A convertible bridge pier cap beam structure

Abstract

This utility model provides a convertible bridge pier cap beam structure, belonging to the field of bridge engineering technology. It includes a prefabrication mechanism, comprising a prefabricated beam, snap-fit ​​blocks fixedly connected to both sides of the prefabricated beam, a grouting groove on the surface of the prefabricated beam, a replacement groove on the side wall of the prefabricated beam, and auxiliary components disposed on the surface of the prefabricated beam. This utility model, through the setup of the prefabrication and support mechanisms, achieves rapid conversion of bridge support forms and settlement compensation. The prefabricated beam and steel box adopt a dual fixing method of snap-fit ​​locking combined with concrete grouting, ensuring connection strength while simplifying the construction process. The replacement components adopt an adjustable stiffener layout design, with quick-fixing of the replacement stiffeners via transmission nuts to meet different load requirements. The hydraulic support system can adjust the height in real time to compensate for foundation settlement, and, in conjunction with shock-absorbing components, effectively absorbs vibration energy, improving structural adaptability and durability.

Description

Technical Field

[0001] This utility model belongs to the field of bridge engineering technology, specifically relating to a convertible bridge pier cap beam structure. Background Technology

[0002] As a key component in bridge engineering, the cap beam originated from the crossbeam structure of ancient wooden and stone bridges. With the advancement of materials science and engineering technology, it has gradually evolved into reinforced concrete and prestressed concrete forms. Modern cap beam design places greater emphasis on seismic resistance, durability, and lightweighting. Its development has progressed from simple support to complex stress analysis, and the application of computer-aided design and finite element analysis has further optimized its structural performance. Cap beams are widely used in highway bridges, railway bridges, overpasses, and viaducts, primarily to support the load of the superstructure and transfer it to the piers or columns. They play a particularly important role in multi-span continuous beam bridges and simply supported beam bridges, and their design requires comprehensive consideration of load distribution, environmental factors, and construction conditions.

[0003] Cast-in-place concrete cap beams require on-site formwork and pouring, resulting in a long construction period and being subject to weather conditions. While precast cap beams can shorten the construction period, their fixed structural form makes it difficult to adapt to the conversion requirements of different bridge pier and abutment types. Under adverse geological conditions such as soft soil foundations, conventional cap beams lack an effective settlement compensation mechanism, which can easily lead to uneven bridge decks. Therefore, a convertible bridge pier and abutment cap beam structure has emerged. Utility Model Content

[0004] The purpose of this utility model is to provide a convertible bridge pier cap beam structure, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A convertible bridge pier cap beam structure includes,

[0007] The prefabrication mechanism includes a prefabricated beam, snap-fit ​​blocks fixedly connected to both sides of the prefabricated beam, a grouting groove formed on the surface of the prefabricated beam, a replacement groove formed on the side wall of the prefabricated beam, and auxiliary components provided on the surface of the prefabricated beam.

[0008] The support mechanism includes a limiting post fixedly connected to the bottom of the precast beam, a sleeve sleeved on the surface of the limiting post, a mounting plate fixedly connected to the bottom of the sleeve, a hydraulic cylinder fixedly connected to the side wall of the mounting plate, an ejector block fixedly connected to the end of the hydraulic cylinder, a shock-absorbing assembly fixedly connected to both sides of the mounting plate, a replacement assembly movably connected to the inner wall of the replacement groove, and a locking assembly disposed on the inner wall of the replacement assembly.

[0009] The replacement assembly includes a steel box movably connected to the inner wall of the replacement slot, a snap-fit ​​groove provided on the side wall of the steel box, a splicing interface provided on the surface of the steel box, a cover plate movably connected to the inner wall of the splicing interface, a transmission nut connected to the inner wall of the steel box via a bearing, and a stud fixedly connected to the bottom of the transmission nut.

[0010] As a preferred embodiment of this utility model, the auxiliary component includes a push port formed on the inner walls of both sides of the replacement groove, a push spring fixedly connected to the inner wall of the push port, and a rounded top block fixedly connected to the end of the push spring.

[0011] As a preferred embodiment of this utility model, the auxiliary component further includes a reserved opening disposed on the side wall of the precast beam, a limiting block fixedly connected to the inner wall of the reserved opening, and a filler disposed on the side wall of the precast beam.

[0012] As a preferred embodiment of this utility model, the shock absorption assembly includes a fixing plate fixedly connected to both sides of the mounting plate, and a sliding column fixedly connected to the side wall of the fixing plate.

[0013] As a preferred embodiment of the present invention, the shock-absorbing assembly further includes a shock-absorbing spring sleeved on the surface of the sliding column, and a shock-absorbing shell fixedly connected to the side wall of the shock-absorbing spring.

[0014] As a preferred embodiment of this utility model, the locking assembly includes a groove formed in the inner wall of the steel box, a guide rod fixedly connected to the inner wall of the groove, and a slider slidably connected to the surface of the guide rod.

[0015] As a preferred embodiment of this utility model, the locking assembly further includes a guide post fixedly connected to the side wall of the slider, a reset spring fixedly connected to the end of the guide post, and a replacement rib plate movably connected to the inner wall of the slide groove.

[0016] Compared with existing technologies, the advantages of this utility model are as follows: By setting up prefabrication and support mechanisms, rapid conversion of bridge support forms and settlement compensation are achieved. The prefabricated beams and steel boxes adopt a dual fixing method of snap-fit ​​locking combined with concrete pouring, which not only ensures connection strength but also simplifies the construction process. The replacement components adopt an adjustable stiffener layout design, and the stiffeners can be quickly fixed and replaced by transmission nuts to meet different load requirements. The hydraulic support system can adjust the height in real time to compensate for foundation settlement. Combined with shock absorption components, it effectively absorbs vibration energy, improves structural adaptability and durability, and realizes factory prefabrication, rapid assembly and flexible conversion of bridge substructures. It significantly shortens the construction cycle and reduces dependence on on-site operating conditions. It is particularly suitable for bridge projects with complex geological conditions or those that require frequent changes in support forms. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the auxiliary components of this utility model;

[0020] Figure 3 This is a schematic diagram of the shock absorption component of this utility model;

[0021] Figure 4 This is a schematic diagram of the replacement component of this utility model.

[0022] In the diagram: 100, Precast mechanism; 101, Precast beam; 102, Clip-on block; 103, Grouting groove; 104, Replacement groove; 105, Auxiliary component; 105a, Pushing port; 105b, Pushing spring; 105c, Rounded corner push block; 105d, Reserved opening; 105e, Limiting block; 105f, Filling port; 200, Support mechanism; 201, Limiting post; 202, Sleeve; 203, Mounting plate; 204, Hydraulic cylinder; 205, Pushing block; 206, Reduction... Vibration assembly; 206a, fixed plate; 206b, sliding column; 206c, damping spring; 206d, damping shell; 207, replacement assembly; 207a, steel box; 207b, snap-fit ​​groove; 207c, splicing interface; 207d, cover plate; 207e, transmission nut; 207f, stud; 208, locking assembly; 208a, slide groove; 208b, guide rod; 208c, slider; 208d, guide column; 208e, return spring; 208f, replacement rib plate. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Example

[0027] Reference Figures 1-4 This embodiment of the present invention provides a convertible bridge pier cap beam structure, comprising:

[0028] The prefabrication mechanism 100 includes a prefabricated beam 101, snap-fit ​​blocks 102 fixedly connected to both sides of the prefabricated beam 101, a grouting groove 103 opened on the surface of the prefabricated beam 101, a replacement groove 104 opened on the side wall of the prefabricated beam 101, and an auxiliary component 105 disposed on the surface of the prefabricated beam 101.

[0029] The support mechanism 200 includes a limiting post 201 fixedly connected to the bottom of the precast beam 101, a sleeve 202 sleeved on the surface of the limiting post 201, a mounting plate 203 fixedly connected to the bottom of the sleeve 202, a hydraulic cylinder 204 fixedly connected to the side wall of the mounting plate 203, an ejector block 205 fixedly connected to the end of the hydraulic cylinder 204, a shock-absorbing assembly 206 fixedly connected to both sides of the mounting plate 203, a replacement assembly 207 movably connected to the inner wall of the replacement groove 104, and a locking assembly 208 disposed on the inner wall of the replacement assembly 207.

[0030] The replacement component 207 includes a steel box 207a movably connected to the inner wall of the replacement slot 104, a snap-fit ​​groove 207b provided on the side wall of the steel box 207a, a splicing interface 207c provided on the surface of the steel box 207a, a cover plate 207d movably connected to the inner wall of the splicing interface 207c, a transmission nut 207e connected to the inner wall of the steel box 207a via a bearing, and a stud 207f fixedly connected to the bottom of the transmission nut 207e.

[0031] Specifically, the snap-fit ​​groove 207b is designed to facilitate the sliding of the rounded corner block into the snap-fit ​​groove 207b when the top spring 105b pushes the rounded corner block, thereby pushing the steel box 207a and ensuring the stability of the connection between the steel box 207a and the precast beam 101; the splice interface 207c is designed to facilitate the connection with the cover plate 207d, thereby ensuring the sealing of the inner cavity of the steel box 207a.

[0032] Furthermore, the auxiliary component 105 includes a jacking port 105a opened on the inner walls of both sides of the replacement groove 104, a top spring 105b fixedly connected to the inner wall of the jacking port 105a, and a rounded top block 105c fixedly connected to the end of the top spring 105b. The auxiliary component 105 also includes a reserved port 105d provided on the side wall of the precast beam 101, a limiting block 105e fixedly connected to the inner wall of the reserved port 105d, and a filling port 105f provided on the side wall of the precast beam 101.

[0033] Preferably, a grouting port and a filling port 105f are provided on the surface of the cover plate 207d. When the cover plate 207d is closed, the grouting port and filling port 105f of the cover plate 207d and the grouting port and filling port 105f of the surface of the precast beam 101 will be spliced ​​into a complete rectangle, so that concrete can be poured in, thereby ensuring the stability of the connection between the replacement component 207 and the precast beam 101.

[0034] The shock absorption assembly 206 includes a fixed plate 206a fixedly connected to both sides of the mounting plate 203, and a sliding column 206b fixedly connected to the side wall of the fixed plate 206a. The shock absorption assembly 206 also includes a shock absorption spring 206c sleeved on the surface of the sliding column 206b, and a shock absorption shell 206d fixedly connected to the side wall of the shock absorption spring 206c.

[0035] The locking assembly 208 includes a slide groove 208a formed in the inner wall of the steel box 207a, a guide rod 208b fixedly connected to the inner wall of the slide groove 208a, and a slider 208c slidably connected to the surface of the guide rod 208b. The locking assembly 208 also includes a guide post 208d fixedly connected to the side wall of the slider 208c, a return spring 208e fixedly connected to the end of the guide post 208d, and a replacement rib plate 208f movably connected to the inner wall of the slide groove 208a.

[0036] It should be noted that one end of the replacement stiffener 208f is provided with a latch, and the other end is provided with a threaded notch. The replacement stiffener 208f is connected to the stud 207f through the thread, ensuring that when the transmission nut 207e is rotated, the stud 207f can be rotated. The rotation of the stud 207f, in conjunction with the thread, can drive the replacement stiffener 208f to move up and down, facilitating the replacement of the replacement stiffener 208f. The replacement stiffener 208f can be used to place the reinforcing bars in different positions according to stress requirements.

[0037] In use, depending on the different piers and abutments, the corresponding stiffening plates are stacked and placed into the steel box 207a. Rotating the transmission nut 207e rotates the stud 207f, which in turn fixes the replacement stiffening plate 208f inside the steel box 207a. The return spring 208e pushes the guide post 208d, which in turn pushes the slider 208c. The slider 208c, in conjunction with the guide rod 208b, moves forward. When the slider 208c reaches its furthest point, its bottom abuts against the replacement stiffening plate 208f, further securing it. The steel box 207a is then placed in the replacement slot 104 of the precast beam 101, and the cover plate 2 is closed. When 07d is closed, the top spring 105b pushes the rounded corner slider 208c, and the slider 208c is engaged in the locking groove 207b, fixing the steel box 207a. Concrete is poured in the grouting port and filling port 105f. After the pouring is completed, the device is installed on the pier or abutment, and the bridge body is installed on the device. When the device is under force, it pushes the sliding column 206b to move. The sliding column 206b transmits the force to the damping spring 206c. The damping spring 206c undergoes elastic deformation, offsetting part of the force. When the pier or abutment settles, the hydraulic cylinder 204 extends, pushing the precast beam 101 upward to compensate for the settlement.

[0038] In summary, the prefabrication mechanism 100 and the support mechanism 200 enable rapid conversion between the pier and abutment cap beam forms. The locking blocks 102 on both sides of the prefabricated beam 101 and the locking grooves 207b of the steel box 207a are automatically locked by rounded corner blocks 105c, forming a stable connection with the pouring of concrete. The replacement component 207 adopts a modular steel box 207a design, with a built-in adjustable replacement stiffener 208f. The replacement stiffener 208f is quickly fixed via a transmission nut 207e and a stud 207f, meeting different requirements. To meet the force requirements, the hydraulic cylinder 204 of the support mechanism 200 can dynamically compensate for foundation settlement. The damping component 206 absorbs vibration energy through the sliding column 206b and the damping spring 206c. During construction, only the precast beam 101, the filling steel box 207a stiffening plate, and the concrete pouring are needed to complete the form conversion, which greatly shortens the curing cycle of traditional cast-in-place structures. Moreover, the standardized precast components enable the rapid assembly and form switching of the bridge substructure, which is particularly suitable for temporary bridges or geologically unstable areas that require frequent changes in support form.

[0039] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0040] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0041] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A convertible pier deck girder structure, characterized by: include, The prefabrication mechanism (100) includes a prefabricated beam (101), snap-fit ​​blocks (102) fixedly connected to both sides of the prefabricated beam (101), a grouting groove (103) opened on the surface of the prefabricated beam (101), a replacement groove (104) opened on the side wall of the prefabricated beam (101), and auxiliary components (105) provided on the surface of the prefabricated beam (101). The support mechanism (200) includes a limiting post (201) fixedly connected to the bottom of the precast beam (101), a sleeve (202) sleeved on the surface of the limiting post (201), a mounting plate (203) fixedly connected to the bottom of the sleeve (202), a hydraulic cylinder (204) fixedly connected to the side wall of the mounting plate (203), an ejector block (205) fixedly connected to the end of the hydraulic cylinder (204), a shock-absorbing assembly (206) fixedly connected to both sides of the mounting plate (203), a replacement assembly (207) movably connected to the inner wall of the replacement groove (104), and a locking assembly (208) provided on the inner wall of the replacement assembly (207). The replacement assembly (207) includes a steel box (207a) movably connected to the inner wall of the replacement groove (104), a snap-fit ​​groove (207b) provided on the side wall of the steel box (207a), a splicing interface (207c) provided on the surface of the steel box (207a), a cover plate (207d) movably connected to the inner wall of the splicing interface (207c), a transmission nut (207e) connected to the inner wall of the steel box (207a) via a bearing, and a stud (207f) fixedly connected to the bottom of the transmission nut (207e).

2. A convertible pier deck girder structure according to claim 1, wherein: The auxiliary component (105) includes a top-moving port (105a) formed on the inner walls of both sides of the replacement groove (104), a top spring (105b) fixedly connected to the inner wall of the top-moving port (105a), and a rounded top block (105c) fixedly connected to the end of the top spring (105b).

3. A convertible pier deck girder structure according to claim 2, wherein: The auxiliary component (105) also includes a reserved opening (105d) provided on the side wall of the precast beam (101), a limiting block (105e) fixedly connected to the inner wall of the reserved opening (105d), and a filling opening (105f) provided on the side wall of the precast beam (101).

4. The convertible bridge pier cap beam structure according to claim 3, characterized in that: The shock absorption assembly (206) includes a fixed plate (206a) fixedly connected to both sides of the mounting plate (203), and a sliding column (206b) fixedly connected to the side wall of the fixed plate (206a).

5. A convertible pier deck girder structure according to claim 4, wherein: The damping assembly (206) also includes a damping spring (206c) sleeved on the surface of the sliding column (206b) and a damping shell (206d) fixedly connected to the side wall of the damping spring (206c).

6. A convertible pier deck girder structure according to claim 5, wherein: The locking assembly (208) includes a groove (208a) formed in the inner wall of the steel box (207a), a guide rod (208b) fixedly connected to the inner wall of the groove (208a), and a slider (208c) slidably connected to the surface of the guide rod (208b).

7. A convertible pier deck girder structure according to claim 6, wherein: The locking assembly (208) further comprises a guide post (208d) fixedly connected to the side wall of the sliding block (208c), a reset spring (208e) fixedly connected to the end of the guide post (208d), and a replacement rib plate (208f) movably connected to the inner wall of the sliding groove (208a).

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