CN109457831B - Shape memory alloy stranded wire supporting shock absorber - Google Patents

Shape memory alloy stranded wire supporting shock absorber Download PDF

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Publication number
CN109457831B
CN109457831B CN201811394294.5A CN201811394294A CN109457831B CN 109457831 B CN109457831 B CN 109457831B CN 201811394294 A CN201811394294 A CN 201811394294A CN 109457831 B CN109457831 B CN 109457831B
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steel
steel plate
plate
plates
memory alloy
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CN109457831A (en
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崔迪
王圳颖
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Dalian University
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Dalian 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways

Abstract

The shape memory alloy stranded wire supporting shock absorber belongs to the field of earthquake resistance of building engineering structures, and aims to solve the problem that the shock absorber can be reset after the shock absorber is weakened by the influence of transverse vibration in the earthquake, and the shock absorber comprises an upper steel plate, a lower steel plate, an L-shaped connecting steel plate, a steel block, stranded wires and a stranded wire connecting device; the L-shaped steel plates comprise vertical plates and transverse plates which are mutually and vertically connected, the L-shaped steel plates are arranged between the upper steel plate and the lower steel plate, and the two L-shaped steel plates are oppositely arranged; the vertical plate of L-shaped steel plate and last steel plate between by L-shaped connecting plate fixed connection, the effect is that have better performance of can resetting by oneself after the shake, and its simple structure, it is convenient to dismantle, easy to maintain and shake after restoration.

Description

Shape memory alloy stranded wire supporting shock absorber
Technical Field
The invention belongs to the field of earthquake resistance of building engineering structures, and relates to a supporting shock absorber.
Background
The traditional civil engineering structural supports are mainly: the support forms of eccentric support, energy-consuming coupling support, energy-consuming frame support and the like are that most supports consume earthquake energy mainly through deformation, so that the purpose of reducing the effect brought by the earthquake is achieved. Because the structural members have the characteristics of elastoplasticity, the energy-consuming supports inevitably suffer from some damage and deformation, which is unfavorable for the dissipation of energy and has an influence on the stability of the building.
The energy consumption and shock absorption technology mainly comprises the following steps: by adding the passive energy dissipation device in the original structure, the earthquake energy consumed by the structural member is consumed, and the deformation and damage to the structure caused by the vibration effect are greatly relieved. The energy consumers developed at present mainly comprise: viscous energy dissipaters, viscoelastic energy dissipaters, metal energy dissipaters and friction energy dissipaters, wherein the first two types are referred to as speed-dependent energy dissipaters, the second two types are collectively referred to as hysteresis energy dissipaters, and the metal energy dissipaters are further divided into lead dampers and mild steel dampers. The hysteresis-type energy dissipater consumes energy by deformation and hysteresis, and the speed-dependent energy dissipater obtains damping force by utilizing the speed-dependent viscosity resistance effect from small amplitude to large amplitude.
Disclosure of Invention
In order to solve the problem of weakening the influence of transverse vibration in earthquake and resetting the shock absorber after the earthquake, the invention provides the following technical scheme: a shape memory alloy stranded wire supporting shock absorber comprises an upper steel plate, a lower steel plate, an L-shaped connecting steel plate, steel blocks, stranded wires and a stranded wire connecting device; the L-shaped steel plates comprise vertical plates and transverse plates which are mutually and vertically connected, the L-shaped steel plates are arranged between the upper steel plate and the lower steel plate, and the two L-shaped steel plates are oppositely arranged; the vertical plate of the L-shaped steel plate is fixedly connected with the upper steel plate through an L-shaped connecting plate; a partition is arranged between transverse plates of the two L-shaped steel plates which are oppositely arranged, steel blocks are arranged and filled in the partition, and the vertical height of the steel blocks is larger than that of the transverse plates; the transverse plate of L-shaped steel plate offsets with lower steel plate, and the transverse plate bottom plane is parallel and level with the bottom plane of steel shot, and the steel shot is by its bottom plane and lower steel plate fixed connection, the steel shot in the part of vertical surpassing the transverse plate, open a plurality of through-holes along vertical range in its side, the riser of two relative L-shaped steel plates, at the relative installation stranded conductor connecting device of longitudinal corresponding position, the stranded conductor runs through each through-hole, two end connection of stranded conductor are at two stranded conductor connecting device that correspond the position is relative, the stranded conductor be shape memory alloy stranded conductor.
Further, the first limiting plate is vertically arranged between the upper steel plate and the steel block, the top plane of the steel block is fixedly connected with the lower surface of the first limiting plate, the upper surface of the first limiting plate is propped against the upper steel plate, the first limiting plate is transversely arranged between the vertical plates of the two opposite L-shaped steel plates, and the two opposite lateral sides of the first limiting plate are propped against the corresponding vertical plates;
further, a through groove is formed in the lateral side face of the steel block, the second limiting plate penetrates through the through groove, the second limiting plate is located at the portion, outside the through groove, of the steel block, and the lower surface of the second limiting plate is fixedly connected with the upper surfaces of the two opposite transverse plates.
Further, the through grooves are longitudinally arranged on the lateral side face, and the through grooves are correspondingly provided with more than two second limiting plates.
Further, the twisted wire connecting devices which are arranged at the corresponding longitudinal positions on the vertical plate are distributed in a straight line, and the twisted wire connecting devices are multiple and have consistent spacing.
Further, a plurality of through holes which are arranged along the longitudinal direction and are formed on the lateral side surface of the steel block are distributed in a straight line, and the through holes are provided with a plurality of through holes, and the distance between the adjacent through holes is consistent.
Further, the stranded wire connecting device comprises a vertical groove or hole and a bolt, wherein the vertical groove or hole and the bolt are formed in the vertical plate, a threaded hole is formed in the upper edge or the lower edge of the groove or hole, the bolt is incompletely anchored in the groove or hole, and the portion of the bolt exposed out of the threaded hole is used as the stranded wire connecting device for connecting the stranded wires.
Further, the stranded wire connecting device comprises a vertical hole and a bolt, wherein the vertical hole and the bolt are formed in the vertical plate, a threaded hole is formed in the upper edge or the lower edge of the hole, the bolt is incompletely anchored in the threaded hole, and the portion of the bolt exposed out of the threaded hole is used as the stranded wire connecting device for connecting the stranded wire.
Furthermore, the vertical plate and the upper steel plate of the L-shaped steel plate are fixedly connected through an L-shaped connecting plate, the L-shaped connecting steel plate is formed by two vertical fixed steel plates, one steel plate is welded on the L-shaped steel plate, and the other steel plate is anchored on the upper steel plate through bolts and nuts.
Further, a polytetrafluoroethylene sliding plate is embedded between the first limiting plate and the upper steel plate, and/or a polytetrafluoroethylene sliding plate is embedded between the first limiting plate and the L-shaped steel plate, and/or a polytetrafluoroethylene sliding plate is embedded between the L-shaped steel plate and the lower steel plate.
The beneficial effects are that: the shape memory alloy stranded wire supporting shock absorber overcomes the defects of the traditional support, has good hysteresis curve under earthquake load, and has excellent performances of supporting and energy consumption and shock absorption. The shape memory alloy has superelasticity, high damping, corrosion resistance and memory effect. In earthquake, the steel block is limited by the transverse plate of the L-shaped steel plate, and the shape memory alloy stranded wire penetrates through the steel block, so that horizontal vibration can be consumed by the shape memory alloy stranded wire and influenced by restoring force of the horizontal vibration, the earthquake has good self-resetting performance after earthquake, and the earthquake is simple in structure, convenient to detach, easy to maintain and easy to repair after earthquake.
Drawings
FIG. 1-1 is a side view of a shape memory alloy stranded wire shock absorber;
FIGS. 1-2 are front elevational views of an interior of a shape memory alloy stranded wire shock absorber;
FIGS. 1-3 are schematic views of reserved holes of L-shaped steel plates;
FIGS. 1-4 are top views of the interior of a shock absorber;
FIG. 2-1 is a side view of a support;
FIG. 2-2 is a cross-shaped long steel strip groove core;
FIGS. 2-3 are side views of a cross-shaped long steel strip groove core;
FIGS. 2-4 show the combination of steel plates with screw holes and round steel pipes;
FIGS. 2-5 are side views of a tailored steel sheet set with screw holes;
FIGS. 2-6 are interior top views of the device;
FIG. 3-1 is a top view of a shock mount;
FIG. 3-2 is a perspective view of a shock isolation mount;
fig. 3-3 are schematic views of rectangular steel plates;
FIGS. 3-4 are schematic views of upper connecting steel plates;
FIG. 4-1 is an assembly effect diagram of a shock isolation mount;
FIG. 4-2 is a right side view of the shock mount;
FIG. 4-3 illustrates a connection of the shape memory alloy strands in the upper half;
fig. 5-1 is an overall schematic view of an energy dissipating shock mount.
FIG. 6-1 is an azimuth illustration;
wherein:
1-1 parts of upper steel plates, 1-2 parts of lower steel plates, 1-3 parts of L-shaped connecting steel plates, 1-4.L parts of steel plates, 1-5 parts of first limiting plates, 1-6 parts of steel blocks, 1-7 parts of stranded wires of annular shape memory alloy, 1-8 parts of second limiting plates and 1-9 parts of bolts.
2-1 parts of bolts, 2-2 parts of upper steel plates, 2-3 parts of steel plate groups, 2-4 parts of steel bars, 2-5 parts of cross long steel belt groove inner cores, 2-6 parts of steel pipes and 2-7 parts of springs.
3-1 of an outer cylinder, 3-2 of an inner cylinder, 3-3 of an annular shape memory alloy spring, 3-4 of a rectangular steel plate, 3-5 of a round steel plate, 3-6 of a limiting plate, 3-7 of an opening, 3-8 of a steel plate wall, 3-9 of a transverse bolt hole of the steel plate wall, 3-10 of a vertical rod and 3-11 of a transverse bolt hole of the vertical rod.
4-1, 4-2, shape memory alloy stranded wires, 4-3, hydraulic cylinder, 4-4, second connecting steel plate, 4-5, third connecting steel plate, 4-6, shape memory alloy spring, 4-7, steel nut, 4-8, steel bolt, 4-9, limiting plate, 4-10, connecting rod, 4-11, steel cylinder, 4-12, steel plate, 4-13.
5-1 parts of shape memory alloy springs, 5-2 parts of long steel arms, 5-3 parts of outer sleeves, 5-4 parts of short steel arms, 5-5 parts of upper cross arms, 5-6 parts of lower cross arms, 5-7 parts of first horizontal walls, 5-8 parts of second horizontal walls, 5-9 parts of first long steel walls, 5-10 parts of second long steel walls, 5-11 parts of first short steel walls and 5-12 parts of second short steel walls; a. connection points a, b, connection point b, c, connection point c, d, connection point d, e.
Detailed Description
Example 1: 1-1 and 1-2, a shape memory alloy stranded wire shock absorber comprises a steel plate, an L-shaped steel plate 1-4, an L-shaped connecting steel plate 1-3, a first limiting plate 1-5, a second limiting plate 1-8, a steel block 1-6 of a cuboid reserved hole and hole groove, a polytetrafluoroethylene sliding plate and a shape memory alloy stranded wire 1-7. The steel plates and the L-shaped steel plates 1-4 are connected by the L-shaped connecting steel plates 1-3, and the L-shaped connecting steel plates 1-3 are welded on the L-shaped steel plates 1-4 and are anchored on the upper steel plates 1-1 by bolts and nuts to form a first steel plate group. One side of each steel block 1-6 of the rectangular reserved hole and the hole groove is welded with the steel plate, the other side is welded with the limiting plate, and the limiting plate with the corresponding size is inserted into the reserved hole groove to form a second steel plate group. The method for installing the shape memory alloy stranded wire supporting shock absorber overcomes the defects of the traditional support, has good hysteresis curve under earthquake load, and has the excellent performances of supporting and energy consumption and shock absorption. The shape memory alloy has superelasticity, high damping, corrosion resistance and memory effect. In earthquake, the steel block is limited by the transverse plate of the L-shaped steel plate, and the shape memory alloy stranded wire penetrates through the steel block, so that horizontal vibration can be consumed by the shape memory alloy stranded wire and influenced by restoring force of the horizontal vibration, the earthquake has good self-resetting performance after earthquake, and the earthquake is simple in structure, convenient to detach, easy to maintain and easy to repair after earthquake.
The L-shaped steel plate 1-4 is provided with a hole, threads are arranged below the hole, bolts can be anchored, the bolts in the hole are fixed on the L-shaped steel plate 1-4, and the L-shaped steel plate has the function of hooking, and can fixedly connect the stranded wires 1-7 on the L-shaped steel plate, so that the stranded wires 1-7 are fixed by the L-shaped steel plate 1-4. The shape memory alloy stranded wire 1-7 is an annular stranded wire 1-7, two ends of the annular stranded wire are respectively sleeved on a bolt of a steel plate, the stranded wire 1-7 is connected and ends of the stranded wire 1-7 are fixed on the L-shaped steel plate 1-4, so that the stranded wire 1-7 is fastened, the shape memory alloy stranded wire is a stranded wire connecting device, the middle of the stranded wire 1-7 penetrates through a cuboid reserved hole, for horizontal vibration, the steel block 1-6 slides, the steel block 1-6 consumes energy, however, the steel block 1-6 is limited by a transverse plate of the L-shaped steel plate 1-4 and is also limited by the stranded wire 1-7, particularly the stranded wire 1-7 is the stranded wire 1-7 of the shape memory alloy, the stranded wire 1-7 has better restoring force, the steel block 1-7 consumes energy under the synergistic effect of the two limiting and restoring, and the restoring force formed by the stranded wire 1-7 is also used to restore the steel block 1-6, so that the service life of the shock absorber is prolonged, and on the other hand, the energy consumption of the steel block 1-6 is more compact and the shock absorber is easy to combine with other structures.
And a polytetrafluoroethylene sliding plate is embedded between the limiting plate and the steel plates in the first steel plate group, a polytetrafluoroethylene sliding plate is also embedded between the limiting plate and the L-shaped steel plates 1-4, and a polytetrafluoroethylene sliding plate is also embedded between the L-shaped steel plates 1-4 and the steel plates in the second steel plate group. The polytetrafluoroethylene sliding plate can reduce the friction coefficient between the steel plates, so that the steel plates can slide relatively.
The L-shaped steel plate 1-4 is connected with the steel plate by bolts, and the shape memory alloy stranded wire 1-7 is anchored, so that the steel plate is easy to disassemble and maintain. Because the annular shape memory alloy strands 1-7 pass through the reserved holes, the shape memory alloy strands 1-7 can be prevented from being intertwined. And because the shock absorber is simple in structure and convenient to detach, the shock absorber is easy to maintain daily and repair after earthquake.
The specific scheme is as follows: 1-1 and 1-2, a shape memory alloy stranded wire supporting shock absorber comprises an upper steel plate 1-1, a lower steel plate 1-2, an L-shaped steel plate 1-4, an L-shaped connecting steel plate 1-3, a steel block 1-6, stranded wires 1-7 and a stranded wire connecting device; the L-shaped steel plates 1-4 comprise vertical plates and transverse plates which are mutually and vertically connected, the L-shaped steel plates 1-4 are arranged between the upper steel plate 1-2 and the lower steel plate 1-2, and the two L-shaped steel plates 1-4 are oppositely arranged; the vertical plates of the L-shaped steel plates 1-4 are fixedly connected with the upper steel plate 1-1 through L-shaped connecting plates; a partition is arranged between transverse plates of two L-shaped steel plates 1-4 which are oppositely arranged, steel blocks 1-6 are arranged and filled in the partition, and the vertical height of the steel blocks 1-6 is larger than that of the transverse plates; the transverse plate of the L-shaped steel plate 1-4 is propped against the lower steel plate 1-2, the bottom plane of the transverse plate is flush with the bottom plane of the steel block 1-6, the steel block 1-6 is fixedly connected with the lower steel plate 1-2 through the bottom plane of the steel block, a plurality of through holes which are longitudinally arranged are formed in the side surface of the steel block 1-6 and extend out of the transverse plate, two opposite vertical plates of the L-shaped steel plate are oppositely provided with stranded wire connecting devices at the corresponding longitudinal positions, stranded wires 1-7 penetrate through the through holes, two end parts of the stranded wires 1-7 are connected with the two stranded wire connecting devices which are opposite at the corresponding positions, and the stranded wires 1-7 are shape memory alloy stranded wires 1-7.
Further, the first limiting plate 1-5 is vertically arranged between the upper steel plate 1-1 and the steel block 1-6, the top plane of the steel block 1-6 is fixedly connected with the lower surface of the first limiting plate 1-5, the upper surface of the first limiting plate 1-5 is propped against the upper steel plate 1-1, the first limiting plate 1-5 is transversely arranged between the vertical plates of the two opposite L-shaped steel plates 1-4, and the two opposite lateral sides of the first limiting plate 1-5 are propped against the corresponding vertical plates;
further, a through groove is formed in the lateral side face of the steel block 1-6, the second limiting plate 1-8 penetrates through the through groove, the second limiting plate 1-8 is located at the portion, outside the through groove, of the steel block 1-6, and the lower surface of the second limiting plate is fixedly connected with the upper surfaces of the two opposite transverse plates.
Further, the through grooves are longitudinally arranged on the lateral side face, and are correspondingly provided with more than two second limiting plates 1-8.
Further, as shown in fig. 1-4, the twisted wire connecting devices are arranged at corresponding positions on the vertical plate in the longitudinal direction and are distributed in a straight line, and the intervals between the adjacent twisted wire connecting devices are consistent.
Further, a plurality of through holes which are arranged along the longitudinal direction and are arranged on the lateral side surface of the steel block 1-6 are distributed in a straight line, and the distance between the adjacent through holes is consistent.
Further, as shown in fig. 1-3, the stranded wire connecting device comprises a vertical groove or hole and a bolt 9, wherein the vertical groove or hole is formed in the vertical plate, a threaded hole is formed in the upper edge or the lower edge of the groove or hole, the bolt is incompletely anchored in the groove or hole, and a bolt part exposing the threaded hole is used as the stranded wire connecting device for connecting stranded wires 1-7.
Further, the stranded wire connecting device comprises a vertical hole and a bolt, wherein the vertical hole and the bolt are formed in the vertical plate, a threaded hole is formed in the upper edge or the lower edge of the hole, the bolt is incompletely anchored in the threaded hole, and the portion of the bolt exposed out of the threaded hole is used as the stranded wire connecting device for connecting stranded wires 1-7.
Furthermore, the vertical plates of the L-shaped steel plates 1-4 are fixedly connected with the upper steel plate 1-1 through an L-shaped connecting plate, the L-shaped connecting steel plates 1-3 are formed by two vertical fixed steel plates, one steel plate is welded on the L-shaped steel plate 1-4, and the other steel plate is anchored on the upper steel plate 1-1 through bolts and nuts.
Further, a polytetrafluoroethylene sliding plate is embedded between the first limiting plate 1-5 and the upper steel plate 1-1, and/or a polytetrafluoroethylene sliding plate is embedded between the first limiting plate 1-5 and the L-shaped steel plate 1-4, and/or a polytetrafluoroethylene sliding plate is embedded between the L-shaped steel plate 1-4 and the lower steel plate 1-2.
A shape memory alloy stranded wire supporting and damping method comprises the steps of installing a shape memory alloy stranded wire supporting damper and damping and recovering.
Further, the mounting steps are as follows:
installing L-shaped steel plates, wherein the L-shaped steel plates comprise vertical plates and transverse plates which are mutually and vertically connected, the two L-shaped steel plates are arranged between an upper steel plate and a lower steel plate, and the two L-shaped steel plates are oppositely arranged; the vertical plate of the L-shaped steel plate is fixedly connected with the upper steel plate through an L-shaped connecting plate; the transverse plates of the two L-shaped steel plates are arranged oppositely, a separation is arranged between the transverse plates, and steel blocks are arranged in the separation;
installing a second steel plate group, wherein the steel block is provided with a reserved hole and a reserved hole groove, the reserved hole is a plurality of through holes which are formed in the lateral side face of the steel block and are longitudinally arranged, one side of the steel block is welded with the lower steel plate, the other side of the steel block is welded with the first limiting plate, and the reserved hole groove is also inserted with a corresponding second limiting plate to form the second steel plate group;
the method comprises the steps that a stranded wire of the annular shape memory alloy penetrates through a reserved hole, two ends of the stranded wire are respectively sleeved on corresponding bolts of a vertical plate of an L-shaped steel plate, the bolts are in threaded connection with the vertical plate, threaded holes are formed in the upper edge or the lower edge of the groove or the hole, the bolts are incompletely anchored, and the bolt parts exposed out of the threaded holes serve as connecting devices for connecting the stranded wires;
and installing a first steel plate group, wherein the upper steel plate and the L-shaped steel plate are connected through an L-shaped connecting steel plate, and the L-shaped connecting steel plate is anchored on the upper steel plate through bolts and nuts while being welded on the L-shaped steel plate to form the first steel plate group.
Further, the shock absorption recovery step: for the mounted shape memory alloy stranded wire supporting shock absorber, the first steel plate group and the second steel plate group slide relatively under the action of an earthquake in an inclined support, the shape memory alloy stranded wire is fixed on the L-shaped steel plate due to the reserved holes of the steel blocks penetrating through the second steel plate group, and when the shape memory alloy stranded wire slides relatively, the annular shape memory alloy stranded wire is pulled to achieve the energy consumption and shock absorption effects, and the restoring force enables the annular shape memory alloy stranded wire to reset automatically.
Example 2: as shown in fig. 2-1, the assembled buckling restrained brace adopts a shape memory alloy material, and the shape memory alloy has super elasticity, high damping, corrosion resistance and memory effect, so that the assembled buckling restrained brace can be automatically reset after an earthquake, and is easy to disassemble and easy to maintain and repair after the earthquake because of being assembled. The steel plate assembly comprises an upper steel plate 2-2 with screw holes, a shape memory alloy spring 2-7, a cross-shaped long steel belt groove inner core 2-5, a steel plate assembly 2-3 with screw holes, a round steel pipe 2-6, a rectangular steel bar 2-4 and a bolt 2-1.
Further, the steel plate group 2-3 with screw holes comprises a hollow rectangular body formed by a vertical plate and a bottom plate, the top end surface of the vertical plate is provided with screw holes, the steel plate group 2-3 also comprises a plurality of small U-shaped steel plate groups 2-3, and the plurality of small U-shaped steel plates are divided into two rows and welded on the large U-shaped steel in parallel. Furthermore, the upper and lower surfaces of the cross-shaped long steel belt groove inner cores 2-5 are embedded with polytetrafluoroethylene sliding plates so as to facilitate friction. And the shape memory alloy springs are arranged on the springs 2-7.
As shown in FIG. 2-4, the upper steel plate 2-2 with screw holes is connected with the round steel pipe 2-6 through rectangular steel bars 2-4 and bolts 2-1. As shown in fig. 2-1, two round steel pipes are just put into a small U-shaped steel plate in a steel plate group 2-3 with screw holes, grooves on two sides of a cross-shaped long steel belt groove inner core 2-5 are clamped on a round steel pipe 2-6, and a shape memory alloy spring 2-7 is arranged between the U-shaped steel plate and the round steel pipe 2-6 between the cross-shaped long steel belt groove inner cores 2-5. The upper steel plate 2-2 with screw holes is connected with the steel plate group 2-3 with screw holes through bolts 2-1.
The specific installation steps are as follows: firstly, a plurality of shape memory alloy springs 2-7 are placed on a round steel pipe 2-6, then the round steel pipe 2-6 and an upper steel plate 2-2 with screw holes are combined, then groove steel of a cross-shaped long steel belt groove inner core 2-5 is correspondingly clamped between the two shape memory alloy springs on the round steel pipe 2-6, then a steel plate group 2-3 with screw holes and the upper steel plate 2-2 with screw holes are connected by bolts 2-1, and two shape memory alloy springs 2-7 are placed between the two small U-shaped steel plates.
The invention relates to an assembled shape memory alloy buckling restrained brace, when an earthquake occurs, a cross-shaped inner core and an outer steel plate sleeve slide, a shape memory alloy spring is compressed to consume energy and absorb shock, and the earthquake can be reset by itself due to the memory effect of the shape memory alloy.
As shown in fig. 2-1, the assembled buckling restrained brace comprises a hollow rectangular steel plate group 2-3 formed by connecting a bottom plate and vertical plates at two sides of the bottom plate, and a cross-shaped long steel belt groove inner core 2-5; the steel plate comprises a bottom plate in the steel plate group 2-3, two groups of steel pipe 2-6 fixing devices are longitudinally arranged along the steel plate group 2-3, the steel pipe 2-6 fixing devices are fixed on the bottom plate, each group of steel pipe 2-6 fixing devices consists of a plurality of first rectangular blocks which are arranged at intervals, and the top surface of each first rectangular block is provided with a notch for fixing the steel pipe 2-6; as shown in fig. 2-2, the cross long steel strip groove inner core 2-5 comprises a rectangular inner core and arm block groups fixed on two longitudinal sides of the inner core, the inner core is longitudinally arranged along the steel plate group 2-3, the bottom surface of the inner core is propped against the bottom plate of the steel plate group 2-3, each arm block group consists of a plurality of second rectangular blocks which are arranged at intervals, two opposite longitudinal sides of each second rectangular block are fixedly connected with the inner core, one groove for fixing the steel pipe 2-6 is formed in one groove, the first rectangular block is positioned on two longitudinal sides of the inner core, one second rectangular block is arranged between every two adjacent first rectangular blocks, the steel pipe 2-6 is clamped by the first rectangular blocks from the lower side and clamped by the second rectangular blocks from the side, the steel pipe 2-6 between the adjacent first rectangular blocks and the second rectangular blocks is covered by the spring 2-7, and the spring 2-7 is limited by the adjacent two first rectangular blocks. The adjacent first rectangular blocks are not connected with the upper steel plate 2-2, the vertical plate and the inner core, and have gaps. The second rectangular block is not connected with the vertical plate and is provided with a gap, so that the inner core can generate torsion to consume energy, the torsion is consumed and reset by the spring 2-7, the spring 2-7 consumes energy, according to the view shown in the figure 2-6, the spring 2-7 is sleeved on the round steel pipe 2-6, the round steel pipe 2-6 is selected, the spring 2-7 moves smoothly along with the round shape, the energy consumption effect is good, in particular, the two springs 2-7 are placed between two adjacent first rectangular block steel plates, the two springs 2-7 are separated and limited by the second rectangular block between the two first rectangular steel blocks, when the second rectangular block moves left and right, the left and right movement of the spring 2-7 can be limited by the first rectangular block, so that the second rectangular block compresses the springs 2-7 at two sides to consume energy, in other words, the inner core moves left and right to drive the second rectangular block to move left and right, the second rectangular block moves left and compresses the first rectangular block 2-7, and the first rectangular block is limited by the first rectangular block 2-7 is fixed by the first rectangular block, and the first rectangular block is limited by the first rectangular block 2-7.
The steel pipe 2-6 is a round steel pipe 2-6. The end of the steel pipe 2-6 is connected with one end of a vertical steel bar 2-4, the other end of the vertical steel bar 2-4 is fixedly connected with an upper steel plate 2-2, the upper steel plate 2-2 is fixed on the top surface of the vertical plate, the steel pipe is limited at the end of the steel pipe in order to avoid excessive movement of the steel pipe, and the top surface of the inner core is propped against the upper steel plate 2-2. The upper steel plate 2-2 is connected with the vertical plate through bolts 2-1. The vertical steel bar 2-4 is connected with the upper steel plate 2-2 through a bolt 2-1. The first rectangular blocks of the two groups of fixing devices are oppositely corresponding and symmetrically arranged by taking the inner cores as symmetry axes, and the second rectangular blocks of the two groups of arm blocks are oppositely corresponding and symmetrically arranged by taking the inner cores as symmetry axes. The purpose of equidistant and symmetrical is to make the compression sharing be more even when moving, the energy consumption effect is better, and thereby make the resilience of memory alloy spring keep better, spring 2-7 be shape memory alloy spring 2-7, select memory alloy spring, the power consumption is better, and have resilience, the top surface and the bottom surface of inner core inlay the polytetrafluoroethylene slide. The first rectangular block and the second rectangular block are U-shaped steel plates or steel plates with other shapes and notches.
A method for assembling a buckling restrained brace of a shape memory alloy spring 2-7 comprises the steps of connecting a plurality of shape memory alloy springs 2-7 on the periphery of a round steel tube 2-6, fixedly connecting two round steel tubes 2-6 and an upper steel plate 2-2 through vertical steel bars 2-4, correspondingly clamping two first steel blocks on the round steel tubes 2-6 at the end parts of the two shape memory alloy springs 2-7, correspondingly clamping a second steel block of a cross-shaped long steel belt groove inner core 2-5 on the round steel tube 2-6 between the two shape memory alloy springs 2-7, and connecting a steel plate group 2-3 with the upper steel plate 2-2 through bolts 2-1.
The buckling restrained brace is formed by assembling the shape memory alloy spring buckling restrained brace by the assembling method, two springs 2-7 are placed between two adjacent first rectangular steel plates, the two springs 2-7 are separated and limited by a second rectangular steel block between the two first rectangular steel blocks, and when the second rectangular block moves left and right, the first rectangular blocks limit the left and right movement of the springs 2-7, so that the second rectangular blocks compress the springs 2-7 on two sides to consume energy.
A self-resetting method of an inner core of an anti-buckling support after earthquake is provided, wherein the inner core uses the energy consumption method of the anti-buckling support in the earthquake to consume energy, and the shape memory alloy springs 2-7 restore the initial shape to enable the inner core to self-reset.
According to the scheme, the springs are sleeved on the round steel pipes, round steel pipes are selected, the springs move smoothly along with the round steel pipes, the energy consumption effect is good, in particular, two springs are placed between two adjacent first rectangular block steel plates, the two springs are separated and limited by a second rectangular block between the two first rectangular block steel plates, when the second rectangular block moves left and right, the first rectangular block can limit the left and right movement of the springs, so that the springs on two sides are compressed by the second rectangular block to consume energy, in a simple way, the inner core moves left and right to drive the second rectangular block on the inner core to move left and right, the second rectangular block moves left and right to compress the springs between the first rectangular blocks, and the first rectangular block is fixed on the bottom plate, so that the springs are limited by the first rectangular block to consume energy. The invention is assembled, and most of the parts are connected by bolts, so that the assembly and disassembly are convenient and quick, and the assembly and disassembly are easy for daily maintenance and post-earthquake repair. The shape memory alloy spring is adopted to consume energy and absorb shock, and the shape memory alloy material has super elasticity, high damping, corrosion resistance and memory effect, so that the energy consumption can be efficiently carried out, the self-reset after the earthquake is carried out, and the service cycle is long.
Example 3: as shown in FIG. 3-1 and FIG. 3-2, the annular shape memory alloy spring omnibearing shock insulation support comprises a round outer cylinder, a round inner cylinder, a limiting plate 3-6, an annular shape memory alloy spring 3-3, a rectangular steel plate 3-4 and a round steel plate 3-5, wherein the round steel plate 3-5 is used as an upper connecting steel plate. The lower part of the annular shape memory alloy spring 3-3 omnibearing shock insulation support is composed of three inner and outer cylinders 3-1. An annular shape memory alloy spring 3-3 is arranged between the inner cylinder 3-1 and the outer cylinder 3-1, and a limiting plate 3-6 is arranged on the annular shape memory alloy spring to prevent the inner cylinder 3-1 from being separated. The polytetrafluoroethylene sliding plate is embedded on the upper surface of the bottom surface of the outer cylinder 3-1, so that the friction coefficient is reduced. The upper part of the shock insulation support is composed of a round steel plate and a rectangular steel plate which are connected through bolts and nuts, so that the shock insulation support can rotate, namely, the shock insulation support has a certain degree of freedom. The other end of the cuboid steel plate is connected with the lower inner cylinder 3-2 by bolts and nuts. The outer cylinder 3-1 is placed in a regular triangle shape, the inner cylinder 3-2 is placed in the outer cylinder 3-1, the annular shape memory alloy spring 3-3 is placed between the inner cylinder 3-2 and the outer cylinder 3-1, and the limiting plate 3-6 is anchored on the outer cylinder 3-1 by using bolts. The two ends of the cuboid steel plate are respectively connected with the inner cylinder 3-2 and the upper connecting plate by bolts and nuts.
When the earthquake action in the horizontal direction occurs, the inner cylinder 3-1 and the outer cylinder slide relatively, the annular shape memory alloy spring 3-3 is compressed, and energy consumption and shock absorption are achieved. When vertical earthquake action occurs, the inner cylinder 3-2 can be folded inwards to the center or expanded outwards, and the annular shape memory alloy spring 3-3 is compressed, so that energy consumption and shock absorption are achieved.
As shown in FIG. 3-1, the annular shape memory alloy spring omnibearing shock insulation support comprises an inner cylinder 3-2, an outer cylinder 3-1, an annular shape memory alloy spring 3-3, a rectangular steel plate 3-4 and a round steel plate 3-5, and naturally, the rectangular steel plate 3-4 is better in strength and stronger in tolerance, and plays a role of connecting the round steel plate 3-5 and the inner cylinder 3-2 in the scheme, namely, the circular steel plate 3-5 is a connecting plate, the round steel plate 3-5 is connected with a building and is connected with the inner cylinder 3-1 and the outer cylinder 3-1 through a connecting plate in combination, and the plate for connecting and supporting the shock insulation support can be used as the connecting plate and the supporting plate in the embodiment for a person skilled in the art.
Further, the inner cylinder 3-2 is nested inside the outer cylinder 3-1, the lower bottom surfaces of the inner cylinder 3-1 and the outer cylinder 3-1 are contacted, the inner cylinder 3-2 can horizontally slide on the lower bottom surface of the outer cylinder 3-1, the lower bottom surface of the outer cylinder 3-1 is fixed on a foundation, a spring is installed in a gap between the inner cylinder 3-1 and the outer cylinder 3-1 and is a memory alloy spring, the spring is contacted with the inner side surface of the outer cylinder 3-1 and the outer side surface of the inner cylinder 3-2, the spring is a ring-shaped spring formed by sequentially connecting the memory alloy rings end to end, the inner cylinder 3-2 horizontally slides and is matched with the ring-shaped memory alloy spring to be used, and the spring is limited by the side surface of the outer cylinder 3-1, so that during horizontal vibration, the sliding inner cylinder 3-2 contacts the spring limited by the outer cylinder 3-1, and the damping effect in the horizontal direction can be realized. In order to match the sliding effect, the inner surface of the lower bottom surface of the outer cylinder 3-1 is embedded with a polytetrafluoroethylene sliding plate, so that the friction coefficient is reduced.
Further, the side outer wall of the outer cylinder 3-1 is connected with the upper bottom surface of the inner cylinder by a right-angle limiting plate 3-6, so that one right-angle edge of the right-angle limiting plate 3-6 covers the gap between the inner cylinder 3-1 and the outer cylinder 3-1, the right-angle limiting plate 3-6 is provided with a plurality of right-angle limiting plates, so that springs can be arranged at different positions of the annular gap formed by the inner cylinder 3-1 and the outer cylinder 3-1 at intervals, the springs are limited in the gap, the springs are prevented from being separated from the gap, two right-angle edges of the right-angle limiting plate 3-6 are vertical edges, arc edges matched with the side outer wall are formed, edges connected with the bottom surface of the inner cylinder are plane edges, and plane edges matched with the arc edges connected with the inner cylinder.
Further, the combination of the inner and outer cylinders 3-1 defined above has three equal heights, i.e. the planes of the cylinders are at the same position and distributed in a triangle shape, and as a further scheme, the triangle is an equilateral triangle, and the shock absorption uniformity is good, so that the use strength of the three inner and outer cylinders 3-1 is easier to be kept consistent, the service time can be prolonged, the upper bottom surface of each inner cylinder 3-2 is connected with one end of a rectangular steel plate 3-4 by a bolt and a nut, the other end of the rectangular steel plate 3-4 is connected with a round steel plate 3-5, the combination of the inner and outer cylinders 3-1 distributed in a triangle shape is connected with the round steel plate 3-5 positioned in the center of the triangle shape by the three rectangular steel plates 3-4, in particular, the combination of the inner and outer cylinders 3-1 distributed in an equilateral triangle shape is formed, the three rectangular steel plates 3-4 connect the three combinations with the circular steel plate 3-5 positioned at the center of the triangle, the upper bottom surface of the inner cylinder 3-2, the rectangular steel plate 3-4 and the circular steel plate 3-5 are basically positioned at the same plane height, namely, the connection of bolts and nuts does not cause the angle inclination of the connection part, the circular steel plate 3-5 is fixedly connected with a building, the structure generates vertical vibration, the inner cylinder 3-2 folds inwards and expands outwards to compress the memory alloy spring in the annular shape, the energy consumption and the shock absorption are achieved, the structure is combined by the triangle, particularly the equilateral triangle arrangement, the energy consumption can be evenly realized, the energy consumption effect is good, and compared with the arrangement of other graph positions, the strength effect of the triangle arrangement of the supporting seat is better, in particular to stretching caused by vibration in the vertical direction, and the bearing capacity of the device is stronger.
Further, the ring shape memory alloy spring 3-3 is formed by densely connecting memory alloy rings, the elastic generating surface is the annular edge of each ring shape of the spring, and the ring-to-ring density is proper, that is, due to the compactness of the ring arrangement, the number of the rings impacted by the sliding of the cylinder in the horizontal direction is more, each ring is limited by the outer cylinder 3-1, so that the inner cylinder 3-1 and the outer cylinder 3-1 squeeze the rings to generate elasticity, the more compact the ring number of the rings squeezed at the same time, the greater the elasticity and the better the energy consumption effect, but the distribution of the rings which are too compact results in the rings being formed into a plane-like shape, instead the elasticity is reduced, so that the interval between two adjacent memory alloy rings is selected in the embodiment: 25-35 mm, at the ring spacing, not only avoids the reduction of the elasticity of the rings caused by too dense ring forming surfaces, but also avoids the reduction of the elasticity caused by too dredged impacted rings with less rings.
In one embodiment, as shown in fig. 3-3 and 3-4, the connection structure of the bolt and the nut is as follows: a vertical opening 3-7 is formed at one end of a rectangular steel plate 3-4, steel plate walls 3-8 at the left and right sides of the opening 3-7 are provided with transverse bolt holes 3-9 of the steel plate walls, a vertical rod 3-10 with a thickness matched with the width of the opening 3-7 is fixedly arranged at the lower bottom surface of a round steel plate 3-5, transverse bolt holes 3-11 of the vertical rod are formed on the vertical rod, when the vertical rod 3-10 is arranged in the vertical opening 3-7, bolts penetrate through the transverse bolt holes 3-9 of the steel plate walls and the transverse bolt holes 3-11 of the vertical rod and are fixed by nuts, the fixing positions of the nuts are near the outer walls of the steel plate walls 3-8 at the left and right sides of the opening 3-7, the vertical rod 3-10 is limited in the vertical opening 3-7, the thickness of the vertical rod is smaller than the width of the opening 3-7, so that the rectangular steel plate can rotate by taking the bolt as an axis, the connection of the bolt and the nut has the degree of freedom along the direction of the vertical rod, the opening 3-7 in the vertical direction can be naturally formed at the other end of the rectangular steel plate 3-4, the steel plate walls 3-8 on the left side and the right side of the opening 3-7 are provided with the transverse bolt holes 3-9 of the steel plate walls, the upper bottom surface of the inner cylinder 3-2 is fixedly provided with the vertical rod 3-10 with the thickness matched with the width of the opening 3-7, the transverse bolt holes 3-11 of the vertical rod are formed on the vertical rod, when the vertical rod 3-10 is arranged in the opening 3-7 in the vertical direction, the bolt penetrates through the transverse bolt holes 3-9 of the steel plate walls and the transverse bolt holes 3-11 of the vertical rod, the bolts are fixed by the nuts, the fixing positions of the nuts are near the outer walls of the steel plate walls 3-8 on the left side and the right side of the opening 3-7, the vertical rods 3-10 are limited in the opening 3-7 in the vertical direction, and the thickness (T) of the vertical rods is smaller than the width (W) of the opening 3-7, so that the rectangular steel plate can rotate by taking the bolts as shafts, and the connection of the bolts and the nuts also has the degree of freedom. The above enables stretching and compression in the vertical direction with a good degree of freedom. The positions of the supporting plate, the connecting plate and the inner cylinder in the vertical space are as follows: the support plate is located above the connection plate, which is located at the upper bottom surface of the inner cylinder, however, when no vertical stretching or compression is produced, i.e. in a rest state, the three planes are located at substantially the same plane level. The shock insulation support has omnibearing shock insulation, can bear the action of horizontal earthquake and the action of vertical earthquake simultaneously, is convenient and simple to detach among components, and is easy to maintain daily and repair after earthquake. The shape memory alloy material can not be welded with the steel material, so the annular shape memory alloy spring can be directly placed between the inner cylinder and the outer cylinder, and can be self-reset after earthquake. According to the invention, through the bolt and nut structure, the connecting plate has the freedom degree in at least one direction, namely, the connecting plate can rotate by the shaft, so that the connecting plate can be elastically stretched and compressed in the vertical direction in the vibration isolation support, and the energy consumption is assisted.
The implementation method of the annular shape memory alloy spring 3-3 omnibearing shock insulation support based on the above is as follows: as shown in fig. 3-2, in order to more clearly show the effect of deformation energy consumption caused by vertical stretching, fig. 3-2 amplifies the effect of deformation, so that the stretched state achieved by vertical stretching thereof can be more easily understood by those skilled in the art.
The outer surface of the lower bottom surface of the outer cylinder 3-1 is connected with a foundation, the round steel plate 3-5 is connected with a building, when the foundation has a horizontal earthquake effect, the inner surface of the lower bottom surface of the outer cylinder 3-1 and the outer surface of the lower bottom surface of the inner cylinder 3-2 slide horizontally, the inner cylinder 3-2 slides horizontally to compress the memory alloy spring with an annular shape in the horizontal direction, the elastic energy consumption of the spring is realized, the round steel plate 3-5 is positioned in the center of a triangle, particularly in the middle point position of an equilateral triangle, the three directions of the triangle formed by the inner cylinder 3-2 consume the horizontal vibration energy of the round steel plate 3-5, the energy consumption positions are more comprehensive and uniform, the energy consumption effect is better, and the constraint formed between the energy consumption positions can enhance the strength of the base; when the foundation has a vertical earthquake effect, the building is lifted or lowered relative to the foundation, the circular steel plates 3-5 are subjected to a stretching or compressing force in the vertical direction, and because the circular steel plates 3-5 are positioned at the central position of the triangle, particularly at the midpoint position of the equilateral triangle, the circular steel plates 3-5 have a stretching or pushing force in the horizontal direction, so that the horizontal sliding of the inner cylinder 3-2 is caused, the circular steel plates 3-5 stretch or compress the inner cylinder 3-2 connected with the circular steel plates through the rectangular steel plates 3-4, the inner cylinder 3-2 is folded or expanded outwards towards the inner center, the inner cylinder 3-2 is prevented from stretching out of the outer cylinder 3-1 under the effect of the limiting plates 3-6, and when the inner cylinder 3-2 is folded or expanded outwards towards the inner center, the annular shape memory alloy springs 3-3 are compressed by the outer side faces of the inner cylinder 3-2, and the elastic energy consumption of the springs is realized.
Example 4: in order to solve the problems of the existing shock-isolation and shock-absorption support, the shock-isolation and shock-absorption support of the embodiment uses shape memory alloy, and the shape memory alloy has excellent characteristics of shape memory effect, super elasticity, high damping, corrosion resistance and the like, and can be used as an ideal material of the shock-isolation and shock-absorption support and can be self-reset after shock.
A combined shock insulation support comprises a spring damper, a viscous damper, a connecting plate and a shape memory alloy stranded wire 4-2. Further, the spring damper comprises a second connecting steel plate 4-4, a third connecting steel plate 4-5, steel plates, steel cylinders with different diameters and a shape memory spring. One end of the steel plate is welded to the connecting steel plate, then one end of the cylinder is welded to the steel plate, the shape memory alloy springs 4-6 are installed in the cylinder, and then the cylinder with the small diameter is inserted into the cylinder with the large diameter. Further, the insertion of the cylinders having different diameters into the cylinder having a large diameter means that a small diameter is inserted into the cylinder having a large diameter, and a small diameter is inserted into the cylinder, so that a small diameter is formed between the outer wall of the cylinder and the inner wall of the cylinder having a large diameter, and a polytetrafluoroethylene slide plate is inserted between the two cylinders to allow smooth sliding between the two cylinders. Further, the viscous damper comprises a first connecting steel plate 4-1, a hydraulic cylinder 4-3, viscous damping liquid, nitrogen and a connecting rod 4-10. Further, steel bolts 4-8, steel nuts 4-7, shape memory alloy stranded wires 4-2, polytetrafluoroethylene sliding plates, limiting plates and L-shaped connecting steel plates 4-13 are also required. Further, the L-shaped connecting steel plates 4-13 are complete while reserved with holes.
As shown in fig. 4-1, the upper half part of the shock insulation support mainly bears the vertical earthquake action and consists of a first connecting steel plate 4-1, a second connecting steel plate 4-4, four hydraulic cylinders 4-3, connecting rods 4-10 and shape memory alloy stranded wires 4-2. The bottom of the hydraulic cylinder 4-3 is welded on the upper surface of the second connecting steel plate 4-4, and the connecting rod 4-10 is welded on the lower surface of the first connecting steel plate 4-1. The hydraulic cylinder 4-3 is filled with viscous damping liquid and nitrogen. The lower half part of the shock insulation support mainly bears the earthquake action in the horizontal direction and consists of a second connecting steel plate 4-4, a steel plate 4-12, a third connecting steel plate 4-5, a steel cylinder 4-11, a steel nut 4-7, a steel bolt 4-8, a limiting plate 4-9, an L-shaped connecting steel plate 4-13 and a shape memory alloy spring 4-6. One side outer side of the L-shaped connecting steel plate 4-13 is welded with the steel plate 4-12, the other side is fixed on the lower surface of the second connecting steel plate 4-4 by using a steel bolt 4-8 and a steel nut 4-7, then one end of a steel cylinder with small diameter is welded on the steel plate 4-12, the other side is welded with the steel plate 4-12, the other side is fixed on the upper surface of the third connecting steel plate 4-5 by using the steel bolt 4-8 and the steel nut 4-7, one section of a steel cylinder with large diameter is welded on the steel plate 4-12, then a shape memory alloy spring 4-6 is arranged in the cylinder, and the cylinder with small diameter is inserted into the cylinder with large diameter. The limiting plates 4-9 are welded on opposite sides of the L-shaped connecting steel plates 4-13 of the second and third connecting steel plates respectively. Since the shape memory alloy material and the steel plate cannot be welded, the connection mode between the shape memory alloy stranded wire 4-2 and the connecting steel plate is as shown in fig. 4-3, and the connection between the shape memory alloy spring 4-6 and the steel plate is connected by the steel bolt 4-8 and the steel nut 4-7.
As shown in fig. 4-3, the shape memory alloy stranded wires 4-2 are crossed up and down through the holes by reserving threading holes on four sides of the connecting steel plate, so as to form an 'X' -shape. As shown in fig. 4-2, steel cylinders 4-11 are laid flat between the second, third, joined steel plates. The invention has simple structure, can self-reset after earthquake and is easy to maintain. The steel plates 4-12 are anchored on the connecting steel plates through the L-shaped connecting steel plates 4-13, so that the inner shape memory alloy springs 4-6 can be disassembled, maintained and replaced after earthquake.
As shown in fig. 4-1 and 4-2, a combined vibration isolation support is an SMA spring-viscous damper combined vibration isolation support, which has an upper and a lower structure, wherein the upper part is used for isolating vertical vibration and the lower part is used for isolating horizontal vibration. The upper part is a viscous damper, and the lower part is a spring damper:
the viscous damper comprises a first connecting steel plate 4-1, a second connecting steel plate 4-4, a hydraulic cylinder 4-3 and a connecting rod 4-10, wherein the first connecting steel plate 4-1 and the second connecting steel plate 4-4 are oppositely arranged in the vertical direction, the bottom of the hydraulic cylinder 4-3 is welded on the second connecting steel plate 4-4, the connecting rod 4-10 is welded on the first connecting steel plate 4-1, viscous damping liquid and nitrogen are filled in the hydraulic cylinder 4-3, and the connecting rod 4-10 is propped against the groove of the hydraulic cylinder 4-3. The viscous damper further comprises a shape memory alloy stranded wire 4-2, threading hole grooves are reserved on four sides of the first connecting steel plate 4-1 and the second connecting steel plate 4-4, and the shape memory alloy stranded wire 4-2 penetrates through the threading hole grooves in an up-down staggered mode and forms an X shape. The hydraulic cylinder 4-3 is provided with more than two corresponding connecting rods 4-10.
The spring damper comprises a second connecting steel plate 4-4, a third connecting steel plate 4-5, at least one group of steel cylinders, steel nuts 4-7, steel bolts 4-8, vertical steel plates and springs, wherein the second connecting steel plate 4-4 and the third connecting steel plate 4-5 are vertically oppositely arranged, the steel cylinders are positioned between the second connecting steel plate 4-4 and the third connecting steel plate 4-5, the axes of the steel cylinders are in the transverse direction, the group of steel cylinders comprises two steel cylinders with different diameters, namely a first steel cylinder and a second steel cylinder, one end of the first steel cylinder is fixedly connected with the first vertical steel plate, the first vertical steel plate is fixedly connected with the second connecting steel plate 4-4, one end of the second steel cylinder is fixedly connected with the second vertical steel plate, the second vertical steel plate is abutted against the third connecting steel plate 4-5, the outer wall of the steel cylinder with the large diameter is abutted against the first connecting steel plate 4-1, the steel cylinder part with the small diameter is positioned in the cylinder with the large diameter so that the two cylinders are assembled, the two cylinders are in clearance fit, one end of the two steel cylinders are integrally, and the springs are integrally connected with the first steel plate and the other end of the first steel plate is fixedly connected with the first vertical steel plate, and the second vertical steel plate is fixedly connected with the other end of the first vertical steel plate. Under the condition, the radius of the first steel cylinder is smaller than that of the second steel cylinder, the first steel cylinder is only connected with the first vertical steel plate, the second steel cylinder is only connected with the second vertical steel plate, the outer wall of the cylinder of the second steel cylinder is propped against the first connecting steel plate 4-1 and the second connecting steel plate 4-4, the cylinder body of the steel cylinder part with small diameter is positioned in the cylinder with large diameter so that the two are assembled, and the two are in clearance fit, so that the fixing mode plays the roles of fixing, limiting and reinforcing support. On the first riser side, the end of the corresponding third connecting steel plate 4-5 is provided with a vertical limiting plate, and on the second riser side, the end of the corresponding second connecting steel plate 4-4 is provided with a vertical limiting plate.
The vertical steel plate is connected with the first connecting steel plate 4-1 or the second connecting steel plate 4-4 through an L-shaped connecting steel plate 4-13, the L-shaped connecting steel plate 4-13 is formed by two vertical fixing steel plates, one steel plate is welded on the vertical steel plate, and the other steel plate is anchored on the first connecting steel plate 4-1 or the second connecting steel plate 4-4 through bolts and nuts. Two ends of the spring are fixedly connected with one steel bolt 4-8 respectively, one of the two steel bolts 4-8 is fastened on the first vertical steel plate, the other is fastened on the second vertical steel plate, and each steel bolt 4-8 is provided with a steel nut 4-7 in threaded connection with the steel nut so as to fasten and connect the end part of the spring with the corresponding vertical steel plate. The springs are shape memory alloy springs 4-6. The shape memory alloy spring 4-6 enables the spring to have better elasticity and restoring force, the better elasticity can enable the spring to have better energy consumption and shock absorption effects, the better restoring force can enable the spring to restore to the original shape, and the service efficiency and the reusability of the spring are higher. The steel cylinders have four sets and are arranged in the longitudinal direction.
The vertical damping energy consumption is mainly carried out by viscous damper and shape memory alloy stranded wire, because the small-diameter steel cylinder is connected with the connecting plate 4-4, the large-diameter steel cylinder is connected with the connecting plate 4-5, and the small cylinder is sleeved in the large cylinder, so that the small cylinder cannot displace vertically. The horizontal direction is mainly the lower half part to shock absorption, because the large-diameter cylinder is connected with the connecting plate 4-5, the connecting plate 4-5 is connected with the foundation, the small cylinder is connected with the connecting plate 4-4, the connecting plate 4-4 and the upper half part of the whole device (namely the viscous damper) cannot generate horizontal displacement, so the whole device is regarded as a whole, the connecting plate 4-1 is connected with a building, when the horizontal direction is used for earthquake, the small cylinder can slide in the large cylinder (the small cylinder cannot slide and fall out due to the existence of the limiting plate), and the shape memory alloy spring is compressed to shock absorption. After the earthquake is finished, the shape memory alloy has self-resetting, so that the resetting can be performed.
The radius of the first steel cylinder is smaller than that of the second steel cylinder, the first steel cylinder is only connected with the first vertical steel plate, the second steel cylinder is only connected with the second vertical steel plate, the outer wall of the cylinder of the second steel cylinder is propped against the first connecting steel plate and the second connecting steel plate, the cylinder body of the small-diameter steel cylinder part is positioned in the cylinder with the large diameter to enable the cylinder body and the cylinder body to be assembled, the cylinder body and the cylinder body to be in clearance fit, the fixing mode plays roles of fixing, limiting and reinforcing supporting, the compact structure is compact in vibration, the fixing mode does not enable the steel cylinder to be too tightly fastened to adapt to energy consumption and be transmitted to the spring, the spring receiving energy consumption effect is not large, and the spring energy consumption effect is not obvious. The end parts of the corresponding third connecting steel plates are provided with vertical limiting plates on the first vertical plate side, and the end parts of the corresponding second connecting steel plates are provided with vertical limiting plates on the second vertical plate side. The shape memory alloy spring enables the spring to have better elasticity and restoring force, the better elasticity can enable the spring to consume energy and reduce shock, the better restoring force can enable the spring to restore to the original shape, and the use efficiency and the reusability of the spring are higher. The shock insulation and absorption support has the advantages of simple structure, good shock insulation and energy consumption, good durability and the like. Because of the shape memory alloy material, the support has good fatigue resistance, strong damping capacity, and stable performance and can be reset after earthquake. When bearing the load of the upper structure, the vertical shock insulation effect is also realized, and when the earthquake effect is large, the vertical shock insulation device can resist the tensile force generated by the upper structure and prevent the overturning.
Example 5: as shown in fig. 5-1, an energy dissipation and shock absorption support is simple in structure and adopts a shape memory alloy spring 5-1. The shape memory alloy has the characteristics of super elasticity, high damping, corrosion resistance, memory effect and the like, so the invention has the characteristics of long service cycle, easy daily maintenance, self-resetting after earthquake and the like. The invention comprises a shape memory alloy spring 5-1, two steel arms with different lengths and an outer sleeve 5-3. Further, a hole is reserved in the middle and at one end of the long steel arm, a plurality of holes are reserved on the horizontal arm of the long steel arm, a hole is reserved at two ends of the short steel arm, and the materials are connected through bolts. The invention has simple structure and is connected by bolts, so the invention is simple and convenient to disassemble and easy to maintain daily and repair after earthquake. The two long steel arms 5-2 are placed in an X shape, the reserved holes are aligned, the bolts are inserted, the nuts are arranged, and the scissors can rotate like scissors. The holes at one end of the two short steel arms 5-4 are correspondingly aligned with the holes at one end of the long steel arm 5-2, bolts are inserted, and nuts are arranged. A shape memory alloy spring 5-1 is arranged between the horizontal arm of the long steel arm 5-2 and the outer sleeve 5-3, and is also connected through bolts and nuts. When an earthquake occurs, the support can stretch or compress, the shape memory alloy spring can compress or stretch, the shape memory alloy can consume energy and absorb shock due to super elasticity and high damping, and the shape memory alloy can reset by itself due to the memory effect after the earthquake.
An X-shaped energy dissipation and shock absorption support comprises a shape memory alloy spring 5-1, a long steel arm group, an outer sleeve 5-3 and a short steel arm group, wherein the outer wall of the outer sleeve 5-3 is fixedly connected with a side column, the outer sleeve 5-3 consists of two opposite cross arms and a vertical wall connecting the two opposite cross arms, a first horizontal wall 5-7 is horizontally arranged below an upper cross arm 5-5, a second horizontal wall 5-8 is horizontally arranged above a lower cross arm 5-6, a plurality of groups of shape memory alloy springs 5-1 are vertically arranged between the upper cross arm 5-5 and the first horizontal wall 5-7 to connect the upper cross arm 5-5 with the first horizontal wall 5-7, a plurality of groups of shape memory alloy springs 5-1 are vertically arranged between the lower cross arm 5-6 and the second horizontal wall 5-8 to connect the lower cross arm 5-6 with the second horizontal wall 5-8, and the horizontal wall is not directly connected with the outer sleeve;
the long steel wall group is formed by intersecting a first long steel wall 5-9 and a second long steel wall 5-10 at the middle part, bolt holes are formed in the intersecting points, the two long steel walls are fastened by bolts and nuts, the bolts become rotation shafts of the two intersecting long steel walls, one end of the first long steel wall 5-9 is connected with the first horizontal wall 5-7, the other end of the first long steel wall 5-9 is provided with a first bolt hole, one end of the second long steel wall 5-10 is connected with the second horizontal wall 5-8, and the other end of the second long steel wall is provided with a second bolt hole;
The short steel wall group is formed by fixing a first short steel wall 5-11 and a second short steel wall 5-12 at a terminal point in a crossing manner; the first short steel wall 5-11 has a bolt hole corresponding to the first bolt hole, and is connected with the first long steel wall 5-9 by a bolt and a nut, the bolt is used as a rotation axis between the first short steel wall 5-11 and the first long steel wall 5-9, the second short steel wall 5-12 has a bolt hole corresponding to the second bolt hole, and is connected with the second long steel wall 5-10 by a bolt and a nut, and the bolt is used as a rotation axis between the second short steel wall 5-12 and the second long steel wall 5-10.
In this embodiment, it can be known that the short steel wall intersection point and the connection point of the outer cylinder barrel and the post are used as an integral fixing, so that the middle jolt support is stretched and compressed, the integral stretching or compression directly causes the long steel wall rotatably connected with the short steel wall bolt to rotate by taking the intersection point as an axis, so that the long steel wall is formed to have a flat or widening trend and stretching deformation in the vertical direction and is transferred to the horizontal wall connected with the long steel wall, the horizontal wall is not connected with the outer sleeve, however, the memory alloy spring is connected with the upper cross arm and the lower cross arm of the horizontal wall, the stretching of the horizontal wall is fixedly limited by the outer sleeve, so that the spring is stretched or compressed, thereby consuming energy, and after the shock, the memory alloy spring can reset by itself, so that the support can consume energy, recover after the shock, the consumption is saved, and the components of the structure act cooperatively, so that the structure is simple and compact while ensuring the realization of the energy consumption and self-recovering functions.
The outer side wall of the outer sleeve 5-3 is fixedly connected to one column of the frame, and the intersection fixed position of the terminal points of the first short steel wall 5-11 and the second short steel wall 5-12 of the short steel wall group is connected to the other column of the frame, and the two columns are horizontally opposite.
The outer side wall of the outer sleeve 5-3 is fixedly connected to one column of the frame, the fixed connection point is a connection point a, the crossed fixed position of the terminal points of the first short steel wall 5-11 and the second short steel wall 5-12 of the short steel wall group is connected with the other column of the frame, the fixed connection point is a connection point e, the crossing point of the first long steel wall 5-9 and the second long steel wall 5-10 is a connection point b, the connection point of the first long steel wall 5-9 and the first long steel wall 5-9 is a connection point c, and the connection point of the second long steel wall 5-10 and the second long steel wall 5-10 is a connection point d.
An X-shaped energy dissipation and shock absorption supporting method is characterized in that when an earthquake occurs, a frame can shake left and right, and the left and right shake compresses or stretches a supporting device. The outer side wall of the outer sleeve 5-3 is fixedly connected to one column of the frame, the fixed connection point is a connection point a, the crossed fixed position of the terminal points of the first short steel wall 5-11 and the second short steel wall 5-12 of the short steel wall group is connected with the other column of the frame, the fixed connection point is a connection point e, and the connection points a and e are connected to the columns opposite to the two sides of the frame. When the frame stretches, the support is stretched, the connecting points b, c and d can rotate, and stretching acts on the connecting points a and e, so that the crossed first long steel wall 5-9, second long steel wall 5-10, first short steel wall 5-11 and second short steel wall 5-12 are stretched, and therefore the vertical flattening trend is shown, the included angle between the first long arm and the second long arm is reduced, the horizontal arm is stretched and closed and is far away from the outer sleeve 5-3, and the shape memory alloy spring 5-1 is stretched.
When the frame is compressed, the support is compressed, the connection points b, c and d can rotate, and the compression acts on the connection points a and e, so that the crossed first long steel wall 5-9, second long steel wall 5-10, first short steel wall 5-11 and second short steel wall 5-12 are compressed, and therefore the vertical widening trend is shown, the included angle between the first long arm and the second long arm is increased, the horizontal arm is compressed and approaches the outer sleeve 5-3, and the shape memory alloy spring 5-1 is compressed.
The force of the rotation handle is transferred between the horizontal arm and the outer sleeve 5-3, so that the horizontal arm is far away from or close to the outer sleeve 5-3, and the shape memory alloy spring 5-1 is stretched or compressed. The shape memory alloy spring 5-1 stretches or compresses, the horizontal wall is stretched or compressed by the long steel wall, and the horizontal wall is fixed on the upper cross arm 5-5 or the lower cross arm 5-6 by the shape memory alloy spring 5-1, so that the shape memory alloy spring 5-1 is stretched or compressed in the directions of two transverse connecting points a and e.
The invention forms the crossed rotatable connection of the long steel wall and the short steel wall, the deformation of the long steel wall acts on the spring, the shape memory alloy spring is used for the spring, the energy consumption can be realized under the stretching or compression deformation of the long steel wall, the self-resetting after the earthquake can be realized, the structure is simple, and the connection is realized by bolts, so the disassembly is simple and convenient, and the daily maintenance and the post-earthquake repair are easy.
Example 6: a shock absorbing system comprising a combination of two or more of a support shock absorber, an buckling restrained brace, a shock-isolation mount, a shock absorbing brace, wherein: the support shock absorber is a shape memory alloy stranded wire support shock absorber, the buckling restrained brace is an assembled buckling restrained brace, the shock insulation support is an annular shape memory alloy spring omnibearing shock insulation support or a combined shock insulation support, and the shock absorption support is an X-shaped energy dissipation shock absorption support (namely the product of the structure described in the above embodiments). In a shock absorption system, including the combination of any two in shape memory alloy stranded wire support shock absorber, assembled buckling restrained brace, annular shape memory alloy spring all-round shock insulation support, combination shock insulation support, X type energy dissipation shock absorber support, two damping device in this combination are installed in parallel, two damping device are installed in parallel jointly and are constituteed shock absorption system, can exert the shock attenuation complementation effect at shock absorption direction etc. because different damping device has own advantage, correspondingly also have the defect, consequently, form combined product and can complement each other, as further technical scheme, and at shape memory alloy stranded wire support shock absorber, assembled buckling restrained brace, annular shape memory alloy spring all-round shock insulation support, combination shock insulation support, X type energy dissipation shock absorber support's surface spraying fire prevention coating, thereby the problem that probably takes place the conflagration and lead to damping device to by direct damage in the earthquake is solved.
The fireproof coating is prepared from the following raw materials in parts by weight:
the raw materials are crushed, stirred and mixed to obtain the coating, and the coating forms a coating on the surfaces of the supporting shock absorber, the buckling restrained brace, the shock insulation support and the shock absorption support. The coating thickness was 2mm and the fire resistance limit time was determined to be 63 minutes.
In this embodiment, as a preferred solution, a detailed description is made about a shock absorbing system, however, the shape memory alloy stranded wire supporting shock absorber, the assembled buckling restrained brace, the annular shape memory alloy spring omnibearing shock-absorbing support, the combined shock-absorbing support, and the combination of any two or more than two X-shaped shock-absorbing supports, two or more shock absorbing devices in the combination are installed in parallel, and the two shock absorbing devices are jointly installed in parallel to form the shock absorbing system, which belongs to the shock absorbing system of the invention. The first shock-insulating support is an annular shape memory alloy spring omnibearing shock-insulating support, and the second shock-insulating support is a combined shock-insulating support. The first shock insulation support is located above the second shock insulation support, and then the bottom surface of the outer cylinder of the all-round shock insulation support of the annular shape memory alloy spring is fixedly connected to the upper surface of the first connecting steel plate. The combined vibration isolation support is in an upper and lower structure, the upper part is used for isolating vertical vibration, and the lower part is used for isolating horizontal vibration, and the combined vibration isolation support in embodiment 4 is specifically referred to. The annular shape memory alloy spring omnibearing shock insulation support is specifically referred to as a shock insulation support in embodiment 3. For the device which absorbs shock in two directions, the compression and the extension of the spring (namely the influence of the energy consumption of the spring) can be simply increased by a single device, but the energy consumption level is not ideal, the length of the spring is increased to a certain range, and the energy consumption strength of the spring cannot be greatly increased, so that the cooperative use of the two combinations is considered, and compared with the scheme of simply increasing the length of the spring, the energy consumption effect is better. That is, the scheme solves the problem that the energy consumption effect cannot be better improved by simply increasing the length of the spring.
As a specific example: the preparation method of the fire-fighting coating fireproof material for the building comprises the steps of mixing ammonium polyphosphate, melamine, tricresyl phosphate, titanium pigment, acetone, sodium hexametaphosphate, sepiolite, hard calcium carbonate, nano magnesium hydroxide, antimonous oxide, tin oxide, zinc borate and dimethyl silicone oil in raw materials, stirring in a container, adding the raw materials, wherein the stirring speed is 300r/min until the raw materials are added, adjusting the stirring speed to 1200r/min, continuing stirring for 20min to obtain premix, and grinding the premix to obtain powder raw materials; adding acrylic resin, dodecanol ester and glass beads into the powder raw material, stirring for 2 hours at the stirring speed of 1000r/min, adding dipentaerythritol in the raw material, and continuing stirring for 20 minutes at the current speed to obtain the fireproof coating.
A method for coating a fireproof coating of a supporting shock absorber comprises the steps of coating the fireproof material of a building fire-fighting coating prepared by the preparation method on the supporting shock absorber, and forming a coating on the surface of the supporting shock absorber.
Further, the supporting shock absorber comprises an upper steel plate (1-1), a lower steel plate (1-2), an L-shaped steel plate (1-4), an L-shaped connecting steel plate (1-3), a steel block (1-6), stranded wires (1-7) and a stranded wire connecting device; the L-shaped steel plates (1-4) comprise vertical plates and transverse plates which are mutually and vertically connected, the L-shaped steel plates (1-4) are arranged between the upper steel plates (1-2) and the lower steel plates (1-2), and the two L-shaped steel plates (1-4) are oppositely arranged; the vertical plate of the L-shaped steel plate (1-4) is fixedly connected with the upper steel plate (1-1) through an L-shaped connecting plate; a partition is arranged between transverse plates of two L-shaped steel plates (1-4) which are oppositely arranged, steel blocks (1-6) are arranged and filled in the partition, and the vertical height of the steel blocks (1-6) is larger than that of the transverse plates; the transverse plate of the L-shaped steel plate (1-4) is propped against the lower steel plate (1-2), the bottom plane of the transverse plate is flush with the bottom plane of the steel block (1-6), the steel block (1-6) is fixedly connected with the lower steel plate (1-2) through the bottom plane of the steel block, the steel block (1-6) vertically extends out of the transverse plate, a plurality of through holes which are longitudinally arranged are formed in the side surface of the steel block, two opposite vertical plates of the L-shaped steel plate are oppositely provided with stranded wire connecting devices at the corresponding longitudinal positions, the stranded wires (1-7) penetrate through the through holes, two end parts of the stranded wires (1-7) are connected with two stranded wire connecting devices which are opposite at the corresponding positions, and the stranded wires (1-7) are shape memory alloy stranded wires (1-7).
Further, the first limiting plate (1-5) is vertically arranged between the upper steel plate (1-1) and the steel block (1-6), the top plane of the steel block (1-6) is fixedly connected with the lower surface of the first limiting plate (1-5), the upper surface of the first limiting plate (1-5) is propped against the upper steel plate (1-1), the first limiting plate (1-5) is transversely arranged between the vertical plates of the two opposite L-shaped steel plates (1-4), and the two opposite lateral sides of the first limiting plate (1-5) are propped against the corresponding vertical plates;
further, a through groove is formed in the transverse side face of the steel block (1-6), the second limiting plate (1-8) penetrates through the through groove, the second limiting plate (1-8) is located at the portion, outside the through groove, of the steel block (1-6), and the lower surface of the second limiting plate is fixedly connected with the upper surfaces of the two opposite transverse plates.
Further, the building fire-fighting coating fireproof material prepared by the preparation method is prepared from the following raw materials in parts by weight:
while the invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. The shape memory alloy stranded wire supporting shock absorber is characterized by comprising an upper steel plate (1-1), a lower steel plate (1-2), an L-shaped steel plate (1-4), an L-shaped connecting steel plate (1-3), a steel block (1-6), stranded wires (1-7) and a stranded wire connecting device; the L-shaped steel plates (1-4) comprise vertical plates and transverse plates which are mutually and vertically connected, the L-shaped steel plates (1-4) are arranged between the upper steel plates and the lower steel plates, and the two L-shaped steel plates (1-4) are oppositely arranged; the vertical plate of the L-shaped steel plate (1-4) is fixedly connected with the upper steel plate (1-1) through an L-shaped connecting plate; a partition is arranged between transverse plates of two L-shaped steel plates (1-4) which are oppositely arranged, steel blocks (1-6) are arranged and filled in the partition, and the vertical height of the steel blocks (1-6) is larger than that of the transverse plates; the transverse plate of the L-shaped steel plate (1-4) is propped against the lower steel plate (1-2), the bottom plane of the transverse plate is flush with the bottom plane of the steel block (1-6), the steel block (1-6) is fixedly connected with the lower steel plate (1-2) through the bottom plane of the steel block, a plurality of through holes which are arranged along the longitudinal direction are formed in the side surface of the steel block (1-6) at the part which vertically exceeds the transverse plate, two opposite vertical plates of the L-shaped steel plate are oppositely provided with stranded wire connecting devices at the corresponding longitudinal positions, stranded wires (1-7) penetrate through the through holes, two end parts of the stranded wires (1-7) are connected with two stranded wire connecting devices which are opposite at the corresponding positions, and the stranded wires (1-7) are shape memory alloy stranded wires (1-7);
The first limiting plates (1-5) are vertically arranged between the upper steel plate (1-1) and the steel blocks (1-6), the top plane of each steel block (1-6) is fixedly connected with the lower surface of each first limiting plate (1-5), the upper surfaces of the first limiting plates (1-5) are propped against the upper steel plate (1-1), the first limiting plates (1-5) are transversely arranged between the vertical plates of the two opposite L-shaped steel plates (1-4), and the two opposite transverse side surfaces of each first limiting plate (1-5) are propped against the corresponding vertical plates;
a through groove is formed in the transverse side surface of the steel block (1-6), the second limiting plate (1-8) penetrates through the through groove, the second limiting plate (1-8) is positioned at the part outside the through groove of the steel block (1-6), and the lower surface of the second limiting plate is fixedly connected with the upper surfaces of the two opposite transverse plates;
the through grooves are longitudinally arranged on the lateral side face, and are correspondingly provided with more than two second limiting plates (1-8).
2. The shock absorber of claim 1 wherein said plurality of twisted wire connection means are arranged in a linear pattern with a plurality of spaced apart adjacent twisted wire connection means being aligned with each other at longitudinally corresponding locations on said riser.
3. The shape memory alloy strand support damper according to claim 1, wherein the steel blocks (1-6) have a plurality of through holes arranged in a longitudinal direction, which are linearly distributed, and have a plurality of through holes, and the distances between the adjacent through holes are uniform.
4. Shape memory alloy strand support damper according to claim 1, characterized in that the strand connecting means comprise vertical grooves or holes and bolts (1-9) provided in the riser, threaded holes being provided in the upper or lower edges of the grooves or holes, in which bolts are incompletely anchored, the bolt portions exposing the threaded holes serving as strand connecting means for connecting strands (1-7).
5. A shape memory alloy strand support damper according to claim 1, wherein the strand connecting means comprises a vertical hole and a bolt provided in the riser, the upper or lower edge of the hole being provided with a threaded hole, the bolt being incompletely anchored therein, the portion of the bolt exposing the threaded hole being the strand connecting means for connecting the strands (1-7).
6. The shape memory alloy strand support damper according to claim 1, wherein the riser of the L-shaped steel plate (1-4) is fixedly connected with the upper steel plate (1-1) by an L-shaped connecting plate, the L-shaped connecting steel plate (1-3) is formed of two vertically fixed steel plates, one steel plate is welded on the L-shaped steel plate (1-4), and the other steel plate is anchored on the upper steel plate (1-1) by bolts and nuts.
7. Shape memory alloy strand support damper according to claim 1, characterized in that a polytetrafluoroethene slide plate is embedded between the first limiting plate (1-5) and the upper steel plate (1-1), and/or a polytetrafluoroethene slide plate is embedded between the first limiting plate (1-5) and the L-shaped steel plate (1-4), and/or a polytetrafluoroethene slide plate is embedded between the L-shaped steel plate (1-4) and the lower steel plate (1-2).
CN201811394294.5A 2018-11-21 2018-11-21 Shape memory alloy stranded wire supporting shock absorber Active CN109457831B (en)

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