Formwork supporting device suitable for high-pier multi-arch aqueduct

Abstract

The utility model discloses a formwork supporting device suitable for a high-pier multi-arch aqueduct, which comprises a bailey beam and a plurality of distribution beams, and the number of the distribution beams is determined according to construction requirements. The distribution beams are hinged to the lower portion of the bailey beam at intervals in the left-right direction of the bailey beam. A plurality of stand columns are arranged on the lower portion of each distribution beam at intervals in the front-back direction, and the number of the stand columns is determined according to construction requirements. A truss is horizontally arranged between the left and right adjacent stand columns, and the left end and the right end of the truss are connected with the stand columns through disc buckle assemblies respectively. Compared with the prior art, limitation of a full framing in high-pier aqueduct construction is overcome, through combination of the bailey beams, the distribution beams, the stand columns and the trusses, under the condition that the high-pier aqueduct construction is guaranteed, the supporting function of aqueduct arch rib construction is achieved, the use number of temporary supports is greatly reduced, and the construction efficiency of the formwork is improved.

Description

Technical Field

[0001] The utility model relates to a formwork support device for an aqueduct in a water conservancy project, in particular to a formwork support device suitable for a high-pier multi-arch aqueduct. Background Art

[0002] With the development of national economic construction, reinforced concrete arch aqueduct has become one of the most widely used aqueduct forms in water conservancy projects. The main force-bearing feature of the rib arch aqueduct is that the main arch ring converts the vertical load on the arch into axial pressure and transmits it to the pier as a horizontal thrust, and the bending moment in the arch is small, so its span can reach more than 100 meters. For this reason, before the construction of the arch aqueduct, the construction quality of the arch support system must be guaranteed to ensure the safe construction of the arch rib structure. Conventional aqueduct arch ring construction plans usually use full-height scaffolding for support, but for high-pier continuous arch aqueducts, full-height scaffolding is often inconvenient to use due to reasons such as too high erection height, inconvenient installation and disassembly, and long erection time. Summary of the invention

[0003] The utility model aims to provide a formwork support device suitable for high-pier multi-arch aqueduct, which is easy to disassemble and reuse while ensuring the construction quality of the under-arch support system, thereby reducing construction costs and improving construction efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model is suitable for a formwork support device for a high-pier and multi-arch aqueduct, comprising a Bailey beam and a plurality of distribution beams, the number of which is determined according to construction requirements; the plurality of distribution beams are hingedly arranged at intervals along the left and right directions of the Bailey beam at the lower part of the Bailey beam: a plurality of columns are arranged at intervals along the front and rear directions at the lower part of each distribution beam, the number of which is determined according to construction requirements; a truss is horizontally arranged between the left and right adjacent columns, and the left and right ends of the truss are respectively connected to the columns through a buckle assembly.

[0006] Optionally, the buckle assembly includes a flange, a buckle and a wedge pin; the flange is welded onto the column, a plurality of insertion holes are evenly distributed along the circumferential direction on the upper surface of the flange, and pin holes are vertically correspondingly opened on the upper and lower clamping plates of the buckle, and the buckle is welded to the corresponding end of the truss when in use; the lower end of the wedge pin passes through the pin hole and the insertion hole, thereby realizing the detachable connection of the column and the truss as one.

[0007] Optionally, the upper ends of the columns are detachably connected to the distribution beams via U-shaped components; the U-shaped components include a U-shaped plate with an upper opening structure, a bottom plate of the U-shaped plate is provided with a through hole, the upper ends of the columns pass through the through hole and are welded to the bottom plate of the U-shaped plate, an outer flange is provided at the upper opening of the U-shaped plate, and the outer flange is connected to the distribution beam via bolts, so that disassembly and assembly are convenient.

[0008] Optionally, the column is a steel pipe column, which is composed of a number of segments. Connecting flanges are provided at both ends of each segment. The segments are connected by high-strength bolts through holes on the connecting flanges, thereby reducing the weight of the supporting device while ensuring the supporting strength.

[0009] Compared with the prior art, the utility model overcomes the limitations of full-bridge supports in the construction of high-pier aqueducts, and ensures that the supporting function of the aqueduct arch rib construction is met in the case of high-pier aqueduct construction through the combination of Bailey beams, distribution beams, columns and trusses, thereby greatly reducing the number of temporary supports used and improving the construction efficiency of the formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 yes Figure 1 An enlarged schematic diagram of part I.

[0012] Figure 3 It is a schematic diagram of the connection between the truss of the utility model and the column through the buckle assembly. DETAILED DESCRIPTION

[0013] The utility model is described in detail below in conjunction with the accompanying drawings; it should be noted that in the description of this application, the terms "upper", "lower", "left", "right", front, back, "vertical", "horizontal", "inside", "outside" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. In the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, which can be a fixed connection, a detachable connection, or an integrated connection; it can be directly connected or indirectly connected through an intermediate medium.

[0014] like Figure 1-3 As shown, the formwork support device suitable for high-pier continuous-arch aqueduct described in the utility model comprises a Bailey beam 1 and two distribution beams 2.1, 2.2. The two distribution beams 2 are hingedly arranged at the lower part of the Bailey beam 1 at intervals in the left and right directions along the Bailey beam 1. The hinged manner ensures that the bending moment received by the upper Bailey beam 1 is not transmitted to the distribution beam 2 of the lower layer, and the spacing between the two distribution beams 2 is determined according to the construction requirements; a plurality of columns 3 are arranged at intervals in the front and rear directions at the lower part of each distribution beam 2.1, 2.2, and the number and spacing of the columns 3 are determined according to the construction requirements; a truss 4 is horizontally arranged between the left and right adjacent columns 3, and the left and right ends of the truss 4 are respectively connected to the corresponding columns 3 through a buckle assembly.

[0015] The Bailey beam is assembled from standard Bailey plates, and a single Bailey beam is made up of upper and lower chords, vertical rods and diagonal rods.

[0016] Intentionally or exemplarily, as Figure 3 As shown, the disc buckle assembly includes a flange 5.1, a buckle 5.2 and a wedge pin 5.3; the flange 5.1 is welded on the column 3, and a plurality of insertion holes 5.4 are evenly spaced circumferentially on the upper surface of the flange 5.1, and pin holes 5.5 are vertically correspondingly opened on the upper and lower clamping plates of the buckle 5.2. When in use, the buckle 5.2 is welded to the corresponding end of the truss 4; the lower end of the wedge pin 5.3 passes through the pin hole 5.5 and the insertion hole 5.4, thereby realizing the detachable connection between the column 3 and the truss 4 as a whole, which greatly facilitates the assembly and disassembly of the formwork support device.

[0017] Intentionally or exemplarily, as Figure 2 As shown, the upper ends of the columns 3 are detachably connected to the distribution beam 2 via U-shaped components.

[0018] The U-shaped assembly includes a U-shaped plate 6.1 with an upper opening structure. A through hole is provided on the bottom plate 6.2 of the U-shaped plate 6.1. The upper end of the column 3 passes through the through hole and is welded to the bottom plate 6.2 of the U-shaped plate. An outer flange is provided at the upper opening of the U-shaped plate 6.1. The outer flange is detachably connected to the distribution beam 2 by bolts 6.3, making disassembly and assembly convenient.

[0019] Intentionally or exemplarily, as Figure 3 As shown, column 3 selects a ø630×10mm steel pipe column. According to design requirements, the steel pipe column can be composed of several segments. Connecting flanges are provided at both ends of each segment. High-strength bolts are used to connect the segments through the holes on the connecting flanges. A strip foundation is provided at the bottom of the steel pipe column. Under the premise of ensuring the supporting strength, the weight of the supporting device is reduced.

[0020] When installing the steel pipe column, a car crane and manual assistance are used, and the method of segmented lifting is adopted. The verticality of the steel pipe column must be strictly controlled before it is fixed.

[0021] The working principle and working process of the utility model are briefly described as follows:

[0022] A thicker steel pipe column is set at the bottom of the distribution beam as the main support, and the adjacent steel pipe columns are connected by trusses to enhance the structural stability. A distribution beam is set at the top of the steel pipe column, and a Bailey beam is installed on the distribution beam. The Bailey beam bears the upper load and transfers the load to the lower structure through the distribution beam. Compared with the traditional full-span support, it effectively solves the problem of high pier support, reduces the number of temporary supports, saves the loading and unloading time of temporary supports, and speeds up the construction progress.

Claims

1. A formwork support device suitable for high-pier multi-arch aqueduct, comprising a Bailey beam and a plurality of distribution beams, characterized in that: A plurality of distribution beams are hingedly arranged at intervals along the left and right directions at the lower part of the Bailey beam: a plurality of columns are arranged at intervals along the front and rear directions at the lower part of each distribution beam; a truss is horizontally arranged between the left and right adjacent columns, and the left and right ends of the truss are respectively connected to the columns through buckle assemblies.

2. The formwork support device for high-pier multi-arch aqueduct according to claim 1, characterized in that: The buckle assembly includes a flange, a buckle and a wedge pin; the flange is welded on the column, a plurality of insertion holes are provided on the flange surface at intervals along the circumferential direction, the upper and lower clamping plates of the buckle are correspondingly provided with pin holes, and the lower end of the wedge pin passes through the pin hole and the insertion hole.

3. The formwork support device suitable for high-pier multi-arch aqueduct according to claim 1 or 2, characterized in that: The upper ends of the columns are detachably connected to the distribution beams via U-shaped components; the U-shaped components include a U-shaped plate with an upper opening structure, a through hole is provided on the bottom plate of the U-shaped plate, the upper ends of the columns pass through the through hole and are welded to the bottom plate of the U-shaped plate, an outer flange is provided at the upper opening of the U-shaped plate, and the outer flange is connected to the distribution beam via bolts.

4. The formwork support device suitable for high-pier multi-arch aqueduct according to claim 1 or 2, characterized in that: The column is a steel pipe column, which is composed of a plurality of segments. Both ends of each segment are provided with connecting flanges, and the segments are connected by high-strength bolts through holes on the connecting flanges.

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