Supporting device for arch bridge construction

Abstract

The application discloses an arch bridge construction supporting device, and belongs to the technical field of arch bridge supporting, which comprises an arch wall plate assembly, a supporting rod assembly and a stress rod assembly, the stress rod assembly is arranged on the arch wall plate assembly, and the supporting rod assembly is arranged on the stress rod assembly; the arch wall plate assembly comprises an arch bottom vertical plate and an arch-shaped plate, the arch-shaped plate is arranged between the symmetrically arranged arch bottom vertical plates; the arch wall plate is spliced by the arch bottom vertical plate and the arch-shaped plate through a lap plate and a lap groove, the wall plate is attached to the inner and outer walls of the bridge arch to prevent sliding, and can cover different bridge arch lengths; the supporting rod is adjustable in length and is automatically locked, and is convenient to disassemble; the stress rod comprises a top wall supporting rod with an adjustable span, and forms a closed-loop force transmission system. The device can flexibly increase or decrease the number of supporting rods to adapt to the load, the assembly can be disassembled without damage and can be reused, the supporting stability and adaptability are improved, and the problems of the existing device, such as complicated disassembly, low reuse rate and difficulty in adapting to the load, are solved.

Description

Technical Field

[0001] This invention belongs to the field of arch bridge support technology, specifically referring to a support device for arch bridge construction. Background Technology

[0002] During the construction of arch bridges, in order to ensure the structural stability of core processes such as arch ring pouring and assembly, and to prevent the semi-finished arch from deforming, shifting or even collapsing due to its own weight and construction loads (such as the stacking of building materials and the operation of personnel and equipment), it is necessary to use special support devices to achieve temporary fixation and load bearing. The adaptability, stability and ease of disassembly and assembly of such support devices directly determine the construction efficiency, structural safety and cost control effect, and are key auxiliary equipment in arch bridge construction.

[0003] Existing support systems generally suffer from cumbersome assembly and disassembly processes and low component reuse rates. Most connectors require individual disassembly, and some components are unusable due to deformation or corrosion. Furthermore, the number of support rods is fixed, making it impossible to flexibly increase or decrease them according to load changes at different construction stages, easily leading to insufficient support or material waste. In summary, the shortcomings of existing support systems in terms of adaptability, stability, assembly and disassembly efficiency, and load adaptability make it difficult to meet the demands of modern arch bridge construction for "high efficiency, safety, and economy." Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a support device for arch bridge construction, which effectively solves the above problems.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a support device for arch bridge construction, including an arch wall panel assembly, a support rod assembly and a force-bearing rod assembly. The force-bearing rod assembly is disposed on the arch wall panel assembly, and the support rod assembly is disposed on the force-bearing rod assembly. The arch wall panel assembly includes an arch bottom plate and an arch plate, and the arch plate is disposed between symmetrically arranged arch bottom plates.

[0006] Furthermore, an outer wall panel and a side wall panel are respectively provided on both sides of the arch bottom upright plate. An overlapping plate is provided on the top of the arch bottom upright plate, and an overlapping groove is provided on the top of the other symmetrical arch bottom upright plate. Bolt holes are provided in the center of the overlapping plate and the overlapping groove. Anchoring holes are provided at the bottom of the outer wall panel and the side wall panel. A force-bearing rod bushing is provided on the side wall panel.

[0007] Furthermore, the arched plate is provided with an outer wall plate and a side wall plate on both sides, and the side wall of the side wall plate is symmetrically provided with support rod holes. The arched plate is provided with an overlapping plate and an overlapping groove at both ends, and the center of the overlapping plate and the overlapping groove is provided with a positioning hole.

[0008] Preferably, the outer wall panel one and the side wall panel one of the arch bottom upright plate are respectively attached to the outer wall of the bridge arch and the inner wall of the arc, and the outer wall panel two and the side wall panel two of the arch plate are in the same way, so as to achieve two-way attachment between the inside and outside and prevent slippage during support; the cylindrical surface of the top wall support rod is tangent to the outer circular surface of the side wall panel two, and is attached to the inner wall of the bridge arch to transmit the supporting force and avoid local pressure damage.

[0009] Furthermore, at the connection between the arched plate and the arch bottom plate, the first overlapping plate is located in the second overlapping groove, or the second overlapping plate is located in the first overlapping groove, and the bolt holes coincide with the positioning holes. At the connection between the two arched plates, the second overlapping plate is located in the second overlapping groove, and the two positioning holes coincide.

[0010] Preferably, the arch bottom plate and the arch plate are connected by overlapping plates and overlapping grooves. One overlapping plate is embedded in the second overlapping groove, and the second overlapping plate is embedded in the first overlapping groove. The bolt holes and positioning holes are aligned and fixed. Multiple arch plates can be spliced ​​sequentially along the edge of the arch bridge to cover the edge of the bridge arch of different lengths.

[0011] Furthermore, the support rod assembly includes a support rod and a support screw. The support screw is disposed on the support rod. The cross-sectional dimension of the front half of the support rod is half the dimension of the rear half. A screw channel is provided on the rear half of the support rod. An adjustment groove is provided at the front end of the screw channel. The support screw is disposed in the screw channel. A top plate is provided at the front end of the support screw.

[0012] Furthermore, the front end of the support rod is provided with a limiting buckle, the side wall of the limiting buckle is provided with a buckle groove, the rear end of the support rod is provided with a force-bearing rod groove, the rear side of the force-bearing rod groove is provided with a limiting component groove, and the side wall of the limiting component groove is provided with a side plate sliding groove.

[0013] Furthermore, the support rod assembly also includes an adjusting screw sleeve and a limiting member. The adjusting screw sleeve is disposed in the adjusting groove and is threadedly connected to the support screw. The limiting member is disposed in the limiting member groove.

[0014] Preferably, the two support rods are connected by a limiting buckle, and the total length can be adjusted by pulling according to the spacing of the force-bearing rods. The extension of the support screw can be finely adjusted by adjusting the screw sleeve to adapt to the support requirements of force-bearing points of different heights and spacings. When disassembling the support rods, it is only necessary to pull the two rods to their maximum length and align the limiting buckle with the shackle slot to disengage them.

[0015] Furthermore, the limiting component is provided with a reset spring, a wedge, and a hand-controlled side plate. The reset spring is located on the rear side of the wedge, the hand-controlled side plate is located on the side wall of the wedge, the inclined side of the wedge is located at the entrance of the force rod groove, the end of the reset spring is located on the inner wall of the limiting component groove, and the hand-controlled side plate slides in the side plate groove.

[0016] Preferably, the force-bearing rod slot of the support rod is automatically locked by the wedge and the return spring. The force-bearing rod can enter the slot by pressing the inclined surface of the wedge, and the wedge will automatically spring back and close without manual locking. When disassembling, simply push the hand control side plate to pull the wedge into the limiting part slot to remove the support rod.

[0017] Furthermore, the force-bearing rod assembly includes a top wall support rod and an extension bushing. The top wall support rod has extension threaded posts at both ends. One end of the extension threaded post is located in the support rod hole, and the other end of the extension threaded post is connected to another extension threaded post through the extension bushing. The extension bushing and the extension threaded post are connected by threads.

[0018] Preferably, the top wall support rod is threadedly connected to the extension bushing via an extension threaded post. The total length of the two top wall support rods can be flexibly adjusted by rotating the extension bushing to adapt to the inner wall support requirements of arch bridges with different spans. The force rod and the force rod bushing are connected by a slot, and the force rod bushing is threadedly connected to the extension bushing. There is no destructive operation during disassembly, and the components can be reused.

[0019] Furthermore, the force-bearing rod assembly also includes a force-bearing rod and a connecting plate. The force-bearing rods are respectively disposed on the connecting plate and the arch bottom upright plate. The two ends of the force-bearing rods are disposed on one end of the connecting plate, and the other end of the connecting plate is disposed on the top wall support rod. The two ends of the other force-bearing rods are respectively disposed in the force-bearing rod bushings, and the force-bearing rod slots are disposed on the force-bearing rods.

[0020] Preferably, the load-bearing rod assembly forms a closed-loop force system consisting of top wall support rods, connecting plates, load-bearing rods, and arch bottom uprights. The top wall support rods support the inner wall, and the load-bearing rods connect the connecting plates and the arch bottom uprights, distributing the load to the anchoring end at the arch bottom. The support rod assembly obliquely connects the upper and lower load-bearing rods, further distributing the vertical and horizontal loads. Furthermore, the number of support rod assemblies can be flexibly increased or decreased according to the actual load of the arch bridge, such as the weight of building materials piled up during construction. More support rods are provided for larger loads to avoid over-support or under-support.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows:

[0022] 1. The outer wall panel one and side wall panel one of the arch bottom upright plate are respectively attached to the outer wall of the bridge arch and the inner wall of the arc. The outer wall panel two and side wall panel two of the arch plate are in the same way, so as to achieve two-way attachment between the inside and outside and prevent slippage during support. The cylindrical surface of the top wall support rod is tangent to the outer circular surface of the side wall panel two, and it is attached to the inner wall of the bridge arch to transmit the supporting force and avoid local pressure damage.

[0023] 2. The arch bottom plate and the arch plate are connected by overlapping plates and overlapping grooves. Overlap plate one is embedded in overlapping groove two, and overlapping plate two is embedded in overlapping groove one. The bolt holes and positioning holes are aligned and fixed. Multiple arch plates can be spliced ​​sequentially along the edge of the arch bridge to cover the edge of the bridge arch of different lengths.

[0024] 3. The two support rods are connected by limit buckles and the total length can be adjusted according to the spacing of the load-bearing rods. The extension of the support screw can be finely adjusted by adjusting the screw sleeve to adapt to the support requirements of load-bearing points of different heights and spacings. When disassembling the support rods, simply pull the two rods to their maximum length and align the limit buckles with the shackle slots to disengage them.

[0025] 4. The support rod's force-bearing rod slot is automatically locked by a wedge and a return spring. The force-bearing rod can enter the slot by pressing the wedge's inclined surface, and the wedge will automatically spring back and close, without the need for manual locking. When disassembling, simply push the hand control side plate to pull the wedge into the limiting part slot, and the support rod can be removed.

[0026] 5. The top wall support rod is connected to the extension bushing by an extension threaded post. The total length of the two top wall support rods can be flexibly adjusted by rotating the extension bushing to adapt to the support requirements of the inner wall of arch bridges with different spans. The force rod and the force rod bushing are connected by a slot, and the extension bushing is connected by a thread. There is no destructive operation during disassembly, and the components can be reused.

[0027] 6. The load-bearing rod assembly forms a closed-loop load-bearing system consisting of the top wall support rod, connecting plate, load-bearing rod, and arch bottom vertical plate. The top wall support rod supports the inner wall, and the load-bearing rod connects the connecting plate and the arch bottom vertical plate, distributing the load to the anchoring end of the arch bottom. The support rod assembly obliquely connects the upper and lower load-bearing rods to further distribute the vertical and horizontal loads. Furthermore, the number of support rod assemblies can be flexibly increased or decreased according to the actual load of the arch bridge, such as the weight of building materials piled up during construction. More support rods are provided for larger loads to avoid over-support or under-support. Attached Figure Description

[0028] Figure 1 This is a perspective view of a support device for arch bridge construction proposed in this invention;

[0029] Figure 2 This is a front view of a support device for arch bridge construction proposed in this invention;

[0030] Figure 3 for Figure 2 A cross-sectional view along section line AA;

[0031] Figure 4 for Figure 3 A cross-sectional view along the cutting line BB;

[0032] Figure 5 for Figure 3 A cross-sectional view along the section line CC;

[0033] Figure 6 This is a schematic diagram of the arch bottom support plate of a support device for arch bridge construction proposed in this invention;

[0034] Figure 7This is a schematic diagram of the structure of the arch plate of the support device for arch bridge construction proposed in this invention;

[0035] Figure 8 This is a schematic diagram of the structure of a support rod for a support device for arch bridge construction proposed in this invention;

[0036] Figure 9 This is a schematic diagram of the structure of a limiting component of a support device for arch bridge construction proposed in this invention;

[0037] Figure 10 for Figure 4 A magnified view of a section at point I.

[0038] Among them, 1. Arch wall panel assembly, 11. Arch bottom upright plate, 111. Outer wall panel one, 112. Side wall panel one, 113. Overlap plate one, 1131. Bolt hole, 114. Anchor hole, 115. Force rod bushing, 116. Overlap groove one, 12. Arch plate, 121. Outer wall panel two, 122. Side wall panel two, 1221. Support rod hole, 123. Overlap plate two, 124. Overlap groove two, 125. Positioning hole, 2. Support rod assembly, 21. Support rod, 211 1. Limiting buckle; 212. Shackle groove; 213. Adjustment groove; 214. Screw hole; 215. Force rod groove; 216. Limiting component groove; 217. Side plate slide groove; 22. Support screw; 221. Top plate; 23. Adjusting screw sleeve; 24. Limiting component; 241. Return spring; 242. Wedge; 243. Hand-controlled side plate; 3. Force rod assembly; 31. Top wall support rod; 311. Extension threaded column; 32. Extension bushing; 33. Force rod; 34. Connecting plate.

[0039] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0040] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0042] like Figures 1-10 As shown, the present invention proposes a support device for arch bridge construction, including an arch wall panel assembly 1, a support rod assembly 2 and a force-bearing rod assembly 3. The force-bearing rod assembly 3 is disposed on the arch wall panel assembly 1, and the support rod assembly 2 is disposed on the force-bearing rod assembly 3. The arch wall panel assembly 1 includes an arch bottom upright plate 11 and an arch plate 12, with the arch plate 12 disposed between the symmetrically arranged arch bottom upright plates 11.

[0043] The arch bottom plate 11 has an outer wall plate 111 and a side wall plate 112 on both sides respectively. The top of the arch bottom plate 11 has an overlapping plate 113. The top of the other symmetrical arch bottom plate 11 has an overlapping groove 116. The center of the overlapping plate 113 and the overlapping groove 116 has a bolt hole 1131. The bottom of the outer wall plate 111 and the side wall plate 112 has an anchoring hole 114. The side wall plate 112 has a force-bearing rod bushing 115.

[0044] The arched plate 12 has an outer wall plate 121 and a side wall plate 122 on both sides. The side wall of the side wall plate 122 is symmetrically provided with support rod holes 1221. The arched plate 12 has an overlapping plate 123 and an overlapping groove 124 at both ends. The center of the overlapping plate 123 and the overlapping groove 124 is provided with a positioning hole 125.

[0045] At the connection between the arched plate 12 and the arch bottom upright plate 11, the first overlapping plate 113 is located in the second overlapping groove 124, or the second overlapping plate 123 is located in the first overlapping groove 116, and the bolt hole 1131 coincides with the positioning hole 125. At the connection between the two arched plates 12, the second overlapping plate 123 is located in the second overlapping groove 124, and the two positioning holes 125 coincide.

[0046] The support rod assembly 2 includes a support rod 21 and a support screw 22. The support screw 22 is mounted on the support rod 21. The cross-sectional dimension of the first half of the support rod 21 is half that of the second half. A screw channel 214 is provided on the second half of the support rod 21. An adjustment groove 213 is provided at the front end of the screw channel 214. The support screw 22 is located inside the screw channel 214. A top plate 221 is provided at the front end of the support screw 22.

[0047] The front end of the support rod 21 is provided with a limiting buckle 211, the side wall of the limiting buckle 211 is provided with a buckle groove 212, the rear end of the support rod 21 is provided with a force rod groove 215, the rear side of the force rod groove 215 is provided with a limiting component groove 216, and the side wall of the limiting component groove 216 is provided with a side plate sliding groove 217.

[0048] The support rod assembly 2 also includes an adjusting screw sleeve 23 and a limiting member 24. The adjusting screw sleeve 23 is located in the adjusting groove 213 and is connected to the support screw 22 by a thread. The limiting member 24 is located in the limiting member groove 216.

[0049] The limiting member 24 is provided with a return spring 241, a wedge 242 and a hand control side plate 243. The return spring 241 is located on the rear side of the wedge 242, the hand control side plate 243 is located on the side wall of the wedge 242, the inclined side of the wedge 242 is located at the entrance of the force rod groove 215, the end of the return spring 241 is located on the inner wall of the limiting member groove 216, and the hand control side plate 243 slides in the side plate groove 217.

[0050] The force-bearing rod assembly 3 includes a top wall support rod 31 and an extension bushing 32. The top wall support rod 31 has extension threaded posts 311 at both ends. One end of the extension threaded post 311 is located in the support rod hole 1221, and the other end of the extension threaded post 311 is connected to another extension threaded post 311 through the extension bushing 32. The extension bushing 32 and the extension threaded post 311 are connected by threads.

[0051] The force-bearing rod assembly 3 also includes a force-bearing rod 33 and a connecting plate 34. The force-bearing rod 33 is respectively disposed on the connecting plate 34 and the arch bottom upright plate 11. Both ends of the force-bearing rod 33 are disposed on one end of the connecting plate 34, and the other end of the connecting plate 34 is disposed on the top wall support rod 31. The other two ends of the force-bearing rod 33 are respectively disposed in the force-bearing rod bushing 115, and the force-bearing rod slot 215 is disposed on the force-bearing rod 33.

[0052] In practical use, the arch bottom plate 11 is placed at the bottom of the arch bridge, the outer wall plate 111 is attached to the outer wall of the arch, the side wall plate 112 is attached to the inner wall of the arch, the anchor bolt passes through the anchor hole 114 to nail the arch bottom plate 11 to the arch bridge, the arch plates 12 are overlapped and installed sequentially at the edge of the arch and connected to the arch bottom plate 11, the outer wall plate 121 is attached to the outer wall of the arch, the side wall plate 122 is attached to the inner wall of the arch, the anchor bolt passes through the positioning hole 125 to fix the arch plate 12 to the arch bridge. At this time, the arch bottom plate 11 and the arch plate 12 are connected to wrap around the edge of the arch, protecting and supporting the edge of the arch.

[0053] The top wall support rods 31 are installed on the arch plates 12 on both sides of the arch bridge. The top wall support rods 31 are connected to each other by extension bushings 32. At the same time, the connecting plate 34 is installed on the top wall support rods 31 and located between the top wall support rods 31 and the arch plates 12. The bottom of the connecting plate 34 is connected by a force-bearing rod 33, and the force-bearing rod 33 is inserted into the force-bearing rod bushings 115 on the bottom upright plates 11 on both sides of the arch. The cylindrical surface of the top wall support rod 31 is tangent to the outer circular surface of the side wall plate 122, so that the top wall support rod 31 fits against the inner wall of the arch, thus achieving the technical effect of supporting the inner wall of the arch.

[0054] Two support rods 21 are overlapped, and the limiting buckles 211 of the two support rods 21 are fastened to the front end of the other. The force rod slot 215 of one support rod 21 is hung on the force rod 33 on the arch bottom plate 11, and the force rod slot 215 of the other support rod 21 is hung on the force rod 33 on the opposite top connecting plate 34, forming a support rod assembly 2. During the process of the force rod 33 entering the force rod slot 215, the force rod 33 first squeezes the inclined surface of the wedge 242. After the wedge 242 is squeezed, it slides into the limiting groove 216. At the same time, the return spring 241 is compressed until the force rod 33 passes the wedge 242 and completely enters the force rod slot 215. The wedge 242 is subjected to the elastic force of the return spring 241 and closes the force rod slot 215 again. At this time, the force rod 33 will only contact the right angle side of the wedge 242, so it cannot disengage from the force rod slot 215.

[0055] Based on the distance between the force-bearing rods 33, the two support rods 21 can be pulled flexibly until the force-bearing rod slot 215 abuts against the force-bearing rod 33. Then, the adjusting sleeves 23 on the two support rods 21 are turned respectively. The adjusting sleeves 23 drive the support screw 22 to extend from the screw hole 214 until the top plate 221 at the front end of the support screw 22 abuts against the front end of the other support rod 21. At this time, the support rod assembly 2 provides support for the arch plate 12, thereby enabling the arch plate 12 to support the arch bridge. The number of support rod assemblies 2 can be flexibly configured according to the load and span of the arch bridge, thereby stably supporting the arch bridge.

[0056] During the process of the support rods 21 overlapping each other, they press against the inclined surfaces of the limiting buckle 211, causing the limiting buckle 211 to fasten onto the other support rod 21. When disassembly is required, manually push the hand control side plate 243 to pull the wedge 242 into the limiting part groove 216, adjust the distance between the two support rods 21, remove the support rods 21 from the force-bearing rod 33, and then pull the two support rods 21 to their maximum length. At this time, the limiting buckle 211 is exactly located at the shackle groove 212, and the limiting buckle 211 can disengage from each other through the recessed shackle groove 212.

[0057] It should be noted that, in this document, 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 process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

[0059] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A support device for arch bridge construction, characterized in that: It includes an arch wall panel assembly (1), a support rod assembly (2) and a force-bearing rod assembly (3), wherein the force-bearing rod assembly (3) is disposed on the arch wall panel assembly (1) and the support rod assembly (2) is disposed on the force-bearing rod assembly (3); The arch wall panel assembly (1) includes an arch bottom upright plate (11) and an arch plate (12), wherein the arch plate (12) is disposed between the symmetrically arranged arch bottom upright plates (11); The arch bottom plate (11) is provided with an outer wall plate (111) and a side wall plate (112) on both sides respectively, and a force-bearing rod bushing (115) is provided on the side wall plate (112). The support rod assembly (2) includes a support rod (21) and a support screw (22). The support screw (22) is mounted on the support rod (21), and the rear end of the support rod (21) is provided with a force-bearing rod slot (215). The front end of the support rod (21) is provided with a limiting buckle (211), the side wall of the limiting buckle (211) is provided with a buckle groove (212), the rear side of the force rod groove (215) is provided with a limiting component groove (216), and the side wall of the limiting component groove (216) is provided with a side plate sliding groove (217). The support rod assembly (2) further includes an adjusting screw sleeve (23) and a limiting member (24). The adjusting screw sleeve (23) is located in the adjusting groove (213) and is connected to the support screw (22) by a thread. The limiting member (24) is located in the limiting member groove (216). The force-bearing rod assembly (3) includes a top wall support rod (31) and an extension bushing (32). The top wall support rod (31) has extension threaded posts (311) at both ends. One end of the extension threaded post (311) is located in the support rod hole (1221), and the other end of the extension threaded post (311) is connected to another extension threaded post (311) through the extension bushing (32). The extension bushing (32) and the extension threaded post (311) are connected by threads. The force-bearing rod assembly (3) also includes a force-bearing rod (33) and a connecting plate (34). Multiple force-bearing rods (33) are respectively set on the connecting plate (34) and the arch bottom plate (11). The two ends of a portion of the force-bearing rods (33) are set on one end of the connecting plate (34) on both sides, and the other end of the connecting plate (34) is set on the top wall support rod (31). The two ends of the other force-bearing rods (33) are respectively set in the force-bearing rod bushings (115) on both sides. The force-bearing rod slot (215) is set on the force-bearing rod (33).

2. The support device for arch bridge construction according to claim 1, characterized in that: The top of the arch bottom plate (11) is provided with an overlapping plate (113), and the top of the other symmetrical arch bottom plate (11) is provided with an overlapping groove (116). The center of the overlapping plate (113) and the overlapping groove (116) is provided with a bolt hole (1131), and the bottom of the outer wall plate (111) and the side wall plate (112) is provided with an anchoring hole (114).

3. The support device for arch bridge construction according to claim 2, characterized in that: The arched plate (12) is provided with an outer wall plate (121) and a side wall plate (122) on both sides respectively. The side wall of the side wall plate (122) is symmetrically provided with support rod holes (1221). The arched plate (12) is provided with an overlapping plate (123) and an overlapping groove (124) at both ends respectively. The center of the overlapping plate (123) and the overlapping groove (124) is provided with a positioning hole (125).

4. The support device for arch bridge construction according to claim 3, characterized in that: At the connection between the arch plate (12) and the arch bottom plate (11), the first overlapping plate (113) is located in the second overlapping groove (124), or the second overlapping plate (123) is located in the first overlapping groove (116), and the bolt hole (1131) coincides with the positioning hole (125). At the connection between the two arch plates (12), the second overlapping plate (123) is located in the second overlapping groove (124), and the two positioning holes (125) coincide.

5. A support device for arch bridge construction according to claim 4, characterized in that: The rear half of the support rod (21) is provided with a screw channel (214), the front end of the screw channel (214) is provided with an adjustment groove (213), the support screw (22) is located in the screw channel (214), and the front end of the support screw (22) is provided with a top plate (221).

6. A support device for arch bridge construction according to claim 5, characterized in that: The limiting member (24) is provided with a return spring (241), a wedge (242) and a hand control side plate (243). The return spring (241) is located on the rear side of the wedge (242), and the hand control side plate (243) is located on the side wall of the wedge (242). The inclined side of the wedge (242) is located at the entrance of the force rod groove (215). The end of the return spring (241) is located on the inner wall of the limiting member groove (216). The hand control side plate (243) is slidably arranged in the side plate groove (217).

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