CN114809771A

CN114809771A - Assembled energy dissipation shock attenuation strutting arrangement and frame construction

Info

Publication number: CN114809771A
Application number: CN202210608885.8A
Authority: CN
Inventors: 连鸣; 李伟; 周玉浩; 王颜凯; 戴子琳
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-07-29

Abstract

The invention discloses an assembled energy dissipation and shock absorption supporting device and a frame structure.A support two ends are connected with an upper extension plate, the upper extension plate is parallel to a support end face, and the upper extension plate at one end of the support is vertically connected with a lower extension plate; the other end of the support is provided with an end energy consumption device which is positioned between the upper extension plate and the lower extension plate; the end energy dissipation device comprises a loading plate, a damper, a base plate and two end plates, wherein the loading plate is vertically connected with the central part of the outer end face of the upper extension plate, the bottom of the base plate is vertically connected with the end face of the lower extension plate, two sides of the base plate are respectively vertically connected with one end plate, and the two end plates are positioned on the left side and the right side of the base plate and are parallel to the loading plate; threaded holes are formed in the two end plates and the loading plate, external threads are formed in the two ends and the middle of the damper, the damper penetrates through the two end plates and the loading plate and is in threaded connection with the two end plates and the loading plate, and the damper is made of low-yield-point steel. And the mechanical connection between the damper and the end energy consumption device is realized.

Description

Assembled energy dissipation shock attenuation strutting arrangement and frame construction

Technical Field

The invention belongs to the field of frame support, and relates to an assembled energy dissipation and shock absorption supporting device and a frame structure.

Background

In recent years, with the continuous development of structural seismic design methods, effective control of damaged parts and degree of damage of structures becomes a very important concept in structural seismic design. The energy dissipation element is arranged in the structure, the structure body is firstly yielded in an earthquake, and the earthquake energy is absorbed by means of repeated plastic deformation, so that the structure body is prevented from being damaged greatly, and the design goal of restoring the main structure to the building function by replacing the energy dissipation element after a strong earthquake is achieved. The node of the structure is an ideal part for arranging the energy dissipation and shock absorption element, and for the steel bar damper, the traditional welding is the simplest method, but for the steel bar damper made of steel with low yield point, a heat affected zone generated at the welding position has great influence on the performance of the damper.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides an assembled energy dissipation and shock absorption supporting device and a frame structure, which realize the mechanical connection between a damper and an end energy dissipation device, have good force transmission performance and simple structure, and can be applied to various steel frames by changing the connection form of the supporting end.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

an assembled energy dissipation and shock absorption supporting device comprises a support, an upper extension plate and a lower extension plate;

the two ends of the support are both connected with an upper extension plate, the upper extension plate is parallel to the end face of the support, and the upper extension plate at one end of the support is vertically connected with a lower extension plate; the other end of the support is provided with an end energy consumption device which is positioned between the upper extension plate and the lower extension plate;

the end energy dissipation device comprises a loading plate, a damper, a base plate and two end plates, wherein the loading plate is vertically connected with the central part of the outer end face of the upper extension plate, the bottom of the base plate is vertically connected with the end face of the lower extension plate, two sides of the base plate are respectively vertically connected with one end plate, and the two end plates are positioned on the left side and the right side of the base plate and are parallel to the loading plate; threaded holes are formed in the two end plates and the loading plate, external threads are formed in the two ends and the middle of the damper, the damper penetrates through the two end plates and the loading plate and is in threaded connection with the two end plates and the loading plate, and the damper is made of low-yield-point steel.

Preferably, two pull rods are connected between the two end plates and are respectively positioned on the front side and the rear side of the base plate.

Preferably, the loading plate is provided with stiffening ribs on the sides.

Preferably, the number of the dampers is multiple, and the dampers are arranged along the length direction of the loading plate.

Preferably, a supporting and connecting plate is arranged between the upper extending plate and the supporting end face, and two faces of the supporting and connecting plate are attached to the upper extending plate and the supporting end face.

Preferably, be provided with the base reinforcing plate between bed plate bottom and the lower extension board terminal surface, the base reinforcing plate both sides and bed plate bottom all laminate with the lower extension board terminal surface.

Preferably, the support and its attachment means are made of high strength steel.

Preferably, the damper is a shear type steel bar damper.

A frame structure is provided with a plurality of assembled energy dissipation and shock absorption supporting devices in the frame.

Preferably, the frame adopts the gusset plate to be connected with the lower extension plate among the assembled energy dissipation shock attenuation strutting arrangement, and the gusset plate adopts high-strength bolt connection with lower extension plate.

Compared with the prior art, the invention has the following beneficial effects:

the damper made of the low-yield-point steel is mechanically connected with the end energy dissipation device, and the damper is simple in structure and convenient to assemble. The end part of the end part energy dissipation device can be firmly installed at a structural node by adopting a reasonable extension measure, and the damper is mechanically connected with the end part energy dissipation device by adopting threads, so that the adverse effect of a traditional welding heat affected zone on the mechanical property of the damper is eliminated, and the application of the damper in the field of energy dissipation and shock absorption of buildings is promoted.

Drawings

Figure 1 is a schematic view of the arrangement of the assembled energy-dissipating shock-absorbing support of the present invention in a frame;

figure 2 is a schematic view of the partial installation of the fabricated energy-dissipating shock-absorbing support of the present invention in a frame;

FIG. 3 is a schematic view of the assembled energy dissipating and damping end dissipating device according to the present invention;

FIG. 4 is a diagram showing the positional relationship of the components of the assembled energy dissipating and damping end energy dissipating device of the present invention;

FIG. 5 is a schematic view of the damper and tie rod in connection with the end dissipation device of the present invention;

FIG. 6 is a schematic view of the damper of the present invention;

FIG. 7 is a schematic view of a load plate stiffener arrangement according to the present invention;

FIG. 8 is a schematic view of the installation of the base of the present invention;

figure 9 is a schematic view of the damper assembly of the present invention.

Wherein, 1 is the upper extending plate, 2 is the stiffening rib, 3 is the attenuator, 4 is the draw-bar nut, 5 is the loading plate, 6 is the pull rod, 7 is the end plate, 8 is the bed plate, 9 is the base reinforcing plate, 10 is the supporting connection board, 11 reserves the pull rod hole for the end plate, 12 is the screw hole, 13 reserves the connection hole for the base reinforcing plate, 14 reserves the attenuator hole for the loading plate, 15 external screw threads, 16 is the support, 17 is the high strength bolt, 18 is the lower extending plate, 19 is the gusset plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 2, the assembled energy-dissipating shock-absorbing support device of the present invention mainly includes three major parts: the support end part connecting assembly, the support 16 and the end part energy dissipation device thereof, wherein the support 16 end part energy dissipation device comprises a perforated steel plate base, a base reinforcing plate, two perforated end plates 7 for fixing the damper 3, a perforated loading plate 5, a plurality of threaded dampers 3, a plurality of high-strength bolts 17 and a stiffening rib 2. The support end connecting assembly mainly comprises an upper extension plate 1, a lower extension plate 18, a support connecting plate 10, a node plate 19 welded on the flange of the beam column and a plurality of high-strength bolts 17.

The two ends of the support 16 are connected with an upper extension plate 1, the upper extension plate 1 is parallel to the end surface of the support 16, and each upper extension plate 1 is vertically connected with a lower extension plate 18; the brace 16 is provided with an end energy dissipation device at one end, between the upper 1 and lower 18 extension plates. The end faces of the two ends of the support 16 are welded with the support connecting plates 10 firstly and then are connected with the upper extending plate 1 through bolts, only one end of the support 16 is provided with an end energy dissipation device, and the other end of the support 16 is only used for connection and is directly connected with the node plate 19.

As shown in fig. 3 to 4, the end energy consumption device includes a loading plate 5, a damper 3, a base plate 8 and two end plates 7, the loading plate 5 is vertically connected to a central portion of an outer end surface of the upper extension plate 1, a bottom of the base plate 8 is vertically connected to an end surface of the lower extension plate 18, both sides of the base plate 8 are vertically connected to one end plate 7, respectively, and the two end plates 7 are located on both left and right sides of the base plate 8 and are parallel to the loading plate 5; threaded holes 12 are formed in the two end plates 7 and the loading plate 5, external threads 15 are formed in the two ends and the middle of the damper 3, the damper 3 penetrates through the two end plates 7 and the loading plate 5 and is in threaded connection with the two end plates and the loading plate, and the damper 3 is made of steel with a low yield point. The number of the dampers 3 is two, and the dampers are arranged along the length direction of the loading plate 5.

The support 16 is selected to have a box-shaped section with high rigidity as much as possible to improve the stable bearing capacity of the support 16, the H-shaped section is only an example in the figure, and the material is selected to be high-strength steel to improve the section strength of the support 16.

And a support connecting plate 10 is arranged between the end faces of the upper extension plate 1 and the support 16, and two faces of the support connecting plate 10 are attached to the end faces of the upper extension plate 1 and the support 16. As shown in fig. 8, a base reinforcing plate 9 is provided between the bottom of the base plate 8 and the end surface of the lower extension plate 18, and both sides of the base reinforcing plate 9 are attached to the bottom of the base plate 8 and the end surface of the lower extension plate 18.

The base plate 8, the base reinforcing plate 9, the end plate 7, the loading plate 5, the support connecting plate 10, the node plate 19, the upper extending plate 1 and the lower extending plate 18 are all made of high-strength steel, wherein the threads arranged at the holes of the end plate 8 and the loading plate 6 connected with the damper 3 need to be consistent with the external threads 15 on the damper 3. The holes of the other plates do not need to be provided with threads.

The damper 3 is made of steel with low yield point by adopting a threaded shearing type steel bar damper, and the two ends and the middle part of the damper 3 are connecting sections which are made into a cylinder shape and are provided with external threads 15. The rest part is an energy consumption section which is manufactured into a double-cone shape to fully exert the energy consumption capability.

For the upper extension plate 1, the lower extension plate 18 and the support connecting plate 10, the support connecting plate 10 and the support 16 are welded by adopting a single-edge groove butt weld and then are connected with the upper extension plate 1 through bolts. In order to ensure that the base plate has enough bending rigidity, the base reinforcing plate 9 is firstly bolted with the base plate 8 to increase the rigidity of the base plate 8, and the base reinforcing plate 9 is welded with the lower extension plate 18 and then bolted with the node plate 19 to realize the integral assembly of the energy dissipation support.

Considering that the loading plate 5 may be bent under the action of the earthquake reciprocating action under the condition of long extension length, thereby affecting the energy consumption capability of the whole support 16, four stiffening ribs 2 are arranged at the extension part of the loading plate to enhance the bending resistance of the extension part.

In addition, two pull rods 6 are arranged between the two end plates 7 and fixed by bolts, and the two pull rods 6 are respectively positioned at the front side and the rear side of the base plate 8 so as to enhance the overall rigidity of the whole end energy dissipation device.

In order to ensure that the base plate 8 has sufficient bending rigidity, holes are formed at the base reinforcing plate 9 to realize high-strength bolt connection between the base reinforcing plate and the base reinforcing plate. Meanwhile, in order to ensure that the loading plate 5 has enough bending rigidity and does not bend in the loading process, four stiffening ribs 2 are welded on the loading plate, and groove welding is adopted. As shown in fig. 5, two tie rods 6 are connected by bolts through the holes 11 reserved on the two side end plates 7. As shown in fig. 6, the damper 3 is provided with external threads 15, which are matched with the threads of the end plate reserved tie rod hole 12 and the loading plate reserved damper hole 14. The upper and

lower extension plates

1, 18 are not necessarily limited to those shown in the figures, depending on the particular installation in the structure.

And in the factory prefabricating stage, all the steel plates with the holes and the threads are firstly processed, and then the base plate 8 and the end plates 7 on the two sides are connected by groove welding. And then processing the threaded steel bar damper 3, and ensuring that the external threads 15 on the damper 3 are matched with the threads arranged in the end plate reserved pull rod hole 11 and the loading plate reserved damper hole 14. The loading plate 5 and the four stiffening steel plates 2 are connected by groove welding, as shown in fig. 7, the stiffening ribs 2 are connected with the left side and the right side of the base plate 8 and the upper extension plate 1.

As shown in fig. 1, a plurality of assembled energy-dissipating shock-absorbing support devices are arranged in the frame structure according to the present invention. The frame is connected with a lower extension plate 18 in the assembled energy dissipation and shock absorption supporting device by adopting a gusset plate 19, and the gusset plate is connected with the lower extension plate 18 by adopting a high-strength bolt 17.

During assembly on a construction site, firstly, the node plates 19 are welded on beam column flanges at two ends of the energy dissipation support 16 to be installed, the support connecting plates 10 at two ends are welded with the support 16, and then the energy dissipation support 16 is assembled: for one end of the energy dissipation device with the 16 ends supported, the base plate 8 and the base reinforcing plate 9 are connected through the hole 13 to form a high-strength bolt, the base reinforcing plate 9 and the lower extension plate 18 are connected through groove welding, and then the lower extension plate 18 and the node plate 19 are connected through bolts to fix the whole energy dissipation device with the end on the structure. Damper 3 is installed by first screwing damper 3 into one side end plate hole 12, then through load plate 5 pre-hole 14, and finally through the other side end plate hole 12, the installation sequence being detailed in fig. 9. For the other end of the support 16, the lower extension plate 18 and the gusset plate are connected by high-strength bolts, and the upper extension plate 1 and the lower extension plate 18 are welded by groove welding. Finally, installing the support 16, and screwing the high-strength bolt between the extension plate 1 and the support connecting plate 10 on the two ends, so that the whole energy consumption support is installed, and the partial schematic diagram of the structure after the installation is completed is shown in fig. 2.

It should be noted that when the damper is made of low yield point steel, the flame cutting is not needed during processing, which affects the energy consumption capability of the damper. In addition, the damper can be smoothly installed into the end energy consumption device in the factory prefabrication stage, and the requirement on the machining precision is high. The bottom plate is required to have enough in-plane bending rigidity, and the installation can be implemented after calculation. The number of dampers is not limited to that shown in the drawings and may be increased according to actual needs. Sufficient deformation space is reserved when the size of the end energy consumption device is designed, the distance between the loading plate 5 and the base plate 8 and the distance between the upper extension plate 1 and the end plate 7 are ensured, and the loading plate 5 and the base plate 8 are prevented from being in contact with each other when the damper deforms, so that the overall stability of the device is influenced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of subject matter that is disclosed herein is not intended to forego such subject matter, nor should the applicant consider that such subject matter is not considered part of the disclosed subject matter.

Claims

1. An assembled energy dissipation and shock absorption supporting device is characterized by comprising a support (16), an upper extension plate (1) and a lower extension plate (18);

both ends of the support (16) are connected with an upper extension plate (1), the upper extension plate (1) is parallel to the end surface of the support (16), and the upper extension plate (1) at one end of the support (16) is vertically connected with a lower extension plate (18); the other end of the support (16) is provided with an end energy dissipation device which is positioned between the upper extension plate (1) and the lower extension plate (18);

the end energy dissipation device comprises a loading plate (5), a damper (3), a base plate (8) and two end plates (7), wherein the loading plate (5) is vertically connected with the central part of the outer end face of the upper extension plate (1), the bottom of the base plate (8) is vertically connected with the end face of the lower extension plate (18), two sides of the base plate (8) are respectively vertically connected with one end plate (7), and the two end plates (7) are positioned on the left side and the right side of the base plate (8) and are parallel to the loading plate (5); threaded holes (12) are formed in the two end plates (7) and the loading plate (5), external threads (15) are formed in the two ends and the middle of the damper (3), the damper (3) penetrates through the two end plates (7) and the loading plate (5) and is in threaded connection with the two end plates and the loading plate, and the damper (3) is made of steel with a low yield point.

2. An assembled energy-dissipating shock-absorbing support device according to claim 1, wherein two tie rods (6) are connected between the two end plates (7), and the two tie rods (6) are respectively positioned at the front and rear sides of the base plate (8).

3. Assembled energy-dissipating shock-absorbing support device according to claim 1, characterized in that the loading plate (5) is provided with stiffening ribs (2) on its sides.

4. An assembled energy-dissipating shock-absorbing support device according to claim 1, wherein the number of the dampers (3) is plural and arranged along the length direction of the load plate (5).

5. An assembled energy-dissipating shock-absorbing support device according to claim 1, wherein a support connecting plate (10) is arranged between the upper extending plate (1) and the end face of the support (16), and two faces of the support connecting plate (10) are attached to the end faces of the upper extending plate (1) and the support (16).

6. An assembled energy-dissipating shock-absorbing support device according to claim 1, wherein a base reinforcing plate (9) is arranged between the bottom of the base plate (8) and the end surface of the lower extension plate (18), and two surfaces of the base reinforcing plate (9) are attached to the bottom of the base plate (8) and the end surface of the lower extension plate (18).

7. An assembled energy-dissipating shock-absorbing support as claimed in claim 1, in which the supports (16) and their connections are made of high strength steel.

8. An assembled energy-dissipating shock-absorbing support device according to claim 1, wherein the dampers (3) are shear type steel bar dampers.

9. A frame structure, characterized in that a plurality of fabricated energy-dissipating shock-absorbing support devices as claimed in any one of claims 1 to 8 are provided in the frame.

10. A frame structure as claimed in claim 9, characterised in that the frame is connected to the lower extension plates (18) of the fabricated energy dissipating and shock absorbing brace using gusset plates (19) and the gusset plates are connected to the lower extension plates (18) using high strength bolts (17).