Pouring platform suitable for one-time underwater mass concrete bottom sealing

Abstract

The utility model discloses a pouring platform suitable for one-time underwater mass concrete bottom sealing, which is characterized by comprising a bottom sealing center platform in a regular N-polygon shape, the N supporting arms extend outwards from the positions of N corners of the bottom sealing center platform; the bottom sealing walking platforms are connected between every two adjacent supporting arms, and N is a positive integer larger than or equal to 3. The bottom sealing pouring platform has the advantages that the bottom sealing pouring platform is integrally in a regular pentagon shape, stress is even, compared with a linear bottom sealing platform, stress and deformation resistance of the platform and the supporting arms are obviously enhanced, and stress and deformation of one-time underwater mass concrete bottom sealing pouring can be met; and the stability and safety of the bottom sealing platform are ensured. Meanwhile, the concrete bottom sealing platforms are evenly distributed near and in the middle of the well wall, and operation of constructors is facilitated. In addition, enough space is reserved in the middle of the open caisson for arrangement of a large-volume concrete pouring guide pipe at a time.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a pouring platform suitable for one-time underwater large-volume concrete bottom sealing. Background Art

[0002] Caissons are an important means of developing underground space in cities. The larger the size and depth of the caisson, the greater the space utilization rate. However, the larger the size and depth of the caisson, the larger the volume of undrained bottom concrete, and the greater the construction difficulty. The conventional size caisson concrete bottom platform adopts a straight line type. When the size is large, the bearing capacity of the beam is limited and the deflection is large. For super-large caissons, a bottom partition bin is usually used. The volume of concrete poured each time is relatively small, and the requirements for the pouring platform are not high. The pouring platform of a one-time underwater large-volume concrete bottom is subjected to greater and more complex forces. For this reason, a super-large caisson concrete pouring platform device with a one-time underwater large-volume concrete bottom is a problem that needs to be solved at present. Utility Model Content

[0003] The purpose of the utility model is to provide a casting platform suitable for one-time underwater large-volume concrete bottom sealing in accordance with the above-mentioned deficiencies in the prior art. The bottom sealing casting platform is made into a regular pentagon as a whole, and the force is evenly distributed. Compared with the I-shaped bottom sealing platform, the force and deformation resistance of the platform and the support arm are significantly enhanced, which meets the force and deformation requirements of one-time underwater large-volume concrete bottom sealing casting and ensures the stability and safety of the bottom sealing platform.

[0004] The purpose of this utility model is achieved by the following technical solutions:

[0005] A pouring platform suitable for one-time underwater large-volume concrete bottom sealing, comprising:

[0006] A center platform of the bottom cover in the shape of a regular N-gon;

[0007] N support arms extending outward from the N corners of the bottom cover central platform; and

[0008] N bottom-covering walking platforms are connected between every two adjacent support arms, wherein

[0009] N is a positive integer greater than or equal to 3.

[0010] Optionally, N is a positive integer of 5, the bottom cover central platform has a regular pentagonal structure, the number of the support arms is 5, and the number of the bottom cover walking platforms is 5.

[0011] Optionally, the bottom cover central platform includes 5 connecting plates, and each connecting plate is connected to the remaining 4 connecting plates via a square tube, so that the 5 outer square tubes form a pentagonal structure, and the 5 inner square tubes form a pentagonal structure.

[0012] Optionally, each of the connecting plates is connected to a corresponding support arm, one end of the support arm away from the bottom cover central platform is connected to the inner wall of the top ring beam, and five support arms are supported and connected to the top of the caisson prefabricated pipe segment.

[0013] Optionally, upper surfaces of the bottom cover walking platform and the bottom cover central platform are both paved with steel meshes, and an operating space is provided between the bottom cover walking platform and the bottom cover central platform.

[0014] Optionally, the support arm is obliquely connected to a cable device installed on the top ring beam through a steel wire rope at a distance of 1 / 3 from the bottom cover central platform.

[0015] Optionally, it also includes a protective railing installed on the bottom cover walking platform.

[0016] Optionally, two ends of the bottom-covering walking platform are close to the inner wall of the top ring beam.

[0017] Optionally, the bottom cover central platform is located in the middle of the top ring beam.

[0018] The advantages of the utility model are:

[0019] The bottom sealing platform is a regular pentagon with uniform force. Compared with the straight bottom sealing platform, the platform and the support arm have significantly enhanced force and deformation resistance, which can meet the force and deformation of the one-time underwater large-volume concrete bottom sealing casting and ensure the stability and safety of the bottom sealing platform. At the same time, the concrete bottom sealing platform is evenly distributed near and in the middle of the well wall, which is convenient for construction workers to operate. In addition, there is enough space in the middle of the caisson to arrange the one-time underwater large-volume concrete casting conduit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the bottom sealing pouring platform of the utility model;

[0021] Figure 2 This is a structural schematic diagram of the bottom cover central platform of the utility model;

[0022] Figure 3 It is a cross-sectional view of the bottom casting platform and the caisson of the utility model. DETAILED DESCRIPTION

[0023] The marks in the figure are: 1. Bottom center platform, 2. Support arm, 3. Bottom walking platform, 4. Top ring beam, 5. Caisson prefabricated pipe segment, 6. Wire rope, 7. Cable equipment, 8. Guardrail, 9. Operating space, 11. Connecting plate, 12. Square tube, 31. Connecting arm, 32. Steel mesh.

[0024] Example: See Figure 1 As shown, an embodiment of a casting platform suitable for one-time large-volume concrete bottom sealing is shown, which includes a bottom sealing center platform 1 in the form of a regular N-sided polygon; N support arms 2 extending outward from the N corners of the bottom sealing center platform 1; and N bottom sealing walking platforms 3 connected between every two adjacent support arms 2, wherein N is a positive integer greater than or equal to 3.

[0025] In this embodiment, N is a positive integer of 5, that is, the bottom cover central platform 1 is a regular pentagonal structure, the number of support arms 2 is 5, and the number of bottom cover walking platforms 3 is 5. Of course, in other embodiments, N can be other numbers, for example, when N is 3, the bottom cover central platform 1 is a stable triangular structure; when N is 4, the bottom cover central platform 1 is a rectangular structure; when N is 6, the bottom cover central platform 1 can be a regular hexagonal structure, and so on, which will not be repeated here.

[0026] In this embodiment, Figure 2 As shown, the bottom cover central platform 1 includes 5 connecting plates 11, and each connecting plate 11 is connected to the other 4 connecting plates 11 through a square tube 12, so that the 5 outer square tubes 12 form a pentagonal structure, and the 5 inner square tubes 12 form a pentagonal structure.

[0027] In this embodiment, each connecting plate 11 is connected to a corresponding support arm 2, and one end of the support arm 2 away from the bottom cover central platform 1 is connected to the inner wall of the top ring beam 4, and the five support arms 2 are supported and connected to the top of the caisson prefabricated pipe segment 5. The upper surfaces of the bottom cover walking platform 3 and the bottom cover central platform 1 are paved with steel mesh 32, and the bottom cover walking platform 3 includes a pair of parallel connecting arms 31, and the steel mesh 32 is laid on the connecting arms 31. The square tube 12 of the bottom cover central platform 1 is paved with steel mesh, and there is an operating space 9 between the bottom cover walking platform 3 and the bottom cover central platform 1.

[0028] In this embodiment, Figure 3 As shown, the support arm 2 is obliquely connected to the cable device 7 installed on the top ring beam 4 through the steel wire rope 6 at a distance of 11 / 3 from the bottom cover center platform. It also includes a guardrail 8 installed on the bottom cover walking platform 3. The two ends of the bottom cover walking platform 8 are close to the inner wall of the top ring beam 4. The bottom cover center platform 1 is in the middle position of the top ring beam 4.

[0029] The characteristics and functions of the present invention can be further understood through the following description.

[0030] The traditional size of the caisson concrete bottom platform is in the form of a straight line, which cannot meet the load-bearing capacity and deformation of the large-volume concrete bottom. When pouring a large-volume concrete bottom underwater at one time, the platform is subjected to large forces and has high deformation requirements. In order to solve this problem, the present embodiment provides a casting platform that can meet the requirements of a large-volume underwater bottom. Its structure includes a bottom center platform 1, 5 support arms 2 arranged on the bottom center platform 1, and connecting arms 31 and walkway platforms (i.e., steel meshes 32) are arranged on both sides of the support arms 2 for construction personnel to walk around. The support arm 2 is connected to the embedded steel plate of the caisson segment through an embedded steel plate. At the same time, a steel wire rope 6 is used to pull the 1 / 3 span of the support arm 2 obliquely to divide the force on the bottom casting platform into three equal parts in the direction of the shaft diameter.

[0031] In summary, the bottom sealing pouring platform of the utility model is a regular pentagon as a whole, and is evenly stressed. Compared with the I-shaped bottom sealing platform, the stress and deformation resistance of the platform and the support arm are significantly enhanced, which meets the stress and deformation during the one-time underwater large-volume concrete bottom sealing pouring, and ensures the stability and safety of the bottom sealing platform. At the same time, the concrete bottom sealing platform is evenly distributed near and in the middle of the well wall, which is convenient for construction personnel to operate. In addition, there is enough space in the middle of the caisson for the arrangement of the one-time underwater large-volume concrete bottom sealing pouring conduit.

[0032] The above are only preferred embodiments of the present invention, and do not limit the implementation mode and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A pouring platform suitable for one-time underwater large-volume concrete bottom sealing, characterized in that: include: A center platform of the bottom cover in the shape of a regular N-gon; N support arms extending outward from N corners of the bottom cover central platform; as well as N bottom-covering walking platforms are connected between every two adjacent support arms, wherein N is a positive integer greater than or equal to 3.

2. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 1 is characterized in that: N is a positive integer of 5, the bottom cover central platform is a regular pentagonal structure, the number of the support arms is 5, and the number of the bottom cover walking platforms is 5.

3. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 2 is characterized in that: The bottom cover central platform includes 5 connecting plates, each of which is connected to the other 4 connecting plates via a square tube, so that the 5 outer square tubes form a pentagonal structure and the 5 inner square tubes form a pentagonal structure.

4. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 3 is characterized in that: Each of the connecting plates is connected to a corresponding support arm, one end of the support arm away from the bottom cover central platform is connected to the inner wall of the top ring beam, and the five support arms are supported and connected to the top of the caisson prefabricated pipe segment.

5. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 4 is characterized in that: The upper surfaces of the bottom cover walking platform and the bottom cover central platform are both paved with steel meshes, and an operating space is provided between the bottom cover walking platform and the bottom cover central platform.

6. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 5 is characterized in that: The support arm is obliquely connected to a cable device installed on the top ring beam through a steel wire rope at a distance of 1 / 3 from the bottom cover central platform.

7. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 5 is characterized in that: It also includes a protective railing installed on the bottom cover walking platform.

8. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 5 is characterized in that: The two ends of the bottom-covering walking platform are close to the inner wall of the top ring beam.

9. The pouring platform suitable for one-time underwater large-volume concrete bottom sealing according to claim 5, characterized in that: The bottom cover central platform is located in the middle of the top ring beam.

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