Simple pontoon for wading cast-in-place arch bridge main arch ring pipeline installation and construction method

Abstract

The invention discloses a simple pontoon for mounting a main arch ring pipeline of a wading cast-in-place arch bridge and a construction method, relates to the technical field of simple pontoon construction, and solves the technical problems that a pontoon possibly shakes due to floating, the angle of a bearing layer directly embedded into the water bottom is inconvenient to adjust, and great potential safety hazards exist. Comprising a pontoon body, and a plurality of kidney-shaped holes are formed in the edge of the pontoon body in the perimeter direction of the pontoon body; the stable insertion structure is mounted in the waist-shaped hole and comprises an extension shaft piece which is obliquely mounted in the waist-shaped hole; the extension length of the extension shaft piece and the angle in the vertical direction can be changed according to the depth of an underwater bearing stratum, the installation stability and safety of the pontoon body are improved, a stable construction platform is provided for wading arch bridge pipeline construction, meanwhile, operation is easy, implementation is easy, an overwater installation work face is more efficiently provided, and the construction efficiency is improved. The labor amount is saved, and the quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of simple floating boat construction, in particular to a simple floating boat for installing pipelines of a main arch ring of a water-forged cast-in-place arch bridge and a construction method. Background Art

[0002] At present, most of the pipelines in urban wading bridges use ships or conventional floating boats to form working platforms, and scaffolding is set up on the working platforms to create conditions for pipeline installation.

[0003] The existing conventional pontoons reduce costs, but the pontoons may shake due to floating, and the angle of the bearing layer directly embedded in the bottom of the water is not easy to adjust, which poses a great safety hazard. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art; to this end, the present invention proposes a simple floating boat and a construction method for installing pipelines of the main arch ring of a water-cast arch bridge.

[0005] A simple floating boat for installing pipelines of main arch ring of a water-cast arch bridge and a construction method thereof, comprising:

[0006] A floating boat body, wherein the edge of the floating boat body is provided with a plurality of waist-shaped holes along the circumference direction thereof;

[0007] A stable plug-in structure is installed inside the waist-shaped hole, and the stable plug-in structure includes an extension shaft installed obliquely in the waist-shaped hole, a shaft cylinder sleeved on the extension shaft, and an adjusting component for adjusting the inclination angle of the extension shaft.

[0008] Preferably, the adjusting member for changing the angle of the shaft cylinder comprises:

[0009] Two fixing rings fixed on the upper surface of the floating boat body and located on both sides of the waist-shaped hole, and a vertical plate is arranged between the fixing ring and the floating boat body;

[0010] A rotating shaft rotatably mounted between the outer surface of the shaft cylinder and the vertical plate;

[0011] The sliding sleeve is an arc-shaped sliding sleeve arranged on the fixing ring.

[0012] Preferably, a fixing plate located inside the fixing ring is fixed on the rotating shaft, the other end of the fixing plate is fixed to the outer surface of the arc-shaped sliding sleeve, and a notch is provided on the inner surface of the arc-shaped sliding sleeve for the vertical plate to pass through.

[0013] Preferably, a limiting bolt for limiting the position of the arc-shaped sliding sleeve is screwed on the surface of the arc-shaped sliding sleeve.

[0014] Preferably, the extension shaft member inserted into the riverbed bearing layer comprises:

[0015] A plurality of plug-in shafts connected end to end, wherein the outer surfaces of the plug-in shafts are provided with external threads that match the shaft barrel;

[0016] A threaded post mounted on the lower end of the splice shaft;

[0017] And a mounting hole is provided on the upper surface of the plug-in shaft.

[0018] Preferably, a limiting shaft for limiting the position of the threaded column inserted into the mounting hole is provided at the upper end of each of the plug-in shafts.

[0019] Preferably, a connecting member is provided between two adjacent floating boat bodies, and the connecting member comprises:

[0020] A mounting ring sleeved on the fixing rings in the two floating boat bodies, wherein the two mounting rings are respectively provided with a first connecting plate and a second connecting plate;

[0021] A plurality of adjustment slots are provided on the upper surface of the first connecting plate;

[0022] And a limit card plate is installed at the other end of the second connecting plate and is engaged with the adjusting card slot.

[0023] Preferably, a fixing column penetrating the first connecting plate is disposed on the surface of the mounting ring, and a limiting ring for limiting the position of the first connecting plate is disposed at the outer end of the fixing column.

[0024] Preferably, the length of the lower end of the limiting clamping plate extending out of the lower surface of the second connecting plate matches the depth of the adjusting slot.

[0025] A construction method for a simple floating boat for installing pipelines of a main arch ring of a wading cast-in-place arch bridge comprises the following steps:

[0026] Step 1: According to the required external dimensions of the floating vessel body, calculate the buoyancy and the thrust of the water body, and determine the number and distribution of stable plug-in structures;

[0027] Step 2: Install shaft cylinders on the pontoon body, install adjustment components between the shaft cylinders and the pontoon body, and adjust the angle of the extension shaft by adjusting the adjustment components;

[0028] Step 3: Open the pontoon to the required working position, starting from the middle of the long side of the pontoon body, extend the length of the extension shaft as required, and extend the length of the extension shaft extending outward into the water to the bearing layer by rotating the extension shaft;

[0029] Step 4: When the lower ends of all the extension shafts have reached the bearing layer, measure the flatness of the floating vessel body and adjust it by rotating the shaft tube and the extension shaft. After the flatness adjustment is completed, stop rotating the extension shaft to form a working surface.

[0030] Step 5: After the safety protection and construction scaffolding are installed on the working surface, the pipeline installation work can be carried out;

[0031] Step 6: After the construction is completed, first remove the scaffolding and safety protection used for construction, and finally release the constraints on the simple floating boat by re-matching the shaft tube with the extension shaft so that the lower end of the extension shaft is separated from the bearing layer.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] (1) The present invention can change the extension length and the vertical angle of the extension shaft according to the depth of the underwater bearing layer, thereby increasing the stability and safety of the installation of the floating vessel body and providing a stable construction platform for the construction of wading arch bridge pipelines. At the same time, the operation is simple and easy to implement, and the water installation work surface is provided more efficiently, thereby saving labor and ensuring quality.

[0034] (2) The present invention designs an extension shaft, the length of which can be adjusted according to the depth of the riverbed bearing layer, to ensure that the extension shaft can be embedded in the bearing layer and adapt to riverbed bearing layers of different depths. The extension shaft can also be easily and quickly assembled and disassembled, thereby increasing the stability of the installation and use of the floating boat body and providing a stable foundation for the construction of wading arch bridge pipelines.

[0035] (3) The present invention can further increase the splicing strength of the two adjacent floating ship bodies after they are spliced ​​by the designed connecting components, thereby forming a larger construction platform, expanding the construction area for the wading arch bridge pipeline, and expanding the construction scope. The two adjacent floating ship bodies are easy to disassemble and assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of a simple floating boat for installing pipelines of the main arch ring of a water-cast arch bridge according to the present invention;

[0037] Figure 2 A cross-sectional view of a simple floating boat for installing pipelines of the main arch ring of a water-cast arch bridge according to the present invention;

[0038] Figure 3 For the present invention Figure 2 A schematic diagram of the structure of the stable plug-in structure;

[0039] Figure 4 For the present invention Figure 3 The structural diagram of the middle regulating component;

[0040] Figure 5 For the present invention Figure 2 Exploded view of the middle extension shaft;

[0041] Figure 6 For the present invention Figure 5 A magnified image of area A;

[0042] Figure 7 For the present invention Figure 1 Structural schematic diagram of the connecting component;

[0043] In the figure: 100, floating boat body; 101, waist-shaped hole; 200, stable plug-in structure; 201, extension shaft; 2011, plug-in shaft; 2012, external thread; 2013, threaded column; 2014, mounting hole; 2015, limit shaft; 202, shaft tube; 203, adjusting member; 2031, fixing ring; 2032, vertical plate; 2033, rotating shaft; 2034, fixing plate; 2035, arc-shaped sliding sleeve; 2036, limit bolt; 300, connecting member; 301, mounting ring; 302, first connecting plate; 303, second connecting plate; 304, limit clamping plate; 305, adjusting slot; 306, fixing column; 307, limit ring. DETAILED DESCRIPTION

[0044] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1

[0046] See also Figure 1 - Figure 4 The present application provides a simple floating boat for installing pipelines of the main arch ring of a wading cast-in-place arch bridge, comprising:

[0047] The floating boat body 100 has a plurality of waist-shaped holes 101 formed along the perimeter of the floating boat body 100 to facilitate the installation of a plurality of stable plug-in structures 200;

[0048] The stable plug-in structure 200 installed inside the waist-shaped hole 101 can change the extension length and the vertical angle of the extension shaft 201 according to the depth of the underwater bearing layer by using the stable plug-in structure 200, thereby increasing the stability and safety of the installation of the floating vessel body 100, and providing a stable construction platform for the construction of wading arch bridge pipelines. At the same time, the operation is simple and easy to implement, and the water installation work surface is provided more efficiently, saving labor and ensuring quality. The stable plug-in structure 200 includes an extension shaft 201 obliquely installed in the waist-shaped hole 101, a shaft tube 202 sleeved on the extension shaft 201, and an adjusting component 203 for adjusting the inclination angle of the extension shaft 201.

[0049] In this embodiment, preferably, the adjusting member 203 for changing the angle of the shaft cylinder 202 includes:

[0050] Two fixing rings 2031 fixed on the upper surface of the floating boat body 100 and located on both sides of the waist-shaped hole 101, and a vertical plate 2032 is provided between the fixing ring 2031 and the floating boat body 100;

[0051] The rotating shaft 2033 installed between the outer surface of the shaft cylinder 202 and the vertical plate 2032 is rotated to change the angle of the shaft cylinder 202, thereby changing the angle of the plug-in shaft 2011 installed in the shaft cylinder 202;

[0052] The arc-shaped sliding sleeve 2035 slidably mounted on the fixing ring 2031 can slide along the fixing ring 2031 as the rotating shaft 2033 rotates.

[0053] In this embodiment, preferably, a fixing plate 2034 located on the inner side of the fixing ring 2031 is fixed on the rotating shaft 2033, and the other end of the fixing plate 2034 is fixed on the outer surface of the arc-shaped sliding sleeve 2035. A notch is provided on the inner surface of the arc-shaped sliding sleeve 2035 for the vertical plate 2032 to pass through, so as to facilitate the sliding of the arc-shaped sliding sleeve 2035 along the fixing ring 2031. The curvature of the fixing ring 2031 is the same as the rotation curvature of the rotating shaft 2033.

[0054] In this embodiment, preferably, a limiting bolt 2036 for limiting the position of the arc-shaped sliding sleeve 2035 is screwed on the surface of the arc-shaped sliding sleeve 2035 , so as to limit the position of the arc-shaped sliding sleeve 2035 and thus limit the angle of the shaft tube 202 .

[0055] In summary, when in use, according to the depth of the floating boat body 100 and the bottom bearing layer, the angle of the shaft cylinder 202 is adjusted, the shaft cylinder 202 and the rotating shaft 2033 are rotated, and the angle between the central axis of the shaft cylinder 202 and the vertical direction is changed. When the rotating shaft 2033 rotates, the fixing plate 2034 and the arc-shaped sliding sleeve 2035 are driven to slide along the fixing ring 2031. When the angle of the shaft cylinder 202 is appropriate, the limit bolt 2036 is rotated to fix the position of the arc-shaped sliding sleeve 2035, thereby adjusting the shaft cylinder 202. The angle is fixed, the angle of the shaft cylinder 202 is appropriate, and then the extension shaft member 201 is installed in the shaft cylinder 202, so that the extension shaft member 201 has a suitable angle with the vertical direction, which is convenient for the extension shaft member 201 to be firmly supported when embedded in the bearing layer. Multiple extension shaft members 201 extend outward at the same time and embed into the underwater bearing layer to maintain stable support and fixation for the floating ship body 100, so that the floating ship body 100 is not easy to shake, providing a stable platform and foundation for the construction of wading arch bridge pipelines, and increasing construction safety and stability.

[0056] Embodiment 2

[0057] Reference Figure 5 and Figure 6 , which is the second embodiment of the present invention.

[0058] In this embodiment, preferably, the length of the extension shaft 201 can be spliced ​​and adjusted according to the depth of the riverbed bearing layer to ensure that the extension shaft 201 can be embedded in the bearing layer, adapt to the riverbed bearing layer of different depths, increase the installation and use stability of the floating ship body 100, and provide a stable foundation for the construction of the wading arch bridge pipeline. The extension shaft 201 inserted into the riverbed bearing layer includes:

[0059] A plurality of plug-in shafts 2011 are connected end to end, and the outer surface of the plug-in shaft 2011 is provided with an external thread 2012 that matches with the shaft tube 202. The length of the external thread 2012 can be set as required, and the external thread 2012 matches with the shaft tube 202, so that the plug-in shaft 2011 can be rotated and moved to extend the length outward;

[0060] The threaded column 2013 is installed at the lower end of the plug-in shaft 2011. The threaded column 2013 is located at the bottom, which is convenient for matching with the mounting hole 2014 on the next plug-in shaft 2011. The threaded column 2013 on the lowermost plug-in shaft 2011 is convenient for embedding into the underwater bearing layer.

[0061] And a mounting hole 2014 is provided on the upper surface of the plug-in shaft 2011 , and an inner surface of the mounting hole 2014 is provided with an internal thread, which is convenient for threaded connection with the threaded column 2013 .

[0062] In this embodiment, preferably, a limiting shaft 2015 for limiting the threaded column 2013 inserted into the mounting hole 2014 is provided at the upper end of each plug-in shaft 2011, and a through hole for the limiting shaft 2015 to be embedded is provided at the upper end of the plug-in shaft 2011, so that the limiting shaft 2015 will not extend out of the outside of the plug-in shaft 2011 and will not affect the cooperation between the plug-in shaft 2011 and the shaft tube 202.

[0063] In summary, when in use, according to the depth of the riverbed bearing layer, first splice a suitable number of plug-in shafts 2011, let the threaded column 2013 of the previous plug-in shaft 2011 be screwed into the mounting hole 2014 of the next plug-in shaft 2011, and then use the limiting shaft 2015 to further limit the threaded column 2013, so that the two plug-in shafts 2011 are not easy to rotate, so as to achieve the stable splicing of the two plug-in shafts 2011, form a longer shaft structure, and then put the upper end of the shaft structure It is located in the shaft tube 202, and the lower end of the shaft structure extends to the underwater bearing layer. If the length is still insufficient, a plug-in shaft 2011 can be connected from the upper end of the shaft structure. After the plug-in is stable, the entire shaft structure is rotated, and the external thread 2012 on the shaft structure cooperates with the shaft tube 202. The shaft structure rotates and moves downward until it is embedded in the bearing layer. When disassembling, the shaft structure can be separated from the shaft tube 202 by rotating in the opposite direction. The entire shaft structure is easy to disassemble and assemble, and a stable installation of the floating boat body 100 is achieved.

[0064] Embodiment 3

[0065] Reference Figure 7, which is the third embodiment of the present invention.

[0066] In this embodiment, preferably, a connecting member 300 is provided between two adjacent floating ship bodies 100. By using the connecting member 300, after the two adjacent floating ship bodies 100 are spliced, the splicing strength of the two floating ship bodies 100 can be further increased, the construction area of ​​the wading arch bridge pipeline can be expanded, the construction scope can be expanded, and the two adjacent floating ship bodies 100 can be easily disassembled and assembled. The connecting member 300 includes:

[0067] The mounting ring 301 is sleeved on the fixing ring 2031 in the two floating boat bodies 100, and the two mounting rings 301 are respectively provided with a first connecting plate 302 and a second connecting plate 303, so that the first connecting plate 302 and the second connecting plate 303 are respectively installed on the two floating boat bodies 100;

[0068] A plurality of adjustment slots 305 are provided on the upper surface of the first connecting plate 302, and the adjustment slots 305 are distributed along the length of the first connecting plate 302;

[0069] And a limiting clamping plate 304 is installed at the other end of the second connecting plate 303 and is engaged with the adjusting clamping slot 305 .

[0070] In this embodiment, preferably, a fixing column 306 penetrating the first connecting plate 302 is provided on the surface of the mounting ring 301, and the first connecting plate 302 and the second connecting plate 303 can rotate around their respective fixing columns 306. A limiting ring 307 for limiting the first connecting plate 302 is provided at the outer end of the fixing column 306. The limiting ring 307 is threadedly connected to the fixing column 306 and can be limited by friction resistance when in contact with the first connecting plate 302. Similarly, the angle of the second connecting plate 303 can also be limited by the limiting ring 307.

[0071] In this embodiment, preferably, the length of the lower end of the limiting clamping plate 304 extending out of the lower surface of the second connecting plate 303 matches the depth of the adjusting clamping slot 305, so as to facilitate the clamping connection between the two.

[0072] In summary, when in use, the two floating boat bodies 100 are installed close to each other, so that the first connecting plate 302 is horizontal, and the limiting ring 307 is rotated to press and limit the first connecting plate 302, so that the position of the first connecting plate 302 is fixed, and the second connecting plate 303 on the other floating boat body 100 rotates downward from the top around the fixing column 306, driving the limiting clamping plate 304 to rotate downward and embed into the adjusting clamping groove 305, and then the other limiting ring 307 is rotated to limit and fix the position of the second connecting plate 303, thereby keeping the second connecting plate 303 stably engaged with the first connecting plate 302, keeping the positions of the two floating boat bodies 100 fixed, and not easily detaching outward.

[0073] Embodiment 4

[0074] Combining the structures in the first, second and third embodiments, a construction method of a simple floating boat for installing pipelines of the main arch ring of a wading cast-in-place arch bridge in this embodiment is obtained, which comprises the following steps:

[0075] Step 1: According to the required appearance size of the floating boat body 100, after calculating the buoyancy and the thrust of the water body, determine the number and distribution of the stable plug-in structures 200;

[0076] Step 2: Install the shaft cylinder 202 on the floating boat body 100, install the adjustment member 203 between the shaft cylinder 202 and the floating boat body 100, and adjust the angle of the extension shaft member 201 by adjusting the adjustment member 203;

[0077] Step 3: Open the floating boat body 100 to the required working position, start from the middle of the long side of the floating boat body 100, extend the length of the extension shaft 201 as needed, and extend the length of the extension shaft 201 extending outward into the water to the bearing layer by rotating the extension shaft 201;

[0078] Step 4: When the lower ends of all the extension shafts 201 have reached the bearing layer, measure the flatness of the floating vessel body 100, and adjust it by rotating the shaft tube 202 and the extension shaft 201. After the flatness adjustment is completed, stop rotating the extension shaft 201 to form a working surface;

[0079] Step 5: After the safety protection and construction scaffolding are installed on the working surface, the pipeline installation work can be carried out;

[0080] Step 6: After the construction is completed, the scaffolding and safety protection used for construction are first removed, and finally the shaft tube 202 is matched with the extension shaft 201 again to separate the lower end of the extension shaft 201 from the bearing layer, thereby releasing the constraints on the simple floating boat.

[0081] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A simple floating boat for installing pipelines in the main arch ring of a wading cast-in-place arch bridge, characterized in that: include: A floating boat body (100), wherein the edge of the floating boat body (100) is provided with a plurality of waist-shaped holes (101) along the circumference direction thereof; A stable plug-in structure (200) is installed inside the waist-shaped hole (101), the stable plug-in structure (200) comprising an extension shaft (201) installed obliquely in the waist-shaped hole (101), a shaft cylinder (202) sleeved on the extension shaft (201), and an adjustment member (203) for adjusting the inclination angle of the extension shaft (201).

2. A simple floating boat for installing pipelines in the main arch ring of a water-cast arch bridge according to claim 1, characterized in that: The adjusting member (203) for changing the angle of the shaft cylinder (202) comprises: Two fixing rings (2031) fixed on the upper surface of the floating boat body (100) and located on both sides of the waist-shaped hole (101), and a vertical plate (2032) is provided between the fixing ring (2031) and the floating boat body (100); A rotating shaft (2033) rotatably mounted between the outer surface of the shaft cylinder (202) and the vertical plate (2032); The sliding sleeve is an arc-shaped sliding sleeve (2035) arranged on the fixing ring (2031).

3. A simple floating boat for installing pipelines in the main arch ring of a water-cast arch bridge according to claim 2, characterized in that: A fixing plate (2034) located inside the fixing ring (2031) is fixed on the rotating shaft (2033), and the other end of the fixing plate (2034) is fixed on the outer surface of the arc-shaped sliding sleeve (2035). A notch is provided on the inner surface of the arc-shaped sliding sleeve (2035) for the vertical plate (2032) to pass through.

4. A simple floating boat for installing pipelines in the main arch ring of a water-cast arch bridge according to claim 3, characterized in that: A limiting bolt (2036) for limiting the position of the arc-shaped sliding sleeve (2035) is screwed on the surface of the arc-shaped sliding sleeve (2035).

5. The simple floating boat for installing pipelines of the main arch ring of a water-cast arch bridge according to claim 3 is characterized in that: The extension shaft member (201) inserted into the river bottom bearing layer comprises: A plurality of plug-in shafts (2011) connected end to end, wherein the outer surface of the plug-in shaft (2011) is provided with an external thread (2012) that matches the shaft cylinder (202); A threaded column (2013) mounted on the lower end of the plug-in shaft (2011); And a mounting hole (2014) is provided on the upper surface of the plug-in shaft (2011).

6. A simple floating boat for installing pipelines in the main arch ring of a water-cast arch bridge according to claim 5, characterized in that: A limiting shaft (2015) for limiting the position of a threaded column (2013) inserted into the mounting hole (2014) is provided at the upper end of each plug-in shaft (2011).

7. The simple floating boat for installing pipelines in the main arch ring of a water-forging cast-in-situ arch bridge according to claim 5, characterized in that: A connecting member (300) is provided between two adjacent floating ship bodies (100), and the connecting member (300) comprises: A mounting ring (301) sleeved on the fixing ring (2031) in the two floating boat bodies (100), wherein the two mounting rings (301) are respectively provided with a first connecting plate (302) and a second connecting plate (303); A plurality of adjustment slots (305) are provided on the upper surface of the first connecting plate (302); And a limit clamping plate (304) is installed at the other end of the second connecting plate (303) and is engaged with the adjusting clamping slot (305).

8. The simple floating boat for installing pipelines of the main arch ring of a water-forging cast-in-situ arch bridge according to claim 7 is characterized in that: A fixing column (306) penetrating the first connecting plate (302) is arranged on the surface of the mounting ring (301), and a limiting ring (307) for limiting the position of the first connecting plate (302) is arranged at the outer end of the fixing column (306).

9. The simple floating boat for installing pipelines in the main arch ring of a water-cast arch bridge according to claim 7, characterized in that: The length of the lower end of the limiting clamping plate (304) extending out of the lower surface of the second connecting plate (303) matches the depth of the adjusting clamping slot (305).

10. A construction method for a simple floating boat for installing pipelines in the main arch ring of a water-cast arch bridge, characterized in that: The following steps are involved: Step 1: According to the required external dimensions of the floating vessel body (100), after calculating the buoyancy and the thrust of the water body, the number and distribution of the stable plug-in structures (200) are determined; Step 2: installing shaft cylinders (202) on the floating boat body (100), installing adjustment components (203) between the shaft cylinders (202) and the floating boat body (100), and adjusting the angle of the extension shaft (201) by means of the adjustment components (203); Step 3: Open the floating boat body (100) to the required working position, start from the middle of the long side of the floating boat body (100), extend the length of the extension shaft (201) as required, and extend the length of the extension shaft (201) extending outward into the water to the bearing layer by rotating the extension shaft (201); Step 4: When the lower ends of all the extension shafts (201) have reached the bearing layer, the flatness of the floating vessel body (100) is measured, and the flatness is adjusted by rotating the shaft tube (202) and the extension shaft (201). After the flatness adjustment is completed, the rotation of the extension shaft (201) is stopped to form a working surface; Step 5: After the safety protection and construction scaffolding are installed on the working surface, the pipeline installation work can be carried out; Step 6: After the construction is completed, the scaffolding and safety protection used for construction are first dismantled, and finally the shaft tube (202) is matched with the extension shaft member 2 (01) again to separate the lower end of the extension shaft member (201) from the bearing layer, thereby releasing the constraints on the simple floating boat.

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