Anti-seismic fabricated bridge joint structure and construction method

Abstract

The invention belongs to the technical field of bridge joint structures, and particularly relates to an anti-seismic assembly type bridge joint structure and a construction method.The anti-seismic assembly type bridge joint structure comprises a bridge main beam, a bridge buttress and an anti-seismic support fixedly connected between the bridge main beam and the bridge buttress; a fixing part is arranged in a connecting area between a bridge girder and a bridge buttress, the fixing part comprises at least one high-strength bolt and an anti-seismic gasket bearing the high-strength bolt, the anti-seismic gasket is provided with at least one connector, and the connector is used for bearing the high-strength bolt to penetrate through. The anti-seismic support comprises a connecting assembly, a stiffening assembly and anti-seismic channel steel. The connecting assembly comprises a first anti-seismic connecting rod, a first anti-seismic hinge piece for fixing one end of the first anti-seismic connecting rod to the bridge buttress and a second anti-seismic hinge piece for fixing the first anti-seismic connecting rod to one end of the anti-seismic channel steel. One end of the stiffening assembly is fixedly arranged on the bridge girder, and the other end of the stiffening assembly is fixed on the anti-seismic channel steel; thus, seismic fluctuations are effectively isolated.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge node structures, and in particular relates to an earthquake-resistant assembled bridge node structure and a construction method. Background Art

[0002] With the acceleration of urbanization and the growing demand for transportation, the number of bridge construction has increased significantly. At the same time, the seismic performance of bridges has also received more and more attention, especially in earthquake-prone areas, which puts higher seismic requirements on bridge structures. Traditional bridge seismic structures are mostly cast-in-place concrete, which has a long construction period, a great impact on the environment, and is difficult to replicate and implement on a large scale. In order to meet these challenges, prefabricated bridges have gradually become an effective solution, and their seismic node structures have therefore entered a rapid development stage.

[0003] Existing prefabricated bridges with seismic node structures can prefabricate parts in factories and then quickly assemble them on site, which significantly shortens the construction period and reduces the impact on traffic. In addition, construction units can customize structural designs and optimize seismic performance based on actual working conditions and earthquake risk assessments through prefabricated design. However, although the existing prefabricated bridge seismic structures have improved the construction efficiency and seismic performance of the structure to a certain extent, there are still certain defects. For example, existing structures often use traditional connection methods, such as welding or simple mechanical connections, which may lead to weak connections under strong earthquakes, increasing the risk of structural damage. In addition, most of the existing seismic nodes can only provide basic shock absorption functions and cannot effectively isolate seismic fluctuations, resulting in the vibration energy being directly transmitted to the bridge body. Summary of the invention

[0004] One of the purposes of the present invention is to address the deficiencies of the prior art and to provide a seismic-resistant prefabricated bridge node structure that can effectively isolate earthquake fluctuations and directly transfer vibration energy to the bridge body.

[0005] In order to achieve the above technical objectives, this application implements the following technical solutions:

[0006] A seismic resistant assembled bridge node structure, comprising a bridge main beam and a bridge pier and a seismic resistant bracket fixedly connected between the bridge main beam and the bridge pier;

[0007] The connection area between the bridge main beam and the bridge pier is provided with a fixing part, the fixing part includes at least one high-strength bolt and a seismic gasket receiving the high-strength bolt, the seismic gasket is provided with at least one interface, the interface is used to receive the high-strength bolt; the seismic gasket is arranged in the connection area, and the high-strength bolt is fixedly connected to the connection area through the seismic gasket;

[0008] The seismic support comprises a connection assembly, a stiffening assembly and a seismic channel steel, wherein the connection assembly comprises a first seismic link and a first seismic hinge for fixing one end of the first seismic link to the bridge pier and a second seismic hinge for fixing the first seismic link to one end of the seismic channel steel;

[0009] One end of the stiffening assembly is fixedly arranged on the bridge main beam, and the other end of the stiffening assembly is fixed on the seismic channel steel.

[0010] The above technical solution produces the following technical effects:

[0011] Considering that the existing technology mostly relies on a single connection method, this application introduces a combination structure of high-strength bolts and seismic gaskets to provide stronger connection reliability. Among them, the connection form optimized by the technical solution of this application ensures that the vibration energy can be absorbed and dispersed during an earthquake, improving the toughness and stability of the overall structure. In addition, this application optimizes the structure of the seismic support by setting a combination of connection components, stiffening components and seismic channel steels, further improving the category and function of the seismic support, so that the support is not only load-bearing, but also has an active shock-absorbing function.

[0012] As a further improvement to the seismic-resistant assembled bridge node structure of the present application, the connection area is provided with a first connection area and a second connection area, and the seismic gasket is provided in the first connection area of ​​the bridge main beam and / or the second connection area of ​​the bridge pier;

[0013] The first connection area is provided with at least one first slot, and the first slot is arranged corresponding to the interface and is provided for threaded connection with a high-strength bolt.

[0014] As a further improvement to the seismic-resistant assembled bridge node structure of the present application, the seismic-resistant gasket is made of at least one of polyurethane material, EPDM rubber material, and polytetrafluoroethylene material.

[0015] As a further improvement to the seismic assembled bridge node structure of the present application, the stiffening assembly includes at least one through-thread full-thread screw and a first stiffening member that penetrates and assembles the through-thread full-thread screw, one end of the through-thread full-thread screw is threadedly connected to a first through hole of the bridge main beam and a first pipe extending from the first through hole, a first lumen is provided in the first pipe, and the first lumen is threadedly penetrated by the through-thread full-thread screw;

[0016] The other end of the full-thread screw passes through the first extension body of the second seismic hinge and the first through slot of the seismic channel steel, one end of the first extension body is fixedly connected to the seismic channel steel, the other end of the first extension body is fixedly set on the hinge body of the second seismic hinge, and the end of the hinge body away from the first extension body is fixedly set on the first seismic connecting rod.

[0017] As a further improvement to the seismic assembled bridge node structure of the present application, the stiffening assembly also includes a second stiffening member through which a through-thread full-thread screw is assembled, one end of the through-thread full-thread screw is threadedly connected to a second through hole of the bridge main beam and a second pipe extending from the second through hole, a second lumen is provided in the second pipe, and the second lumen is threadedly passed through by the through-thread full-thread screw;

[0018] The other end of the through-thread full-thread screw passes through the second through slot of the earthquake-resistant channel steel.

[0019] As a further improvement to the seismic-resistant prefabricated bridge node structure of the present application, a first fixing hole is provided on one side of the first stiffener in the thickness direction. The first fixing hole is used for a fixing bolt to pass through and the first fixing hole is threadedly connected to the fixing bolt. The side of the fixing bolt away from the fixing nut is in contact with the full-thread screw.

[0020] As a further improvement to an earthquake-resistant prefabricated bridge node structure of the present application, a second fixing hole is provided on one side in the thickness direction of the second stiffener, the second fixing hole is used for a fixing bolt to pass through and the second fixing hole is threadedly connected to the fixing bolt, and the side of the fixing bolt away from the fixing nut is in contact with the full-thread screw.

[0021] As a further improvement of an earthquake-resistant prefabricated bridge node structure of the present application, the first earthquake-resistant hinge includes a second extension body fixedly connected to the bridge pier through an expansion bolt; the second extension body is provided with a threaded hole for the expansion bolt to pass through, and the threaded hole is arranged corresponding to the third through hole of the bridge pier.

[0022] As a further improvement of the seismic-resistant prefabricated bridge node structure of the present application, the connecting assembly also includes a second seismic-resistant connecting rod and a third seismic-resistant hinge that fixes one end of the second seismic-resistant connecting rod to the main beam of the bridge and a fourth seismic-resistant hinge that fixes the second seismic-resistant connecting rod to one end of the seismic-resistant channel steel.

[0023] The second purpose of the present invention is to solve the problem that many traditional bridge node structures in the prior art have complicated construction steps, often requiring multiple adjustments and repeated work, resulting in low construction efficiency. By subdividing the steps and simplifying the design of connections and supports, the method effectively reduces the complexity of construction and improves construction efficiency.

[0024] In order to achieve the above-mentioned invention objectives, this application implements the following technical solutions:

[0025] A construction method for an earthquake-resistant assembled bridge node structure comprises the following steps:

[0026] S1. According to the design drawings, the bridge main beam, bridge piers, seismic brackets, fixings, stiffening components and connection components are manufactured in the factory and transported to the construction site;

[0027] S2. Position the bridge main beam and the bridge pier according to the design requirements, and set the first connection area and the second connection area in the connection area;

[0028] S3. A seismic gasket is provided in the first connection area and / or the second connection area, wherein the seismic gasket is provided with at least one interface for receiving a high-strength bolt;

[0029] S4. Preliminary connection between the bridge main beam and the bridge piers is made through high-strength bolts and seismic gaskets;

[0030] S5. Install the seismic support, fix one end of the first seismic link to the bridge pier through the first seismic hinge, and fix the other end of the first seismic link to one end of the seismic channel steel through the second seismic hinge;

[0031] S6. Install the stiffening assembly, fix one end of the stiffening assembly to the bridge main beam, and fix the other end of the stiffening assembly to the seismic channel steel. The stiffening assembly includes at least one through-thread full-thread screw and a first stiffening member and a second stiffening member that penetrate and assemble the through-thread full-thread screw. One end of the through-thread full-thread screw is threadedly connected to a first through hole of the bridge main beam and a first pipe extending from the first through hole. A first lumen is provided in the first pipe for the through-thread full-thread screw to thread through. The other end of the through-thread full-thread screw penetrates the first extension body of the second seismic hinge and the first through groove of the seismic channel steel.

[0032] S7, fixing the first stiffener and the second stiffener on the through-thread full-thread screw by means of fixing bolts, and completing the installation of the seismic support and the stiffening assembly;

[0033] S8. Check all connection parts to ensure that high-strength bolts, seismic gaskets, seismic brackets and stiffening components are firmly installed.

[0034] The above technical solution produces the following technical effects:

[0035] In the above construction method, the combination of high-strength bolts and seismic gaskets improves the connection strength between the bridge main beam and the pier, ensures its stability and safety during earthquakes, and increases the seismic resistance of the structure. And, through factory prefabricated components, the assembly time at the construction site is significantly shortened, which improves construction efficiency and reduces the impact of construction on traffic and the environment. In addition, the installation of seismic brackets and the optimized design of stiffening components can effectively absorb and slow down the transmission of seismic energy, reduce the overall vibration of the structure during earthquakes, and enhance the seismic toughness of the bridge.

[0036] The above structures can all be designed in a modular manner, which reduces the complexity of the subsequent maintenance process, facilitates daily inspection and maintenance, and extends the service life of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0038] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention;

[0039] Figure 2 It is a structural schematic diagram of the node structure in Example 1 of the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of the seismic gasket in the structure of Example 1 of the present invention;

[0041] Figure 4 For the present invention Figure 1 A local enlarged view at point B;

[0042] Figure 5 For the present invention Figure 1 A local enlarged view at point A;

[0043] Figure 6 This is a schematic diagram of the structure of Example 4 of the present invention;

[0044] in:

[0045] 1- Bridge girder;

[0046] 11- connection area;

[0047] 111-first connection area;

[0048] 12- First slot;

[0049] 121-first pipeline;

[0050] 1211-first lumen;

[0051] 122 - second pipeline;

[0052] 1221 - second lumen;

[0053] 13-first through hole;

[0054] 14- a second through hole;

[0055] 2- Bridge piers;

[0056] 21- second connection area;

[0057] 211 - second slot;

[0058] 22 - third through hole;

[0059] 3- Earthquake-resistant bracket;

[0060] 31-Connection components;

[0061] 311- first anti-vibration connecting rod;

[0062] 312-first anti-seismic hinge;

[0063] 3121- second extension body;

[0064] 3122-third anti-seismic hinge; 3123-fourth anti-seismic hinge;

[0065] 32- Stiffening assembly;

[0066] 321-through-thread full-thread screw;

[0067] 322-first stiffener;

[0068] 3222-fixing bolt;

[0069] 3223-fixing nut;

[0070] 323- second stiffener;

[0071] 33-seismic channel steel;

[0072] 331 - second anti-seismic hinge;

[0073] 3311-first extension body;

[0074] 332-first through groove;

[0075] 333-second through slot; 4-fixing member;

[0076] 41-High strength bolts;

[0077] 42-anti-seismic gasket;

[0078] 421 - Interface;

[0079] 5- Expansion bolts; DETAILED DESCRIPTION

[0080] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0081] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0082] Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the claims. Any technical personnel in this field may make several possible changes and modifications without departing from the concept of the present application. Therefore, the scope of protection of the present application shall be based on the scope defined by the claims of the present application.

[0083] The present invention is further described in detail below in conjunction with specific implementation methods, but the embodiments of the present invention are not limited thereto.

[0084] Example 1

[0085] It is known that although the existing prefabricated bridge seismic structure has improved the construction efficiency and seismic performance of the structure to a certain extent, it still has the following shortcomings, which is also where the present application scheme has made a breakthrough. First, the existing structure often uses traditional connection methods, such as welding or simple mechanical connection, which may lead to weak connections under strong earthquakes and increase the risk of damage to the structure. However, traditional prefabricated structures often lack flexible response measures for sudden risks in design, resulting in reduced seismic resistance of the overall structure under special circumstances. As a result, most of the existing seismic nodes can only provide basic shock absorption functions and cannot effectively isolate earthquake fluctuations, resulting in the vibration energy being directly transmitted to the bridge body.

[0086] like Figure 1-3As shown, in order to solve the technical defects of the above technical problems, the seismic assembled bridge node structure of the present application includes a bridge main beam 1 and a bridge pier 2 and a seismic bracket 3 fixedly connected between the bridge main beam 1 and the bridge pier 2; a fixing member 4 is provided in the connection area 11 between the bridge main beam 1 and the bridge pier 2, and the fixing member 4 includes at least one high-strength bolt 41 and a seismic gasket 42 for receiving the high-strength bolt 41, and the seismic gasket 42 is provided with at least one interface 421, and the interface 421 is used to receive the high-strength bolt 41 through; the seismic gasket 42 is provided in the connection area 11, high-strength bolts 41 are fixedly connected to the connection area 11 through seismic gaskets 42; the seismic support 3 includes a connection assembly 31, a stiffening assembly 32 and a seismic channel steel 33, the connection assembly 31 includes a first seismic link 311 and a first seismic hinge 312 that fixes one end of the first seismic link 311 to the bridge pier 2 and a second seismic hinge 331 that fixes the first seismic link 311 to one end of the seismic channel steel 33; one end of the stiffening assembly 32 is fixedly arranged on the bridge main beam 1, and the other end of the stiffening assembly 32 is fixed to the seismic channel steel 33. Therefore, the seismic assembled bridge node structure of the present application realizes stable support of the bridge structure through the fixed connection of the bridge main beam 1, the bridge pier 2 and the seismic support 3. Among them, the seismic support 3, as a key component, effectively improves the seismic performance of the bridge through the combined design of the connection assembly 31, the stiffening assembly 32 and the seismic channel steel 33.

[0087] Specifically, the connection assembly 31 realizes the flexible connection between the seismic support 3 and the bridge main beam 1 and the bridge pier 2 through the cooperation of the first seismic link 311, the first seismic hinge 312 and the second seismic hinge 331. This hinge design allows the connection assembly 31 to deform to a certain extent when an earthquake occurs, absorb and disperse the seismic energy, thereby reducing the impact on the main structure of the bridge. At the same time, the provision of the first seismic link 311 and the second seismic link increases the stability and load-bearing capacity of the seismic support 3, further improving the seismic performance of the bridge.

[0088] Furthermore, through the combination of the through-thread full-thread screw 321, the first stiffener 322 and the second stiffener 323, the stiffening assembly 32 not only enhances the connection strength between the bridge main beam 1 and the seismic channel steel 33, but also provides additional support during an earthquake to prevent the bridge structure from being excessively deformed due to vibration. In addition, the thread design of the through-thread full-thread screw 321 makes the connection between the stiffening assembly 32 and the bridge main beam 1 and the seismic channel steel 33 more secure and less likely to loosen.

[0089] As the main load-bearing component of the earthquake-resistant bracket 3, the shape and size of the earthquake-resistant channel steel 33 can ensure that the vibration energy can be effectively absorbed and dispersed during an earthquake. At the same time, the tight cooperation between the earthquake-resistant channel steel 33, the connecting assembly 31 and the stiffening assembly 32 makes the entire earthquake-resistant bracket 3 form a stable whole to jointly resist the impact of the earthquake.

[0090] In summary, the seismic-resistant assembled bridge node structure of the present application realizes effective support and seismic protection of the bridge structure through the combined design of the optimized connection form, connection assembly 31, stiffening assembly 32 and seismic-resistant channel steel 33. This structure not only improves the seismic performance of the bridge, but also shortens the construction period and reduces the impact on the environment, and has significant technical advantages and economic benefits.

[0091] Example 2

[0092] As shown in Figures 1-5, in order to further improve the dispersion effect of the seismic structure of the prefabricated bridge body of the present application on the force when vibration occurs, further, the connection area 11 is provided with a first connection area 111 and a second connection area 21, and the seismic gasket 42 is provided in the first connection area 111 of the bridge main beam 1 and / or the second connection area 21 of the bridge pier 2; the first connection area 111 is provided with at least one first slot 12, and the first slot 12 is correspondingly provided with the interface 421 and is provided for threaded connection with the high-strength bolt 41. As a result, the seismic gasket 42 can not only fit tightly with the bridge main beam 1 and the bridge pier 2 under the action of the high-strength bolt 41, but also can further enhance the stability of the connection through the cooperation between the first slot 12 and the interface 421. The seismic gasket 42 is provided in the first connection area 111 and / or the second connection area 21, which can effectively disperse the vibration energy generated during an earthquake and avoid structural damage caused by energy concentration.

[0093] In addition, the design of the first slot 12 enables the high-strength bolt 41 to be more firmly fixed on the seismic gasket 42, and the stability of the connection can be maintained even under the action of a strong earthquake, thereby improving the seismic performance of the entire bridge structure.

[0094] Furthermore, the seismic gasket 42 is at least one of polyurethane material, EPDM rubber material, and polytetrafluoroethylene material. Among them, the polyurethane material has good elasticity and recovery, can absorb and disperse vibration energy when an earthquake occurs, and effectively reduce the vibration amplitude of the bridge structure. At the same time, the polyurethane material also has certain wear resistance and corrosion resistance, which can extend the service life of the seismic gasket 42. The EPDM rubber material is known for its excellent aging resistance and chemical medium resistance. During the long-term use of the bridge, the EPDM rubber seismic gasket 42 can maintain stable performance, is not easy to age or be corroded by chemical substances, thereby ensuring the reliability of the connection. The polytetrafluoroethylene material is selected because of its extremely low friction coefficient and good self-lubricating property. This material can reduce the friction between the seismic gasket 42 and the bridge main beam 1 and the bridge pier 2, making the connection smoother, and also helps to reduce energy loss during an earthquake.

[0095] It is worth noting that when polyurethane, EPDM and polytetrafluoroethylene materials are mixed, a synergistic effect can be produced to further improve the performance of the seismic gasket 42. The mixed material can combine the advantages of each component material, such as improving elasticity, aging resistance, chemical resistance and self-lubrication, thereby enhancing the performance of the seismic gasket 42 in earthquakes. At the same time, the mixed material can also be adjusted according to specific needs to meet the seismic requirements of different bridge structures.

[0096] Other details that are the same as those in Example 1 are not described in detail in this example.

[0097] Example 3

[0098] like Figure 1-5 As shown, the difference from Example 1 is that: in order to further improve the seismic structure formed by the seismic support 3 of the present application and the bridge node, further, the stiffening assembly 32 includes at least one through-thread full-thread screw 321 and a first stiffening member 322 that penetrates and assembles the through-thread full-thread screw 321, one end of the through-thread full-thread screw 321 is threadedly connected to the first through hole 13 of the bridge main beam 1 and the first pipe 121 extending from the first through hole 13, and the first pipe 121 is provided with a first lumen 1211, and the first The tubular cavity 1211 is for the threaded full-thread screw 321 to thread through; the other end of the threaded full-thread screw 321 passes through the first extension body 3311 of the second seismic hinge 331 and the first through groove 332 of the seismic channel steel 33, one end of the first extension body 3311 is fixedly connected to the seismic channel steel 33, the other end of the first extension body 3311 is fixedly set on the hinge body of the second seismic hinge 331, and the end of the hinge body away from the first extension body 3311 is fixedly set on the first seismic connecting rod 311.

[0099] Therefore, the design of the through-thread full-thread screw 321 not only enhances the structural strength of the stiffening assembly 32, but also makes the connection between the stiffening assembly 32 and the bridge main beam 1 and the seismic channel steel 33 tighter and more reliable. When an earthquake occurs, the through-thread full-thread screw 321 can effectively transmit and disperse vibration energy to prevent the bridge structure from being excessively deformed due to vibration. At the same time, the setting of the first stiffener 322 further enhances the load-bearing capacity and stability of the through-thread full-thread screw 321, thereby improving the seismic performance of the entire bridge structure.

[0100] Furthermore, the reinforcing assembly 32 also includes a second reinforcing member 323 that penetrates and assembles the through-thread full-thread screw 321. One end of the through-thread full-thread screw 321 is threadedly connected to the second through hole 14 of the bridge main beam 1 and the second pipe 122 extending from the second through hole 14. The second pipe 122 is provided with a second lumen 1221 for the through-thread full-thread screw 321 to thread through. The other end of the through-thread full-thread screw 321 penetrates the second through groove 333 of the earthquake-resistant channel steel 33. Thus, through the arrangement of the first reinforcing member 322 and the second reinforcing member 323, the reinforcing assembly 32 forms a more stable support system in the bridge structure. When an earthquake occurs, the first reinforcing member 322 and the second reinforcing member 323 can work together to absorb and disperse vibration energy, effectively preventing the bridge structure from being excessively deformed due to vibration. At the same time, the thread design of the full-thread screw 321 makes the connection between the stiffening assembly 32 and the bridge main beam 1 and the seismic channel steel 33 more secure, and the stability of the connection can be maintained even under strong earthquakes, thereby further improving the seismic performance of the entire bridge structure.

[0101] In addition, the seismic support 3 of this embodiment not only realizes effective support for the bridge structure, but also has the function of active shock absorption through the combined design of the connection component 31, the stiffening component 32 and the seismic channel steel 33. When an earthquake occurs, the connection component 31 can deform to a certain extent, absorb and disperse the seismic energy, and the seismic channel steel 33, as the main load-bearing component, can effectively absorb and disperse the vibration energy and protect the bridge structure from damage. This structural design not only improves the seismic performance of the bridge, but also ensures the stability and safety of the bridge during long-term use.

[0102] Furthermore, a first fixing hole is provided on one side of the first stiffener 322 in the thickness direction, the first fixing hole is used for the fixing bolt 3222 to penetrate and the first fixing hole is threadedly connected to the fixing bolt 3222, and the side of the fixing bolt 3222 away from the fixing nut 3223 is in contact with the through-thread full-thread screw 321. Thus, through the cooperation of the first fixing hole and the fixing bolt 3222, the connection between the first stiffener 322 and the through-thread full-thread screw 321 can be further fixed, thereby enhancing the structural stability of the entire stiffening assembly 32. When an earthquake occurs, this additional fixing method can effectively prevent the stiffening assembly 32 from loosening or falling off due to vibration, thereby ensuring the overall seismic performance of the bridge structure. At the same time, the design of the first fixing hole is also convenient for construction personnel to install and debug, thereby improving construction efficiency.

[0103] Furthermore, a second fixing hole is also provided on one side of the second stiffener 323 in the thickness direction. The second fixing hole is also used for the fixing bolt 3222 to penetrate and be threadedly connected with the fixing bolt 3222. The side of the fixing bolt 3222 away from the fixing nut 3223 abuts against the through-thread full-thread screw 321. In this way, the first stiffener 322 and the second stiffener 323 are both firmly connected to the through-thread full-thread screw 321 through the cooperation of the fixing hole and the fixing bolt 3222, forming a more stable support system. Under the action of an earthquake, this design can more effectively absorb and disperse vibration energy and protect the safety of the bridge structure.

[0104] Furthermore, the first seismic hinge 312 includes a second extension body 3121 fixedly connected to the bridge pier 2 by an expansion bolt 5; the second extension body 3121 is provided with a threaded hole for the expansion bolt 5 to penetrate, and the threaded hole is provided corresponding to the third through hole 22 of the bridge pier 2. Thus, the second extension body 3121 is firmly fixed to the bridge pier 2 by the expansion bolt 5. This fixing method not only enhances the connection strength between the first seismic hinge 312 and the bridge pier 2, but also improves the stability of the connection. When an earthquake occurs, the first seismic hinge 312 can withstand greater seismic forces, effectively reducing the risk of structural damage caused by loose or falling connections. At the same time, the design of the expansion bolt 5 also facilitates installation and debugging by construction personnel, thereby improving construction efficiency.

[0105] In summary, the seismic-resistant assembled bridge node structure of the present application achieves effective support and seismic protection for the bridge structure through a series of optimized designs, including the combination of high-strength bolts 41 and seismic gaskets 42, the hinged design of the connection assembly 31, the strengthening of the stiffening assembly 32, and the main load-bearing function of the seismic channel steel 33. These designs not only improve the seismic performance of the bridge, but also ensure the stability and safety of the bridge during long-term use, and have significant technical advantages and economic benefits.

[0106] Other details that are the same as those in Example 1 are not described in detail in this example.

[0107] Example 4

[0108] like Figure 1-6 As shown, what is different from Example 1 is that: in order to further improve the seismic strength of the seismic-resistant prefabricated bridge node structure of the present application, further, the connecting assembly 31 also includes a second seismic-resistant link and a third seismic-resistant hinge 3122 that fixes one end of the second seismic-resistant link to the bridge main beam 1 and a fourth seismic-resistant hinge 3123 that fixes the second seismic-resistant link to one end of the seismic-resistant channel steel 33.

[0109] Thus, by adding the second seismic link, the third seismic hinge 3122 and the fourth seismic hinge 3123, the connection assembly 31 forms a more complex support network in the bridge structure. When an earthquake occurs, the second seismic link can work together with the first seismic link 311 to absorb and disperse seismic energy, thereby further enhancing the seismic performance of the bridge structure. At the same time, the design of the third seismic hinge 3122 and the fourth seismic hinge 3123 also allows the connection assembly 31 to deform to a certain extent during an earthquake, which can more effectively absorb seismic energy and reduce the impact on the main structure of the bridge.

[0110] Furthermore, the present applicant has learned that the construction steps of many traditional bridge node structures are complicated, often requiring multiple adjustments and repeated work, resulting in low construction efficiency. By subdividing the steps and simplifying the design of connections and supports, the method effectively reduces the complexity of construction and improves construction efficiency. As a result, the following improvements are made to the construction method of the existing bridge node structure, wherein the construction method of the seismic-resistant assembled bridge node structure in the present application includes the following steps:

[0111] S1. According to the design drawings, the bridge main beam 1, the bridge pier 2, the seismic support 3, the fixing parts 4, the stiffening assembly 32 and the connecting assembly 31 are manufactured in the factory and transported to the construction site;

[0112] S2, positioning the bridge main beam 1 and the bridge pier 2 according to the design requirements, and setting a first connection area 111 and a second connection area 21 in the connection area 11;

[0113] S3, a seismic gasket 42 is provided in the first connection area 111 and / or the second connection area 21, and the seismic gasket 42 is provided with at least one interface 421 for receiving the high-strength bolt 41;

[0114] S4, preliminarily connecting the bridge main beam 1 and the bridge pier 2 through high-strength bolts 41 and seismic gaskets 42;

[0115] S5. Install the seismic support 3, fix one end of the first seismic link 311 to the bridge pier 2 through the first seismic hinge 312, and fix the other end of the first seismic link 311 to one end of the seismic channel steel 33 through the second seismic hinge 331;

[0116] S6. Install the stiffening assembly 32, fix one end of the stiffening assembly 32 to the bridge main beam 1, and fix the other end of the stiffening assembly 32 to the seismic channel steel 33. The stiffening assembly 32 includes at least one through-thread full-thread screw 321 and a first stiffening member 322 and a second stiffening member 323 that penetrate and assemble the through-thread full-thread screw 321. One end of the through-thread full-thread screw 321 is threadedly connected to the first through hole 13 of the bridge main beam 1 and the first pipe 121 extending from the first through hole 13. A first lumen 1211 is provided in the first pipe 121 for the through-thread full-thread screw 321 to penetrate through the thread. The other end of the through-thread full-thread screw 321 penetrates the first extension body 3311 of the second seismic hinge 331 and the first through groove 332 of the seismic channel steel 33.

[0117] S7, fix the first stiffener 322 and the second stiffener 323 to the through-thread full-thread screw 321 by means of the fixing bolts 3222, and complete the installation of the seismic support 3 and the stiffening assembly 32;

[0118] S8. Check all connection parts to ensure that the high-strength bolts 41, seismic gaskets 42, seismic brackets 3 and stiffening components 32 are firmly installed.

[0119] Through the above construction method, not only the construction steps of the seismic prefabricated bridge node structure are simplified, but also the construction efficiency and quality are improved. In step S1, all components are precisely manufactured in the factory, reducing the errors and uncertainties of on-site construction. This method of prefabricating components not only improves the accuracy and quality of the components, but also helps to shorten the construction period and reduce the impact on the environment. In steps S2 to S8, the accurate installation and firm connection of each component are ensured through detailed construction processes and strict inspection measures. In particular, in step S4, the close connection between the bridge main beam 1 and the bridge pier 2 is achieved through the combined use of high-strength bolts 41 and seismic gaskets 42, which enhances the stability and seismic resistance of the connection. In steps S5 and S6, the installation of seismic brackets 3 and stiffening components 32 further enhances the overall stability and load-bearing capacity of the bridge structure. Finally, in step S8, all connection parts are inspected to ensure the reliability and safety of the entire seismic prefabricated bridge node structure. This construction method not only improves the seismic performance of the bridge, but also provides a strong guarantee for the long-term stable operation of the bridge.

[0120] Other details that are the same as those in Example 1 are not described in detail in this example.

[0121] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A seismic resistant assembled bridge node structure, characterized in that: It comprises a bridge main beam (1) and a bridge pier (2), and an anti-seismic support (3) fixedly connected between the bridge main beam (1) and the bridge pier (2); A connecting area (11) between the bridge main beam (1) and the bridge pier (2) is provided with a fixing member (4), the fixing member (4) comprising at least one high-strength bolt (41) and a seismic gasket (42) receiving the high-strength bolt (41), the seismic gasket (42) being provided with at least one interface (421), the interface (421) being used for receiving the high-strength bolt (41) to pass through; the seismic gasket (42) is provided in the connecting area (11), and the high-strength bolt (41) is fixedly connected to the connecting area (11) via the seismic gasket (42); The seismic support (3) comprises a connection assembly (31), a stiffening assembly (32) and a seismic channel steel (33), wherein the connection assembly (31) comprises a first seismic link (311), a first seismic hinge (312) for fixing one end of the first seismic link (311) to the bridge pier (2), and a second seismic hinge (331) for fixing the first seismic link (311) to one end of the seismic channel steel (33); One end of the stiffening component (32) is fixedly arranged on the bridge main beam (1), and the other end of the stiffening component (32) is fixed to the seismic channel steel (33).

2. The seismic-resistant assembled bridge node structure according to claim 1, characterized in that: The connection area (11) is provided with a first connection area (111) and a second connection area (21), and the seismic gasket (42) is provided in the first connection area (11) of the bridge main beam (1) and / or the second connection area (21) of the bridge pier (2); The first connection area (11) is provided with at least one first slot (12), the first slot (12) is arranged corresponding to the interface (421) and is provided for the high-strength bolt (41) to be threadedly connected; the second connection area (21) is provided with at least one second slot (211), the second slot (211) is arranged corresponding to the interface (421) and is provided for the high-strength bolt (41) to be threadedly connected.

3. The seismic-resistant assembled bridge node structure according to claim 1, characterized in that: The anti-vibration gasket (42) is made of at least one of polyurethane material, EPDM rubber material and polytetrafluoroethylene material.

4. The seismic-resistant assembled bridge node structure according to claim 1, characterized in that: The stiffening assembly (32) comprises at least one through-thread full-thread screw (321) and a first stiffening member (322) which penetrates and assembles the through-thread full-thread screw (321); one end of the through-thread full-thread screw (321) is threadedly connected to a first through hole (13) of the bridge main beam (1) and a first pipe (121) extending from the first through hole (13); a first lumen (1211) is provided in the first pipe (121); the first lumen (1211) is for the through-thread full-thread screw (321) to threadably penetrate; The other end of the through-thread full-thread screw (321) passes through the first extension body (3311) of the second seismic hinge (331) and the first through slot (332) of the seismic channel steel (33), one end of the first extension body (3311) is fixedly connected to the seismic channel steel (33), the other end of the first extension body (3311) is fixedly arranged on the hinge body (3312) of the second seismic hinge (331), and one end of the hinge body (3312) away from the first extension body (3311) is fixedly arranged on the first seismic connecting rod (311).

5. The seismic-resistant assembled bridge node structure according to claim 4, characterized in that: The reinforcing assembly (32) further comprises a second reinforcing member (323) which penetrates and assembles the through-thread full-thread screw (321); one end of the through-thread full-thread screw (321) is threadedly connected to a second through hole (14) of the bridge main beam (1) and a second pipe (122) extending from the second through hole (14); a second lumen (1221) is provided in the second pipe (122); the second lumen (1221) is threadedly passed through by the through-thread full-thread screw (321); The other end of the through-thread full-thread screw (321) passes through the second through slot (333) of the earthquake-resistant channel steel (33).

6. The seismic-resistant assembled bridge node structure according to claim 4, characterized in that: A first fixing hole is provided on one side of the first stiffener (322) in the thickness direction. The first fixing hole is used for a fixing bolt (3222) to pass through and the first fixing hole is threadedly connected to the fixing bolt (3222). The side of the fixing bolt (3222) away from the fixing nut (3223) abuts against the through-thread full-thread screw (321).

7. The seismic-resistant assembled bridge node structure according to claim 5, characterized in that: A second fixing hole is provided on one side of the second stiffener (323) in the thickness direction. The second fixing hole is used for a fixing bolt (3222) to pass through and the second fixing hole is threadedly connected to the fixing bolt (3222). The side of the fixing bolt (3222) away from the fixing nut (3223) abuts against the through-thread full-thread screw (321).

8. The seismic-resistant assembled bridge node structure according to claim 4, characterized in that: The first anti-seismic hinge (312) comprises a second extension body (3121) fixedly connected to the bridge pier (2) via an expansion bolt (5); the second extension body (3121) is provided with a threaded hole for the expansion bolt (5) to pass through, and the threaded hole is arranged corresponding to the third through hole (22) of the bridge pier (2).

9. The seismic resistant assembled bridge node structure according to claim 1, characterized in that: The connection assembly (31) also includes a second seismic link (312), a third seismic hinge (3122) for fixing one end of the second seismic link (312) to the bridge main beam (1), and a fourth seismic hinge (3123) for fixing the second seismic link (312) to one end of the seismic channel steel (33).

10. A construction method for an earthquake-resistant assembled bridge node structure, characterized in that: The following steps are involved: S1. According to the design drawings, the bridge main beam, bridge piers, seismic brackets, fixings, stiffening components and connection components are manufactured in the factory and transported to the construction site; S2. Position the bridge main beam and the bridge pier according to the design requirements, and set the first connection area and the second connection area in the connection area; S3. A seismic gasket is provided in the first connection area and / or the second connection area, wherein the seismic gasket is provided with at least one interface for receiving a high-strength bolt; S4. Preliminary connection between the bridge main beam and the bridge piers is made through high-strength bolts and seismic gaskets; S5. Install the seismic support, fix one end of the first seismic link to the bridge pier through the first seismic hinge, and fix the other end of the first seismic link to one end of the seismic channel steel through the second seismic hinge; S6. Install the stiffening assembly, fix one end of the stiffening assembly to the bridge main beam, and fix the other end of the stiffening assembly to the seismic channel steel. The stiffening assembly includes at least one through-thread full-thread screw and a first stiffening member and a second stiffening member that penetrate and assemble the through-thread full-thread screw. One end of the through-thread full-thread screw is threadedly connected to a first through hole of the bridge main beam and a first pipe extending from the first through hole. A first lumen is provided in the first pipe for the through-thread full-thread screw to thread through. The other end of the through-thread full-thread screw penetrates the first extension body of the second seismic hinge and the first through groove of the seismic channel steel. S7. Fix the first stiffener and the second stiffener to the through-thread full-thread screw by means of fixing bolts to complete the installation of the seismic bracket and the stiffening assembly; S8. Check all connection parts to ensure that high-strength bolts, seismic gaskets, seismic brackets and stiffening components are firmly installed.

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