Combined prefabricated bent cap structure with convex columns

Abstract

The combined type prefabricated cover beam structure with the protruding column comprises a prefabricated cover beam, the protruding column and a prefabricated pier, the prefabricated cover beam extends out of the position, located on the prefabricated pier, of the prefabricated pier by a certain distance to be connected with the protruding column, the prefabricated cover beam and the installed protruding column are used for being connected with the prefabricated pier, and the protruding column comprises protruding column steel bars and protruding column stirrups. A plurality of convex column steel bars are arranged in the convex column, convex column stirrups are arranged on the periphery of the convex column steel bars on the convex column, and the convex column steel bars and the convex column stirrups on the convex column are used for being connected with the prefabricated cover beam in a bundling mode. The grouting sleeve between the prefabricated bent cap and the convex column after installation is connected with the prefabricated bridge pier main reinforcement on the prefabricated bridge pier in a penetrating mode, so that the installation and positioning of the convex column and the prefabricated bridge pier after installation are more accurate and convenient, and the construction difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge structures, and specifically to a combined prefabricated cap beam structure with convex columns. Background Art

[0002] Assembly is the main trend of the development of civil engineering in my country, and it is also the direction of the vigorous development of bridge engineering. Compared with the traditional cast-in-place bridge construction process, the assembly construction of bridges has the following advantages: no need for large-scale steel bar connection and formwork casting on site, which can speed up the construction progress and shorten the construction period; the large-scale production of components in the factory can better control various influencing factors in the component production process compared with on-site casting, and ensure the quality of the engineering structure; prefabricated components in the factory can reduce the site required for engineering construction, centrally handle various construction waste, etc., which is conducive to protecting the environment.

[0003] At present, prefabricated cap beams have the advantages of fast construction, no large-scale cast-in-place operations on site, factory production, more controllable and stable construction quality, intensive production that meets the requirements of energy conservation and emission reduction, and a construction method that is more in line with the direction of national industrial development. They are widely used in highway and municipal bridges. In the traditional prefabricated cap beam, an embedded groove of about 4 cm thick needs to be reserved at the location where the prefabricated piers are placed, which makes the construction more complicated and difficult; the main reinforcement at the lower edge of the cap beam needs to be moved upward as a whole (because of the need to move upward as a whole, the thickness of the concrete protection layer of the longitudinal force-bearing steel bars is greater than 50 mm, so a steel mesh needs to be added), which weakens the force-bearing efficiency of the main reinforcement; at the same time, due to the transverse slope, the bottom edge of the traditional prefabricated cap beam is inclined and embedded with a groove. When it is erected on the prefabricated pier, the accuracy is difficult to control and the hoisting and hole alignment are difficult, the visibility is weak, and the stability of the prefabricated cap beam is poor after erection; and the prefabricated piers are highly fragmented, which is not convenient for universal prefabrication; furthermore, the grouting pipe of the traditional prefabricated cap beam needs to be set on the cap beam, which is difficult to set up. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a prefabricated cap beam structure with a convex column assembly, which solves the problems that the traditional prefabricated cap beam has reduced accuracy in assembling the prefabricated cap beam and the prefabricated bridge pier, is difficult to align the holes during hoisting, has poor visibility, and has poor stability of the prefabricated cap beam after erection.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prefabricated cap beam structure with a combined protruding column, comprising a prefabricated cap beam, a protruding column and a prefabricated bridge pier, wherein the prefabricated cap beam is located at the position of the prefabricated bridge pier and extends out a certain distance to be connected to the protruding column, and the prefabricated cap beam and the installed protruding column are used to be connected to the prefabricated bridge pier.

[0006] Preferably, the protruding column includes protruding column steel bars and protruding column stirrups, a plurality of protruding column steel bars are arranged inside the protruding column, and protruding column stirrups are arranged around the protruding column steel bars on the protruding column, and the protruding column steel bars and protruding column stirrups on the protruding column are used for binding and connection with the prefabricated cap beam.

[0007] Preferably, the cross section where the protruding column on the prefabricated cap beam is connected to the prefabricated bridge pier is set to be horizontal, and the size of the protruding column on the prefabricated cap beam is wider than the longitudinal and transverse dimensions of the prefabricated bridge pier.

[0008] Preferably, the prefabricated cap beam comprises a grouting sleeve, and a plurality of grouting sleeves are provided between the prefabricated cap beam and the boss, and the grouting sleeves extend to the bottom of the boss.

[0009] Preferably, the prefabricated pier includes prefabricated pier main reinforcement, and a plurality of prefabricated pier main reinforcements are arranged in the prefabricated pier. The prefabricated pier main reinforcements are used to be installed and connected with the grouting sleeves between the prefabricated cap beam and the boss.

[0010] Preferably, a gap is formed between the prefabricated bridge pier and the prefabricated cap beam and the boss that are installed and connected.

[0011] Preferably, the grouting sleeve is provided with a grouting sleeve grouting pipe and a grouting sleeve grouting pipe, and the grouting sleeve grouting pipe is arranged at the lower part of the convex column.

[0012] Preferably, a convex column and the prefabricated bridge pier are further provided at the periphery of the gap between the convex column and the prefabricated bridge pier for leveling.

[0013] Compared with the existing technology, the utility model has the following beneficial effects: the utility model makes the installation and positioning of the installed convex column and the prefabricated pier more accurate and convenient by interlacing the grouting sleeve between the installed prefabricated cap beam and the convex column with the main reinforcement of the prefabricated pier on the prefabricated pier, thereby reducing the construction difficulty. Finally, grouting is carried out from bottom to top with the grouting sleeve grouting pipe as the inlet and the grouting sleeve grouting pipe as the outlet, thereby completing the connection between the combined prefabricated cap beam structure with the convex column and the prefabricated pier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the connection structure of the practical prefabricated cap beam, convex column and prefabricated bridge pier.

[0015] Figure 2 This is a schematic diagram of the side structure of the practical prefabricated cap beam, convex column and prefabricated bridge pier.

[0016] Figure 3 This is a schematic diagram of the explosive connection structure of the practical prefabricated cap beam, convex column and prefabricated bridge pier.

[0017] Figure 4 This is a schematic diagram of the explosive connection structure of the prefabricated cap beam and convex column of this utility model.

[0018] Figure 5This is a schematic diagram of the top view connection structure of the prefabricated cap beam and the convex column of this utility model.

[0019] Markings in the figure: 1. Prefabricated cap beam, 2. Protruding column, 3. Prefabricated bridge pier, 4. Gap, 5. Leveling of protruding column and prefabricated bridge pier, 6. Grouting sleeve, 7. Main reinforcement of prefabricated bridge pier, 8. Grouting sleeve grouting pipe, 9. Grouting sleeve grouting pipe, 10. Protruding column steel bar, 11. Protruding column stirrups. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a prefabricated cap beam structure with a combined protruding column, comprising a prefabricated cap beam 1, a protruding column 2 and a prefabricated bridge pier 3, wherein the prefabricated cap beam 1 is located at the position of the prefabricated bridge pier 3 and extends out a certain distance to be connected to the protruding column 2, and the prefabricated cap beam 1 and the installed protruding column 2 are used to be connected to the prefabricated bridge pier 3.

[0021] Furthermore, the convex column 2 includes a convex column steel bar 10 and a convex column stirrup 11, a plurality of convex column steel bars 10 are arranged inside the convex column 2, and a convex column stirrup 11 is arranged around the convex column steel bar 10 on the convex column 2, and the convex column steel bar 10 and the convex column stirrup 11 on the convex column 2 are used for binding and connecting with the prefabricated cap beam 1; the convex column steel bar 10 and the convex column stirrup 11 are arranged on the convex column 2 to enhance the connectivity and crack resistance between the convex column 2 and the prefabricated cap beam 1; the prefabricated cap beam 1 is extended by a certain length at the position of the prefabricated bridge pier 3, and the convex column 2 is integrally installed and connected with the prefabricated cap beam 1; it is different from the traditional prefabricated cap beam 1, which requires a four-centimeter-thick embedded groove to be reserved at the position where the prefabricated bridge pier 3 is placed, thereby reducing the construction difficulty; at the same time, compared with the traditional prefabricated cap beam 1, the positioning is more accurate and convenient when it is erected on the prefabricated bridge pier 3, and the visibility and operability are stronger;

[0022] The prefabricated cap beam 1 does not need to reserve an embedded groove of about four centimeters thick at the position where the prefabricated pier 3 is placed. Therefore, the main reinforcement 7 of the prefabricated pier at the lower edge of the prefabricated cap beam 1 does not need to be moved upward as a whole. At the same time, there is no need to add a steel mesh because the thickness of the concrete protective layer of the longitudinal force-bearing steel bars is greater than 50 mm. The force-bearing efficiency of the main reinforcement 7 of the prefabricated pier at the lower edge is fully utilized.

[0023] Furthermore, the section where the protruding column 2 on the prefabricated cap beam 1 is connected to the prefabricated pier 3 is set to be horizontal, and the size of the protruding column 2 on the prefabricated cap beam 1 is two centimeters wider than the longitudinal and transverse dimensions of the prefabricated pier 3. Since the sections of the protruding column 2 and the prefabricated pier 3 are set to be horizontal, the stability of the protruding column 2 and the prefabricated pier 3 during installation is better, and the situation where the bottom edge of the traditional prefabricated cap beam 1 is tilted due to the transverse slope and unstable during hoisting will not occur. At the same time, since the size of the protruding column 2 is two centimeters wider than the longitudinal and transverse dimensions of the prefabricated pier 3, the error between the planes of the protruding column 2 and the prefabricated pier 3 used to align the planes during hoisting can be rounded off by adjusting the height of the protruding column 2, so that the prefabricated piers 3 with scattered heights can be prefabricated for universal use.

[0024] Furthermore, the prefabricated cap beam 1 includes a grouting sleeve 6 , and a plurality of grouting sleeves 6 are provided between the prefabricated cap beam 1 and the boss 2 , and the grouting sleeves 6 extend to the bottom of the boss 2 .

[0025] Furthermore, the prefabricated pier 3 includes prefabricated pier main reinforcement 7. A plurality of prefabricated pier main reinforcement 7 is arranged inside the prefabricated pier 3. The prefabricated pier main reinforcement 7 is used to be installed and connected with the grouting sleeve 6 between the prefabricated cap beam 1 and the boss 2 through insertion.

[0026] Furthermore, the prefabricated pier 3 is connected to the prefabricated cap beam 1 and the boss 2 to form a gap 4; the installed boss 2 and the prefabricated cap beam 1 are hoisted and placed on the prefabricated pier 3, and the prefabricated pier 3 is connected to the prefabricated cap beam 1 and the gap 4 of the boss 2 with a two-centimeter thick high-strength non-shrinkage mortar.

[0027] Furthermore, the grouting sleeve 6 is provided with a grouting sleeve outlet pipe 8 and a grouting sleeve grouting pipe 9, and the grouting sleeve grouting pipe 9 is arranged at eleven centimeters below the convex column 2; grouting is performed from bottom to top with the grouting sleeve grouting pipe 9 as the inlet and the grouting sleeve outlet pipe 8 as the outlet, so as to complete the connection between the combined prefabricated cap beam 1 structure with the convex column 2 and the prefabricated pier 3. Moreover, since the grouting sleeve grouting pipe 9 is arranged at the lower part of the convex column 2, the construction difficulty is reduced compared with the grouting pipe of the traditional prefabricated cap beam 1 being arranged on the cap beam.

[0028] Furthermore, a boss and prefabricated pier leveling 5 is also provided on the periphery of the gap 4 between the boss 2 and the prefabricated pier 3; after the high-strength non-shrinkage mortar and the grouting material in the grouting sleeve 6 are solidified, the high-strength non-shrinkage mortar is finally used to perform the boss and prefabricated pier leveling 5 at a slope of 1:2.5, which is used for transition connection of the cross sections of the boss 2 and the prefabricated pier 3.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated cap beam structure with a convex column, comprising a prefabricated cap beam (1), a convex column (2) and a prefabricated bridge pier (3), characterized in that: The prefabricated cap beam (1) is located at the position of the prefabricated bridge pier (3) and extends out a distance to be connected to the protruding column (2). The prefabricated cap beam (1) and the installed protruding column (2) are used to be connected to the prefabricated bridge pier (3).

2. The prefabricated cap beam structure with convex columns according to claim 1, characterized in that: The protruding column (2) comprises a protruding column steel bar (10) and a protruding column stirrup (11); a plurality of protruding column steel bars (10) are arranged inside the protruding column (2); protruding column stirrups (11) are arranged around the protruding column steel bars (10) on the protruding column (2); the protruding column steel bars (10) and the protruding column stirrups (11) on the protruding column (2) are used for binding and connection with the prefabricated cap beam (1).

3. The prefabricated cap beam structure with convex columns according to claim 2 is characterized in that: The section where the protruding column (2) on the prefabricated cap beam (1) is connected to the prefabricated bridge pier (3) is set to be horizontal, and the size of the protruding column (2) on the prefabricated cap beam (1) is wider than the longitudinal and transverse dimensions of the prefabricated bridge pier (3).

4. The prefabricated cap beam structure with convex columns according to claim 3 is characterized in that: The prefabricated cap beam (1) comprises a grouting sleeve (6), a plurality of grouting sleeves (6) are arranged between the prefabricated cap beam (1) and the convex column (2), and the grouting sleeves (6) extend to the bottom of the convex column (2).

5. The prefabricated cap beam structure with convex columns according to claim 4 is characterized in that: The prefabricated bridge pier (3) comprises prefabricated bridge pier main reinforcement (7). A plurality of prefabricated bridge pier main reinforcements (7) are arranged in the prefabricated bridge pier (3). The prefabricated bridge pier main reinforcements (7) are used to be installed and connected with the grouting sleeves (6) between the prefabricated cap beam (1) and the protruding column (2) through insertion.

6. The prefabricated cap beam structure with convex columns according to claim 5, characterized in that: The prefabricated bridge pier (3) is connected to the prefabricated cap beam (1) and the protruding column (2) to form a gap (4).

7. The prefabricated cap beam structure with convex columns according to claim 6, characterized in that: The grouting sleeve (6) is provided with a grouting sleeve grouting pipe (8) and a grouting sleeve grouting pipe (9), and the grouting sleeve grouting pipe (9) is arranged at the lower part of the convex column (2).

8. The prefabricated cap beam structure with convex columns according to claim 7, characterized in that: The periphery of the gap (4) between the protruding column (2) and the prefabricated bridge pier (3) is also provided with a protruding column and prefabricated bridge pier leveling (5).

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