CN113818739B - Staged yield self-resetting connecting beam column and application and staged energy consumption method thereof - Google Patents
Staged yield self-resetting connecting beam column and application and staged energy consumption method thereof Download PDFInfo
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- CN113818739B CN113818739B CN202111283825.5A CN202111283825A CN113818739B CN 113818739 B CN113818739 B CN 113818739B CN 202111283825 A CN202111283825 A CN 202111283825A CN 113818739 B CN113818739 B CN 113818739B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
Abstract
The invention provides a staged yielding self-resetting connecting beam column and an application and staged energy consumption method thereof. The tie beam column may include: the energy-consumption self-resetting device comprises a first column, a shear wall module, a coordination module, an energy-consumption self-resetting module and a second column which are connected in sequence; wherein the first column body and the second column body are arranged side by side; the shear wall module comprises at least one shear wall fixedly connected with the first column body; the cooperation module is elastically connected with the at least one shear wall; the energy consumption self-resetting module comprises at least one energy consumption self-resetting unit, and the energy consumption self-resetting unit comprises a first cross beam, a second cross beam and an energy consumption self-resetting assembly. The method adopts the connecting beam column to resist earthquake and consume energy. The application comprises an application in wind induced vibration control. The connecting beam can properly control the strength and rigidity of the whole structure and reduce the acceleration response of the structure; the invention utilizes the multi-stage yield characteristic and the self-resetting member, can reduce the residual deformation after the earthquake and reduce the repair work and cost after the earthquake.
Description
Technical Field
The invention relates to the field of structural engineering, in particular to a staged yielding self-resetting connecting beam column and a staged energy consumption method.
Background
Earthquake disasters have brought a lot of negative effects to society and crowds, and structural engineers seek an efficient earthquake-resistant structural system to reduce the possible deformation of a structure in the earthquake process and reduce the residual deformation after the earthquake.
At present, the energy consumption damage can be concentrated on the components through reasonably designing and installing structures such as connecting beams, supports and the like, so that the damage of a main structure is avoided, but the structure after an earthquake is provided with remarkable residual deformation, the components are difficult to replace, the structure has to be overturned and rebuilt, so that the resource waste is large, and the normal life of people is seriously influenced. The introduction of high performance materials and the provision of new structures can break through the above technical bottlenecks.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a staged yielding self-resetting coupling beam column and a staged energy consumption method, which realize the multi-stage yielding characteristic of the coupling beam by arranging members with different yield strengths, stop structures and the like, and the coupling beam is provided with a structure with self-resetting capability, so that the residual deformation of the structure can be reduced, and the problems of obvious residual deformation and waste of structural reconstruction resources of the existing structure can be solved.
In order to achieve the above object, the present invention provides, in one aspect, a staged yielding self-resetting girder connecting column.
The coupling beam column includes: the energy-consumption self-resetting device comprises a first column, a shear wall module, a coordination module, an energy-consumption self-resetting module and a second column which are connected in sequence; wherein the first column body and the second column body are arranged side by side; the shear wall module comprises at least one shear wall fixedly connected with the first column body, and the plurality of shear walls are sequentially arranged from top to bottom under the condition that the number of the shear walls is multiple; the cooperation module is elastically connected with the at least one shear wall; the energy-consuming self-resetting module can comprise at least one energy-consuming self-resetting unit, and the energy-consuming self-resetting units are sequentially arranged from top to bottom under the condition that the number of the energy-consuming self-resetting units is multiple, and each energy-consuming self-resetting unit comprises at least one first cross beam, at least one second cross beam and at least one energy-consuming self-resetting assembly; wherein the first beam limits the relative deformation between the second column and the cooperating module within a predetermined range; two ends of the second cross beam are respectively hinged with the cooperation module and the second column body; and two ends of the energy-consuming self-resetting assembly are respectively hinged with the second cylinder and the cooperative module, and the energy-consuming self-resetting assembly has self-resetting capability.
Furthermore, the cooperation module is connected with the at least one shear wall through a plurality of elastic connecting pieces, and each elastic connecting piece comprises a first disc spring, a central screw rod and a second disc spring which are sequentially connected.
Further, the first cylinder and the second cylinder are vertically arranged.
Further, the shear wall module may comprise a slotted steel plate shear wall.
Further, the collaboration module may include at least one collaboration element; the number of the shear walls and the number of the cooperative pieces are the same and the shear walls and the cooperative pieces can correspond to each other one by one; the number of the cooperative pieces and the energy consumption self-reset units is the same and can correspond to each other one by one.
Furthermore, the first end of the first cross beam is fixedly connected with the cooperation module, the second end of the first cross beam is connected with the second cylinder in a sliding mode, and the relative sliding direction of the second end of the first cross beam and the second cylinder is the same as the axial direction of the second cylinder.
The connecting beam column further comprises first connecting plate assemblies, the first connecting plate assemblies are the same in number as the first cross beams and correspond to the first cross beams one by one, each first connecting plate assembly can enable the second end of the corresponding first cross beam to be in sliding connection with the second column body, each first connecting plate assembly comprises a plurality of first connecting plates and a plurality of second connecting plates, round holes are formed in the first connecting plates and fixedly connected with the second ends of the first cross beams, and under the condition that the number of the first connecting plates is multiple, the first connecting plates are arranged oppositely, and the round holes share the same axis; the second connecting plates are provided with oblong holes and are fixedly connected with the second cylinders, and under the condition that the number of the second connecting plates is multiple, the second connecting plates are oppositely arranged and the oblong holes are coaxial; the first connecting plate and the second connecting plate are connected through a connecting piece. Still further, the connector may include a pin, bolt, or the like.
Further, the energy consuming self-resetting assembly may comprise: the self-resetting piston component comprises a central rod, a sleeve, a self-resetting component group, a first end plate, a second end plate and a limiting piston component; the inner wall of the sleeve is provided with a limiting piece, the limiting piece can limit the second end plate, the first end of the sleeve deviates from the central rod, and the second end of the sleeve is fixedly connected with one end of the central rod; the self-resetting element group comprises a plurality of self-resetting elements, the self-resetting elements are made of shape memory alloy materials, two ends of each self-resetting element are respectively buckled on the first end plate and the second end plate through fixing pieces, and the self-resetting element pretightening force can be adjusted by adjusting the fixing pieces; the first end plate is positioned outside the sleeve and can abut against the first end of the sleeve; a second end plate disposed in the sleeve between the retainer piston member and the second end of the sleeve; the limiting piston part comprises a piston rod, a first piston plate and a second piston plate, the first piston plate and the second piston plate are arranged on the piston rod, the piston rod penetrates through the first end plate, one end of the piston rod is hinged to the cooperation part, the first piston plate and the second piston plate are located between the first end plate and the second end plate, the first piston plate is adjacent to the first end plate and can be limited by the first end plate, and the second piston plate is adjacent to the second end plate and can be limited by the second end plate.
Further, the first end plate abuts against the first end of the sleeve under the pretension force from the resetting element.
Further, the self-resetting element has two states, wherein the first state is a pre-tightening state, namely the pre-tightening force is applied by adjusting the fixing element, and the second state is a non-pre-tightening state, but when the self-resetting element deforms and consumes energy, the self-resetting element is stretched and is converted into the pre-tightening state.
Further, the center rod and the sleeve may have a common central axis, and an end of the center rod facing away from the sleeve is further provided with a conversion member and a connecting plate, which may correspond to a seventh connecting plate described below.
Furthermore, the energy-consuming self-resetting component can further comprise a fixing plate, and two plate surfaces of the fixing plate are fixedly connected with the second end of the sleeve and one end of the central rod respectively.
The invention also provides a staged energy consumption method.
The method comprises the step of adopting the staged yielding self-resetting connecting beam column to resist earthquake and consume energy.
In still another aspect, the invention provides an application of the self-resetting coupling beam column with staged yield.
The application may comprise an application in wind induced vibration control, such as in bridge wind induced vibration control, in tower wind induced vibration control, in building wind induced vibration control, such as in main tower wind induced vibration control.
Compared with the prior art, the beneficial effects of the invention can comprise at least one of the following:
(1) the connecting beam column has simple structure and low manufacturing cost.
(2) The connecting beam column can properly control the strength and rigidity of the whole structure, and reduce the structure and acceleration response.
(3) The connecting beam column has excellent anti-seismic performance and can realize staged energy consumption.
(4) The invention utilizes the multi-stage yield characteristic and the self-resetting member, has convenient component replacement and strong self-resetting capability of the connecting beam column, and can reduce the residual deformation after the earthquake, thereby avoiding or reducing the repair work and cost after the earthquake.
Drawings
The above and other objects and features of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings, in which:
FIG. 1 shows a schematic structural view of a staged yielding self-resetting tie-beam column of the present invention;
FIG. 2 shows a schematic front view of the staged yielding self-resetting tie-beam column of the present invention;
FIG. 3 shows an exploded view of the staged yielding self-resetting tie-beam column of the present invention;
FIG. 4 shows a schematic view of a second connector of the present invention;
FIG. 5 shows a schematic view of the energy consuming self-resetting assembly of the present invention;
FIG. 6 shows an exploded view of the energy dissipating self-resetting assembly of the present invention;
fig. 7 shows a schematic cross-sectional view of the energy consuming self-resetting assembly of the present invention;
FIG. 8 shows a small deformation schematic of the staged yielding self-resetting tie-beam column of the present invention;
fig. 9 shows a schematic diagram of a large deformation of the staged yielding self-resetting tie-beam column of the present invention.
Description of the main reference numerals:
1-a first column, 11-a first stiffening rib, 12-a hinged support;
i-shear wall module, 2-shear wall, 21-slit, 22-second stiffening rib, 23-restraint plate;
3-a co-operating member, 31-a third stiffener;
II-energy-consuming self-resetting module, 41-first beam, 42-second beam, 43-energy-consuming self-resetting assembly, 431-central rod, 432-sleeve, 4321-limiting piece, 433-first end plate, 434-second end plate, 435-self-resetting piece, 436-limiting piston piece, 437-fixing plate, 438-converting piece;
5-a second cylinder;
61-first connector, 62-second connector, 63-third connector, 64-fourth connector, 65-fifth connector;
71-first connecting plate, 72-second connecting plate, 721-oblong hole, 73-third connecting plate, 74-fourth connecting plate, 75-fifth connecting plate, 76-sixth connecting plate, 77-seventh connecting plate and 78-eighth connecting plate.
Detailed Description
Hereinafter, the staged yielding self-resetting coupling beam column and the staged energy consumption method according to the present invention will be described in detail with reference to the accompanying drawings and exemplary embodiments.
It should be noted that "first," "second," "third," and the like are merely for convenience of description and for ease of distinction, and are not to be construed as indicating or implying relative importance. "upper," "lower," "front," "rear," "left," "right," "inner," "outer," and "outer" are merely for convenience of description and to constitute relative orientations or positional relationships, and do not indicate or imply that the referenced components must have that particular orientation or position.
The present exemplary embodiment provides a staged yielding self-resetting tie beam column. The multi-stage yield characteristic of the coupling beam is realized by arranging members (energy-consuming self-resetting components and shear walls) with different yield strengths, stop structures (a first cross beam, a first connecting plate and a second connecting plate) and the like, and under the action of horizontal load, the energy-consuming self-resetting module is activated first within a certain deformation range (the interlayer displacement angle is less than 1%, such as 0.9%, 0.7%, 0.5% and the like), wherein the energy-consuming self-resetting components consume energy under stress; with the increase of deformation (the interlayer displacement angle is 1% -2%, such as 1.1%, 1.5%, 1.9% and the like), the connecting piece (such as a pin bolt) is in contact and abutting contact with the long round hole of the connecting plate connected with the second column body, the deformation of the end, close to the second column body, of the energy consumption self-reset module is limited, the end, close to the cooperative module, of the energy consumption self-reset module continuously deforms in cooperation with the shear wall module, the shear deformation of the slotted steel plate shear wall yields energy consumption, and the performance of staged energy consumption is achieved. And a construction with self-resetting capability (a second connecting piece and a power consumption self-resetting assembly) is arranged in the connecting beam to provide the self-resetting capability so as to reduce residual deformation.
As shown in fig. 1, the coupling beam column may include: the shear wall comprises a first column body 1, a shear wall module I, a cooperation module, an energy consumption self-resetting module II and a second column body 5 which are connected in sequence.
Both the first column 1 and the second column 5 may be vertically disposed with a certain interval therebetween. Both the first column 1 and the second column 5 may be i-steel.
The shear wall module I can comprise at least 1 shear wall, for example, 3, 4, etc., and for example, two shear walls arranged from top to bottom as shown in FIG. 2. The shear wall may be a slotted steel plate shear wall.
The cooperative module and the shear wall can be elastically connected. The cooperative module can comprise at least 1 cooperative piece, such as two cooperative pieces 3 arranged from top to bottom as shown in fig. 1, the cooperative piece 3 can also be an I-shaped steel, and the cooperative piece can be structurally connected with the shear wall module I and the energy dissipation self-resetting module II, and can transmit horizontal loads of the two modules and coordinate the stressed deformation of the two modules. The number of the cooperative members 3 may be the same as the number of the shear walls 2, and the cooperative members 3 are in one-to-one correspondence with the shear walls 2, and each cooperative member 3 is elastically connected to the corresponding shear wall 2, but the present invention is not limited thereto, and the number of the cooperative members 3 may be different from that of the shear walls 2, and any number correspondence relationship that can realize horizontal load transfer is within the protection scope of the present invention, for example, one shear wall 2 corresponds to two cooperative members 3.
The power consuming self-resetting module ii may comprise at least one power consuming self-resetting unit, such as the two power consuming self-resetting units comprised in fig. 1. The energy-consuming self-resetting units are the same as the cooperative pieces in number and correspond to one another. Of course, the present invention is not limited thereto, and the number of the energy consuming self-resetting units and the number of the cooperating pieces may be different, for example, one cooperating piece corresponds to two energy consuming self-resetting units. The energy-consuming self-resetting unit can comprise at least one first cross beam, at least one second cross beam and at least one energy-consuming self-resetting component; for example, as shown in fig. 1, 1 energy consuming self-resetting unit may include 2 first beams 41, 2 second beams 42, and 2 energy consuming self-resetting assemblies 43. The first cross member 41 can limit the relative deformation between the second column 5 and the cooperative module within a predetermined range. The two ends of the second cross beam 42 are hinged with the cooperative piece 3 and the second column body 5 respectively, and the two ends of the second cross beam 42 are hinged and connected, only axial load is transferred, and the axial load and the first cross beam share the axial load to be coordinated and deformed. Two ends of the energy-consuming self-resetting component 43 are respectively hinged with the second cylinder 5 and the cooperative component 3, and the energy-consuming self-resetting component can gradually recover to an initial state without residual deformation by arranging the self-resetting component with a super-elastic effect, so that the energy-consuming self-resetting component has good self-resetting capability.
In this embodiment, the first column may be an i-beam, and the body of the first column may be provided with at least 1 first stiffening rib 11 as shown in fig. 2, for example, 2 to 10 first stiffening ribs, which may be determined according to the actual situation. The bottom of the first column may also be provided with an articulated support 12 for connection to the ground or other mechanism.
Likewise, the second column may also be provided with the first stiffening ribs and the articulated supports described above.
In this embodiment, the first and second columns may be identical in shape and structure.
In this embodiment, the shear wall may be a slotted steel plate shear wall, as shown in fig. 2, a plurality of slits 21, for example, horizontal slits, may be formed in the shear wall, and the number of the slits may be a plurality, for example, 2 to 30, and may be determined according to actual situations. The horizontal slit is formed in the steel plate shear wall, so that the steel plate can be prevented from out-of-plane buckling on one hand, the steel plate can be subjected to yielding energy consumption in the plane through bending shearing on the other hand, strength and rigidity decoupling is realized on the other hand, and designers can conveniently adjust and design.
The shear wall may also be provided with a second stiffener 22, such as a steel plate stiffener, as shown in FIG. 2.
The upper end and the lower end of the shear wall are respectively provided with a restraint plate 23 shown in fig. 2, and the restraint plates 23 can restrain the out-of-plane degree of freedom of the shear wall to prevent the shear wall from buckling out of the plane.
In the present embodiment, the shear wall and the first column are fixedly connected, for example, by the first connecting member 61 shown in fig. 2 and 3, and the first connecting member 61 may be a bolt, for example, a high-strength bolt.
In this embodiment, the cooperating member may be an i-steel, and the body portion of the cooperating member may be provided with at least 1 third stiffening rib 31 shown in fig. 2, for example, 2 to 8 third stiffening ribs, which may be determined according to the actual situation.
In this embodiment, the shear wall and the cooperating member are elastically connected, for example, by the second connecting member 62 shown in fig. 2 and 3, the second connecting member 62 may be a connecting member with elastic expansion and contraction performance, and may include a first disc spring, a second disc spring and a high-strength screw, the first disc spring and the second disc spring are respectively connected to two ends of the high-strength screw, for example, the structure shown in fig. 4, wherein (a) is a schematic view, and (b) is a front view.
In the present embodiment, as shown in fig. 3, the first end of the first beam 41 is fixedly connected to the cooperating member, for example, by welding. The second end of the first cross beam 41 and the second column 5 can also be connected through a first connecting plate assembly and a third connecting piece 63. The first connecting plate assembly may include a plurality of first connecting plates 71 and a plurality of second connecting plates 72 as shown in fig. 3, and the first connecting plates 71 are formed with circular holes and are fixedly connected to the second ends of the first cross members 41. The second connecting plate 72 is provided with a long round hole 721 and is fixedly connected with the second column body 5; lubricating oil can be dripped into the long round holes 721 to reduce friction; as shown in fig. 3, the oblong hole 721 has a longitudinal dimension greater than a transverse dimension. The first connecting plate 71 and the second connecting plate 72 may be connected by a third connecting member 63, the third connecting member 63 may include a pin, a bolt, etc., and the diameter of the third connecting member 63 may be smaller than the diameter of the circular hole of the first connecting plate 71 and the diameter of the long circular hole 721 of the second connecting plate 72.
Further, both the first connecting plate 71 and the second connecting plate 72 may be ear plates, but the present invention is not limited thereto, and any other plate material capable of realizing fixed connection may be used.
Further, the circular hole of the first connecting plate 71 and the oblong hole 721 of the second connecting plate 72 may be coaxial, and the axis may be perpendicular to the axis of the first cross member 41 and the axis of the second cylinder 5.
Further, the number of the first connection plates 71 may be 1, and the number of the second connection plates 72 may be 2. 2 second connecting plates 72 are fixed on the second column body, and the two long circular holes 721 face each other; when in connection, the first connecting plate 71 can be located between the 2 second connecting plates 72, the round hole on the first connecting plate 71 is communicated with the two oblong holes 721, and the third connecting piece 63 can penetrate through the round hole on the first connecting plate 71 and the oblong holes on the 2 second connecting plates 72 to realize connection. Of course, the present invention is not limited thereto, and the number of the first connection plates 71 may be 2, and the number of the second connection plates 72 may be 1, in a similar manner as above.
The first connection plate 71 may be fixedly connected to the first cross member 41 by welding or the like, and may be a structure of the first cross member 41 itself. Similarly, the second connecting plate 72 may be fixed to the second column 5 by welding or the like, or may have a structure of the second column 5 itself.
In this embodiment, two ends of the second beam are respectively hinged with the cooperating piece and the second column body.
The first end of the second cross member 42 and the cooperating member 3 may be connected by a second tie plate assembly and a fourth connecting member 64. The second connecting plate assembly may include a plurality of third connecting plates 73 and a plurality of fourth connecting plates 74 as shown in fig. 3, the third connecting plates 73 are formed with circular holes and are fixedly connected to the cooperating members 3, and the fourth connecting plates 74 are formed with circular holes and are fixedly connected to the first ends of the second cross beams 42. The fourth connecting member 64 may include a pin, a bolt, etc., and the diameter of the fourth connecting member 64 may be smaller than the diameter of the circular holes of the third connecting plate 73 and the fourth connecting plate 74.
Further, both the third connecting plate 73 and the fourth connecting plate 74 may be ear plates, but the present invention is not limited thereto, and may be any other plate material capable of realizing fixed connection.
Further, the circular hole on the third connecting plate 73 and the circular hole on the fourth connecting plate 74 may be coaxial, and the axes may be perpendicular to the axis of the second beam 42 and the axis of the second column 5.
Further, the number of the third connecting plates 73 may be 1, and the number of the fourth connecting plates 74 may be 2. 2 fourth connecting plates 74 are fixed on the first end face of the second cross beam 42, and the two circular holes face each other; when connected, the third connecting plate 73 can be located between 2 fourth connecting plates 74, the circular holes on the three connecting plates are communicated, and the third connecting piece 63 can penetrate through the three circular holes to realize connection. Of course, the present invention is not limited thereto, and the number of the third connecting plates 73 may be 2, and the number of the fourth connecting plates 74 may be 1, in a similar manner to the above.
The third connecting plate 73 may be fixedly connected to the cooperating member 3 by welding or the like, and may be a structure of the cooperating member 3 itself. Similarly, the fourth connecting plate 74 may be a member fixed to the second cross member 42 by welding or the like, or may be a structure of the second cross member 42 itself.
The second end of the second cross member 42 and the second column 5 may be connected by a third connecting plate assembly and a fifth connecting member 65. The third connecting plate assembly and the fifth connecting member 65 may have the same shape and structure as the second connecting plate assembly and the fourth connecting member 64, respectively, and the difference is that the arrangement positions are different, for example, the third connecting plate assembly may include a plurality of fifth connecting plates 75 and sixth connecting plates 76 as shown in fig. 3, the fifth connecting plates 75 may be fixedly connected to the second end of the second cross member 42, and the sixth connecting plates 76 may be fixedly connected to the second column 5. Further, both the fifth connecting plate 75 and the sixth connecting plate 76 may be ear plates, but the present invention is not limited thereto, and any other plate material capable of realizing fixed connection may be used.
In the present embodiment, as shown in fig. 1 and 2, 1 energy consuming self-resetting unit may include 2 energy consuming self-resetting components 43, and 2 energy consuming self-resetting components 43 may be arranged in a crossing manner.
In this embodiment, as shown in fig. 5, 6 and 7, the energy consuming self-resetting assembly may include: a center rod 431, a sleeve 432, a first end plate 433, a second end plate 434, a set of self-resetting elements, and a limit piston member 436. The self-resetting element group may include several self-resetting elements 435, e.g., 2, 3, 4, 6, 8, etc.
The end of the central rod 431 facing away from the sleeve 432 is further provided with a transition piece 438 and a seventh connecting plate 77. The conversion element 438 ensures the local stability of the component and effectively transfers the axial force applied to the central rod to the seventh connecting plate. The seventh connecting plate 77 may be hingedly connected to the second cylinder or the cooperating member. The seventh connecting plate 77 may be an ear plate, on which a through hole may be provided, and the second column or the cooperating member may be provided with a corresponding connecting plate (also may be an ear plate) with a through hole, and the seventh connecting plate 77 and the corresponding connecting plate may be connected by a connecting member, which may include a pin, a bolt, etc.
A limiting part 4321 is arranged on the inner wall of the sleeve 432, and the limiting part 4321 may be a limiting ring, and can limit the second end plate 434. A first end of the sleeve 432 faces away from the central rod 431 and a second end is fixedly connected to an end of the central rod 431.
The first end plate 433 is located outside the sleeve 432 and is capable of abutting a first end of the sleeve 432 under a pre-tensioning force from the resetting element. The center of the first end plate is provided with a through hole for the piston rod to pass through, and the through hole can be also provided with a guide ring.
A second end plate 434 is disposed in the sleeve 432 between the stop 4321 and the second end of the sleeve 432.
Self-restoring element 435 may be made of a shape memory alloy material, and by utilizing the super-elastic effect of the alloy, the internal crystals of the alloy undergo a martensitic reverse phase transformation after unloading, and can gradually return to the initial state, and the inelastic deformation disappears without residual deformation. The first end of the self-restoring element 435 may be fastened to the outward board surface of the first end plate 433 (i.e., the board surface facing away from the second end plate 434) by a first fixing element, and the second end may be fastened to the outward board surface of the second end plate 434 (i.e., the board surface facing away from the first end plate 433) by a second fixing element. The self-resetting element 435 may be a self-resetting rod, the left and right sides of the self-resetting element may be threaded sections, the first and second fixing members may be nuts adapted to the threaded sections, and the adjustment of the pre-tightening force of the self-resetting element 435 may be achieved by adjusting different positions of the nuts on the threaded sections. After the self-resetting assembly is assembled, self-resetting element 435 has two states, the first of which applies a pre-load to the adjusting nut; the other is that no pre-tightening force is applied when the nut is screwed on, and when the self-resetting component is deformed and energy is consumed, the self-resetting element 435 is stretched and has pre-tightening force.
The limiting piston member 436 includes a piston rod passing through the first end plate 433, and first and second piston plates disposed on the piston rod and located between the first and second end plates, the first piston plate being adjacent to the first end plate 433 and capable of being limited by the first end plate 433, and the second piston plate being adjacent to the second end plate 434 and capable of being limited by the second end plate 434. An eighth web 78 may also be attached to the outward facing end of the piston rod, and the eighth web 78 may be hingedly attached to a cooperating member or a second post. The eighth connecting plate 78 may be an ear plate, on which a through hole may be provided, and the cooperating member or the second column may be provided with a corresponding connecting plate (also may be an ear plate) with a through hole, and the eighth connecting plate 78 and the corresponding connecting plate may be connected by a connecting member, which may include a pin, a bolt, etc.
The seventh connecting plate 77 shown in fig. 5 may be connected to a cooperating member or a second cylinder. In the case where the seventh connecting plate 77 is connected to the cooperating member, the eighth connecting plate 78 may be connected to the second cylinder; in the case where the seventh connecting plate 77 is connected to the second cylinder, the eighth connecting plate 78 may be connected to the cooperating member.
The energy-consuming self-resetting assembly may further include a fixing plate 437, and two plate surfaces of the fixing plate 437 are fixedly connected to the second end of the sleeve 432 and one end of the center rod 431, respectively.
When the energy dissipation self-resetting component is pressed, the sleeve 432 and the limiting piston part 436 move oppositely, the first end plate 433 is in contact with and abuts against the sleeve 432, the limiting piston part 436 pushes the second end plate 434 to move axially, and the self-resetting component 435 is stretched to dissipate energy; when the energy dissipation self-resetting component is pulled, the sleeve 432 and the limiting piston member 436 move oppositely, the limiting ring of the sleeve 432 is in contact with and abuts against the second end plate 434, and the limiting piston plate 436 drives the first end plate 433 to move axially, so that the self-resetting component 435 is pulled to elongate and consume energy.
When the energy-consuming self-resetting component is restored to the initial position, due to the super-elastic effect of the shape memory alloy material, the internal crystal of the alloy generates martensite reverse phase transformation and can be gradually restored to the initial state without residual deformation. The self-resetting element 435 is in a long stretching state when the energy-consuming self-resetting element is tensioned and pressed, and the superelasticity of the shape memory alloy is fully exerted, so that good energy-consuming and self-resetting effects are realized.
For a better understanding of the above exemplary embodiments of the present invention, the phased energy consumption of the phased yielding self-resetting tie-beam column of the present invention is further explained below in conjunction with fig. 1, 3, 8 and 9. Wherein fig. 8 shows a small deformation schematic of the staged yielding self-resetting tie-beam column of the present invention. Fig. 9 shows a schematic diagram of a large deformation of the staged yielding self-resetting tie-beam column of the present invention.
The first beam 41 is connected to a first connecting plate 71 having a circular hole and a second connecting plate 72 having a circular hole on a second column body by a third connecting member 63 (e.g., a pin, a bolt, etc.). Under the action of horizontal load, the energy consumption self-resetting module II is activated at first, the energy consumption self-resetting component 43 deforms and consumes energy and can provide self-resetting capability, and the shear wall module I is not activated and still keeps elasticity, as shown in a small deformation schematic diagram of fig. 8. It should be noted that the second connecting member with elastic expansion and contraction performance of the present invention has a certain deformation capability, which can prevent the slit steel plate shear wall from yielding at this stage.
With the increase of the load, the deformation gradually increases, when the third connecting piece 63 abuts against the long circular hole 721 on the second connecting plate 72, the energy consumption self-resetting module II does not further deform, the shear wall module I generates shear deformation and yields energy consumption, and the slotted steel plate shear wall enters plastic energy consumption, as shown in a large deformation schematic diagram of fig. 9. Therefore, the aim of staged energy consumption of the coupling beam is fulfilled.
Although the present invention has been described above in connection with exemplary embodiments, it will be apparent to those skilled in the art that various modifications and changes may be made to the exemplary embodiments of the present invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A staged yielding self-resetting connector beam column, characterized in that the connector beam column comprises: the first column, the shear wall module, the cooperation module, the energy consumption self-resetting module and the second column are connected in sequence; wherein the content of the first and second substances,
the first column body and the second column body are arranged side by side;
the shear wall module comprises at least one shear wall fixedly connected with the first column body, and the plurality of shear walls are sequentially arranged from top to bottom under the condition that the number of the shear walls is multiple;
the cooperation module is elastically connected with the at least one shear wall fixedly connected with the first column body;
the energy-consuming self-resetting module comprises at least one energy-consuming self-resetting unit, the energy-consuming self-resetting units are sequentially arranged from top to bottom under the condition that the number of the energy-consuming self-resetting units is multiple, and each energy-consuming self-resetting unit comprises at least one first cross beam, at least one second cross beam and at least one energy-consuming self-resetting assembly; wherein the first beam limits the relative deformation between the second column and the cooperating module within a predetermined range; two ends of the second cross beam are hinged with the cooperation module and the second column body respectively; and two ends of the energy-consuming self-resetting assembly are respectively hinged with the second cylinder and the cooperative module, and the energy-consuming self-resetting assembly has self-resetting capability.
2. The staged yield self-resetting coupling beam column according to claim 1, wherein the cooperative module is connected with the at least one shear wall fixedly connected with the first column body through a plurality of elastic connecting pieces, and each elastic connecting piece comprises a first disc spring, a central screw rod and a second disc spring which are connected in sequence.
3. The staged yield self-resetting bridge girder according to claim 1, wherein the shear wall modules comprise slotted steel plate shear walls.
4. The phased yielding self-resetting tie beam column according to claim 1, wherein the collaboration module comprises at least one collaboration piece; the number of the shear walls and the number of the cooperative pieces are the same and the shear walls and the cooperative pieces can correspond to each other one by one; the number of the cooperative pieces is the same as that of the energy-consuming self-resetting units, and the cooperative pieces and the energy-consuming self-resetting units can correspond to each other one by one.
5. The staged yield self-resetting coupling beam column according to claim 1, wherein a first end of the first cross beam is fixedly connected with the cooperative module, a second end of the first cross beam is slidably connected with the second column, and the relative sliding direction of the second end of the first cross beam and the second column is the same as the axial direction of the second column.
6. The staged yielding self-resetting tie beam column of claim 5, further comprising a first connector plate assembly in a same number and one-to-one correspondence with the first cross beams, each first connector plate assembly enabling sliding connection of the second end of the corresponding first cross beam and the second column, the first connector plate assembly comprising a plurality of first connector plates and a plurality of second connector plates; wherein the content of the first and second substances,
the first connecting plates are provided with round holes and fixedly connected with the second ends of the first cross beams, and under the condition that the number of the first connecting plates is multiple, the multiple first connecting plates are oppositely arranged and the round holes are coaxial;
the second connecting plates are provided with oblong holes and are fixedly connected with the second cylinders, and under the condition that the number of the second connecting plates is multiple, the second connecting plates are oppositely arranged and the oblong holes are coaxial;
the first connecting plate is connected with the second connecting plate through a connecting piece.
7. The phased yielding self-resetting tie beam column according to claim 4, wherein the energy-consuming self-resetting assembly comprises: the self-resetting piston component comprises a central rod, a sleeve, a self-resetting component group, a first end plate, a second end plate and a limiting piston component; wherein the content of the first and second substances,
a limiting piece is arranged on the inner wall of the sleeve, the limiting piece can limit the second end plate, the first end of the sleeve deviates from the central rod, and the second end of the sleeve is fixedly connected with one end of the central rod;
the self-resetting element group comprises a plurality of self-resetting elements, the self-resetting elements are made of shape memory alloy materials, two ends of each self-resetting element are respectively buckled on the first end plate and the second end plate through fixing pieces, and the self-resetting element pretightening force can be adjusted by adjusting the fixing pieces;
the first end plate is positioned outside the sleeve and can abut against the first end of the sleeve; a second end plate disposed in the sleeve between the retainer piston member and the second end of the sleeve;
the limiting piston part comprises a piston rod, a first piston plate and a second piston plate, the first piston plate and the second piston plate are arranged on the piston rod, the piston rod penetrates through the first end plate, one end of the piston rod is hinged to the cooperation part, the first piston plate and the second piston plate are located between the first end plate and the second end plate, the first piston plate is adjacent to the first end plate and can be limited by the first end plate, and the second piston plate is adjacent to the second end plate and can be limited by the second end plate.
8. The staged yielding self-resetting coupling beam column according to claim 7, wherein the central rod and the sleeve are coaxial, and a transition piece and a connecting plate are further arranged at one end of the central rod, which is far away from the sleeve.
9. A staged energy consumption method, wherein the method comprises the step of adopting the staged yielding self-resetting coupling beam column as claimed in any one of claims 1 to 8 for seismic resistance and energy consumption.
10. Use of a staged yielding self-resetting tie beam column according to any one of claims 1 to 8 in wind induced vibration control.
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| CN104847033B (en) * | 2015-05-12 | 2017-05-24 | 东南大学 | Viscosity energy consumption self-reset shear wall structure with replaceable bottom |
| CN106592822B (en) * | 2016-11-10 | 2019-10-01 | 同济大学 | A kind of Self-resetting steel plate shear force wall based on super-elastic shape memory alloy screw rod |
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