Replaceable bridge connecting structure facilitating emergency repair

Abstract

The utility model discloses a replaceable bridge connecting structure convenient to emergency repair, including cast-in-place platform, prefabricated pier column, standard prefabricated pre -stored cover beam and standard prefabricated pre -stored box girder, the top embedded first embedded I -beam and two web clamps of prefabricated pier column, the bottom fixed second embedded I -beam of standard prefabricated pre -stored cover beam, the top of two flange plates of first embedded I -beam all extends to the top of prefabricated pier column, and the web top of first embedded I -beam is used for second embedded I -beam to be inserted after being cut off. The utility model discloses reasonable structure design, the setting of first embedded I -beam, web clamp and second embedded I -beam can realize the quick insertion connection of beam column, when the emergency repair of bridge is carried out, can carry out quick dismantling and replacement to damaged standard prefabricated pre -stored cover beam, can effectively solve the inconvenient dismounting, difficult alignment, unable to realize quick insertion and temporary stabilization of pier column and cover beam connecting node in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering technology, specifically relating to a replaceable bridge connection structure that facilitates emergency repairs. Background Technology

[0002] With the development of prefabricated building technology, the factory prefabrication and on-site assembly model for components such as piers, cap beams, and main beams has been widely used in bridge engineering. This model has advantages such as fast construction speed, easy quality control, and minimal environmental impact in new bridges. However, when bridge components (such as piers and cap beams) are damaged due to sudden events such as earthquakes or vehicle collisions, emergency repairs and replacements of traditional cast-in-place structures or existing prefabricated connection nodes remain extremely difficult. The main problem is: (1) Complex connection nodes and difficult decoupling: Many prefabricated connections aim to achieve permanent overall stress. The reinforcement is intertwined at the nodes and the concrete cast-in-place area is large. After damage, it is difficult to safely and quickly separate the damaged parts from the intact parts.

[0003] (2) Long replacement cycle: Traditional emergency reinforcement or replacement requires a lot of on-site wet work (such as rebar installation and concrete pouring), and the curing time is long, which cannot meet the urgent need for "rapid restoration of traffic" in emergency repair of major traffic arteries.

[0004] (3) High positioning accuracy requirements: The conditions at the emergency repair site are complex. How to ensure that the newly replaced prefabricated components can be accurately positioned and restore the original design elevation and axis is a major challenge in the implementation process.

[0005] Therefore, there is an urgent need for a bridge connection structure that is reasonably designed, reliably connected, and particularly easy to replace quickly in emergency situations. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a replaceable bridge connection structure that is convenient for emergency repair, addressing the shortcomings of the prior art. Its structure is reasonably designed, and the setting of the first embedded I-beam, the web plate, and the second embedded I-beam can realize the quick insertion connection of beams and columns. During emergency repairs of bridges, damaged standard precast precast cap beams can be quickly dismantled and replaced, effectively solving the problems of inconvenient dismantling and assembly, difficult alignment, inability to achieve quick insertion and temporary stability of the connection node between piers and cap beams in the prior art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a replaceable bridge connection structure that facilitates emergency repair, including a cast-in-place abutment, precast piers, a standard precast pre-storage cap beam, and a standard precast pre-storage box girder. The top of the precast pier has a first embedded I-beam and two web plates pre-embedded in it. The two web plates are symmetrically arranged on both sides of the web of the first embedded I-beam. The bottom of the standard precast pre-storage cap beam is fixed with a second embedded I-beam for insertion into the first embedded I-beam. The two flanges of the first embedded I-beam... The top of each of the two embedded I-beams extends to the top of the precast pier column. The top of the web of the first embedded I-beam is cut off to allow the second embedded I-beam to be inserted. The two web plates are respectively arranged on both sides of the web of the second embedded I-beam and are used to limit the second embedded I-beam. The lower end of the second embedded I-beam is limited between the two flanges of the first embedded I-beam. Guide blocks are provided on the outer upper part of the two flanges of the first embedded I-beam. Guide grooves matching the guide blocks are reserved at the lower end of the two flanges of the second embedded I-beam.

[0008] The aforementioned replaceable bridge connection structure, which facilitates emergency repairs, has a pile foundation at the bottom of the cast-in-place pier.

[0009] The aforementioned replaceable bridge connection structure, which facilitates emergency repairs, has multiple steel sleeves pre-embedded in the top of the cast-in-place pier cap, and multiple prestressed steel bars corresponding one-to-one with the steel sleeves pre-embedded in the bottom of the precast pier column.

[0010] The aforementioned replaceable bridge connection structure, which facilitates emergency repairs, has an end plate for installing guide blocks on the outer upper surface of each of the two flange plates of the first embedded I-beam. A stiffening plate is provided between the bottom of the end plate and the flange plate of the first embedded I-beam.

[0011] The aforementioned replaceable bridge connection structure, which facilitates emergency repairs, has perforations on both flanges of the first embedded I-beam for guide blocks to pass through. One end of the guide block passes through the perforation and engages with the guide groove.

[0012] In the aforementioned replaceable bridge connection structure that facilitates emergency repairs, the two flanges of the second embedded I-beam are located between the two flanges of the first embedded I-beam.

[0013] The aforementioned replaceable bridge connection structure, which facilitates emergency repairs, has a web plate that is parallel to the web of the first embedded I-beam.

[0014] This utility model has the following advantages compared with the prior art: 1. This utility model pre-embeds a first pre-embedded I-beam and two web plates at the top of the precast pier, and pre-embeds a second pre-embedded I-beam at the bottom of the standard precast precast cap beam, which is inserted into the first pre-embedded I-beam. During emergency repairs of bridges, the damaged standard precast precast cap beam can be quickly removed and replaced, which can effectively solve the problems of inconvenient disassembly and assembly, difficult alignment, inability to achieve rapid insertion and temporary stability of the connection node between the pier and the cap beam in the existing technology.

[0015] 2. This utility model provides guide blocks on the outer upper sides of the two flange plates of the first embedded I-beam and pre-reserves guide grooves matching the guide blocks on the lower ends of the two flange plates of the second embedded I-beam. The standard precast pre-stored cap beam can be automatically guided, quickly aligned and initially stabilized during hoisting and lowering, which greatly reduces the difficulty and time of high-altitude precise positioning and realizes the "quick insertion" function. This is a key advantage in emergency repairs.

[0016] 3. This utility model has a high degree of modularity. The connection between the precast pier and the cast-in-place foundation, as well as the connection between the standard precast precast cap beam and the precast pier, are all reversible connections. After damage, the damaged parts can be quickly removed and replaced with new parts in reverse order, resulting in extremely high repair efficiency.

[0017] In summary, the present invention has a reasonable structural design. The setting of the first embedded I-beam, the web plate, and the second embedded I-beam enables quick insertion connection of beams and columns. During emergency repairs of bridges, damaged standard precast precast cap beams can be quickly dismantled and replaced. This effectively solves the problems of inconvenient dismantling and assembly, difficult alignment, inability to achieve quick insertion and temporary stability at the connection nodes between piers and cap beams in the existing technology.

[0018] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 for Figure 1 Enlarged view of point A.

[0021] Figure 3 This is a schematic diagram of the connection structure between the standard precast precast cap beam and the precast pier column of this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Pile foundation; 2. Cast-in-place pile cap; 3. Prestressed steel reinforcement; 4. Precast pier column; 5. Stiffening plate; 6. First embedded I-beam; 7. Web plate; 8. End plate; 9. Guide block; 10. Standard precast precast cap beam; 11. Second embedded I-beam; 12. Guide groove; 13. Standard precast precast box girder. Detailed Implementation

[0023] like Figures 1 to 3 As shown, this utility model includes a cast-in-place foundation 2, a precast pier 4, a standard precast pre-storage cap beam 10, and a standard precast pre-storage box girder 13. The top of the precast pier 4 is pre-embedded with a first pre-embedded I-beam 6 and two web plates 7. The two web plates 7 are symmetrically arranged on both sides of the web of the first pre-embedded I-beam 6. The bottom of the standard precast pre-storage cap beam 10 is fixed with a second pre-embedded I-beam 11 for insertion with the first pre-embedded I-beam 6. The tops of the two flanges of the first pre-embedded I-beam 6 extend to the top of the precast pier 4. The top of the web of a pre-embedded I-beam 6 is cut off to allow the insertion of a second pre-embedded I-beam 11. Two web clamps 7 are respectively arranged on both sides of the web of the second pre-embedded I-beam 11 and are used to limit the second pre-embedded I-beam 11. The lower end of the second pre-embedded I-beam 11 is limited between the two flanges of the first pre-embedded I-beam 6. Guide blocks 9 are provided on the outer upper part of the two flanges of the first pre-embedded I-beam 6. Guide grooves 12 matching the guide blocks 9 are reserved at the lower ends of the two flanges of the second pre-embedded I-beam 11.

[0024] In actual use, by pre-embedding a first pre-embedded I-beam 6 and two web plates 7 at the top of the precast pier 4, and pre-embedding a second pre-embedded I-beam 11 at the bottom of the standard precast pre-stored cap beam 10 that is inserted into the first pre-embedded I-beam 6, the damaged standard precast pre-stored cap beam 10 can be quickly removed and replaced during emergency repairs of the bridge. This can effectively solve the problems of inconvenient disassembly and assembly, difficult alignment, inability to achieve rapid insertion and temporary stability of the connection node between the pier and the cap beam in the existing technology.

[0025] It should be noted that by setting guide blocks 9 on the outer upper part of the two flange plates of the first embedded I-beam 6, and reserving guide grooves 12 matching the guide blocks 9 on the lower part of the two flange plates of the second embedded I-beam 11, the standard precast pre-stored cap beam 10 can be automatically guided, quickly aligned and initially stabilized during hoisting and falling, which greatly reduces the difficulty and time of high-altitude precise positioning and realizes the "quick insertion" function, which is a key advantage in emergency repair.

[0026] In practice, the flange plate of the first embedded I-beam 6 is parallel to the flange plate of the second embedded I-beam 11.

[0027] In practice, both web plates 7 are located between the two flange plates of the first embedded I-beam 6.

[0028] In this embodiment, a pile foundation 1 is provided at the bottom of the cast-in-place foundation 2.

[0029] In this embodiment, multiple steel sleeves are pre-embedded at the top of the cast-in-place foundation 2, and multiple prestressed steel bars 3 corresponding to the steel sleeves are pre-embedded at the bottom of the precast pier column 4.

[0030] In actual use, the prestressed steel bar 3 can also be replaced by precision rolled threaded steel bar. The steel sleeve is a high-strength steel sleeve. When connecting the precast pier column 4 and the cast-in-place foundation 2, the precast pier column 4 is hoisted into place, and the prestressed steel bar extending from its bottom is accurately inserted into the steel sleeve on the top surface of the cast-in-place foundation 2. Then, high-strength non-shrink grout is poured into the steel sleeve to form a reliable socket grouting connection.

[0031] like Figure 2 As shown in this embodiment, an end plate 8 for installing a guide block 9 is provided on the outer upper part of the two flange plates of the first embedded I-beam 6, and a stiffening plate 5 is provided between the bottom of the end plate 8 and the flange plate of the first embedded I-beam 6.

[0032] In actual use, the end plate 8 is vertically welded to the outer side of the flange plate of the first embedded I-beam 6, and the stiffening plate 5 is vertically welded to the outer side of the flange plate of the first embedded I-beam 6 and the lower side of the end plate 8.

[0033] In practice, multiple stiffening plates 5 can be installed at the bottom of the end plate 8.

[0034] In this embodiment, both flanges of the first embedded I-beam 6 are provided with through holes for the guide block 9 to pass through. One end of the guide block 9 passes through the through hole and engages with the guide groove 12.

[0035] In actual use, the guide groove 12 penetrates the bottom of the two flange plates of the second embedded I-beam 11.

[0036] It should be noted that the guide block 9 includes a main body part set on the end plate 8 and two guide rods set on the main body part. The guide rods pass through the perforations on the flange plate of the first embedded I-beam 6 and then cooperate with the guide groove 12.

[0037] In practice, the guide block 9 and the guide groove 12 together form a steel tenon and mortise structure. The tenon and mortise structure itself has a certain adjustment margin and is more adaptable to small dimensional deviations of prefabricated components.

[0038] In this embodiment, the two flanges of the second embedded I-beam 11 are located between the two flanges of the first embedded I-beam 6.

[0039] In this embodiment, the web plate 7 is parallel to the web of the first embedded I-beam 6.

[0040] In actual use, the precast pier 4 and the cast-in-place foundation 2 are first connected by a grouting sleeve. Then, the standard precast pre-storage cap beam 10 is hoisted. During the hoisting process, the guide groove 12 at the bottom of the standard precast pre-storage cap beam 10 is aligned with the guide block 9 at the top of the precast pier 4 through observation and fine-tuning. As the standard precast pre-storage cap beam 10 slowly falls, the guide block 9 naturally slides into the guide groove 12, achieving precise positioning.

[0041] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A replaceable bridge connection structure that facilitates emergency repairs, characterized in that: The structure includes a cast-in-place foundation (2), precast piers (4), a standard precast precast cap beam (10), and a standard precast precast box girder (13). The top of the precast pier (4) is pre-embedded with a first precast I-beam (6) and two web plates (7). The two web plates (7) are symmetrically arranged on both sides of the web of the first precast I-beam (6). The bottom of the standard precast precast cap beam (10) is fixed with a second precast I-beam (11) for insertion into the first precast I-beam (6). The tops of the two flanges of the first precast I-beam (6) extend to the top of the precast pier (4). The top of the web of the embedded I-beam (6) is cut off to allow the second embedded I-beam (11) to be inserted. The two web plates (7) are respectively arranged on both sides of the web of the second embedded I-beam (11) and are used to limit the second embedded I-beam (11). The lower end of the second embedded I-beam (11) is limited between the two flanges of the first embedded I-beam (6). The upper outer sides of the two flanges of the first embedded I-beam (6) are provided with guide blocks (9). The lower ends of the two flanges of the second embedded I-beam (11) are reserved with guide grooves (12) that match the guide blocks (9).

2. A replaceable bridge connection structure for easy emergency repair as described in claim 1, characterized in that: The bottom of the cast-in-place foundation (2) is provided with pile foundation (1).

3. A replaceable bridge connection structure for easy emergency repair as described in claim 1, characterized in that: The top of the cast-in-place foundation (2) is pre-embedded with multiple steel sleeves, and the bottom of the precast pier (4) is pre-embedded with multiple prestressed steel bars (3) that correspond one-to-one with the steel sleeves.

4. A replaceable bridge connection structure for easy emergency repair as described in claim 1, characterized in that: An end plate (8) for installing a guide block (9) is provided on the outer upper part of the two flange plates of the first embedded I-beam (6). A stiffening plate (5) is provided between the bottom of the end plate (8) and the flange plate of the first embedded I-beam (6).

5. A replaceable bridge connection structure for easy emergency repair as described in claim 4, characterized in that: The first embedded I-beam (6) has perforations on both flanges for the guide block (9) to pass through. One end of the guide block (9) passes through the perforation and engages with the guide groove (12).

6. A replaceable bridge connection structure for easy emergency repair as described in claim 1, characterized in that: The two flanges of the second embedded I-beam (11) are located between the two flanges of the first embedded I-beam (6).

7. A replaceable bridge connection structure for easy emergency repair as described in claim 1, characterized in that: The web plate (7) is parallel to the web of the first embedded I-beam (6).

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