Silicone core plate type rubber seismic isolation bearing for large slope bridge and manufacturing method thereof

Abstract

The present invention relates to the technical field of bridge bearings, and specifically to a silicone core plate type rubber seismic isolation bearing for steep slope bridges and a manufacturing method thereof, wherein the silicone core plate type rubber seismic isolation bearing comprises a bearing body, wherein the bearing body comprises two sealing plates, and an elastic body formed by stacking rubber and stiffening plates is arranged between the two sealing plates, and a corrugated hole is arranged axially at the center of the elastomer, and a core body is arranged in the corrugated hole, and the core body is made of a non-Newtonian fluid silicone material, so that the core body exhibits plasticity and maintains a low-rigidity shear state when subjected to low-speed shear, and exhibits rigidity and maintains a high-rigidity shear and high-viscosity shock-absorbing state when subjected to high-speed shear. The silicone core plate type rubber seismic isolation bearing of the present invention has the advantages of safety, durability, and environmental protection, and can effectively prevent the beam of a steep slope bridge from sliding along the ramp direction, and is conducive to reducing the deformation requirements of the expansion joint of a steep slope bridge.

Description

Technical Field

[0001] The invention relates to the technical field of bridge bearings, and in particular to an organic silicon core plate type rubber seismic isolation bearing for a large-slope bridge and a manufacturing method thereof. Background Art

[0002] In the field of bridge engineering, especially in the construction of bridges with large slope changes such as large longitudinal slopes, large transverse slopes, and oblique curved slopes, bearings, as key components connecting the superstructure and substructure of the bridge, should have sufficient shear resistance and reset capacity to prevent the beam from sliding along the slope under the long-term and repeated braking force of the car, and avoid unbalanced force or loss of the bearings due to excessive deformation. Especially for long one-way highway bridges, the design of the bearings should pay more attention to their anti-slip stability; at the same time, it plays a vital role in improving the seismic performance of the bridge and ensuring the safety and stability of the bridge under extreme conditions.

[0003] At present, commonly used bearings mainly include lead core rubber isolation bearings and plate rubber bearings.

[0004] The plate rubber bearing is a composite rubber bearing made of alternating thin steel plates and thin rubber layers. This design not only utilizes the cushioning and shock-absorbing properties of rubber, but also significantly improves the vertical compression stiffness of the bearing through the constraint of the steel plate, effectively limits the vertical deformation of the rubber, and maintains good adaptability to its horizontal deformation. Despite this, when responding to lower horizontal forces such as automobile braking force, the composite rubber bearing may still produce significant deformation due to its own large flexibility, and lacks deformation reset ability in large-slope bridges, affecting its stability and reliability in practical applications. However, when the plate rubber bearing is subjected to displacement caused by temperature changes, wind force, etc. on large-slope bridges, its elasticity and recovery are relatively poor, and it is difficult to meet the longitudinal and lateral displacement requirements of the bridge. At the same time, under extreme loads such as earthquakes, the plate rubber bearing is prone to large deformation and shear failure, resulting in damage to the bridge structure or even collapse.

[0005] In order to further optimize the performance of seismic isolation bearings, lead rubber bearings came into being. Lead rubber bearings are composed of three parts: lead core, rubber and shell, forming a compact and efficient seismic isolation system. Among them, the lead core, as the main load-bearing component of the bearing, can undergo plastic deformation without breaking when subjected to external force due to its excellent plasticity, thereby achieving effective energy dissipation. At the same time, the rubber layer plays a role in buffering and shock absorption, further improving the shock absorption and noise reduction performance of the bearing. The shell fixes and protects the internal components, ensuring the stability and durability of the entire bearing structure. However, lead rubber seismic isolation bearings have the problem of easy aging and corrosion of the lead core, and its seismic performance is greatly reduced after long-term use; as a heavy metal, lead may cause environmental pollution during its production and use, which is not in line with the current green and environmentally friendly sustainable development concept; in order to improve the yield force and damping value of the bearing, it is often necessary to increase the lead core diameter, but an overly large center hole will also have an adverse effect on the overall performance of the bearing. Summary of the invention

[0006] The purpose of the present invention is to address the defects of the prior art and to provide a silicone core plate rubber seismic isolation bearing and a manufacturing method for large-slope bridges. The silicone core plate rubber seismic isolation bearing can effectively resist external horizontal loads under high-speed shear action, is suitable for large-slope bridges, and is beneficial to reducing the deformation requirements of expansion joints of large-slope bridges, preventing the beam from sliding along the ramp direction under long-term and repeated automobile braking force, and avoiding unbalanced force or emptying of the bearing due to excessive deformation.

[0007] In order to solve the above technical problems, in the first aspect, the present invention provides a silicone core plate type rubber seismic isolation bearing for steep slope bridges, comprising a bearing body, wherein the bearing body comprises two sealing plates and an elastomer, wherein the elastomer is fixedly arranged between the two sealing plates, a core hole is axially arranged at the center of the elastomer, a core body is arranged in the core hole, and the core body is made of non-Newtonian fluid silicone material, so that the core body exhibits plasticity and maintains a low stiffness shear state when subjected to low-speed shear, and exhibits rigidity and maintains a high stiffness shear and high viscosity shock absorption state when subjected to high-speed shear.

[0008] In some embodiments, the core is in a corrugated column shape and fits tightly with the elastomer.

[0009] Furthermore, the core body comprises a core column and a corrugated ring, the corrugated ring is sleeved on the outer wall of the core column, and the corrugated ring and the core column are an integrally formed structure.

[0010] Furthermore, the diameter of the core column is 1 / 10 of the width or diameter of the support body, the wave crest height of the corrugated ring is 1 / 3 of the diameter of the core column, and the wave pitch is the radius of the core column.

[0011] In some embodiments, an elastic support and shock absorbing device is disposed inside the core body, and two ends of the elastic support and shock absorbing device are respectively connected to two sealing plates.

[0012] In some embodiments, reinforcing fibers are added to the non-Newtonian fluid silicone material, and the content of reinforcing fibers in the non-Newtonian fluid silicone material should be less than 10% and be in a uniformly dispersed state.

[0013] In a second aspect, the present invention provides a method for manufacturing a silicone core plate type rubber seismic isolation bearing, comprising:

[0014] Assembling a template of the elastic body and installing a mold of the core body in the template of the elastic body;

[0015] forming an elastic body in the template;

[0016] removing the template and the mold;

[0017] Filling the core hole of the elastomer with non-Newtonian fluid silicone material and extruding it so that the non-Newtonian fluid silicone material completely fills the core hole to form a strong plastic core;

[0018] Embed the elastic support and shock absorbing device into the core;

[0019] The core body is cured and shaped to form a plastic core body;

[0020] Sealing plates are installed at the upper and lower ends of the elastic body, and the two ends of the elastic support and shock absorbing device are connected to the sealing plates by using fixing pieces.

[0021] In some embodiments, the mold includes a first mold unit and a second mold unit arranged in a stacked manner, a plurality of the first mold units are provided, the first mold unit includes a plurality of first plates, and the plurality of first plates are abutted end to end to form an annular structure, and at least one second mold unit is provided, the second mold unit includes a plurality of second plates, and the plurality of second plates are abutted end to end to form an annular structure with a waveform.

[0022] In some embodiments, after a plurality of the first plates are butted end to end to form an annular structure, a first notch is formed at the junction of two adjacent first plates, and the opening of the first notch faces the inner side of the annular structure; after a plurality of the second plates are butted end to end to form an annular structure with a waveform, a second notch is formed at the junction of two adjacent second plates, and the opening of the second notch faces the inner side of the annular structure with the waveform.

[0023] In some embodiments, grooves or protrusions are provided on the end surfaces of the first plate and the second plate, so that two adjacent first mold units, or two adjacent second mold units, or adjacent first mold units and second mold units stacked together are clamped together by the grooves and the protrusions.

[0024] In some embodiments, the method of filling the core hole of the elastomer with a non-Newtonian fluid silicone material and extruding the material includes: a filling speed of 10 mm / layer, an extrusion speed of 15 mm / min, and an extrusion pressure of 1.0 MPa.

[0025] In some embodiments, the method for curing and shaping the core body includes: modifying, catalyzing, and curing the core body in sequence, wherein the modification conditions are -25℃±0.5℃, pressurized at 4MPa, and for 2h; the catalytic conditions are 65℃±5℃, pressurized at 8MPa, and for 3h; the curing and shaping conditions are 90℃±1℃, pressurized at 2MPa, and for 2h.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention adopts a core made of non-Newtonian fluid silicone material and anchored to two sealing plates to replace the existing lead core. The core made of non-Newtonian fluid silicone material has the characteristics of showing plasticity and being in a low-rigidity shear state when subjected to low-speed shear, and showing high stiffness and high viscosity when subjected to high-speed shear. Under low-speed shear effects such as temperature deformation, the core does not affect the deformation of the elastomer. Under high-speed shear effects such as vehicle impact and earthquake, the core can effectively resist external horizontal loads, prevent large deformation and shear damage of the entire support, reduce the deformation requirements of large-slope bridge expansion joints, and also prevent the beam from sliding along the ramp direction under long-term and repeated automobile braking force, avoiding unbalanced force or emptying of the support caused by excessive deformation.

[0028] 2. The core of the present invention is in the shape of a corrugated column, so that the core and the elastic body can interact with each other, which is beneficial to improving the deformation resistance and shear resistance of the core, and is beneficial to improving the reset ability of the elastic body.

[0029] 3. The present invention arranges elastic support and shock absorbing devices inside the core body. When the support is subjected to low-speed shear, the elastic support and shock absorbing devices can bear the upper load together with the elastic body. When the support is subjected to high-speed shear, the elastic support and shock absorbing devices can resist the horizontal load together with the core body, further reducing the deformation of the support, and the elastic support and shock absorbing devices can assist the support in achieving horizontal resetting. In addition, both ends of the elastic support and shock absorbing devices are connected to the sealing plate, indirectly connecting the core body and the sealing plate. When stretching or misalignment occurs between the two sealing plates, the core body can anchor the sealing plate located above together with the elastic support and shock absorbing devices and the elastic body, reducing the movement of the upper beam, improving the integrity of the support body, and preventing large deformation shearing, separation of the sealing steel plate, etc. from occurring under extreme loads, which may lead to damage to the support, thereby forming a complete seismic isolation unit.

[0030] 4. The non-Newtonian fluid silicone material of the present invention has good environmental protection and seismic isolation advantages. The addition of laminated springs, reinforced fibers, etc. enables the core of the support to exert a certain shear resistance when subjected to low-speed shear, thereby enhancing the support's ability to reset and prevent beams from falling under low-speed shear.

[0031] 5. The mold of the core body of the present invention adopts a splicing structure, which is convenient for removing the mold from the core hole of the elastomer after the elastomer is formed. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 A top view of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of the core body and the elastic support and shock absorbing device of the present invention;

[0035] Figure 4 Schematic diagram of the present invention in use

[0036] Figure 5 is a top view of the first mold unit of the present invention;

[0037] Figure 6 for Figure 5 Middle AA section;

[0038] Figure 7 is a top view of the second mold unit of the present invention;

[0039] Figure 8 for Figure 7 Middle BB cross section.

[0040] Figure numerals: sealing plate 1; elastic body 2; stiffening plate 21; rubber body 22; core body 3; core column 31; corrugated ring 32; elastic support and shock absorbing device 4; first mold unit 5; first plate 51; first notch 52; second mold unit 6; second plate 61; second notch 62; convex strip 63; groove 7; protrusion 8; connecting plate 9; shear tenon 10; concrete beam 11; anchor rod 12; pad stone 13; pier 14; reinforcement rib 15. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0042] like Figure 1 , 2As shown, the present invention provides a silicone core plate type rubber seismic isolation bearing for a large slope bridge, comprising two sealing plates 1, the sealing plates 1 can be made of steel plates, an elastomer 2 is arranged between the two sealing plates 1, a core hole is arranged axially at the center of the elastomer 2, a core body 3 is arranged in the core hole, and the core body 3 is made of non-Newtonian fluid silicone material, so that the core body 3 exhibits plasticity when subjected to low-speed shear and maintains a plate-type rubber bearing in a low-rigidity shear state, and exhibits rigidity when subjected to high-speed shear and maintains a column core seismic isolation bearing in a high-rigidity shear and high-viscosity shock-absorbing state.

[0043] Among them, the elastomer 2 includes a rubber body 22 and a plurality of stiffening plates 21, the rubber body 22 and the plurality of stiffening plates 21 are coaxially arranged, the rubber body 22 is a cylindrical structure with a through hole in the center, the stiffening plates 21 are a circular plate structure with a through hole in the center, the plurality of stiffening plates 21 are arranged in parallel inside the rubber body 22, the plurality of stiffening plates 21 are evenly spaced along the axial direction of the rubber body 22, and the stiffening plates 21 are made of steel plates.

[0044] It should be noted that the above-mentioned low-speed shear condition refers to the situation where the force generated by reasons such as temperature changes acts on the core 3, and the high-speed shear condition refers to the situation where the force generated by reasons such as vehicle impact and earthquake acts on the core 3.

[0045] The non-Newtonian fluid silicone material of the present invention is a modified silicone rubber containing polyborosiloxane published in the Chinese invention application with application publication number CN116285373A. The modified silicone rubber containing polyborosiloxane has strong impact resistance and self-repairing performance. It can be understood that the present invention replaces the existing lead core with a core body 3 made of non-Newtonian fluid silicone material and anchored to two sealing plates. The non-Newtonian fluid silicone material has strong plasticity under low-speed shear conditions and is in a low-rigidity shear state. Under high-speed shear conditions, its viscosity rises sharply, showing high rigidity and high viscosity, and can effectively resist external horizontal loads, prevent large deformation and shear damage of the bearing, especially effectively protect the expansion joint of the large-slope bridge, reduce the deformation requirements of the expansion joint of the large-slope bridge, and also prevent the beam body from sliding along the ramp direction under the long-term repeated braking force of the car, and avoid the bearing force imbalance or emptying caused by excessive deformation.

[0046] In some embodiments, the core 3 is in a corrugated column shape and fits tightly with the elastic body 2. The corrugations on the core 3 may be spiral, wavy, etc., which can improve the shear resistance of the core 3.

[0047] Furthermore, the core body 3 includes a core column 31 and a corrugated ring 32, and the corrugated ring 32 is integrally sleeved on the outer wall of the core column 31. A plurality of corrugated rings 32 can be provided along the height direction of the core column 31. Figure 1Only one corrugated ring 32 is shown in the figure. The corrugated ring 32 should be arranged at the center of the core column 31 as much as possible, and it is not necessary to arrange it at the end. The cross section of the corrugated ring 32 can be semicircular or semi-elliptical. Compared with the core body 3 composed of only the core column 31, by arranging the corrugated ring 32 on the core column 31, when the support is subjected to shear force, the elastic body 2 will apply force to one side of the corrugated ring 32. Since the other side of the corrugated ring 32 is also a convex 8 structure, the other side of the corrugated ring 32 will squeeze the elastic body 2, so that the elastic body 2 will apply a reaction force to the other side of the corrugated ring 32, thereby reducing the shear force on the core column 31 where the corrugated ring 32 is arranged, which is conducive to improving the shear resistance of the core body 3.

[0048] Furthermore, the diameter of the core column 31 is 1 / 10 of the width or diameter of the support body, the wave crest height of the corrugated ring 32 is 1 / 3 of the diameter of the core column 31 , and the wave pitch is the radius of the core column 31 .

[0049] In order to further improve the stability of the silicone core plate rubber isolation bearing, Figure 3 As shown, in some embodiments, an elastic support and shock absorbing device 4 is disposed inside the core 3, and both ends of the elastic support and shock absorbing device 4 are respectively connected to two sealing plates 1. The elastic support and shock absorbing device 4 can be a laminated spring.

[0050] It can be understood that when the support is subjected to low-speed shear, the elastic support and shock-absorbing device 4 can bear the upper load together with the elastic body 2. When the support is subjected to high-speed shear, the elastic support and shock-absorbing device 4 can resist the horizontal load together with the core 3, further reducing the deformation of the support, and the elastic support and shock-absorbing device 4 can assist the support in achieving horizontal resetting; in addition, both ends of the elastic support and shock-absorbing device 4 are connected to the sealing board 1, indirectly connecting the core 3 and the sealing board 1. When stretching or misalignment occurs between the two sealing boards 1, the core 3 can anchor the upper sealing board 1 together with the elastic support and shock-absorbing device 4 and the elastic body 2 to reduce the movement of the upper beam.

[0051] In some embodiments, reinforcing fibers are added to the non-Newtonian fluid silicone material. The reinforcing fibers may be aramid fibers, steel fibers, or carbon fibers, and their content in the non-Newtonian fluid silicone material should be less than 10% and be in a uniformly dispersed state. By adding reinforcing fibers, when the support is subjected to low-speed shearing, the core 3 can also exert a certain shear resistance, thereby enhancing the anti-beam drop capability of the support under low-speed shearing.

[0052] In a second aspect, the present invention provides a method for manufacturing a silicone core plate type rubber seismic isolation bearing for a large slope bridge, comprising:

[0053] Assemble the template of the elastic body 2, and install the mold of the core body 3 in the template of the elastic body 2;

[0054] The elastic body 2 is manufactured in the template, that is, the rubber body 22 and the stiffening plate 21 are integrally cured in the template through a vulcanization process to form an integrated structure;

[0055] Removal of formwork and moulds;

[0056] The core hole of the elastomer 2 is filled with non-Newtonian fluid silicone material and extruded so that the non-Newtonian fluid silicone material completely fills the core hole to form a core body 3; in some embodiments, the filling speed is 10 mm / layer, the extrusion speed is 15 mm / min, and the extrusion pressure is 1.0 MPa.

[0057] Slowly rotate the elastic support and shock absorbing device 4 and embed it into the core 3;

[0058] The core body 3 is cured and shaped; in some embodiments, the method for curing and shaping the core body 3 includes: modifying, catalyzing, and curing and shaping the core body 3 in sequence, wherein the modification conditions are -25°C±0.5°C, pressurized at 4MPa, and the time is 2h; the catalytic conditions are 65°C±5°C, pressurized at 8MPa, and the time is 3h; the curing and shaping conditions are 90°C±1°C, pressurized at 2MPa, and the time is 2h.

[0059] Sealing plates 1 are installed at the upper and lower ends of the elastic body 2, and the two ends of the elastic support and shock absorbing device 4 are connected to the sealing plates 1 by fixing parts, wherein the fixing parts can be screws, and the elastic body 2 and the sealing plates 1 are fixedly connected by bolts.

[0060] Since the core 3 of the present invention has a corrugated ring 32, the mold needs to be removed after the elastomer 2 is cured and formed. If the mold is an integrated structure, it will be stuck in the core hole of the elastomer 2 and cannot be removed. Figures 5 to 8 As shown, in some embodiments, the mold includes a first mold unit 5 and a second mold unit 6 arranged in a stacked manner, and a plurality of first mold units 5 are provided, such as Figure 5 As shown, the first mold unit 5 includes a plurality of first plates 51, which are connected end to end to form an annular structure. The first plates 51 are arc-shaped structures, and a reinforcing rib 15 is arranged on the inner side thereof. The second mold unit 6 is provided with at least one Figure 7 As shown, the second mold unit 6 includes a plurality of second plates 61, which are butted end to end to form a ring structure with a corrugated shape. The second plates 61 are also in an arc-shaped structure, with reinforcing ribs 15 arranged on the inner side and an annular convex strip 63 arranged on the outer side. The convex strip 63 and the second plates 61 are an integral structure, and the outer peripheral surface of the convex strip 63 has the same shape as the outer peripheral surface of the corrugated ring 32, so that after the plurality of second plates 61 are butted end to end, the plurality of convex strips 63 are connected to form the shape of the corrugated ring 32.

[0061] When in use, the number of the first mold unit 5 and the second mold unit 6 is directly determined according to the height of the core body 3 and the number of the corrugated rings 32. Multiple first mold units 5 and second mold units 6 are stacked together and fixed on the template of the elastic body 2, so that the core hole can be formed after the elastic body 2 is cured. After the elastic body 2 is cured, the molds can be removed from the core hole piece by piece. The first mold unit 5 and the second mold unit 6 can be made of stainless steel and can be reused.

[0062] Since the elastic body 2 will squeeze the mold during the curing process, the two adjacent plates will be pressed against each other, and manual disassembly is relatively laborious, especially for the second plate 61, since the convex strip 63 of the second plate 61 will be restricted by the elastic body 2, it is inconvenient to disassemble. In order to improve the convenience of disassembly, in some embodiments, such as Figure 5 As shown, after the multiple first plates 51 are butted end to end to form an annular structure, a first notch 52 is formed at the butt joint of two adjacent first plates 51, and the opening of the first notch 52 faces the inner side of the annular structure, as shown in FIG. Figure 7 As shown, after a plurality of second plates 61 are butted end to end to form a corrugated annular structure, a second notch 62 is formed at the butt joint of two adjacent second plates 61, the opening of the second notch 62 faces the inner side of the corrugated annular structure, and the second notch 62 extends from the upper end of the second plate 61 along the inner wall of the convex strip 63 to the lower end of the second plate 61, that is, the adjacent two first plates 51 and the adjacent two second plates 61 can be butted in a line contact manner or in a small area contact manner. During the disassembly process of the first plate 51 and the second plate 61, there will be no or less squeezing by the adjacent first plate 51 and the adjacent second plate 61, which facilitates the disassembly of the first plate 51 and the second plate 61.

[0063] In some embodiments, Figure 6 , 8 As shown, grooves 7 or protrusions 8 are provided on the end faces of the first plate 51 and the second plate 61, so that two adjacent first mold units 5, or two adjacent second mold units 6, or adjacent first mold units 5 and second mold units 6 stacked together are clamped together by the grooves 7 and the protrusions 8.

[0064] The plurality of first plates 51 and the plurality of second plates 61 are clamped together by the grooves 7 and the protrusions 8, which improves the efficiency and accuracy of mold assembly. In addition, a limiting column can be provided on the template of the elastic body 2, so that the groove 7 of the bottom first mold unit 5 can be clamped on the limiting column, thereby ensuring the accuracy of the mold installation position on the template of the elastic body 2.

[0065] The silicone core plate type rubber seismic isolation bearing of the present invention can be used in the field of bridges, such as Figure 4As shown, the silicone core plate type rubber seismic isolation bearing is arranged between the concrete beam 11 and the pier 14 or the cap beam, and a pad stone 13 is arranged on the top of the pier 14, and the pad stone 13 is connected to the pier 14 by an anchor rod 12, and a connecting plate 9 is fixed on the pad stone 13 by the anchor rod 12, and the connecting plate 9 is made of steel plate, and the sealing plate 1 at the lower part of the silicone core plate type rubber seismic isolation bearing is fixedly connected to the connecting plate 9 by bolts and shear tenons 10, and the sealing plate 1 at the upper part of the silicone core plate type rubber seismic isolation bearing is fixedly connected to the connecting plate 9 at the bottom of the concrete beam 11 by bolts and shear tenons 10. The silicone core plate type rubber seismic isolation bearing of the present invention can also be used in the construction field, for example, for the roof support structure of a large venue, it can be used to connect the main structure and the roof, and provide the necessary displacement and rotation capabilities to adapt to temperature changes and load changes.

[0066] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A silicone core plate type rubber seismic isolation bearing for a large slope bridge, characterized in that: The support body comprises two sealing plates (1) and an elastic body (2), wherein the elastic body (2) is fixedly arranged between the two sealing plates (1), a core hole is arranged in the center of the elastic body (2) along the axial direction, a core body (3) is arranged in the core hole, and the core body (3) is made of a non-Newtonian fluid silicone material, so that the core body (3) exhibits plasticity and maintains a low-rigidity shear state when subjected to low-speed shearing, and exhibits rigidity and maintains a high-rigidity shear and high-viscosity shock-absorbing state when subjected to high-speed shearing; The core (3) is in the shape of a corrugated column and fits tightly with the elastic body (2); The core body (3) comprises a core column (31) and a corrugated ring (32); the corrugated ring (32) is sleeved on the outer wall of the core column (31); the corrugated ring (32) and the core column (31) are an integrally formed structure.

2. The silicone core plate type rubber seismic isolation bearing for a large slope bridge according to claim 1 is characterized in that: The diameter of the core column (31) is 1 / 10 of the width or diameter of the support body, the wave crest height of the corrugated ring (32) is 1 / 3 of the diameter of the core column (31), and the wave pitch is the radius of the core column (31).

3. The silicone core plate type rubber seismic isolation bearing for a large slope bridge according to claim 1 is characterized in that: An elastic support and shock absorbing device (4) is arranged inside the core (3), and two ends of the elastic support and shock absorbing device (4) are respectively connected to two sealing plates (1).

4. The silicone core plate type rubber seismic isolation bearing for a steep slope bridge according to claim 1, characterized in that: The reinforcing fibers are added to the non-Newtonian fluid organic silicon material, and the content of the reinforcing fibers in the non-Newtonian fluid organic silicon material should be less than 10%, and the reinforcing fibers should be in a uniformly dispersed state.

5. A method for manufacturing a silicone core plate type rubber seismic isolation bearing for a steep slope bridge according to any one of claims 1 to 4, characterized in that: include: Assembling a template of the elastic body (2), and installing a mold of the core body (3) in the template of the elastic body (2); making an elastic body (2) in the template; removing the template and the mold; Filling the core hole of the elastomer (2) with a non-Newtonian fluid organic silicon material and extruding the material so that the core hole is completely filled with the non-Newtonian fluid organic silicon material to form a strong plastic core (3); Embedding the elastic support and shock absorbing device (4) into the core body (3); The core body (3) is cured and shaped to form a plastic core body (3); Sealing plates (1) are installed at the upper and lower ends of the elastic body (2), and the two ends of the elastic support and shock absorbing device (4) are connected to the sealing plate (1) by means of fixing parts.

6. The method according to claim 5, characterized in that: The mold comprises a first mold unit (5) and a second mold unit (6) arranged in a stacked manner, wherein a plurality of the first mold units (5) are provided, the first mold units (5) comprise a plurality of first plates (51), and the plurality of the first plates (51) are butted end to end to form an annular structure, and at least one second mold unit (6) is provided, the second mold unit (6) comprises a plurality of second plates (61), and the plurality of the second plates (61) are butted end to end to form an annular structure with a waveform.

7. The manufacturing method according to claim 6, characterized in that: After a plurality of the first plates (51) are butted end to end to form an annular structure, a first notch (52) is formed at the butt joint of two adjacent first plates (51), and the opening of the first notch (52) faces the inner side of the annular structure; after a plurality of the second plates (61) are butted end to end to form an annular structure with a waveform, a second notch (62) is formed at the butt joint of two adjacent second plates (61), and the opening of the second notch (62) faces the inner side of the annular structure with a waveform.

8. The method according to any one of claims 5 to 7, characterized in that: The method for curing and shaping the core body (3) comprises: modifying, catalyzing, and curing the core body (3) in sequence; the modification conditions are -25°C±0.5°C, pressurized at 4MPa, and the time is 2h; the catalytic conditions are 65°C±5°C, pressurized at 8MPa, and the time is 3h; the curing and shaping conditions are 90°C±1°C, pressurized at 2MPa, and the time is 2h.

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