Double amplification energy consumption mechanism used between railway pier beams and railway

Abstract

The utility model discloses a double amplification energy consumption mechanism used between railway pier beams and a railway, comprising a rotation amplification device, one end of which is arranged at the bottom of a main beam and the other end of which is arranged on a pier; one end of the bridge-type amplifying device is connected with the rotary amplifying device, the other end of the bridge-type amplifying device is connected with a bridge pier lug plate, and the end of the bridge pier lug plate is arranged on the bridge pier; the self-resetting energy consumption damping device is arranged in the bridge type amplifying device; the self-resetting energy dissipation damping device comprises a self-resetting assembly and an energy dissipation assembly, and the self-resetting assembly and the energy dissipation assembly are of an integrated structure. According to the mechanism, through mutual cooperation of the rotation amplifying device, the bridge type amplifying device and the self-resetting energy dissipation damping device, the energy dissipation capacity of a bridge structure is improved, the relative displacement between a pier and a pier beam is reduced, structural resetting after an earthquake and energy consumption in the earthquake are achieved through self-resetting energy dissipation, damage to components of a bridge main body structure is avoided, and the service life of the bridge is prolonged. Damage control and post-earthquake function restorability of the bridge structure are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to railway bridge technical field, concretely relates to a double amplification energy dissipation mechanism for between railway pier beam and railway. BACKGROUND

[0002] With the continuous development of railway traffic, under the action of earthquake and various dynamic loads, large-span railway bridges often lead to large displacement and vibration of bridge structure, which causes large relative displacement between pier beam and tower beam, and excessive displacement leads to problems such as overturning of main beam, thereby affecting the service life and driving safety of the bridge. At present, the existing shock absorption and energy dissipation device has the following shortcomings when facing the complex load of railway bridge. First, the existing amplification damper device is insufficient in amplifying the deformation capacity of the energy dissipation device and does not have the ability of rapid energy dissipation and self-recovery. Second, the existing self-resetting support and amplification damper structure is complex and does not have integrity, and the installation is complicated. SUMMARY

[0003] The utility model aims at providing a double amplification energy dissipation mechanism for between railway pier beam and railway, to solve the technical defects that the existing shock absorption and energy dissipation device is insufficient in amplifying the deformation capacity of the energy dissipation device and does not have the ability of rapid energy dissipation and self-recovery, and the existing self-resetting support and amplification damper structure is complex and does not have integrity, and the installation is complicated.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme to achieve the above-mentioned purpose:

[0005] In the first aspect, a double amplification energy dissipation mechanism for between railway pier beam is provided, which comprises:

[0006] The rotating amplification device is arranged at one end of the main beam and at the other end of the pier;

[0007] The bridge amplification device is connected to the rotating amplification device at one end and has a pier ear plate at the other end, and the end of the pier ear plate is arranged on the pier;

[0008] The self-resetting energy dissipation damper device is arranged in the bridge amplification device; wherein the self-resetting energy dissipation damper device comprises a self-resetting component and an energy dissipation component, and the self-resetting component and the energy dissipation component are an integral structure.

[0009] Further, the rotating amplification device comprises a main beam ear plate, a rotating chain rod and a pier connecting plate, and the main beam ear plate is arranged at the bottom of the main beam;

[0010] The main beam lug is connected with the rotating chain link, the end of the rotating chain link is connected with the pier connecting plate and the bridge type amplification device, and the pier connecting plate is fixed to one side of the pier.

[0011] Further, the rotating chain link is axially coincident with the pier, and the pier connecting plate is axially perpendicular to the rotating chain link.

[0012] Further, the pier connecting plate is located above the bridge type amplification device.

[0013] Further, the bridge type amplification device comprises two groups of force transmission chain links, and the self-resetting energy dissipation device is arranged between the two groups of force transmission chain links.

[0014] One group of the force transmission chain links is connected with the rotating amplification device, and the other group of the force transmission chain links is connected with the pier lug.

[0015] Further, the number of the force transmission chain links in each group is two, and the force transmission chain links in each group are hingedly connected.

[0016] Further, the self-resetting component is one of a spring, a combined disc spring and a prestressed tendon.

[0017] Further, the energy dissipation component is a lead extrusion damping component.

[0018] Further, a support is further included, the support is arranged on the top of the pier, and the top end of the support is connected with the bottom of the main beam.

[0019] In the second aspect, a railway is provided, comprising rails, a main beam and a pier, the rails are arranged on the top of the main beam, the main beam is arranged on the top of the pier, and the double amplification energy dissipation mechanism as described above is installed between the main beam and the pier.

[0020] Compared with the prior art, the double amplification energy dissipation mechanism has the following beneficial effects:

[0021] 1、The double amplification energy dissipation mechanism improves the energy dissipation capacity of the bridge structure, reduces the relative displacement between the pier and the pier beam, realizes the structure reset and energy consumption after the earthquake through the self-resetting energy dissipation, avoids the damage of the main structure of the bridge, realizes the damage control and post-earthquake function recoverability of the bridge structure, solves the problem that the existing amplification type damper device has insufficient amplification of the deformation capacity of the energy dissipation device and does not have the ability of rapid energy dissipation and self-recovery, and simultaneously, since the self-resetting component and the energy dissipation component are an integral structure, the technical defect of complicated installation is solved.

[0022] 2. The rotating link is a key component connecting the main beam ear plate and the pier connecting plate. It can rotate to a certain extent when subjected to external excitation, which helps to reduce the rigid response of the structure under extreme conditions such as earthquakes or strong winds, thereby improving the overall flexibility of the structure. Through the rotation of the rotating link, the stress inside the structure can be more evenly distributed, avoiding structural damage caused by stress concentration.

[0023] 3. The rotating link is axially coincident with the pier, so that the force direction of the rotating link is consistent with the axial direction of the pier. It can ensure that the force borne by the rotating link can be directly transmitted to the pier under external excitation, avoiding the generation of additional bending moment or torque, thereby improving the overall stability of the structure and reducing the deformation and damage risk of the structure during the stress process.

[0024] 4. The pier connecting plate is located above, which can enhance the overall stability of the structure and improve the reliability and durability of the connection.

[0025] 5. The two groups of force transmission links help to disperse the stress generated by external excitation to a larger area, which not only reduces the stress of a single force transmission link, but also improves the carrying capacity of the entire structure. Moreover, by connecting the bridge amplification device with the rotating amplification device and the pier ear plate through the two groups of force transmission links, a more stable structural system can be formed, which helps to reduce the deformation and instability risk of the structure during the stress process. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 The first operation schematic diagram of the double-amplification energy dissipation mechanism between the railway pier and beam provided by the present application;

[0028] Figure 2 The second operation schematic diagram of the double-amplification energy dissipation mechanism between the railway pier and beam provided by the present application;

[0029] Figure 3 The schematic diagram of the self-resetting energy dissipation damping device in the double-amplification energy dissipation mechanism between the railway pier and beam provided by the present application;

[0030] Figure 4 The cross-sectional schematic diagram of the self-resetting energy dissipation damping device in the double-amplification energy dissipation mechanism between the railway pier and beam provided by the present application;

[0031] Figure 5The utility model provides a railway between the double amplification energy dissipation mechanism of pier beam bridge type amplification device mechanism schematic diagram;

[0032] 1, main beam; 2, main beam lug plate; 3, rotating chain link; 4, self-resetting energy dissipation damping device; 5, pier lug plate; 6, pier connecting plate; 7, pier; 8, support; 9, force transmission chain link; 10, lug plate; 11, sleeve; 12, lead extrusion cylinder; 13, shaft convex; 14, lead cavity seal; 15, stop block; 16, pressure receiving end plate; 17, spring; 18, extrusion shaft. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0035] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the embodiments of the utility model, it should be noted that if the orientation or position relationship indicated by the terms "upper", "lower", "horizontal", "inner" and the like is based on the orientation or position relationship shown in the drawings, or is the orientation or position relationship when the product of the invention is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0038] With the continuous development of railway transportation, under the action of earthquake and various dynamic loads, large-span railway bridges often lead to large displacement and vibration of the bridge structure, which causes large relative displacement between the pier beam and the tower beam, and excessive displacement easily leads to problems such as overturning of the main beam, thereby affecting the service life and driving safety of the bridge. At present, the existing damping energy dissipation device has the following shortcomings when facing the complex load of the railway bridge. First, the existing amplification type damper device is insufficient in amplifying the deformation capacity of the energy dissipation device and does not have the ability of rapid energy dissipation and self-recovery. Second, the existing self-centering support and amplification damper structure is complex and does not have integrity, and the installation is complicated.

[0039] In order to solve the above technical defects, the inventors provide a double-amplification energy dissipation mechanism for between railway pier beams and a railway.

[0040] The utility model will be described in further detail below with reference to the drawings. Embodiment one:

[0041] As shown in Figure 1 , Figure 3 , Figure 4 and Figure 5 , the utility model embodiment provides a double-amplification energy dissipation mechanism for between railway pier beams, comprising: a rotating amplification device, one end of which is arranged at the bottom of the main beam 1, and the other end is arranged on the bridge pier 7; a bridge type amplification device, one end of which is connected with the rotating amplification device, and the other end is connected with the bridge pier ear plate 5, and the end of the bridge pier ear plate 5 is arranged on the bridge pier 7; a self-centering energy dissipation damper device 4 arranged in the bridge type amplification device; wherein the self-centering energy dissipation damper device 4 comprises a self-centering assembly and an energy dissipation assembly, and the self-centering assembly and the energy dissipation assembly are an integral structure. The mechanism improves the energy dissipation capacity of the bridge structure through the cooperation of the rotating amplification device, the bridge type amplification device and the self-centering energy dissipation damper device, reduces the relative displacement between the bridge pier 7 and the pier beam, and realizes the post-earthquake structure resetting and energy consumption in the epicenter through the self-centering energy dissipation, avoids the damage of the main structure of the bridge, realizes the damage control and post-earthquake function recoverability of the bridge structure, solves the problem that the existing amplification type damper device is insufficient in amplifying the deformation capacity of the energy dissipation device and does not have the ability of rapid energy dissipation and self-recovery, and at the same time, since the self-centering assembly and the energy dissipation assembly are an integral structure, the technical defect of complicated installation is solved.

[0042] As shown in Figure 1As shown, the rotation amplification device includes a main beam ear plate 2, a rotating link 3, and a pier connecting plate 6. The main beam ear plate 2 is a triangular structure located at the bottom of the main beam 1. The main beam ear plate 2 is connected to the rotating link 3, and the end of the rotating link 3 is connected to the pier connecting plate 6 and the bridge amplification device. The pier connecting plate 6 is fixed to one side of the pier 7. The rotating link 3, as a key component connecting the main beam ear plate 2 and the pier connecting plate 6, can rotate to a certain extent when subjected to external excitation. This helps reduce the rigid response of the structure under extreme conditions such as earthquakes or strong winds, thereby improving the overall flexibility of the structure. The rotation of the rotating link 3 can more evenly distribute the stress within the structure, avoiding structural damage caused by stress concentration. Furthermore, since the rotation amplification device is connected to the bridge amplification device, they together constitute a dual amplification energy dissipation mechanism. Under external excitation, the rotation amplification device can amplify the displacement and deformation of the structure, thereby enhancing the energy dissipation effect of the bridge amplification device and the self-resetting energy dissipation damping device, thus improving the toughness of the structure and helping the bridge structure maintain its integrity and stability under extreme conditions.

[0043] like Figure 1 As shown, the rotating link 3 and the pier 7 are axially aligned, and the pier connecting plate 6 and the rotating link 3 are axially perpendicular. This ensures that the force direction of the rotating link 3 is consistent with the axial direction of the pier 7, guaranteeing that the force borne by the rotating link 3 under external excitation can be directly transmitted to the pier 7, avoiding additional bending moments or torques, thereby improving the overall stability of the structure and reducing the risk of deformation and damage during the stress process. Secondly, the axial perpendicularity between the pier connecting plate 6 and the rotating link 3 ensures that the connecting plate will not experience lateral displacement under stress, thus enhancing the stability and reliability of the connection and further improving the overall stability of the structure. In actual operation, the axial alignment of the rotating link 3 and the pier 7 allows the structure to form a clear force transmission direction under stress. This clear force transmission direction helps reduce stress concentration and deformation within the structure, improving the overall load-bearing capacity of the structure.

[0044] like Figure 1As shown, the pier connecting plate 6 is located above the bridge amplification device, and the pier connecting plate 6 located above can ensure that the force is transmitted from the pier 7 to the bridge amplification device more directly and efficiently, reducing the loss of force and the deformation of the structure. The bridge amplification device includes two groups of force transmission chain rods 9, and the self-resetting energy dissipation damping device 4 is arranged between the two groups of force transmission chain rods 9; one group of force transmission chain rods 9 is connected with the rotation amplification device, and the other group of force transmission chain rods 9 is connected with the pier lug plate 5, and the number of each group of force transmission chain rods 9 is two and hinged with each other. The two groups of force transmission chain rods 9 help to disperse the stress generated by external excitation to a larger area, which not only can reduce the stress of a single force transmission chain rod 9, but also can improve the bearing capacity of the whole structure. Moreover, by connecting the bridge amplification device with the rotation amplification device and the pier lug plate 5 through the two groups of force transmission chain rods 9, a more stable structural system can be formed, which helps to reduce the deformation and instability risk of the structure in the process of stress. At the same time, under extreme conditions such as earthquakes, the two groups of force transmission chain rods 9 and the self-resetting energy dissipation damping device 4 can work cooperatively to absorb and consume a large amount of energy, which helps to reduce the seismic response of the structure and protect the main structure from damage. When the external excitation ends, the self-resetting component can push the structure to return to the initial state, reducing the residual deformation of the structure.

[0045] In this embodiment, as shown in Figure 3 , the self-resetting component includes a pressure-bearing end plate 16, both ends of the pressure-bearing end plate 16 are provided with springs 17, the bottom of the spring 17 is provided with a stop block 15, the pressure-bearing end plate 16 and the spring 17 are arranged at one end of the sleeve 11; the energy dissipation component is a lead extrusion damping component, the lead extrusion damping component includes a lead-filled extrusion cylinder 12, the lead-filled extrusion cylinder 12 is arranged at the other end of the sleeve 11, the lead-filled extrusion cylinder 12 is provided with a shaft protrusion 13 and a lead cavity seal 14, and an extrusion shaft 18 is further arranged in the inside of the sleeve 11, the extrusion shaft 18 is arranged between the self-resetting component and the energy dissipation component, and the self-resetting component and the energy dissipation component are further provided with lug plates 10, which are used to connect with the bridge amplification device.

[0046] In this embodiment, the double amplification energy dissipation mechanism further includes a support 8, which is arranged at the top of the pier 7, and the top end of the support 8 is connected with the bottom of the main beam 1.

[0047] As shown in Figure 1 , according to the triangle rule, the longitudinal displacement x A of the main beam 1 relative to the pier 7 C and the movement displacement x AB of the extrusion shaft 18 of the self-resetting energy dissipation damping device 4 have a geometric relationship , and the displacement amplification coefficient K BC can be obtained as . Therefore, the displacement amplification coefficient can be adjusted by changing the lengths of L AB and L BC .

[0048] As shown in Figure 5Amplification factor of bridge amplifier: The bridge amplification mechanism has the following relationship: (Lcosc+a / 2) 2 +(Lsinc-d) 2 =L 2 Simplifying, we get: Therefore, the amplification factor of the bridge amplifier is: Therefore, the overall amplification factor of the dual amplification energy dissipation device

[0049] When a high-speed train passes or an earthquake occurs, a relative displacement occurs between the main beam 1 and the pier 7. This displacement is mainly along the longitudinal direction of the main beam 1, which in turn drives the rotating chain rod 3 to rotate around the hinge of the pier connecting plate 6. This causes the rotating chain rod 3 to compress or stretch the bridge amplification device, thereby driving the compression shaft 18 of the self-resetting damper 4 to move inside the sleeve 11. The relative displacement between the main beam 1 and the pier 7 is amplified twice by the rotating amplification device and the bridge amplification device, thereby multiplying the energy dissipation capacity and structural recovery capacity of the self-resetting energy dissipation system 4 under earthquakes and various dynamic loads, so that it can return to its initial equilibrium position.

[0050] Example 2, as Figure 2 As shown, unlike Embodiment 1, in this embodiment, there are two of each of the rotating amplification device, the bridge amplification device, and the self-resetting energy-dissipating damping device, and they are installed on opposite sides of the bridge pier 7.

[0051] Secondly, this embodiment provides a railway, including rails, a main beam, and piers. The rails are disposed on the top of the main beam, the main beam is disposed on the top of the pier, and the double amplification energy dissipation mechanism as described above is installed between the main beam and the pier.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit its protection scope. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading this utility model, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A double magnification energy dissipation mechanism for use between railway pier beams, characterized by, The application relates to a double-amplification energy dissipation mechanism for a bridge. The double-amplification energy dissipation mechanism comprises a rotation amplification device, one end of which is arranged at the bottom of a main beam (1) and the other end of which is arranged on a pier (7); a bridge-type amplification device, one end of which is connected with the rotation amplification device and the other end of which is connected with a pier lug plate (5), the end of the pier lug plate (5) being arranged on the pier (7); and a self-resetting energy dissipation damping device (4) arranged in the bridge-type amplification device, wherein the self-resetting energy dissipation damping device (4) comprises a self-resetting component and an energy dissipation component, and the self-resetting component and the energy dissipation component are an integral structure. The rotation amplification device comprises a main beam lug plate (2), a rotation chain rod (3) and a pier connecting plate (6), the main beam lug plate (2) being arranged at the bottom of the main beam (1). The main beam lug plate (2) is connected with the rotation chain rod (3), the end of the rotation chain rod (3) is connected with the pier connecting plate (6) and the bridge-type amplification device, and the pier connecting plate (6) is fixed on one side of the pier (7).

2. The dual magnification energy dissipation mechanism of claim 1, wherein, The rotation chain rod (3) is axially coincident with the pier (7), and the pier connecting plate (6) is axially perpendicular to the rotation chain rod (3). The pier connecting plate (6) is located above the bridge-type amplification device.

3. The dual magnification energy dissipation mechanism of claim 2, wherein, The bridge-type amplification device comprises two groups of force transmission chain rods (9), and the self-resetting energy dissipation damping device (4) is arranged between the two groups of force transmission chain rods (9).

4. The dual magnification energy dissipating mechanism of claim 2, wherein, One group of the force transmission chain rods (9) is connected with the rotation amplification device, and the other group of the force transmission chain rods (9) is connected with the pier lug plate (5).

5. The dual magnification energy dissipating mechanism of claim 1, wherein, Each group of the force transmission chain rods (9) comprises two force transmission chain rods which are hingedly connected with each other. The self-resetting component is one of a spring (17), a combined disc spring or a prestressed tendon.

6. The dual magnification energy dissipating mechanism of claim 5, wherein, The energy dissipation component is a lead extrusion damping component.

7. The dual magnification energy dissipating mechanism of claim 1, wherein, The double-amplification energy dissipation mechanism further comprises a support (8) arranged at the top of the pier (7), the top end of the support (8) being connected with the bottom of the main beam (1).

8. The dual magnification energy dissipating mechanism of claim 1, wherein, The main beam and the pier are provided with the double-amplification energy dissipation mechanism according to any one of claims 1-9.

9. The dual magnification energy dissipating mechanism of claim 1, wherein, ​ 10. A railway comprising a rail, a girder and a pier, the rail being provided on top of the girder, the girder being provided on top of the pier, characterized in that, ​

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