CN202099875U - Shape memory alloy self-resetting multidimensional shock insulation support - Google Patents

Abstract

The utility model discloses a shape-memory alloy self-resetting multi-dimensional shock-isolation support, which is characterized in that the shock-isolation support comprises an upper support steel plate (1) and a lower support set opposite to the upper support steel plate (1). The steel plate (2), the support core tube (3) connected to the lower surface of the support upper steel plate (1), the support outer tube (4) connected to the upper surface of the support lower steel plate (2), wherein the support core tube (3) Located in the bearing outer cylinder (4), the shock-isolation bearing also includes a supporting shape memory alloy rod (5) and a balanced shape memory alloy rod (6) located in the bearing outer cylinder (4); wherein, The two ends of the supporting shape memory alloy rod (5) are respectively hinged with the support outer cylinder (4) and the support core cylinder (3), and the two ends of the balanced shape memory alloy rod (6) are respectively connected with the support outer cylinder (4) Hinged with the support core tube (3). The utility model has the advantages of simple structure, good vibration isolation and energy consumption effect, and good durability.

Description

Shape memory alloy self-resetting multi-dimensional shock-isolation bearing

technical field

The utility model relates to a support for multi-dimensional isolation and shock absorption of engineering structures, which belongs to the technical field of anti-seismic load control devices for civil engineering structures.

Background technique

Earthquake action is the main control load borne by civil engineering structures, and it is also the main factor leading to the damage and collapse of structures. Accurately understanding the response of structures under earthquake action and taking reliable protection measures is not only related to the seismic performance of the structure itself, but also directly related to the safety of people's lives and national economic property, which has huge social and economic benefits.

Seismic isolation is the earliest passive control method studied and applied at home and abroad, and a large number of experimental studies, actual engineering construction and multiple strong earthquake tests have proved that seismic isolation can greatly reduce the seismic response of civil engineering structures. A general seismic isolation system must have the following characteristics: bearing characteristics, seismic isolation characteristics, reset characteristics, damping and energy dissipation characteristics, and stability and durability. Shape memory alloy (Shape Memory Alloy, SMA) is an important intelligent material, which has the advantages of good fatigue resistance, strong damping ability, large recoverable deformation and stable performance. At present, the idea of using SMA for structural isolation is mainly to combine shape memory alloy materials with conventional isolation devices: ① Utilize the high damping characteristics of shape memory alloys to improve the energy dissipation capacity of isolation bearings; ② use shape memory The shape memory effect or superelastic effect of the alloy enables the bearing to reset automatically or by heating (energizing) after the earthquake; ③Using the strength and elastic modulus of the shape memory alloy can improve the vertical pullout resistance of the seismic isolation bearing, And limit the maximum displacement of the bearing during vibration.

Most of the various seismic isolation devices that have been developed only play the role of horizontal seismic isolation, and cannot play the role of simultaneous horizontal and vertical isolation. However, a large number of actual earthquake damage shows that the damage to civil engineering structures caused by vertical earthquakes cannot be ignored. Therefore, it is very necessary to develop seismic isolation devices that can simultaneously isolate horizontal and vertical seismic actions.

Contents of the invention

Technical problem: The purpose of this utility model is to develop a shape memory alloy self-resetting multi-dimensional seismic isolation bearing with strong damping capacity, large recoverable deformation, reliable performance, good durability and convenient construction. And vertical earthquake, it has the ability of self-resetting after earthquake, and it can also dissipate vibration energy, protect the isolation device from being damaged under external excitation, and self-reset after earthquake.

Technical solution: In order to solve the above technical problems, the utility model provides a shape memory alloy self-resetting multi-dimensional shock-isolation support, which includes an upper steel plate on the support, a lower steel plate opposite to the upper steel plate on the support, The support core tube connected to the lower surface of the upper steel plate of the support, and the support outer tube connected to the upper surface of the lower steel plate of the support, wherein the support core tube is located in the support outer tube,

The shock-isolation bearing also includes supporting shape memory alloy rods and balanced shape memory alloy rods located in the outer cylinder of the bearing; wherein, the two ends of the supporting shape memory alloy rods are respectively hinged with the outer cylinder of the bearing and the core cylinder of the bearing, balanced The two ends of the shape memory alloy rod are respectively hinged with the outer cylinder of the support and the core cylinder of the support.

Preferably, the shock-isolation support also includes an inner universal joint connection and an outer universal joint connection, wherein the two ends of the supporting shape memory alloy rod are respectively connected to the outer cylinder of the support through the inner universal joint connection and the outer universal joint connection It is hinged with the core tube of the support, and the two ends of the balanced shape memory alloy rod are respectively hinged with the outer tube of the support and the core tube of the support through an inner universal joint connection and an outer universal joint connection.

Preferably, the material used for supporting the shape memory alloy rod and the balanced shape memory alloy rod is a shape memory alloy rod or cable.

Preferably, the cross-sectional area of the supporting shape-memory alloy rod is larger than the cross-sectional area of the equilibrium shape-memory alloy rod.

Beneficial effects: the shape memory alloy self-resetting multi-dimensional shock-isolation support of the utility model has the advantages of simple structure, good shock-isolation energy consumption effect, and good durability. Since the main material is a shape memory alloy material, the support has good fatigue resistance, strong damping capacity, large recoverable deformation and stable performance. It can isolate the seismic action in any horizontal direction, showing horizontal isotropy; moreover, while carrying the upper structure, it also has the function of vertical isolation, which can control the lifting force generated by the upper structure, and effectively solves the problem of seismic isolation. The problem of multi-dimensional seismic isolation; when the wind load acts, it has a certain initial stiffness and will not cause excessive deformation; at the same time, it has the ability to damp energy consumption and limit the amount of structural slippage, and can make the seismic isolation device in the It has sufficient deformation capacity and self-resetting function when encountering the earthquake design strength. It can be widely used in various civil engineering structures.

Description of drawings

Fig. 1 is the elevation structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of the plane structure of the utility model;

Fig. 3 is a schematic diagram of a universal hinge node of the present invention;

In the above figure, there are: the steel plate 1 on the support; the steel plate 2 under the support; the core cylinder 3 of the support; the outer cylinder 4 of the support; the supporting shape memory alloy rod 5; the balanced shape memory alloy rod 6; Outer universal hinge connection 8; upper structure 9; lower structure 10; upper connecting bolt 11; embedded bolt 12; adjusting nut 81; adjusting screw rod 82.

Detailed ways

Referring to Figures 1-3, the shape memory alloy self-resetting multi-dimensional shock-isolation bearing is a multi-dimensional shock-isolation (damping) device used in the field of civil engineering. The support is mainly composed of a support upper steel plate 1, a support lower steel plate 2, a support core cylinder 3, a support outer cylinder 4, a supporting shape memory alloy rod (cable) 5, a balanced shape memory alloy rod (cable) 6 and some Connecting components etc.

The steel plate on the support is welded to the core tube of the support, the steel plate on the lower support is welded to the outer tube of the support, a certain distance is left between the bottom of the core tube of the support and the top of the steel plate under the support, and the supporting shape memory alloy rod 5 is connected to the core tube of the support 3 and the bearing outer cylinder 4 are hinged. All supporting shape memory alloy rods (cables) 5 in the support are always in a stretched state, and their length, angle with the horizontal direction and initial state are all the same, and the cross-sectional area of the supporting shape memory alloy rods (cables) 5 is larger than that of the balanced shape memory alloy rods (cable) 6, able to carry the upper structure. The relative movement between the support core cylinder and the support outer cylinder makes the shape memory alloy rod stretch and shrink, and completes the functions of shock isolation and energy dissipation. The utility model has the advantages of simple structure, good shock isolation and energy consumption effect, and good durability. It can dissipate vibration energy while isolating horizontal and vertical excitation, and can automatically return to the pre-earthquake state after the earthquake. It will not be damaged under external excitation, and can automatically return to the pre-earthquake state after the earthquake. It can be widely used in the seismic isolation of civil engineering structures.

The utility model provides a shape memory alloy self-resetting multi-dimensional shock-isolation support, which includes an upper support steel plate 1, a support lower steel plate 2 arranged opposite to the support upper steel plate 1, and a support connected to the lower surface of the support upper steel plate 1. Seat core cylinder 3 , the support outer cylinder 4 connected with the upper surface of the support lower steel plate 2 , wherein the support core cylinder 3 is located in the support outer cylinder 4 .

The shock-isolation bearing also includes a supporting shape memory alloy rod 5 and a balanced shape memory alloy rod 6 located in the outer cylinder 4 of the bearing; The core tube 3 is hinged, and the two ends of the balanced shape memory alloy rod 6 are respectively hinged with the support outer tube 4 and the support core tube 3 .

The shock-isolation support also includes an inner universal hinge connection 7 and an outer universal hinge connection 8, wherein the two ends of the supporting shape memory alloy rod 5 are connected to the support through the inner universal hinge connection 7 and the outer universal hinge connection 8 respectively. The outer cylinder 4 is hinged to the support core tube 3, and the two ends of the balanced shape memory alloy rod 6 are hinged to the support outer cylinder 4 and the support core tube 3 through the inner universal joint connection 7 and the outer universal joint connection 8 respectively.

The material used to support the shape memory alloy rod 5 and the balanced shape memory alloy rod 6 is a shape memory alloy rod or cable.

The cross-sectional area of the supporting shape memory alloy rod 5 is larger than that of the balanced shape memory alloy rod 6 .

Specifically, the shape-memory alloy self-resetting multi-dimensional shock-isolation bearing of the utility model is mainly composed of an upper steel plate 1 on the bearing; a lower steel plate 2 on the bearing; a core cylinder 3 on the bearing; an outer cylinder 4 on the bearing; Balanced shape memory alloy rod (cable) 6; inner universal joint connection 7; outer universal joint connection 8; upper structure 9; lower structure 10; upper connecting bolt 11; embedded bolt 12; adjusting nut 81; adjusting screw rod 82 composition. The shock-isolation support is an axisymmetric structure, and the core cylinder 3 of the support is coaxial with the outer cylinder 4 of the support. The steel plate 1 on the support rests on the core tube 3 of the support and is fixedly connected to it by welding, and the outer tube 4 of the support is placed on the steel plate 2 under the support and is fixedly connected to it by welding; the supporting shape memory alloy rod (cable) 5 and the balanced shape memory alloy rod (cable) 6 are hinged with the support core tube 3 through the inner universal joint connection 7, and hinged with the support outer cylinder 4 through the outer universal joint connection 8; the upper steel plate 1 of the support is connected with the upper bolt 11 Or welding is connected with the upper structure 9, and the steel plate 2 under the support is connected with the lower structure 10 through embedded bolts 12 or welding.

The specific implementation steps are as follows: according to the requirements of structural isolation, determine the material properties, size, quantity of each component of the support and the distance between the bottom of the core tube 3 of the support and the top of the steel plate 2 under the support. Weld the core tube 3 of the support with the steel plate 1 on the support, and weld the outer cylinder 4 of the support with the steel plate 2 under the support. The support core tube 3 and the support outer tube 4 are fixed at the initial design positions by means of additional brackets and the like. The shape memory alloy rods (cables) 5 and 6 are connected to the support core tube 3 with the inner universal joint 7, and the shape memory alloy rods (cables) 5 and the balanced shape memory alloy rods ( The cable) 6 is connected to the support outer cylinder 4, and the adjusting nut 81 and the adjusting screw 82 on the outer universal joint connection 8 are adjusted so that the supporting shape memory alloy rod (cable) 5 and the balanced shape memory alloy rod (cable) 6 reach the design initial stage status and fixed. The lower steel plate 2 of the support is fixedly connected to the substructure 10 through embedded bolts 12 , and the upper steel plate 1 of the support is fixedly connected to the upper structure 9 through the connecting bolts 11 and the upper steel plate 1 of the support through the connecting bolts 11 . After the vertical load of the structure is transferred to the support, the additional support is removed.

The above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above-mentioned embodiments, but any equivalent modification or change made by those of ordinary skill in the art according to the content disclosed in the present utility model, All should be included in the scope of protection described in the claims.

Claims (4)

1. a marmem is from resetting the multiple dimension shock-proof bearing; It is characterized in that: this shock isolating pedestal comprises bearing upper steel plate (1), the bearing lower steel plate (2) that is oppositely arranged with bearing upper steel plate (1), the bearing core tube (3) that is connected with bearing upper steel plate (1) soffit, the bearing urceolus (4) that is connected with bearing lower steel plate (2) upper surface; Wherein bearing core tube (3) is positioned at bearing urceolus (4)

This shock isolating pedestal also comprises support marmem rod (5) and the balance marmem rod (6) that is positioned at bearing urceolus (4); Wherein, the two ends of supporting marmem rod (5) are hinged with bearing urceolus (4) and bearing core tube (3) respectively, and the two ends of equilibrium configuration memorial alloy rod (6) are hinged with bearing urceolus (4) and bearing core tube (3) respectively.

2. marmem according to claim 1 is from resetting the multiple dimension shock-proof bearing; It is characterized in that: universal being hinged (7) and outer universal being hinged (8) in this shock isolating pedestal also comprises; Wherein, The two ends of supporting marmem rod (5) are hinged with bearing urceolus (4) and bearing core tube (3) through interior universal being hinged (7) and outer universal being hinged (8) respectively, and the two ends of equilibrium configuration memorial alloy rod (6) are hinged with bearing urceolus (4) and bearing core tube (3) through universal being hinged (7) in drawing together and outer universal being hinged (8) respectively.

3. marmem according to claim 1 is characterized in that from resetting the multiple dimension shock-proof bearing: supporting marmem rod (5) and balance marmem rod (6) material therefor is marmem bar or rope material.

4. marmem according to claim 1 is characterized in that from resetting the multiple dimension shock-proof bearing: support the sectional area of the sectional area of marmem rod (5) greater than equilibrium configuration memorial alloy rod (6).

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