Cover beam adjusting block capable of adjusting longitudinal curvature of viaduct and viaduct

Abstract

The capping beam adjusting block capable of adjusting the longitudinal curvature of the viaduct comprises a square block, the upper end face of the square block is an inclined face, the lower end face of the square block is connected with a pier, and the inclined face of the upper end face is connected with a capping beam. The square blocks are prefabricated in a prefabrication factory; and the connecting rod is connected with the pier and the cover beam through bolts. The square blocks are cast in place and are connected with the pier and the cover beam through steel bars. A viaduct comprises a bridge deck precast block, a plurality of cover beam adjusting blocks are connected to the lower end face of the bridge deck precast block at equal intervals, and the lower end of each cover beam adjusting block is connected with a bridge pier base; the lower end of the pier base is connected with a base fixing base, the lower end of the base fixing base is connected with a stand column, and the lower end of the stand column is connected with a stabilizing base. The capping beam adjusting block capable of adjusting the longitudinal curvature of the viaduct and the viaduct aim to overcome the defects in the prior art, and the problem of connection of a bent section of the viaduct or the viaduct and a capping beam oblique crossing section is solved.

Description

Technical Field

[0001] The utility model relates to a pier adjusting block for adjusting the longitudinal curvature of a viaduct and a viaduct. Background Art

[0002] A viaduct, that is, an overpass, is a kind of bridge. Especially a bridge that is placed on a series of narrow reinforced concrete or masonry arches, has high supports such as towers or columns, and spans valleys, rivers, roads or other low obstacles. After the development of the city, traffic congestion and dense buildings occur, and it is difficult to widen the streets. Using this kind of bridge can disperse the traffic density and improve the transportation efficiency. In addition, for highways or railways between cities, in order to avoid plane intersections with other lines, save land, and reduce subgrade settlement (in some areas), embankments can also be not used, but this kind of bridge can be adopted.

[0003] During the construction of a viaduct, there may be a situation where the upper structure box girder of the viaduct has a certain curvature or the axis of the box girder is skew to the pier structure. In this case, a special structure is needed to adjust and adapt to this curvature so that the bridge can be correctly connected to the pier. Therefore, in view of the above problems, a pier adjusting block for adjusting the longitudinal curvature of a viaduct and a viaduct are proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a pier adjusting block for adjusting the longitudinal curvature of a viaduct and a viaduct to overcome the existing defects, and solve the connection problem of the curved section of the viaduct or the skew section between the viaduct and the pier.

[0005] The technical solution to achieve the above purpose is: a pier adjusting block for adjusting the longitudinal curvature of a viaduct, including a square block. The upper end surface of the square block is an inclined surface, the lower end surface of the square block is connected to the pier, and the inclined surface of the upper end surface is connected to the pier.

[0006] Preferably, the square block is prefabricated in a prefabrication factory and is connected to the pier and the pier through bolts.

[0007] Preferably, the square block is cast in place and is connected to the pier and the pier through steel bars.

[0008] A viaduct includes precast blocks of the bridge deck. The lower end surfaces of the precast blocks of the bridge deck are connected to multiple pier adjusting blocks at equal distances. The lower end of each pier adjusting block is connected to the pier base. The lower end of the pier base is connected to the base fixing seat, and the lower end of the base fixing seat is connected to the column. The lower end of the column is connected to the stable seat.

[0009] The upper end of the pier base is connected to the pier; the lower end of the precast block of the bridge deck is connected to the pier.

[0010] Multiple stabilizing steel bars are inserted into the column.

[0011] The beneficial effects of the present utility model are as follows: This adjusting block has the longitudinal curvature adjusting effect for matching the curved section of the viaduct or the skewed section of the viaduct axis and the capping beam, so that the bridge box girder can be directly connected to the capping beam to the pier. Install two capping beam adjusting blocks (square blocks) at the intersection of the bridge capping beam and the pier to adjust the bending degree of the bridge, so as to maintain the overall continuity and stability of the bridge. The square block is an irregular quadrilateral column, and its planar dimension varies according to the bending degree of the bridge and the designed width of the capping beam. The setting of the adjusting block (square block) well solves the connection problem of the curved section of the viaduct or the skewed section of the viaduct and the capping beam, without the need to solve the above problems by adjusting the box girder size or post-cast strip one by one, reducing the prefabrication time of the box girder and the pouring time of the post-cast strip, and simplifying the construction process.

[0012] The capping beam adjusting block of the present utility model can effectively adapt to different road alignments and height differences. By installing two large-slope capping beam adjusting blocks (square blocks) at the connection between the capping beam and the pier, box girders with the same curvature and the same size can be used in other positions. High-level bridges usually require smooth transition curve sections. The capping beam adjusting block of the present utility model can ensure the smooth connection of the bridge and ensure that the bridge deck paving material can smoothly cover the entire bridge deck. It can reduce the stress concentration at the curvature change of the bridge deck, thereby improving the overall structural stability and service life of the bridge. It can make the flatness of the bridge deck reach the best state, ensuring the smoothness, comfort, safety and stability of vehicle driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the capping beam adjusting block for adjusting the longitudinal curvature of the adjustable viaduct of the present utility model;

[0014] Figure 2 is a schematic diagram of the viaduct of the present utility model.

[0015] In the figure: 1. Square block; 2. Pier; 3. Capping beam; 4. Prefabricated bridge deck block; 5. Pier base; 6. Column; 7. Base fixing seat; 8. Stabilizing seat; 9. Stabilizing steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0017] The present utility model will be further described below in conjunction with the accompanying drawings.

[0018] As Figure 1 shown, a capping beam adjusting block for adjusting the longitudinal curvature of a viaduct includes a square block 1. The upper end surface of the square block 1 is an inclined surface. The lower end surface of the square block 1 is connected to a pier 2, and the inclined surface of the upper end surface is connected to a capping beam 3.

[0019] As Figure 2 shown, a viaduct includes precast deck blocks 4. The lower end surfaces of the precast deck blocks 4 are connected to multiple capping beam adjusting blocks at equal intervals. The lower end of each capping beam adjusting block is connected to a pier base 5; the lower end of the pier base 5 is connected to a base fixing seat 7, the lower end of the base fixing seat 7 is connected to a column 6, and the lower end of the column 6 is connected to a stabilizing seat 8. The upper end of the pier base 5 is connected to the pier 2; the lower end of the precast deck block 4 is connected to the capping beam 3. Multiple stabilizing steel bars 9 are inserted into the column 6.

[0020] Specifically, the main function of the adjusting block (square block 1) is to adjust the size and slope of the capping beam 3 so that it can be directly connected to the pier 2, ensuring that the bridge load can be evenly transmitted to the pier through the adjusting block, avoiding structural damage caused by uneven stress, and thus maintaining the overall continuity and stability of the bridge. The shape and size of the adjusting block (square block 1) are customized according to the viaduct box girder size, linear curvature or skewed angle. A gradually changing cross-section is usually adopted, which can smoothly transition the curvature difference between the box girder and the capping beam. High-strength reinforced concrete materials are usually used to ensure sufficient load-bearing capacity and durability. Sometimes prestressed concrete is also used to improve the bending resistance. For bridges with large spans or complex curvatures, the adjusting block may be divided into multiple segments.

[0021] This adjusting block has the function of adjusting the longitudinal curvature to match the curved section of the viaduct or the skewed section where the viaduct axis intersects with the capping beam, so that the bridge box girder can be directly connected to the capping beam to the pier. Two capping beam adjusting blocks (square blocks 1) are installed at the intersection of the bridge capping beam 3 and the pier 2 to adjust the bending degree of the bridge, thereby maintaining the overall continuity and stability of the bridge. The square block 1 is an irregular quadrilateral column, and its planar dimensions vary according to the bending degree of the bridge and the designed width of the capping beam. The setting of the adjusting block (square block 1) well solves the connection problem of the curved section of the viaduct or the skewed section where the viaduct intersects with the capping beam, eliminating the need to solve the above problems by adjusting the box girder size or post-cast strip one by one, reducing the precasting time of the box girder and the pouring time of the post-cast strip, and simplifying the construction process.

[0022] Specifically, the square block 1 is precast in a prefabrication factory and is connected to the pier 2 and the capping beam 3 through bolts.

[0023] Specifically, the square block 1 is cast on-site and connected to the bridge pier 2 and the capping beam 3 through steel bars.

[0024] Specifically, this adjustment block (square block 1) can adjust a small radius of curvature or a large slope. Its connection to the capping beam 3 and the bridge pier 2 uses steel bar connection or bolt connection to ensure the integrity and safety of the structure. The capping beam adjustment block (square block 1) can be prefabricated in the factory and then transported to the construction site for installation; it can also be cast directly on-site. The specific choice depends on the construction conditions and design requirements. With reasonable design and use, it can significantly improve the structural performance and service life of the bridge. The capping beam adjustment block can be widely applied to various bridge projects, especially in urban viaducts and highway bridges. Its effective curvature compensation function provides a reliable guarantee for the long-term use of the bridge.

[0025] Specifically, the common method for viaduct construction to solve the curved section is to replace the curve with a straight line. By adjusting the size of each single box girder one by one, the curvature is shown, and finally, a post-cast strip is used for connection at the contact section between the box girder and the capping beam. This method has extremely high requirements for the prefabrication precision of the box girder, and it is very difficult to control the curvature accuracy. However, the present utility model adjusts the curvature of the viaduct or the problem of the skew intersection between the viaduct box girder and the capping beam by arranging two capping beam adjustment blocks (square block 1) on both sides of the bridge capping beam, without the need to control the size of each box girder one by one, greatly improving the accuracy of the curvature of the viaduct box girder.

[0026] Specifically, in the complex urban traffic network, elevated overpasses usually need to adapt to different road alignments and height differences. There are usually certain curvature changes in the viaduct or the axis of the viaduct is skew to the axis of the capping beam structure. The capping beam adjustment block of the present utility model can effectively adapt to these changes. By installing two large-slope capping beam adjustment blocks (square block 1) at the connection between the capping beam 3 and the bridge pier 2, box girders with the same curvature and size can be used in other positions. Elevated bridges usually require a smooth transition curve section. The capping beam adjustment block of the present utility model can ensure the smooth connection of the bridge and ensure that the bridge deck paving material can smoothly cover the entire bridge deck. It can reduce the stress concentration at the curvature change of the bridge deck, thereby improving the overall structural stability and service life of the bridge. It can make the flatness of the bridge deck reach the best state, ensuring the smoothness, comfort, safety, and stability of vehicle driving.

[0027] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A bent cap adjusting block for adjusting the longitudinal curvature of a viaduct, characterized in that, It includes a square block (1). The upper end surface of the square block (1) is an inclined surface. The lower end surface of the square block (1) is connected to the pier (2), and the inclined surface of the upper end surface is connected to the capping beam (3).

2. The bent cap adjusting block for adjusting the longitudinal curvature of the adjustable viaduct according to claim 1, wherein The square block (1) is precast in a prefabrication factory and is connected to the pier (2) and the capping beam (3) by bolts.

3. The bent cap adjusting block for adjusting the longitudinal curvature of the adjustable viaduct according to claim 1, characterized in that, The square block (1) is cast in place and is connected to the pier (2) and the capping beam (3) by steel bars.

4. A viaduct, characterized in that, It includes a bridge deck precast block (4). The lower end surface of the bridge deck precast block (4) is connected to multiple capping beam adjusting blocks at equal distances. The lower end of each capping beam adjusting block is connected to a pier base (5). The lower end of the pier base (5) is connected to a base fixing seat (7), the lower end of the base fixing seat (7) is connected to a column (6), and the lower end of the column (6) is connected to a stabilizing seat (8).

5. The viaduct according to claim 4, wherein The upper end of the pier base (5) is connected to the pier (2). The lower end of the bridge deck precast block (4) is connected to the capping beam (3).

6. The viaduct according to claim 4, characterized in that, Multiple stabilizing steel bars (9) are inserted into the column (6).

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