A bridge pier foundation structure suitable for large-sized decorative blocks and a deck arch bridge

Abstract

This application relates to a pier foundation structure suitable for large-sized decorative blocks and a through-arch bridge, comprising: a pier structure, the pier structure including a pier cap and pile foundations supporting the pier cap, a pier on the top of the pier cap for supporting an arch rib structure, and a pier cap cantilever extending from the pier cap towards the side span to support the pier decorative blocks; and pier decorative blocks, the pier decorative blocks being located on top of the pier cap and the pier cap cantilever extending along the transverse direction of the bridge and obscuring the pier, the pier decorative blocks having a first arc surface on the side near the side span that is consistent with the shape of the arch rib structure. The pier foundation structure of this application for large-sized decorative blocks has a pier cap cantilever extending from the pier cap towards the side span to support the pier decorative blocks. This pier cap cantilever is connected to the pier cap and is only used to support the pier decorative blocks, eliminating the need to construct pile foundations at the bottom of the pier cap cantilever, thereby greatly reducing the size of the pier cap and the number of pile foundations, and reducing the amount of excavation required for the foundation pit.

Description

Technical Field

[0001] This application relates to the field of bridge technology, and in particular to a pier foundation structure suitable for large-sized decorative blocks and a deck arch bridge. Background Technology

[0002] The foundation is a crucial load-bearing component of a bridge structure, transferring the load from the bridge superstructure to the ground. Currently, bridges have increasingly higher aesthetic demands, and some bridges, for aesthetic purposes, often require large decorative blocks outside the piers. These decorative blocks do not bear the load of the main structure, only their own weight, but their size is much larger than the piers. Conventional foundation design for such bridges considers the decorative blocks and the main structure together, requiring a very large foundation to address this issue. This results in a massive foundation size, low construction efficiency, and high project costs. Summary of the Invention

[0003] This application provides a bridge pier foundation structure and a deck arch bridge suitable for large-sized decorative blocks, in order to solve the problems of large-scale foundations supporting decorative blocks, low construction efficiency, and high project costs in related technologies.

[0004] The first aspect of this application provides a bridge pier foundation structure suitable for large-sized decorative blocks, including:

[0005] The pier structure includes a pier cap and a pile foundation supporting the pier cap. The top of the pier cap is provided with a pier for supporting the arch rib structure. The pier cap extends towards the side span with a pier cap cantilever arm that supports the decorative blocks of the pier.

[0006] A bridge pier decorative block is located at the top of the pier cap and the pier cap cantilever arm and covers the bridge pier along the transverse direction. The side of the bridge pier decorative block near the side span has a first arc surface that is consistent with the shape of the arch rib structure.

[0007] In some embodiments: the pier decorative block is a hollow structure with an open top, the pier is located inside the cavity of the pier decorative block, and the height of the pier decorative block is greater than the height of the pier.

[0008] In some embodiments, the pier cap, pier cantilever arm, pier, and pier decorative block are integrally cast reinforced concrete structures.

[0009] In some embodiments: the top surface of the cantilever arm is flush with the top surface of the foundation, the width of the cantilever arm is less than the width of the foundation and gradually decreases in the direction away from the foundation, and the thickness of the cantilever arm is less than the thickness of the foundation and gradually decreases in the direction away from the foundation.

[0010] In some embodiments: the top surface of the pier decorative block is parallel to the top surface of the pier cap, and the first arc surface smoothly transitions from the top surface of the pier decorative block toward the top surface of the pier cap cantilever arm.

[0011] The decorative block of the bridge pier has a second arc surface on the side near the middle span. The second arc surface smoothly transitions from the top surface of the decorative block to the top surface of the pier cap.

[0012] In some embodiments, the pile foundation has multiple piles, which are arranged in a row at the bottom of the pile cap.

[0013] The second aspect of this application provides a through-arch bridge, which uses the pier foundation structure suitable for large-sized decorative blocks described in any of the above embodiments.

[0014] In some embodiments, an arch rib structure located on top of the pier foundation structure is also included, the arch rib structure comprising an arch rib and a bridge deck, the arch rib and the bridge deck being connected by multiple hangers.

[0015] In some embodiments, the top of the bridge pier foundation structure is provided with a support for the bridge deck.

[0016] In some embodiments, the arch rib is a steel arch rib.

[0017] The beneficial effects of the technical solution provided in this application include:

[0018] This application provides a pier foundation structure and a deck arch bridge suitable for large-sized decorative blocks. The pier foundation structure for large-sized decorative blocks in this application includes a pier structure, which includes a pier cap and pile foundations supporting the pier cap. A pier for supporting the arch rib structure is provided on the top of the pier cap. The pier cap extends towards the side span and has a pier cap cantilever arm to support the pier decorative block. The pier decorative block is located on the top of the pier cap and the pier cap cantilever arm and covers the pier along the transverse direction of the bridge. A first arc surface with the same shape as the arch rib structure is provided on the side of the pier decorative block near the side span.

[0019] Therefore, the pier foundation structure of this application, applicable to large-sized decorative blocks, features a cantilever arm extending from the pier cap towards the side span to support the decorative blocks. This cantilever arm, connected to the pier cap, serves only to support the decorative blocks, eliminating the need for pile foundations at the bottom of the cantilever arm. This significantly reduces the size of the pier cap and the number of pile foundations, thereby reducing the amount of excavation required. The decorative blocks are located at the top of the pier cap and the cantilever arm, obscuring the pier along the transverse direction. A first arc surface, consistent with the arch rib structure's shape, is provided on the side of the decorative block near the side span, thus enhancing the bridge's appearance and making the arch bridge's lines more aesthetically pleasing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the bridge pier foundation structure according to an embodiment of this application;

[0022] Figure 2 for Figure 1 A cross-sectional view along the AA direction;

[0023] Figure 3 This is a schematic diagram of the structure of the under-bearing arch bridge according to an embodiment of this application.

[0024] Figure label:

[0025] 1. Pier decorative block; 2. Pier; 3. Pier cap; 4. Pier cap cantilever; 5. Pile foundation; 6. Support; 7. Arch rib; 8. Bridge deck; 9. Hanger. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] This application provides a pier foundation structure and a deck arch bridge suitable for large-sized decorative blocks, which can solve the problems of large-scale foundations supporting decorative blocks, low construction efficiency, and high project costs in related technologies.

[0028] See Figure 1 and Figure 2 As shown, the first aspect of this application provides a bridge pier foundation structure suitable for large-sized decorative blocks, including:

[0029] The bridge pier structure includes a pier cap 3 and pile foundations 5 supporting the pier cap 3. Multiple pile foundations 5 are arranged in a row at the bottom of the pier cap 3. A pier 2 for supporting the arch rib structure is provided at the top of the pier cap 3. The pier cap 3 extends towards the side span direction and has a pier cap cantilever 4 for supporting the pier decorative block 1.

[0030] A pier decorative block 1 is located at the top of the pier cap 3 and the pier cap cantilever 4, and it obstructs the pier 2 along the transverse direction of the bridge. The side of the pier decorative block 1 near the side span has a first arc surface that is consistent with the shape of the arch rib structure. The radius of the first arc surface is approximately the same as the radius of the arch rib structure.

[0031] The pier foundation structure of this application embodiment, applicable to large-sized decorative blocks, has a pier cap 4 extending from the pier cap 3 toward the side span to support the pier decorative block 1. The pier cap 4 is connected to the pier cap 3 and is only used to support the pier decorative block 1. There is no need to construct pile foundation 5 at the bottom of the pier cap 4, thereby greatly reducing the size of the pier cap 3 and the number of pile foundations 5, and reducing the amount of excavation of the foundation pit.

[0032] The pier decorative block 1 is located on top of the pier cap 3 and the pier cap cantilever 4 and covers the pier 2 along the transverse direction of the bridge. On the side of the pier decorative block 1 near the side span, there is a first arc surface that is consistent with the shape of the arch rib structure, thereby beautifying the shape of the bridge and making the shape of the arch bridge more beautiful.

[0033] Taking a designed arch bridge with a main span of 255m as an example, the pier foundation construction measures provided in this application save 2,160 cubic meters of concrete for the pier cap 3, 672 cubic meters of concrete for the pile foundation 5, reduce the excavation of the foundation pit by 4,320 cubic meters, save 4.88 million yuan in project cost, and save 5 months of construction time.

[0034] In some alternative embodiments: see Figure 1 and Figure 2 As shown in the figure, this application embodiment provides a bridge pier foundation structure suitable for large-sized decorative blocks. The bridge pier decorative block 1 of the bridge pier foundation structure is a hollow structure with an open top. The bridge pier 2 is located in the cavity of the bridge pier decorative block 1, and the height of the bridge pier decorative block 1 is greater than the height of the bridge pier 2.

[0035] In this embodiment, the pier decorative block 1 is a hollow structure with an open top, so that the pier 2 is located inside the cavity of the pier decorative block 1, thus concealing the pier 2 within the pier decorative block 1 and improving the aesthetic appearance of the arch bridge. In this embodiment, the pier cap 3, pier cap cantilever 4, pier 2, and pier decorative block 1 are integrally cast reinforced concrete structures, which facilitates construction and provides good overall integrity.

[0036] In some alternative embodiments: see Figure 1 and Figure 2 As shown, this application embodiment provides a bridge pier foundation structure suitable for large-sized decorative blocks. The top surface of the cantilever arm 4 of the bridge pier foundation structure is flush with the top surface of the pier 3. The width of the cantilever arm 4 is smaller than the width of the pier 3 and gradually decreases in the direction away from the pier 3. The thickness of the cantilever arm 4 is smaller than the thickness of the pier 3 and gradually decreases in the direction away from the pier 3.

[0037] In this embodiment, the cantilever arm 4 is located on one side of the pier cap 3, and its top surface is flush with the top surface of the pier cap, facilitating the installation and arrangement of the pier decorative block 1. To reduce the construction cost of the cantilever arm 4 and improve the construction period, in this embodiment, the width of the cantilever arm 4 is smaller than the width of the pier cap 3 and gradually decreases in the direction away from the pier cap 3; the thickness of the cantilever arm 4 is smaller than the thickness of the pier cap 3 and gradually decreases in the direction away from the pier cap 3, thereby reducing the volumetric size of the pier foundation structure.

[0038] In some alternative embodiments: see Figure 1 and Figure 2 As shown in the embodiment of this application, a bridge pier foundation structure suitable for large-sized decorative blocks is provided. The top surface of the bridge pier decorative block 1 is parallel to the top surface of the pier cap 3. The first arc surface smoothly transitions from the top surface of the bridge pier decorative block 1 towards the top surface of the pier cap cantilever 4. A second arc surface is provided on the side of the bridge pier decorative block 1 near the middle span. The second arc surface smoothly transitions from the top surface of the bridge pier decorative block 1 towards the top surface of the pier cap 3 to further enhance the beautiful lines of the arch bridge.

[0039] See Figure 3 As shown, a second aspect of this application provides a through-arch bridge that uses the pier foundation structure suitable for large-sized decorative blocks described in any of the above embodiments. It also includes an arch rib structure located at the top of the pier foundation structure, the arch rib structure comprising an arch rib 7 and a bridge deck 8, connected by multiple hangers 9. A support 6 for supporting the bridge deck 8 is provided at the top of the pier foundation structure, and the arch rib 7 is preferably a steel arch rib.

[0040] Working principle

[0041] This application provides a pier foundation structure and a deck arch bridge suitable for large-sized decorative blocks. The pier foundation structure for large-sized decorative blocks in this application includes a pier structure, which includes a pier cap 3 and a pile foundation 5 supporting the pier cap 3. A pier 2 for supporting the arch rib structure is provided on the top of the pier cap 3. The pier cap 3 extends towards the side span and has a pier cap cantilever 4 for supporting the pier decorative block 1. The pier decorative block 1 is located on the top of the pier cap 3 and the pier cap cantilever 4 and covers the pier 2 along the transverse direction of the bridge. A first arc surface with the same shape as the arch rib structure is provided on the side of the pier decorative block 1 near the side span.

[0042] Therefore, the pier foundation structure of this application, applicable to large-sized decorative blocks, has a cantilever arm 4 extending from the pier cap 3 towards the side span to support the pier decorative block 1. This cantilever arm 4, connected to the pier cap 3, is only used to support the pier decorative block 1, eliminating the need to construct pile foundations 5 at the bottom of the cantilever arm 4. This significantly reduces the size of the pier cap 3 and the number of pile foundations 5, thus reducing the amount of excavation required for the foundation pit. The pier decorative block 1 is located at the top of the pier cap 3 and the cantilever arm 4 and shields the pier 2 along the transverse direction of the bridge. On the side of the pier decorative block 1 near the side span, a first arc surface consistent with the shape of the arch rib structure is provided, thereby beautifying the shape of the bridge and making the arch bridge's lines more beautiful.

[0043] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0044] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A bridge pier foundation structure suitable for large-sized decorative blocks, characterized in that, include: The pier structure includes a pier cap (3) and a pile foundation (5) supporting the pier cap (3). The top of the pier cap (3) is provided with a pier (2) for supporting the arch rib structure. The pier cap (3) extends towards the side span direction with a pier cantilever arm (4) for supporting the pier decorative block (1). Pier decorative block (1), the pier decorative block (1) is located at the top of the pier cap (3) and the pier cap cantilever (4) and covers the pier (2) along the transverse direction of the bridge. The pier decorative block (1) has a first arc surface on the side near the side span that is consistent with the shape of the arch rib structure. The top surface of the pier decorative block (1) is parallel to the top surface of the pier cap (3), and the first arc surface smoothly transitions from the top surface of the pier decorative block (1) toward the top surface of the pier cap cantilever arm (4). The bridge pier decorative block (1) has a second arc surface on the side near the middle span. The second arc surface smoothly transitions from the top surface of the bridge pier decorative block (1) to the top surface of the pier cap (3).

2. The bridge pier foundation structure suitable for large-sized decorative blocks as described in claim 1, characterized in that: The bridge pier decorative block (1) is a hollow structure with an open top. The bridge pier (2) is located inside the cavity of the bridge pier decorative block (1). The height of the bridge pier decorative block (1) is greater than the height of the bridge pier (2).

3. A bridge pier foundation structure suitable for large-sized decorative blocks as described in claim 1 or 2, characterized in that: The foundation (3), foundation cantilever (4), pier (2) and pier decorative block (1) are integrally cast reinforced concrete structures.

4. A bridge pier foundation structure suitable for large-sized decorative blocks as described in claim 1, characterized in that: The top surface of the cantilever arm (4) of the pier is flush with the top surface of the pier (3). The width of the cantilever arm (4) is smaller than the width of the pier (3) and gradually decreases in the direction away from the pier (3). The thickness of the cantilever arm (4) is smaller than the thickness of the pier (3) and gradually decreases in the direction away from the pier (3).

5. A bridge pier foundation structure suitable for large-sized decorative blocks as described in claim 1, characterized in that: The pile foundation (5) is provided with multiple piles, and the multiple pile foundations (5) are arranged in a row at the bottom of the pile cap (3).

6. A type of under-deck arch bridge, characterized in that, The aforementioned under-arch bridge uses the pier foundation structure suitable for large-sized decorative blocks as described in any one of claims 1 to 5.

7. A type of under-deck arch bridge as described in claim 6, characterized in that: It also includes an arch rib structure located on top of the pier foundation structure, the arch rib structure including an arch rib (7) and a bridge deck (8), the arch rib (7) and the bridge deck (8) being connected by multiple hangers (9).

8. A type of under-deck arch bridge as described in claim 7, characterized in that: The top of the bridge pier foundation structure is provided with a support (6) to support the bridge deck (8).

9. A type of under-deck arch bridge as described in claim 7, characterized in that: The arch rib (7) is a steel arch rib.

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