A multi-section circular caisson scaffolding assembly support platform

Abstract

The present invention provides a multi-section circular caisson scaffolding assembly support platform, which includes a plurality of single-section circular caisson scaffolding assembly platforms that can be detachably assembled together, and the single-section circular caisson scaffolding assembly platform includes a first support assembly unit and a second support assembly unit erected on the first support assembly unit, the first support assembly unit is connected and fixed with the embedded parts of the caisson wall through a supporting workpiece; the first support assembly unit and the second support assembly unit are connected and fixed through a U-shaped fastener; the first support assembly unit includes a pair of main channel steels and a first support assembly connecting piece; the second support assembly unit includes a first arc-shaped channel steel, a second arc-shaped channel steel and a second support assembly connecting piece, and a plurality of second support assembly units are connected and assembled into a circular ring-shaped operating platform frame. The assembled support platform of the present invention is detachable and easy to assemble; it can be recycled and saves materials.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to an assembled support platform for a scaffold in a multi-section circular caisson. Background Art

[0002] A caisson is generally made into a shaft-shaped or rectangular structure on the ground. Then, with the maintenance of the well wall, the soil is continuously excavated from the well, allowing the caisson to gradually sink under its own weight. After reaching the predetermined design elevation, the bottom is sealed and the internal structure is constructed.

[0003] However, during the construction of cast-in-place reinforced concrete caissons, the inner scaffolding and formwork support system are generally dismantled due to the internal soil excavation. Before the construction of the next section of the caisson wall, the internal scaffolding body and support system are re-erected; when the caisson shaft is deep and requires multiple sections of construction, this link will be repeated many times. The use of welded triangular steel supports and on-site assembly of bulk materials not only has a long construction period, but also cannot provide the quality it deserves. In summary, there is still a lot of room for improvement in the existing scaffolding support structure in caissons. Therefore, it is necessary to provide a new type of scaffolding assembly platform for caissons. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a multi-section circular caisson scaffolding assembly support platform, which includes a plurality of single-section circular caisson scaffolding assembly platforms that can be detachably assembled together, the single-section circular caisson scaffolding assembly platform includes a first support assembly unit and a second support assembly unit erected on the first support assembly unit, wherein the first support assembly unit is connected and fixed to the embedded parts of the caisson wall through a supporting workpiece; the first support assembly unit and the second support assembly unit are connected and fixed by U-shaped fasteners; the first support assembly unit includes a pair of main channel steels and a first support assembly connecting piece for connecting and fixing the pair of main channel steels; the second support assembly unit includes a first arc-shaped channel steel, a second arc-shaped channel steel and a second support assembly connecting piece for connecting and fixing the first arc-shaped channel steel and the second arc-shaped channel steel, and a plurality of the second support assembly units are connected and assembled into a circular ring-shaped operating platform frame.

[0005] As an improvement, the annular operating platform frame includes a first circular support and a second circular support connected to each other, and the first circular support and the second circular support are connected and fixed by a plurality of second support assembly connectors.

[0006] As an improvement, the second support assembly unit is a fan ring formed by concentric circles and concentric angles.

[0007] As an improvement, the length of the first arc-shaped channel steel is greater than the length of the second arc-shaped channel steel.

[0008] As an improvement, two adjacent first arc-shaped channel steels are connected and fixed by a first end plate, and the first end plate has a through hole; and / or two adjacent second arc-shaped channel steels are connected and fixed by a second end plate, and the second end plate has a through hole.

[0009] As an improvement, the supporting workpiece and the embedded part are fixed by full-angle welding.

[0010] As an improvement, the supporting workpiece is U-shaped; the main channel steel of the first supporting assembly unit is placed on the supporting workpiece.

[0011] As an improvement, the first support assembly connecting piece includes a plurality of first bolts, first nuts matching the first bolts and a first steel pipe for fitting the first bolts; and / or the first support assembly unit is further provided with a U-shaped component connecting hole.

[0012] As an improvement, the second support assembly unit further comprises a plurality of secondary beams vertically arranged to the first support assembly unit; and / or a circular operating platform is also formed in the central area of ​​the scaffolding assembly platform in the single-section circular caisson.

[0013] As an improvement, the annular operating platform frame is paved with steel plates to form the annular operating platform frame.

[0014] Beneficial effects of the present invention:

[0015] The scaffolding assembly support platform in the multi-section circular caisson of the present invention is detachable and easy to assemble on site, which reduces the workload of on-site operations, saves operation time, and improves work efficiency; the load-bearing structure can be reused for multiple cycles, saving materials; the load-bearing components can be placed sideways without occupying too much on-site space, and civilized on-site construction meets the requirements; the structural system is safe and reliable, ensuring construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the planar structure of the circular caisson shaft of the present invention;

[0017] Figure 2 It is a schematic diagram of the planar structure of a circular caisson shaft of the present invention provided with a circular caisson inner scaffolding assembled support platform;

[0018] Figure 3 It is a schematic plan view of the structure of the circular caisson inner scaffolding assembly support platform of the circular caisson shaft of the present invention from another angle;

[0019] Figure 4 For along Figure 2 Schematic diagram of the structural section cut along the AA line;

[0020] Figure 5 For along Figure 2 Schematic diagram of the structural section cut along the BB line;

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the first supporting assembly unit of the present invention;

[0022] Figure 7 It is a schematic diagram of a three-dimensional structure of two second support assembly units connected and fixed to each other according to the present invention;

[0023] Figure 8 It is a three-dimensional partial structural schematic diagram of the connection and fixing relationship between two adjacent second support assembly unit assemblies of the present invention;

[0024] Fig. 9 It is a schematic cross-sectional view of the local structure of the C portion of the scaffolding assembly support platform in the circular caisson of the present invention;

[0025] Fig.10 It is a schematic diagram of the partial structural cross-section of the D portion of the scaffolding assembly support platform in the circular caisson of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below through specific implementations in combination with the accompanying drawings. The purpose of providing the following specific implementations is to facilitate a clearer and more thorough understanding of the disclosure of the present invention, wherein the left and right directions of the drawings are the horizontal directions, and the up and down directions of the drawings are the vertical directions.

[0027] The present invention proposes a multi-section circular caisson internal scaffolding assembly support platform, which is formed by detachably assembling together a plurality of single-section circular caisson internal scaffolding assembly platforms. The invention is particularly suitable for circular caissons with a relatively deep depth, such as circular multi-section cast-in-place reinforced concrete caissons and similar shaft construction state designs. Figure 1 A schematic diagram of the planar structure of a circular caisson 10 is shown. A single circular caisson 10 will be described below by taking a scaffolding assembly platform in a single-section caisson as an example, wherein the diameter of the circular caisson 10 is 9 m.

[0028] like Figure 2 , Figure 3 and Figure 4As shown, in the present embodiment, an assembled support platform is provided in the shaft wall 8 of the circular caisson 10, and the assembled support platform includes an annular operating platform frame, wherein the annular operating platform frame includes a plurality of first support assembly units 1 and a plurality of second support assembly units 2, the first support assembly unit 2 is used as a main beam (i.e., as a main force transmission component), the first support assembly unit 1 is connected and fixed to an embedded part 3 buried in the inner wall surface of the shaft wall 8 of the caisson through a supporting workpiece 4; the second support assembly unit 2 is used as a secondary beam, and the first support assembly unit 1 and the second support assembly unit 2 are connected and fixed through a U-shaped fastener 5.

[0029] from Figure 2 It can be seen that in this embodiment, six first support assembly units 1 of different lengths are arranged at intervals along the circumference of the circular caisson, in other words, they are evenly arranged along the vertical direction. The arrangement is not limited to this, and the number of first support assembly units 1 can be adjusted according to actual needs. In this embodiment, the first support assembly unit 1 is fixed to the embedded parts 3 in the inner wall surface of the caisson wall 8, and multiple second support assembly units 2 form a circular ring-shaped operating platform frame, which is erected on the six first support assembly units 1, and a steel plate is laid on the circular ring-shaped operating platform frame to form a circular ring-shaped operating platform.

[0030] like Figure 4 , Figure 5 and Figure 6 As shown, the first support assembly unit 1 includes a pair of main channel steels 11 and a first support assembly connector 12 disposed between the pair of main channel steels 11. In this embodiment, the two main channel steels 11 are connected by a plurality of first bolts 121 and a plurality of first nuts 122 matched with the first bolts 121 (in this embodiment, two first bolts 121 and two first nuts 122). The outer surface of each of the plurality of first bolts 121 is covered with a first steel pipe 123 to form the first support assembly connector 12. The first steel pipe 123 can support the first support assembly connector 12 located at The main channel steels 11 on both sides of the steel pipe are connected and fixed so that the two main channel steels 11 and the first supporting assembly connecting piece 12 are pulled and supported, and the first steel pipe 123 is also used to control the spacing between the two main channel steels 11; the main channel steel 11 includes a first web 111 and a first upper flange 112 and a first lower flange 113 located at both ends of the first web 111, and the first upper flange 112 and the first lower flange 113 are both side plates extending horizontally outward from the first web 111; in this embodiment, the first supporting assembly unit 1 is used to support and fix the second supporting assembly unit 2.

[0031] Further, from Figure 2 and Figure 3It can be seen that the annular operating platform frame is formed by connecting and splicing a plurality of second support assembly units 2, and the annular operating platform frame includes a first circular support 21 and a second circular support 22 connected to each other, and the first circular support 21 and the second circular support 22 are connected and fixed by a plurality of second support assembly connectors 27; specifically, in the plane structure, the second support assembly unit 2 is a fan ring formed by two concentric circles and concentric angles, in other words, a part of a section of a ring formed by the first circular support 21 and the second circular support 22 is cut into a fan shape, such as Figure 7 and Figure 8 As shown, the first arc-shaped channel steel 211 and the second arc-shaped channel steel 221 are two concentric circles and two arcs formed by the same central angle, and the above central angle is preferably 33°-90°; the length of the first arc-shaped channel steel 211 is greater than the length of the second arc-shaped channel steel 221; the first circular support 21 is evenly divided into a plurality of first arc-shaped channel steels 211 along its circumference, wherein two adjacent first arc-shaped channel steels 211 are mutually connected and fixed by the first end plate 23 to form the first circular support 21; the second circular support 22 is evenly divided into a plurality of second arc-shaped channel steels 221 along its circumference, wherein two adjacent second arc-shaped channel steels 221 are mutually connected and fixed by the second end plate 24 to form the second circular support 22; in this embodiment, the first circular support 21 is evenly divided along the circular caisson 10 The first arc-shaped channel steel 211 is divided into five sections, and the second circular support 21 is a second arc-shaped channel steel 221 evenly divided into five sections along the circular caisson 10, but it is not limited to this. When the diameter of the circular caisson 10 is smaller than that of the present embodiment, it can also be four sections, and the first support assembly unit 1 can also be two pairs of main beams; when the diameter of the circular caisson 10 is larger than that of the present embodiment, it can also be six sections, seven sections, etc.; in this embodiment, the second support assembly unit 2 also includes two straight secondary beams 25 located in the central area (in other embodiments, the straight secondary beams 25 may not be provided), the straight secondary beams 25 are perpendicular to the first support assembly unit 1, and the straight secondary beams 25 can be used for support; the circle formed by the second circular support 22 can also form a circular operating platform (see specifically Figure 2 and Figure 3 ). In this embodiment, the first circular support 21 and the second circular support 22 form an annular operating platform frame, a steel plate is laid on the annular operating platform frame to form an annular operating platform, and a scaffolding steel pipe is sleeved on the annular operating platform frame, for example, a steel bar scrap is vertically welded on the second support assembly unit 2, and a scaffolding steel pipe is sleeved on the steel bar scrap.

[0032] From an economic point of view, the assembled support platform of the present invention is particularly suitable for circular caissons with a diameter of 7.5m-20m. When the diameter is less than 7.5m, a single beam, primary and secondary beam vertical support form can be directly adopted; when the diameter of the caisson is greater than 20m, other reinforcement measures are required for the main support steel beam.

[0033] To make it clearer, Figure 7 and Figure 8 As shown, the second support assembly unit 2 includes a first arc-shaped channel steel 211, a second arc-shaped channel steel 221 and a second support assembly connecting member 27 for connecting and fixing the first arc-shaped channel steel 211 and the second arc-shaped channel steel 221, wherein the first arc-shaped channel steel 211 and the second arc-shaped channel steel 221 are both secondary channel steels. Since the structures of the first arc-shaped channel steel 211 and the second arc-shaped channel steel 221 are the same, the description of the second arc-shaped channel steel 221 is omitted.

[0034] Specifically, the first arcuate channel steel 211 includes a second web 214, and a second upper flange 215 and a second lower flange 216 located at both ends of the second web 214. Two adjacent first arcuate channel steels 211 are fixed by a first end plate 23. The first end plate 23 is fixed to one end of the first arcuate channel steel 211 by welding or other means. The upper end surface and the lower end surface of the first end plate 23 are respectively fitted with the second upper flange and the second lower flange of the first arcuate channel steel 211. The through hole 26 opened on the first end plate 23 is connected in a detachable manner such as bolt connection to form the first circular support 21; the first arcuate channel steel 211 and the second arcuate channel steel 221 are connected and fixed by a second support assembly connector 27, specifically, by a plurality of second bolts and a plurality of second nuts matched with the second bolts (in this embodiment, two second bolts and two second nuts), and the outer surface of each of the plurality of second bolts is covered with a second steel pipe to form a second support assembly connector 27, see specifically Figure 8 In addition, since the regular length of channel steel is 6m or 12m, the arc-shaped steel beam generally adopts a 6m size, that is, the length of each arc segment is generally ≤6m. The combined weight is within the allowable range of the lifting equipment, which not only meets the on-site installation requirements, but also facilitates assembly and combination.

[0035] In addition, U-shaped fastener connection holes and lifting holes are also provided at the corresponding positions of the first support assembly unit 1. Since the caisson wall is arc-shaped, the angles at which the first support assembly units 1 are connected to the corresponding parts of the caisson wall 8 are different, and the sizes and shapes of the embedded parts 3 and the U-shaped workpieces and other related components will also change. As long as the shapes of the two end faces of the first support assembly unit 1 match the inner wall of the caisson wall, see Figure 2 and Fig.10 .

[0036] from Fig. 9 and Fig.10It can be seen that the first support assembly unit 1 is directly placed on the supporting workpiece 4 without the need for other fixing components, and the supporting workpiece 4 is fixed to the embedded plate of the embedded part 3 in the wall of the caisson; the second support assembly unit 2 is fixedly connected to the first support assembly unit 1 by a U-shaped fastener 5, thereby completing the assembly of the support frame of the scaffolding assembled support platform in a single-section circular caisson.

[0037] It should be noted that the first support assembly unit 1 and the second support assembly unit 2 can be assembled in the factory or at the construction site; the main channel steel and the secondary channel steel are channel steels of different specifications and shapes; preferably, each section of the second support assembly unit 2 is assembled in groups of two, and is hoisted and placed on the first support assembly unit 1 using the hoisting holes, and then the next combination is spliced, which reduces the workload of on-site assembly and ensures the reliability of the connection; the above is only for illustration and cannot be understood as a limitation of the present invention. The number of sections of the scaffolding assembly support platform in the circular caisson can be determined according to the actual depth of the caisson. In addition, a nylon safety net can also be laid in the central area surrounded by the scaffolding assembly support platform in the circular caisson to form a planar whole with the scaffolding assembly support platform in the circular caisson to avoid personnel falling from high altitudes during subsequent work such as erecting scaffolding and formwork support operations, pouring concrete, etc., to ensure the safety of construction operations.

[0038] Compared with the prior art, the multi-section circular caisson scaffolding assembly support platform of the present invention is detachable and easy to assemble on site, which reduces the workload of on-site operations, saves operation time, and improves work efficiency; the load-bearing structure can be reused for multiple cycles, saving materials; the load-bearing components can be placed sideways, do not occupy too much on-site space, and the on-site civilized construction meets the requirements; the structural system is safe and reliable, ensuring construction safety. In addition, the caisson scaffolding assembly support platform of the present invention is widely used, for example, it can be used as an upper scaffolding body, a support system, a construction operation load-bearing structure, and an operation platform.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A multi-section circular caisson scaffolding assembly support platform, characterized in that: It includes a plurality of single-section circular scaffolding assembly platforms for detachably assembling together, wherein the single-section circular scaffolding assembly platform for detachably assembling together includes a first support assembly unit and a second support assembly unit erected on the first support assembly unit, wherein the first support assembly unit is connected and fixed to the embedded parts of the caisson wall through a supporting workpiece; the first support assembly unit and the second support assembly unit are connected and fixed through a U-shaped fastener; the first support assembly unit includes a pair of main channel steels and a first support assembly connector for connecting and fixing the pair of main channel steels; the second support assembly unit includes a first arc-shaped channel steel, a second arc-shaped channel steel and a second support assembly connector for connecting and fixing the first arc-shaped channel steel and the second arc-shaped channel steel, and a plurality of the second support assembly units are connected and assembled into a circular ring-shaped operating platform frame; The first support assembly connector includes a plurality of first bolts, first nuts matched with the first bolts, and a first steel pipe for fitting the first bolts, the first steel pipe supports the main channel steels located on both sides of the steel pipe so that the two main channel steels and the first support assembly connector form a tensioning and bracing connection and fixation, and the first steel pipe is also used to control the spacing between the two main channel steels; The second supporting assembly connecting member comprises a plurality of second bolts and a plurality of second nuts matched with the second bolts, and a second steel pipe is sleeved on the outer surface of each of the plurality of second bolts.

2. The multi-section circular caisson scaffolding assembly support platform according to claim 1 is characterized in that: The annular operating platform frame includes a first circular support and a second circular support that are connected to each other. The first circular support and the second circular support are connected and fixed by a plurality of second support assembly connectors.

3. The multi-section circular caisson scaffolding assembly support platform according to claim 2 is characterized in that: The second support assembly unit is a fan ring formed by concentric circles and concentric angles.

4. The multi-section circular caisson scaffolding assembly support platform according to claim 3 is characterized in that: The length of the first arc-shaped channel steel is greater than the length of the second arc-shaped channel steel.

5. The multi-section circular caisson scaffolding assembly support platform according to claim 2 is characterized in that: Two adjacent first arc-shaped channel steels are connected and fixed by a first end plate, and the first end plate has a through hole; and / or two adjacent second arc-shaped channel steels are connected and fixed by a second end plate, and the second end plate has a through hole.

6. The multi-section circular caisson scaffolding assembly support platform according to claim 1 is characterized in that: The supporting workpiece and the embedded part are fixed by full-angle welding.

7. The multi-section circular caisson scaffolding assembly support platform according to claim 6 is characterized in that: The supporting workpiece is U-shaped; the main channel steel of the first supporting assembly unit is placed on the supporting workpiece.

8. The multi-section circular caisson scaffolding assembly support platform according to claim 1 is characterized in that: The first support assembly unit is also provided with a U-shaped component connection hole.

9. The multi-section circular caisson scaffolding assembly support platform according to claim 1 is characterized in that: The second support assembly unit further comprises a plurality of secondary beams vertically arranged to the first support assembly unit; and / or a circular operating platform is also formed in the central area of ​​the scaffolding assembly platform in the single-section circular caisson.

10. The multi-section circular caisson scaffolding assembly support platform according to claim 2, characterized in that: The annular operating platform frame is paved with steel plates to form the annular operating platform frame.

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