Energy dissipation type assembled anti-seismic block structure system and construction method thereof

Abstract

The application discloses a kind of energy dissipation type assembled anti-seismic block structure systems and its construction method, it is related to the technical field of bridge anti-seismic, first body includes the first embedded structure and first main structure by anchor bolt connection, second body includes the second embedded structure and second main structure by anchor bolt connection, first embedded structure and second embedded structure are all included embedded plate and hook buckle, first main structure includes the first box body with reinforcing rib plate and compression-resistant filler inside;Second main structure includes the second box body with grid body and energy dissipation filler inside;Its construction method includes: first, first embedded structure and second embedded structure are embedded and installed in beam body and pier specified design position again concrete pouring, then first main structure and second main structure are installed to first embedded structure and second embedded structure corresponding.The application solves the problem that bridge falls beam due to the failure of conventional anti-seismic block caused by brittle shear failure.

Description

Technical Field

[0001] This invention relates to the technical field of bridge seismic resistance, and is applicable to various types of bridge structures such as railways and highways. In particular, it relates to an energy-dissipating prefabricated seismic-resistant block structure system and its construction method. Background Technology

[0002] Beam bridges are widely used in railway and highway engineering projects due to their simple structure, good integrity, and comfortable driving experience. However, because the connection between the superstructure and substructure of beam bridges is not robust and their overall integrity is poor, significant relative displacement can occur between the superstructure and substructure under earthquake loads, leading to bridge damage and even beam collapse. To ensure bridge safety, measures should be taken to limit the movement of the beams under earthquake loads and prevent excessive displacement.

[0003] Current technology typically employs seismic blocks, placing several brittle concrete blocks between the bridge beam and the pier tops to control beam displacement within a certain range. However, this method has several drawbacks: under strong earthquakes, the beam collides with the blocks, causing the brittle concrete blocks to fail due to brittle shear failure, potentially leading to bridge collapse. Furthermore, conventional seismic blocks have long installation cycles, numerous components, and are difficult to repair in emergencies; they also offer little to no energy absorption or dissipation capability.

[0004] Therefore, the applicant proposes an energy-dissipating prefabricated seismic retaining block structure system and its construction method to solve the above-mentioned technical defects. Summary of the Invention

[0005] The technical problem to be solved by this invention is to address the above-mentioned shortcomings of the prior art by proposing an energy-dissipating prefabricated seismic abutment structure system and its construction method. This invention can solve the problem that brittle concrete abutments fail due to brittle shear failure after a collision, leading to bridge beam collapse. It also makes up for the shortcomings of conventional seismic abutments, such as slow installation speed and difficult maintenance, and provides a new idea and technical guarantee for bridge beam collapse prevention measures.

[0006] To achieve its purpose, the present invention adopts the following technical solution:

[0007] An energy-dissipating prefabricated seismic-resistant block structure system includes:

[0008] The first body includes a first embedded structure and a first main body structure. The first embedded structure includes a hook buckle and an embedded plate. One end of the hook buckle is fixedly connected to the surface of the embedded plate. The first main body structure includes a first box and a docking plate. The first box is fixedly disposed on the surface of the docking plate. Both the embedded plate and the docking plate are provided with corresponding anchor bolt holes. Anchor bolts are installed in the anchor bolt holes to connect and assemble the first embedded structure and the first main body structure.

[0009] The first housing is equipped with reinforcing ribs inside, and the reinforcing ribs are filled with compressive filler.

[0010] The second body includes a second embedded structure and a second main body structure. The second embedded structure includes a hook buckle and an embedded plate. The hook buckle is fixedly installed on the surface of the embedded plate. The second main body structure includes a second box and a docking plate. The second box is fixedly installed on the surface of the docking plate. The embedded plate and the docking plate are provided with corresponding anchor bolt holes. Anchor bolts are installed in the anchor bolt holes to connect and assemble the second embedded structure and the second main body structure.

[0011] The second housing has a mesh structure inside, and the mesh structure is filled with energy-dissipating filler.

[0012] In use, the first body is located on both sides of the second body, the first pre-embedded structure is pre-embedded in the bridge beam, and the second pre-embedded structure is pre-embedded in the top of the bridge pier.

[0013] Preferably, the two hooks are arranged as a group, and their bent portions are arranged in opposite directions, with each group of hooks evenly distributed on the embedded plate.

[0014] Preferably, both the first and second pre-embedded structures include a horizontal connecting rod and a sleeve. The horizontal connecting rod is fixedly connected to the bent part of the hook buckle, and the sleeve is fixedly connected at the position where the anchor bolt hole is set in the pre-embedded plate.

[0015] Preferably, a flexible pad is fixedly provided on one end of the first box, and a flexible pad is wrapped around the outer surface of the end of the second box away from the docking plate.

[0016] Preferably, the second housing has symmetrical slots on both sides, and the size of the slots is adapted to the size of the first housing.

[0017] Preferably, the flexible pad of the first housing has several protrusions distributed on it.

[0018] This invention also provides a construction method for an energy-dissipating prefabricated seismic-resistant block structure system, comprising the following steps:

[0019] ① Before the concrete is poured into the bridge beam, the first pre-embedded structure is pre-installed to the designated design position by setting out, and the hook buckle and horizontal connecting rod in the first pre-embedded structure are fixed to the steel bars in the beam to form a whole;

[0020] ② Before pouring concrete on the top of the bridge pier, the second pre-embedded structure is pre-installed to the designated design position by setting out, and the hook buckle and horizontal connecting rod in the second pre-embedded structure are fixed to the steel bars in the pier to form a whole;

[0021] ③ After the concrete is poured, the first main structure and the second main structure are installed onto the first embedded structure and the second embedded structure respectively using anchor bolts;

[0022] ④ Install pad stones on both sides of the second main structure above the piers. Under earthquake action, the seismic blocks will limit the relative displacement between the piers and beams, and together with the pad stones, they will play a limiting role.

[0023] ⑤ After the earthquake, depending on the extent of damage, the anchor bolts can be removed and the first and second main structures replaced;

[0024] ⑥ When the bridge beam needs to be supported, the anchor bolts, the first main structure and the second main structure of the prefabricated seismic blocking block can be removed, and the operation can be carried out at the spatial position of the prefabricated seismic blocking block.

[0025] The beneficial effects of this invention are:

[0026] (1) The prefabricated seismic block structure of the present invention has two first bodies that can restrict the lateral movement of the second body, that is, restrict the relative movement of the beam and the pier under the action of earthquake, avoid excessive relative displacement between the beam and the pier, and thus avoid bridge damage and beam collapse; the first box is provided with reinforcing ribs and filled with compressive filler, which enhances the compressive and shear resistance of the prefabricated seismic block, and avoids brittle shear failure of the prefabricated seismic block caused by the collision between the beam and the block under strong earthquake; at the same time, the second box is provided with a grid and filled with energy-dissipating filler. The grid and the energy-dissipating filler interact with each other. When an earthquake occurs, they consume and absorb part of the earthquake energy through their own destruction and deformation, thereby ensuring that the bridge does not suffer major damage.

[0027] (2) The first body and the second body of the present invention are both separate structures. The pre-embedded structure and the main structure are assembled or disassembled by anchor bolts. The installation steps are simple and quick. After each component arrives at the site, it can be quickly assembled. The construction and assembly are convenient and quick, which can effectively improve construction efficiency, shorten the project period and reduce construction costs. In addition, after an earthquake, the corresponding damaged modules can be quickly replaced according to the actual situation to achieve rapid repair in emergency situations and provide safety guarantee.

[0028] (3) The present invention uses a single prefabricated seismic blocking block structure as the basic unit module. According to the seismic design requirements, multiple modules can be combined and used, and the scope of application is wide.

[0029] (4) The present invention has a simple overall structure, low cost, and is easy to inspect and maintain. Attached Figure Description

[0030] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0031] Figure 1 This is a three-dimensional structural diagram of this embodiment;

[0032] Figure 2 This is an exploded view of the first body in this embodiment;

[0033] Figure 3 This is an exploded view of the second body in this embodiment;

[0034] Figure 4 for Figure 1 Side view;

[0035] Figure 5 for Figure 4 Cross-sectional view at point AA;

[0036] Figure 6 This is a side view showing the installation effect on the bridge piers and beams in this embodiment;

[0037] Figure 7 This is a front view showing the installation effect on the bridge piers and beams in this embodiment;

[0038] In the picture:

[0039] 1-First body; 2-Second body; 3-Anchor bolt; 4-First embedded structure; 5-First main structure; 6-Second embedded structure; 7-Second main structure; 8-Hook buckle; 9-Embedded plate; 10-First box; 11-Butt plate; 12-Anchor bolt hole; 13-Reinforcing rib; 14-Compression filling; 15-Second box; 16-Grid; 17-Energy dissipating filling; 18-Horizontal connecting rod; 19-Sleeve; 20-Flexible pad; 21-Slot; 22-Protrusion; 23-Beam; 24-Pier; 25-Slate. Detailed Implementation

[0040] The following are specific embodiments of the present invention described in conjunction with the accompanying drawings, further illustrating the technical solutions of the present invention. However, the present invention is not limited to these embodiments. Specific details, such as particular configurations and components, are provided in the following description merely to aid in a comprehensive understanding of the embodiments of the present invention. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Furthermore, for clarity and brevity, descriptions of known functions and structures have been omitted.

[0041] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0042] like Figure 1-7 The figure shown is an energy-dissipating prefabricated seismic-resistant block structure system provided in this embodiment, including two first bodies 1, one second body 2 and multiple anchor bolts 3;

[0043] The first body 1 is a separate structure, including a first embedded structure 4 and a first main structure 5. The first embedded structure 4 includes a hook buckle 8 and an embedded plate 9. One end of the hook buckle 8 is fixedly connected to the surface of the embedded plate 9. The first main structure 5 includes a first box 10 and a docking plate 11. The first box 10 is fixedly disposed on the surface of the docking plate 11. Both the embedded plate 9 and the docking plate 11 are provided with corresponding anchor bolt holes 12. Anchor bolts 3 are installed in the anchor bolt holes 12 to connect and assemble the first embedded structure 4 and the first main structure 5. The first box 10 is provided with a reinforcing rib 13 inside, and the reinforcing rib 13 is filled with a compressive filler 14.

[0044] The second body 2 is also a separate structure, including a second embedded structure 6 and a second main body structure 7. The second embedded structure 6 includes a hook buckle 8 and an embedded plate 9. The hook buckle 8 is fixedly installed on the surface of the embedded plate 9. The second main body structure 7 includes a second box 15 and a docking plate 11. The second box 15 is fixedly installed on the surface of the docking plate 11. Both the embedded plate 9 and the docking plate 11 are provided with corresponding anchor bolt holes 12. Anchor bolts 3 are installed in the anchor bolt holes 12 to connect and assemble the second embedded structure 6 and the second main body structure 7. The second box 15 is provided with a mesh 16 inside, and the mesh 16 is filled with energy-dissipating filler 17.

[0045] In use, two first bodies 1 are located on either side of the second body 2, with a certain distance between them. The first embedded structure 4 is pre-embedded in the bridge beam 23, and the second embedded structure 6 is pre-embedded in the top of the pier 24. Therefore, under seismic action, the two first bodies 1 can restrict the lateral movement of the second body 2, that is, restrict the relative movement of the beam 23 and the pier 24 under seismic action. The maximum relative displacement between them is the distance between the first body 1 and the second body 2, avoiding excessive relative displacement between the beam 23 and the pier 24, thereby preventing bridge damage and beam collapse. Furthermore, the first box 10 is equipped with reinforcing ribs 13 and filled with compressive filler 14, forming a solid structure, which enhances the compressive strength and anti-seismic resistance of the prefabricated seismic block. The shear capacity prevents brittle shear failure of the prefabricated seismic abutment block due to collision between the beam 23 and the abutment block under strong earthquakes. Simultaneously, the second box 15 has an internal grid 16 filled with energy-dissipating filler 17, forming a solid structure. The grid 16 and energy-dissipating filler 17 interact and may even break, thus absorbing and dissipating some of the seismic energy. Both the first body 1 and the second body 2 are separate structures, and assembly or disassembly between the first embedded structure 4 and the first main structure 5, and between the second embedded structure 6 and the second main structure 7, are achieved through anchor bolts 3. The installation steps are simple and quick. After each component arrives on site, prefabricated construction can be carried out rapidly. Furthermore, after an earthquake, damaged modules can be quickly replaced according to the actual situation, enabling rapid repairs in emergency situations and providing safety assurance.

[0046] Furthermore, in this embodiment, the two hook buckles 8 are grouped together, and their bent portions are arranged in opposite directions. Each group of hook buckles 8 is evenly distributed on the embedded plate 9, making the connection strength between the first embedded structure 4 and the bridge stronger and the stress more uniform. The first embedded structure 4 and the second embedded structure 6 both include a horizontal connecting rod 18 and a sleeve 19. The horizontal connecting rod 18 is fixedly connected to the bent portion of the hook buckle 8. The horizontal connecting rod 18 and the hook buckle 8 form a spatial integral structure, which increases the bonding area with the concrete after pouring, further enhancing the connection strength between the first body 1 and the bridge. The sleeve 19 is fixedly connected at the position where the anchor bolt hole 12 is set on the embedded plate 9 to protect the anchor bolt 3 and prevent the tail end of the anchor bolt 3 from being poured together with the concrete, which would hinder the disassembly and assembly of the first main structure 5 and the second main structure 7.

[0047] Furthermore, a flexible pad 20 is fixedly provided on one end of the first box body 10, and a flexible pad 20 is wrapped around the outer surface of the end of the second box body 15 away from the docking plate 11. The flexible pad 20 can ensure that the bridge can freely expand and contract under normal use. Several protrusions 22 are distributed on the flexible pad 20 of the first box body 10, which play a buffering role when the first box body 10 and the second box body 15 collide.

[0048] Furthermore, the second box 15 is provided with symmetrical slots 21 on both sides. The size of the slots 21 is adapted to the size of the first box 10. When the bridge moves relative to the pier 24, the first main structure 5 moves accordingly, and can move up to the corresponding slot 21. That is, the slots 21 play a limiting role to prevent the first main structure 5 and the bridge from undergoing large displacement.

[0049] The construction method of the above-mentioned energy-dissipating prefabricated seismic-resistant block structure system includes the following steps:

[0050] ① Before pouring concrete for the bridge beam 23, the first embedded structure 4 is pre-installed to the designated design position by setting out, and the hook buckle 8 and horizontal connecting rod 18 in the first embedded structure 4 are fixed to the steel bars in the beam 23 to form a whole;

[0051] ② Before pouring concrete on the top of pier 24 of the bridge, the second pre-embedded structure 6 is pre-installed to the designated design position by setting out, and the hook buckle 8 and horizontal connecting rod 18 in the second pre-embedded structure 6 are fixed to the steel bars in pier 24 to form a whole;

[0052] ③ After the concrete is poured, the first main structure 5 and the second main structure 7 are respectively installed onto the first embedded structure 4 and the second embedded structure 6 using anchor bolts 3;

[0053] ④ Install pad stones 25 on both sides of the second main structure 7 above the pier 24. Under the action of earthquake, the seismic blocks restrict the relative displacement between the pier and the beam, and together with the pad stones 25, they play a limiting role.

[0054] ⑤ After the earthquake, depending on the extent of damage, anchor bolt 3 can be removed and replaced with the first main structure 5 and the second main structure 7.

[0055] ⑥ When the bridge beam 23 needs to be supported, the anchor bolts 3, the first main structure 5 and the second main structure 7 of the prefabricated seismic blocking block can be removed, and the operation can be carried out at the spatial position of the prefabricated seismic blocking block.

[0056] The construction method of the energy-dissipating prefabricated seismic retaining block structure system in this embodiment is simple in steps, convenient and quick in construction and assembly, and can effectively improve construction efficiency, shorten project period and reduce construction cost.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] In the description of this application, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] The specific embodiments described herein are merely illustrative examples of the spirit of this application. Those skilled in the art to which this application pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this application or exceeding the scope defined by the appended claims.

Claims

1. An energy-dissipating prefabricated seismic-resistant block structure system, characterized in that, include: The first body (1) includes a first embedded structure (4) and a first main structure (5). The first embedded structure (4) includes a hook buckle (8) and an embedded plate (9). One end of the hook buckle (8) is fixedly connected to the surface of the embedded plate (9). The first main structure (5) includes a first box (10) and a docking plate (11). The first box (10) is fixedly disposed on the surface of the docking plate (11). The embedded plate (9) and the docking plate (11) are both provided with corresponding anchor bolt holes (12). Anchor bolts (3) are installed in the anchor bolt holes (12) to connect and assemble the first embedded structure (4) and the first main structure (5). The first box (10) is provided with a reinforcing rib (13) inside, and the reinforcing rib (13) is filled with a compressive filler (14). The second body (2) includes a second embedded structure (6) and a second main body structure (7). The second embedded structure (6) includes a hook buckle (8) and an embedded plate (9). The hook buckle (8) is fixedly installed on the surface of the embedded plate (9). The second main body structure (7) includes a second box (15) and a docking plate (11). The second box (15) is fixedly installed on the surface of the docking plate (11). The embedded plate (9) and the docking plate (11) are both provided with corresponding anchor bolt holes (12). Anchor bolts (3) are installed in the anchor bolt holes (12) to connect and assemble the second embedded structure (6) and the second main body structure (7). The second box (15) has a mesh (16) inside, and the mesh (16) is filled with energy-dissipating filler (17). In use, the first body (1) is located on both sides of the second body (2), the first pre-embedded structure (4) is pre-embedded in the bridge beam (23), and the second pre-embedded structure (6) is pre-embedded in the top of the pier (24); The second box (15) has symmetrical slots (21) on both sides, and the size of the slots (21) is adapted to the size of the first box (10).

2. The energy-dissipating prefabricated seismic-resistant block structure system according to claim 1, characterized in that, Two hook buckles (8) are set together, and their bent parts are set in opposite directions. Each set of hook buckles (8) is evenly arranged on the embedded plate (9).

3. The energy-dissipating prefabricated seismic-resistant block structure system according to claim 2, characterized in that, Both the first pre-embedded structure (4) and the second pre-embedded structure (6) include a horizontal connecting rod (18) and a sleeve (19). The horizontal connecting rod (18) is fixedly connected to the bent part of the hook buckle (8), and the sleeve (19) is fixedly connected at the position where the anchor bolt hole (12) is set on the pre-embedded plate (9).

4. The energy-dissipating prefabricated seismic-resistant block structure system according to claim 1, characterized in that, A flexible pad (20) is fixedly provided on one side end of the first box (10), and a flexible pad (20) is wrapped around the outer surface of the end of the second box (15) away from the docking plate (11).

5. The energy-dissipating prefabricated seismic-resistant block structure system and its construction method according to claim 4, characterized in that, The flexible pad (20) of the first box (10) has several protrusions (22).

6. A construction method for an energy-dissipating prefabricated seismic-resistant block structure system as described in any one of claims 1 to 5, characterized in that, Includes the following steps: ① Before pouring concrete into the bridge beam (23), the first pre-embedded structure (4) is pre-installed to the designated design position by setting out, and the hook buckle (8) and horizontal connecting rod (18) in the first pre-embedded structure (4) are fixed to the steel bars in the beam (23) to form a whole; ② Before pouring concrete on the top of the bridge pier (24), the second pre-embedded structure (6) is pre-installed to the designated design position by setting out, and the hook buckle (8) and horizontal connecting rod (18) in the second pre-embedded structure (6) are fixed on the steel bars in the pier (24) to form a whole; ③After the concrete is poured, the first main structure (5) and the second main structure (7) are installed onto the first embedded structure (4) and the second embedded structure (6) respectively by anchor bolts (3); ④ Install pad stones (25) on both sides of the second main structure (7) above the pier (24). Under the action of earthquake, the seismic blocks restrict the relative displacement between the pier and the beam, and together with the pad stones (25), they play a limiting role. ⑤ After the earthquake, depending on the damage, remove the anchor bolts (3) and replace the first main structure (5) and the second main structure (7). ⑥ When the bridge beam (23) needs to be supported, remove the anchor bolts (3), the first main structure (5) and the second main structure (7) of the prefabricated seismic block, and perform the operation at the spatial position of the prefabricated seismic block.

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