Buttress and temporary buttress device

Abstract

The invention provides a buttress and a temporary buttress device.The buttress comprises a bearing platform, four stand columns, two cross beams and two longitudinal beams, the bearing platform is used for being buried in a riverbed, and the four stand columns are installed on the bearing platform in a rectangular array; the four stand columns are divided into two sets of transverse stand columns in the transverse direction, each set of transverse stand columns comprises two stand columns located in the same transverse direction, the upper end of each set of transverse stand columns is provided with a transverse beam extending in the transverse direction to form a transverse supporting frame, and the four stand columns are divided into two sets of longitudinal stand columns in the longitudinal direction to form a transverse supporting frame. Each set of longitudinal stand columns comprises two stand columns located in the same longitudinal direction, the two longitudinal beams are installed on the two cross beams, each longitudinal beam is located at the upper end of one set of longitudinal stand columns and extends in the longitudinal direction to form a longitudinal supporting frame, and the transverse direction is perpendicular to the longitudinal direction. The buttress has good supporting strength, and the anti-scouring performance and the anti-collision performance are effectively improved.

Description

Technical Field

[0001] This invention belongs to the technical field of temporary support devices, and specifically relates to a support and a temporary support device. Background Technology

[0002] The bridge is an all-steel arch bridge with a single span, crossing the river in one span, with a main span of 336 meters. The bridge crosses a non-navigable river within a natural water source protection area, where the river experiences significant alternation between flood and dry seasons. The maximum discharge capacity during the flood season reaches 3210 m³. 3 The riverbed has a flow velocity of up to 6 m / s, making it unsuitable for construction during the flood season. The riverbed bottom consists of a pebble stratum, classified as Class IV soft rock. Considering both construction costs and safety factors, the bridge construction adopted a beam-first, arch-later method, with the steel box girder installed using a bidirectional jacking method.

[0003] Before construction, the temporary jacking supports need to be constructed during the dry season of the river. Subsequently, the steel arch is installed using a combination of overall lifting and support assembly. The steel arch assembly support is set on the steel box girder bridge deck, and its foundation is embedded in the pebble layer of the riverbed.

[0004] However, the existing pier structure is difficult to adapt to the alternating hydrological conditions of the dry and flood seasons, and cannot simultaneously meet the construction requirements of steel box girder jacking and steel arch rib bridge deck installation, affecting support strength, construction progress and overall safety. Summary of the Invention

[0005] The present invention provides a support pier and a temporary support pier device, which has good supporting strength and effectively improves erosion resistance and impact resistance.

[0006] The technical solution of the present invention is as follows:

[0007] A type of support, comprising:

[0008] A foundation platform, used to be buried in the riverbed;

[0009] Four columns are mounted on the support platform in a rectangular array.

[0010] Two crossbeams, the four columns are divided into two groups of horizontal columns along the horizontal direction, each group of horizontal columns includes two columns located in the same horizontal direction, and a crossbeam extending horizontally is set at the upper end of each group of horizontal columns to form a horizontal support frame.

[0011] Two longitudinal beams are provided. The four columns are divided into two groups of longitudinal columns along the longitudinal direction. Each group of longitudinal columns includes two columns located in the same longitudinal direction. The two longitudinal beams are installed on the two transverse beams. Each longitudinal beam is located at the upper end of a group of longitudinal columns and extends along the longitudinal direction to form a longitudinal support frame that is perpendicular to the transverse direction and the longitudinal direction.

[0012] A type of support, comprising:

[0013] A foundation platform, used to be buried in the riverbed;

[0014] Six columns are mounted on the support platform in a rectangular array.

[0015] The six columns are divided into three groups of horizontal columns along the horizontal direction. Each group of horizontal columns includes two columns located in the same horizontal direction. Each group of horizontal columns has a horizontal beam extending horizontally at its upper end, forming a horizontal support frame.

[0016] Two longitudinal beams are provided. The six columns are divided into two groups of longitudinal columns along the longitudinal direction. Each group of longitudinal columns includes three columns located in the same longitudinal direction. The two longitudinal beams are installed on the three transverse beams. Each longitudinal beam is located at the upper end of a group of longitudinal columns and extends along the longitudinal direction to form a longitudinal support frame that is perpendicular to the longitudinal direction.

[0017] Furthermore, in the aforementioned support pier, adjacent two columns are connected by a connecting component.

[0018] Furthermore, in the aforementioned support pier, the connecting assembly includes two horizontally arranged connecting beams, and a diagonal brace is provided between two adjacent columns along the longitudinal direction. The diagonal brace is located between the two connecting beams and forms a Z-shaped structure with the two connecting beams.

[0019] Furthermore, in the aforementioned support pier, both ends of the crossbeam extend from the edge of the column below along the extension direction, and the bottom of the crossbeam is connected to the column through an inclined connecting pipe.

[0020] Furthermore, the support pier also includes a gabion, which is arranged around the four columns and contains supporting material.

[0021] Furthermore, in the aforementioned support pier, the gabion is in the shape of a truncated cone, with the slope of the water-facing side of the gabion being 1:2 and the slope of the remaining sides being 1:0.5; and / or,

[0022] The bottom of the gabion is located at the mudline, and the top of the gabion is level with the flood season water level; and / or,

[0023] The supporting material is pebbles.

[0024] Furthermore, in the aforementioned support pier, the crossbeam is connected to the top of the column via a pre-embedded steel plate, and the connecting assembly is connected to two adjacent columns via pre-embedded steel plates; and / or,

[0025] The columns and foundations are constructed of steel or concrete; and / or...

[0026] The support platform is a cuboid structure; and / or,

[0027] The crossbeams and longitudinal beams are H-beams; and / or,

[0028] The connecting beam and the diagonal brace are both channel steel.

[0029] A temporary pier support device for bridge jacking construction, comprising:

[0030] Multiple standard supports are provided, spaced apart along the bridge jacking direction, to support the non-mid-span area of ​​the bridge beam. The standard supports are the aforementioned supports.

[0031] Multiple mid-span piers are provided, which are spaced apart at the mid-span of the bridge along the bridge jacking direction to support the mid-span area of ​​the bridge beam. The mid-span piers are the aforementioned type of piers.

[0032] Furthermore, in the temporary support device, the dimensions of the foundation of the standard support are 7.5m×6.5m×3m, the dimensions of the foundation of the mid-span support are 9.6m×6.5m×3m, the diameter of the column of the standard support and the mid-span support is 1.2m, and the bridge jacking direction is consistent with the longitudinal direction.

[0033] The beneficial effects of this invention are as follows:

[0034] The present invention provides a type of pier that, by expanding the pier cap, not only increases the pier's own weight but also increases the embedded volume, thereby improving the stability of the pier structure.

[0035] The pier uses a combination of horizontal and vertical beams, which not only provides sufficient operating space for workers during the jacking process, but also ensures the safety of the jacking of the steel box girder and the assembly of the steel arch rib bridge deck.

[0036] The pier uses a combination of a foundation and concrete columns, achieving good erosion resistance and impact protection.

[0037] The pier uses gabions made of lead wire, which can guide the flow and reduce the impact of water flow. At the same time, it reduces the structural volume, lowers the cost, and further improves the overall stability and safety of the pier, ensuring the stability of construction during the flood season.

[0038] A temporary support device, employing a gravity-supported structure, not only improves the support strength but also enhances the structure's scour resistance and impact resistance, thereby improving construction progress and safety, and meeting the construction requirements of various construction stages, including load, flood season scour, and dry season pebble riverbed conditions. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the standard pier of a temporary support device according to the present invention, along the bridge direction;

[0040] Figure 2 This is a schematic diagram of the transverse direction of a standard pier of a temporary support device according to the present invention.

[0041] Figure 3 This is a three-dimensional schematic diagram of a mid-span support pier of a temporary support device according to the present invention;

[0042] Figure 4 This is a schematic diagram of the transverse direction of the mid-span pier of a temporary support device according to the present invention;

[0043] Figure 5 This is a schematic diagram of a gabion with a support pier according to the present invention;

[0044] Figure 6 This is a top view schematic diagram of a gabion with a support pier according to the present invention.

[0045] In the diagram: 1. Foundation; 2. Column; 3. Horizontal beam; 4. Longitudinal beam; 5. Connecting component; 6. Connecting pipe; 7. Gabion; 8. Supporting material; 21. Embedded steel plate; 51. Connecting beam; 52. Diagonal brace; 71. Water-facing side; 72. Mudline; 73. Flood season water level. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0047] Example 1:

[0048] like Figure 1 and Figure 2 As shown, this embodiment provides a pier, including a foundation 1, four columns 2, two crossbeams 3, and two longitudinal beams 4. This pier can serve as a standard pier to support the non-mid-span area of ​​the bridge beam.

[0049] The foundation 1 is preferably a rectangular parallelepiped structure and is embedded in the riverbed. The dimensions of the foundation 1 are preferably 7.5m × 6.5m × 3m.

[0050] The four columns 2 are cylindrical structures, and are installed in a rectangular array on the foundation 1. The columns 2 are preferably made of concrete, with C30 being the preferred concrete grade. Adjacent columns 2 are spaced 3 meters apart.

[0051] The four columns 2 are divided into two groups of horizontal columns 2 along the horizontal direction. Each group of horizontal columns 2 includes two columns 2 located in the same horizontal direction. A horizontal beam 3 extending horizontally is set at the upper end of each group of horizontal columns 2 to form a horizontal support frame. The horizontal beam 3 can preferably be two H588 steel sections (H588×300×12×20mm).

[0052] Two longitudinal beams 4 and four columns 2 are divided into two groups of longitudinal columns 2 along the longitudinal direction. Each group of longitudinal columns 2 includes two columns 2 located in the same longitudinal direction. The two longitudinal beams 4 are installed on two transverse beams 3, and each longitudinal beam 4 is located at the upper end of a group of longitudinal columns 2 and extends longitudinally to form a longitudinal support frame, which is perpendicular to the longitudinal direction. The longitudinal beams 4 can preferably be three H588 steel sections (H588×300×12×20mm).

[0053] Specifically, the foundation 1 is first buried in the gravel riverbed. Then, four columns 2 are installed on top of the foundation 1 in a rectangular array. Next, the four columns 2 are divided into two groups of transverse columns 2 in the transverse direction (straight along the bridge). Then, two crossbeams 3 are installed on the two groups of transverse columns 2 respectively using pre-embedded steel plates 21. The centerlines of the two crossbeams 3 coincide with the centerlines of the two groups of transverse columns 2, forming a transverse support frame. Then, the four columns 2 are divided into two groups of longitudinal columns 2 in the longitudinal direction (crossing the bridge). Next, two longitudinal beams 4 are installed on the two groups of longitudinal columns 2 respectively. The centerlines of the two longitudinal beams 4 coincide with the centerlines of the two groups of longitudinal columns 2, forming a longitudinal support frame. The crossbeams 3 and longitudinal beams 4 are arranged perpendicularly.

[0054] In the aforementioned structure, the addition of the pier cap 1 not only increases the self-weight of the pier but also increases the embedded volume, thereby improving the stability of the pier structure. Furthermore, the inclusion of crossbeams 3 and longitudinal beams 4 not only provides sufficient operating space for workers during the jacking process but also ensures the safety of the steel box girder jacking and the vertical assembly of the steel arch rib bridge deck. The combination of the pier cap 1 and the concrete columns 2 achieves good scour resistance and impact resistance. This pier employs a gravity-supported structure, which not only improves the support strength but also enhances the structure's scour resistance and impact resistance, thereby improving construction progress and safety, and meeting the construction requirements of various stages, including load, flood season scour, and the pebble riverbed during the dry season.

[0055] Example 2:

[0056] like Figure 3 and Figure 4 As shown, this embodiment also provides a pier, including a foundation 1, six columns 2, three crossbeams 3, and two longitudinal beams 4. This pier can serve as a mid-span pier to support the mid-span area of ​​the bridge beam.

[0057] The foundation 1 is preferably a rectangular parallelepiped structure and is embedded in the riverbed. The dimensions of the foundation 1 are preferably 9.6m × 6.5m × 3m.

[0058] The six columns 2 are all cylindrical structures, and are installed in a rectangular array on the foundation 1. The columns 2 are preferably made of concrete, and the concrete grade is preferably C30. The spacing between adjacent columns 2 is 3m.

[0059] The six columns 2 are divided into three groups of horizontal columns 2 along the horizontal direction. Each group of horizontal columns 2 includes two columns 2 located in the same horizontal direction. A horizontal beam 3 extending in the horizontal direction is set at the upper end of each group of horizontal columns 2 to form a horizontal support frame.

[0060] The six columns 2 are divided into two groups of longitudinal columns 2 along the longitudinal direction. Each group of longitudinal columns 2 includes three columns 2 located in the same longitudinal direction. Two longitudinal beams 4 are installed on three transverse beams 3, and each longitudinal beam 4 is located at the upper end of a group of longitudinal columns 2 and extends along the longitudinal direction to form a longitudinal support frame that is perpendicular to the longitudinal direction.

[0061] Specifically, the foundation 1 is first buried in the gravel riverbed. Six columns 2 are then installed on top of the foundation 1 in a rectangular array. Next, the six columns 2 are divided into three groups of transverse columns 2 in the transverse direction (straight along the bridge). Three crossbeams 3 are then installed on the three groups of transverse columns 2 via pre-embedded steel plates 21. The centerlines of the three crossbeams 3 coincide with the centerlines of two groups of transverse columns 2, forming a transverse support frame. Then, the six columns 2 are divided into two groups of longitudinal columns 2 in the longitudinal direction (crossing the bridge). Two longitudinal beams 4 are then installed on the two groups of longitudinal columns 2, with the centerlines of the two longitudinal beams 4 coinciding with the centerlines of the two groups of longitudinal columns 2, forming a longitudinal support frame. The crossbeams 3 and longitudinal beams 4 are arranged perpendicularly.

[0062] In the aforementioned structure, the addition of the pier cap 1 not only increases the self-weight of the pier but also increases the embedded volume, thereby improving the stability of the pier structure. Furthermore, the inclusion of crossbeams 3 and longitudinal beams 4 not only provides sufficient operating space for workers during the jacking process but also ensures the safety of the steel box girder jacking and the vertical assembly of the steel arch rib bridge deck. The combination of the pier cap 1 and the concrete columns 2 achieves good scour resistance and impact resistance. This pier employs a gravity-supported structure, which not only improves the support strength but also enhances the structure's scour resistance and impact resistance, thereby improving construction progress and safety, and meeting the construction requirements of various construction stages, including load, flood season scour, and the pebble riverbed during the dry season.

[0063] Other design features common to both Embodiment 1 and Embodiment 2 are described in detail below.

[0064] like Figure 1As shown, in a preferred embodiment, two adjacent columns 2 are connected by a connecting assembly 5. The connecting assembly 5 includes two horizontally arranged connecting beams 51, preferably No. 20 channel steel. A diagonal brace 52, also preferably No. 20 channel steel, is provided between two adjacent columns 2 along the longitudinal direction (transverse bridge direction). The diagonal brace 52 is located between the two connecting beams 51 and forms a Z-shaped structure with the two connecting beams 51. Both ends of the connecting beams 51 are connected to the two adjacent columns 2 via embedded steel plates 21, and the two horizontally arranged connecting beams 51 are parallel. The two ends of the diagonal brace 52 are obliquely installed on the two adjacent columns 2 along the longitudinal direction (transverse bridge direction) and connected to the two columns 2 via embedded steel plates 21. One end of the diagonal brace 52 is close to the upper connecting beam 51, and the other end is close to the lower connecting beam 51, forming a Z-shaped support mechanism. This connecting assembly 5 further improves the support strength and stability of the pier.

[0065] like Figure 2 As shown, in a preferred embodiment, both ends of the crossbeam 3 extend from the edge of the lower column 2 along the extension direction, and the bottom of the crossbeam 3 is connected to the column 2 via an inclined connecting pipe 6. The connecting pipe 6 is preferably a 530 steel pipe. Both ends of the crossbeam 3 extend 2.1m from the edge of the lower column 2 along the extension direction, and then are connected to the vertically positioned column 2 at the outer bottom end of the crossbeam 3 via the connecting pipe 6, which is inclined. The connecting pipe 6 can be installed at one end of the crossbeam 3 or at both ends. This arrangement not only improves the stability of the support but also increases the operating space for workers and meets the applicability requirements of upstream and downstream river channels.

[0066] like Figure 5 and Figure 6 As shown, in a preferred embodiment, a gabion 7 is also included. The gabion 7 is arranged around four uprights 2, and a supporting material 8 is placed inside the gabion 7. The supporting material 8 is preferably pebbles. The gabion 7 is installed around the four uprights 2, with the top of the gabion 7 flush with the flood season water level 73 and the bottom of the gabion 7 located on the mudline 72. Pebbles from the riverbed are used locally as the supporting material 8 to fill the gabion 7. The arrangement of the gabion 7 allows for the use of on-site pebbles for scour protection of the supports, which not only further improves the support strength of the supports but also saves construction costs, increases construction speed, and shortens the construction period.

[0067] like Figure 5As shown, in a preferred embodiment, the gabion 7 is a truncated cone shape, with the slope of the water-facing side 71 of the gabion 7 being 1:2 and the slope of the remaining sides being 1:0.5. This design of the gabion 7, with a gentle front and a steep back, achieves the functions of guiding the flow and reducing the impact force of the water flow, while reducing the structural volume, lowering the cost, and further improving the overall stability and safety of the support, ensuring the stability of construction during the flood season.

[0068] like Figure 5 As shown, the bottom of the gabion 7 is located on the mudline 72, and the top of the gabion 7 is flush with the flood season water level 73. This arrangement can precisely resist scouring, further improve the scouring resistance of the supports, and ensure the progress of construction.

[0069] like Figure 5 As shown, support material 8 is pebbles. These materials can be sourced locally from the riverbed, saving costs and improving construction efficiency.

[0070] like Figure 1 As shown, in a preferred embodiment, the crossbeam 3 is connected to the top of the column 2 via a pre-embedded steel plate 21, and the connecting assembly 5 is connected to two adjacent columns 2 via pre-embedded steel plates 21. This arrangement facilitates the installation of the connecting assembly 5 between two adjacent columns 2, improving installation efficiency.

[0071] like Figure 1 As shown, column 2 and pier 1 can be constructed using either steel or concrete. Steel supports are the preferred material for temporary supports in the industry due to their lightweight nature and recyclability. Given the project's specific characteristics, the temporary supports under the beams span both the steel beam jacking and steel arch installation phases, resulting in a lengthy construction period. Concrete structures not only control costs but also provide good erosion resistance and impact resistance, especially considering the large amount of debris carried downstream during river floods.

[0072] Example 3:

[0073] like Figures 1-4 As shown, this embodiment also provides a temporary support device for the jacking construction of bridges, including multiple standard supports and multiple mid-span supports.

[0074] Multiple standard supports are spaced apart along the bridge jacking direction to support the non-mid-span area of ​​the bridge beam. The standard supports adopt one type of support in Example 1.

[0075] Multiple mid-span piers are spaced apart at the mid-span of the bridge along the bridge jacking direction to support the mid-span area of ​​the bridge beam. The mid-span piers adopt one of the pier types in Example 2.

[0076] Specifically, multiple standard piers are placed parallel to each other and spaced apart in the non-mid-span area along the bridge jacking direction, and multiple mid-span piers are placed parallel to each other and spaced apart in the mid-span area along the bridge jacking direction to form a temporary pier device.

[0077] The temporary support structure adopts a gravity support structure, which can meet the load requirements of each construction stage, resist the scouring of the flood season, and adapt to the geological conditions of the gravel riverbed during the dry season. It not only improves the support strength, but also improves the scouring resistance and collision resistance of the structure, thereby improving the construction progress and construction safety.

[0078] like Figure 1 and Figure 4 As shown, in a preferred embodiment, the dimensions of the foundation 1 of the standard pier are 7.5m × 6.5m × 3m, and the dimensions of the foundation 1 of the mid-span pier are 9.6m × 6.5m × 3m. The diameter of the column 2 of both the standard pier and the mid-span pier is 1.2m, and the bridge jacking direction is consistent with the longitudinal direction. By enlarging the foundation 1, the self-weight and embedded volume are greatly increased, effectively improving the scour resistance and collision resistance of the pier.

[0079] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A support pier, characterized in that, include: Pier (1), used for burying in the riverbed; Four columns (2) are installed in a rectangular array on the support platform (1); Two crossbeams (3), the four columns (2) are divided into two groups of horizontal columns (2) along the horizontal direction, each group of horizontal columns (2) includes two columns (2) located in the same horizontal direction, and a crossbeam (3) extending horizontally is set at the upper end of each group of horizontal columns (2) to form a horizontal support frame. Two longitudinal beams (4), the four columns (2) are divided into two groups of longitudinal columns (2) along the longitudinal direction, each group of longitudinal columns (2) includes two columns (2) located in the same longitudinal direction, the two longitudinal beams (4) are installed on the two cross beams (3), and each longitudinal beam (4) is located at the upper end of a group of longitudinal columns (2) and extends along the longitudinal direction to form a longitudinal support frame that is perpendicular to the longitudinal direction.

2. A type of support pier, characterized in that, include: Pier (1), used for burying in the riverbed; Six columns (2) are installed in a rectangular array on the support platform (1); Three crossbeams (3), the six columns (2) are divided into three groups of horizontal columns (2) along the horizontal direction, each group of horizontal columns (2) includes two columns (2) located in the same horizontal direction, and a crossbeam (3) extending horizontally is set at the upper end of each group of horizontal columns (2) to form a horizontal support frame. Two longitudinal beams (4), the six columns (2) are divided into two groups of longitudinal columns (2) along the longitudinal direction, each group of longitudinal columns (2) includes three columns (2) located in the same longitudinal direction, the two longitudinal beams (4) are installed on the three cross beams (3), and each longitudinal beam (4) is located at the upper end of a group of longitudinal columns (2) and extends along the longitudinal direction to form a longitudinal support frame that is perpendicular to the longitudinal direction.

3. The support pier as described in claim 1 or 2, characterized in that, The two adjacent columns (2) are connected by a connecting component (5).

4. The support pier as described in claim 3, characterized in that, The connecting component (5) includes two horizontally arranged connecting beams (51), and a diagonal brace (52) is provided between two adjacent columns (2) along the longitudinal direction. The diagonal brace (52) is located between the two connecting beams (51) and forms a Z-shaped structure with the two connecting beams (51).

5. The support pier as described in claim 1 or 2, characterized in that, The two ends of the crossbeam (3) extend from the edge of the column (2) below along the extension direction, and the bottom of the crossbeam (3) is connected to the column (2) through an inclined connecting pipe (6).

6. The support pier as described in claim 1 or 2, characterized in that, It also includes a gabion (7), which is arranged around the four columns (2), and a supporting material (8) is provided inside the gabion (7).

7. The support pier as described in claim 6, characterized in that, The gabion (7) is in the shape of a truncated cone, with the slope of the water-facing side (71) of the gabion (7) being 1:2 and the slope of the other sides being 1:0.5; and / or, The bottom of the gabion (7) is located on the mudline (72), and the top of the gabion (7) is flush with the flood season water level (73); and / or, The supporting material (8) is pebbles.

8. The support pier as described in claim 4, characterized in that, The crossbeam (3) is connected to the top of the column (2) via a pre-embedded steel plate (21), and the connecting assembly (5) is connected to two adjacent columns (2) via pre-embedded steel plates (21); and / or, The column (2) and the foundation (1) are made of steel or concrete; and / or, The support platform (1) is a cuboid structure; and / or, The crossbeam (3) and longitudinal beam (4) are H-beams; and / or, The connecting beam (51) and the diagonal brace (52) are both channel steel.

9. A temporary pier support device for bridge jacking construction, characterized in that, include: Multiple standard supports are provided at intervals along the bridge jacking direction to support the non-mid-span area of ​​the bridge beam. The standard supports are the supports described in any one of claims 1, 3-8. Multiple mid-span supports are provided, which are spaced apart at the mid-span of the bridge along the bridge jacking direction, for supporting the mid-span area of ​​the bridge beam. The mid-span supports are the supports described in any one of claims 2-8.

10. The temporary support device as described in claim 9, characterized in that, The dimensions of the foundation (1) of the standard pier are 7.5m×6.5m×3m, the dimensions of the foundation (1) of the mid-span pier are 9.6m×6.5m×3m, the diameter of the column (2) of the standard pier and the mid-span pier is 1.2m, and the bridge jacking direction is consistent with the longitudinal direction.

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