam 12 and the horizontal portion of the fixing member 31, thereby improving the dissipative action. Of course, the above-described friction plate may not be provided.

In addition, the frame beams and the frame columns are preferably made of steel or other materials used in the building industry.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. A friction damper for a frame structure node, comprising

The energy consumption plate comprises at least one first energy consumption plate (21) and a second energy consumption plate, wherein the first energy consumption plate is provided with a first elongated hole (211) extending along the length direction of the first energy consumption plate, and the aperture of a first end of the first elongated hole (211) is smaller than the apertures of other positions;

at least one second energy consumption plate (22) provided with at least one first connection hole (221) communicating with the first elongated hole (211); one end of the first energy consumption plate (21) is suitable for being fixed on the frame column (11), and the other end of the first energy consumption plate is arranged on the second energy consumption plate (22) in a stacking mode;

at least one pre-stress assembly corresponding to the first connection hole (221) one by one; the first connecting holes (221), the first strip-shaped holes (211) and the frame cross beam (12) are penetrated through, and the second connecting holes (121) which are in one-to-one correspondence with the first connecting holes (221) are used for fixing the first energy consumption plate (21) and the second energy consumption plate (22) on the frame cross beam (12) along the stacking direction and applying pre-tightening force of mutual friction and butt joint to the first energy consumption plate (21) and the second energy consumption plate (22).

2. A friction damper for a frame structure node according to claim 1, characterized in that the other end of the first elongated hole (211) is the second end; the aperture of the first elongated hole (211) gradually increases from the first end to the second end.

3. A friction damper for a frame structure node according to claim 1, characterized in that at least the first fastener (231) of the pre-stressing assembly is arranged with an outer diameter through the first elongated hole (211) matching the aperture of the first end.

4. A friction damper for a frame structure node according to claim 3, characterized in that the pre-stressing assembly further comprises a locking part (233) locked on the end of the first fastener (231); and the elastic piece (232) is sleeved on the first fastening piece (231), two ends of the elastic piece (232) are respectively abutted to the locking component (233) and the energy consumption plate close to the locking component (233), and the elastic piece (232) applies pre-tightening force back to the locking component (233) to the energy consumption plate.

5. The friction damper for a frame structure node according to any of claims 1-4, characterized in that the mutually facing surfaces of the first energy consumption plate (21) and the second energy consumption plate (22) are provided with at least one first friction portion (212) and at least one second friction portion (224), respectively, the first friction portion (212) and the second friction portion (224) being in one-to-one correspondence and slidably abutting tight abutment.

6. The friction damper for a frame structure node according to claim 5, wherein one of the first friction portion (212) and the second friction portion (224) is an outwardly protruding spur and the other is a groove cooperating with the spur, at least one sidewall against which the spur and the groove slidably abut is a first ramp and a second ramp, respectively.

7. A friction damper for a frame structure node according to claim 6, characterized in that said first friction portions (212) are at least two and correspondingly said second friction portions (224) are at least two, all said first friction portions (212) being arranged one after the other and all said second friction portions (224) being arranged one after the other.

8. The friction damper for a frame structure node of claim 6, wherein the longitudinal cross-sectional shape of the teeth and grooves are both triangular or trapezoidal, and the hypotenuse of the triangle or the oblique waist of the trapezoid is the first ramp or the second ramp.

9. A building frame structure, comprising

At least two frame posts (11), vertical setting and horizontal interval arrangement:

at least one frame cross-beam (12) arranged horizontally between two adjacent frame columns (11);

at least two friction dampers for a frame structure node according to any of the claims 1-8, both ends of the frame beam (12) being connected with the adjacent frame column (11) by at least one of the friction dampers, respectively.

10. The building frame structure according to claim 9, further comprising at least one dissipative damper provided at a node of the frame post (11) and the frame post (11);

any energy consumption damper comprises a fixing piece (31), wherein the fixing piece (31) is provided with a horizontal part and a vertical part connected with the horizontal part, the vertical part is fixed on a frame column (11), and the horizontal part is provided with a second elongated hole (311) extending from a position close to a node to a position far away from the node; correspondingly, at least one third connecting hole (122) communicated with the second strip-shaped hole (311) is formed in the frame cross beam (12); and

the fastening components correspond to the third connecting holes (122) one by one and penetrate through the third connecting holes (122) and the second strip-shaped holes (311);

the aperture of the second elongated hole (311) is gradually increased from the direction close to the frame structure node to the direction far away from the frame structure node.

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