Connecting structure of prefabricated bent cap and prefabricated pier and construction method of connecting structure

Abstract

The invention discloses a connecting structure of a prefabricated bent cap and a prefabricated pier and a construction method of the connecting structure, and belongs to the technical field of prefabricated bridge assembly. According to the connecting structure of the prefabricated cover beam and the prefabricated pier and the construction method of the connecting structure, the prefabricated pier and the prefabricated cover beam assembled at the top end of the prefabricated pier are included, the upper end face of the prefabricated pier integrally extends upwards to be provided with a plurality of reserved steel bars, and the assembling position of the prefabricated cover beam is correspondingly provided with a plurality of reserved cavities allowing the reserved steel bars to vertically stretch into; the top end of the prefabricated pier is connected with a cement mortar leveling layer, the top end of the outer side of the prefabricated pier is provided with a side sealing mechanism, the bottom end of the outer side of the reserved steel bar is sleeved with a sealing gasket, grouting materials are poured into the reserved cavity, and the reserved cavity is of a big-end-up structure vertically penetrating through the prefabricated cover beam. The connection sealing performance between the prefabricated bent cap and the prefabricated pier can be effectively improved, the situations of grouting hollowing and uneven grouting are avoided, and the high practical value is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated bridge assembly, and in particular to a connection structure of a prefabricated cap beam and a prefabricated bridge pier and a construction method thereof. Background Art

[0002] With the development and promotion of prefabricated assembly technology of concrete structures, more and more on-site cast construction components in bridge projects have begun to adopt factory prefabrication and on-site assembly. The factory prefabrication of bridge structural parts can improve the construction quality and component manufacturing accuracy, thereby improving the durability of the structure. The on-site assembly of components can greatly improve the construction efficiency and significantly reduce the impact of on-site construction on the environment and traffic. For example, the Chinese patent with publication number CN116949915A discloses a connection structure of a prefabricated cap beam and a prefabricated bridge pier and a construction method thereof, including a prefabricated bridge pier and a prefabricated cap beam assembled on the top of the prefabricated pier column, the upper end surface of the prefabricated bridge pier is integrally extended upward and provided with a plurality of reserved steel bars, the assembly position of the prefabricated cap beam is correspondingly provided with a plurality of reserved cavities allowing each reserved steel bar to extend vertically, the reserved cavity is a large-upper-small-lower structure that runs through the prefabricated cap beam from top to bottom, and after the prefabricated cap beam and the prefabricated bridge pier are assembled, the reserved cavity is poured with grouting material from top to bottom;

[0003] The technical solution recorded in this proposal is to set a reserved cavity in the prefabricated cap beam, so that the construction of the connection node between the prefabricated pier and the prefabricated cap beam is more flexible and the construction precision requirement is lower. However, when this solution is in use, the prefabricated cap beam and the prefabricated pier are only sealed by an epoxy layer, which makes it easy for the grouting material to seep out during grouting, thus easily causing grouting hollowing and uneven grouting.

[0004] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a connection structure of a prefabricated cap beam and a prefabricated pier and a construction method thereof are provided, in order to achieve a purpose with greater practical value. Summary of the invention

[0005] The object of the present invention is to provide a connection structure of a prefabricated cap beam and a prefabricated bridge pier and a construction method thereof, so as to solve the problem that the existing connection structure of a prefabricated cap beam and a prefabricated bridge pier and a construction method thereof proposed in the above background technology is that when the prefabricated cap beam and the prefabricated bridge pier are in use, they are only sealed by an epoxy layer, which makes it easy for the grouting material to seep out during grouting, thereby easily causing grouting hollowing and uneven grouting.

[0006] In view of the above problems, the technical solution proposed by the present invention is:

[0007] A connection structure of a prefabricated cap beam and a prefabricated bridge pier, comprising a prefabricated bridge pier and a prefabricated cap beam assembled on the top of the prefabricated pier column, the upper end surface of the prefabricated bridge pier is integrally extended upwardly and provided with a plurality of reserved steel bars, the assembly position of the prefabricated cap beam is correspondingly provided with a plurality of reserved cavities allowing each reserved steel bar to vertically extend therein, the top of the prefabricated bridge pier is connected with a cement mortar leveling layer, the outer top end of the prefabricated bridge pier is installed with a side sealing mechanism, the outer bottom end of the reserved steel bar is sleeved with a sealing pad, and the interior of the reserved cavity is poured with grouting material.

[0008] Furthermore, the reserved cavity is a structure that is larger at the top and smaller at the bottom and passes through the prefabricated cap beam from top to bottom.

[0009] Furthermore, the bottom end of the sealing gasket contacts the top end of the cement mortar leveling layer, and the top end of the sealing gasket contacts the bottom end of the prefabricated cap beam.

[0010] Furthermore, the sealing gasket is made of rubber.

[0011] Furthermore, the side sealing mechanism includes an edge seal, the inner side of the edge seal is fixedly connected to the outer top end of the prefabricated pier, the outer side of the edge seal is slidably connected to a sealing sleeve, the outer bottom end of the edge seal is installed with a connecting frame, the top of the connecting frame is installed with a plurality of springs, and the top of the springs is fixedly connected to the bottom end of the sealing sleeve.

[0012] Furthermore, the top end of the sealing sleeve is in contact with the bottom end of the prefabricated cap beam.

[0013] Furthermore, the top of the edge sealing is flush with the top of the cement mortar leveling layer.

[0014] In another aspect, the present invention provides a construction method for a connection structure of a prefabricated cap beam and a prefabricated bridge pier, comprising the following steps:

[0015] S1, construction preparation: first transport the prefabricated cap beam to the vicinity of the prefabricated bridge piers, and check the quality of the prefabricated bridge piers and prefabricated cap beams to ensure that they are free of damage and cracks;

[0016] S2, prefabricated bridge pier processing: Check whether the position of the reserved steel bars is correct on the upper end surface of the prefabricated bridge pier. If there is any deviation, adjust it in time. Lay a cement mortar leveling layer on the top of the prefabricated bridge pier to ensure that its flatness meets the requirements;

[0017] S3, install the sealing gasket: put the rubber sealing gasket on the outer bottom end of the reserved steel bar, adjust the position of the sealing gasket so that its bottom end contacts the top end of the cement mortar leveling layer, and the top end contacts the bottom end of the prefabricated cap beam;

[0018] S4, install the side sealing mechanism: fix the side sealing mechanism on the outer top of the prefabricated pier column, ensure that its position is accurate and firm, and the top of the edge sealing should be flush with the top of the cement mortar leveling layer;

[0019] S5, installation of prefabricated cap beam: lift the prefabricated cap beam and slowly move it to the top of the prefabricated bridge pier, align it with the position of the reserved steel bars and the reserved cavity, slowly lower the prefabricated cap beam, make the reserved steel bars vertically extend into the reserved cavity, adjust the position of the prefabricated cap beam, ensure that it is installed accurately and horizontally, and the top end of the sealing sleeve should be in contact with the bottom end of the prefabricated cap beam;

[0020] S6, pouring grouting material: pouring grouting material from the top opening of the reserved cavity until it is full, and checking the pouring condition of the grouting material to ensure that there are no gaps and bubbles;

[0021] S7, Maintenance and inspection: Maintain the connection structure to ensure that the grouting material is fully solidified. After the maintenance is completed, inspect the connection structure, including appearance inspection and strength test, to ensure that the connection quality meets the requirements. Compared with the prior art, the beneficial effects of the present invention are as follows: the connection structure of the prefabricated cap beam and the prefabricated bridge pier and the construction method thereof, through the cooperation of the reserved steel bars and the reserved cavity, provide a reliable anchoring method for the connection between the prefabricated cap beam and the prefabricated bridge pier, enhance the strength and stability of the connection, make the top of the prefabricated bridge pier flat through the cement mortar leveling layer, provide a good foundation for the installation of the prefabricated cap beam, ensure the installation accuracy, improve the sealing of the connection structure through the setting of the side sealing mechanism and the sealing gasket, prevent the leakage of the grouting material, ensure the quality of the grouting, and reserve the cavity to be a large upper and small lower structure that runs through the prefabricated cap beam from top to bottom, which is beneficial to the flow and filling of the grouting material, ensure that there is no gap in the reserved cavity, improve the density and firmness of the connection, and through the top of the sealing gasket and the prefabricated The bottom ends of the cap beams are in contact with each other, ensuring that the grouting material is fully cured in the reserved cavity, thereby improving the durability of the connection; the sealing gasket is made of rubber material so that it has good elasticity and sealing performance, and can adapt to slight deformations between the prefabricated cap beam and the prefabricated bridge pier to ensure the sealing effect; through the provision of the sealing sleeve, the connecting frame and the spring, the sides of the connecting parts can be sealed during the installation of the prefabricated cap beam to prevent the grouting material from leaking from the sides; the top end of the sealing sleeve is in contact with the bottom end of the prefabricated cap beam, thereby further enhancing the side sealing performance of the connection structure, preventing the leakage of the grouting material, and improving the quality of the connection; the present invention can effectively improve the connection sealing performance between the prefabricated cap beam and the prefabricated bridge pier, avoid the occurrence of grouting hollowing and uneven grouting, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the three-dimensional structural schematic diagrams disclosed in the embodiment of the present invention;

[0023] Figure 2This is one of the schematic diagrams of the disassembled three-dimensional structure disclosed in the embodiment of the present invention;

[0024] Figure 3 This is the second schematic diagram of the disassembled three-dimensional structure disclosed in the embodiment of the present invention;

[0025] Figure 4 This is the third schematic diagram of the disassembled three-dimensional structure disclosed in the embodiment of the present invention;

[0026] Figure 5 This is the fourth schematic diagram of the disassembled three-dimensional structure disclosed in the embodiment of the present invention;

[0027] Figure 6 This is a block diagram of the method disclosed in an embodiment of the present invention.

[0028] In the figure: 100, prefabricated bridge pier; 10001, reserved steel bars; 101, prefabricated cap beam; 10101, reserved cavity; 102, cement mortar leveling layer; 103, sealing gasket; 104, side sealing mechanism; 10401, edge sealing; 10402, sealing sleeve; 10403, connecting frame; 10404, spring; 105, grouting material. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 5The present invention provides a technical solution: a connection structure of a prefabricated cap beam and a prefabricated bridge pier, comprising a prefabricated bridge pier 100 and a prefabricated cap beam 101 assembled on the top of the prefabricated pier column 100, the upper end surface of the prefabricated bridge pier 100 is integrally extended upwardly and provided with a plurality of reserved steel bars 10001, the assembly position of the prefabricated cap beam 101 is correspondingly provided with a plurality of reserved cavities 10101 allowing each reserved steel bar 10001 to vertically extend therein, the top of the prefabricated bridge pier 100 is connected with a cement mortar leveling layer 102, the outer top of the prefabricated bridge pier 100 is installed with a side sealing mechanism 104, and the outer bottom of the reserved steel bar 10001 is provided with a plurality of reserved cavities 10101 corresponding to the assembly position of the prefabricated cap beam 101. The end sleeve is provided with a sealing gasket 103, and the interior of the reserved cavity 10101 is poured with grouting material 105. Through the cooperation of the reserved steel bar 10001 and the reserved cavity 10101, a reliable anchoring method is provided for the connection between the prefabricated cap beam 101 and the prefabricated bridge pier 100, and the strength and stability of the connection are enhanced. The top of the prefabricated bridge pier 100 is made flat through the cement mortar leveling layer 102, which provides a good foundation for the installation of the prefabricated cap beam 101 and ensures the installation accuracy. Through the setting of the side sealing mechanism 104 and the sealing gasket 103, the sealing property of the connection structure is improved, the leakage of the grouting material is prevented, and the grouting quality is guaranteed.

[0031] In one embodiment of the present invention, the reserved cavity 10101 is a larger-than-lower structure that passes through the prefabricated cap beam 101 from top to bottom. The reserved cavity 10101 is a larger-than-lower structure that passes through the prefabricated cap beam 101 from top to bottom, which is beneficial to the flow and filling of the grouting material, ensures that there is no gap in the reserved cavity, and improves the density and firmness of the connection.

[0032] In one embodiment of the present invention, further, the bottom end of the sealing pad 103 contacts the top end of the cement mortar leveling layer 102, and the top end of the sealing pad 103 contacts the bottom end of the prefabricated cap beam 101. By contacting the top end of the sealing pad 103 with the bottom end of the prefabricated cap beam 101, it is ensured that the grouting material is fully cured in the reserved cavity 10101, thereby improving the durability of the connection.

[0033] In one embodiment of the present invention, further, the sealing gasket 103 is made of rubber material. By making the sealing gasket 103 into rubber material, it has good elasticity and sealing performance, can adapt to slight deformations between the prefabricated cap beam and the prefabricated bridge pier, and ensure the sealing effect.

[0034] An embodiment of the present invention further comprises a side sealing mechanism 104 which comprises an edge sealing 10401, the inner side of the edge sealing 10401 is fixedly connected to the outer top end of the prefabricated pier 100, the outer side of the edge sealing 10401 is slidably connected to a sealing sleeve 10402, a connecting frame 10403 is installed at the outer bottom end of the edge sealing 10401, a plurality of springs 10404 are installed at the top end of the connecting frame 10403, the top end of the spring 10404 is fixedly connected to the bottom end of the sealing sleeve 10402, and by arranging the sealing sleeve 10402, the connecting frame 10403 and the spring 1040, the side of the connection part can be sealed during the installation of the prefabricated cap beam 101 to prevent the grouting material from leaking from the side.

[0035] In one embodiment of the present invention, further, the top end of the sealing sleeve 10402 is in contact with the bottom end of the prefabricated cap beam 101. The top end of the sealing sleeve 10402 is in contact with the bottom end of the prefabricated cap beam 101, thereby further enhancing the side sealing of the connection structure, preventing leakage of grouting material, and improving the quality of the connection.

[0036] According to an embodiment of the present invention, further, the top of the edge sealing 10401 is flush with the top of the cement mortar leveling layer 102.

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 6 The present invention provides a technical solution: a construction method of a connection structure of a prefabricated cap beam and a prefabricated bridge pier, comprising the following steps:

[0039] S1, construction preparation: first, transport the prefabricated cap beam 101 to the vicinity of the prefabricated bridge pier 100, and check the quality of the prefabricated bridge pier 100 and the prefabricated cap beam 101 to ensure that they are free of damage and cracks;

[0040] S2, prefabricated bridge pier processing: check whether the position of the reserved steel bars 10001 is correct on the upper end surface of the prefabricated bridge pier 100, and adjust it in time if there is any deviation, and lay a cement mortar leveling layer 102 on the top of the prefabricated bridge pier 100 to ensure that its flatness meets the requirements;

[0041] S3, install the sealing gasket: put the rubber sealing gasket 103 on the outer bottom end of the reserved steel bar 10001, adjust the position of the sealing gasket 103 so that its bottom end contacts the top end of the cement mortar leveling layer 102, and the top end contacts the bottom end of the prefabricated cap beam 101;

[0042] S4, install the side sealing mechanism: fix the side sealing mechanism 104 on the outer top of the prefabricated pier 100, ensure that its position is accurate and firm, and the top of the edge sealing 10401 should be flush with the top of the cement mortar leveling layer 102;

[0043] S5, installation of prefabricated cap beam: lift the prefabricated cap beam 101, slowly move it to the top of the prefabricated bridge pier 100, align the positions of the reserved steel bars 10001 and the reserved cavity 10101, slowly lower the prefabricated cap beam 101, make the reserved steel bars 10001 vertically extend into the reserved cavity 10101, adjust the position of the prefabricated cap beam 101, ensure that it is installed accurately and horizontally, and the top end of the sealing sleeve 10402 should be in contact with the bottom end of the prefabricated cap beam 101;

[0044] S6, pouring grouting material: pouring grouting material 105 from the top opening of the reserved cavity 10101 until it is full, and checking the pouring condition of the grouting material 105 to ensure that there are no gaps and bubbles;

[0045] S7, maintenance and inspection: maintain the connection structure to ensure that the grouting material 105 is fully solidified. After the maintenance is completed, inspect the connection structure, including appearance inspection and strength test, to ensure that the connection quality meets the requirements. Specifically, the working principle of the connection structure of the prefabricated cap beam and the prefabricated bridge pier and the construction method thereof is as follows: when in use, the cooperation of the reserved steel bars 10001 and the reserved cavity 10101 provides a reliable anchoring method for the connection between the prefabricated cap beam 101 and the prefabricated bridge pier 100, thereby enhancing the strength and stability of the connection; the top of the prefabricated bridge pier 100 is made flat through the cement mortar leveling layer 102, thereby providing a good foundation for the installation of the prefabricated cap beam 101 and ensuring the installation accuracy; the side sealing mechanism 104 and the sealing gasket 103 are provided to improve the sealing performance of the connection structure, prevent leakage of the grouting material, and ensure the quality of the grouting; the reserved cavity 10101 is a large-upper-small-lower structure that runs through the prefabricated cap beam 101 from top to bottom, thereby facilitating the flow and filling of the grouting material, thereby ensuring that there is no gap in the reserved cavity, thereby improving the density and firmness of the connection; The bottom ends of the prefabricated cap beam 101 are in contact with each other, ensuring that the grouting material is fully cured in the reserved cavity 10101, thereby improving the durability of the connection; the sealing pad 103 is made of rubber material so that it has good elasticity and sealing performance, and can adapt to slight deformations between the prefabricated cap beam and the prefabricated bridge pier to ensure the sealing effect; through the arrangement of the sealing sleeve 10402, the connecting frame 10403 and the spring 1040, the sides of the connection parts can be sealed during the installation of the prefabricated cap beam 101 to prevent the grouting material from leaking from the sides; the top end of the sealing sleeve 10402 is in contact with the bottom end of the prefabricated cap beam 101, thereby further enhancing the side sealing performance of the connection structure, preventing the grouting material from leaking and improving the quality of the connection; the present invention can effectively improve the connection sealing performance between the prefabricated cap beam and the prefabricated bridge pier, avoid the occurrence of grouting hollowing and uneven grouting, and has high practical value.

Claims

1. A connection structure of a prefabricated cap beam and a prefabricated bridge pier, characterized in that: The invention comprises a prefabricated bridge pier (100) and a prefabricated cap beam (101) mounted on the top of the prefabricated pier column (100); the upper end surface of the prefabricated bridge pier (100) is integrally provided with a plurality of reserved steel bars (10001) extending upward; the assembly position of the prefabricated cap beam (101) is correspondingly provided with a plurality of reserved cavities (10101) allowing each reserved steel bar (10001) to vertically extend therein; the top of the prefabricated bridge pier (100) is connected with a cement mortar leveling layer (102); the outer top end of the prefabricated bridge pier (100) is provided with a side sealing mechanism (104); the outer bottom end of the reserved steel bar (10001) is provided with a sealing pad (103); and the interior of the reserved cavity (10101) is poured with grouting material (105).

2. The connection structure of the prefabricated cap beam and the prefabricated bridge pier according to claim 1, characterized in that: The reserved cavity (10101) is a structure that is larger at the top and smaller at the bottom and passes through the prefabricated cap beam (101) from top to bottom.

3. The connection structure of the prefabricated cap beam and the prefabricated bridge pier according to claim 2, characterized in that: The bottom end of the sealing pad (103) contacts the top end of the cement mortar leveling layer (102), and the top end of the sealing pad (103) contacts the bottom end of the prefabricated cap beam (101).

4. The connection structure of the prefabricated cap beam and the prefabricated bridge pier according to claim 3 is characterized in that: The sealing pad (103) is made of rubber.

5. The connection structure of the prefabricated cap beam and the prefabricated bridge pier according to claim 4, characterized in that: The side sealing mechanism (104) includes an edge seal (10401), the inner side of the edge seal (10401) is fixedly connected to the outer top end of the prefabricated pier (100), the outer side of the edge seal (10401) is slidably connected to a sealing sleeve (10402), a connecting frame (10403) is installed at the outer bottom end of the edge seal (10401), a plurality of springs (10404) are installed at the top end of the connecting frame (10403), and the top end of the spring (10404) is fixedly connected to the bottom end of the sealing sleeve (10402).

6. The connection structure of the prefabricated cap beam and the prefabricated bridge pier according to claim 5, characterized in that: The top end of the sealing sleeve (10402) is in contact with the bottom end of the prefabricated cap beam (101).

7. The connection structure of the prefabricated cap beam and the prefabricated bridge pier according to claim 6, characterized in that: The top of the edge sealing (10401) is flush with the top of the cement mortar leveling layer (102).

8. A construction method for a connection structure of a prefabricated cap beam and a prefabricated bridge pier, characterized in that: The connection structure of a prefabricated cap beam and a prefabricated bridge pier as described in claim 7, The following steps are involved: S1, construction preparation: first, transport the prefabricated cap beam (101) to the vicinity of the prefabricated bridge pier (100), and check the quality of the prefabricated bridge pier (100) and the prefabricated cap beam (101) to ensure that they are free of damage and cracks; S2, prefabricated bridge pier processing: check whether the position of the reserved steel bars (10001) is correct on the upper end surface of the prefabricated bridge pier (100), and adjust it in time if there is any deviation, and lay a cement mortar leveling layer (102) on the top of the prefabricated bridge pier (100) to ensure that its flatness meets the requirements; S3, installing the sealing gasket: putting a rubber sealing gasket (103) on the outer bottom end of the reserved steel bar (10001), adjusting the position of the sealing gasket (103) so that its bottom end contacts the top end of the cement mortar leveling layer (102), and its top end contacts the bottom end of the prefabricated cap beam (101); S4, installing the side sealing mechanism: the side sealing mechanism (104) is fixedly installed on the outer top of the prefabricated pier (100), ensuring that its position is accurate and firm, and the top of the edge sealing (10401) should be flush with the top of the cement mortar leveling layer (102); S5, installation of prefabricated cap beam: lift the prefabricated cap beam (101), slowly move it to the top of the prefabricated bridge pier (100), align the positions of the reserved steel bars (10001) and the reserved cavity (10101), slowly lower the prefabricated cap beam (101), make the reserved steel bars (10001) vertically extend into the reserved cavity (10101), adjust the position of the prefabricated cap beam (101), ensure that it is installed accurately and horizontally, and the top end of the sealing sleeve (10402) should be in contact with the bottom end of the prefabricated cap beam (101); S6, pouring grouting material: pouring grouting material (105) from the top opening of the reserved cavity (10101) until it is full, and checking the pouring condition of the grouting material (105) to ensure that there are no gaps and bubbles; S7, maintenance and inspection: the connection structure is maintained to ensure that the grouting material (105) is fully solidified. After the maintenance is completed, the connection structure is inspected, including appearance inspection and strength inspection, to ensure that the connection quality meets the requirements.

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