CN113846767A

CN113846767A - Annular SMA cable-based graded energy-consumption type self-resetting buckling-restrained constraint device and manufacturing method thereof

Info

Publication number: CN113846767A
Application number: CN202111195655.5A
Authority: CN
Inventors: 王军文; 王绪贤; 何东浩; 刘丽杰; 李然; 李春雨; 张学明; 郭进
Original assignee: Shijiazhuang Tiedao University
Current assignee: Shijiazhuang Tiedao University
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2021-12-28
Anticipated expiration: 2041-10-14
Also published as: CN113846767B

Abstract

The invention relates to a graded energy consumption type self-resetting buckling restrained device based on an annular SMA cable and a manufacturing method thereof, belonging to the technical field of structural seismic resistance and post-seismic restorability. The method comprises the following steps: the energy-consuming steel plate comprises a cover plate, a steel plate energy-consuming inner core, a filling plate, a thin-diameter high-strength bolt and a thick-diameter high-strength bolt; the steel plate energy dissipation inner core comprises an A-type steel plate energy dissipation inner core and a B-type steel plate energy dissipation inner core; two types of strip holes are arranged along the length direction and are respectively used for the annular SMA inhaul cable and the high-strength bolt for applying the pretightening force to pass through. Under the normal operation or the action of small vibration, the deformation requirement of the structure is met through the limiting sliding connection assembly; under the action of a medium shock, the relative displacement of the energy consumption steel plates enables the annular SMA inhaul cable to be pulled, the self-resetting capability of the device is activated, and the primary energy consumption capability of the friction device between the energy consumption steel plates is activated; under the action of a large earthquake, the high-strength bolt starts to contact with the hole wall, the energy-consuming steel plate starts to enter plasticity, and the secondary energy-consuming capacity of the device is activated.

Description

Annular SMA cable-based graded energy-consumption type self-resetting buckling-restrained constraint device and manufacturing method thereof

Technical Field

The invention relates to a graded energy consumption type self-resetting buckling restrained device based on an annular SMA cable and a manufacturing method thereof, belonging to the technical field of structural seismic resistance and post-seismic restorability.

Background

The existing structure ductility earthquake-proof design and earthquake reduction and isolation design effectively realize the earthquake-proof design concept that the structure does not collapse after earthquake, but the structure residual displacement after earthquake causes the difficulty of structure restoration to be increased, even leads to the loss of structure function, so that the direct or indirect economic loss is huge, and the requirement on the recoverability of the structure after earthquake is very urgent.

The energy consumption capability of the existing buckling restrained brace under the action of an earthquake is considerable, but the generated plastic deformation can not be recovered, and the requirement of self-resetting of the structure can not be met. The self-resetting buckling restrained brace emerging in recent years is mainly composed of an energy consumption system and a self-resetting system which are connected in parallel and cooperatively work, the energy consumption system and the self-resetting system are mutually independent, the coordination can be realized only by a complex coupling structure, and the energy consumption performance of the brace is weakened due to the consideration of the resetting performance. Therefore, it is very necessary to research a device which can effectively utilize the ductility of the energy dissipation core material of the buckling restrained brace, greatly improve the energy dissipation capability of the structure and does not influence the self-resetting capability.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a graded energy consumption type self-resetting buckling restrained device based on an annular SMA cable and a manufacturing method thereof, wherein the ductility of an energy consumption steel plate is fully exerted, an energy consumption system and a self-resetting system are connected in series to form a system, and the self-resetting buckling restrained brace device meeting the graded earthquake fortification concept is not started under normal use or a small earthquake action, so that the deformation requirement of a structure is met, the primary energy consumption performance and the self-resetting performance of the device are activated under the medium earthquake action, and the stable self-resetting performance of the device is ensured and the secondary energy consumption performance is activated under the large earthquake action. The invention realizes the series structure of the graded energy consumption system and the self-resetting system, optimizes the problem of insufficient energy consumption capability of the traditional self-resetting energy consumption device, and the annular SMA cable and the inner core of the energy consumption steel plate can be conveniently replaced after an earthquake.

In order to solve the technical problems, the invention adopts the following technical scheme:

a hierarchical energy-consuming type self-resetting buckling restrained device based on an annular SMA cable comprises: the energy-consuming steel plate comprises a cover plate, a steel plate energy-consuming inner core, a filling plate, a thin-diameter high-strength bolt and a thick-diameter high-strength bolt; the steel plate energy dissipation inner core comprises an A-type steel plate energy dissipation inner core and a B-type steel plate energy dissipation inner core;

the energy-consuming inner cores of the A-type steel plates are two, and the energy-consuming inner cores of the B-type steel plates are one; the thickness of each energy-consuming inner core of the A-type steel plate is half of that of the B-type steel plate, and the B-type steel plate energy-consuming inner core is clamped between the two energy-consuming inner cores of the A-type steel plates; the energy-consuming inner core of the A-type steel plate is connected with the energy-consuming inner core of the B-type steel plate through a large-diameter high-strength bolt; the large-diameter high-strength bolt is applied with pretightening force, and a nut of the large-diameter high-strength bolt can extend into a reserved hole in the cover plate;

filling plates are arranged on two sides of the steel plate energy-consumption inner core; the steel plate energy-consumption inner core and the filling plates are clamped between the upper cover plate and the lower cover plate, namely the A-type steel plate energy-consumption inner core and the B-type steel plate energy-consumption inner core are wrapped between the upper cover plate and the lower cover plate and between the filling plates on two sides; the cover plate and the filling plate are connected through a thin-diameter high-strength bolt;

the steel plate energy dissipation inner cores comprise end sections, transition sections and core sections which are integrally connected; the core section of the steel plate energy-consuming inner core is provided with a plurality of groups of I-type long-strip-shaped openings and a plurality of groups of II-type long-strip-shaped openings, wherein the I-type long-strip-shaped openings are arranged on two sides of the II-type long-strip-shaped openings, namely the II-type long-strip-shaped openings are arranged among the groups of I-type long-strip-shaped openings at intervals; the I-type long-strip-shaped opening is used for the annular SMA cable to pass through, and the II-type long-strip-shaped opening is used for installing a large-diameter high-strength bolt; the positions of various openings on the energy-consuming inner core of the A-type steel plate correspond to those of various openings on the energy-consuming inner core of the B-type steel plate;

the annular SMA inhaul cables are symmetrically designed, and each annular SMA inhaul cable sequentially penetrates through a group of I-type elongated openings and the elongated holes in the cover plate corresponding to the elongated openings; two ends of the annular SMA cable are connected by a cable connector at the middle position of the restraint device, so that the annular SMA cable is closed loop, the annular SMA cable is ensured to be tightly attached to the hole wall, in addition, tubular protruding structures are sleeved in the I-type elongated holes and the elongated holes, and the annular SMA cable is sleeved in the tubular protruding structures;

end plates are fixedly arranged on the outer sides of the end sections of the steel plate energy-consuming inner cores, and stiffening ribs are arranged at the joints of the end plates and the end sections; the outer side of the end plate connected with the A-type steel plate energy dissipation inner core is also provided with a limiting connection movable assembly, and the outer side of the end plate connected with the B-type steel plate energy dissipation inner core is provided with a movable hinge;

the graded energy consumption performance of the graded energy consumption type self-resetting buckling restrained device is mainly provided by friction between the energy consumption inner cores of the A-type steel plates and the B-type steel plates and plastic deformation of the energy consumption inner cores of the steel plates.

Further, the width and the thickness of the filling plate can be adjusted; by adjusting the width and the thickness of the filling plate, certain gaps can be left between the energy-consuming inner core of the A-type steel plate and the energy-consuming inner core of the B-type steel plate and between the cover plate and the filling plate, and required transverse deformation spaces are provided for the energy-consuming inner core of the A-type steel plate and the energy-consuming inner core of the B-type steel plate.

Further, spacing connection movable subassembly is board-like pull formula structure, and it is including opening two perpendicular limb steel sheets that have the first rectangular shape hole of circle end and opening two perpendicular limb steel sheets that have the circular port, and two perpendicular limb steel sheets are connected with a structure perpendicular limb steel sheet, two perpendicular limb steel sheets with the end plate is connected, through connecting pin hub connection between two perpendicular limb steel sheets and the two perpendicular limb steel sheets, and connecting pin hub can slide in the first rectangular shape hole of circle end of two perpendicular limb steel sheets.

Furthermore, the movable hinge comprises two vertical limb steel plates with circular holes and two vertical limb steel plates with circular holes, the two vertical limb steel plates are connected with one structural vertical limb steel plate, the two vertical limb steel plates are connected with the end plate, the two vertical limb steel plates are connected with the two vertical limb steel plates through connecting pin shafts, and the connecting pin shafts penetrate through the two vertical limb steel plates and the circular holes in the two vertical limb steel plates; the difference between the movable hinge and the limit connecting movable assembly is that the holes of the vertical limb steel plate are circular holes, and the rest structures and the connecting measures are the same as those of the limit connecting movable assembly.

Furthermore, when the graded energy-consumption type self-resetting buckling-restrained device is under the action of pulling and pressing forces, the energy-consumption inner core of the A-type steel plate and the energy-consumption inner core of the B-type steel plate start to generate relative displacement, due to the existence of the I-type elongated opening, two ends of the annular SMA cable respectively only start to contact with the hole wall of the I-type elongated opening, and the annular SMA cable is always in a pulled state under the action of the acting force generated by a contact area, so that the self-resetting performance of the device is realized.

Further, if the sliding limit displacement value of the connecting pin shaft of the limiting connecting movable assembly when being pulled and pressed is S, the length of the II-type long-strip-shaped opening through which the large-diameter high-strength bolt passes is L, the diameter of the large-diameter high-strength bolt is D, and the net distance between the large-diameter high-strength bolt and the hole wall of the II-type long-strip-shaped opening is delta (L-D)/2, the graded energy consumption type self-resetting buckling-restrained brace device has a primary energy consumption capacity starting threshold value of the sliding limit displacement value S; at the moment, the energy-consuming inner cores of the A-type steel plates and the B-type steel plates start to generate relative displacement, the annular SMA cable starts to be pulled, and the energy-consuming capacity is provided by friction between the energy-consuming inner cores of the A-type steel plates and the energy-consuming inner cores of the B-type steel plates; when the loading displacement reaches S +2 delta, the large-diameter high-strength bolt penetrating through the class II elongated hole starts to contact with the hole wall of the class II elongated hole, the class A steel plate energy dissipation inner core and the class B steel plate energy dissipation inner core start to enter plasticity, meanwhile, the annular SMA cable also starts to enter plasticity, and the secondary energy dissipation capacity of the graded energy dissipation type self-resetting buckling restrained device is activated.

Further, the tubular protruding structure is a tubular protruding structure with an arc-shaped curved surface and used for reducing abrasion of the annular SMA cable and avoiding interference of the large-diameter high-strength bolt.

Further, the tubular projection formation may be replaced with a pulley.

Further, the annular SMA inhaul cables can be arranged in batches, and enter plasticity in batches by setting different relaxation lengths, so that the self-resetting performance of the device is more redundant.

The manufacturing method of the graded energy-consumption type self-resetting buckling restrained device based on the annular SMA inhaul cable comprises the following steps:

the method comprises the following steps: cutting an energy-consuming inner core of a type A steel plate and an energy-consuming inner core of a type B steel plate by adopting low-strength steel plates of the same type, enabling the energy-consuming inner cores to be provided with an end section, a transition section and a core section according to the structural requirements, arranging a plurality of groups of type I elongated openings and a plurality of groups of type II elongated openings in the core section according to the types of required holes, and rounding the edges of the hole walls of the type I elongated openings;

step two: manufacturing a cover plate, a filling plate, a tubular projecting structure with an arc-shaped curved surface inside, an end plate, a stiffening rib, a limiting connection movable assembly and a movable hinge by adopting high-strength steel;

step three: the cover plates are two in total, the cover plates are directly connected with the cover plates through the filling plates, the shapes of the filling plates are correspondingly matched with the shapes of the steel plate energy-consuming inner cores, and the cover plates are connected with the filling plates through thin-diameter high-strength bolts; a type A steel plate energy dissipation inner core and a type B steel plate energy dissipation inner core are arranged between the cover plate and the filling plate and are connected through a large-diameter high-strength bolt, a pre-tightening force needs to be applied to the large-diameter high-strength bolt, a nut and a nut of the large-diameter high-strength bolt can extend into a reserved hole of the cover plate, the reserved hole is not required to be too large, and the limiting effect on the bolt needs to be considered; a certain gap is reserved between the energy-consuming inner core of the A-type steel plate and the energy-consuming inner core of the B-type steel plate and between the cover plate and the filling plate through the wide and thick structure of the filling plate, so that a required transverse deformation space is provided for the energy-consuming inner core of the A-type steel plate and the energy-consuming inner core of the B-type steel plate; the upper end and the lower end of the tubular projecting structure with the arc-shaped curved surface inside are welded on the strip hole of the cover plate;

step four: the end parts of the energy-consuming inner core of the A-type steel plate and the energy-consuming inner core of the B-type steel plate are provided with end plates, and stiffening ribs are arranged at the connecting parts to improve the structural stability and enable the structural stress to be more reasonable; the outer side of the end plate is respectively provided with a limit connection movable assembly and a movable hinge;

step five: wear to establish annular SMA cable, annular SMA cable passes through I type rectangular shape trompil, the rectangular hole on the apron of steel sheet power consumption inner core and passes the inside tubulose protrusion structure that has the arc curved surface, utilizes the cable connector to connect and forms the closed loop in device middle part position, guarantees that annular SMA cable pastes tight pore wall to accomplish hierarchical power consumption type from restoring to the throne buckling restrained device's preparation.

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

the graded energy consumption type self-resetting buckling restrained device based on the annular SMA cable has the advantages that the mechanical principle is clear, the structural structure is simple, the serial connection structure of an energy consumption system and the self-resetting system is realized, the device is safe and reliable, the ductility of steel is favorably exerted, the stable and excellent self-resetting performance is realized by utilizing the annular SMA cable, the energy consumption performance of the device is graded, the energy consumption capacity is improved and optimized, the deformation requirement of the structure can be met under the normal use or the small earthquake action through design, the self-resetting performance and the primary energy consumption capacity are activated under the medium earthquake action, the stable self-resetting performance of the device is ensured under the large earthquake action, the secondary energy consumption capacity is activated, and the annular SMA cable and the energy consumption steel plate also have the characteristic of convenient replacement.

Drawings

FIG. 1 is a perspective view of a graded energy dissipation type self-resetting buckling restrained device based on an annular SMA cable;

FIG. 2 is a front view of the graded energy dissipation type self-resetting buckling restrained device based on the annular SMA inhaul cable;

FIG. 3 is a top view of the graded energy dissipation type self-resetting buckling restrained device based on the annular SMA inhaul cable;

FIG. 4 is an exploded view of two types of steel plates of the energy-dissipating inner core of the steel plate;

FIG. 5 is an elevation view showing the structural relationship between the energy-dissipating inner core of the type A steel plate and the end plate;

FIG. 6 is an elevation view showing the structural relationship between the energy-dissipating inner core of the B-type steel plate and the end plate;

FIG. 7 is a schematic diagram of the structural relationship between energy-consuming inner cores of two types of steel plates and end plates, annular SMA cables and large-diameter high-strength bolts;

FIG. 8 is a schematic view of a cover plate configuration;

FIG. 9 is a schematic view of a fill plate construction;

FIG. 10 is a schematic view of a tubular projection formation with an arcuate curved surface therein;

FIG. 11 is an exploded assembly view of the spacing joint movable assembly;

FIG. 12 is an exploded assembly view of the living hinge;

fig. 13 is an overall exploded view of the present invention.

FIG. 14 is a diagram of the static, tensile, and compressive working mechanism of the present invention under the action of a medium shock.

Detailed Description

The invention is described in further detail below with reference to figures 1-14 and the detailed description.

Example 1

As shown in fig. 1-14, the invention relates to a graded energy dissipation type self-resetting anti-buckling constraint device based on an annular SMA cable, which comprises: the steel plate energy-consuming core is composed of a cover plate 4, a steel plate energy-consuming inner core, a filling plate 5, a thin-diameter high-strength bolt 7 and a thick-diameter high-strength bolt 8. The steel plate energy dissipation inner core comprises an A-type steel plate energy dissipation inner core 1 and a B-type steel plate energy dissipation inner core 2. As shown in fig. 4, the energy dissipation inner core 1 made of the type a steel plates is two, and the energy dissipation inner core 2 made of the type B steel plates is one. The thickness of each A-type steel plate energy dissipation inner core 1 is half of that of a B-type steel plate energy dissipation inner core 2, and the B-type steel plate energy dissipation inner core 2 is clamped between the two A-type steel plate energy dissipation inner cores 1. The A-type steel plate energy dissipation inner core 1 and the B-type steel plate energy dissipation inner core 2 are connected through a large-diameter high-strength bolt 8. The large-diameter high-strength bolt 8 is applied with pretightening force, and a nut of the large-diameter high-strength bolt 8 can extend into the preformed hole 4c in the cover plate 4. As shown in fig. 8-9, both sides of the steel plate energy dissipation core are provided with filling plates 5. The cover plates 4 are an upper cover plate and a lower cover plate, a steel plate energy-consuming inner core and a filling plate 5 are clamped between the upper cover plate 4 and the lower cover plate 4, namely, the A-type steel plate energy-consuming inner core 1 and the B-type steel plate energy-consuming inner core 2 are wrapped between the upper cover plate 4 and the lower cover plate 4 and the filling plates 5 on two sides. The cover plate 4 and the filling plate 5 are connected through a thin-diameter high-strength bolt 7. In this embodiment, the width and thickness of the filling plate 5 are adjustable. By adjusting the width and thickness of the filling plate 5, certain gaps can be left between the energy-consuming inner core 1 of the A-type steel plate and the energy-consuming inner core 2 of the B-type steel plate and between the cover plate 4 and the filling plate 5, and a required transverse deformation space is provided for the energy-consuming inner core 1 of the A-type steel plate and the energy-consuming inner core 2 of the B-type steel plate.

As shown in fig. 4, the steel plate dissipative core includes integrally connected

end sections

1a, 2a,

transition sections

1b, 2b, and

core sections

1c, 2 c. The core section 1c of steel sheet power consumption inner core, 2c are provided with I class rectangular shape trompil 1d of multiunit, 2d and II class rectangular shape trompil 1e of multiunit, 2e, and I class

rectangular shape trompil

1d, 2d set up in II class

rectangular shape trompil

1e, 2e both sides, and II class

rectangular shape trompil

1e, 2e interval set up in the middle of I class rectangular shape trompil 1d of multiunit, 2d promptly. Wherein, I type

rectangular shape trompil

1d, 2d are used for annular SMA cable 3 to pass, and II type

rectangular shape trompil

1e, 2e are used for installing thick diameter high strength bolt 8. The positions of various openings on the A-type steel plate energy dissipation inner core 1 and the B-type steel plate energy dissipation inner core 2 correspond to each other.

As shown in fig. 1, 3 and 13, the annular SMA cables 3 are two symmetrically designed, and each of the two is sequentially passed through a group of the i-type

elongated openings

1d and 2d and the corresponding elongated hole 4b on the cover plate 4. Two ends of annular SMA cable 3 are connected with cable connector 11 at the middle position of restraint device for 3 closed loops of annular SMA cable guarantee that 3 paste tight pore walls of annular SMA cable, in addition, still all overlap in I class

rectangular shape trompil

1d, 2d and rectangular hole 4b and be equipped with

tubulose protrusion structure

6, and 3 covers of annular SMA cable are established inside tubulose protrusion structure 6. End plates 9 are fixedly arranged on the outer sides of the

end sections

1a and 2a of the steel plate energy dissipation inner core, and stiffening ribs 10 are arranged at the joints of the end plates 9 and the

end sections

1a and 2 a. As shown in fig. 11-12, the outer side of the end plate 9 connected to the class a steel plate energy dissipation inner core 1 is further provided with a limit connection movable assembly 12, and the outer side of the end plate 9 connected to the class B steel plate energy dissipation inner core 2 is provided with a movable hinge 13. Spacing connection movable part 12 is board-like pull formula structure, and it is including opening two vertical limb steel sheet 12b that have round end rectangular hole and opening two vertical limb steel sheet 12d that have the circular port, and two vertical limb steel sheet 12b are connected with a structure vertical limb steel sheet 12a, and two vertical limb steel sheet 12d are connected with end plate 9, connect through connecting pin axle 12c between two vertical limb steel sheet 12b and the two vertical limb steel sheet 12d, and connecting pin axle 12c can slide in two vertical limb steel sheet 12 b's round end rectangular hole. The movable hinge 13 comprises two vertical limb steel plates 13b provided with circular holes and two vertical limb steel plates 13d provided with circular holes, the two vertical limb steel plates 13b are connected with a structural vertical limb steel plate 13a, the two vertical limb steel plates 13d are connected with the end plate 9, the two vertical limb steel plates 13b are connected with the two vertical limb steel plates 13d through connecting pin shafts 13c, and the connecting pin shafts 13c penetrate through the circular holes in the two vertical limb steel plates 13b and the two vertical limb steel plates 13 d. Namely, the movable hinge 13 is different from the limit connecting movable assembly 12 only in that the holes of the vertical limb steel plate 13b are circular holes, and the rest of the structure and the connecting measures are the same as those of the limit connecting movable assembly 12.

The graded energy consumption performance of the graded energy consumption type self-resetting buckling restrained device is mainly provided by friction between the A-type steel plate energy consumption inner core 1 and the B-type steel plate energy consumption inner core 2 and plastic deformation of the steel plate energy consumption inner core. When the graded energy-consumption type self-resetting buckling-restrained restraining device is under the action of pulling and pressing forces, the energy-consumption inner core 1 of the A-type steel plate and the energy-consumption inner core 2 of the B-type steel plate start to generate relative displacement, due to the existence of the I-type

elongated openings

1d and 2d, two ends of the annular SMA cable 3 respectively only start to contact with hole walls of the I-type

elongated openings

1d and 2d, the annular SMA cable 3 is always in a pulled state due to the action force generated by a contact area, and therefore the self-resetting performance of the device is achieved. The sliding limit displacement value of a connecting pin shaft 12c of the limiting connecting movable assembly 12 when being pulled and pressed is S, the length of the II-type long-strip-shaped

openings

1e and 2e for the thick-diameter high-strength bolt 8 to penetrate through is L, the diameter D of the thick-diameter high-strength bolt 8 is D, the net distance between the thick-diameter high-strength bolt 8 and the hole walls of the II-type long-strip-shaped

openings

1e and 2e is delta (L-D)/2, and the starting threshold value of the primary energy consumption capacity of the grading energy consumption type self-resetting buckling-prevention restraining and supporting device is the sliding limit displacement value S. At the moment, the energy-consuming inner core 1 of the A-type steel plate and the energy-consuming inner core 2 of the B-type steel plate start to generate relative displacement, the annular SMA inhaul cable 3 starts to be pulled, and the energy-consuming capacity is provided through friction between the energy-consuming inner core 1 of the A-type steel plate and the energy-consuming inner core 2 of the B-type steel plate. When the loading displacement reaches S +2 delta, the large-diameter high-strength bolt 8 penetrating through the II-class

elongated openings

1e and 2e is in contact with the hole walls of the II-class

elongated openings

1e and 2e, the A-class steel plate energy dissipation inner core 1 and the B-class steel plate energy dissipation inner core 2 begin to enter plasticity, the annular SMA cable 3 also begins to enter plasticity, and the secondary energy dissipation capacity of the graded energy dissipation type self-resetting buckling restrained device is activated.

In this embodiment, the tubular protruding structure 6 is a tubular protruding structure with an arc-shaped curved surface, and is used to reduce the wear of the annular SMA cable 3 and avoid the interference of the large-diameter high-strength bolt 8. It may be replaced with a pulley.

the method comprises the following steps: adopt low strength steel sheet cutting out type A steel sheet power consumption inner core 1, type B steel sheet power consumption inner core 2 of the same type, according to its structure requirement, make it possess

tip section

1a, 2a, changeover portion 1B, 2B and

core section

1c, 2c, and set up I class of rectangular shape trompil of multiunit 1d, 2d and II class of rectangular shape trompil of multiunit 1e, 2e at

core section

1c, 2c according to required perforation type, and to I class of

rectangular shape trompil

1d, 2d pore wall edge carries out the radius and handles.

Step two: the cover plate 4, the filling plate 5, the tubular projecting structure 6 with the arc-shaped curved surface inside, the end plate 9, the stiffening rib 10, the limit connecting movable assembly 12 and the movable hinge 13 are made of high-strength steel.

Step three: the total number of the cover plates 4 is two, the cover plates 4 are directly connected with the filling plates 5, the shapes of the filling plates 5 are correspondingly matched with the shape of the steel plate energy-consuming inner core, and the cover plates 4 are connected with the filling plates 5 by adopting thin-diameter high-strength bolts 7. A type A steel plate energy dissipation inner core 1 and a type B steel plate energy dissipation inner core 2 are arranged between the cover plate 4 and the filling plate 5, the type A steel plate energy dissipation inner core 1 and the type B steel plate energy dissipation inner core 2 are connected through a large-diameter high-strength bolt 8, the large-diameter high-strength bolt 8 needs to exert pre-tightening force, a nut and a nut of the large-diameter high-strength bolt can stretch into a reserved hole 4c of the cover plate 4, the reserved hole 4c is not too large, and the limiting effect on the bolt needs to be considered. A certain gap is reserved between the A-type steel plate energy dissipation inner core 1 and the B-type steel plate energy dissipation inner core 2, the cover plate 4 and the filling plate 5 through the wide and thick structure of the filling plate 5, and a required transverse deformation space is provided for the A-type steel plate energy dissipation inner core 1 and the B-type steel plate energy dissipation inner core 2. The upper and lower ends of the tubular projecting structure 6 with the arc-shaped curved surface inside are welded to the elongated hole 4b of the cover plate 4.

Step four: the end parts of the A-type steel plate energy dissipation inner core 1 and the B-type steel plate energy dissipation inner core 2 are provided with end plates 9, and stiffening ribs 10 are arranged at the joints and used for improving the structural stability and enabling the structural stress to be more reasonable. The outer side of the end plate 9 is respectively provided with a limit connection movable assembly 12 and a movable hinge 13.

Step five: wear to establish annular SMA cable 3, annular SMA cable 3 passes through I type

rectangular opening

1d, 2d, the rectangular hole 4b on the apron 4 of steel sheet power consumption inner core and passes the tubulose protrusion structure 6 that has the arc curved surface inside, utilizes cable connector 11 to connect at the device middle part position and forms the closed loop, guarantees that annular SMA cable pastes tight pore wall to accomplish hierarchical power consumption type from the preparation of bucking restraint device of restoring to throne.

Example 2

In addition to the device assembly and fabrication of example 1, the loop SMA cable 3 can be batch activated in a set, i.e. batch into plastic with different slack lengths, thereby making the self-resetting performance of the device more redundant. Otherwise, the procedure was as in example 1.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same. All equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention and protected by the patent laws.

Claims

1. The utility model provides a hierarchical energy consumption type is from restoring to throne buckling restrained device based on annular SMA cable which characterized in that: the method comprises the following steps: the steel plate energy-consumption steel plate comprises a cover plate (4), a steel plate energy-consumption inner core, a filling plate (5), a thin-diameter high-strength bolt (7) and a thick-diameter high-strength bolt (8); the steel plate energy dissipation inner core comprises an A-type steel plate energy dissipation inner core (1) and a B-type steel plate energy dissipation inner core (2);

the energy-consuming inner cores (1) of the A-type steel plates are two, and the energy-consuming inner cores (2) of the B-type steel plates are one; the thickness of each A-type steel plate energy dissipation inner core (1) is half of that of a B-type steel plate energy dissipation inner core (2), and the B-type steel plate energy dissipation inner core (2) is clamped between the two A-type steel plate energy dissipation inner cores (1); the A-type steel plate energy dissipation inner core (1) and the B-type steel plate energy dissipation inner core (2) are connected through a large-diameter high-strength bolt (8); pretightening force is applied to the large-diameter high-strength bolt (8), and a nut of the large-diameter high-strength bolt (8) can extend into a preformed hole (4c) in the cover plate (4);

filling plates (5) are arranged on two sides of the steel plate energy-consuming inner core; the steel plate energy-consumption inner core and the filling plates (5) are clamped between the upper cover plate (4) and the lower cover plate (4), namely the A-type steel plate energy-consumption inner core (1) and the B-type steel plate energy-consumption inner core (2) are wrapped between the upper cover plate (4) and the lower cover plate (4) and the filling plates (5) on the two sides; the cover plate (4) is connected with the filling plate (5) through a thin-diameter high-strength bolt (7);

the steel plate energy dissipation inner cores comprise end sections (1a and 2a), transition sections (1b and 2b) and core sections (1c and 2c) which are integrally connected; the core sections (1c and 2c) of the steel plate energy-consuming inner core are provided with a plurality of groups of I-type long-strip-shaped openings (1d and 2d) and a plurality of groups of II-type long-strip-shaped openings (1e and 2e), wherein the I-type long-strip-shaped openings (1d and 2d) are arranged on two sides of the II-type long-strip-shaped openings (1e and 2e), namely the II-type long-strip-shaped openings (1e and 2e) are arranged in the middle of the groups of I-type long-strip-shaped openings (1d and 2d) at intervals; the I-type elongated holes (1d and 2d) are used for the annular SMA inhaul cable (3) to pass through, and the II-type elongated holes (1e and 2e) are used for mounting the large-diameter high-strength bolt (8); the positions of various openings on the A-type steel plate energy dissipation inner core (1) and the B-type steel plate energy dissipation inner core (2) correspond to each other;

the annular SMA inhaul cables (3) are symmetrically designed, and each annular SMA inhaul cable sequentially penetrates through a group of I-type elongated open holes (1d, 2d) and the elongated hole (4b) on the cover plate (4) corresponding to the group of I-type elongated open holes; two end heads of the annular SMA cable (3) are connected by a cable connector (11) at the middle position of the restraint device, so that the annular SMA cable (3) is closed-loop, the annular SMA cable (3) is ensured to be tightly attached to the hole wall, in addition, tubular protruding structures (6) are also sleeved in the I-type elongated holes (1d and 2d) and the elongated hole (4b), and the annular SMA cable (3) is sleeved in the tubular protruding structures (6);

end plates (9) are fixedly arranged on the outer sides of the end sections (1a and 2a) of the steel plate energy dissipation inner core, and stiffening ribs (10) are arranged at the joints of the end plates (9) and the end sections (1a and 2 a); wherein, the outer side of the end plate (9) connected with the A-type steel plate energy dissipation inner core (1) is also provided with a limit connection movable assembly (12), and the outer side of the end plate (9) connected with the B-type steel plate energy dissipation inner core (2) is provided with a movable hinge (13);

the graded energy consumption performance of the graded energy consumption type self-resetting buckling restrained device is mainly provided by friction between the A-type steel plate energy consumption inner core (1) and the B-type steel plate energy consumption inner core (2) and plastic deformation of the steel plate energy consumption inner core.

2. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: the width and the thickness of the filling plate (5) are adjustable; by adjusting the width and the thickness of the filling plate (5), certain gaps can be reserved among the A-type steel plate energy-consumption inner core (1), the B-type steel plate energy-consumption inner core (2), the cover plate (4) and the filling plate (5), and a required transverse deformation space is provided for the A-type steel plate energy-consumption inner core (1) and the B-type steel plate energy-consumption inner core (2).

3. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: spacing connection movable part (12) are board-like pull formula structure, and it is including opening two perpendicular limb steel sheet (12b) that have round end rectangular hole and opening two perpendicular limb steel sheet (12d) that have the circular port, and two are stood limb steel sheet (12b) and are constructed perpendicular limb steel sheet (12a) and be connected, two perpendicular limb steel sheet (12d) with end plate (9) are connected, and two are stood limb steel sheet (12b) and two and are stood between limb steel sheet (12d) and be connected through connecting pin axle (12c), and connecting pin axle (12c) can slide in the round end rectangular hole of two perpendicular limb steel sheet (12 b).

4. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: the movable hinge (13) comprises two vertical limb steel plates (13b) with circular holes and two vertical limb steel plates (13d) with circular holes, the two vertical limb steel plates (13b) are connected with one structural vertical limb steel plate (13a), the two vertical limb steel plates (13d) are connected with the end plate (9), the two vertical limb steel plates (13b) are connected with the two vertical limb steel plates (13d) through connecting pin shafts (13c), and the connecting pin shafts (13c) penetrate through the circular holes in the two vertical limb steel plates (13b) and the two vertical limb steel plates (13 d); namely, the movable hinge (13) and the limit connecting movable assembly (12) are different only in that the holes of the vertical limb steel plate (13b) are circular holes, and the rest of the structure and the connecting measures are the same as those of the limit connecting movable assembly (12).

5. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: when the graded energy-consumption type self-resetting buckling-restrained device is under the action of pulling and pressing force, the energy-consumption inner core (1) of the A-type steel plate and the energy-consumption inner core (2) of the B-type steel plate start to generate relative displacement, due to the existence of the I-type elongated openings (1d and 2d), two ends of the annular SMA cable (3) respectively only start to contact with hole walls of the I-type elongated openings (1d and 2d), and the annular SMA cable (3) is always in a tensioned state due to the action force generated by a contact area, so that the self-resetting performance of the device is realized.

6. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: setting the sliding limit displacement value of a connecting pin shaft (12c) of the limiting connecting movable assembly (12) under tension and compression as S, setting the length of II-type elongated openings (1e and 2e) for the thick-diameter high-strength bolt (8) to pass through as L, setting the diameter D of the thick-diameter high-strength bolt (8), setting the net distance between the thick-diameter high-strength bolt (8) and the hole walls of the II-type elongated openings (1e and 2e) as delta (L-D)/2, and setting the starting threshold value of the primary energy consumption capacity of the grading energy consumption self-resetting buckling-restrained brace as the sliding limit displacement value S; at the moment, the energy-consuming inner core (1) of the A-type steel plate and the energy-consuming inner core (2) of the B-type steel plate start to generate relative displacement, the annular SMA cable (3) starts to be pulled, and the energy-consuming capacity is provided through friction between the energy-consuming inner core (1) of the A-type steel plate and the energy-consuming inner core (2) of the B-type steel plate; when the loading displacement reaches S +2 delta, the large-diameter high-strength bolt (8) penetrating through the II-class elongated openings (1e and 2e) is in contact with the hole walls of the II-class elongated openings (1e and 2e), the A-class steel plate energy-consuming inner core (1) and the B-class steel plate energy-consuming inner core (2) begin to enter plasticity, the annular SMA cable (3) also begins to enter plasticity, and the secondary energy-consuming capacity of the graded energy-consuming self-resetting buckling-preventing restraining device is activated.

7. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: the tubular protruding structure (6) is a tubular protruding structure with an arc-shaped curved surface and is used for reducing abrasion of the annular SMA inhaul cable (3) and avoiding interference of the large-diameter high-strength bolt (8).

8. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: the tubular projecting structure (6) can be replaced by a pulley.

9. The graded energy-dissipating type self-resetting buckling restrained device based on the annular SMA inhaul cable, which is characterized in that: the annular SMA inhaul cables (3) can be arranged in batches, and enter plasticity in batches by setting different relaxation lengths, so that the self-resetting performance of the device is more redundant.

10. The manufacturing method of the graded energy-consumption type self-resetting buckling restrained device based on the annular SMA inhaul cable is characterized by comprising the following steps of:

the method comprises the following steps: cutting an energy-consuming inner core (1) and an energy-consuming inner core (2) of an A-type steel plate and a B-type steel plate by using low-strength steel plates of the same type, enabling the energy-consuming inner cores to be provided with end sections (1a and 2a), transition sections (1B and 2B) and core sections (1c and 2c) according to the structural requirements, arranging a plurality of groups of I-type elongated openings (1d and 2d) and a plurality of groups of II-type elongated openings (1e and 2e) in the core sections (1c and 2c) according to the required perforation types, and rounding the hole wall edges of the I-type elongated openings (1d and 2 d);

step two: manufacturing a cover plate (4), a filling plate (5), a tubular projecting structure (6) with an arc-shaped curved surface inside, an end plate (9), a stiffening rib (10), a limiting connection movable assembly (12) and a movable hinge (13) by adopting high-strength steel;

step three: the total number of the cover plates (4) is two, the cover plates (4) are directly connected with filling plates (5), the shapes of the filling plates (5) are correspondingly matched with the appearance of the steel plate energy-consuming inner core, and the cover plates (4) are connected with the filling plates (5) by adopting thin-diameter high-strength bolts (7); a type-A steel plate energy-consuming inner core (1) and a type-B steel plate energy-consuming inner core (2) are arranged between the cover plate (4) and the filling plate (5), the type-A steel plate energy-consuming inner core (1) and the type-B steel plate energy-consuming inner core (2) are connected through a large-diameter high-strength bolt (8), the large-diameter high-strength bolt (8) needs to be pre-tightened, a nut and a nut of the large-diameter high-strength bolt can extend into a reserved hole (4c) of the cover plate (4), the reserved hole (4c) is not too large, and the limit effect on the bolt needs to be considered; certain gaps are reserved among the A-type steel plate energy-consuming inner core (1), the B-type steel plate energy-consuming inner core (2), the cover plate (4) and the filling plate (5) through the wide and thick structure of the filling plate (5), and required transverse deformation spaces are provided for the A-type steel plate energy-consuming inner core (1) and the B-type steel plate energy-consuming inner core (2); the upper end and the lower end of a tubular projecting structure (6) with an arc-shaped curved surface inside are welded on the strip hole (4b) of the cover plate (4);

step four: the end parts of the A-type steel plate energy dissipation inner core (1) and the B-type steel plate energy dissipation inner core (2) are provided with end plates (9), and stiffening ribs (10) are arranged at the connecting parts to improve the structural stability and enable the structural stress to be more reasonable; the outer side of the end plate (9) is respectively provided with a limit connection movable assembly (12) and a movable hinge (13);

step five: wear to establish annular SMA cable (3), annular SMA cable (3) are through I type rectangular shape trompil (1d, 2d) of steel sheet power consumption inner core, rectangular hole (4b) on apron (4) and pass inside tubulose protrusion structure (6) that have the arc curved surface, utilize cable connector (11) to connect at device middle part position and form the closed loop, guarantee that annular SMA cable pastes tight pore wall to accomplish hierarchical power consumption type from the preparation of bucking restraint device that restores to the throne.