REAR-ANCHORED V-SHAPED PIER OF STEEL STRUCTURE OF THREE-LEGGED STAR-SHAPED PEDESTRIAN LANDSCAPE BRIDGE AND CONSTRUCTION METHOD

Abstract

The present disclosure provides a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge and a construction method. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge is applied to a main bridge arch that includes three arch legs connected into a star shape having three legs, and includes a deck-type arch-footed V-shaped pier, where the deck-type arch-footed V-shaped pier is disposed at a rear end of each arch leg. The deck-type arch-footed V-shaped pier has a top connected to the arch leg and a bottom hinged with a pile foundation of a bearing platform pre-poured on a construction ground. A tie rod is connected between the rear end of the arch leg and the pile foundation of the bearing platform, and an anchor cable tensioning structure configured to tension the tie rod is disposed on the pile foundation of the bearing platform. The present disclosure meets requirements for mounting a large-span bridge arch on a soft soil foundation, and implements mounting effect of the large-span bridge arch.

Claims

1. A rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge, applied to a main bridge arch that comprises three arch legs connected into a star shape having three legs, and comprising a deck-type arch-footed V-shaped pier, wherein the deck-type arch-footed V-shaped pier is disposed at a rear end of each arch leg; the deck-type arch-footed V-shaped pier has a top connected to the arch leg and a bottom hinged with a pile foundation of a bearing platform pre-poured on a construction ground; and a tie rod is connected between the rear end of the arch leg and the pile foundation of the bearing platform, and an anchor cable tensioning structure configured to tension the tie rod is disposed on the pile foundation of the bearing platform.

2. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 1, wherein a one-way hinge assembly is disposed at the bottom of the deck-type arch-footed V-shaped pier; the one-way hinge assembly comprises a first lug plate, a second lug plate, and a pin shaft; and the first lug plate is connected to the bottom of the deck-type arch-footed V-shaped pier, the second lug plate is connected to the pile foundation of the bearing platform, the pin shaft horizontally penetrates through the first lug plate and the second lug plate, and the first lug plate and the second lug plate are hinged via the pin shaft.

3. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 2, wherein there are a plurality of groups of one-way hinge assemblies that are spaced apart, there are a plurality of groups of tie rods that are spaced apart, and there are a plurality of groups of anchor cable tensioning structures that correspond to the plurality of groups of tie rods.

4. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 1, wherein a fixing hinge support is disposed on the deck-type arch-footed V-shaped pier; and a bottom side of the fixing hinge support is connected to a foundation bolt pre-buried in the pile foundation of the bearing platform, a welded steel plate is disposed on a top side of the fixing hinge support, and a gap is disposed between the welded steel plate and the deck-type arch-footed V-shaped pier.

5. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 1, wherein the tie rod comprises a pre-stressed steel beam; the anchor cable tensioning structure comprises an anchor jack, and a supporting steel pipe and a P-shaped anchor that are pre-buried on the pile foundation of the bearing platform; the supporting steel pipe is sleeved on the pre-stressed steel beam; the anchor jack is mounted on the rear end of the arch leg; and the pre-stressed steel beam has one end connected to the anchor jack in a tensioned manner and the other end penetrating through an anchor hole of the P-shaped anchor and fixedly buried in the pile foundation of the bearing platform.

6. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 5, wherein the anchor cable tensioning structure comprises an under-anchor reinforcement mesh, an under-anchor spiral reinforcement, and a steel anchor beam; the under-anchor reinforcement mesh is pre-buried in the pile foundation of the bearing platform, and a bottom of the pre-stressed steel beam penetrates through the under-anchor spiral reinforcement and is sequentially connected to the under-anchor reinforcement mesh and the P-shaped anchor; the steel anchor beam is rigidly connected to the arch leg; and a top of the pre-stressed steel beam is connected to the steel anchor beam.

7. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 6, wherein the pre-stressed steel beam is connected to a vacuum grouting pipe and a slurry discharge pipe; the vacuum grouting pipe has a bottom buried in the pile foundation of the bearing platform and connected to the supporting steel pipe and a top extending outside a top of the pile foundation of the bearing platform; the top of the pre-stressed steel beam is nested in the supporting steel pipe; the slurry discharge pipe penetrates through the steel anchor beam and is connected to the supporting steel pipe; and the pre-stressed steel beam is nested in a metal corrugated pipe, and two opposite ends of the metal corrugated pipe are detachably connected to two supporting steel pipes respectively.

8. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 1, wherein the pile foundation of the bearing platform comprises a plurality of rock-socketed piles spaced apart along a vertical direction and a reinforced concrete bearing platform poured on tops of the plurality of rock-socketed piles, the plurality of rock-socketed piles form a group of foundation piles, and a concrete cushion is disposed at a bottom side of the pile foundation of the bearing platform.

9. The rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to claim 4, wherein the fixing hinge support is connected to a bearing plate and a shear-resistant connector that are pre-buried in the pile foundation of the bearing platform, and the shear-resistant connector is mounted on a side, away from the fixing hinge support, of the bearing plate, and the bearing plate is further connected to a fixing member for fixing the bearing plate to a top of the pile foundation of the bearing platform.

10. A method for constructing a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge, the steps comprising: erecting temporary trestle bridges along extension directions of the three arch legs of the main bridge arch, excavating pits at arch feet of the three arch legs of the main bridge arch, and pouring pile foundations of bearing platforms; mounting the deck-type arch-footed V-shaped pier at the arch feet of the three arch legs of the main bridge arch, to form a hinged structure between the bottom of the deck-type arch-footed V-shaped pier and the pile foundation of the bearing platform; and mounting, at the rear end of the arch leg, the tie rod and the anchor cable tensioning structure for tensioning the tie rod, to enable the top of the deck-type arch-footed V-shaped pier to rotate vertically; hoisting and splicing, on the temporary trestle bridge, segments of the main bridge arch, to enable the three arch legs of the main bridge arch to be connected into the three-legged star-shaped pedestrian landscape bridge; removing the temporary trestle bridge; activating the anchor cable tensioning structure to tension the tie rod to a design value, to enable the deck-type arch-footed V-shaped pier to rotate relative to the pile foundation of the bearing platform, and complete cambering and rigid connection of the three arch legs; and converting the deck-type arch-footed V-shaped pier into a fixedly connected structure, encapsulating and cementing the deck-type arch-footed V-shaped pier and the pile foundation of the bearing platform with concrete, and backfilling the pit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0038] FIG. 1 is a schematic diagram of an overall mounting structure of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure;

[0039] FIG. 2 is a schematic diagram from another perspective of a mounting structure of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure;

[0040] FIG. 3 is a schematic diagram of mounting structures of a deck-type arch-footed V-shaped pier and a pile foundation of a bearing platform of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure;

[0041] FIG. 4 is an A-A view of FIG. 3;

[0042] FIG. 5 is a schematic diagram of a mounting structure of an anchor cable tensioning structure of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure;

[0043] FIG. 6 is a schematic diagram of mounting structures of a pile foundation of a bearing platform of an anchor cable tensioning structure, a one-way hinge assembly, and a fixing hinge support of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure;

[0044] FIG. 7 is a B-B view of FIG. 6;

[0045] FIG. 8 is a schematic diagram of a mounting structure of a one-way hinge assembly of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure;

[0046] FIG. 9 is a schematic diagram from another perspective of a mounting structure of a one-way hinge assembly of a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge according to an embodiment of the present disclosure; and

[0047] FIG. 10 is a C-C view of FIG. 6.

REFERENCE NUMERALS

[0048] 1: deck-type arch-footed V-shaped pier; 2: pile foundation of bearing platform; 21: rock-socketed pile; 22: reinforced concrete bearing platform; 23: foundation bolt; 3: tie rod; 31: vacuum grouting pipe; 32: slurry discharge pipe; 4: anchor cable tensioning structure; 41: supporting steel pipe; 42: P-shaped anchor; 43: under-anchor reinforcement mesh; 44: under-anchor spiral reinforcement; 45: steel anchor beam; 46: metal corrugated pipe; 5: one-way hinge assembly; 51: first lug plate; 52: second lug plate; 53: pin shaft; 6: fixing hinge support; 61: welded steel plate; 62: bearing plate; 63: shear-resistant connector; 64: shoe beam; 90: pedestrian landscape bridge; 91: main bridge arch; 911: arch leg.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0049] The present disclosure will be further described in detail below with reference to FIG. 1 to FIG. 10.

[0050] The embodiments of the present disclosure provide a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge. Referring to FIG. 1 and FIG. 2, the three-legged star-shaped pedestrian landscape bridge 90 includes a main bridge arch 91 that includes three arch legs 911 connected into a star shape having three legs. One arch leg 911 is connected to a pedestrian ramp. In this embodiment, the rear-anchored V-shaped pier of the steel structure of the pedestrian landscape bridge 90 is applied to the main bridge arch 91 of the pedestrian landscape bridge 90.

[0051] Referring to FIG. 2 and FIG. 3, the rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge 90 includes a deck-type arch-footed V-shaped pier 1. The deck-type arch-footed V-shaped pier 1 is disposed at a rear end of each arch leg 911. The deck-type arch-footed V-shaped pier 1 has a top connected to the arch leg 911 and a bottom hinged with a pile foundation 2 of a bearing platform pre-poured on a construction ground; and a tie rod 3 is connected between the rear end of the arch leg 911 and the pile foundation 2 of the bearing platform, and an anchor cable tensioning structure 4 configured to tension the tie rod 3 is disposed on the pile foundation 2 of the bearing platform. Due to the anchor cable tensioning structure 4, a tensioning force is applied at rear ends of the three arch legs 911 of the main bridge arch 91, to enable the deck-type arch-footed V-shaped piers 1 of the main bridge arch 91 to rotate, thereby releasing a portion of an axial force in the main bridge arch 91, and converting a portion of the stress on the main bridge arch into the stress on the bridge. This reduces a horizontal thrust of the arch foot of the main bridge arch 91. Therefore, requirements for mounting a large-span bridge arch on a soft soil foundation can be met.

[0052] Referring to FIG. 2 and FIG. 3, the pile foundation 2 of the bearing platform includes a plurality of rock-socketed piles 21 spaced apart along a vertical direction and a reinforced concrete bearing platform 22 poured on tops of the plurality of rock-socketed piles 21. The plurality of rock-socketed piles 21 form a group of foundation piles, and a concrete cushion that is fixed on a soft soil layer is disposed at a bottom side of the pile foundation 2 of the bearing platform. The group of foundation piles that are formed by the plurality of rock-socketed piles 21 spaced apart, and the concrete cushion are suitable for a construction site having a softer soft soil layer. The plurality of rock-socketed piles 21 improve overall stiffness of the pile foundation 2 of the bearing platform.

[0053] Referring to FIG. 3 and FIG. 4, a one-way hinge assembly 5 is disposed at the bottom of the deck-type arch-footed V-shaped pier 1. There are a plurality of groups of one-way hinge assemblies 5 that are spaced apart, there are a plurality of groups of tie rods 3 that are spaced apart, and there are a plurality of groups of anchor cable tensioning structures 4 that correspond to the plurality of groups of tie rods 3. In this embodiment, five groups of one-way hinge assemblies 5 are spaced apart on the deck-type arch-footed V-shaped pier 1, and 16 groups of anchor cable tensioning structures 4 are spaced apart at the rear end of each deck-type arch-footed V-shaped pier 1 (not shown in the figure). Because self-weights of the deck-type arch-footed V-shaped piers 1 and the main bridge arch 91 are large, the tensioning force is applied via the plurality of tie rods 3 and the plurality of groups of anchor cable tensioning structures 4 during cambering. This is conducive to applying the tensioning force on the deck-type arch-footed V-shaped piers 1, so as to drive the deck-type arch-footed V-shaped piers 1 to drive the cambering of the main bridge arch 91 to a design value.

[0054] Referring to FIG. 5, the tie rod 3 includes a pre-stressed steel beam. The anchor cable tensioning structure 4 includes an anchor jack (not shown in the figure), and a supporting steel pipe 41 and a P-shaped anchor 42 that are pre-buried on the pile foundation 2 of the bearing platform. The anchor jack is an anchor jack in the conventional technologies. The supporting steel pipe 41 is sleeved on the pre-stressed steel beam. The anchor jack is mounted on the rear end of the arch leg 911. The pre-stressed steel beam has one end connected to the anchor jack in a tensioned manner and the other end penetrating through an anchor hole of the P-shaped anchor 42 and fixedly buried in the pile foundation 2 of the bearing platform. The P-shaped anchor 42 and the supporting steel pipe 41 need to be positioned and pre-buried before the construction of the pile foundation 2 of the bearing platform, to enable one end of the pre-stressed steel beam to penetrate through the supporting steel pipe 41 and the P-shaped anchor 42 in sequence, and to be buried inside the pile foundation 2 of the bearing platform. One end, connected to the P-shaped anchor 42, of the pre-stressed steel beam is buried inside the pile foundation 2 of the bearing platform, to form a fixing end. The other end, connected to the anchor jack in a tensioned manner, of the pre-stressed steel beam is tensioned, to form a tensioning end.

[0055] Referring to FIG. 5, the anchor cable tensioning structure 4 includes an under-anchor reinforcement mesh 43, an under-anchor spiral reinforcement 44, and a steel anchor beam 45. The under-anchor reinforcement mesh 43 is pre-buried in the pile foundation 2 of the bearing platform, and a bottom of the pre-stressed steel beam penetrates through the under-anchor spiral reinforcement 44 and is sequentially connected to the under-anchor reinforcement mesh 43 and the P-shaped anchor 42. The steel anchor beam 45 is rigidly connected to the arch leg 911. A top of the pre-stressed steel beam is connected to the steel anchor beam 45. The steel anchor beam 45 is used to fix the anchor jack, and the pre-stressed steel beam penetrates through the anchor hole of the steel anchor beam 45, to tension the pre-stressed steel beam via the anchor jack.

[0056] Referring to FIG. 5, the pre-stressed steel beam is connected to a vacuum grouting pipe 31 and a slurry discharge pipe 32. The vacuum grouting pipe 31 has a bottom buried in the pile foundation 2 of the bearing platform and connected to the supporting steel pipe 41 and a top extending outside a top of the pile foundation 2 of the bearing platform. The top of the pre-stressed steel beam is nested in the supporting steel pipe 41. The slurry discharge pipe 32 penetrates through the steel anchor beam 45 and is connected to the supporting steel pipe 41. After being tensioned, the pre-stressed steel beam is fixed by grouting via the vacuum grouting pipe 31 and the supporting steel pipe 41, to facilitate tensioning and cambering operations in an earlier stage. In addition, after cambering of the bridge is completed, the pre-stressed steel beam is fixed on the pile foundation 2 of the bearing platform as a whole. The pre-stressed steel beam is easy to fix by grouting via the vacuum grouting pipe 31 and the slurry discharge pipe 32.

[0057] Referring to FIG. 5, the pre-stressed steel beam is nested in a metal corrugated pipe 46, and two opposite ends of the metal corrugated pipe 46 are detachably connected to two supporting steel pipes 41 respectively. During construction, two opposite ends of the metal corrugated pipe 46 may be sleeved with the supporting steel pipe 41. The metal corrugated pipe 46 may be stretched to provide space for stretching the pre-stressed steel beam. The pre-stressed steel beam forms a tensioning structure in the form of an internal beam via the supporting steel pipes 41 and the metal corrugated pipes 46 at the two ends. Therefore, after the pre-stressed steel beam is tensioned and cambering is completed, the pre-stressed steel beam is fixed on the pile foundation 2 of the bearing platform as a whole. The pre-stressed steel beam is easy to fix by grouting via the vacuum grouting pipe 31 and the slurry discharge pipe 32.

[0058] Referring to FIG. 8 to FIG. 10, a one-way hinge assembly 5 includes a first lug plate 51, a second lug plate 52, and a pin shaft 53. The first lug plate 51 is connected to the bottom of the deck-type arch-footed V-shaped pier 1, the second lug plate 52 is connected to the pile foundation 2 of the bearing platform, and the pin shaft 53 horizontally penetrates through the first lug plate 51 and the second lug plate 52. The first lug plate 51 and the second lug plate 52 are hinged via the pin shaft 53. The one-way hinge structure that is an axis along a horizontal direction is implemented via the first lug plate 51, the second lug plate 52, and the pin shaft 53. The deck-type arch-footed V-shaped pier 1 rotates around the pin shaft 53 as an axis, and is hinged with the pile foundation 2 of the bearing platform via the one-way hinge assembly 5 at the bottom, to facilitate the anchor cable tensioning structure 4 to implement cambering effect of the three arch legs 911 by tensioning the tie rods 3.

[0059] Referring to FIG. 6 and FIG. 7, a fixing hinge support 6 is disposed on the deck-type arch-footed V-shaped pier 1. Five groups of one-way hinge assemblies 5 are mounted in the fixing hinge support 6. A bottom side of the fixing hinge support 6 is connected to a foundation bolt 23 pre-buried in the pile foundation 2 of the bearing platform, a welded steel plate 61 is disposed on a top side of the fixing hinge support 6, and a gap is disposed between the welded steel plate 61 and the deck-type arch-footed V-shaped pier 1. The deck-type arch-footed V-shaped pier 1 has a hinged state and a cemented state. Before and during the cambering of the deck-type arch-footed V-shaped pier 1, the deck-type arch-footed V-shaped pier 1 is hinged with the pile foundation 2 of the bearing platform at the bottom. That is, the deck-type arch-footed V-shaped pier 1 is in the hinged state. After the deck-type arch-footed V-shaped pier 1 drives the main bridge arch 91 to complete cambering, the deck-type arch-footed V-shaped pier 1 needs to be fixed in the cemented state. This is conducive to improving mounting stiffness and solidness of the bridge after the bridge is completed. The fixing hinge support 6 is used to provide protection for the hinged structure of the deck-type arch-footed V-shaped pier 1, and in the later stage, the deck-type arch-footed V-shaped pier 1 is encapsulated and cemented with concrete. The bottom of the deck-type arch-footed V-shaped pier 1 is poured and fixed on the bearing plate 62 by pouring the fixing hinge support 6.

[0060] Referring to FIG. 6 and FIG. 7, the fixing hinge support 6 is connected to a bearing plate 62 and a shear-resistant connector 63 that are pre-buried in the pile foundation 2 of the bearing platform. The shear-resistant connector 63 is mounted on a side, away from the fixing hinge support 6, of the bearing plate 62, and the bearing plate 62 is further connected to a fixing member for fixing the bearing plate 62 to a top of the pile foundation 2 of the bearing platform. The shear-resistant connector 63 may withstand and transmit a longitudinal shearing force between a steel beam and a concrete slab in the pile foundation 2 of the bearing platform, and may further be configured to resist a hoisting action between the bearing plate 62 and the steel beam. Therefore, the shear-resistant connector 63 improves shear-resisting effect of the bearing plate 62 and the pile foundation 2 of the bearing platform while the deck-type arch-footed V-shaped pier 1 rotates. This is conducive to improving mounting strength of the pile foundation 2 of the bearing platform.

[0061] Referring to FIG. 6 and FIG. 7, the bearing plate 62 is provided with a threaded hole, and a plurality of threaded holes are spaced apart along the periphery of the bearing plate 62. The fixing member includes a shoe beam 64 fixed to an outer side wall of the fixing hinge support 6. There are a plurality of foundation bolts 23, and the plurality of foundation bolts 23 correspond one by one to the plurality of threaded holes. The shoe beam 64 is fixed to the bearing plate 62, and the foundation bolts 23 penetrate through the shoe beam 64 and are connected to the bearing plate 62 via the threaded holes in a threaded manner. The foundation bolt 23 is used to fix the bearing plate 62 to the top of the pile foundation 2 of the bearing platform. The bearing plate 62 improves bearing strength of the pile foundation 2 of the bearing platform when the deck-type arch-footed V-shaped pier 1 rotates. The plurality of foundation bolts 23 improve the solid effect of the connection between the bearing plate 62 and the shoe beam 64 and the connection of the bearing plate 62 and the pile foundation 2 of the bearing platform. This is conducive to enhancing mounting strength of the deck-type arch-footed V-shaped pier 1.

[0062] An implementation principle of the rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge provided in the embodiment of the present disclosure is as follows: The tie rods 3 are tensioned at the same time via the anchor cable tensioning structure 4 via and the trifurcated structure. The tie rods 3 drive the rear end of the arch leg 911 to rotate at the hinged part of the deck-type arch-footed V-shaped piers 1, to enable the other end of the arch leg to camber, thereby completing the cambering of the main bridge arch 91. After the tie rods 3 are tensioned to the design value, the cambering of the main bridge arch 91 is completed. After the cambering is completed, the three arch legs 911 are rigidly connected, to complete the construction of the steel structure of the three-legged star-shaped pedestrian landscape bridge 90. Due to the hinged bridge structure of the deck-type arch-footed V-shaped pier 1, the tensioning force is applied at rear ends of the three arch legs 911 of the main bridge arch 91, to enable the deck-type arch-footed V-shaped piers 1 of the main bridge arch 91 to rotate, thereby releasing a portion of an axial force in the main bridge arch 91, and converting a portion of the stress on the main bridge arch into the stress on the bridge. This reduces a horizontal thrust of the arch foot of the main bridge arch 91. Therefore, requirements for mounting a large-span bridge arch on a soft soil foundation can be met.

[0063] In another embodiment, a method for constructing a rear-anchored V-shaped pier of a steel structure of a three-legged star-shaped pedestrian landscape bridge is provided. The method includes: [0064] S1: Erect temporary trestle bridges along extension directions of the three arch legs 911 of the main bridge arch 91, excavate pits at arch feet of the three arch legs 911 of the main bridge arch 91, and pour pile foundations 2 of bearing platforms. [0065] S2: Mount the deck-type arch-footed V-shaped pier 1 at the arch feet of the three arch legs 911 of the main bridge arch 91, to form a hinged structure between the bottom of the deck-type arch-footed V-shaped pier 1 and the pile foundation 2 of the bearing platform; and mount, at the rear end of the arch leg 911, the tie rod 3 and the anchor cable tensioning structure 4 for tensioning the tie rod 3, to enable the top of the deck-type arch-footed V-shaped pier 1 to rotate vertically. [0066] S3: Hoist and splice, on the temporary trestle bridge, segments of the main bridge arch 91, to enable the three arch legs 911 of the main bridge arch 91 to be connected into the three-legged star-shaped pedestrian landscape bridge 90. [0067] S4: Remove the temporary trestle bridge. [0068] S5: Activate the anchor cable tensioning structure 4 to tension the tie rod 3 to a design value, to enable the deck-type arch-footed V-shaped pier 1 to rotate relative to the pile foundation 2 of the bearing platform, and complete cambering and rigid connection of the three arch legs 911. [0069] S6: Convert the deck-type arch-footed V-shaped pier 1 into a fixedly connected structure, encapsulate and cement the deck-type arch-footed V-shaped pier 1 and the pile foundation of the bearing platform with concrete, and backfill the pit.

[0070] In this embodiment of the present disclosure, cambering is performed via the deck-type arch-footed V-shaped pier 1 and the anchor cable tensioning structure 4, the construction steps of the mounting structure of the main bridge arch 91 are reasonably arranged, and hinge mounting and fixedly mounting of the deck-type arch-footed V-shaped pier 1 may be switched. Therefore, the deck-type arch-footed V-shaped piers 1 of the main bridge arch 91 may rotate during cambering, thereby releasing a portion of an axial force in the main bridge arch 91, and converting a portion of the stress on the main bridge arch into the stress on the bridge. This reduces a horizontal thrust of the arch foot of the main bridge arch 91. After cambering is completed, the deck-type arch-footed V-shaped pier 1 is fixedly mounted on the pile foundation 2 of the bearing platform, to meet the requirements for mounting the large-span bridge arch on a soft soil foundation and mount the large-span bridge arch. Mounting stability in large-span bridge construction is improved by actively adjusting an equilibrium state of the structure of the main bridge arch 91. The above are preferred embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present disclosure shall fall within the protection scope of the present disclosure.