Self-resetting energy dissipation amplification damping device applied to bridge structure pier-beam

Abstract

The application provides a self-resetting energy dissipation amplification damping device applied to the pier beam of a bridge structure, which comprises an internal energy dissipation system arranged vertically, a reset system arranged horizontally and a force transmission chain rod; the top of the internal energy dissipation system is hinged to a pier lug plate fixed on the side wall of a pier, the bottom of the internal energy dissipation system is hinged to the lower part of the force transmission chain rod arranged obliquely, one end of the reset system is hinged to the pier lug plate, the other end of the reset system is hinged to a deck plate lug plate fixed on the lower surface of a deck plate, and the upper part of the force transmission chain rod is hinged to the deck plate lug plate. Compared with a traditional self-resetting support, the self-resetting energy dissipation amplification damping device has displacement and speed amplification functions, can effectively improve the energy dissipation capacity of the internal energy dissipation system, and is relatively independent of the reset system and the internal energy dissipation system, convenient to process and manufacture, and can realize independent replacement of damaged components after an earthquake.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil construction structure, in particular to a damping device between pier and beam, and especially to a self-resetting energy-dissipating amplification damping device applied between pier and beam of bridge structure. BACKGROUND

[0002] Under the action of earthquake, large relative displacement often occurs between pier and beam or between tower and beam of large-span bridge, and the excessive displacement often leads to collision between main beam and approach bridge, beam falling and excessive displacement of pier column. The existing damper attached between pier and beam often does not have self-resetting performance, and the energy-dissipating capacity is low, so that the main components of the bridge still need to absorb large seismic energy, which eventually leads to large plastic deformation or even collapse of the bridge structure, and the bridge structure is difficult to repair after the earthquake and cannot meet the normal use function, resulting in huge economic and property losses.

[0003] In recent years, damping devices and structural systems with self-resetting function have become a research hotspot in the field of engineering earthquake resistance, such as bridge structures with self-resetting supports and rocking piers with additional energy-dissipating devices. Such research can reduce the seismic response of the bridge structure to a certain extent and provide a reset force to the structure to reduce the residual deformation of the structure. At present, the structures with self-resetting supports in bridge engineering have the following defects: 1) the existing self-resetting supports often have low energy-dissipating capacity due to their reset performance, and the energy-dissipating capacity is greatly lost compared to the original support device; 2) the existing amplification damper devices often simply amplify the deformation capacity of the energy-dissipating device and do not have self-resetting capacity; 3) the existing self-resetting supports and amplification dampers often have complex structures and are not relatively independent, and need precise machining processes to be applied between the pier column or bridge tower and the main beam. That is, the self-resetting support often sacrifices the energy-dissipating performance of the support, although it reduces the residual displacement of the structure, but often leads to reduced acceleration response and energy-dissipating capacity of the structure, and cannot comprehensively consider the post-earthquake repair capacity and meet the energy-dissipating demand of the structure during the earthquake.

[0004] Therefore, a self-resetting energy-dissipating amplification damping device capable of improving the energy-dissipating capacity of the additional damping device of the bridge and reducing the residual deformation of the main structure is needed. SUMMARY

[0005] According to the above technical problem, a self-resetting energy-dissipating amplification damping device applied between pier and beam of bridge structure is provided. The present application aims to improve the energy-dissipating capacity of the additional damper of the bridge and reduce the relative displacement between the pier and the beam, and realizes reset through a reset system and improves the output displacement and speed of the internal energy-dissipating system based on the amplification mechanism to improve the energy-dissipating capacity of the additional internal energy-dissipating system, and reduce or even avoid the damage of the main structural components.

[0006] The technical means adopted by the present application are as follows:

[0007] A self-resetting energy dissipation amplification damping device applied to the pier beam of a bridge structure, comprising an internal energy dissipation system arranged vertically, a reset system arranged horizontally, and a force transmission chain rod;

[0008] The top of the internal energy dissipation system is hinged to a pier lug plate fixed on the side wall of the pier, the bottom of the internal energy dissipation system is hinged to the lower part of the obliquely arranged force transmission chain rod, one end of the reset system is hinged to the pier lug plate, the other end of the reset system is hinged to a deck lug plate fixed on the lower surface of the deck, and the upper part of the force transmission chain rod is hinged to the deck lug plate.

[0009] Preferably, a rotating device is further included, the rotating device comprising a rotating chain rod and a sleeve, the sleeve being sleeved on the force transmission chain rod and being in sliding connection with the force transmission chain rod, one end of the rotating chain rod being hinged to the pier lug plate and the other end being hinged to the sleeve.

[0010] Preferably, the internal energy dissipation system adopts a friction energy dissipation system.

[0011] Preferably, the internal energy dissipation system adopts a metal yield-prevention energy dissipation system.

[0012] Preferably, the internal energy dissipation system adopts a viscous damping energy dissipation system.

[0013] Preferably, the reset system adopts one or more combinations of SMA, combined disc springs, ring springs, and prestressed bars.

[0014] Preferably, the reset system adopts an elastic reset system.

[0015] Preferably, the reset system is longer than the internal energy dissipation system.

[0016] Preferably, the deck lug plate is fixed to the lower surface of the deck through a main beam connecting plate, the main beam connecting plate is fixed to the lower surface of the deck, and the deck lug plate is fixed to the side wall of the main beam connecting plate.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1. The present application has displacement and speed amplification functions compared with traditional self-resetting supports, and can effectively improve the energy dissipation capacity of the internal energy dissipation system.

[0019] 2. The selection of the internal energy dissipation system has diversity, i.e., single or composite energy dissipation mechanisms such as viscous energy dissipation, viscoelastic energy dissipation, friction energy dissipation, and yield-prevention dampers can be used.

[0020] 3. The shock control device reset system and internal energy dissipation system are relatively independent, easy to process and manufacture, and can realize independent replacement of damaged components after the earthquake.

[0021] Based on the above reasons, the application can be widely used in the field of shock absorption devices between pier beams and the like. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0023] Figure 1 The figure is a structural schematic diagram of a self-resetting energy dissipation amplification shock absorption device applied between pier beams of a bridge structure in the specific embodiment of the present application.

[0024] In the figure: 1, internal energy dissipation system; 2, rotating chain rod; 3, reset system; 4, force transmission chain rod; 5, main beam connecting plate; 6, bridge deck slab; 7, support; 8, bridge pier; 9, bridge pier ear plate; 10, bridge deck slab ear plate; 11, sleeve. DETAILED DESCRIPTION

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0027] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0028] The foregoing is considered as illustrative only of the principles of the application. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the application to the exact construction and practice described. Accordingly, all such variations are intended to be included within the scope of the present application as defined in the following claims, along with full equivalents thereof.

[0029] In the description of the present application, it is to be understood that the orientation terms such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "horizontal", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, which are merely for the convenience of describing and simplifying the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0030] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", etc. can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0031] In addition, it should be noted that the use of the terms "first", "second", etc. to define parts of components is merely for the convenience of distinguishing the corresponding parts of components, and the above terms have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0032] As Figure 1As shown, a self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams includes a vertically arranged internal energy-dissipating system 1, a horizontally arranged resetting system 3, a force-transmitting link 4, and a rotating device.

[0033] The top of the internal energy dissipation system 1 is hinged to the pier ear plate 9 fixed on the side wall of the pier 8, and a support 7 is provided between the pier 8 and the lower surface of the bridge deck 6. The bottom of the internal energy dissipation system 1 is hinged to the lower part of the inclined force transmission link 4. One end of the reset system 3 is hinged to the pier ear plate 9, and the other end is hinged to the bridge deck ear plate 10 fixed on the side wall of the main beam connecting plate 5. The main beam connecting plate 5 is fixedly connected to the lower surface of the bridge deck 6, and the upper part of the force transmission link 4 is hinged to the bridge deck ear plate 10.

[0034] The rotating device includes a rotating chain rod 2 and a sleeve 11. The sleeve 11 is fitted onto the force transmission chain rod 4 and is slidably connected to the force transmission chain rod 4. One end of the rotating chain rod 2 is hinged to the pier ear plate 9, and the other end is hinged to the sleeve 11.

[0035] The internal energy dissipation system 1 employs one or more combinations of traditional friction dampers, viscous dampers, or metal dampers. Alternatively, it may employ the friction energy dissipation system, metal anti-yield energy dissipation system, or viscous damping energy dissipation system described in patent ZL202110624716.9.

[0036] The reset system 3 adopts one or more combinations of SMA, combined disc spring, ring spring, and prestressed tendon. Alternatively, the reset system adopts the elastic reset system in ZL202011475604.3.

[0037] The reset system 3 is longer than the internal energy-dissipating system 1 and serves to amplify displacement and velocity. Amplification principle: as follows... Figure 1 As shown, according to theoretical mechanics, the longitudinal displacement u of the bridge deck 6 relative to the pier 8 is... b and the output displacement u of the internal energy dissipation system 1 d There are geometric relationships We can obtain: Therefore, the longitudinal velocity v of bridge deck 6 can be determined. b Vertical displacement v of internal energy dissipation system 1 d Relational expressions also exist. Therefore, the displacement amplification factor of the internal energy dissipation system 1 can be determined by adjusting the distance ratio between points AB and AC.

[0038] Working mechanism: Before loading, the initial pre-pressure or pre-tension is applied according to the specific reset material of the reset system 3, so that it has a reset force. Under the action of earthquake, the relative displacement occurs between the main beam, i.e. the bridge deck 6 and the pier 8, which is along the longitudinal direction of the bridge deck 6, and then the force chain rod 4 drives the internal energy dissipation system 1 to have vertical displacement under the constraint of the rotating chain rod 2 and the sleeve 11, which is the output and displacement output direction of the internal energy dissipation system 1. According to the amplification mechanism described above, the output displacement and speed of the internal energy dissipation system 1 will be amplified, and then the energy dissipation of the internal energy dissipation system 1 under the action of earthquake will be doubled. At the same time, the reset system 3 is compressed and deformed, and the reset force will be provided for the internal energy dissipation system 1 and the bridge deck 6 after the action of earthquake due to the existence of the reset force, so that they can restore the initial equilibrium position.

[0039] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that: they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams, characterized in that, This includes a vertically arranged internal energy dissipation system, a horizontally arranged reset system, and a force transmission link; The top of the internal energy dissipation system is hinged to the pier ear plate fixed on the side wall of the pier, the bottom of the internal energy dissipation system is hinged to the lower part of the inclined force transmission chain rod, one end of the reset system is hinged to the pier ear plate, the other end of the reset system is hinged to the bridge deck ear plate fixed on the lower surface of the bridge deck, and the upper part of the force transmission chain rod is hinged to the bridge deck ear plate. It also includes a rotating device, which includes a rotating chain rod and a sleeve. The sleeve is fitted onto the force-transmitting chain rod and is slidably connected to the force-transmitting chain rod. One end of the rotating chain rod is hinged to the pier ear plate, and the other end is hinged to the sleeve.

2. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The internal energy dissipation system adopts a friction energy dissipation system.

3. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The internal energy dissipation system adopts a metal anti-yield energy dissipation system.

4. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The internal energy dissipation system adopts a viscous damping energy dissipation system.

5. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The reset system employs one or more combinations of SMA, combined disc spring, ring spring, and prestressed tendon.

6. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The reset system is an elastic reset system.

7. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The reset system is longer than the internal energy-consuming system.

8. The self-resetting energy-dissipating and vibration-damping device applied between bridge piers and beams according to claim 1, characterized in that, The bridge deck ear plate is fixed to the lower surface of the bridge deck via the main beam connecting plate, the main beam connecting plate is fixed to the lower surface of the bridge deck, and the bridge deck ear plate is fixed to the side wall of the main beam connecting plate.

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