U-rib composite steel and rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge deck slab and use method

Abstract

The invention belongs to the technical field of bridge structures, and particularly relates to a U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for an orthotropic bridge deck slab and a using method, and the structure comprises two steel stress dispersion plates and a rubber stress dispersion plate clamped between the two steel stress dispersion plates as a rubber interlayer. The steel stress dispersion plate is of a groove-shaped plate-shaped structure with an opening in one face, and a strip-shaped groove is formed in the inner side of the groove-shaped plate-shaped structure of the steel stress dispersion plate in the vertical direction. The rubber stress dispersion plate is of a T-shaped structure formed by vertically and integrally connecting the middle of the bottom face of a transverse plate and a vertical plate, and strip-shaped convex ribs are symmetrically arranged on the two sides of the vertical plate. The two steel stress dispersion plates are buckled on the two sides of the vertical plate of the rubber stress dispersion plate, and each strip-shaped convex rib corresponds to and is matched with the strip-shaped groove of the corresponding steel stress dispersion plate. The bridge deck structure has excellent local vibration reduction performance and anti-fatigue performance, vibration and impact caused by vehicle loads can be effectively absorbed, and meanwhile fatigue damage caused by long-term vibration of the bridge deck structure is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge structures, and in particular relates to a U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks and a use method thereof. Background Art

[0002] Orthotropic bridge deck structures are widely used in modern bridge construction because of their high load-bearing capacity, excellent fatigue resistance and light weight. Orthotropic bridge deck structures are usually composed of steel plates, concrete and U-ribs, which can effectively withstand traffic loads and provide good stability. Although traditional bridge deck designs can meet basic load-bearing requirements, they have a large deadweight and are prone to cracks and damage after long-term use under high-frequency vibration and fatigue loads, thus affecting the durability and safety of the bridge.

[0003] At present, the structural optimization of orthotropic bridge decks mainly focuses on the reinforcement, vibration reduction and fatigue resistance of bridge decks. However, most existing bridge deck designs still focus on the combination of steel plates and concrete, lacking effective rubber composite materials, resulting in limited vibration reduction effects. In order to solve these problems, a new type of orthotropic bridge deck structure composed of steel plates and rubber materials has become an innovative direction, which can take into account strength, vibration reduction and fatigue resistance, and adapt to more complex engineering needs.

[0004] In recent years, in order to improve the local vibration reduction effect and fatigue resistance of bridge decks, the design concept of composite steel and elastic materials has gradually been applied to orthotropic bridge deck structures. Rubber materials have excellent performance in shock absorption and vibration isolation due to their good elasticity and vibration reduction properties. By sandwiching rubber interlayers between steel plates, the fatigue resistance of bridge decks can be greatly improved and bridge damage caused by vibration can be effectively reduced. Summary of the invention

[0005] In view of the problem that existing orthotropic bridge decks are prone to fatigue cracks and damage under high load and high vibration environments, the purpose of the present invention is to provide a U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks and a method of use. Through the design of composite steel plates and rubber interlayers, a dual combination of mechanical interlocking and chemical bonding is achieved, thereby significantly improving the bonding strength, overall stability and fatigue resistance of the structure.

[0006] The technical solution of the present invention is:

[0007] A U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks comprises two steel stress dispersion plates: a steel stress dispersion plate A and a steel stress dispersion plate B, and a rubber stress dispersion plate sandwiched therebetween as a rubber interlayer. The U-rib composite steel-rubber bridge deck rib stress dispersion plate protrudes from the steel stress dispersion plate through a transverse plate of the rubber stress dispersion plate to form a T-shaped structure composite stress dispersion plate, and is tightly fitted to the upper side of the U rib of the orthotropic bridge deck structure through the rubber stress dispersion plate.

[0008] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks, the orthotropic bridge deck structure includes an orthotropic bridge deck top plate, a U-rib composite steel-rubber bridge deck rib stress dispersion plate, an orthotropic bridge deck cross diaphragm and U ribs, the bottom of the orthotropic bridge deck top plate and the U ribs are an upper and lower integrated connection structure, the orthotropic bridge deck top plate is overlapped on the top of the orthotropic bridge deck cross diaphragm, the orthotropic bridge deck cross diaphragm is provided with an arc-shaped incision corresponding to the U rib, and the U-rib composite steel-rubber bridge deck rib stress dispersion plate is vertically installed on the inner side of the U rib of the orthotropic bridge deck structure.

[0009] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks has an arc-shaped incision that is a waist-shaped hole opened on the cross-diaphragm of the orthotropic bridge deck, and the top of the waist-shaped hole is an opening structure inclined outward, and the two sides of the U-rib are respectively matched with the side surfaces of the opening structure of the arc-shaped incision, and the bottom surface of the U-rib is located in the waist-shaped hole of the arc-shaped incision and a gap is left between the waist-shaped hole.

[0010] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks has a cross plate of the rubber stress dispersion plate that protrudes from the steel stress dispersion plate by 10 to 15 mm, and the cross plate forms an interference fit with the top of the U rib, achieving adaptive vibration reduction under dynamic load through pre-compression.

[0011] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthogonal anisotropic bridge decks comprises a steel stress dispersion plate which is a groove-shaped plate structure with an opening on one side, and a strip groove is provided vertically on the inner side of the groove-shaped plate structure of the steel stress dispersion plate; the rubber stress dispersion plate is a T-shaped structure vertically connected to the vertical plate in the middle of the bottom surface of the horizontal plate, and strip convex ribs are symmetrically arranged on both sides of the vertical plate; the groove surface of each steel stress dispersion plate matches with half of the vertical plate respectively, so that the two steel stress dispersion plates are buckled on both sides of the vertical plate of the rubber stress dispersion plate, and each strip convex rib corresponds to and matches with a strip groove of a steel stress dispersion plate respectively.

[0012] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks has an opening surface of the steel stress dispersion plate in close contact with the bottom surface of the cross plate of the rubber stress dispersion plate, so that the cross plate of the rubber stress dispersion plate is higher than the steel stress dispersion plate and protrudes from the U-rib composite steel-rubber bridge deck rib stress dispersion plate.

[0013] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks, the steel stress dispersion plate A and the steel stress dispersion plate B are symmetrically bonded to the two sides of the rubber stress dispersion plate by thermal curing to form a composite stress dispersion plate with dual combination of mechanical interlocking and chemical bonding.

[0014] The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks has an outer side designed as a flat surface for precise docking with the U-rib structure of the bridge and fixing by welding.

[0015] The method for using the U-rib composite steel-rubber bridge deck rib stress dispersion plate applicable to orthotropic bridge decks comprises the following steps:

[0016] (1) The groove of the first steel stress dispersion plate A is designed to be tightly combined with one side of the rubber stress dispersion plate, and the rubber stress dispersion plate is firmly bonded to the groove of the first steel stress dispersion plate A through heat treatment;

[0017] (2) The groove design of the second steel stress dispersion plate B is tightly combined with the other side of the rubber stress dispersion plate, and the same thermal processing is performed to ensure that the steel stress dispersion plate B and the rubber stress dispersion plate are firmly combined to form a composite stress dispersion plate; the combination of the steel plate and the rubber stress dispersion plate is cured by high temperature heating to form a dual connection mode of mechanical interlocking and chemical bonding;

[0018] (3) The horizontal plate of the rubber stress dispersion plate protrudes from the steel stress dispersion plate by 10 to 15 mm, forming a T-shaped structure and forming an interference fit with the top of the U rib, achieving adaptive vibration reduction under dynamic load through pre-compression;

[0019] (4) Install the manufactured composite stress dispersion plate at the U-rib structure position of the orthotropic bridge deck, accurately align the outer flat surface of the steel stress dispersion plate with the U-rib, and fix them by welding;

[0020] (5) The T-shaped rubber stress dispersion plate as a rubber interlayer can effectively absorb vibration energy and reduce the impact of vibration on the bridge deck structure. At the same time, the mechanical interlocking and chemical bonding design of the steel stress dispersion plate A and the steel stress dispersion plate B ensures the stability and reliability of the structure under long-term load.

[0021] The method for using the U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks adopts a staged temperature rise curing process during the thermal processing: the first stage is preheating to 120°C±10°C to allow the rubber to initially soften and penetrate into the strip grooves of the steel stress dispersion plate; the second stage is heating to 160°C±20°C, applying a pressure of 0.5-1.0MPa for 20-40 minutes to promote chemical bonding between the rubber and the steel plate to form a stable three-dimensional cross-linked structure.

[0022] The design concept of the present invention is:

[0023] The present invention is composed of two steel stress dispersion plates and a rubber stress dispersion plate sandwiched therebetween. The rubber stress dispersion plate and the steel stress dispersion plate are bonded into an integral structure through a thermal processing process, which significantly improves the bonding strength and overall stability. The inner side of the steel stress dispersion plate is processed to form a groove structure for enhanced bonding, so that the rubber can fully penetrate and solidify during the thermal processing process, achieving the dual effects of mechanical interlocking and chemical bonding.

[0024] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0025] 1. The present invention optimizes the U-rib structure in the traditional bridge deck into a composite steel-rubber structure. By filling the rubber stress dispersion plate between two steel stress dispersion plates, a dual combination of mechanical interlocking and chemical bonding is achieved. This composite steel-rubber structure can significantly improve the vibration reduction performance, fatigue resistance and overall stability of the bridge deck.

[0026] 2. The present invention forms a T-shaped structure by using a T-shaped rubber stress dispersion plate that is higher than a steel stress dispersion plate, and forms an interference fit with the top of the U rib of the orthotropic bridge deck structure, thereby achieving adaptive vibration reduction under dynamic loads through pre-compression.

[0027] 3. The present invention sets a groove structure on the inner surface of the steel stress dispersion plate, so that the rubber interlayer can fully penetrate and solidify during the thermal processing process to form an overall composite structure. This design enables the bridge deck to effectively absorb vibration energy when bearing vibration loads for a long time, avoiding damage to the structure due to fatigue, thereby improving the durability and safety of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is the plane diagram of the connection between the stress dispersion plate of the U-rib composite steel-rubber bridge deck rib and the U-rib;

[0029] Figure 2 for Figure 1 Actual application diagram of the stress dispersion plate of the middle U-rib composite steel-rubber bridge deck rib;

[0030] Figure 3 for Figure 2 Disassembly diagram of actual application of U-rib composite steel-rubber bridge deck rib stress dispersion plate;

[0031] Figure 4 for Figure 1 Enlarged view of the stress dispersion plate of the middle U-rib composite steel-rubber bridge deck rib;

[0032] Figure 5 for Figure 4 A magnified view of the steel stress dispersion plate;

[0033] Figure 6 for Figure 4 A magnified view of the middle rubber stress dispersion plate;

[0034] In the figure, 1 is the top plate of the orthotropic bridge deck; 2 is the U-rib composite steel-rubber bridge deck rib stress dispersion plate; 3 is the cross diaphragm of the orthotropic bridge deck; 4 is the steel stress dispersion plate A; 5 is the rubber stress dispersion plate; 6 is the steel stress dispersion plate B; 7 is the strip groove; 8 is the horizontal plate; 9 is the strip convex rib; 10 is the opening; 11 is the vertical plate; 12 is the U-rib; 13 is the arc-shaped incision. DETAILED DESCRIPTION

[0035] The present invention is further described below with reference to the accompanying drawings and specific embodiments, but is not intended to be a limitation of the present invention.

[0036] like Figures 1 to 6 As shown, the orthotropic bridge deck structure includes an orthotropic bridge deck top plate 1, a U-rib composite steel-rubber bridge deck rib stress dispersion plate 2, an orthotropic bridge deck transverse diaphragm 3 and a U rib 12. The bottom of the orthotropic bridge deck top plate 1 and the U rib 12 are an upper and lower integrated connection structure. The orthotropic bridge deck top plate 1 is overlapped on the top of the orthotropic bridge deck transverse diaphragm 3. An arc-shaped incision 13 corresponding to the U rib 12 is provided on the orthotropic bridge deck transverse diaphragm 3. The U-rib composite steel-rubber bridge deck rib stress dispersion plate 2 is vertically installed on the inner side of the U rib 12 of the orthotropic bridge deck structure. The U-rib composite steel-rubber bridge deck rib stress dispersion plate 2 protrudes from the steel stress dispersion plate through the transverse plate 8 of the rubber stress dispersion plate 5 to form a T-shaped structure composite stress dispersion plate, and forms an interference fit with the top of the U rib 12 of the orthotropic bridge deck structure. Among them, the arc-shaped cut 13 is an oval hole opened on the orthogonal anisotropic bridge deck cross-plate 3, and the top of the oval hole is an opening structure inclined outward, and the two sides of the U-rib 12 are respectively matched with the side surfaces of the opening structure of the arc-shaped cut 13, and the bottom surface of the U-rib 12 is located in the oval hole of the arc-shaped cut 13 and a gap is left between the oval hole.

[0037] like Figures 3 to 6 As shown, the present invention proposes a U-rib composite steel-rubber bridge deck rib stress dispersion plate 2 suitable for orthotropic bridge decks, including two steel stress dispersion plates (steel stress dispersion plate A4 and steel stress dispersion plate B6), and a rubber stress dispersion plate 5 sandwiched therebetween as a rubber interlayer, and the steel stress dispersion plate A4 and the steel stress dispersion plate B6 are symmetrically bonded to the two sides of the rubber stress dispersion plate 5 by thermal curing to form a composite stress dispersion plate. The outer side of the composite stress dispersion plate is designed to be a flat surface for precise docking with the U-rib structure of the bridge, and is fixed by welding to ensure the stability and durability of the connection. The composite stress dispersion plate is designed to be easy to install and replace, supporting rapid deployment on site while reducing maintenance costs and complexity.

[0038] The steel stress dispersion plate is a groove-shaped plate-like structure with an opening 10 on one side, and a strip groove 7 is provided vertically inside the groove-shaped plate-like structure of the steel stress dispersion plate; the rubber stress dispersion plate 5 is a T-shaped structure vertically connected to the vertical plate 11 in the middle of the bottom surface of the horizontal plate 8, and strip convex ribs 9 are symmetrically arranged on both sides of the vertical plate 11; the groove surface of each steel stress dispersion plate matches with half of the vertical plate 11, so that two steel stress dispersion plates are buckled on both sides of the vertical plate 11 of the rubber stress dispersion plate 5, and each strip convex rib 9 corresponds to and matches with the strip groove 7 of a steel stress dispersion plate; the opening surface of the steel stress dispersion plate is in close contact with the bottom surface of the horizontal plate 8 of the rubber stress dispersion plate 5, so that the horizontal plate 8 of the rubber stress dispersion plate 5 is higher than the steel stress dispersion plate and protrudes from the U-rib composite steel-rubber bridge deck rib stress dispersion plate 2. Thus, a dual combination structure of mechanical interlocking and chemical bonding is formed through thermal processing and curing. Among them, the rubber stress dispersion plate 5 is closely fitted with the upper side of the U rib 12, which plays a local shock absorption role.

[0039] like Figures 1 to 6 As shown, the use process of the U-rib composite steel-rubber bridge deck rib stress dispersion plate of the present invention is as follows:

[0040] (1) The groove of the first steel stress dispersion plate A4 is designed to be tightly combined with one side of the rubber stress dispersion plate 5, and the rubber stress dispersion plate 5 is firmly bonded to the groove of the first steel stress dispersion plate A4 through heat treatment.

[0041] (2) The groove design of the second steel stress dispersion plate B6 is tightly combined with the other side of the rubber stress dispersion plate 5, and the same heat treatment is performed to ensure the firm connection between the steel stress dispersion plate B6 and the rubber stress dispersion plate 5 to form a composite stress dispersion plate; the combination of the steel plate and the rubber stress dispersion plate is cured by high-temperature heating to form a dual connection method of mechanical interlocking and chemical bonding, which makes the connection between the two steel plates and the rubber stress dispersion plate more stable, thereby improving the fatigue resistance and vibration reduction effect of the composite structure.

[0042] (3) During the thermal processing, a staged temperature rise curing process is adopted: in the first stage, the rubber is preheated to 120°C ± 10°C to initially soften the rubber and penetrate into the strip groove 7 of the steel stress dispersion plate (steel stress dispersion plate A4 and steel stress dispersion plate B6); in the second stage, the temperature is raised to 160°C ± 20°C, and a pressure of 0.5 to 1.0 MPa is applied for 20 to 40 minutes to promote chemical bonding between the rubber and the steel plate to form a stable three-dimensional cross-linked structure.

[0043] (4) The transverse plate 8 of the rubber stress dispersion plate 5 protrudes from the steel stress dispersion plate (steel stress dispersion plate A4 and steel stress dispersion plate B6) by 10 to 15 mm, forming a T-shaped structure and forming an interference fit with the top of the U rib 12, thereby achieving adaptive vibration reduction under dynamic load through pre-compression.

[0044] (5) Install the manufactured composite stress dispersion plate at the U-rib structure position of the orthotropic bridge deck, accurately align the outer flat surface of the steel stress dispersion plate (steel stress dispersion plate A4 and steel stress dispersion plate B6) with the U rib 12, and fix them by welding; ensure that the composite stress dispersion plate is firmly combined with the bridge deck as a whole to achieve a stable supporting effect.

[0045] (6) The T-shaped rubber stress dispersion plate 5 as a rubber barrier can effectively absorb vibration energy and reduce the impact of vibration on the bridge deck structure. At the same time, the mechanical interlocking and chemical bonding design of the steel stress dispersion plate A4 and the steel stress dispersion plate B6 ensures the stability and reliability of the structure under long-term load.

[0046] The implementation results show that the present invention can theoretically reduce local stress concentration by 20% to 30% through the "steel-rubber-steel" composite structure design combined with mechanical interlocking (groove-rib bite), and significantly optimize the load distribution of the bridge deck. In addition, due to the interference fit design of the T-shaped rubber module, the nonlinear elastic deformation generated by pre-compression can adapt to dynamic load changes, absorb part of the impact energy, and reduce the transmission of vibration to the bridge deck structure. The stress dispersion plate of the present invention has excellent local vibration reduction performance and anti-fatigue performance, and can effectively absorb the vibration and impact caused by vehicle loads, while avoiding fatigue damage to the bridge deck structure caused by long-term vibration. The present invention is easy to install and has reliable performance. It is particularly suitable for U-rib reinforcement and optimization of bridges under high load and high vibration environments.

[0047] Finally, it should be noted that the above only describes certain exemplary embodiments of the present invention by way of illustration, and those skilled in the art may modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks, characterized in that: It includes two steel stress dispersion plates: steel stress dispersion plate A and steel stress dispersion plate B, and a rubber stress dispersion plate sandwiched therebetween as a rubber interlayer. The U-rib composite steel-rubber bridge deck rib stress dispersion plate protrudes from the steel stress dispersion plate through the cross plate of the rubber stress dispersion plate to form a T-shaped structure composite stress dispersion plate, and is tightly fitted to the upper side of the U rib of the orthotropic bridge deck structure through the rubber stress dispersion plate.

2. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 1, characterized in that: The orthotropic bridge deck structure includes an orthotropic bridge deck top plate, a U-rib composite steel-rubber bridge deck rib stress dispersion plate, an orthotropic bridge deck cross diaphragm and U ribs. The bottom of the orthotropic bridge deck top plate and the U rib are an upper and lower integrated connection structure. The orthotropic bridge deck top plate is overlapped on the top of the orthotropic bridge deck cross diaphragm. An arc-shaped incision corresponding to the U rib is provided on the orthotropic bridge deck cross diaphragm. The U-rib composite steel-rubber bridge deck rib stress dispersion plate is vertically installed on the inner side of the U rib of the orthotropic bridge deck structure.

3. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 2 is characterized in that: The arc-shaped incision is an orthogonal anisotropic bridge deck diaphragm with an oval hole, and the top of the oval hole is an opening structure inclined outward, the two sides of the U-rib are respectively matched with the side surfaces of the opening structure of the arc-shaped incision, and the bottom surface of the U-rib is located in the oval hole of the arc-shaped incision and a gap is left between the oval hole and the oval hole.

4. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 1, characterized in that: The cross plate of the rubber stress dispersion plate protrudes from the steel stress dispersion plate by 10 to 15 mm, and the cross plate forms an interference fit with the top of the U rib, and realizes adaptive vibration reduction under dynamic load through pre-compression.

5. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 1, characterized in that: The steel stress dispersion plate is a grooved plate structure with an opening on one side, and a strip groove is provided vertically on the inner side of the grooved plate structure of the steel stress dispersion plate; the rubber stress dispersion plate is a T-shaped structure vertically connected to the vertical plate in the middle of the bottom surface of the horizontal plate, and strip convex ribs are symmetrically arranged on both sides of the vertical plate; the grooved surface of each steel stress dispersion plate matches with half of the vertical plate respectively, so that the two steel stress dispersion plates are buckled on both sides of the vertical plate of the rubber stress dispersion plate, and each strip convex rib corresponds to and matches with a strip groove of a steel stress dispersion plate.

6. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 5, characterized in that: The opening surface of the steel stress dispersion plate is in close contact with the bottom surface of the transverse plate of the rubber stress dispersion plate, so that the transverse plate of the rubber stress dispersion plate is higher than the steel stress dispersion plate and protrudes from the U-rib composite steel-rubber bridge deck rib stress dispersion plate.

7. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 1, characterized in that: The steel stress dispersion plate A and the steel stress dispersion plate B are symmetrically bonded to the two sides of the rubber stress dispersion plate by heat curing to form a composite stress dispersion plate with a dual combination of mechanical interlocking and chemical bonding.

8. The U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to claim 7, characterized in that: The outer side of the composite stress dispersion plate is designed to be flat, which is used to precisely dock with the U-rib structure of the bridge and is fixed by welding.

9. A method for using the U-rib composite steel-rubber bridge deck rib stress dispersion plate suitable for orthotropic bridge decks according to any one of claims 1 to 8, characterized in that: The steps include: (1) The groove of the first steel stress dispersion plate A is designed to be tightly combined with one side of the rubber stress dispersion plate, and the rubber stress dispersion plate is firmly bonded to the groove of the first steel stress dispersion plate A through heat treatment; (2) The groove design of the second steel stress dispersion plate B is tightly combined with the other side of the rubber stress dispersion plate, and the same thermal processing is performed to ensure that the steel stress dispersion plate B and the rubber stress dispersion plate are firmly combined to form a composite stress dispersion plate; the combination of the steel plate and the rubber stress dispersion plate is cured by high temperature heating to form a dual connection mode of mechanical interlocking and chemical bonding; (3) The horizontal plate of the rubber stress dispersion plate protrudes from the steel stress dispersion plate by 10 to 15 mm, forming a T-shaped structure and forming an interference fit with the top of the U rib, achieving adaptive vibration reduction under dynamic load through pre-compression; (4) Install the manufactured composite stress dispersion plate at the U-rib structure position of the orthotropic bridge deck, accurately align the outer flat surface of the steel stress dispersion plate with the U-rib, and fix them by welding; (5) The T-shaped rubber stress dispersion plate as a rubber interlayer can effectively absorb vibration energy and reduce the impact of vibration on the bridge deck structure. At the same time, the mechanical interlocking and chemical bonding design of the steel stress dispersion plate A and the steel stress dispersion plate B ensures the stability and reliability of the structure under long-term load.

10. The method for using the U-rib composite steel-rubber bridge deck rib stress dispersion plate applicable to orthotropic bridge decks according to claim 9, characterized in that: During the thermal processing, a staged temperature rise curing process is adopted: the first stage is preheating to 120℃±10℃ to soften the rubber initially and penetrate into the strip grooves of the steel stress dispersion plate; the second stage is heated to 160℃±20℃, and a pressure of 0.5~1.0MPa is applied for 20~40 minutes to promote chemical bonding between the rubber and the steel plate and form a stable three-dimensional cross-linked structure.

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