Assembled graded anti-seismic self-resetting metal damper
By designing an assemblable, graded, self-resetting metal damper, and utilizing the memory reset device and the graded activation of the shear key, the problems of low energy consumption efficiency and insufficient self-resetting capability of traditional energy dissipation and damping support systems are solved, achieving the effects of efficient energy dissipation and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2026-03-27
AI Technical Summary
Traditional energy dissipation and vibration damping support systems have low energy consumption efficiency, lack self-resetting function and graded design, resulting in frequent replacements during minor earthquakes and easy damage under major earthquakes, and the replacement cost is high.
Design an assemblable graded seismic self-resetting metal damper, comprising a detachable outer cylinder and an internal memory reset device and metal energy dissipation damping device. Energy dissipation and automatic reset are achieved through graded snap-fit and shear key, and the shape memory effect of the SMA compression pad is adjusted by heating with electric heating wire.
It achieves efficient energy dissipation, convenient maintenance and automatic reset. The graded activation of the shear key ensures effective operation under different earthquake magnitudes. The heating wire assists the SMA in restoring its shape and adapting to temperature changes.
Smart Images
Figure CN224048428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to civil engineering technical field, concretely is a kind of assembly hierarchical anti-seismic self-resetting metal damper. BACKGROUND
[0002] In the field of civil engineering, the traditional energy dissipation and seismic mitigation support system is mainly based on the principle of buckling-restrained brace, and its core is to use the plastic yield deformation of the core member under tension and compression to dissipate energy. The energy dissipation efficiency of traditional buckling-restrained brace is only 30%-40%, and the reset ability is almost zero. Although the metal shear type damper can improve to 50%-60%, it lacks hierarchical design, which leads to early failure under moderate earthquake.
[0003] The metal shear energy dissipation mechanism dissipates energy by producing shear plastic deformation in the thickness direction of the metal. By increasing the thickness of the metal, the energy dissipation performance of the component can be greatly improved without significantly increasing the cross-sectional area.
[0004] However, the traditional energy dissipation support system usually lacks self-resetting function. Once the core member yields plastically, it will cause permanent deformation and cannot return to the original position, which leads to the failure of the support system and cannot continue to function. This situation may occur under small earthquakes, which leads to the need to frequently replace the support system, which is not conducive to long-term sustainable use. Traditional energy dissipation support systems often do not have hierarchical seismic function. They are difficult to activate effectively under small earthquakes, and are easily damaged under large earthquakes. At the same time, the internal component design of traditional energy dissipation support is complex, and the internal and external structures are usually a whole, which has high replacement cost after earthquake. Therefore, a kind of assembly hierarchical anti-seismic self-resetting metal damper is needed to meet people's needs. UTILITY MODEL CONTENTS
[0005] The utility model aims to provide a kind of assembly hierarchical anti-seismic self-resetting metal damper to solve the problems raised in the above background technology.
[0006] To achieve the above purpose, the utility model provides the following technical scheme: a kind of assembly hierarchical anti-seismic self-resetting metal damper, including detachable outer cylinder;The detachable outer cylinder is composed of upper cylinder body, lower cylinder body, cover plate and base, the lower cylinder body is fixedly installed above base, the upper cylinder body is fixedly installed above lower cylinder body, the cover plate is fixedly installed above upper cylinder body, the detachable outer cylinder is equipped with connecting support device, the lower cylinder body is equipped with metal energy dissipation and seismic mitigation device, the upper cylinder body is equipped with memory reset device, the memory reset device and metal energy dissipation and seismic mitigation device are all arranged on connecting support device, electric heating wire is fixedly installed on the inner wall of upper cylinder body;
[0007] Preferably, the connecting support device comprises a connecting plate, a sliding rod is fixedly installed on the upper surface of the connecting plate, the sliding rod is slidingly installed in the upper cylinder, an end cap is fixedly installed on the end of the sliding rod away from the connecting plate, the end cap is installed above the cover plate, and a connecting rod is fixedly installed on the lower surface of the connecting plate.
[0008] Preferably, the connecting rod is a regular polygonal prism in cross-sectional profile.
[0009] Preferably, the memory reset device comprises SMA compression pads, the SMA compression pads are hierarchically nested on the sliding rod, and a hierarchical buckle is fixedly connected between each layer of the SMA compression pads.
[0010] Preferably, the SMA compression pads are divided into three groups according to thickness, and correspond to small, medium and large earthquake levels respectively.
[0011] Preferably, the metal energy dissipation and shock absorption device comprises shear keys, the shear keys are fixedly installed on the connecting rod in a circumferential distribution mode, the shear keys are arranged in groups at equal intervals on the outer wall of the connecting rod in the axial direction of the connecting rod, and the free edges of the shear keys are concave circular arcs.
[0012] Preferably, the lower cylinder is provided with multiple levels of gaps, and one end of the shear key is installed in the multiple levels of gaps.
[0013] Preferably, flanges are fixedly installed at both ends of the upper cylinder and the lower cylinder, and the upper cylinder and the lower cylinder are fixedly connected with the cover plate and the base through the flanges and a fixed bolt set.
[0014] Preferably, the base is provided with a fixed circular hole.
[0015] Compared with the prior art, the utility model has the advantages that:
[0016] (1) The utility model discloses a hierarchical shear key and SMA compression pad, which realize efficient energy dissipation and convenient maintenance performance, the shear keys are arranged in groups at equal intervals along the length direction of the connecting rod, ensuring that each outer wall surface of the connecting rod is arranged, thereby uniformly absorbing and dissipating energy under the action of earthquake or vibration, and the free edges of the shear keys are designed as concave circular arcs, realizing shear deformation through the minimum cross-sectional area of the middle part and providing an effective energy dissipation mechanism.
[0017] (2) The utility model discloses a detachable outer cylinder, wherein the outer wall of the outer cylinder is cylindrical, and the inner wall has different shapes in different sections, the inner wall of the upper cylinder is a cylindrical surface, corresponding to the position of the connecting plate, used for realizing the push-pull displacement of the sliding rod, thereby controlling the working state of the damper, the inner wall section of the lower cylinder is provided with multiple levels of gaps with different opening sizes, corresponding in parallel with the shear keys, used for fixing shear keys with different energy dissipation requirements, thereby realizing the hierarchical activation of the shear keys and the energy dissipation requirements.
[0018] (3) through the electric heating wire arranged in the upper cylinder, the temperature in the cavity of the upper cylinder can be added by the electric heating wire, and the SMA compression gasket can be quickly restored in shape at the temperature of one end, so that the SMA compression gasket can be normally used in winter in a region with large temperature difference. BRIEF DESCRIPTION OF DRAWINGS
[0019] Fig. 1 A three-dimensional structure schematic diagram of the assembled hierarchical anti-seismic self-resetting metal damper is provided in the utility model;
[0020] Fig. 2 A structure schematic diagram of the SMA compression gasket, hierarchical buckle and other structures of the assembled hierarchical anti-seismic self-resetting metal damper is provided in the utility model;
[0021] Fig. 3 A structure schematic diagram of the sliding rod, connecting rod and other structures of the assembled hierarchical anti-seismic self-resetting metal damper is provided in the utility model;
[0022] Fig. 4 A structure schematic diagram of the shear key, multi-stage gap and other structures of the assembled hierarchical anti-seismic self-resetting metal damper is provided in the utility model;
[0023] Fig. 5 A structure schematic diagram of the base, fixed circular hole and other structures of the assembled hierarchical anti-seismic self-resetting metal damper is provided in the utility model;
[0024] Fig. 6 A structure schematic diagram of the electric heating wire, upper cylinder and other structures of the assembled hierarchical anti-seismic self-resetting metal damper is provided in the utility model.
[0025] In the drawing: 1, detachable outer cylinder; 2, connecting support device; 3, memory reset device; 4, metal energy dissipation damping device; 5, upper cylinder; 6, flange plate; 7, fixed bolt set; 8, lower cylinder; 9, cover plate; 10, base; 11, electric heating wire; 12, fixed circular hole; 20, end cap; 21, sliding rod; 22, connecting plate; 23, connecting rod; 30, SMA compression gasket; 31, hierarchical buckle; 40, shear key; 41, multi-stage gap. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0027] Embodiment 1: see Figs. 1-6 The utility model provides a technical scheme: a kind of can be assembled hierarchical anti-seismic self-resetting metal damper, including detachable outer tube 1;Detachable outer tube 1 is by upper cylinder 5, lower cylinder 8, cover plate 9 and base 10, lower cylinder 8 is fixedly installed above base 10, upper cylinder 5 is fixedly installed above lower cylinder 8, cover plate 9 is fixedly installed above upper cylinder 5, detachable outer tube 1 is equipped with connection support device 2, lower cylinder 8 is equipped with metal energy dissipation damping device 4, upper cylinder 5 is equipped with memory reset device 3, memory reset device 3 and metal energy dissipation damping device 4 are all arranged on connection support device 2, electric heating wire 11 is fixedly installed on the inner wall of upper cylinder 5, by the cooperation of memory reset device 3 and metal energy dissipation damping device 4, metal energy dissipation damping device 4 can consume vibration potential energy, memory reset device 3 will produce deformation when vibrating, under the action of memory reset device 3 after vibration, metal energy dissipation damping device 4 is reset by connection support device 2 drive;
[0028] In order to realize the function of automatic reset repair after the earthquake, the connecting and supporting device 2 includes a connecting plate 22, the upper surface of the connecting plate 22 is fixedly installed with a sliding rod 21, the sliding rod 21 is slidingly installed in the upper cylinder body 5, one end of the sliding rod 21 away from the connecting plate 22 is fixedly installed with an end cap 20, the end cap 20 is installed above the cover plate 9, the lower surface of the connecting plate 22 is fixedly installed with a connecting rod 23, the connecting rod 23 is a regular polygonal prism in cross-section profile, the memory reset device 3 includes SMA compression gaskets 30, the SMA compression gaskets 30 are nested on the sliding rod 21 in layers, a hierarchical buckle 31 is fixedly connected between each layer of the SMA compression gaskets 30, the SMA compression gaskets 30 are divided into three groups according to thickness, respectively corresponding to small, medium and large earthquake magnitude, the metal energy dissipation and vibration reduction device 4 includes shear keys 40, the shear keys 40 are flexibly selected in material, low yield point soft steel or shape memory alloy can be used to adapt to different engineering requirements and improve the performance of the damper, the shear keys 40 are fixedly installed on the connecting rod 23 in circumferential distribution, the shear keys 40 are arranged in groups at equal intervals along the axis direction of the connecting rod 23 on the outer wall thereof, the free edge of the shear key 40 is a concave circular arc, the middle section is minimized to preferentially trigger shear deformation, a multistage gap 41 is opened on the lower cylinder body 8, the multistage gap 41 is used to realize the hierarchical activation of the shear keys 40, cooperate with the pre-pressing state adjustment of the SMA compression gaskets 30, form a hierarchical anti-seismic mechanism of “elastic reset in small earthquake, controllable energy dissipation in medium earthquake, and extreme energy absorption in large earthquake”, one end of the shear key 40 is installed in the multistage gap 41, a fixed circular hole 12 is opened on the base 10, the detachable outer cylinder 1 is connected by the flange plate 6 and the fixed bolt sleeve 7 to be formed by the upper cylinder body 5, the lower cylinder body 8 and the cover plate 9, which is convenient for installation and maintenance, the sliding rod 21 penetrates through the center circular hole of the cover plate 9, the connecting plate 22 is fixed between the sliding rod 21 and the connecting rod 23 and is attached to the inner wall of the detachable outer cylinder 1, the SMA compression gaskets 30 are nested on the sliding rod 21, one end is connected to the inner side of the top of the upper cylinder body 5, and the other end is fixed on the connecting rod 23, the hierarchical buckle 31 is used to fix and adjust the pre-pressing state of the SMA compression gaskets 30, the shear keys 40 are arranged in groups at equal intervals along the outer wall of the connecting rod 23, one end is fixed on the outer wall of the connecting rod 23, and the other end is fixed in the multistage gap 41 on the inner wall of the lower cylinder body 8, the base 10 of the device has a fixed circular hole 12 in the center, through the fixed circular hole 12, the lower cylinder body 8 of the device can be fixed on the main structure of the building, such as the foundation or the floor, the end cap 20 of the device is designed to be firmly connected with another part of the structure of the building, such as the beam or the column, to ensure that the damper can reliably function when the earthquake occurs, under the action of the earthquake, the sliding rod 21 will slide in the detachable outer cylinder 1, driving the connecting plate 22 to slide along the inner wall of the cylinder, when the displacement of the sliding rod 21 exceeds the set threshold value, the corresponding shear key 40 will be activated and shear deformation will occur to absorb and dissipate energy, the SMA compression gasket 30 utilizes the shape memory effect to automatically restore to the original state after the earthquake, pulling the sliding rod 21 back to the initial position, when the device is installed in a city with large seasonal temperature differences,If the post-earthquake environment temperature is extremely low, the recovery speed of the SMA compression gasket 30 will be affected. At this time, the electric heating wire 11 can be powered to convert electrical energy into heat energy to heat the internal cavity of the upper cylinder 5. When the temperature of the internal cavity of the upper cylinder 5 rises, the SMA compression gasket 30 will enter the austenitic state, and at this time the material will recover to its pre-set shape.
[0029] Embodiment 2: as Figs. 1-2 and Fig. 4 In order to realize the function of post-earthquake maintenance by disassembling part of the components, flanges 6 are fixedly installed at both ends of the upper cylinder 5 and the lower cylinder 8. The upper cylinder 5 and the lower cylinder 8, the cover plate 9 and the lower cylinder 8, and the base 10 are fixedly connected through the flanges 6 and the fixed bolt sets 7. The post-earthquake inspection device is checked for damage to each component, especially the shear keys 40. If the shear keys 40 are found to be damaged, the damaged shear keys 40 can be replaced individually through the flanges 6 and the fixed bolt sets 7, without the need to disassemble the entire device. The remaining features are the same as in Embodiment 1.
[0030] The working principle is that: the detachable outer cylinder 1 is connected by flange 6 and fixing bolt set 7, which is convenient for installation and maintenance, the sliding rod 21 passes through the center hole of the cover plate 9, the connecting plate 22 is fixed between the sliding rod 21 and the connecting rod 23, and is attached to the inner wall of the detachable outer cylinder 1, the SMA compression gasket 30 is nested on the sliding rod 21, one end is connected to the top inner side of the upper cylinder body 5, and the other end is fixed on the connecting rod 23, the stepped buckle 31 is used for fixing and adjusting the pre-pressing state of the SMA compression gasket 30, the shear key 40 is arranged in groups along the outer wall of the connecting rod 23 at equal intervals, one end is fixed on the outer wall of the connecting rod 23, and the other end is fixed in the multi-stage gap 41 on the inner wall of the lower cylinder body 8, the center of the base 10 of the device has a fixed circular hole 12, through the fixed circular hole 12, the lower cylinder body 8 of the device can be fixed on the main structure of the building, such as the foundation or the floor, the end cap 20 of the device is designed to be firmly connected with another part of the structure of the building, such as the beam or the column, so that the damper can reliably play a role when the earthquake occurs, under the action of the earthquake, the sliding rod 21 will slide in the detachable outer cylinder 1, driving the connecting plate 22 to slide along the inner wall of the cylinder, when the displacement of the sliding rod 21 exceeds the set threshold, the corresponding shear key 40 will be activated and sheared, absorbing and dissipating energy, the SMA compression gasket 30 uses the shape memory effect to automatically restore to the original state after the earthquake, and the sliding rod 21 is pulled back to the initial position, the parts of the device are checked after the earthquake, especially whether the shear key 40 is damaged, if the shear key 40 is found to be damaged, the damaged shear key 40 can be replaced individually through the flange 6 and the fixing bolt set 7, without the need to remove the whole device, when the device is installed in a city with large seasonal temperature difference, if the environmental temperature is extremely low after the earthquake, the recovery speed of the SMA compression gasket 30 will be affected, at this time, the electric heating wire 11 can be powered on to convert electrical energy into heat energy to heat the internal cavity of the upper cylinder body 5, when the temperature of the internal cavity of the upper cylinder body 5 rises, the SMA compression gasket 30 will enter the austenite state, at this time, the material will restore to the pre-set shape.
[0031] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An assemblable hierarchical seismic self-centering metallic damper comprising a detachable outer cylinder (1); characterized in that: The detachable outer cylinder (1) is composed of an upper cylinder body (5), a lower cylinder body (8), a cover plate (9) and a base (10), the lower cylinder body (8) is fixedly installed above the base (10), the upper cylinder body (5) is fixedly installed above the lower cylinder body (8), the cover plate (9) is fixedly installed above the upper cylinder body (5), the detachable outer cylinder (1) is provided with a connecting and supporting device (2), the lower cylinder body (8) is provided with a metal energy dissipation damping device (4), the upper cylinder body (5) is provided with a memory reset device (3), the memory reset device (3) and the metal energy dissipation damping device (4) are both arranged on the connecting and supporting device (2), and the electric heating wire (11) is fixedly installed on the inner wall of the upper cylinder body (5). The connecting and supporting device (2) comprises a connecting plate (22), a sliding rod (21) is fixedly installed on the upper surface of the connecting plate (22), the sliding rod (21) is slidingly installed in the upper cylinder body (5), an end cap (20) is fixedly installed at the end of the sliding rod (21) away from the connecting plate (22), the end cap (20) is installed above the cover plate (9), and a connecting rod (23) is fixedly installed on the lower surface of the connecting plate (22).
2. The deployable hierarchical seismic self-centering metallic damper according to claim 1, wherein: The connecting rod (23) is a regular polygonal prism in cross-sectional profile.
3. The deployable hierarchical seismic self-centering metallic damper according to claim 1, wherein: The memory reset device (3) comprises SMA compression gaskets (30), the SMA compression gaskets (30) are layered and nested on the sliding rod (21), and a stepped buckle (31) is fixedly connected between each layer of the SMA compression gaskets (30).
4. The deployable hierarchical seismic self-centering metallic damper according to claim 3, wherein: The SMA compression gaskets (30) are divided into three groups according to thickness, and correspond to small, medium and large earthquake levels respectively.
5. The deployable hierarchical seismic self-centering metallic damper according to claim 1, wherein: The metal energy dissipation damping device (4) comprises shear keys (40), the shear keys (40) are fixedly installed on the connecting rod (23) in a circumferential distribution mode, the shear keys (40) are arranged in groups at equal intervals on the outer wall of the connecting rod (23) along the axis direction of the connecting rod (23), and the free edge of the shear key (40) is a concave circular arc.
6. The deployable hierarchical seismic self-centering metallic damper according to claim 5, wherein: A multistage gap (41) is formed in the lower cylinder body (8), and one end of the shear key (40) is installed in the multistage gap (41).
7. The deployable hierarchical seismic self-centering metallic damper according to claim 1, wherein: Flange plates (6) are fixedly installed at both ends of the upper cylinder body (5) and the lower cylinder body (8), the upper cylinder body (5) and the lower cylinder body (8) and the cover plate (9), and the lower cylinder body (8) and the base (10) are fixedly connected through the flange plates (6) and fixed bolt sleeves (7).
8. The deployable hierarchical seismic self-centering metallic damper according to claim 1, wherein: A fixed circular hole (12) is formed in the base (10).