An assembly double-column bridge pier

Abstract

The utility model provides a kind of assembled double-column pier, including cap beam, column and pile foundation are sequentially arranged below cap beam, first tenon is symmetrically set in the left and right sides of the lower surface of cap beam, first mortise and second tenon are respectively set in the upper and lower surfaces of column, pile foundation reinforcing section is set on the upper end of pile foundation, second mortise is equipped at the top surface of pile foundation reinforcing section and opposite column, the periphery of first tenon is filled with self-compacting super high performance concrete from the bottom of first mortise to the top of first tenon, the periphery of second tenon is filled with self-compacting super high performance concrete from the bottom of second mortise to the top of second tenon, the utility model replaces longitudinal, transverse reinforcement in the prior art by self-compacting super high performance concrete, on the basis of ensuring the integrity and stability of assembled double-column bridge, it does not need to reserve and arrange reserved reinforcement at mortise and tenon connecting part in bridge assembling construction process, can greatly shorten project duration, improve the economic benefit of project.

Description

Technical Field

[0001] This utility model relates to a bridge pier, and more particularly to a double-column assembled bridge pier. Background Technology

[0002] Bridge piers are an important component of bridge structures, mainly used to support the bridge span structure and transfer the load to the foundation. Double-column bridge piers are widely used in highway bridges and consist of columns, pile foundations, pile foundation reinforcement sections, pile foundation tie beams, and cap beams.

[0003] Currently, in highway engineering, double-column bridge piers often use longitudinal and transverse steel bars to reinforce the anchor bolt connection during the assembly process. In particular, the longitudinal steel bars run through the pier from top to bottom. This means that whether the pier is prefabricated in the factory or cast on site, the longitudinal and transverse steel bar positions need to be reserved at the mortise and tenon connection, and additional steel bar binding is required at these reserved positions. This results in a long construction cycle, high labor costs, and low construction efficiency for the entire bridge pier. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a prefabricated double-column bridge pier. The columns are connected to the pile foundation reinforcement section and the cap beam by mortise and tenon joints, i.e., a matching tenon and mortise combination structure. Self-compacting ultra-high performance concrete is poured into the matching tenon and mortise joint connection structure. While ensuring the integrity and stability of the prefabricated double-column bridge, no additional longitudinal and transverse steel bars are required at the mortise and tenon joints when assembling the double-column bridge pier on site.

[0005] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0006] A prefabricated double-column bridge pier includes a cap beam, with columns and pile foundations arranged sequentially below the cap beam. First tenons are symmetrically arranged on the left and right sides of the lower surface of the cap beam. A first mortise is provided on the top surface of the column directly opposite the first tenon, and a second tenon is provided on the bottom surface. A pile foundation reinforcement section is provided at the upper end of the pile foundation, with a second mortise on the top surface of the reinforcement section directly opposite the column. Self-compacting ultra-high performance concrete is filled around the first tenon from the bottom of the first mortise to the top of the first tenon. Self-compacting ultra-high performance concrete is also filled around the second tenon from the bottom of the second mortise to the top of the second tenon.

[0007] Furthermore, it also includes tie beams, which are positioned between the two pile foundation reinforcement sections.

[0008] Furthermore, a main slot is provided on the inner side of the reinforced section of the pile foundation, directly opposite the tie beam, and the two ends of the tie beam are adapted to the size of the main slot.

[0009] Furthermore, the space between the outer perimeter of both ends of the tie beam and the main slot is filled with self-compacting ultra-high performance concrete.

[0010] Furthermore, the length of the first tenon protruding outward is greater than the depth of the first mortise, and the length of the second tenon protruding outward is greater than the depth of the second mortise.

[0011] Furthermore, the width of the first tenon is smaller than the width of the first mortise, and the width of the second tenon is smaller than the width of the second mortise.

[0012] Furthermore, a first slot is provided at the position directly opposite the top surface of the column and the cap beam.

[0013] Furthermore, a second slot is provided at the position directly opposite the top surface of the pile foundation reinforcement section and the column.

[0014] Furthermore, both the columns and the cap beams are prefabricated structures in the factory.

[0015] Furthermore, the pile foundation, the reinforced section of the pile foundation, and the tie beam are all cast-in-place structures.

[0016] Compared with the prior art, this utility model has at least the following advantages and beneficial effects:

[0017] 1. In this utility model, the cap beam, column and pile foundation reinforcement section are connected by a mortise and tenon structure, that is, a matching tenon and mortise combination structure. Self-compacting ultra-high performance concrete is poured into the matching tenon and mortise connection structure. While ensuring the integrity and stability of the assembled double-column bridge, it eliminates the need to reserve and arrange longitudinal and transverse steel bars at the mortise and tenon connection during the bridge assembly construction process, which can significantly shorten the project period.

[0018] 2. The present invention provides a prefabricated double-column pier structure, which allows for the unified prefabrication of components in the factory and their transport to the site for assembly, thus shortening the construction time. Furthermore, the assembly process between the components is simple and convenient, thereby improving the efficiency of pier construction.

[0019] 3. Self-compacting ultra-high performance concrete is used, which can automatically level and fill the formwork, reducing the difficulty of construction; and can automatically expel air bubbles, ensuring the compactness and uniformity of the concrete and reducing defects such as honeycomb and voids.

[0020] Advantages of the present invention in additional aspects will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0022] Figure 1 This is a schematic diagram of the assembly of the double-column pier structure in an embodiment of this utility model;

[0023] Figure 2 This is a front view of the disassembled cross-section of the assembled double-column pier structure in an embodiment of this utility model;

[0024] Figure 3 This is a front cross-sectional view of the structure when the double-column bridge pier is assembled in this embodiment of the present invention.

[0025] Figure 4 This is a side view of the assembled double-column pier structure in an embodiment of this utility model;

[0026] Among them, 1. Column; 11. First tenon; 12. First mortise; 13. First slot; 2. Pile foundation; 3. Pile foundation reinforcement section; 31. Second tenon; 32. Second mortise; 33. Second slot; 4. Tie beam; 41. Main slot; 5. Cap beam; 6. Self-compacting ultra-high performance concrete. Detailed Implementation

[0027] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention.

[0028] Where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0029] Example 1:

[0030] like Figure 1 and Figure 4As shown, this embodiment discloses an assembled double-column bridge pier. The double-column bridge includes a cap beam 5, with columns 1 and pile foundations 2 arranged sequentially below the cap beam 5. First tenons 11 are symmetrically arranged on the left and right sides of the lower surface of the cap beam 5. A first mortise 12 is provided on the top surface of the column 1 directly opposite the first tenon 11, and a second tenon 31 is provided on the bottom surface. A pile foundation reinforcement section 3 is provided at the upper end of the pile foundation. A second mortise 32 is provided on the top surface of the pile foundation reinforcement section 3 directly opposite the column 1. Self-compacting ultra-high performance concrete 6 is filled around the first tenon 11 from the bottom of the first mortise 12 to the top of the first tenon 11. Self-compacting ultra-high performance concrete 6 is filled around the second tenon 31 from the bottom of the second mortise 32 to the top of the second tenon 31.

[0031] Because the pile foundation 2 is equipped with a pile foundation reinforcement section 3 at the top, the area of ​​the connection surface between the column 1 and the pile foundation 2 is increased through the pile foundation reinforcement section 3, which further enhances the seismic resistance and stability of the pier connection between the column 1 and the pile foundation 2.

[0032] like Figure 2 and Figure 3 As shown, in this embodiment, the length of the outward protrusion of the first tenon 11 is greater than the depth of the first mortise 12, and the width of the first tenon 11 is less than the width of the first mortise 12. Specifically, due to the structural dimensional relationship between the first tenon and the first mortise, there is a certain gap between the top surface of the column and the cap beam. The outermost edge of this gap is the same as the side of the column. Therefore, a first slot 13 is provided at the position directly opposite the top surface of the column and the cap beam. In this embodiment, the first slot 13 is used to erect a steel template between the column 1 and the cap beam 5. Through this steel template, self-compacting ultra-high performance concrete is filled from the outer periphery of the first tenon, that is, from the bottom of the first mortise to the top of the first tenon, to achieve a consolidation effect.

[0033] The length of the outward protrusion of the second tenon 31 is greater than the depth of the second mortise 32, and the width of the second tenon is less than that of the second mortise 32. Specifically, due to the structural dimensional relationship between the second tenon and the second mortise 32, there is a certain gap between the top surface of the pile foundation reinforcement section and the column. The outermost edge of this gap is the same as the side of the pile foundation reinforcement section. Therefore, a second slot 33 is provided at the position directly opposite the column between the top surface of the pile foundation reinforcement section and the column. In this embodiment, the second slot 33 is used to erect a steel template between the column 1 and the pile foundation reinforcement section. Through this steel template, self-compacting ultra-high performance concrete is filled into the gap from the bottom of the second mortise to the top of the second tenon to achieve a consolidation effect.

[0034] Since the structural relationships of the tenon and mortise components are the same among the support column, cap beam and pile foundation, this embodiment will be described using the second tenon structure as an example.

[0035] Because the length of the second tenon protruding outward is greater than the depth of the second mortise, and the width of the second tenon is less than the width of the second mortise, there is a certain space around the second tenon, from the bottom of the first mortise to the top of the first tenon. Self-compacting ultra-high performance concrete is filled around the second tenon from the bottom of the second mortise to the top of the second tenon. The self-compacting ultra-high performance concrete is used to solidify the column and the pile foundation reinforcement section. The self-compacting ultra-high performance concrete in this embodiment is a prior art technology, which has extremely high durability and extremely high mechanical properties.

[0036] In addition, to further enhance the strength and stability of the prefabricated bridge, the bridge also includes a tie beam 4, which is set between two pile foundation reinforcement sections 3. A main slot 41 is set on the inner side of the pile foundation reinforcement section 3, directly opposite the tie beam. The two ends of the tie beam 4 are matched with the size of the main slot 41. After the two ends of the tie beam are inserted into the main slots, the on-site staff will fill the space between the outer periphery of the tie beam and the main slot with ultra-high performance concrete.

[0037] To further accelerate the on-site construction progress, the columns and cap beams in this embodiment are prefabricated structures in the factory, while the pile foundations and tie beams are cast-in-place structures. The prefabricated pier structure in this embodiment can prefabricate components in the factory and transport them to the site for assembly, which shortens the construction time. Moreover, the assembly process between the components is simple and convenient, which can improve the efficiency of pier construction.

[0038] The implementation principle of this utility model of prefabricated bridge pier is as follows:

[0039] At the construction site, the pile foundation 2 will be constructed first. After the pile foundation 2 has been poured with concrete and cured for a period of time to reach the design strength, the workers will then pour the reinforced section 3 of the pile foundation and the tie beam 4 on site. After the reinforced section 3 of the pile foundation and the tie beam 4 have been poured with concrete and cured for a period of time to reach the design strength, the workers will use a crane to lift the column 1 and insert the second tenon into the second mortise to achieve the initial connection between the column and the reinforced section 3 of the pile foundation.

[0040] After the column 1 is hoisted, a steel formwork is erected at the second slot 33 between the pile foundation reinforcement section 3 and the column 1. Self-compacting ultra-high performance concrete is poured into the second slot 33. The ultra-high performance self-compacting concrete is cured until the concrete strength reaches the design strength. Then, the cap beam 5 is hoisted. The column and cap beam 5 are initially connected by inserting the first tenon into the first mortise. After the cap beam 5 is hoisted and positioned, a steel formwork is erected at the first slot 13 between the column 1 and the cap beam 5. Self-compacting ultra-high performance concrete is poured into the first slot 13. The ultra-high performance self-compacting concrete is cured until the concrete strength reaches the design requirements, thus completing the construction of the bridge pier structure.

[0041] By using mortise and tenon joints and prefabrication to connect and assemble the columns and cap beams in the pier structure, construction efficiency can be improved and the construction period can be shortened. Self-compacting ultra-high performance concrete 6 is used to fill the second slot 33 between column 1 and pile foundation reinforcement section 3 and the first slot 13 between cap beam 5 and column 1. By using self-compacting ultra-high performance concrete to replace the longitudinal and transverse steel bars in the traditional process, the connection strength and bending and shear resistance at the nodes of the pier components can be enhanced, and construction efficiency can be greatly improved.

[0042] Based on the above content of this embodiment, the prefabricated bridge pier construction method of this utility model includes the following steps:

[0043] S1. Use a drilling rig to drill holes according to the design requirements, control the hole diameter and depth, and at the same time pour the pile foundation 2;

[0044] S2. In accordance with the design requirements of the project's structural dimensions, steel formwork is erected at the corresponding positions on the pile foundation, and the pile foundation reinforcement section 3 and tie beam 4 are poured on top of the pile foundation 2.

[0045] S3. Using cranes with corresponding counterweights, lift columns 1 above the left and right pile foundation reinforcement sections 3 respectively, and insert the second tenon 31 of column 1 into the second tenon groove 32 at the top of the pile foundation reinforcement section to complete the initial lifting of the column and the pile foundation reinforcement section.

[0046] S4. A steel formwork is erected at the position of the second slot 33 between the column 1 and the pile foundation reinforcement section 3. Self-compacting ultra-high performance concrete is filled in the gap from the bottom of the second tenon to the top of the second tenon, from the outer periphery of the second tenon to fill the column 1, the pile foundation reinforcement section 3, and the second slot 33 to form a solid connection.

[0047] S5. The cap beam 5 is lifted by a crane with corresponding counterweight, and the first tenon 11 of the cap beam 5 is inserted into the first tenon 12 of the column 1.

[0048] S6. A steel formwork is erected at the first slot 13 between the column 1 and the cap beam 5. Self-compacting ultra-high performance concrete is filled in the gap from the bottom of the first tenon to the top of the first tenon, filling the gap between the column 1 and the cap beam 5 and the first slot 13 to form a solid connection and complete the construction of the prefabricated pier column.

[0049] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A type of assembled double-column bridge pier, characterized in that, The structure includes a cap beam, beneath which columns and pile foundations are sequentially arranged. First tenons are symmetrically arranged on the left and right sides of the lower surface of the cap beam. First mortises and second tenons are respectively provided on the upper and lower surfaces of the columns. A pile foundation reinforcement section is provided at the upper end of the pile foundation. A second mortis is provided on the top surface of the pile foundation reinforcement section directly opposite the column. Self-compacting ultra-high performance concrete is filled around the first tenons from the bottom of the first mortis to the top of the first tenon. Self-compacting ultra-high performance concrete is also filled around the second tenons from the bottom of the second mortis to the top of the second tenon. The outward protrusion of the first tenon is greater than the depth of the first mortis, and the outward protrusion of the second tenon is greater than the depth of the second mortis. The width of the first tenon is less than the width of the first mortis, and the width of the second tenon is less than the width of the second mortis.

2. The assembled double-column bridge pier as described in claim 1, characterized in that, It also includes tie beams, which are positioned between the two pile foundation reinforcement sections.

3. A prefabricated double-column bridge pier as described in claim 1, characterized in that, A main slot is provided on the inner side of the reinforced section of the pile foundation, directly opposite the tie beam, and the two ends of the tie beam are adapted to the size of the main slot.

4. A prefabricated double-column bridge pier as described in claim 2, characterized in that, The space between the outer perimeter of both ends of the tie beam and the main slot is filled with self-compacting ultra-high performance concrete.

5. A prefabricated double-column bridge pier as described in claim 1, characterized in that, The first slot is provided at the position directly opposite the top surface of the column and the cap beam.

6. A prefabricated double-column bridge pier as described in claim 1, characterized in that, A second slot is provided at the position directly opposite the top surface of the reinforced section of the pile foundation and the column.

7. A prefabricated double-column bridge pier as described in claim 1, characterized in that, Both the columns and the cap beams are prefabricated structures in the factory.

8. A prefabricated double-column bridge pier as described in claim 1, characterized in that, The pile foundation, the reinforced section of the pile foundation, and the tie beam are all cast-in-place structures.

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