CN113833340A - Multiple energy consumption damper with energy consumption time sequence and optimization design method thereof - Google Patents

Multiple energy consumption damper with energy consumption time sequence and optimization design method thereof Download PDF

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CN113833340A
CN113833340A CN202111190806.8A CN202111190806A CN113833340A CN 113833340 A CN113833340 A CN 113833340A CN 202111190806 A CN202111190806 A CN 202111190806A CN 113833340 A CN113833340 A CN 113833340A
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section steel
energy consumption
energy
damper
lining
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CN113833340B (en
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柯珂
王俊人
周绪红
王宇航
边菁
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Chongqing University
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Chongqing University
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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
    • E04H9/0237—Structural braces with damping devices
    • 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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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Structural Engineering (AREA)
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  • Vibration Prevention Devices (AREA)

Abstract

The invention provides a multiple energy consumption damper with an energy consumption time sequence, which is formed by mechanically connecting an outer sleeve section steel, an inner lining section steel, a connecting piece and a core tube by using a high-strength bolt. The invention also provides an optimal design method of the multiple energy consumption damper with the energy consumption time sequence.

Description

Multiple energy consumption damper with energy consumption time sequence and optimization design method thereof
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of dampers, in particular to a multiple energy consumption damper with an energy consumption time sequence and an optimization design method thereof.
[ background of the invention ]
The metal yielding damper is a damping energy dissipater made of mild steel or other soft metal materials in various forms. The metal has good hysteretic performance after yielding, and the elastic-plastic hysteretic deformation energy consumption of some metals is utilized, wherein the metals comprise a mild steel damper, a lead damper, a shape memory alloy damper and the like. The mechanism of vibration control on the structure is to dissipate partial energy of the structure vibration through yield hysteresis loss energy consumption of metal, so that the aim of reducing the structural reaction is fulfilled, and the mild steel damper fully utilizes the good hysteresis characteristic of mild steel after entering a plasticity stage. At present, the initial rigidity of a plurality of dampers is not large enough, the yield dispersion area of materials is not large enough, the design of an energy dissipation structure is not sufficient, the energy of the structure such as kinetic energy or elastic potential energy can not be fully converted into heat energy and the like to be dissipated, the integral rigidity of the building structure can be increased when the dampers are only normally used, but the requirements for reducing the earthquake reaction of the building structure can not be met by the dampers when a large earthquake occurs. Therefore, it is necessary to provide a multiple energy consumption damper with energy consumption sequence and an optimized design method thereof to solve the above problems.
[ summary of the invention ]
The invention discloses a multiple energy consumption damper with an energy consumption time sequence and an optimization design method thereof.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a multiple dissipative damper with dissipative timing, comprising:
the lining section steel surrounds a built-in space;
the outer sleeve section steel is arranged around the lining section steel in a surrounding mode and forms a gap with the lining section steel at intervals;
the connecting piece is arranged in the gap and is used for connecting the lining section steel and the outer sleeve section steel;
a core section of thick bamboo, accept in the built-in space, the axis of a core section of thick bamboo, inside lining shaped steel and overcoat shaped steel is located same straight line, a core section of thick bamboo includes:
a central shaft;
the two pistons are arranged at the two opposite ends of the central shaft, and the pistons are sleeved on the central shaft and can move along the central shaft;
the elastic piece is sleeved on the central shaft and arranged between the two pistons;
the fixing piece is sleeved on the outer circumference of the piston and is welded and fixed with the piston;
anchor clamps, set up in the clearance and with through the fix with screw between the mounting, run through on the inside lining shaped steel and be provided with and dodge the slotted hole of screw, the extending direction of slotted hole with the axis direction of a core section of thick bamboo is parallel, the screw can be followed the extending direction rectilinear motion of slotted hole, anchor clamps are close to one side of overcoat shaped steel is close to the sunken draw-in groove that is formed with of inside lining shaped steel direction, the connecting piece is close to one side of inside lining shaped steel is close to the protruding dowel plate that is formed with of inside lining shaped steel direction, the dowel plate corresponds the card and locates in the draw-in groove.
Preferably, inside lining shaped steel includes inside lining shaped steel and lower inside lining shaped steel, it is close to go up inside lining shaped steel the one end of inside lining shaped steel is provided with first flange down, lower inside lining shaped steel is close to the one end of going up inside lining shaped steel is provided with second flange, first flange with second flange passes through spring bolt fastening and forms an organic whole.
Preferably, a first end bearing platform protrudes from the outer surface of the lining section steel towards the direction close to the outer sleeve section steel, a second end bearing platform protrudes from the inner surface of the outer sleeve section steel towards the direction close to the lining section steel, one end of the connecting piece is fixed with the first end bearing platform, the other end of the connecting piece is fixed with the second end bearing platform, the connecting piece is connected with the second end bearing platform through a high-strength bolt, a screw rod of the high-strength bolt sequentially penetrates through the outer sleeve section steel, the second end bearing platform and the connecting piece to realize the fixation of the outer sleeve section steel, and the head of the high-strength bolt is exposed out of the outer sleeve section steel.
Preferably, the connecting piece with the one side protrusion of second end bearing platform contact is formed with first sand grip, second end bearing platform with the one side protrusion of connecting piece contact is formed with the second sand grip, first sand grip with the second sand grip is crisscross to be set up and the cooperation forms the friction pair.
Preferably, the connecting piece is a plate body made of a shape memory alloy material.
Preferably, the elastic member is a disc spring made of shape memory alloy.
Preferably, the core cylinder is of a split structure and comprises an upper core cylinder and a lower core cylinder, wherein the upper core cylinder comprises an upper central shaft, an upper piston, an upper elastic part and an upper fixing part; the lower core barrel comprises a lower central shaft, a lower piston, a lower elastic part and a lower fixing part; the upper central shaft comprises an upper shaft body and an upper limiting plate arranged at one end of the upper shaft body; the lower central shaft comprises a lower shaft body and a lower limiting plate arranged at one end of the lower shaft body, the upper shaft body and the lower shaft body are located on the same straight line, the upper limiting plate and the lower limiting plate are fixed, the upper elastic element is clamped between the upper piston and the upper limiting plate, the lower elastic element is clamped between the lower piston and the lower limiting plate, the upper limiting plate and the lower limiting plate are fixed, the upper fixing piece and the upper piston are fixed, and the lower fixing piece and the lower piston are fixed.
Preferably, the number of the clamps is even, the clamps comprise a first clamp and a second clamp, the first clamp and the second clamp respectively account for half of the total number of the clamps, and the first clamp is fixed with the upper fixing piece through the screw; the second clamp is fixed with the lower fixing piece through the screw, the two first clamps form a group, and the two first clamps in the group are symmetrically arranged around the central axis of the lining section steel; two the second anchor clamps form a set of, two in a set of the second anchor clamps are about the axis symmetry setting of inside lining shaped steel, the biography power board with anchor clamps one-to-one, the biography power board includes first biography power board and second biography power board, wherein first biography power board with first anchor clamps are connected, the second biography power board with the second anchor clamps are connected.
The invention also provides an optimal design method of the multiple energy consumption damper with the energy consumption time sequence, which comprises the following steps:
s1, establishing a finite element model of the multiple energy consumption damper with the energy consumption time sequence, and carrying out modal analysis on the finite element model to obtain the elastic vibration characteristic of a first-order mode, wherein the elastic vibration characteristic comprises a period T, an effective mass M, a vibration mode participation coefficient gamma and a vibration mode vector gamma
Figure BDA0003301101510000034
；
S2: performing hysteresis push-cover analysis on the finite element model based on the lateral force distribution of the elastic vibration characteristic of the first-order mode to obtain hysteresis parameters of the model, wherein the hysteresis parameters comprise a first stiffness ratio alpha after yielding1Second stiffness ratio after yield alpha2The energy consumption coefficient beta and the self-reset threshold xi;
s3: according to an energy balance principle, establishing an equivalent single-degree-of-freedom model for the finite element model, and acquiring an energy consumption capacity curve of the equivalent single-degree-of-freedom model; the energy consumption capacity of the equivalent single-degree-of-freedom model is obtained by the sum of the absorption energy of each floor of the finite element model under the lateral force by an incremental method, and the formula is as follows:
Figure BDA0003301101510000031
Figure BDA0003301101510000032
Wi＝Wi-1+ΔWi
wherein F is the lateral force distribution vector of the finite element model, m is the mass matrix of the finite element model,
Figure BDA0003301101510000033
the mode shape vector, Δ W, of the first-order mode of the finite element modeliThe work done by the i-th step external load under the action of lateral force, WiIs the total amount of the step i;
s4: and calculating the displacement of the equivalent single-degree-of-freedom model based on energy by using an incremental method, wherein the formula is as follows:
Figure BDA0003301101510000041
Figure BDA0003301101510000042
Figure BDA0003301101510000043
in the formula (I), the compound is shown in the specification,
Figure BDA0003301101510000044
the displacement increment based on energy in the ith step of the equivalent single-degree-of-freedom model,
Figure BDA0003301101510000045
is the total amount of displacement of the ith step,
Figure BDA0003301101510000046
a base shear for the structure;
s5: selecting earthquake motion records meeting the site requirements according to earthquake-resistant design specifications, and obtaining an energy coefficient gamma and a peak acceleration M of an equivalent single-degree-of-freedom model of the structure under the action of earthquake motionaDetermining an energy demand curve of the finite element model by using the definition of the energy coefficient, wherein the calculation formula is as follows:
Figure BDA0003301101510000047
wherein, WdEnergy requirement for finite element model, SvIs the pseudo velocity of the finite element model;
s6: drawing the energy consumption capacity curve and the energy demand curve of the finite element model in the same coordinate system to obtain an intersection point A, and comparing the abscissa x of the point AAAnd the magnitude of the self-reset threshold xi, if the abscissa of AxAIf the self reset threshold value xi is smaller than the self reset threshold value xi, the step S7 is executed; if the abscissa x of AAIf the self reset threshold value xi is larger than the self reset threshold value xi, the step S8 is executed;
s7: estimating the peak value interlayer displacement angle and the peak value acceleration response of each floor according to the first-order vibration mode vector, estimating the peak value interlayer displacement angle and the peak value acceleration response by combining the requirements of specifications and structural performance, and finishing optimization if the requirements are met; if not, go to step S8;
s8: adjusting performance parameters of the connecting piece to change the damping coefficient and the speed index of the multiple energy consumption damper with the energy consumption time sequence; modeling the multiple energy-consuming dampers with the energy-consuming time sequence after the configuration optimization again, and going to step S1.
Compared with the prior art, the multiple energy consumption damper with the energy consumption time sequence is formed by mechanically connecting the outer sleeve section steel, the lining section steel, the connecting piece and the core barrel through the high-strength bolt, and can absorb and dissipate more energy by utilizing the performance of the elastic piece in the connecting piece and the core barrel, so that the multiple energy consumption damper with the energy consumption time sequence has the self-resetting capability while having the energy consumption time sequence. The invention also provides an optimization design method of the multiple energy consumption damper with the energy consumption time sequence, which utilizes the capacity curve and the demand curve of the multiple energy consumption damper with the energy consumption time sequence to carry out optimization pertinently.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
fig. 1 is a schematic perspective view of a multiple energy-consuming damper with energy-consuming time sequence according to the present invention;
FIG. 2 is a cross-sectional view of the multiple dissipative damper with dissipative timing sequences shown in FIG. 1 along line A-A;
FIG. 3 is a schematic structural view of the jacket-type steel;
FIG. 4 is a schematic view of a half-section structure of upper and lower lining section steels;
FIG. 5 is an enlarged view of area B of FIG. 2;
FIG. 6 is an enlarged view of area C of FIG. 2;
FIG. 7 is an enlarged view of area D of FIG. 2;
FIG. 8 is a schematic structural diagram of the multiple energy-consuming damper with energy-consuming time sequence shown in FIG. 1 without the outer-casing steel;
fig. 9 is a schematic structural view of the core barrel.
Description of reference numerals:
1-lining profile steel, 10-gap, 1A-upper lining profile steel, 1B-lower lining profile steel, 11A-first connecting flange, 11B-second connecting flange, 11C-spring bolt, 12-first end support platform, 13-slotted hole, 2-jacket profile steel, 21-second end support platform, 3-connecting piece, 31-force transmission plate, 4-core cylinder, 41-center shaft, 42-piston, 43-elastic piece, 44-fixed piece, 4A-upper core cylinder, 4B-lower core cylinder, 41A-upper center shaft, 42A-upper piston, 43A-upper elastic piece, 44-upper fixed piece, 41B-lower center shaft, 42B-lower piston, 43B-lower elastic piece, 44B-lower fixed piece, 411A-upper shaft body, 412A-upper limiting plate, 411B-lower shaft body, 412B-lower limiting plate, 5-high-strength bolt, 6-clamp, 60-clamping groove, 6A-first clamp, 6B-second clamp, 7-screw and 8-spring bolt.
[ detailed description ] embodiments
The following description of the present invention is provided to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention and to make the above objects, features and advantages of the present invention more comprehensible.
Referring to fig. 1-9, the present invention provides a multiple energy consumption damper with energy consumption timing, which includes a lining section steel 1, a jacket section steel 2, a connecting member 3 and a core tube 4.
The lining section steel 1 encloses a built-in space, and the outer sleeve section steel 2 is annularly arranged around the lining section steel 1 and forms a gap 10 with the lining section steel. The shape of the lining section steel 1 may be a cylindrical, triangular prism, quadrangular prism or other polygonal column-shaped structure, and the shape of the outer casing section steel 2 may be a cylindrical, triangular prism, quadrangular prism or other polygonal column-shaped structure, which are combined arbitrarily for nesting, and this embodiment does not limit this. Specifically, in this embodiment, the lining section steel 1 and the jacket section steel 2 are both rectangular tubular structures, and four side walls of the lining section steel 1 and four side walls of the jacket section steel 2 are parallel to each other in a one-to-one correspondence manner.
Inside lining shaped steel 1 includes inside lining shaped steel 1A and inside lining shaped steel 1B down, it forms an organic whole with the concatenation of inside lining shaped steel 1B down to go up inside lining shaped steel 1A. Specifically, go up inside lining shaped steel 1A and be close to the one end of inside lining shaped steel 1B is provided with first flange 11A down, inside lining shaped steel 1B is close to down the one end of going up inside lining shaped steel 1A is provided with second flange 11B, first flange 11A with second flange 11B passes through spring bolt 11C fastening and forms integratively. The lining section steel 1 is arranged to be of a split structure, and can be conveniently installed and detached on a construction site.
The connecting piece 3 is arranged in the gap 10 and is connected with the lining section steel 1 and the outer sleeve section steel 2. Furthermore, a first end bearing platform 12 is protruded from the outer surface of the lining section steel 1 towards the direction close to the outer sleeve section steel 2, a second end bearing platform 21 is protruded from the inner surface of the outer sleeve section steel 2 towards the direction close to the lining section steel 1, one end of the connecting piece 3 is fixed with the first end bearing platform 12, and the other end of the connecting piece is fixed with the second end bearing platform 21. First end bearing platform 12 set up, can make connecting piece 3 with 1 surface interval of inside lining shaped steel, second end bearing platform 21's setting can make connecting piece 3 with the internal surface interval of overcoat shaped steel 2 avoids connecting piece 3 with inside lining shaped steel 1 and the contact of overcoat shaped steel 3 influence connecting piece 3 deformation. The connecting piece 3 and the first end bearing platform 12 are fixed by bolts, and can be conveniently installed and detached. The first end support platform 12 may be disposed on the upper lining section steel 1A or the lower lining section steel 1B, which is not limited in this embodiment.
Further, connecting piece 3 with the one side protrusion of second end support platform 21 contact is formed with first sand grip, second end support platform 21 with the one side protrusion of connecting piece 3 contact is formed with the second sand grip, first sand grip with the second sand grip is crisscross to be set up and the cooperation forms the friction pair. The friction effect of the friction pair can play a role in energy consumption. The connecting piece 3 is connected with the second end bearing platform 21 through the high-strength bolt 5, a screw rod of the high-strength bolt 5 sequentially penetrates through the outer sleeve type steel 1, the second end bearing platform 21 and the connecting piece 3 to fix the outer sleeve type steel 1, the head of the high-strength bolt 5 is exposed out of the outer sleeve type steel 1, and the high-strength bolt 5 can be conveniently screwed in the installation process.
Preferably, the connecting member 3 may be an elastic structure, and the elasticity of the connecting member 3 may be utilized to dissipate energy. In the present embodiment, the connecting member 3 is a plate made of a shape memory alloy material, and has elasticity and self-resetting capability. The number of the connecting pieces 3 is four, and one connecting piece 3 is arranged at each side wall of the lining section steel 1.
The core barrel 4 is accommodated in the built-in space, and the central axes of the core barrel 4, the lining section steel 1 and the outer sleeve section steel 2 are positioned on the same straight line.
The core barrel 4 includes a central shaft 41, a piston 42, an elastic member 43, and a fixing member 44.
The number of the pistons 42 is two, the two pistons 42 are disposed at two opposite ends of the central shaft 41, and the pistons 42 are sleeved on the central shaft 41 and can move along the central shaft 41. The piston 42 is connected to an external load.
The elastic element 43 is sleeved on the central shaft 41 and disposed between the two pistons 42. Preferably, the elastic member 43 is a disc spring made of a shape memory alloy.
In the present embodiment, the core cylinder 4 is provided as a split structure, which includes an upper core cylinder 4A and a lower core cylinder 4B, wherein the upper core cylinder 4A includes an upper central shaft 41A, an upper piston 42A, an upper elastic member 43A, and an upper fixing member 44A; the lower core tube 4B includes a lower center shaft 41B, a lower piston 42B, a lower elastic member 43B, and a lower fixing member 44B. The upper central shaft 41A includes an upper shaft body 411A and an upper limiting plate 412A disposed at one end of the upper shaft body 411A; the lower central shaft 41B includes a lower shaft 411B and a lower limiting plate 412B disposed at one end of the lower shaft 411B. The central axes of the upper shaft body 411A and the lower shaft body 411B are located on the same straight line, and the upper limiting plate 412A and the lower limiting plate 412B are fixed. The upper elastic member 43A is interposed between the upper piston 42A and the upper limiting plate 412A, and the lower elastic member 43B is interposed between the lower piston 42B and the lower limiting plate 412B. The fixing members 44 are sleeved on the outer circumference of the piston 42 and are welded and fixed with the piston 42, and the fixing members 44 are arranged in one-to-one correspondence with the piston 42. In the present embodiment, the upper fixing member 44A is fixed to the upper piston 42A, and the lower fixing member 44B is fixed to the lower piston 42B.
Further, the multiple energy-consuming damper with the energy-consuming time sequence further comprises a clamp 6, the clamp 6 is arranged in the gap 10 and fixed with the fixing piece 44 through a screw 7, an oblong hole 13 avoiding the screw 7 is formed in the lining section steel 1 in a penetrating mode, the extending direction of the oblong hole 13 is parallel to the central axis direction of the core cylinder 4, and the screw 7 can linearly move along the extending direction of the oblong hole 13.
Anchor clamps 6 are close to the one side of overcoat shaped steel 2 is to being close to the sunken draw-in groove 60 that is formed with of inside lining shaped steel 1 direction, connecting piece 3 is close to inside lining shaped steel 1 one side is to being close to inside lining shaped steel 1 direction protrusion is formed with biography power board 31, biography power board 31 corresponds the card and locates in the draw-in groove 60, draw-in groove 60 can be right biography power board 31 forms spacingly, simultaneously biography power board 31 with the cooperation structure of draw-in groove 60 can also play the biography power effect, passes through power through anchor clamps 6 conduct extremely on the core section of thick bamboo 4, through the elastic action of elastic component 43 consumes energy in the core section of thick bamboo 4, elastic component 43 adopts shape memory alloy material to make, when possessing elasticity, still possesses from the reset ability.
Further, the number of the jigs 6 is an even number, and the jigs include a first jig 6A and a second jig 6B, and each of the first jig 6A and the second jig 6B occupies half of the total number of the jigs 6. The first clamp 6A is fixed to the upper fixing member 44A by the screw 7; the second clamp 6B is fixed to the lower fixing member 44B by the screw 7.
The two first clamps 6A form a group, and the two first clamps 6A in the group are symmetrically arranged about the central axis of the lining section steel 1; the two second clamps 6B form a group, and the two second clamps 6B in the group are symmetrically arranged about the central axis of the lining steel 1.
Dowel steel 3 with anchor clamps 6 one-to-one, dowel steel 3 includes first dowel steel 3A and second dowel steel 3B, wherein first dowel steel 3A with first anchor clamps 6A are connected, second dowel steel 3B with second anchor clamps 6B are connected.
In this embodiment, for the purpose of more clearly explaining the contents of the present invention, the four side walls of the upper lining section steel 1A and the lower lining section steel 1B are respectively defined as a first side wall, a second side wall, a third side wall and a fourth side wall in the clockwise direction, the first side wall, the second side wall, the third side wall and the fourth side wall are sequentially connected end to end, the first side wall and the third side wall are parallel, and the second side wall and the fourth side wall are parallel. The first clamp 6A is arranged on the outer surfaces of the first side wall and the third side wall of the upper lining section steel 1A, and the second clamp 6B is arranged on the outer surfaces of the second side wall and the fourth side wall of the lower lining section steel 1B. This arrangement allows the connecting elements 3A at the location of the first and third side walls to transmit forces to the upper elastic element 43A and the connecting elements 3B at the location of the second and fourth side walls to transmit forces to the lower elastic element 43B, whereby the resulting forces are all attributed to the core barrel 4, with the core barrel 4 taking on the main energy-consuming role. Two connecting pieces 3A located at the positions of the first side wall and the third side wall are symmetrically arranged, so that the stress balance of the two sides in the direction can be ensured, and two connecting pieces 3B located at the positions of the second side wall and the fourth side wall are symmetrically arranged, so that the stress balance of the two sides in the direction can be ensured.
Specifically, the installation process of the multiple energy consumption damper with the energy consumption time sequence provided by the invention is as follows:
(1) the upper elastic element 43A and the upper piston 42A are sleeved on the upper central shaft 41A in sequence to complete the assembly of the upper core tube 4A; the lower elastic piece 43B and the lower piston 42B are sequentially sleeved on the lower central shaft 41B to complete the assembly of the upper core tube 4B; aligning and fixing the upper limit plate 412A and the lower limit plate 412B to complete the assembly of the core barrel 4;
(2) fixing the upper lining section steel 1A and the lower lining section steel 1B through spring bolts 8;
(3) fixing the connecting member 3 to the first end support platform 12, then installing the clamp 6 so that the clamping groove 60 is aligned with the dowel plate 31, and then fixing the clamp 6 and the fixing member 44 together by the screw 7;
(4) sleeving the outer sleeve section steel 1 on the periphery of the inner lining section steel 1, and then fixing the connecting piece 3 and the second end support platform 21; and finally, connecting the two ends of the upper lining section steel 1A and the lower lining section steel 1B with the main body component respectively to finish the installation.
The use principle of the multiple energy consumption damper with the energy consumption time sequence provided by the invention is as follows:
the main body component is connected with the lining section steel 1, the pulling force is transmitted to the lining section steel 1, the force is transmitted to the outer sleeve section steel 2 through the force transmission effect of the connecting piece 3, the outer sleeve section steel 1 is pressed, and the friction side effect of the connecting piece 3 and the second end bearing platform 21 consumes energy for the first time through friction; when the tensile force is increased, the connecting piece 3 deforms to generate secondary energy consumption, at the moment, the force transmission plate 31 can drive the clamp to generate displacement, the screw 7 is driven to generate displacement in the long round hole 12, the piston 43 is driven to generate displacement along the central shaft 41, the piston 43 can drive the elastic piece 42 to synchronously generate movement through movement, and the third energy consumption is generated through the elastic action of the elastic piece 42. The third energy consumption is sequential, more energy can be absorbed and dissipated, and the connecting piece 3 and the elastic piece 42 are both made of shape memory alloy and have self-resetting capability.
The invention also provides an optimal design method of the multiple energy consumption damper with the energy consumption time sequence, which comprises the following steps:
s1, establishing a finite element model of the multiple energy consumption damper with the energy consumption time sequence, and carrying out modal analysis on the finite element model to obtain the elastic vibration characteristic of a first-order mode, wherein the elastic vibration characteristic comprises a period T, an effective mass M, a vibration mode participation coefficient gamma and a vibration mode vector gamma
Figure BDA0003301101510000094
；
S2: performing hysteresis push-cover analysis on the finite element model based on the lateral force distribution of the elastic vibration characteristic of the first-order mode to obtain hysteresis parameters of the model, wherein the hysteresis parameters comprise a first stiffness ratio alpha after yielding1Second stiffness ratio after yield alpha2The energy consumption coefficient beta and the self-reset threshold xi;
s3: according to an energy balance principle, establishing an equivalent single-degree-of-freedom model for the finite element model, and acquiring an energy consumption capacity curve of the equivalent single-degree-of-freedom model; the energy consumption capacity of the equivalent single-degree-of-freedom model is obtained by the sum of the absorption energy of each floor of the finite element model under the lateral force by an incremental method, and the formula is as follows:
Figure BDA0003301101510000091
Figure BDA0003301101510000092
Wi＝Wi-1+ΔWi
wherein F is the lateral force distribution vector of the finite element model, m is the mass matrix of the finite element model,
Figure BDA0003301101510000093
the mode shape vector, Δ W, of the first-order mode of the finite element modeliThe work done by the i-th step external load under the action of lateral force, WiIs the total amount of the step i;
s4: and calculating the displacement of the equivalent single-degree-of-freedom model based on energy by using an incremental method, wherein the formula is as follows:
Figure BDA0003301101510000101
Figure BDA0003301101510000102
Figure BDA0003301101510000103
in the formula (I), the compound is shown in the specification,
Figure BDA0003301101510000104
the displacement increment based on energy in the ith step of the equivalent single-degree-of-freedom model,
Figure BDA0003301101510000105
is the total amount of displacement of the ith step,
Figure BDA0003301101510000106
a base shear for the structure;
s5: selecting earthquake motion records meeting the site requirements according to earthquake-resistant design specifications, and obtaining an energy coefficient gamma and a peak acceleration M of an equivalent single-degree-of-freedom model of the structure under the action of earthquake motionaDetermining an energy demand curve of the finite element model by using the definition of the energy coefficient, wherein the calculation formula is as follows:
Figure BDA0003301101510000107
wherein, WdEnergy requirement for finite element model, SvIs the pseudo velocity of the finite element model;
s6: drawing the energy consumption capacity curve and the energy demand curve of the finite element model in the same coordinate system to obtain an intersection point A, and comparing the abscissa x of the point AAAnd the magnitude of the self-reset threshold xi, if X is the abscissa of AAIf the self reset threshold value xi is smaller than the self reset threshold value xi, the step S7 is executed; if the abscissa x of AAIf the self reset threshold value xi is larger than the self reset threshold value xi, the step S8 is executed;
s7: estimating the peak value interlayer displacement angle and the peak value acceleration response of each floor according to the first-order vibration mode vector, estimating the peak value interlayer displacement angle and the peak value acceleration response by combining the requirements of specifications and structural performance, and finishing optimization if the requirements are met; if not, go to step S8;
s8: adjusting performance parameters of the connecting piece to change the damping coefficient and the speed index of the multiple energy consumption damper with the energy consumption time sequence; modeling the multiple energy-consuming dampers with the energy-consuming time sequence after the configuration optimization again, and going to step S1.
Compared with the prior art, the multiple energy consumption damper with the energy consumption time sequence is formed by mechanically connecting the outer sleeve section steel, the lining section steel, the connecting piece and the core barrel through the high-strength bolt, and can absorb and dissipate more energy by utilizing the performance of the elastic piece in the connecting piece and the core barrel, so that the multiple energy consumption damper with the energy consumption time sequence has the self-resetting capability while having the energy consumption time sequence. The invention also provides an optimization design method of the multiple energy consumption damper with the energy consumption time sequence, which utilizes the capacity curve and the demand curve of the multiple energy consumption damper with the energy consumption time sequence to carry out optimization pertinently.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. Various changes, modifications, substitutions and alterations to these embodiments will occur to those skilled in the art without departing from the spirit and scope of the present invention.

Claims (10)

1. A multiple dissipative damper with dissipative timing, comprising:
the lining section steel surrounds a built-in space;
the outer sleeve section steel is arranged around the lining section steel in a surrounding mode and forms a gap with the lining section steel at intervals;
the connecting piece is arranged in the gap and is used for connecting the lining section steel and the outer sleeve section steel;
a core barrel housed in the built-in space, the core barrel including:
a central shaft;
the two pistons are arranged at the two opposite ends of the central shaft, and the pistons are sleeved on the central shaft and can move along the central shaft;
the elastic piece is sleeved on the central shaft and arranged between the two pistons;
the fixing piece is sleeved on the outer circumference of the piston and is welded and fixed with the piston;
anchor clamps, set up in the clearance and with through the fix with screw between the mounting, run through on the inside lining shaped steel and be provided with and dodge the slotted hole of screw, the extending direction of slotted hole with the axis direction of a core section of thick bamboo is parallel, the screw can be followed the extending direction rectilinear motion of slotted hole, anchor clamps are close to one side of overcoat shaped steel is close to the sunken draw-in groove that is formed with of inside lining shaped steel direction, the connecting piece is close to one side of inside lining shaped steel is close to the protruding dowel plate that is formed with of inside lining shaped steel direction, the dowel plate corresponds the card and locates in the draw-in groove.
2. The multiple energy consumption damper with energy consumption timing sequence according to claim 1, wherein the central axes of the core tube, the lining section steel and the outer sleeve section steel are positioned on the same straight line.
3. The multiple energy consumption damper with energy consumption timing sequence according to claim 1, wherein the lining section steel comprises an upper lining section steel and a lower lining section steel, one end of the upper lining section steel close to the lower lining section steel is provided with a first connecting flange, one end of the lower lining section steel close to the upper lining section steel is provided with a second connecting flange, and the first connecting flange and the second connecting flange are fastened into a whole through spring bolts.
4. The multiple energy consumption damper with energy consumption timing sequence according to claim 3, wherein a first end bearing platform protrudes from the outer surface of the lining section steel in a direction close to the outer sleeve section steel, a second end bearing platform protrudes from the inner surface of the outer sleeve section steel in a direction close to the lining section steel, one end of the connecting piece is fixed with the first end bearing platform, the other end of the connecting piece is fixed with the second end bearing platform, the connecting piece and the second end bearing platform are connected through a high-strength bolt, a screw rod of the high-strength bolt sequentially penetrates through the outer sleeve section steel, the second end bearing platform and the connecting piece to fix the outer sleeve section steel, and a head of the high-strength bolt is exposed out of the outer sleeve section steel.
5. The multiple energy consumption damper with energy consumption timing sequence of claim 4, wherein a first protruding strip is formed on one surface of the connecting member contacting the second end support platform in a protruding manner, a second protruding strip is formed on one surface of the second end support platform contacting the connecting member in a protruding manner, and the first protruding strip and the second protruding strip are arranged in a staggered manner and cooperate to form a friction pair.
6. The multiple energy consuming damper with energy consuming timing sequence of claim 1, wherein the connecting member is a plate made of shape memory alloy material.
7. The multiple dissipative damper with dissipative timing according to claim 1, wherein the resilient member is a disc spring made of shape memory alloy.
8. The multiple dissipative damper with dissipative timing as claimed in claim 1, wherein said core cylinder is provided in a split configuration comprising an upper core cylinder and a lower core cylinder, wherein said upper core cylinder comprises an upper central shaft, an upper piston, an upper elastic member and an upper fixed member; the lower core barrel comprises a lower central shaft, a lower piston, a lower elastic part and a lower fixing part; the upper central shaft comprises an upper shaft body and an upper limiting plate arranged at one end of the upper shaft body; the lower central shaft comprises a lower shaft body and a lower limiting plate arranged at one end of the lower shaft body, the upper shaft body and the lower shaft body are located on the same straight line, the upper limiting plate and the lower limiting plate are fixed, the upper elastic element is clamped between the upper piston and the upper limiting plate, the lower elastic element is clamped between the lower piston and the lower limiting plate, the upper limiting plate and the lower limiting plate are fixed, the upper fixing piece and the upper piston are fixed, and the lower fixing piece and the lower piston are fixed.
9. The multiple dissipative damper with dissipative timing according to claim 8, wherein the number of the clamps is an even number, and comprises a first clamp and a second clamp, each of the first clamp and the second clamp occupies half of the total number of the clamps, and the first clamp is fixed to the upper fixing member by the screw; the second clamp is fixed with the lower fixing piece through the screw, the two first clamps form a group, and the two first clamps in the group are symmetrically arranged around the central axis of the lining section steel; two the second anchor clamps form a set of, two in a set of the second anchor clamps are about the axis symmetry setting of inside lining shaped steel, the biography power board with anchor clamps one-to-one, the biography power board includes first biography power board and second biography power board, wherein first biography power board with first anchor clamps are connected, the second biography power board with the second anchor clamps are connected.
10. A method for optimizing design of multiple energy consuming dampers with energy consuming time sequence according to any of claims 1-9, comprising the steps of:
s1 constructionEstablishing a finite element model of the multi-energy-consumption damper with an energy consumption time sequence, and carrying out modal analysis on the finite element model to obtain the elastic vibration characteristic of a first-order modal, wherein the elastic vibration characteristic comprises a period T, an effective mass M, a vibration mode participation coefficient gamma and a vibration mode vector gamma
Figure FDA0003301101500000021
S2: performing hysteresis push-cover analysis on the finite element model based on the lateral force distribution of the elastic vibration characteristic of the first-order mode to obtain hysteresis parameters of the model, wherein the hysteresis parameters comprise a first stiffness ratio alpha after yielding1Second stiffness ratio after yield alpha2The energy consumption coefficient beta and the self-reset threshold xi;
s3: according to an energy balance principle, establishing an equivalent single-degree-of-freedom model for the finite element model, and acquiring an energy consumption capacity curve of the equivalent single-degree-of-freedom model; the energy consumption capacity of the equivalent single-degree-of-freedom model is obtained by the sum of the absorption energy of each floor of the finite element model under the lateral force by an incremental method, and the formula is as follows:
Figure FDA0003301101500000031
Figure FDA0003301101500000032
Wi＝Wi-1+ΔWi
wherein F is the lateral force distribution vector of the finite element model, m is the mass matrix of the finite element model,
Figure FDA0003301101500000033
the mode shape vector, Δ W, of the first-order mode of the finite element modeliThe work done by the i-th step external load under the action of lateral force, WiIs the total amount of the step i;
s4: and calculating the displacement of the equivalent single-degree-of-freedom model based on energy by using an incremental method, wherein the formula is as follows:
Figure FDA0003301101500000034
Figure FDA0003301101500000035
Figure FDA0003301101500000036
in the formula,. DELTA.xe iFor the ith step of the equivalent single-degree-of-freedom model, the displacement increment, x, based on energye iIs the total displacement of the ith step, Vb iA base shear for the structure;
s5: selecting earthquake motion records meeting the site requirements according to earthquake-resistant design specifications, and obtaining an energy coefficient gamma and a peak acceleration M of an equivalent single-degree-of-freedom model of the structure under the action of earthquake motionaDetermining an energy demand curve of the finite element model by using the definition of the energy coefficient, wherein the calculation formula is as follows:
Figure FDA0003301101500000037
wherein, WdEnergy requirement for finite element model, SvIs the pseudo velocity of the finite element model;
s6: drawing the energy consumption capacity curve and the energy demand curve of the finite element model in the same coordinate system to obtain an intersection point A, and comparing the abscissa x of the point AAAnd the magnitude of the self-reset threshold xi, if X is the abscissa of AAIf the self reset threshold value xi is smaller than the self reset threshold value xi, the step S7 is executed; if the abscissa x of AAIf the self reset threshold value xi is larger than the self reset threshold value xi, the step S8 is executed;
s7: estimating the peak value interlayer displacement angle and the peak value acceleration response of each floor according to the first-order vibration mode vector, estimating the peak value interlayer displacement angle and the peak value acceleration response by combining the requirements of specifications and structural performance, and finishing optimization if the requirements are met; if not, go to step S8;
s8: adjusting performance parameters of the connecting piece to change the damping coefficient and the speed index of the multiple energy consumption damper with the energy consumption time sequence; modeling the multiple energy-consuming dampers with the energy-consuming time sequence after the configuration optimization again, and going to step S1.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108952291A (en) * 2018-10-10 2018-12-07 中南大学 A kind of novel steel bar metallic damper

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CN101525909A (en) * 2009-03-25 2009-09-09 广东省建筑科学研究院 Hinged two-channel steel flexible restricting support
CN110761431A (en) * 2019-10-29 2020-02-07 北京交通大学 Combined shock-absorbing damper with self-resetting function
KR102164349B1 (en) * 2020-06-11 2020-10-12 (주)성건엔지니어링 Aseismatic Reinforcement Structure using Spring Damper
CN213926837U (en) * 2020-09-21 2021-08-10 重庆大学 Variable friction force and multi-stage energy consumption based damper and beam column node

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Publication number Priority date Publication date Assignee Title
CN101525909A (en) * 2009-03-25 2009-09-09 广东省建筑科学研究院 Hinged two-channel steel flexible restricting support
CN110761431A (en) * 2019-10-29 2020-02-07 北京交通大学 Combined shock-absorbing damper with self-resetting function
KR102164349B1 (en) * 2020-06-11 2020-10-12 (주)성건엔지니어링 Aseismatic Reinforcement Structure using Spring Damper
CN213926837U (en) * 2020-09-21 2021-08-10 重庆大学 Variable friction force and multi-stage energy consumption based damper and beam column node

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108952291A (en) * 2018-10-10 2018-12-07 中南大学 A kind of novel steel bar metallic damper

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