A lasso-type amplifying energy dissipation device with an angular displacement damper

Abstract

The present invention belongs to the technical field of building structure vibration control, and specifically relates to a lasso-type amplifying energy-dissipating device with an angular displacement damper, comprising a frame, an amplifying structure, a viscous damper, and an angular displacement damper; the amplifying structure is arranged on the diagonal of the frame; the angular displacement damper is arranged at the corner of the amplifying structure; one end of the viscous damper is hingedly connected to the angular displacement damper or the amplifying structure, and the other end is hingedly connected to the frame. The device of the present invention can be flexibly parameterized according to the actual engineering shock absorption needs, and the amplification multiple required by the actual engineering structure can be formulated. The installation is relatively simple and convenient, and has good structural stability and safety. It can be replaced relatively quickly after the earthquake without affecting the normal use of the main structure.

Description

Technical Field

[0001] The invention belongs to the technical field of building structure vibration control, and in particular relates to a lasso-type amplifying energy-dissipating device with an angular displacement damper. Background Art

[0002] At present, the destruction and collapse of multi-story buildings under strong earthquakes are caused by excessive inter-story displacement or yielding and buckling of the nodes of the structure, which causes the structural resilience to degrade and irreparable plastic damage. In order to solve the above problems, it is necessary to control the inter-story displacement and node damage of multi-story buildings. Setting up energy dissipation devices in the structure is a more convenient and effective method. Compared with the traditional structural seismic resistance method of strengthening the seismic performance of the structure itself to resist earthquakes, the energy dissipation and shock absorption technology that uses energy dissipation devices to generate deformation to dissipate the energy input into the structure by the earthquake to reduce the structure's earthquake response has the advantages of safety and economy.

[0003] Energy dissipation and vibration reduction technology is an important part of seismic isolation technology. Its main principle is that the building structure deforms under the action of an earthquake, and this deformation drives the damper to play a role, consuming the energy input by the earthquake and protecting the main structure. The greater the deformation of the damper, the more energy it dissipates and the better the energy dissipation effect.

[0004] However, for structures with greater rigidity, the deformation of the structure under horizontal load is small, so the energy dissipation device does not work or does not fully work, thereby reducing the shock absorption effect of the energy dissipation device. Therefore, it is necessary to use an energy dissipation device that can amplify the structural deformation. However, there are some problems with existing displacement amplification devices, such as: the displacement amplification effect is not obvious, and it is easy to become unstable out of the plane, etc., which makes the energy dissipation device unable to fully play its energy dissipation role.

[0005] The common angular displacement damper installed at the beam-column joint has a relatively small angular deformation and displacement deformation of the beam-column joint under the horizontal load, which leads to limited deformation displacement of the angular displacement damper and cannot fully exert its energy dissipation capacity, so the shock absorption effect is not ideal. In order to effectively improve the energy dissipation capacity of the damper, many domestic and foreign researchers have proposed different amplification connection forms, including diagonal support, herringbone support, upward toggle support, downward toggle support, reverse toggle support and scissors support, among which the toggle support form has the best amplification effect. Summary of the invention

[0006] In order to solve the above-mentioned technical problems, the present invention provides a lasso-type energy-dissipating device with an angular displacement damper. The energy-dissipating device connects the viscous damper with the node-type angular displacement damper and then is connected to the frame as a whole. It can amplify the displacement of the structure, increase the external displacement or angular load received by the damper, thereby enhancing the shock-absorbing effect and reducing the seismic response of the main structure.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a lasso-type amplifying energy dissipation device with an angular displacement damper, comprising a frame, an amplifying structure, a viscous damper, and an angular displacement damper; the amplifying structure is arranged on the diagonal of the frame; the angular displacement damper is arranged at the corner of the amplifying structure; one end of the viscous damper is hingedly connected to the angular displacement damper or the amplifying structure, and the other end is hingedly connected to the frame.

[0008] Preferably, the angular displacement damper comprises a middle rotating steel plate, two side constraint steel plates, a plurality of energy-absorbing rods, and two connecting steel plates; one end of the middle rotating steel plate is fixedly connected to one of the connecting steel plates, and the other end is suspended; the two side constraint steel plates are arranged in parallel, one end of the two side constraint steel plates is fixedly connected to the other connecting steel plate, and the other end is suspended; the middle rotating steel plate is located between the two side constraint steel plates; the energy-absorbing rods are evenly arranged between the two side constraint steel plates, and the middle part thereof passes through the middle rotating steel plate.

[0009] Preferably, the viscous damper and the angular displacement damper are respectively located on both sides of the amplifying structure, and one end of the viscous damper is hingedly connected to the amplifying structure via a pin.

[0010] Preferably, the angular displacement damper comprises a middle rotating steel plate, two side constraint steel plates, a plurality of energy-absorbing rods, and two connecting steel plates; the two side constraint steel plates are arranged in parallel, one end of one of the side constraint steel plates is fixedly connected to one of the connecting steel plates, and the other end is suspended; one end of the other side constraint steel plate is fixedly connected to the other connecting steel plate, and the other end is suspended; the middle rotating steel plate is located between the two side constraint steel plates; the energy-absorbing rods are evenly arranged between the two side constraint steel plates, and the middle part thereof passes through the middle rotating steel plate; holes are left on the middle rotating steel plate.

[0011] Preferably, the viscous damper and the angular displacement damper are located on the same side of the amplifying structure, and one end of the viscous damper is connected to the hole on the middle rotating steel plate through a pin.

[0012] Preferably, the outer surface of the energy-absorbing rod is in the form of a hyperbola, the cross-sectional diameter gradually increases from the middle to both ends, and the transition between the energy-absorbing section and the end connecting section is smooth.

[0013] Preferably, the middle rotating steel plate and the two side restraining steel plates are concentric sectors with equal radius.

[0014] Preferably, the intersection of two extension lines connecting the outer surfaces of the steel plates coincides with the center of the concentric sectors.

[0015] Preferably, the frame is composed of an upper beam, a left column, a lower beam and a right column connected in sequence to form a quadrilateral.

[0016] Preferably, the angular displacement damper is connected to the amplifying structure via a connecting member.

[0017] The technical effect of the present invention is that the present invention uses a combination of angular displacement dampers and viscous dampers to achieve a composite energy dissipation effect. In addition, the present invention uses a connecting rod mechanism to amplify the angular displacement damper, which can solve the problem that the angular displacement damper cannot fully exert its energy dissipation capacity when the interlayer displacement is small. Compared with the traditional installation method of a single damper, the structural form of this amplified energy dissipation device can greatly increase the external displacement or angular load borne by the damper, improve its overall energy dissipation effect, thereby reducing the number of dampers used and saving the shock absorption cost of the main structure.

[0018] The device of the present invention can be flexibly designed with parameters according to the actual shock absorption needs of the project, and the magnification required by the actual project structure can be formulated. The installation is relatively simple and convenient, and has good structural stability and safety. It can be replaced relatively quickly after an earthquake without affecting the normal use of the main structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a lasso-type amplifying energy dissipation device with an angular displacement damper in Example 1 of the present invention;

[0020] Figure 2 It is a schematic structural plane diagram of the angular displacement damper in Example 1 of the present invention;

[0021] Figure 3 A three-dimensional schematic diagram of an angle of the angular displacement damper in Embodiment 1 of the present invention;

[0022] Figure 4 A three-dimensional schematic diagram of the angular displacement damper in Embodiment 1 of the present invention from another angle;

[0023] Figure 5 It is a structural schematic diagram of a lasso-type amplifying energy dissipation device with an angular displacement damper in Example 2 of the present invention;

[0024] Figure 6 It is a schematic structural plan view of the angular displacement damper in Example 2 of the present invention.

[0025] Figure 7 A three-dimensional schematic diagram of an angle of the angular displacement damper in Embodiment 2 of the present invention;

[0026] Figure 8 A three-dimensional schematic diagram of the angular displacement damper in Embodiment 2 of the present invention from another angle;

[0027] In the figure: 1. frame; 2. viscous damper; 3. angular displacement damper; 4. amplification structure; 5. connecting piece;

[0028] 1-1, upper beam of the frame; 1-2, lower beam of the frame; 1-3, left column of the frame; 1-4, right column of the frame;

[0029] 3-1, first connecting steel plate; 3-2, second connecting steel plate; 3-3, middle rotating steel plate; 3-4, first side restraining steel plate; 3-5, second side restraining steel plate; 3-6, energy dissipation rod; 3-7, hole;

[0030] 4-1, first supporting rod; 4-2, second supporting rod. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] Example 1 Figure 1 As shown, a lasso-type amplifying energy dissipating device with an angular displacement damper according to the present invention comprises a frame 1, a viscous damper 2, an angular displacement damper 3, and an amplifying structure 4.

[0033] The frame 1 is composed of a frame upper beam 1-1, a frame lower beam 1-2, a frame left column 1-3 and a frame right column 1-4 connected to form a rectangular frame, and the vertices of the four corners of the frame are A, B, C, and D respectively. Figure 1 shown.

[0034] The enlarged structure 4 includes a first support rod 4-1 and a second support rod 4-2. One end of the first support rod 4-1 is hingedly connected to the frame 1 at point A, and one end of the second support rod 4-2 is hingedly connected to the frame 1 at point C. The other end of the first support rod 4-1 and the other end of the second support rod 4-2 are hingedly connected to one end of the viscous damper 2 at point E through a pin, so that the first support rod 4-1, the second support rod 4-2, and the viscous damper 2 can rotate around the pin. The other end of the viscous damper 2 is hingedly connected to the frame 1 at point B. Figure 1 As shown, the acute angle formed between the first support rod 4-1 and the frame upper beam 1-1 is There is an acute angle between the second support rod 4-2 and the right frame column 1-4 An acute angle is formed between the viscous damper 2 and the right column 1-4 of the frame, and the viscous damper 2 and the second supporting rod 4-2 are perpendicular to each other at a right angle.

[0035] The angular displacement damper 3 is arranged at the angle between the first support rod 4-1 and the second support rod 4-2 of the amplifying structure 4, and the angular displacement damper 3 is respectively connected and fixed to the first support rod 4-1 and the second support rod 4-2 through the connecting member 5. The connecting member 5 includes a steel plate with holes and bolts.

[0036] In this embodiment, the structure of the angular displacement damper 3 is as follows: Figure 2-4 As shown, the upper end of the middle rotating steel plate 3-3 is fixedly connected to the inner surface of the first connecting steel plate 3-1, and the lower end of the middle rotating steel plate 3-3 is suspended. The lower ends of the first side restraint steel plate 3-4 and the second side restraint steel plate 3-5 are fixedly connected to the inner surface of the second connecting steel plate 3-2, and the upper ends of the first side restraint steel plate 3-4 and the second side restraint steel plate 3-5 are suspended. The middle and both ends of the energy dissipation bar 3-6 pass through the reserved holes of the middle rotating steel plate 3-3 and the first side restraint steel plate 3-4 and the second side restraint steel plate 3-5, respectively, and are connected by nut fasteners at the end threads of the energy dissipation bar 3-6.

[0037] like Figure 2-4 As shown, the first side restraint steel plate 3-4, the second side restraint steel plate 3-5 and the middle rotating steel plate 3-3 are concentric sectors with the same radius, and the three are parallel to each other in space.

[0038] Since the angular displacement damper 3 is a symmetrical structure, the lower end of the middle rotating steel plate 3-3 may be fixedly connected to the inner surface of the second connecting steel plate 3-2, and the upper end of the middle rotating steel plate 3-3 may be suspended. The upper ends of the first side restraining steel plate 3-4 and the second side restraining steel plate 3-5 may be fixedly connected to the inner surface of the first connecting steel plate 3-1, and the lower ends of the first side restraining steel plate 3-4 and the second side restraining steel plate 3-5 may be suspended.

[0039] The outer surface of the energy dissipation rod 3-6 adopts a hyperbolic form, the cross-sectional diameter gradually increases from the middle to both ends, and the transition between the energy dissipation section and the end connection section is smooth.

[0040] like Figure 1 The lasso-type amplification energy dissipation device and its elbow-type arrangement shown in the figure work in the following way: when an earthquake or wind vibration occurs, the frame structure will produce relative inter-layer displacement, and the first support rod 4-1 and the second support rod 4-2 of the amplification structure 4 will produce an opening and closing movement around the axial pin, and the opening and closing movement will drive the viscous damper 2 to deform axially. In addition, the first support rod 4-1 of the amplification structure 4 drives the middle rotating steel plate 3-3 and the second support rod 4-2 drives the first side constraint steel plate 3-4 and the second side constraint steel plate 3-5 to move relative to each other, so that the angular displacement damper 3 enters the working state. Based on the small deformation theory, the angle can be magnified exponentially. As a result, the angular load on the angular displacement damper 3 becomes larger, giving full play to the energy dissipation capacity of the angular displacement damper 3, improving the shock absorption effect, and reducing the seismic response of the structure.

[0041] Example 2 Figure 5 As shown, another lasso type amplifying energy dissipation device of the present invention has a main structure that is basically the same as the lasso type amplifying energy dissipation device of Example 1, with the only difference being that the structure of the angular displacement type damper 3 and the connection relationship among the angular displacement type damper 3, the viscous damper 2 and the amplifying structure 4 are different from those of Example 1.

[0042] The structure of the angular displacement damper 3 of this embodiment is as follows: Figure 6-8 As shown, the lower end of the first side restraint steel plate 3-4 is connected to the inner surface of the second connecting steel plate 3-2, the upper end of the second side restraint steel plate 3-5 is connected to the inner surface of the first connecting steel plate 3-1, and a hole 3-7 is reserved on the middle rotating steel plate 3-3 for pin connection with the viscous damper 2. The connection method between the energy dissipation bar 3-6 and the middle rotating steel plate 3-3, the first side restraint plate 3-4, and the second side restraint plate 3-5 is the same as that of Example 1. The two ends of the middle rotating steel plate are not connected to the first connecting steel plate 3-1 and the second connecting steel plate 3-2, and both ends are in a suspended state.

[0043] Since the angular displacement damper 3 is a symmetrical structure, the upper end of the first side constraint steel plate 3-4 can be connected to the first connecting steel plate 3-1, and the lower end of the second side constraint steel plate 3-5 can be connected to the second connecting steel plate 3-2, which does not affect the function of the angular displacement damper 3.

[0044] The working principle of the lasso type amplification energy dissipation device in this embodiment is as follows: the axial deformation of the viscous damper 2 pulls the middle rotating steel plate 3-3 of the angular displacement type damper 3 to move, thereby driving the energy dissipation rod 3-6 to undergo plastic deformation. In addition, the first side constraint steel plate 3-4 is connected to the first support rod 4-1 of the amplification structure 4 through a connecting member 5, and the second side constraint steel plate 3-5 is connected to the second support rod 4-2 of the amplification structure 4 through a connecting member 5. When subjected to an external load, the angle between the first support rod 4-1 and the second support rod 4-2 of the amplification structure 4 will also change, so that the first side constraint steel plate 3-4 and the second side constraint steel plate 3-5 produce relative movement, thereby driving the energy dissipation rod 3-6 to move in multiple directions, producing plastic deformation, and dissipating the energy input by the external load.

[0045] The lasso-type energy-dissipating device provided by the present invention drives the viscous damper to undergo axial deformation by adopting a connecting rod mechanism amplifying device, thereby changing the angle between the viscous damper and the first supporting rod or the second supporting rod, and multiplying the inter-story displacement angle of the building structure at the angle where the angular displacement type damper is installed, so that the angular load borne by the angular displacement type damper is also multiplied accordingly, so that the deformation of the angular displacement type damper becomes larger, the energy dissipation capacity is stronger, and the shock absorption effect is better.

[0046] The energy dissipation capacity of the damper can be adjusted by adjusting the cross-sectional size, rod radius and the number of the angular displacement damper.

[0047] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. It should be noted that the above embodiments illustrate the present invention rather than limit the present invention, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims, or directly or indirectly apply them in other related technical fields, which are similarly included in the patent protection scope of the present invention.

Claims

1. A lasso-type amplifying energy dissipation device with an angular displacement damper, characterized in that: The invention comprises a frame, an amplifying structure, a viscous damper and an angular displacement damper; the amplifying structure is arranged on the diagonal of the frame; the angular displacement damper is arranged at the corner of the amplifying structure; one end of the viscous damper is hingedly connected to the angular displacement damper or the amplifying structure, and the other end is hingedly connected to the frame; the angular displacement damper comprises an intermediate rotating steel plate, two side restraining steel plates, a plurality of energy-absorbing rods and two connecting steel plates; one end of the intermediate rotating steel plate is fixedly connected to one of the connecting steel plates, and the other end is suspended; the two side restraining steel plates are fixedly connected to the connecting steel plates ... One end of the steel plate is fixedly connected to another connecting steel plate, and the other end is suspended; the middle rotating steel plate is located between the two side constraint steel plates; the energy-absorbing rod is evenly arranged between the two side constraint steel plates, and the middle part passes through the middle rotating steel plate; the viscous damper and the angular displacement damper are respectively located on both sides of the amplifying structure, and one end of the viscous damper is hingedly connected to the amplifying structure through a pin shaft; the outer surface of the energy-absorbing rod adopts a hyperbolic form, the cross-sectional diameter gradually increases from the middle to the two ends, and the transition between the energy-absorbing section and the end connecting section is smooth.

2. A lasso-type amplifying energy dissipation device with an angular displacement damper, characterized in that: The invention comprises a frame, an amplifying structure, a viscous damper and an angular displacement damper; the amplifying structure is arranged on the diagonal of the frame; the angular displacement damper is arranged at the corner of the amplifying structure; one end of the viscous damper is hingedly connected to the angular displacement damper or the amplifying structure, and the other end is hingedly connected to the frame; the angular displacement damper comprises a middle rotating steel plate, two side restraining steel plates, a plurality of energy-absorbing rods and two connecting steel plates; one end of one of the side restraining steel plates is fixedly connected to one of the connecting steel plates, and the other end is suspended; one end of the other side restraining steel plate is connected to the other side restraining steel plate. One connecting steel plate is fixedly connected, and the other end is suspended; the middle rotating steel plate is located between the two side constraint steel plates; the energy-absorbing rod is evenly arranged between the two side constraint steel plates, and the middle part passes through the middle rotating steel plate; a hole is left on the middle rotating steel plate; the viscous damper and the angular displacement damper are located on the same side of the amplification structure, and one end of the viscous damper is connected to the hole on the middle rotating steel plate through a pin shaft; the outer surface of the energy-absorbing rod adopts a hyperbolic form, the cross-sectional diameter gradually increases from the middle to the two ends, and the transition between the energy-absorbing section and the end connecting section is smooth.

3. The lasso type amplifying energy dissipation device with an angular displacement damper according to claim 1 or 2, characterized in that: The middle rotating steel plate and the two side restraining steel plates are concentric sectors with equal radius.

4. The lasso type amplifying energy dissipation device with an angular displacement damper according to claim 3, characterized in that: The intersection point of two extended lines connecting the outer surfaces of the steel plates coincides with the center of the concentric sectors.

5. The lasso type amplifying energy dissipation device with an angular displacement damper according to claim 1 or 2, characterized in that: The frame is connected in sequence by an upper beam, a left column, a lower beam and a right column to form a quadrilateral.

6. The lasso type amplifying energy dissipation device with an angular displacement damper according to claim 1 or 2, characterized in that: The angular displacement damper is connected to the amplifying structure through a connecting piece.

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