A steel shell protective cover device for the final joint end

Abstract

The present invention is a protective cover device for a steel shell at the final joint end, comprising a protective cover body. The side of the protective cover body facing the jacking segment is provided with a plurality of first horizontal support steel pipes and a plurality of second horizontal support steel pipes. All first horizontal support steel pipes are arranged on the outer wall of the jacking segment end steel shell to form an inverted U-shaped structure. All second horizontal support steel pipes are arranged at the lower end of the inner wall of the jacking segment end steel shell. The side of the protective cover body facing the jacking segment is provided with a plurality of horizontal connecting steel pipes arranged in two layers. A pre-embedded component is provided on the concrete wall of the jacking segment corresponding to each horizontal connecting steel pipe, and the horizontal connecting steel pipe is connected to the corresponding pre-embedded component. The present invention is simple to install, the equipment is sturdy, and it can more effectively protect the steel shell at the jacking segment end.

Description

Technical Field

[0001] The present invention relates to the field of final joint construction of submarine tunnels, and in particular to a steel shell protective cover device for a final joint end. Background Art

[0002] The final joint of the Dalian Bay Subsea Tunnel is constructed using the jacking method. The outer sleeve and jacking segment are prefabricated under dry construction conditions. The jacking segment is pushed into the inner part of the outer sleeve. After the installation of the last section of the immersed tube is completed, the jacking segment is pushed out from the outer sleeve and connected to the last section of the immersed tube.

[0003] The final immersed tube section consists of a double GINA section with GINA waterstops installed at both ends. The final joint section is formed by the end steel shell. Since the final joint is exposed to seawater for a long period of time after prefabrication, the entire end steel shell is directly exposed to the seawater. This can lead to construction vessels accidentally entering the section and damaging the end steel shell's flatness, potentially damaging the end steel shell and preventing it from docking with the final tube section. Therefore, the end steel shell of the final joint needs to be protected. Summary of the Invention

[0004] The present invention aims to solve the deficiencies of the prior art and provides a final joint end steel shell protective cover device.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] A final joint end steel shell protective cover device includes a protective cover body, and a plurality of first horizontal supporting steel pipes and a plurality of second horizontal supporting steel pipes are provided on the side of the protective cover body facing the jacking segment. All the first horizontal supporting steel pipes are arranged on the outer wall surface of the jacking segment end steel shell to form an inverted U-shaped structure, and all the second horizontal supporting steel pipes are arranged at the lower end of the inner wall surface of the jacking segment end steel shell. The side of the protective cover body facing the jacking segment is provided with a plurality of horizontal connecting steel pipes arranged in upper and lower layers, and a pre-embedded component is provided on the concrete wall of the jacking segment corresponding to each horizontal connecting steel pipe, and the horizontal connecting steel pipe is connected to the corresponding pre-embedded component.

[0007] A plurality of inclined connecting steel pipes are provided on the side of the protective cover body facing the jacking section. The inclined connecting steel pipes correspond one-to-one to the horizontal connecting steel pipes in the lower layer and are connected to the corresponding embedded components.

[0008] The embedded components include an anchor plate, and a number of anchor bars are provided on one side of the anchor plate. The anchor plate and anchor bars are embedded in the concrete wall of the jacking segment. An embedded steel pipe is welded on the other side of the anchor plate. The embedded steel pipe passes through the concrete wall of the jacking segment, and the horizontal connecting steel pipe and the inclined connecting steel pipe are connected and fixed to the embedded steel pipe.

[0009] An auxiliary horizontal connecting steel pipe is provided on the top of the inverted U-shaped structure of the first horizontal supporting steel pipe.

[0010] The protective cover body includes an upper horizontal steel pipe bundle and a lower horizontal steel pipe bundle arranged above and below. A left vertical steel pipe bundle is provided between the left sides of the upper horizontal steel pipe bundle and the lower horizontal steel pipe bundle, and a right vertical steel pipe bundle is provided between the right sides of the upper horizontal steel pipe bundle and the lower horizontal steel pipe bundle. Several intermediate vertical steel pipes are distributed between the middle parts of the upper horizontal steel pipe bundle and the lower horizontal steel pipe bundle, and several intermediate horizontal steel pipes are distributed between the left vertical steel pipe bundle and the right vertical steel pipe bundle.

[0011] The protective cover body also includes two X-shaped steel pipe diagonal bracing assemblies arranged on the left and right, and the X-shaped steel pipe diagonal bracing assemblies are connected between the upper horizontal steel pipe bundle and the lower horizontal steel pipe bundle.

[0012] The protective cover body also includes diagonal bracing steel pipes arranged between the upper horizontal steel pipe bundle and the left vertical steel pipe bundle, between the upper horizontal steel pipe bundle and the right vertical steel pipe bundle, between the lower horizontal steel pipe bundle and the left vertical steel pipe bundle, and between the lower horizontal steel pipe bundle and the right vertical steel pipe bundle.

[0013] Adjustable bases are provided between the left vertical steel pipe bundle, the right vertical steel pipe bundle, the bottom of the middle vertical steel pipe and the transverse support beam.

[0014] The beneficial effects of the present invention are: the installation method of the present invention is simple, the equipment is firm, and the steel shell at the end of the jacking segment can be more effectively protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the present invention;

[0016] Figure 2 for Figure 1 Enlarged view of the left part;

[0017] Figure 3 for Figure 1 Enlarged view of the middle part;

[0018] Figure 4 for Figure 1 Enlarged view of the right part;

[0019] Figure 5 A top view of the present invention;

[0020] Figure 6 for Figure 5 Enlarged view of the left part;

[0021] Figure 7 for Figure 5 Enlarged view of the middle part;

[0022] Figure 8 for Figure 5 Enlarged view of the right part;

[0023] Figure 9It is a right side view of the present invention;

[0024] Figure 10 It is a structural diagram of the embedded components in the present invention;

[0025] In the figure: 1-protection cover body; 2-first horizontal support steel pipe; 3-second horizontal support steel pipe; 4-horizontal connecting steel pipe; 5-embedded component; 6-inclined connecting steel pipe; 7-auxiliary horizontal connecting steel pipe; 8-adjustable base; 9-jacking segment end steel shell; 10-jacking segment concrete wall; 11-transverse support beam;

[0026] 101-upper horizontal steel pipe bundle; 102-lower horizontal steel pipe bundle; 103-left vertical steel pipe bundle; 104-right vertical steel pipe bundle; 105-middle vertical steel pipe; 106-middle horizontal steel pipe; 107-X-shaped steel pipe diagonal bracing assembly; 108-diagonal bracing steel pipe;

[0027] 501-anchor plate; 502-anchor bar; 503-embedded steel pipe;

[0028] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in exact proportions. They are only used to facilitate and clearly illustrate the purpose of the embodiments of the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a central component. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The present invention will be further described below with reference to the accompanying drawings and examples:

[0033] A final joint end steel shell protective cover device, such as Figures 1 to 10 As shown, it includes a protective cover body 1, and a plurality of first horizontal supporting steel pipes 2 and a plurality of second horizontal supporting steel pipes 3 are provided on the side of the protective cover body 1 facing the jacking segment. All the first horizontal supporting steel pipes 2 are arranged on the outer wall surface of the steel shell 9 at the end of the jacking segment to form an inverted U-shaped structure, and all the second horizontal supporting steel pipes 3 are arranged at the lower end of the inner wall surface of the steel shell 9 at the end of the jacking segment. The side of the protective cover body 1 facing the jacking segment is provided with a plurality of horizontal connecting steel pipes 4 arranged in two layers, and a pre-embedded component 5 is provided corresponding to each horizontal connecting steel pipe 4 on the concrete wall 10 of the jacking segment, and the horizontal connecting steel pipe 4 is connected to the corresponding pre-embedded component 5.

[0034] A plurality of inclined connecting steel pipes 6 are provided on the side of the protective cover body 1 facing the jacking section. The inclined connecting steel pipes 6 correspond one-to-one to the horizontal connecting steel pipes 4 in the lower layer and are connected to the corresponding embedded components 5 .

[0035] The embedded component 5 includes an anchor plate 501, and a plurality of anchor bars 502 are provided on one side of the anchor plate 501. The anchor plate 501 and the anchor bars 502 are embedded in the jacking segment concrete wall 10. An embedded steel pipe 503 is welded on the other side of the anchor plate 501. The embedded steel pipe 503 passes through the outside of the jacking segment concrete wall 10, and the horizontal connecting steel pipe 4 and the inclined connecting steel pipe 6 are connected and fixed to the embedded steel pipe 503.

[0036] An auxiliary horizontal connecting steel pipe 7 is provided on the top of the inverted U-shaped structure of the first horizontal supporting steel pipe 2 .

[0037] The protective cover body 1 includes an upper horizontal steel tube bundle 101 and a lower horizontal steel tube bundle 102 arranged above and below. A left vertical steel tube bundle 103 is provided between the left sides of the upper horizontal steel tube bundle 101 and the lower horizontal steel tube bundle 102, and a right vertical steel tube bundle 104 is provided between the right sides of the upper horizontal steel tube bundle 101 and the lower horizontal steel tube bundle 102. Several intermediate vertical steel tubes 105 are evenly distributed between the middle parts of the upper horizontal steel tube bundle 101 and the lower horizontal steel tube bundle 102, and several intermediate horizontal steel tubes 106 are evenly distributed between the left vertical steel tube bundle 103 and the right vertical steel tube bundle 104.

[0038] The protective cover body 1 further includes two X-shaped steel pipe diagonal bracing assemblies 107 arranged on the left and right. The X-shaped steel pipe diagonal bracing assemblies 107 are connected between the upper horizontal steel pipe bundle 101 and the lower horizontal steel pipe bundle 102 .

[0039] The protective cover body 1 also includes diagonal bracing steel pipes 108 arranged between the upper horizontal steel pipe bundle 101 and the left vertical steel pipe bundle 103, between the upper horizontal steel pipe bundle 101 and the right vertical steel pipe bundle 104, between the lower horizontal steel pipe bundle 102 and the left vertical steel pipe bundle 103, and between the lower horizontal steel pipe bundle 102 and the right vertical steel pipe bundle 104.

[0040] An adjustable base 8 is provided between the bottoms of the left vertical steel pipe bundle 103 , the right vertical steel pipe bundle 104 , and the middle vertical steel pipe 105 and the transverse support beam 11 .

[0041] The present invention utilizes horizontal connecting steel pipe 4, inclined connecting steel pipe 6 and embedded component 5 to connect the jacking segment with the protective cover body 1, and the protective cover body 1 forms a protective effect on the jacking segment end steel shell 9 of the jacking segment to prevent it from being impacted and damaged by external forces.

[0042] The steel shell 9 at the end of the jacking segment is located on the outermost circle of the pipe segment. The jacking segment is 34m wide and 10m high. There is a steel section with a width of 65cm on the outermost circle, which is the steel shell 9 at the end of the jacking segment. The present invention mainly prevents the steel shell 9 at the end of the jacking segment from being worn by the anchor cables of foreign construction ships during immersion in seawater for 9-10 months. The area of ​​the steel shell 9 at the end of the jacking segment that needs to be protected is large, and it needs to be protected by materials with higher strength. The selected materials need to be of higher strength. According to the needs, a socket-type scaffolding is selected to make the protection device of the steel shell 9 at the end of the jacking segment. The scaffolding is a steel round tube with a smooth surface. The scaffolding is firmly erected and can be reinforced to prevent collapse. The protective cover body 1 is installed from top to bottom, using a disc-type scaffolding for overlap installation. The installation is carried out from top to bottom. An X-shaped steel pipe diagonal brace assembly 107 is overlapped in the middle to prevent tilting. A first horizontal support steel pipe 2 and a second horizontal support steel pipe 3 are added around the jacking segment end steel shell 9 to ensure that the jacking segment end steel shell 9 is completely secure and tightly connected. After the steel pipe overlap is completed, check the pre-tightening to ensure that the steel pipe connection is tight and there is no looseness.

[0043] The present invention has a simple installation method and a firm device, and can more effectively protect the steel shell 9 at the end of the jacking segment.

[0044] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A final joint end steel shell protective cover device, characterized in that: The protective cover body (1) comprises a protective cover body (1), a side of the protective cover body (1) facing the jacking segment is provided with a plurality of first horizontal support steel pipes (2) and a plurality of second horizontal support steel pipes (3), all of the first horizontal support steel pipes (2) are arranged on the outer wall surface of the jacking segment end steel shell (9) to form an inverted U-shaped structure, and all of the second horizontal support steel pipes (3) are arranged at the lower end of the inner wall surface of the jacking segment end steel shell (9), and a side of the protective cover body (1) facing the jacking segment is provided with a plurality of horizontal connecting steel pipes (4) arranged in two layers, and a pre-buried component (5) is provided on the jacking segment concrete wall (10) corresponding to each horizontal connecting steel pipe (4), and the horizontal connecting steel pipe (4) is connected to the corresponding pre-buried component (5); The protective cover body (1) comprises an upper horizontal steel tube bundle (101) and a lower horizontal steel tube bundle (102) arranged in an upper and lower position, a left vertical steel tube bundle (103) is arranged between the left sides of the upper horizontal steel tube bundle (101) and the lower horizontal steel tube bundle (102), and a right vertical steel tube bundle (104) is arranged between the right sides of the upper horizontal steel tube bundle (101) and the lower horizontal steel tube bundle (102), a plurality of intermediate vertical steel tubes (105) are uniformly distributed between the middle parts of the upper horizontal steel tube bundle (101) and the lower horizontal steel tube bundle (102), and a plurality of intermediate horizontal steel tubes (106) are uniformly distributed between the left vertical steel tube bundle (103) and the right vertical steel tube bundle (104); the protective cover body (1) further comprises two X-shaped steel tube diagonal bracing assemblies (107) arranged in a left and a right position, and the X-shaped steel tube diagonal bracing assemblies (107) are connected between the upper horizontal steel tube bundle (101) and the lower horizontal steel tube bundle (102).

2. The final joint end steel shell protective cover device according to claim 1, characterized in that: A plurality of inclined connecting steel pipes (6) are provided on a side of the protective cover body (1) facing the jacking segment. The inclined connecting steel pipes (6) correspond one-to-one to the horizontal connecting steel pipes (4) of the lower layer and are connected to corresponding embedded components (5).

3. The final joint end steel shell protective cover device according to claim 2, characterized in that: The embedded component (5) includes an anchor plate (501), and a plurality of anchor bars (502) are provided on one side of the anchor plate (501). The anchor plate (501) and the anchor bars (502) are embedded in the jacking segment concrete wall (10). An embedded steel pipe (503) is welded to the other side of the anchor plate (501). The embedded steel pipe (503) passes through the outside of the jacking segment concrete wall (10), and the horizontal connecting steel pipe (4) and the inclined connecting steel pipe (6) are connected and fixed to the embedded steel pipe (503).

4. The final joint end steel shell protective cover device according to claim 3, characterized in that: An auxiliary horizontal connecting steel pipe (7) is provided on the top of the inverted U-shaped structure of the first horizontal supporting steel pipe (2).

5. The final joint end steel shell protective cover device according to claim 4, characterized in that: The protective cover body (1) further comprises diagonal bracing steel pipes (108) arranged between the upper horizontal steel pipe bundle (101) and the left vertical steel pipe bundle (103), between the upper horizontal steel pipe bundle (101) and the right vertical steel pipe bundle (104), between the lower horizontal steel pipe bundle (102) and the left vertical steel pipe bundle (103), and between the lower horizontal steel pipe bundle (102) and the right vertical steel pipe bundle (104).

6. The final joint end steel shell protective cover device according to claim 5, characterized in that: An adjustable base (8) is provided between the bottoms of the left vertical steel pipe bundle (103), the right vertical steel pipe bundle (104), and the middle vertical steel pipe (105) and the transverse support beam (11).

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