Bridge support
By using E-type energy-consuming parts to connect the slider and the end seat in the bridge support, using the relative sliding of the slider and the slide rail and the metal plastic hysteresis deformation of the energy-consuming section, the problem of the existing bridge support's shear bearing capacity and energy-consuming shock absorption effect in the cross-bridge direction is solved, and efficient energy-dissipation and shock absorption effect is achieved.
Patent Information
- Application Number
- CN202422256539.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The shear bearing capacity and energy-consuming shock absorption effect of existing bridge support in the cross-bridge direction are poor, and the viscous dampers are unevenly output at different speeds, making it difficult to effectively eliminate energy and shock absorption.
E-type energy-consuming parts are used to connect the slider and the end seat. The E-type energy-consuming parts include energy-consuming sections, middle connection sections and end connection sections. The relative sliding between the slider and the slide rail and the metal plastic hysteresis deformation of the energy-consuming sections is realized, adapting to the bridge displacement of the bridge and consuming cross-bridge vibration energy.
It realizes efficient energy-saving and shock absorption in the cross-bridge direction of the bridge, which can not only adapt to the bridge displacement of the bridge, but also consume vibration energy through metal plastic hysteresis deformation, improving the shear bearing capacity and energy dissipation effect of the bridge.
Smart Images
Figure CN223061436U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of energy dissipation and shock absorption, and particularly relates to a bridge bearing with good energy dissipation and shock absorption effect. Background Art
[0002] A bridge bearing is a structural component connecting a bridge and a pier, used to reliably transfer the load borne by the bridge to the pier. It is an important force transmission device. When transmitting loads, the bridge bearing needs to ensure that its own structure can deform under the action of factors such as live loads, temperature changes, and concrete shrinkage and creep, so as to avoid stress concentration and damage. Therefore, most existing bridge bearings are additionally equipped with viscous dampers to achieve deformation and recovery. However, the bearing capacity of the viscous damper is related to speed, and the output force is different at different speeds. It is suitable for the longitudinal direction of the bridge, and the effect is not good when set in the transverse direction of the bridge, making it difficult for such bridge bearings to achieve good shear bearing capacity and energy consumption in the transverse direction, and the energy dissipation and shock absorption effect is not good. Summary of the Utility Model
[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a bridge bearing with good energy dissipation and shock absorption effect.
[0004] To achieve the above purpose, the technical solution adopted by the utility model is a bridge bearing, including:
[0005] A base, the base is arranged on the top of the pier;
[0006] End seats, the end seats are arranged at the bottom of the bridge, and there are at least two end seats. The two end seats are arranged at intervals along the transverse direction of the bridge and symmetrically distributed on both sides of the base;
[0007] The base includes a slide rail extending along the longitudinal direction of the bridge and a slider slidably sleeved on the slide rail. The slider is connected to the end seat through an E-shaped energy dissipation member. The E-shaped energy dissipation member includes an energy dissipation section extending along the transverse direction of the bridge, a middle connection section vertically connected to the middle of the energy dissipation section, and end connection sections vertically connected to the ends of the energy dissipation section. The free end of the middle connection section is rotatably connected to the slider through a first rotating shaft, and the free end of the end connection section is rotatably connected to the end seat through a second rotating shaft. The first rotating shaft and the second rotating shaft extend vertically in the up and down direction.
[0008] Preferably, the E-shaped energy dissipation member is made of mild steel with a low yield point.
[0009] Preferably, the number of the E-shaped energy dissipation members is an even number, and the E-shaped energy dissipation members are arranged at intervals along the longitudinal direction of the bridge and symmetrically distributed on both sides of the slider.
[0010] Preferably, the part of the energy dissipation section between the middle connection section and the end connection section is in an elliptical or C-shaped with a hollow in the middle.
[0011] Preferably, an arc-shaped reinforcing rib is connected to a part of the energy-consuming section located between the middle connecting section and the end connecting section. The arc-shaped reinforcing rib is located below the energy-consuming section, and both ends of the arc-shaped reinforcing rib are respectively arranged close to the middle connecting section and the end connecting section.
[0012] Preferably, the first rotating shaft is arranged on the slider, and the second rotating shaft is arranged on the end head seat. A first through hole with an inner diameter larger than the outer diameter of the first rotating shaft is provided at the free end of the middle connecting section, and the first rotating shaft is inserted into the first through hole. A second through hole with an inner diameter larger than the outer diameter of the second rotating shaft is provided at the free end of the end connecting section, and the second rotating shaft is inserted into the second through hole.
[0013] Further preferably, a first notch for exposing the middle part of the first rotating shaft is formed on the side surface of the slider, and the free end of the middle connecting section is inserted into the first notch. A second notch for exposing the middle part of the second rotating shaft is formed on the side surface of the end head seat, and the free end of the end connecting section is inserted into the second notch.
[0014] Preferably, the end head seat is fixed to the bottom of the bridge.
[0015] Preferably, the bridge bearing further includes a seismic isolation bearing, and the seismic isolation bearing is fixed between the end head seat and the top of the bridge pier, or the seismic isolation bearing is arranged between the bottom of the bridge and the top of the bridge pier.
[0016] Preferably, speed locks are arranged on both sides of the base. The speed lock includes a cylinder barrel, a piston, and a piston rod. The cylinder barrel is fixed to the side surface of the slider facing the end head seat through a fork. The piston is slidably arranged in the cylinder barrel along the bridge longitudinal direction. The piston is fixedly connected to the piston rod. Both ends of the piston rod penetrate through the cylinder barrel and are connected to the fixing plate of the slide rail through limit blocks. Silicone oil is provided in the cylinder barrel. When the piston slides relative to the cylinder barrel, the silicone oil can be squeezed from one side of the piston to the other side.
[0017] Preferably, slotted forks are fixed on both sides of the slider. The forks pass through the piston rod and are in close contact with the cylinder barrel. The slider drives the cylinder barrel and the piston to slide relative to each other through the forks.
[0018] Due to the application of the above technical solutions, the present utility model has the following advantages compared with the prior art:
[0019] The bridge bearing provided by the utility model comprises a base arranged at the top of a bridge pier and an end seat arranged at the bottom of a bridge. There are at least two end seats, and these two end seats are arranged at intervals along the transverse direction of the bridge and symmetrically distributed on both sides of the base. By making the base include a slide rail extending along the longitudinal direction of the bridge and a slider slidably sleeved on the slide rail, the slider is connected to the end seat through an E-shaped energy dissipation member. The E-shaped energy dissipation member includes an energy dissipation section extending along the transverse direction of the bridge, a middle connection section vertically connected to the middle of the energy dissipation section, and end connection sections vertically connected to the ends of the energy dissipation section. The free end of the middle connection section is rotatably connected to the slider through a first rotating shaft, and the free end of the end connection section is rotatably connected to the end seat through a second rotating shaft. The first and second rotating shafts extend vertically in the up-and-down direction. It can not only utilize the relative sliding of the slider and the slide rail to adapt to the longitudinal displacement of the bridge, but also utilize the metal plastic hysteretic deformation of the energy dissipation section to consume the vibration energy in the transverse direction of the bridge, and has a good energy dissipation and shock absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a three-dimensional schematic diagram of Embodiment 1 of the utility model.
[0021] Figure 2 is Figure 1 the front view schematic diagram of
[0022] Figure 3 is Figure 2 the top view schematic diagram of
[0023] Figure 4 is Figure 2 the three-dimensional enlarged schematic diagram of the E-shaped energy dissipation member in
[0024] Figure 5 is Figure 1 the front view schematic diagram under the first installation method.
[0025] Figure 6 is Figure 1 the front view schematic diagram under the second installation method.
[0026] Figure 7 is a three-dimensional schematic diagram of Embodiment 2 of the utility model.
[0027] Figure 8 is a three-dimensional schematic diagram of Embodiment 3 of the utility model.
[0028] Figure 9 is Figure 8 the top view schematic diagram of
[0029] Figure 10 is Figure 9 the cross-sectional schematic diagram in the A-A direction of
[0030] Figure 11 is Figure 9Cross-sectional schematic view in the B-B direction.
[0031] Figure 12 It is a three-dimensional schematic view of the fourth embodiment of the present utility model.
[0032] Figure 13 Is Figure 12 Top view schematic diagram of
[0033] Figure 14 Is Figure 12 Three-dimensional enlarged schematic view of the E-shaped energy dissipation member in
[0034] Figure 15 Front view schematic diagram of the fifth embodiment of the present utility model.
[0035] Wherein: 1. Pier; 2. Bridge; 3. Seismic isolation bearing; 10. Base; 11. Slide rail; 12. Slide block; 121. First notch; 13. Fixed plate; 20. End head seat; 21. Second notch; 30. E-shaped energy consumption member; 31. Energy dissipation section; 32. Middle connection section; 321. First rotating shaft; 322. First through hole; 33. End connection section; 331. Second rotating shaft; 332. Second through hole; 34. Arc-shaped reinforcing rib; 40. Speed lock; 41. Cylinder barrel; 42. Piston; 43. Piston rod; 44. Limit block; 45. Silicon oil; 50. Fork. Specific implementation mode
[0036] The present utility model will be further described below in conjunction with the embodiments shown in the drawings.
[0037] Embodiment 1:
[0038] As Figures 1 to 6 shown, the bridge bearing provided by the present utility model includes: a base 10 and an end head seat 20. Among them, the base 10 is arranged on the top of the pier 1; the end head seat 20 is arranged at the bottom of the bridge 2. There are two end head seats 20, and these two end head seats 20 are arranged at intervals along the transverse direction of the bridge and symmetrically distributed on both sides of the base 10; the base 10 includes a slide rail 11 extending along the longitudinal direction of the bridge and a slide block 12 slidably sleeved on the slide rail 11. The slide block 12 is connected to the end head seat 20 through an E-shaped energy dissipation member 30. The E-shaped energy dissipation member 30 includes an energy dissipation section 31 extending along the transverse direction of the bridge, a middle connection section 32 vertically connected to the middle of the energy dissipation section 31, and an end connection section 33 vertically connected to the end of the energy dissipation section 31. The free end of the middle connection section 32 is rotatably connected to the slide block 12 through a first rotating shaft 321, and the free end of the end connection section 33 is rotatably connected to the end head seat 20 through a second rotating shaft 331. The first rotating shaft 321 and the second rotating shaft 331 extend vertically in the up and down direction.
[0039] The advantage of such a setting is that it can not only utilize the relative sliding between the slider and the slide rail to adapt to the longitudinal displacement of the bridge, but also utilize the metal plastic hysteretic deformation of the energy dissipation section to consume the vibration energy in the transverse direction of the bridge, achieving a good energy dissipation and shock absorption effect.
[0040] For the convenience of connection, in this embodiment, the first rotating shaft 321 is arranged on the slider 12, the second rotating shaft 331 is arranged on the end head seat 20, a first through hole 322 with an inner diameter larger than the outer diameter of the first rotating shaft 321 is provided at the free end of the middle connecting section 32, and the first rotating shaft 321 is inserted into the first through hole 322 to realize the rotation and vertical sliding of the first rotating shaft 321 relative to the E-shaped energy dissipation member 30. A second through hole 332 with an inner diameter larger than the second rotating shaft 331 is provided at the free end of the end connecting section 33, and the second rotating shaft 331 is inserted into the second through hole 332 to realize the rotation and vertical sliding of the E-shaped energy dissipation member 30 relative to the second rotating shaft 331, so as to adapt to the vertical displacement during the action process.
[0041] Furthermore, a first notch 121 for exposing the middle part of the first rotating shaft 321 is formed on the side surface of the slider 12, the free end of the middle connecting section 32 is inserted into the first notch 121, a second notch 21 for exposing the middle part of the second rotating shaft 331 is formed on the side surface of the end head seat 20, and the free end of the end connecting section 33 is inserted into the second notch 21.
[0042] To improve the deformation effect of the energy dissipation section 31, in this embodiment, the E-shaped energy dissipation member 30 is made of low yield point steel. Furthermore, the E-shaped energy dissipation member 30 is an integrally formed part. Furthermore, the part of the energy dissipation section 31 between the middle connecting section 32 and the end connecting section 33 is in an elliptical shape with a hollow middle, see Figure 4 .
[0043] To prevent out-of-plane instability during the deformation of the energy dissipation section 31, in this embodiment, an arc-shaped reinforcing rib 34 is connected to the part of the energy dissipation section 31 between the middle connecting section 32 and the end connecting section 33. The arc-shaped reinforcing rib 34 is located below the energy dissipation section 31, and both ends of the arc-shaped reinforcing rib 34 are respectively close to the middle connecting section 32 and the end connecting section 33.
[0044] To further improve the energy dissipation and shock absorption effect and achieve balance on both sides, in this embodiment, the number of E-shaped energy dissipation members 30 is an even number, and the E-shaped energy dissipation members 30 are arranged at intervals along the longitudinal direction of the bridge and symmetrically distributed on both sides of the slider 12.
[0045] There are two installation methods for this embodiment. The first one is as shown in Figure 5 , the seismic isolation bearing 3 is fixed between the end head seat 20 and the bridge pier 1; the second one is as shown in Figure 6 , the seismic isolation bearing 3 is fixed between the bridge 2 and the bridge pier 1.
[0046] Embodiment 2
[0047] As Figure 7 shown, Example 2 is basically the same as Example 1, except that in Example 2, the part of the energy-consuming section 31 between the middle connecting section 32 and the end connecting section 33 is not connected to the arc-shaped reinforcing rib.
[0048] Example 3
[0049] As Figures 8 to 11 shown, Example 3 is basically the same as Example 2, except that in Example 3, speed lockers 40 are provided on both sides of the base 10. The speed locker 40 includes a cylinder barrel 41, a piston 42, and a piston rod 43. The cylinder barrel 41 is fixed to the side of the slider 12 facing the end head seat 20 through a fork 50. The piston 42 is slidably arranged in the cylinder barrel 41 along the longitudinal direction of the bridge. The piston rod 43 is a double-headed piston rod. The piston 42 is connected to the piston rod 43. The two ends of the piston rod 43 penetrate through the cylinder barrel 41 and are connected to the fixing plate 13 of the slide rail 11 through a limit block 44.
[0050] The advantage of such a setting is that when the bridge vibrates longitudinally, the cylinder barrel 41 can be driven by the fork 50 fixed on the slider 12, so that a relative displacement is generated between the cylinder barrel 41 and the piston 42. On the one hand, it can achieve the purpose of energy dissipation and shock absorption and can better realize energy consumption. On the other hand, when the acceleration of the longitudinal displacement of the bridge increases, it can play a locking role, thus protecting the safety of the bridge structure.
[0051] Further, silicone oil 45 is provided in the cylinder barrel 41. When the piston 42 slides relative to the cylinder barrel 41, the silicone oil 45 can be squeezed from one side of the piston 42 to the other side, so as to dissipate the vibration energy by using the viscous shear force of the silicone oil 45 and improve the effect of energy dissipation and shock absorption.
[0052] Example 4
[0053] As Figures 12 to 14 shown, Example 4 is basically the same as Example 1, except that in Example 4, the part of the energy-consuming section 31 between the middle connecting section 32 and the end connecting section 33 is in a C shape bulging outwards, which makes the overall structure of the bridge bearing more concise. When the design displacement is small, this structure can be selected.
[0054] Example 5
[0055] As Figure 15 shown, Example 5 is basically the same as Example 2, except that in Example 5, there are four E-shaped energy-consuming members 30, and two are stacked in a group in the vertical direction. The two groups of E-shaped energy-consuming members 30 are arranged at intervals along the longitudinal direction of the bridge and are symmetrically distributed on both sides of the slider 12.
[0056] The bridge bearing provided by the utility model can not only adapt to the displacement of the bridge along the longitudinal direction of the bridge, but also adapt to the angular change of the bridge, as well as the undulation change of the bridge. It can also limit the transverse displacement of the bridge, and dissipate the vibration energy through the plastic deformation after the metal yields, so as to achieve the purpose of protecting the safety of the bridge structure. The structure is reasonable, the form is simple, the installation is convenient, the production cost is low, the economy is good, and the yield bearing capacity is high, and the energy that can be dissipated is large. After installation, no maintenance is required. After a large vibration occurs, only the E-shaped energy dissipation component needs to be replaced.
[0057] The above embodiments are only for illustrating the technical concept and characteristics of the present utility model, and the purpose is to enable those who are familiar with this technology to understand the content of the present utility model and implement it accordingly, and it cannot be used to limit the protection scope of the present utility model. All equivalent changes or modifications made according to the spirit and essence of the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A bridge bearing, comprising: A base, which is arranged on the top of the pier; End seats, which are arranged at the bottom of the bridge. There are at least two end seats, and these two end seats are arranged at intervals along the transverse direction of the bridge and symmetrically distributed on both sides of the base; It is characterized in that: The base includes a slide rail extending along the longitudinal direction of the bridge and a slider slidably sleeved on the slide rail. The slider is connected to the end seat through an E-shaped energy dissipation member. The E-shaped energy dissipation member includes an energy dissipation section extending along the transverse direction of the bridge, a middle connection section vertically connected to the middle of the energy dissipation section, and end connection sections vertically connected to the ends of the energy dissipation section. The free end of the middle connection section is rotatably connected to the slider through a first rotating shaft, and the free end of the end connection section is rotatably connected to the end seat through a second rotating shaft. The first rotating shaft and the second rotating shaft extend vertically in the up and down direction.
2. The bridge bearing according to claim 1, characterized in that: The E-shaped energy dissipation member is made of mild steel with a low yield point.
3. The bridge bearing according to claim 1, characterized in that: The number of the E-shaped energy dissipation members is an even number, and the E-shaped energy dissipation members are arranged at intervals along the longitudinal direction of the bridge and symmetrically distributed on both sides of the slider.
4. The bridge bearing according to claim 1, characterized in that: The part of the energy dissipation section between the middle connection section and the end connection section is in an elliptical or C-shaped with a hollow middle.
5. The bridge bearing according to claim 1, wherein: An arc-shaped reinforcing rib is connected to the part of the energy dissipation section between the middle connection section and the end connection section. The arc-shaped reinforcing rib is located below the energy dissipation section, and both ends of the arc-shaped reinforcing rib are respectively close to the middle connection section and the end connection section.
6. The bridge bearing according to claim 1, characterized in that: The first rotating shaft is arranged on the slider, the second rotating shaft is arranged on the end seat. A first through hole with an inner diameter larger than the outer diameter of the first rotating shaft is provided at the free end of the middle connection section, and the first rotating shaft is inserted into the first through hole. A second through hole with an inner diameter larger than the second rotating shaft is provided at the free end of the end connection section, and the second rotating shaft is inserted into the second through hole.
7. The bridge bearing according to claim 6, characterized in that: A first notch for exposing the middle part of the first rotating shaft is formed on the side surface of the slider, and the free end of the middle connection section is inserted into the first notch. A second notch for exposing the middle part of the second rotating shaft is formed on the side surface of the end seat, and the free end of the end connection section is inserted into the second notch.
8. The bridge bearing according to claim 1, wherein: The bridge bearing further includes a seismic isolation bearing, which is fixed between the end seat and the top of the pier, or the seismic isolation bearing is arranged between the bottom of the bridge and the top of the pier.
9. The bridge bearing according to claim 1, characterized in that: Speed locks are arranged on both sides of the base. The speed lock includes a cylinder barrel, a piston, and a piston rod. The cylinder barrel is arranged on the side surface of the slider facing the end seat. The piston is slidably arranged in the cylinder barrel along the longitudinal direction of the bridge. The piston is connected to the piston rod, and the end of the piston rod penetrates through the cylinder barrel and is connected to the fixing plate of the slide rail through a limit block. Silicone oil is provided in the cylinder barrel, and when the piston slides relative to the cylinder barrel, the silicone oil can be squeezed from one side of the piston to the other side.
10. The bridge bearing according to claim 9, characterized in that: Grooved fork-shaped members are fixed on both sides of the slider. The fork-shaped members pass through the piston rod and are in contact with the cylinder barrel. The slider drives the cylinder barrel and the piston to slide relative to each other through the fork-shaped members.