A short-stroke, high-energy-consuming bridge bearing suitable for bridge engineering

Abstract

This invention provides a short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering. Self-resetting energy-dissipating dampers are symmetrically arranged between the upper and lower end plates. A force-transmitting cylinder is connected to the force-bearing end at its upper end and to a rotating plate at its bottom. A spiral metal sleeve is positioned at the center of the bottom of the rotating plate and the force-transmitting cylinder, with a spiral metal plate penetrating inside. The lower end of the spiral metal plate is connected to the lower end plate. Hydraulic linkage dampers are arranged parallel to the bridge width direction at both ends of the rotating plate. The two ends of the hydraulic linkage dampers are connected by a series of rods. An L-shaped rotating arm is rotatably connected between the middle of the series of rods and the angle on the rotating plate closest to the series of rods. A main friction band and several secondary friction bands are also connected to the outer side of the series of rods. When the force-bearing end is subjected to force, its up-and-down movement causes the hydraulic linkage dampers to compress and dissipate energy, resulting in energy dissipation through friction between the friction bands. The energy dissipation effect is maximized by requiring only a maximum rotation of 90° to 135° in the circular force-transmitting cylinder.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, and specifically to a short-stroke, high-energy-consuming bridge bearing suitable for bridge engineering. Background Technology

[0002] Bridge bearings are important components connecting the superstructure and substructure of a bridge. Located between the bridge and the bearing pad, they reliably transfer the loads and deformations (displacement and rotation) borne by the superstructure to the substructure, making them a crucial force transmission device for bridges.

[0003] Bridge bearings cannot undergo significant deformation due to bridge loads throughout the bridge's lifespan; otherwise, it could cause a height difference between the bridge abutments and ends, leading to adverse phenomena such as bridge approach slab settlement. This dictates that bridge bearings can only undergo a limited deformation stroke. However, this limited stroke often results in insufficient energy dissipation from the bridge bearings. Currently, the common approach is to arrange multiple bridge bearings that deform along the vertical direction. However, this method still has drawbacks: the upper and lower connecting end plates of individual bridge bearings are relatively large, and their spaced arrangement wastes a significant amount of space at the bridge's underside, resulting in a very limited overall energy dissipation capacity for the bridge bearings. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to propose a bridge bearing suitable for bridge engineering that can maximize overall energy consumption with a small compression deformation stroke.

[0005] Based on the above problems, the technical solution proposed in this invention is a short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering, comprising an upper end plate and a lower end plate that are parallel to each other, with a plurality of self-resetting energy-consuming dampers symmetrically arranged between the upper end plate and the lower end plate, an enlarged base set in the middle of the upper end plate, a circular force transmission cylinder rotatably connected between the middle of the enlarged base and the upper end plate, the upper end of the circular force transmission cylinder being connected to a force-bearing end located below the superstructure of the bridge, the bottom of the circular force transmission cylinder being connected to a rotating plate, a spiral metal sleeve set at the center of the bottom of the rotating plate and the circular force transmission cylinder, a spiral metal plate penetrating through the spiral metal sleeve, the lower end of the spiral metal plate being fixed on a lower base on the upper surface of the lower end plate, and the spiral metal plate being non-rotatable relative to the lower base.

[0006] Hydraulic linkage dampers are arranged at intervals at both ends of the rotating plate parallel to the width of the bridge. The two ends of the hydraulic linkage dampers are connected by series rods. L-shaped rotating arms are rotatably connected between the middle of the series rods and the two corners of the rotating plate near the series rods.

[0007] A vertical connecting rod is vertically installed on the tandem rod, and a first connecting arm is sleeved on the vertical connecting rod. The other end of the first connecting arm, away from the vertical connecting rod, is connected to a second connecting arm.

[0008] The two ends of the second connecting arm are respectively provided with first connecting members. A main friction belt is connected between the two opposing first connecting members. Multiple secondary friction belts are arranged in the direction perpendicular to the extension direction of the main friction belt. The two ends of the multiple secondary friction belts are connected to the second connecting member. The second connecting member is fixedly connected to the lower part of the upper end plate through the second end plate.

[0009] The circular force transmission cylinder has a cylindrical structure with an inner circular section at the upper opening. The inner circular section is connected to the inner wall of the circular force transmission cylinder through a bearing. The top of the inner circular section is connected to the force-bearing end. The middle part of the circular force transmission cylinder is connected to the upper end plate and the enlarged base through a bearing. The lower end extends between the upper end plate and the lower end plate.

[0010] Furthermore, the circular force transmission cylinder and the spiral metal plate generate relative axial movement as the force-bearing end moves, and the force transmission cylinder can rotate a maximum of 90°~135°.

[0011] Furthermore, the inner surface of the spiral metal sleeve does not completely overlap with the spiral metal sheet.

[0012] One end of the L-shaped rotating arm is rotatably connected to the rotating plate via the first connecting shaft, and the other end of the L-shaped rotating arm is sleeved on the vertical connecting rod perpendicular to the series rods.

[0013] The angles between the extended lines of the four sides of the rotating plate and the width direction of the bridge are 45° / 135°.

[0014] The second connecting arm extends in a direction perpendicular to the width of the bridge, while the first connecting arm extends in the same direction as the width of the bridge.

[0015] Multiple friction strips and the main friction strip have a woven structure, both of which are composed of a friction-resistant rubber material wrapped with an elastic alloy.

[0016] The first connector consists of a first end plate and two first clamping plates integrally formed therewith. A main friction band is sandwiched between the two first clamping plates and fixedly connected by through screws. The second connector consists of a second end plate and two second clamping plates integrally formed therewith. A secondary friction band is sandwiched between the two second clamping plates and fixedly connected by through screws. The first connector is integrally formed with the second connecting arm and the first connecting arm.

[0017] One of the series rods has a fixed sleeve fixedly connected to one end away from the L-shaped corner of the L-shaped rotating arm, and a third connecting arm is fixedly connected to the fixed sleeve facing the upper end plate.

[0018] Among them, a dovetail-shaped slide rail is fixedly connected to the lower surface of the upper end plate at a position opposite to the third connecting arm. A slider is provided inside the slide rail, and the slider is fixedly connected to the other end of the third connecting arm.

[0019] Advantages and beneficial effects of the present invention:

[0020] This application has multiple self-resetting energy dissipation dampers, two hydraulic linkage dampers, and a main friction belt that dissipates energy with multiple friction belts. Moreover, the above-mentioned energy dissipation effect can be maximized by only requiring the circular force transmission cylinder to rotate 90°~135°. Designers can use reasonable component design to ensure that this patent application maximizes the dissipation capacity with a small compression deformation stroke. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a partial cross-sectional schematic diagram of the present invention;

[0024] Figure 4 for Figure 3 A top-down structural diagram;

[0025] Figure 5 for Figure 3 A structural diagram from an upward perspective;

[0026] Figure 6 This is a schematic diagram showing the positional relationship between the circular force transmission cylinder and the upper end plate in this invention;

[0027] Figure 7 This is a cross-sectional view of the circular force transmission cylinder in this invention.

[0028] Figure 8 This is a schematic diagram showing the spatial relationship between the main friction band and the secondary friction band in this invention;

[0029] Figure 9 This is a top view of the structure composed of the main friction band and the secondary friction band in this invention;

[0030] Figure 10 This is a schematic diagram of the structure of the first connector and the second connector in this invention.

[0031] In the diagram: 1. Force-bearing end; 2. Circular force transmission cylinder; 3. Enlarged base; 4. Upper end plate; 5. Lower end plate; 6. Self-resetting energy-dissipating damper; 7. Lower base; 8. Spiral metal plate; 81. Spiral metal sleeve; 9. Hydraulic connecting rod damper; 91. First connecting arm; 92. First connecting piece; 922. Second connecting arm; 923. First end plate; 924. First clamping plate; 94. Second connecting piece; 943. Second end plate; 944. Second clamping plate; 95. Second friction belt; 96. Main friction belt; 10. Rotating plate; 11. L-shaped rotating arm; 12. First connecting shaft; 13. Series rod; 131. Vertical connecting rod; 14. Inner circular segment; 15. Fixed sleeve; 16. Third connecting arm; 17. Slide rail. Detailed Implementation

[0032] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0033] like Figures 1 to 10 As shown, a short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering includes an upper end plate 4 and a lower end plate 5 that are parallel to each other. Several self-resetting energy-dissipating dampers 6 are symmetrically arranged between the upper end plate 4 and the lower end plate 5, ensuring that the upper end plate 4 and the lower end plate 5 always maintain a translational tendency. An enlarged base 3 is disposed in the middle of the upper end plate 4, and a circular force transmission cylinder 2 is rotatably connected between the middle of the enlarged base 3 and the upper end plate 4. Figure 6 , Figure 7 As shown, the circular force transmission cylinder 2 is a cylindrical structure with an inner circular section 14 at the upper opening. The inner circular section 14 is connected to the upper part of the inner wall of the circular force transmission cylinder 2 through a bearing, and the top of the inner circular section 14 is connected to the force-bearing end 1 located below the superstructure of the bridge.

[0034] To ensure that the upper end plate 4 and the lower end plate 5 always move in translation, multiple X-shaped supports are set between the upper end plate 4 and the lower end plate 5.

[0035] The bottom of the circular force transmission cylinder 2 is connected to the rotating plate 10. The rotating plate 10 has a rectangular structure. The angle between the extended lines of the four sides of the rotating plate 10 and the width direction of the bridge is 45° / 135°. A spiral metal sleeve 81 is set at the bottom center of the rotating plate 10 and the circular force transmission cylinder 2. A spiral metal sheet 8 is inserted through the spiral metal sleeve 81. A lower base 7 is set on the top surface of the lower end plate 5. The spiral metal sheet 8 is fixedly connected to the lower base 7. The spiral metal sheet 8 cannot rotate relative to the lower base 7.

[0036] Parallel hydraulic linkage dampers 9 are arranged at intervals at both ends of the rotating plate 10, parallel to the width direction of the bridge. Both ends of the hydraulic linkage dampers 9 are connected by a series rod 13. The middle part of the series rod 13 is rotatably connected to two corners of the rotating plate 10 near the series rod 13 with an L-shaped rotating arm 11.

[0037] A vertical connecting rod 131 is vertically arranged on the series rod 13, and a first connecting arm 91 is sleeved on the vertical connecting rod 131. A second connecting arm 922 is connected to the end of the first connecting arm 91 away from the vertical connecting rod 131.

[0038] The two ends of the second connecting arm 922 are respectively provided with first connecting members 92. A main friction belt 96 is connected between the two opposing first connecting members 92. Multiple secondary friction belts 95 are arranged in the vertical direction of the main friction belt 96. The two ends of the multiple secondary friction belts 95 are connected to the second connecting member 94. The second connecting member 94 is fixedly connected to the lower part of the upper end plate 4 through the second end plate 943.

[0039] Among them, such as Figures 6 and 7 As shown, the outer middle part of the circular force transmission cylinder 2 is connected to the upper end plate 4 and the enlarged base 3 through a bearing, and the lower end extends to the space between the upper end plate 4 and the lower end plate 5.

[0040] Furthermore, the circular force transmission cylinder 2 and the spiral metal plate 8 move relative to each other along the axial direction as the force-bearing end 1 moves, and the circular force transmission cylinder 2 can rotate from 90° to 135°.

[0041] Furthermore, such as Figures 6 and 7 As shown, a spiral metal sleeve 81 is disposed in the circular force transmission cylinder 2 and the rotating plate 10. The circular force transmission cylinder 2 has a columnar structure, and the rotating plate 10 has a rectangular structure. The axis of the circular force transmission cylinder 2 passes through the intersection of the diagonals of the cross section of the rotating plate 10. The spiral metal sleeve 81 is fixedly disposed at the intersection of the axis of the circular force transmission cylinder 2 and the diagonal of the rotating plate 10.

[0042] Furthermore, the inner surface of the spiral metal sleeve 81 does not completely overlap with the spiral metal sheet 8, which makes the rotation between the two smoother.

[0043] One end of the L-shaped rotating arm 11 is rotatably connected to the rotating plate 10 via the first connecting shaft 12, and the other end of the L-shaped rotating arm 11 is sleeved on the vertical connecting rod 131, which is perpendicular to the series rod 13.

[0044] The second connecting arm 922 extends in a direction perpendicular to the width of the bridge, while the first connecting arm 91 extends in the same direction as the width of the bridge.

[0045] like Figure 3 , Figure 4 , Figure 5 , Figure 8 and Figure 9As shown, the multiple secondary friction bands 95 and the main friction band 96 have a woven structure, both composed of a layer of elastic alloy wrapped inside a layer of friction-resistant rubber material. During manufacturing, chamfers should be added to the corners of the elastic alloy to reduce stress concentration. Simultaneously, the elastic alloy material and the high-friction rubber material should be connected by ribs or screws on the outside of the elastic alloy material to enhance the overall integrity of the connection. The main friction band 96 and secondary friction bands 95 manufactured in this way have good elasticity, high strength, and are easy to process into a woven structure, facilitating frictional energy dissipation.

[0046] like Figure 10 As shown, the first connector 92 consists of a first end plate 923 and two first clamping plates 924 integrally formed therewith. A main friction belt 96 is sandwiched between the two first clamping plates 924 and fixedly connected by through screws. The second connector 94 consists of a second end plate 943 and two second clamping plates 944 integrally formed therewith. A secondary friction belt 95 is sandwiched between the two second clamping plates 944 and fixedly connected by through screws. The first connector 92 is integrally formed with the second connecting arm 922 and the first connecting arm 91.

[0047] like Figure 1 , Figure 2 As shown, a fixed sleeve 15 is fixedly connected to one end of a series rod 13 away from the L-shaped corner of the L-shaped rotating arm 11. A third connecting arm 16 is fixedly connected to the fixed sleeve 15 facing the upper end plate 4. A dovetail-shaped slide rail 17 is fixedly connected to the lower surface of the upper end plate 4 at a position opposite to the third connecting arm 16. A slider is provided inside the slide rail 17, and the slider is fixedly connected to the other end of the third connecting arm 16. The function of the slide rail 17 is to cooperate with the third connecting arm 16 to limit the translational direction of the series rod 13, so that the series rod 13 will not rotate, thereby ensuring that the two series rods 13 can only have a translational tendency of relatively approaching or moving away under the pull of the rotating plate 10.

[0048] When the superstructure of the bridge vibrates or deforms, the stressed end 1 tends to move downwards, causing the self-resetting energy-dissipating damper 6 to deform axially, ensuring that the upper end plate 4 moves closer to the lower end plate 5 and undergoes translational motion. The circular force transmission cylinder 2 and the spiral metal plate 8 then undergo relative axial motion, causing the circular force transmission cylinder 2 to rotate, which in turn drives the rotating plate 10 to rotate. The rotation of the rotating plate 10 causes the two series rods 13 to tend to move closer together, which in turn causes the hydraulic connecting rod damper 9 to compress and dissipate energy. During the translational motion of the two series rods 13, the first connecting arm 91 also tends to move in the same way. Since the second end plate 943 of the second connecting member 94 is directly fixed to the lower end face of the upper end plate 4, the position of the secondary friction band 95 does not change. At this time, the main friction band 96 dissipates energy through friction between the multiple secondary friction bands 95.

[0049] When the stressed end 1 experiences its maximum downward displacement, the rotating plate 10 also experiences its maximum angular displacement rotation. At this time, the top of the spiral metal sheet 8 must not contact the bottom surface of the inner circular segment 14. This is to prevent internal collisions from causing structural damage.

[0050] Similarly, when the force-bearing end 1 has an upward tendency to move, the circular force transmission cylinder 22 rotates back to its initial state, causing the first connecting arm 91 to have a tendency to return to its original position. Energy will also be dissipated between the main friction belt 96 and the multiple secondary friction belts 95.

[0051] The foregoing detailed one embodiment of the invention, however, is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering, comprising an upper end plate (4) and a lower end plate (5) that are parallel to each other, wherein a plurality of self-resetting energy-dissipating dampers (6) are symmetrically arranged between the upper end plate (4) and the lower end plate (5), characterized in that: An enlarged base (3) is set in the middle of the upper end plate (4). A circular force transmission cylinder (2) is rotatably connected between the middle of the enlarged base (3) and the upper end plate (4). The upper end of the circular force transmission cylinder (2) is connected to the force-bearing end (1) located below the upper structure of the bridge. The bottom of the circular force transmission cylinder (2) is connected to a rotating plate (10). A spiral metal sleeve (81) is set at the bottom center of the rotating plate (10) and the circular force transmission cylinder (2). A spiral metal sheet (8) is installed inside the spiral metal sleeve (81). The lower end of the spiral metal sheet (8) is fixed on the lower base (7) on the upper surface of the lower end plate (5). Hydraulic linkage dampers (9) are arranged at intervals at both ends of the rotating plate (10) parallel to the width direction of the bridge. The two ends of the hydraulic linkage dampers (9) are connected by a series rod (13). The middle part of the series rod (13) is rotatably connected to two corners of the rotating plate (10) near the series rod (13) with L-shaped rotating arms (11). A vertical connecting rod (131) is vertically arranged on the connecting rod (131), and a first connecting arm (91) is also sleeved on the vertical connecting rod (131). The other end of the first connecting arm (91) away from the vertical connecting rod (131) is connected to a second connecting arm (922). The two ends of the second connecting arm (922) are respectively provided with first connecting members (92), and a main friction belt (96) is connected between the two opposing first connecting members (92). Multiple secondary friction belts (95) are arranged in the direction perpendicular to the extension direction of the main friction belt (96). The two ends of the multiple secondary friction belts (95) are connected to the second connecting member (94). The second connecting member (94) is fixedly connected to the lower part of the upper end plate (4) through the second end plate (943). A fixed sleeve (15) is fixedly connected to one end of a series rod (13) away from the L-shaped corner of the L-shaped rotating arm (11). A third connecting arm (16) is fixedly connected to the fixed sleeve (15) facing the upper end plate (4). A dovetail-shaped slide rail (17) is fixedly connected to the lower surface of the upper end plate (4) at a position opposite to the third connecting arm (16). A slider is provided inside the slide rail (17), and the slider is fixedly connected to the other end of the third connecting arm (16).

2. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: The circular force transmission cylinder (2) is a cylindrical structure with an inner circular section (14) at the upper opening. The inner circular section (14) is connected to the inner wall of the circular force transmission cylinder (2) through a bearing. The top of the inner circular section (14) is connected to the force-bearing end (1). The middle part of the circular force transmission cylinder (2) is connected to the upper end plate (4) and the enlarged base (3) through a bearing. The lower end extends to the space between the upper end plate (4) and the lower end plate (5).

3. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: The circular force transmission cylinder (2) and the spiral metal plate (8) move relative to each other along the axial direction as the force-bearing end (1) moves, and the circular force transmission cylinder (2) can rotate up to 90°~135°.

4. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 3, characterized in that: The inner surface of the spiral metal sleeve (81) does not completely overlap with the spiral metal sheet (8).

5. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: One end of the L-shaped rotating arm (11) is rotatably connected to the rotating plate (10) through the first connecting shaft (12), and the other end of the L-shaped rotating arm (11) is sleeved on the vertical connecting rod (131) which is perpendicular to the series rod (13).

6. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: The angle between the extended lines of the four sides of the rotating plate (10) and the width direction of the bridge is 45° / 135°.

7. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: The extension direction of the second connecting arm (922) is perpendicular to the width direction of the bridge, while the extension direction of the first connecting arm (91) is the same as the width direction of the bridge.

8. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: Multiple friction strips (95) and main friction strips (96) have a woven structure, both of which are composed of a friction-resistant rubber material wrapped with an elastic alloy.

9. A short-stroke, high-energy-consumption bridge bearing suitable for bridge engineering according to claim 1, characterized in that: The first connector (92) consists of a first end plate (923) and two first clamping plates (924) integrally formed therewith. A main friction belt (96) is sandwiched between the two first clamping plates (924) and is fixedly connected by through screws. The second connector (94) consists of a second end plate (943) and two second clamping plates (944) integrally formed therewith. A secondary friction belt (95) is sandwiched between the two second clamping plates (944) and is fixedly connected by through screws. The first connector (92) is integrally formed with the second connecting arm (922) and the first connecting arm (91).

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