A longitudinal-lateral displacement conversion and amplification type support structure, system and application

Abstract

The application discloses a longitudinal and transverse displacement conversion and amplification type support structure, which comprises an upper support plate, a lower support plate, a sliding block arranged between the upper support plate and the lower support plate, a first connecting structure for connecting a bridge and a second connecting structure for connecting a pier; a first sliding rail is arranged on the lower surface of the upper support plate, a second sliding rail is arranged on the upper surface of the lower support plate, a first sliding groove for being embedded with the first sliding rail is formed on the upper surface of the sliding block, a second sliding groove for being embedded with the second sliding rail is formed on the lower surface of the sliding block, and the first sliding groove and the second sliding groove are perpendicular to each other; the support structure can convert the transverse bridge displacement response under the action of an earthquake into longitudinal bridge displacement which is not sensitive to a track-bridge system, thereby improving the smoothness of a high-speed railway system under the earthquake; the longitudinal and transverse displacement amplification ratio is controllable and adjustable; the transverse seismic response of the high-speed railway bridge-track system can be significantly reduced, and the operation safety of a high-speed train can be effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of bridge vibration reduction and isolation technology, specifically to a longitudinal and transverse displacement conversion and amplification bearing structure, system, and its application. Background Technology

[0002] By the end of 2022, China's national railway operating mileage reached 155,000 kilometers, including 42,000 kilometers of high-speed rail, ranking first in the world. Due to my country's adoption of a fully enclosed design concept of "bridges instead of roads," high-speed railways have a large proportion of bridges. Furthermore, my country is located at the intersection of the Circum-Pacific Seismic Belt and the Eurasian Seismic Belt, experiencing widespread and frequent seismic activity. The extremely long high-speed rail network, the extremely high bridge ratio, and the frequent earthquakes mean that traffic on bridges during and after earthquakes is unavoidable. Therefore, ensuring the structural safety of high-speed railway bridges and the safety of traffic on them during and after earthquakes is of great significance. To meet the high standards of ride comfort required by high-speed railway systems, the vibration damping and isolation bearings commonly used on highway or ordinary railway bridges cannot be directly transplanted to high-speed railway bridges. It is necessary to develop new types of vibration damping and isolation bearings suitable for the characteristics of high-speed railway systems.

[0003] Therefore, this paper presents a displacement conversion and amplification bearing structure, system, and application that converts the weak lateral displacement of a high-speed railway bridge system into a strong longitudinal displacement under minor and moderate earthquakes, thereby limiting the lateral deformation of the high-speed railway. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this invention provides a displacement conversion and amplification bearing structure, system, and application that converts the weak-stiffness lateral displacement of a high-speed railway bridge system into a strong-stiffness longitudinal displacement under minor and moderate earthquakes, thereby limiting the lateral deformation of the high-speed railway.

[0005] First, the present invention provides a longitudinal and transverse displacement conversion and enlargement support structure, including an upper support plate, a lower support plate, a slider disposed between the two, a first connecting structure for connecting a bridge, and a second connecting structure for connecting a bridge pier; wherein, the lower surface of the upper support plate is provided with a first slide rail, the upper surface of the lower support plate is provided with a second slide rail, the upper surface of the slider is formed with a first slide groove for engaging with the first slide rail, and the lower surface is formed with a second slide groove for engaging with the second slide rail, wherein the first slide groove and the second slide groove are perpendicular to each other; The slider has a first circular hole for mounting a first connecting structure and a second circular hole for mounting a second connecting structure. The first and second circular holes are perpendicular to each other and staggered. The first connecting structure includes a first piston installed in the first circular hole, an upper connecting steel arm, and a first pin connecting the two. The second connecting structure includes a second piston installed in the second circular hole, a lower connecting steel arm, and a second pin connecting the two. The first and second circular holes are interconnected and filled with silicone oil or other transmission oil. The first and second pistons are respectively sealed to the first and second circular holes of the slider through multiple sealing rings and reciprocate with changes in oil pressure.

[0006] It also includes a limiting structure for limiting the sliding of the slider. The limiting structure includes two first slider baffles arranged parallel to the first slide rail and two second slider baffles arranged parallel to the second slide rail. The first slider baffles are fixed to the lower surface of the upper support plate by multiple bolts and are located on both sides of the slider to ensure that the slider slides along the first slide rail. The second slider baffles are fixed to the upper surface of the lower support plate by multiple bolts and are located on both sides of the slider to ensure that the slider slides along the second slide rail.

[0007] The first slide rail and the second slide rail have a "┰" shaped protruding structure, and the first slide groove and the second slide groove have corresponding concave structures.

[0008] The diameter of the second circular hole is R L The diameter of the first circular hole is R H ,and R L >R H； When lateral occurs D H When the displacement is longitudinal, D L Magnified into lateral displacement D H of By adjusting the round hole R L and R H The ratio of these values ​​allows for displacement amplification at different ratios.

[0009] The first connection structure further includes a beam connecting steel arm, which is connected to the outer end of the upper connecting steel arm via a first pin; the second connection structure further includes a pier connecting steel arm, which is connected to the outer end of the lower connecting steel arm via a second pin.

[0010] Secondly, the present invention provides a longitudinal and transverse displacement conversion and amplification bearing system, which includes several longitudinal and transverse displacement conversion and amplification bearing structures as described above, wherein at least two of the longitudinal and transverse displacement conversion and amplification bearing structures are symmetrically arranged between each pier and the bridge.

[0011] Furthermore, this invention provides an application of a longitudinal and transverse displacement conversion and amplification bearing structure, which is applied to a high-speed railway track-bridge system.

[0012] The support structure is installed between the main beam and the pier; wherein, the second circular hole is placed along the X direction of the transverse bridge, and the support structure is connected to the top of the pier through the second connecting structure; the first circular hole is placed along the Y direction of the longitudinal bridge, and the support structure is connected to the bottom of the main beam through the first connecting structure.

[0013] Finally, this invention provides a method for using a longitudinal and transverse displacement conversion and enlarged support structure, including: Install a support structure on the bridge pier and temporarily fix the support structure to the bridge pier; Erect the beam so that the beam and the support structure are in the preset relative position; Adjust the first and second connecting structures to their balanced positions; The first connecting structure is fixedly connected to the bridge pier, and the second connecting structure is fixedly connected to the bottom of the beam. Release the temporary fixed connection between the pier and the bearing structure to complete the installation of the bearing structure.

[0014] The specific method for adjusting the first and second connecting structures to the equilibrium position is as follows: using a hydraulic jack, push the upper connecting steel arm to the equilibrium position. Due to the connection effect, the lower connecting steel arm will automatically adjust to the equilibrium position.

[0015] The technical solution of this invention has the following advantages: The support structure provided by this invention allows the slider between the upper and lower support plates to counteract vertical tension while maintaining the integrity of the support, thus limiting vertical displacement, when the bridge undergoes longitudinal and lateral deformation. When lateral displacement occurs at the top of the pier, the displacement is transmitted to the second pin, the pier connecting steel arm, and the lower connecting steel arm. The silicone oil in the second circular hole inside the second piston and slider is then transmitted through the first circular hole to the first piston, the upper connecting steel arm, the beam connecting steel arm, and the first pin, finally applied longitudinally to the bottom of the main beam of the bridge, forcing the main beam to undergo longitudinal displacement. This achieves the conversion of longitudinal and lateral displacement, transforming the lateral displacement of the pier into the longitudinal displacement of the bridge, which in turn limits the lateral deformation of the entire high-speed railway track-bridge system.

[0016] The support structure provided by this invention proposes a longitudinal and lateral displacement conversion and amplification support, which can reduce the deformation of the high-speed railway line under seismic loading and improve the line smoothness during earthquakes. Since the transverse stiffness of the high-speed railway track-bridge system is usually much smaller than the longitudinal stiffness, the transverse direction is the more unfavorable direction. Under seismic loading, the transverse deformation is larger, which will affect the line smoothness. Therefore, this invention reduces the transverse movement and converts the transverse movement to the longitudinal movement, which is beneficial to the entire high-speed railway track-bridge system. That is, this invention, through the principle of connecting pistons, can convert the transverse displacement response of the bridge piers, which is highly dangerous under earthquakes, into longitudinal displacement that is insensitive to the track-bridge system. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the support structure described in this invention; Figure 2 This is a three-dimensional exploded view of the support structure described in this invention; Figure 3 This is a schematic diagram of the first connection structure described in this invention; Figure 4 This is a cross-sectional view of the slider described in this invention; Figure 5 This is a schematic diagram of the installation of the support structure described in this invention.

[0019] Reference numerals: 1-Upper support plate; 2-Lower support plate; 3-Slider; 4-Upper connecting steel arm; 5-Beam connecting steel arm; 6-First pin; 7-Lower connecting steel arm; 8-Pier connecting steel arm; 9-Second pin; 10-First slide rail; 11-First slider baffle; 12-Bolt; 13-First piston; 14-Second piston; 15-First circular hole; 16-Second circular hole; 17-First slide groove; 18-Sealing ring; 20-Second slide rail; 21-Second slider baffle; 27-Second slide groove. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following content is merely illustrative and explanatory of the concept of the present invention. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the inventive concept or exceed the scope defined by the claims, all of which should fall within the protection scope of the present invention. Unless otherwise specified, the experimental reagents and materials used in the following embodiments are commercially available. Example 1

[0021] like Figure 1 As shown, this embodiment provides a longitudinal and transverse displacement conversion and enlargement support structure, including an upper support plate 1, a lower support plate 2, a slider 3 disposed between the two, a first connecting structure for connecting the bridge and a second connecting structure for connecting the bridge pier; wherein, the lower surface of the upper support plate 1 is provided with a first slide rail 10, the upper surface of the lower support plate 2 is provided with a second slide rail 20, the upper surface of the slider 3 is formed with a first slide groove 17 for engaging with the first slide rail 10, and the lower surface is formed with a second slide groove 27 for engaging with the second slide rail 20, the first slide groove 17 and the second slide groove 27 are perpendicular to each other; The slider 3 has a first circular hole 15 for installing a first connecting structure and a second circular hole 16 for installing a second connecting structure. The first circular hole 15 and the second circular hole 16 are perpendicular to each other and staggered. The first connecting structure includes a first piston 13 installed in the first circular hole 15, an upper connecting steel arm 4, and a first pin 6 connecting the two. The second connecting structure includes a second piston 14 installed in the second circular hole 16, a lower connecting steel arm 7, and a second pin 9 connecting the two. The first circular hole 15 and the second circular hole 16 are interconnected and filled with silicone oil or other transmission oil. The first piston 13 and the second piston 14 are respectively sealed to the first circular hole 15 and the second circular hole 16 of the slider 3 through multi-layer sealing rings 18, and reciprocate with changes in oil pressure.

[0022] Furthermore, it also includes a limiting structure for limiting the sliding of the slider 3. The limiting structure includes two first slider baffles 11 arranged parallel to the first slide rail 10 and two second slider baffles 21 arranged parallel to the second slide rail 20. The first slider baffles 11 are fixed to the lower surface of the upper support plate 1 by multiple bolts 12 and are provided on both sides of the slider 3 to ensure that the slider 3 slides along the first slide rail 10. The second slider baffles 21 are fixed to the upper surface of the lower support plate 2 by multiple bolts 12 and are provided on both sides of the slider 3 to ensure that the slider 3 slides along the second slide rail 20.

[0023] Specifically, the first slide rail 10 and the second slide rail 20 have a "┰" shaped protruding structure, and the first slide groove 17 and the second slide groove 27 are corresponding concave structures.

[0024] Specifically, the diameter of the second circular hole 16 is R L The diameter of the first circular hole 15 is R H ,and R L >R H； When lateral occurs D H When the displacement is longitudinal, D L Magnified into lateral displacement D H of By adjusting the round hole R L and R H The ratio of these values ​​allows for displacement amplification at different ratios.

[0025] The first connection structure further includes a beam connecting steel arm 5, which is connected to the outer end of the upper connecting steel arm 4 by a first pin 6; the second connection structure further includes a pier connecting steel arm 8, which is connected to the outer end of the lower connecting steel arm 7 by a second pin 9.

[0026] In other words, the longitudinal and lateral displacement conversion and amplification support structure provided in this embodiment includes an upper support plate 1, a lower support plate 2, a slider 3, upper / lower connecting steel arms 7, beam / pier connecting steel arms 8, first / second pins 9, slide rails, slider baffles, bolts 12, first / second pistons 14, first / second circular holes 16, grooves, and sealing rings 18. A slider 3 is provided between the upper support plate 1 and the lower support plate 2, and the upper and lower surfaces of the slider 3 have grooves. The upper support plate 1 and the lower support plate 2 are equipped with slide rails; the slide rails and grooves cooperate to achieve directional sliding of the support structure. The upper support plate 1, the lower support plate 2, and the slider 3 baffle are connected by bolts 12, thereby achieving decoupling of the longitudinal and lateral movements of the support structure.

[0027] As attached Figure 3 As shown, the first pin 6 bolts the support to the steel arm 5 connecting the beam, transmitting only the longitudinal displacement of the bridge and not the lateral displacement; the second pin 9 bolts the support to the steel arm 8 connecting the pier, transmitting only the lateral displacement of the pier and not the longitudinal displacement.

[0028] As attached Figure 4As shown, the slider 3 has a first / second circular hole 16, which are interconnected and filled with a liquid such as silicone oil. The first piston 13 and the slider 3 are sealed together, and the first piston 13 reciprocates with changes in oil pressure. The first circular hole 15 and the second circular hole 16 are provided with a circular thin-walled structure, which limits the stroke of the first piston 13 and the second piston 14 to 40mm and 160mm, respectively. Example 2

[0029] This embodiment provides a longitudinal and transverse displacement conversion and amplification bearing system, which includes several longitudinal and transverse displacement conversion and amplification bearing structures as described in Embodiment 1, wherein at least two of the longitudinal and transverse displacement conversion and amplification bearing structures are symmetrically arranged between each pier and the bridge. Example 3

[0030] Based on Example 1, this example provides an application of a longitudinal and transverse displacement conversion and enlarged bearing structure, applying the longitudinal and transverse displacement conversion and enlarged bearing structure described in Example 1 to a high-speed railway track-bridge system.

[0031] The support structure is installed between the main beam and the pier; wherein, the second circular hole 16 is placed along the X direction of the transverse bridge, and the support structure is connected to the top of the pier through the second connecting structure; the first circular hole 15 is placed along the Y direction of the longitudinal bridge, and the support structure is connected to the bottom of the main beam through the first connecting structure.

[0032] As attached Figure 5 As shown, in use, the second circular hole 16 is positioned along the X-direction of the transverse bridge and connected to the top of the pier using the second pin 9. The first circular hole 15 is positioned along the Y-direction of the longitudinal bridge and connected to the bottom of the main beam using the first pin 6. When the bridge undergoes longitudinal and lateral deformation under vehicle loads and seismic action, the slider 3 between the upper support plate 1 and the lower support plate 2 can counteract the vertical tension while maintaining the integrity of the support, thereby limiting vertical displacement. When the top of the pier undergoes lateral displacement, the displacement is transmitted to the second pin 9, the pier connecting steel arm 8, and the lower connecting steel arm 7. Through the silicone oil in the second circular hole 16 inside the second piston 14 and the slider 3, it is transmitted through the first circular hole 15 to the first piston 13, the upper connecting steel arm 4, the beam connecting steel arm 5, and the first pin 6, finally applied longitudinally to the bottom of the main beam of the bridge, forcing the main beam to undergo longitudinal displacement. This achieves the conversion of longitudinal and lateral displacement, converting the lateral displacement of the pier into the longitudinal displacement of the bridge, which in turn limits the transverse deformation of the entire high-speed railway track-bridge system.

[0033] This invention targets high-speed railway systems, proposing a longitudinal and lateral displacement conversion and amplification bearing. This bearing reduces track deformation under seismic loads, improving track smoothness during earthquakes. Since the lateral stiffness of high-speed railway track-bridge systems is typically much lower than the longitudinal stiffness, the lateral direction is more unfavorable, resulting in greater lateral deformation under seismic loads, thus affecting track smoothness. Therefore, reducing lateral movement and converting it to longitudinal movement is beneficial to the entire high-speed railway track-bridge system. The new bearing proposed in this invention, through the principle of a connecting piston, can convert the lateral displacement response of bridge piers, which is highly dangerous under earthquakes, into longitudinal displacement that is insensitive to the track-bridge system. Example 4

[0034] Finally, this invention provides a method for using a longitudinal and transverse displacement conversion and enlarged support structure, the specific application steps of which include: Install a support structure on the bridge pier and temporarily fix the support structure to the bridge pier; Erect the beam so that the beam and the support structure are in the preset relative position; Adjust the first and second connecting structures to their balanced positions; The first connecting structure is fixedly connected to the bridge pier, and the second connecting structure is fixedly connected to the bottom of the beam; wherein, the bridge pier and the bottom of the beam can be pre-embedded with connecting parts, or directly fixed by drilling holes; Release the temporary fixed connection between the pier and the bearing structure to complete the installation of the bearing structure.

[0035] The specific method for adjusting the first and second connecting structures to the equilibrium position is as follows: using a hydraulic jack, the upper connecting steel arm is pushed to the equilibrium position, and due to the connection effect, the lower connecting steel arm will automatically adjust to the equilibrium position.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A support structure for longitudinal and transverse displacement conversion and amplification, characterized in that, It includes an upper support plate (1), a lower support plate (2), a slider (3) disposed between the two, a first connecting structure for connecting the bridge and a second connecting structure for connecting the bridge piers; the lower surface of the upper support plate (1) is provided with a first slide rail (10), the upper surface of the lower support plate (2) is provided with a second slide rail (20), the upper surface of the slider (3) is formed with a first slide groove (17) for engaging with the first slide rail (10), and the lower surface is formed with a second slide groove (27) for engaging with the second slide rail (20), the first slide groove (17) and the second slide groove (27) are perpendicular to each other; The slider (3) is formed with a first circular hole (15) for installing a first connecting structure and a second circular hole (16) for installing a second connecting structure. The first circular hole (15) and the second circular hole (16) are perpendicular to each other and staggered. The first connecting structure includes a first piston (13) installed in the first circular hole (15), an upper connecting steel arm (4), and a first pin (6) connecting the two. The second connecting structure includes a second piston (14) installed in the second circular hole (16), a lower connecting steel arm (7), and a second pin (9) connecting the two. The first circular hole (15) and the second circular hole (16) are interconnected and filled with silicone oil or other transmission oil. The first piston (13) and the second piston (14) are respectively sealed to the first circular hole (15) and the second circular hole (16) of the slider (3) through multi-layer sealing rings (18) and reciprocate with the change of oil pressure. The diameter of the second circular hole (16) is R L The diameter of the first circular hole (15) is R H ,and R L >R H； When lateral occurs D H When the displacement is longitudinal, D L Magnified into lateral displacement D H of By adjusting the round hole R L and R H The ratio of these values ​​allows for displacement amplification at different ratios. The first connection structure further includes a beam connecting steel arm (5), which is connected to the outer end of the upper connecting steel arm (4) by a first pin (6); the second connection structure further includes a pier connecting steel arm (8), which is connected to the outer end of the lower connecting steel arm (7) by a second pin (9).

2. The longitudinal and transverse displacement conversion and amplification support structure according to claim 1, characterized in that, It also includes a limiting structure for limiting the sliding of the slider (3). The limiting structure includes two first slider baffles (11) arranged parallel to the first slide rail (10) and two second slider baffles (21) arranged parallel to the second slide rail (20). The first slider baffles (11) are fixed to the lower surface of the upper support plate (1) by multiple bolts (12) and are located on both sides of the slider (3) to ensure that the slider (3) slides along the first slide rail (10). The second slider baffles (21) are fixed to the upper surface of the lower support plate (2) by multiple bolts (12) and are located on both sides of the slider (3) to ensure that the slider (3) slides along the second slide rail (20).

3. The longitudinal and transverse displacement conversion and amplification support structure according to claim 1, characterized in that: The first slide rail (10) and the second slide rail (20) have a "┰" shaped protruding structure, and the first slide groove (17) and the second slide groove (27) are corresponding concave structures.

4. A longitudinal and transverse displacement conversion and amplification support system, characterized in that, It includes several longitudinal and transverse displacement conversion and amplification bearing structures as described in any one of claims 1-3, wherein at least two of the longitudinal and transverse displacement conversion and amplification bearing structures are symmetrically arranged between each pier and the bridge.

5. An application of a longitudinal and transverse displacement conversion and enlarged support structure, characterized in that, The longitudinal and lateral displacement conversion and amplification support structure as described in any one of claims 1-3 is applied to the high-speed railway track-bridge system.

6. The application of the longitudinal and transverse displacement conversion and enlarged support structure according to claim 5, characterized in that, The support structure is installed between the main beam and the pier; wherein, the second circular hole (16) is placed along the X direction of the transverse bridge, and the support structure is connected to the top of the pier through the second connecting structure; the first circular hole (15) is placed along the Y direction of the longitudinal bridge, and the support structure is connected to the bottom of the main beam through the first connecting structure.

7. A method for using a support structure with longitudinal and transverse displacement conversion and amplification, characterized in that, Based on the longitudinal and transverse displacement conversion and amplification support system of claim 4, it includes: Install a support structure on the bridge pier and temporarily fix the support structure to the bridge pier; Erect the beam so that the beam and the support structure are in the preset relative position; Adjust the first and second connecting structures to their balanced positions; The first connecting structure is fixedly connected to the bridge pier, and the second connecting structure is fixedly connected to the bottom of the beam. Release the temporary fixed connection between the pier and the bearing structure to complete the installation of the bearing structure.

8. The method for using a longitudinal and transverse displacement conversion and enlargement support structure according to claim 7, characterized in that, The method for adjusting the first and second connecting structures to the equilibrium position is as follows: using a hydraulic jack, push the upper connecting steel arm to the equilibrium position. Due to the connection effect, the lower connecting steel arm will automatically adjust to the equilibrium position.

Images