Corrugated steel cylinder shielding pipe

Abstract

The invention relates to a corrugated steel cylinder shielding pipe, and belongs to the technical field of building construction, the corrugated steel cylinder shielding pipe comprises a pipe body, the pipe body comprises a corrugated steel cylinder arranged on the outer layer, a template cylinder arranged on the inner layer, and a steel reinforcement framework and a connecting piece arranged between the corrugated steel cylinder and the template cylinder; the connecting piece is used for limiting the steel reinforcement framework and the formwork cylinder at the same time, one end of the connecting piece is welded to the corrugated steel cylinder, the other end of the connecting piece can be welded to the formwork cylinder, and the length of the connecting piece can be adjusted to be matched with the distance between the corrugated steel cylinder and the formwork cylinder. The corrugated steel cylinder, the steel reinforcement framework and the formwork cylinder can be pre-connected into a whole through the connecting pieces, when concrete is poured, the inner steel reinforcement framework can be prevented from shaking, it is guaranteed that the corrugated steel cylinder, the steel reinforcement framework, the formwork cylinder and the concrete pipe are coaxially arranged, and the yield of pipe body forming is increased.

Description

Technical Field

[0001] The present application relates to the technical field of building construction, and in particular to a corrugated steel tube shielding pipe. Background Art

[0002] At present, general power pipelines are mainly used for laying power cables in tunnels, drainage pipes, integrated pipe corridor power cabins, working wells, or a combination of the four types. Commonly used power pipelines include ordinary reinforced concrete pipes, galvanized round steel pipes or galvanized corrugated steel pipes and steel cylinder concrete pipes, etc. Among them, the interior of ordinary reinforced concrete pipes only uses steel skeletons, the shielding body is discontinuous, and the electromagnetic shielding effect is limited. Galvanized round steel pipes or galvanized corrugated steel pipes can meet the requirements of electromagnetic shielding, but because the diameter cannot be too large and the wall thickness of the steel pipe is small, open excavation construction is required, which directly affects ground traffic. In addition, galvanizing is a polluting industry that causes great damage to the environment. Its fireproof performance is poor, it is easy to corrode, and the cost is high. Steel cylinder concrete pipes can meet the requirements of electromagnetic shielding, but the pipeline uses a large amount of steel, the pipe body is heavy, the length of each pipe section is short, and the socket connection is adopted. There are many joints and two sealing rings. The sealing test is relatively complicated, and uneven settlement is prone to leakage.

[0003] In order to solve the above problems, a corrugated steel frame shielding tube is launched on the market, which includes a corrugated steel cylinder and a steel frame. The corrugated steel cylinder and the steel frame are cast by inner and outer layers of concrete. However, the existing corrugated steel cylinder and the steel frame are independently movable before casting. There is no connecting parts and no contact between the corrugated steel cylinder and the steel frame, which causes the steel frame to easily rotate or shake and deviate during casting, thereby reducing casting efficiency, reducing the yield rate, and the structure of the shielding tube after molding changes and the strength is reduced. Summary of the invention

[0004] An embodiment of the present application provides a corrugated steel tube shielding tube to solve the problem in the related art that the existing corrugated steel tube and the steel frame move independently before casting, and there are no connectors and no contact between the corrugated steel tube and the steel frame, which causes the steel frame to easily rotate or shake and deviate during casting, thereby reducing casting efficiency, reducing the yield rate, and causing the shielding tube structure to change after molding and reduce its strength.

[0005] The present application provides a corrugated steel tube shielding pipe, comprising:

[0006] A pipe body, the pipe body comprising a corrugated steel cylinder arranged on the outer layer, a template cylinder arranged on the inner layer, and a steel reinforcement skeleton arranged between the corrugated steel cylinder and the template cylinder;

[0007] A connecting piece is used to simultaneously limit the steel bar skeleton and the formwork cylinder. One end of the connecting piece is welded to the corrugated steel cylinder, and the other end can be welded to the formwork cylinder. The length of the connecting piece can be adjusted to adapt to the distance between the corrugated steel cylinder and the formwork cylinder.

[0008] In some embodiments, the connecting member is M-shaped.

[0009] In some embodiments, the connecting member includes a first vertical rod, a second vertical rod, a first diagonal rod, and a second diagonal rod;

[0010] One end of the first vertical rod is connected to the first oblique rod, and one end of the second vertical rod is connected to one end of the second oblique rod;

[0011] One end of the first oblique rod away from the first vertical rod is connected to one end of the second oblique rod away from the second vertical rod.

[0012] In some embodiments, one end of the first vertical rod away from the first oblique rod is bent in a direction away from the first oblique rod;

[0013] One end of the second vertical rod away from the second oblique rod is bent in a direction away from the first oblique rod;

[0014] The bent ends of the first vertical rod and the second vertical rod can both fit with the inner wall of the corrugated steel cylinder.

[0015] In some embodiments, the first vertical rod and the second vertical rod are both three-section structures;

[0016] The first vertical rod includes a connecting section and two extension sections arranged on both sides of the connecting section.

[0017] In some embodiments, threaded posts are provided at both ends of the connecting section;

[0018] A threaded hole is formed at one end of the extension section close to the connecting section.

[0019] In some embodiments, the thread directions of the threaded columns at both ends of the connecting section are opposite.

[0020] In some embodiments, the corrugated steel cylinder is made of corrugated steel plates using spiral welding.

[0021] In some embodiments, the corrugations of the corrugated steel cylinder are rectangular.

[0022] In some embodiments, the steel reinforcement skeleton includes longitudinal steel bars and circumferential steel bars.

[0023] The beneficial effects of the technical solution provided by this application include:

[0024] The corrugated steel tube, steel bar skeleton and formwork tube can be pre-connected into a whole through the connecting parts. When pouring concrete, the internal steel bar skeleton can be prevented from shaking, ensuring that the corrugated steel tube, steel bar skeleton and formwork tube are coaxially arranged with the concrete tube, thereby improving the yield rate of tube body forming. When the steel bar skeleton moves along the length direction of the axis, the annular steel bars will touch the connecting parts to form a limit and cannot move. When the steel bar skeleton rotates, it will also be unable to rotate due to the limit between the connecting parts and the longitudinal steel bars. By welding the connecting parts to the corrugated steel tube and the formwork tube, the distance between the connecting parts and the corrugated steel tube and the formwork tube is fixed, thereby avoiding the displacement between the connecting parts and the corrugated steel tube and the formwork tube, resulting in the inability to be coaxial.

[0025] The extendable connector can avoid gaps after the connector is placed, which would make welding impossible. It can also avoid the need to hold the connector in hand all the time when welding the connector, thereby improving welding efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A three-dimensional schematic diagram provided for an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the main view provided for an embodiment of the present application;

[0029] Figure 3 An enlarged schematic diagram provided for an embodiment of the present application;

[0030] Figure 4 A schematic diagram of the structure of the connector provided in the embodiment of the present application;

[0031] Figure 5 A cross-sectional schematic diagram of a connecting member provided in an embodiment of the present application.

[0032] Figure 6 This is an exploded view of the first vertical rod provided in the embodiment of the present application.

[0033] 1. Corrugated steel tube; 2. Steel bar skeleton; 21. Longitudinal steel bars; 22. Circumferential steel bars; 3. Connectors; 31. First vertical bar; 312. Threaded hole; 311. Extension section; 313. Threaded column; 314. Connecting section; 32. Second vertical bar; 33. First diagonal bar; 34. Second diagonal bar; 4. Formwork tube. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0035] The embodiment of the present application provides a corrugated steel tube shielding tube, which can solve the problem that the existing corrugated steel tube and the steel skeleton are independent of each other before casting, there are no connectors and no contact between the corrugated steel tube and the steel skeleton, which causes the steel skeleton to easily rotate or shake and deviate during casting, thereby reducing casting efficiency, reducing the yield rate, and the structural change of the shielding tube after molding, resulting in reduced strength.

[0036] See also Figure 1-6 As shown, the embodiment of the present application provides a corrugated steel tube shielding pipe, comprising:

[0037] The pipe body includes a corrugated steel cylinder 1 arranged on the outer layer, a template cylinder 4 arranged on the inner layer and a steel frame 2 arranged between the corrugated steel cylinder 1 and the template cylinder 4. The corrugated steel cylinder 1 can be preferably 304 stainless steel. Compared with ordinary alloy steel, it has strong plasticity and corrosion resistance, and is non-magnetic. It can create a non-magnetic environment and has excellent electromagnetic shielding effect. The corrugated steel cylinder 1 can be used as an outer mold for pouring concrete, and the mold can be removed without removal.

[0038] Concrete is poured between the corrugated steel tube 1 and the formwork tube 4, and the corrugated steel tube 1, the steel skeleton 2 and the formwork tube 4 are integrated by the concrete.

[0039] Connector 3 is used to simultaneously limit the steel bar skeleton 2 and the formwork tube 4. One end of the connector 3 is welded to the corrugated steel tube 1, and the other end can be welded to the formwork tube 4. The length of the connector 3 can be adjusted to adapt to the distance between the corrugated steel tube 1 and the formwork tube 4.

[0040] The corrugated steel tube 1, the steel skeleton 2 and the formwork tube 4 are pre-connected into a whole through the connecting piece 3. When pouring concrete, the internal steel skeleton 2 can be prevented from shaking, ensuring that the corrugated steel tube 1, the steel skeleton 2 and the formwork tube 4 are coaxially arranged with the concrete pipe.

[0041] In some optional embodiments, see Figure 1-6As shown, in the corrugated steel tube shielding tube, the connecting member 3 is M-shaped, and the connecting member 3 includes a first vertical rod 31, a second vertical rod 32, a first diagonal rod 33 and a second diagonal rod 34. One end of the first vertical rod 31 is connected to the first diagonal rod 33, one end of the second vertical rod 32 is connected to one end of the second diagonal rod 34, and one end of the first diagonal rod 33 away from the first vertical rod 31 is connected to one end of the second diagonal rod 34 away from the second vertical rod 32.

[0042] In this embodiment, the end of the first vertical rod 31 away from the first diagonal rod 33 is bent in a direction away from the first diagonal rod 33, and the end of the second vertical rod 32 away from the second diagonal rod 34 is bent in a direction away from the first diagonal rod 33. The bent ends of the first vertical rod 31 and the second vertical rod 32 can both fit into the inner wall of the corrugated steel cylinder 1.

[0043] When installing the connecting piece 3, first make the connecting piece 3 parallel to the corrugated steel cylinder 1, and put it into the space between the corrugated steel cylinder 1 and the steel frame 2 from one end of the corrugated steel cylinder 1, and locate it at the port of the corrugated steel cylinder 1. After the connecting piece 3 enters the space between the corrugated steel cylinder 1 and the steel frame 2, and makes the connecting piece 3 located below the longitudinal steel bar 21, the connecting piece 3 is gradually rotated until it is perpendicular to the corrugated steel cylinder 1. During the rotation of the connecting piece 3, the M-shaped connecting piece 3 will make the ends of the first vertical rod 31, the second vertical rod 32, the first oblique rod 33 and the second oblique rod 34 connected to each other face the steel frame 2, and the end portion composed of the first vertical rod 31 and the first oblique rod 33 and the end portion composed of the second vertical rod 32 and the second oblique rod 34 will gradually rotate and be inserted into the gap between two adjacent circumferential steel bars 22 until the connecting piece 3 is vertically erected. At this time, the V-shaped notch composed of the first oblique rod 33 and the second oblique rod 34 in the connecting piece 3 will also abut against the longitudinal steel bar 21.

[0044] Then the longitudinal steel bar 21 is welded to the first diagonal bar 33 and the second diagonal bar 34, and the bent ends of the first vertical bar 31 and the second vertical bar 32 will fit on the inner wall of the corrugated steel cylinder 1, and then the bent ends of the first vertical bar 31 and the second vertical bar 32 are welded and fixed to the inner wall of the corrugated steel cylinder 1, and finally the end portion composed of the first vertical bar 31 and the first diagonal bar 33 and the end portion composed of the second vertical bar 32 and the second diagonal bar 34 will also abut against the inner wall of the template cylinder 4, and then the end portion composed of the first vertical bar 31 and the first diagonal bar 33 and the second vertical bar 32 and the second diagonal bar 34 are welded to the template cylinder 4.

[0045] That is, when the steel skeleton 2 moves along the length direction of the axis, the annular steel bars 22 will touch the connecting piece 3 to form a limit and cannot move. When the steel skeleton 2 rotates, it will also be unable to rotate due to the limit between the connecting piece 3 and the longitudinal steel bars 21. By welding the connecting piece 3 to the corrugated steel cylinder 1 and the template cylinder 4, the distance between the connecting piece 3 and the corrugated steel cylinder 1 and the template cylinder 4 is fixed, which can avoid the offset between the connecting piece 3 and the corrugated steel cylinder 1 and the template cylinder 4, resulting in the inability to be coaxial.

[0046] There may be several connecting members 3, and a connecting member 3 may be provided at the position of each longitudinal reinforcement 21 to avoid different spacings between different directions.

[0047] In some optional embodiments, see Figure 1-5 As shown, in the corrugated steel tube shielding tube, the first vertical rod 31 and the second vertical rod 32 are both three-section structures, and the first vertical rod 31 includes a connecting section 314 and two extension sections 311 arranged on both sides of the connecting section 314 .

[0048] In this embodiment, threaded columns 313 are disposed at both ends of the connecting section 314 , and a threaded hole 312 is formed at one end of the extending section 311 close to the connecting section 314 .

[0049] In this embodiment, the thread directions of the threaded columns 313 at both ends of the connecting section 314 are opposite.

[0050] When the corrugated steel cylinder 1, the steel bar skeleton 2 and the formwork cylinder 4 are coaxially placed, and the connecting piece 3 is placed between the corrugated steel cylinder 1 and the steel bar skeleton 2 and erected vertically, there will still be a gap between the connecting piece 3 and the corrugated steel cylinder 1 and the formwork cylinder 4, and it cannot be completely stuck between the corrugated steel cylinder 1 and the formwork cylinder 4. By rotating the connecting section 314, the connecting section 314 drives the two extension sections 311 to extend outward until they are tightly pressed between the corrugated steel cylinder 1 and the formwork cylinder 4, so that they can be completely fitted with the corrugated steel cylinder 1 and the formwork cylinder 4, and then welded and fixed.

[0051] When the corrugated steel cylinder 1, the steel frame 2 and the formwork cylinder 4 are coaxially placed, the connecting piece 3 is placed between the corrugated steel cylinder 1 and the steel frame 2 and erected vertically, the connecting piece 3 can be welded to the corrugated steel cylinder 1 first, and then the two extension sections 311 are extended by rotating the connecting section 314 until the V-shaped opening formed by the first diagonal rod 33 and the second diagonal rod 34 abuts against the longitudinal steel bar 21, and the connecting piece 3 also abuts against the formwork cylinder 4, so as to avoid the connecting piece 3 being insufficient in length after being erected vertically, resulting in the inability to contact welding, and the length can be adapted by the retractable connecting piece 3.

[0052] When the corrugated steel cylinder 1, the steel skeleton 2 and the formwork cylinder 4 are coaxially placed, the connecting piece 3 is placed between the corrugated steel cylinder 1 and the steel skeleton 2 and erected vertically, the connecting piece 3 and the steel skeleton 2 can be welded first, and then the two extension sections 311 are extended by rotating the connecting section 314 until the connecting piece 3 abuts between the corrugated steel cylinder 1 and the formwork cylinder 4, so as to avoid the connecting piece 3 being insufficient in length after being erected vertically, resulting in the inability to contact welding, and the length can be adapted by the retractable connecting piece 3.

[0053] The extendable connecting piece 3 can avoid the gap after the connecting piece 3 is inserted, which makes welding impossible, and also avoids the need to hold the welding hand all the time when welding the connecting piece 3, thereby improving the welding efficiency and accuracy.

[0054] In some optional embodiments, see Figure 1 As shown, in the corrugated steel cylinder shielding tube, the corrugated steel cylinder 1 is made of corrugated steel plate by spiral welding. Steel cylinders of different diameters can be produced by spiral welding of strip steel of the same width. Rigidity is increased by internal and external spiral welds, so that the straightness of the corrugated steel cylinder 1 can be improved.

[0055] In some optional embodiments, see Figure 1 As shown, in the corrugated steel tube shielding tube, the corrugations of the corrugated steel tube 1 are rectangular, and the rectangular corrugations have a certain out-of-plane stiffness. A thinner corrugated plate can be used to obtain a higher bearing capacity, giving full play to the role of the corrugated steel tube 1 while reducing the amount of steel bars used.

[0056] In some optional embodiments, see Figure 1-3 As shown, in the corrugated steel tube shielding tube, the steel bar skeleton 2 includes a plurality of longitudinal steel bars 21 and a plurality of annular steel bars 22. The plurality of annular steel bars 22 are coaxially arranged, and the plurality of longitudinal steel bars 21 are evenly arranged in the circumferential direction of the annular steel bars 22 and parallel to the axial direction of the annular steel bars 22. Each longitudinal steel bar 21 is welded and fixed to the annular steel bars 22. The annular steel bars 22 provide radial support for the pipe body, and the longitudinal steel bars 21 provide axial support for the pipe body. The longitudinal steel bars 21 fix and connect a plurality of annular steel bars 22 to ensure that the gaps between the annular steel bars 22 are uniform, so that the steel bar skeleton 2 evenly disperses the force acting on the pipe body, balances the force on the pipe body, and improves its service life.

[0057] Working principle and working process of this application:

[0058] When installing the connecting piece 3, first make the connecting piece 3 parallel to the corrugated steel cylinder 1, and put it into the space between the corrugated steel cylinder 1 and the steel frame 2 from one end of the corrugated steel cylinder 1, and locate it at the port of the corrugated steel cylinder 1. After the connecting piece 3 enters the space between the corrugated steel cylinder 1 and the steel frame 2, and makes the connecting piece 3 located below the longitudinal steel bar 21, the connecting piece 3 is gradually rotated until it is perpendicular to the corrugated steel cylinder 1. During the rotation of the connecting piece 3, the M-shaped connecting piece 3 will make the ends of the first vertical rod 31, the second vertical rod 32, the first oblique rod 33 and the second oblique rod 34 connected to each other face the steel frame 2, and the end portion composed of the first vertical rod 31 and the first oblique rod 33 and the end portion composed of the second vertical rod 32 and the second oblique rod 34 will gradually rotate and be inserted into the gap between two adjacent circumferential steel bars 22 until the connecting piece 3 is vertically erected. At this time, the V-shaped notch composed of the first oblique rod 33 and the second oblique rod 34 in the connecting piece 3 will also abut against the longitudinal steel bar 21.

[0059] Then the longitudinal steel bar 21 is welded to the first diagonal bar 33 and the second diagonal bar 34, and the bent ends of the first vertical bar 31 and the second vertical bar 32 will fit on the inner wall of the corrugated steel cylinder 1, and then the bent ends of the first vertical bar 31 and the second vertical bar 32 are welded and fixed to the inner wall of the corrugated steel cylinder 1, and finally the end portion composed of the first vertical bar 31 and the first diagonal bar 33 and the end portion composed of the second vertical bar 32 and the second diagonal bar 34 will also abut against the inner wall of the template cylinder 4, and then the end portion composed of the first vertical bar 31 and the first diagonal bar 33 and the second vertical bar 32 and the second diagonal bar 34 are welded to the template cylinder 4.

[0060] That is, when the steel skeleton 2 moves along the length direction of the axis, the annular steel bars 22 will touch the connecting piece 3 to form a limit and cannot move. When the steel skeleton 2 rotates, it will also be unable to rotate due to the limit between the connecting piece 3 and the longitudinal steel bars 21. The distance between the connecting piece 3 and the corrugated steel cylinder 1 and the template cylinder 4 is fixed by welding between the connecting piece 3 and the corrugated steel cylinder 1 and the template cylinder 4, which can avoid the deviation between the connecting piece 3 and the corrugated steel cylinder 1 and the template cylinder 4 and cause the coaxiality to fail.

[0061] When the corrugated steel cylinder 1, the steel bar skeleton 2 and the formwork cylinder 4 are coaxially placed, and the connecting piece 3 is placed between the corrugated steel cylinder 1 and the steel bar skeleton 2 and erected vertically, there will still be a gap between the connecting piece 3 and the corrugated steel cylinder 1 and the formwork cylinder 4, and it cannot be completely stuck between the corrugated steel cylinder 1 and the formwork cylinder 4. By rotating the connecting section 314, the connecting section 314 drives the two extension sections 311 to extend outward until they are tightly pressed between the corrugated steel cylinder 1 and the formwork cylinder 4, so that they can be completely fitted with the corrugated steel cylinder 1 and the formwork cylinder 4, and then welded and fixed.

[0062] When the corrugated steel cylinder 1, the steel frame 2 and the formwork cylinder 4 are coaxially placed, the connecting piece 3 is placed between the corrugated steel cylinder 1 and the steel frame 2 and erected vertically, the connecting piece 3 can be welded to the corrugated steel cylinder 1 first, and then the two extension sections 311 are extended by rotating the connecting section 314 until the V-shaped opening formed by the first diagonal rod 33 and the second diagonal rod 34 abuts against the longitudinal steel bar 21, and the connecting piece 3 also abuts against the formwork cylinder 4, so as to avoid the connecting piece 3 being insufficient in length after being erected vertically, resulting in the inability to contact welding, and the length can be adapted by the retractable connecting piece 3.

[0063] When the corrugated steel cylinder 1, the steel skeleton 2 and the formwork cylinder 4 are coaxially placed, the connecting piece 3 is placed between the corrugated steel cylinder 1 and the steel skeleton 2 and erected vertically, the connecting piece 3 and the steel skeleton 2 can be welded first, and then the two extension sections 311 are extended by rotating the connecting section 314 until the connecting piece 3 abuts between the corrugated steel cylinder 1 and the formwork cylinder 4, so as to avoid the connecting piece 3 being insufficient in length after being erected vertically, resulting in the inability to contact welding, and the length can be adapted by the retractable connecting piece 3.

[0064] The extendable connecting piece 3 can avoid the gap after the connecting piece 3 is inserted, which makes welding impossible, and also avoids the need for hand-held welding when welding the connecting piece 3, thereby improving welding efficiency and accuracy.

[0065] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0066] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0067] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A corrugated steel tube shielding pipe, characterized in that: include: A pipe body, the pipe body comprising a corrugated steel cylinder (1) arranged on the outer layer, a template cylinder (4) arranged on the inner layer, and a steel frame (2) arranged between the corrugated steel cylinder (1) and the template cylinder (4); A connecting piece (3) is used to simultaneously limit the position of the steel bar skeleton (2) and the template cylinder (4); one end of the connecting piece (3) is welded to the corrugated steel cylinder (1), and the other end can be welded to the template cylinder (4); and the length of the connecting piece (3) can be adjusted to adapt to the distance between the corrugated steel cylinder (1) and the template cylinder (4).

2. The corrugated steel tube shielding pipe according to claim 1, characterized in that: The connecting piece (3) is M-shaped.

3. The corrugated steel tube shielding pipe according to claim 2, characterized in that: The connecting member (3) comprises a first vertical rod (31), a second vertical rod (32), a first diagonal rod (33) and a second diagonal rod (34); One end of the first vertical rod (31) is connected to the first oblique rod (33), and one end of the second vertical rod (32) is connected to one end of the second oblique rod (34); One end of the first oblique rod (33) away from the first vertical rod (31) is connected to one end of the second oblique rod (34) away from the second vertical rod (32).

4. The corrugated steel tube shielding pipe according to claim 3, characterized in that: One end of the first vertical rod (31) away from the first oblique rod (33) is bent in a direction away from the first oblique rod (33); One end of the second vertical rod (32) away from the second oblique rod (34) is bent in a direction away from the first oblique rod (33); The bent ends of the first vertical rod (31) and the second vertical rod (32) can both fit into the inner wall of the corrugated steel cylinder (1).

5. The corrugated steel tube shielding pipe according to claim 3, characterized in that: The first vertical rod (31) and the second vertical rod (32) are both three-section structures; The first vertical rod (31) comprises a connecting section (314) and two extension sections (311) arranged on both sides of the connecting section (314).

6. The corrugated steel tube shielding pipe according to claim 5, characterized in that: Both ends of the connecting section (314) are provided with threaded columns (313); A threaded hole (312) is formed at one end of the extension section (311) close to the connection section (314).

7. The corrugated steel tube shielding pipe according to claim 6, characterized in that: The thread directions of the threaded columns (313) at both ends of the connecting section (314) are opposite.

8. The corrugated steel tube shielding pipe according to claim 1, characterized in that: The corrugated steel cylinder (1) is made of corrugated steel plates by spiral welding.

9. The corrugated steel tube shielding pipe according to claim 1, characterized in that: The corrugations of the corrugated steel cylinder (1) are rectangular.

10. The corrugated steel tube shielding pipe according to claim 1, characterized in that: The steel reinforcement skeleton (2) comprises longitudinal steel reinforcements (21) and annular steel reinforcements (22).

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