Installation method of extra-large fluid guide support

Abstract

This application provides an installation method for an extra-large water diversion support, comprising the following steps: S1. Obtaining the elevation data of the embedded parts of the top and bottom plates of the extra-large concrete pipe; S2. Preliminarily processing the top plate of the top sliding support to reserve height adjustment allowance; S3. Lifting the extra-large water diversion and installing the bottom fixed support; if there is a planar position deviation between the fixed support and the embedded parts of the bottom plate, adding steel strips for connection and expanding the anchorage; S4. Lowering the extra-large water diversion into position and connecting it with the fixed support; S5. Obtaining the actual distance between the extra-large water diversion and the embedded parts of the top plate, and compensating for the height deviation of the top plate of the sliding support; S6. Compressing and temporarily fixing the sliding support for installation, then releasing the fixation to make it contact the embedded parts of the top plate; if there is a planar position deviation between the sliding support and the embedded parts of the top plate, adding steel strips for connection and expanding the anchorage. This application cleverly transfers and digests the compensation for height error in the adjustment of the sliding support, achieving precise alignment in the height direction.

Description

Technical Field

[0001] This application relates to the field of industrial equipment installation technology, and in particular to an installation method for an extra-large fluid-draining support. Background Technology

[0002] Some recirculation piping systems with low airflow velocities are constructed using concrete to reduce construction costs due to lower impact loads. However, core components used for airflow testing and airflow redirection require higher precision and toughness, thus necessitating the use of steel structures. These recirculation piping systems contain four redirection sections to achieve airflow redirection. The exterior of each redirection section is a concrete structure serving as the airflow channel, while multiple guide tubes are installed internally to facilitate airflow redirection.

[0003] With the continuous improvement of my country's industrialization level, reflux pipeline equipment is gradually developing towards larger size and higher parameters. In particular, some reflux pipeline equipment with low airflow velocity can have cross-sectional dimensions (width and height) of 50×50m or more. The height of the duct installed in the turning section can reach 45m or more. These extra-large ducts together with the extra-large concrete pipes outside constitute extra-large turning sections.

[0004] like Figure 1 As shown, the extra-large concrete pipe 11 includes an airflow inlet end and an airflow outlet end, with multiple extra-large drainage pipes 12 installed in the middle, and adopts a steel-concrete composite shear wall structure. Due to the height of the shear wall, in order to ensure the stability of the overall structure during construction, the top slab must be completed and formed as a whole before the extra-large drainage pipes 12 can be installed.

[0005] like Figure 2 As shown, the extra-large drainage pipe 12 has multiple sliding supports 2 at the top and multiple fixed supports 3 at the bottom. The bottom plate of the sliding support 2 is bolted to the extra-large drainage pipe, and the top plate of the fixed support 3 is bolted to the extra-large drainage pipe. The extra-large concrete pipe 11 has embedded steel plates in its bottom and top plates. The extra-large drainage pipe 12 is fixed in the embedded plates via the sliding supports 2 and the fixed supports 3 to achieve installation. The top plate of the sliding support 2 is welded to the embedded plate, and the bottom plate of the fixed support 3 is welded to the embedded plate.

[0006] like Figure 3 As shown, the sliding support 2 includes an upper support 21 and a lower support 22, which are connected by a sleeve. The relative sliding between the upper support 21 and the lower support 22 can release the vibration and displacement of the extra-large duct under the blowing test conditions.

[0007] The allowable construction deviation for concrete structures is greater than that for steel structures. When installing extra-large drainage pipes after the construction of extra-large concrete pipes is completed, there is a problem of relative positional deviation between the embedded plate and the support, which makes it impossible for the support of the extra-large drainage pipe to be connected to the embedded plate.

[0008] Therefore, it is necessary to develop an installation method for an ultra-large fluid drainage support to solve the aforementioned problems. Summary of the Invention

[0009] To address the problem of the inability to install extra-large fluid drainage supports due to relative positional deviations between the embedded plate and the support, this application provides an installation method for extra-large fluid drainage supports.

[0010] The installation method of the extra-large fluid drainage support provided in this application adopts the following technical solution: A method for installing an extra-large fluid drainage support includes the following steps: S1. Obtain the elevation data of the embedded parts in the top and bottom slabs of extra-large concrete pipes; S2. Based on the dimensions of the extra-large drainage system to be installed and the bottom fixed support, the top plate of the top sliding support is preliminarily machined to reserve height adjustment allowance; S3. Lift the extra-large diverter and install the bottom fixed support; if there is a planar position deviation between the fixed support and the pre-embedded parts of the base plate, connect and expand the anchor by adding steel strips; S4. Lower the extra-large drain into place and connect it to the fixed support; S5. Obtain the actual distance between the extra-large drainage fluid and the pre-embedded parts in the top plate, and perform secondary repair and processing on the top plate of the sliding support to compensate for the height deviation; S6. Compress and temporarily fix the sliding support for installation, then release the fixation to make it contact the embedded parts of the top plate; if there is a planar position deviation between the sliding support and the embedded parts of the top plate, connect and expand the anchorage by adding steel strips.

[0011] Furthermore, in step S1, the average elevation value D1 of the top plate embedded parts and the average elevation value D2 of the bottom plate embedded parts are calculated. In step S2, the length L of the extra-large drainage fluid to be installed and the height H of the fixed support are measured, and the top plate of the sliding support is machined so that the maximum working height of the sliding support is (D1-D2-LH)+(5~10)mm.

[0012] Furthermore, in steps S3 and S6, the specific method for connecting and expanding the anchorage by adding steel strips is as follows: Weld a first steel strip between the bottom or top plates of adjacent supports, and weld a second steel strip around the bottom or top plate of the support. The first steel strip and the second steel strip are welded to their respective embedded parts. The first steel strip is connected to the parent body of the extra-large concrete pipe using chemical anchors, and the second steel strip is connected to the corresponding embedded part using plug welding.

[0013] Furthermore, the first steel strip and the second steel strip are fully penetrated welded to the base plate of the fixed support; The first and second steel strips are fully penetrated welded to the top plate of the sliding support.

[0014] Furthermore, when the first steel strip and the second steel strip are welded to their respective embedded parts, the outer periphery of the first steel strip and the second steel strip are overlapped with the embedded parts, and the corresponding weld leg size is not less than the thickness of the first steel strip and the second steel strip.

[0015] Furthermore, when the second steel strip is plug-welded to the corresponding embedded part, a hole is made in the second steel strip, and plug welding is performed between the hole in the second steel strip and the embedded part.

[0016] Furthermore, in step S5, the distance between the extra-large drainage fluid and the embedded part of the top plate is measured and the average value A is calculated. The top plate of the sliding support is then processed to reduce the thickness of the top plate by A.

[0017] Furthermore, when determining the maximum working height of the sliding support in step S2, the maximum working load of the sliding support is input into the finite element analysis software to calculate the maximum distance B between the upper and lower supports when the sliding support does not undergo plastic deformation. When the maximum distance between the upper and lower supports is B, the height of the sliding support is the maximum working height.

[0018] Furthermore, in step S3, before the extra-large diversion fluid is lifted, a steel profile is installed between the inner wall of the extra-large diversion fluid and the embedded part of the top plate, and a steel profile is installed between the outer wall of the extra-large diversion fluid and the embedded part of the top plate. The steel profile is welded to the embedded parts of the top plate and fits against the extra-large fluid diversion wall; and the steel profile is removed before the sliding support is installed in step S6.

[0019] Furthermore, in step S6, a temporary rigid connecting plate is added to the outside of the upper and lower supports of the sliding support and spot-welded to compress and temporarily fix the height of the sliding support.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. In response to the height gap problem caused by construction errors in concrete structures, this solution abandons the high-cost approach of repairing extra-large fluid diversion bodies and instead adopts a method of calculating the elevation and processing the top plate of the sliding support twice (S2 is initially processed with a margin, and S5 is precisely thinned after actual measurement). This method cleverly transfers and digests the compensation for height errors in the repair of the sliding support, achieving precise alignment in the height direction. 2. When the support is horizontally misaligned with the embedded plate during installation, resulting in insufficient effective weld length, the introduction of the first and second steel strips not only expands the welding contact area but also transforms the single support stress into a multi-support joint stress system. With the aid of chemical anchor bolts, part of the load is directly transferred to the concrete matrix, greatly dispersing stress concentration and ensuring that the structural strength requirements of the air blowing test are met even under severe misalignment. 3. For extra-large drainage systems reaching up to 45m in length, overturning or displacement misalignment is highly likely during the lifting and lowering process using mechanical jacks at the bottom. This solution utilizes structural steel to construct a guiding and limiting device between the drainage system's sidewall and the embedded plate before lifting. This eliminates the safety hazard of overturning and, like a "guide rail," ensures the verticality of the drainage system during Z-axis movement, significantly improving installation accuracy. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 It is an axonometric view of the steering segment in the background technology; Figure 2 This is an isometric view of the connection between an extra-large fluid drain and a support in the background technology; Figure 3 This is a schematic diagram of the sliding support structure in the background art; Figure 4 This is a schematic diagram of the arrangement of the first and second steel strips according to an embodiment of this application; Figure 5 This is a schematic diagram of the installation process of the sliding support according to an embodiment of this application.

[0023] Figure label: 1. Turning section; 11. Extra-large concrete pipe; 12. Extra-large water diversion section; 2. Sliding support; 21. Upper support; 22. Lower support; 3. Fixed support; 4. First steel strip; 5. Second steel strip. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0025] The subject targeted by the solution in this embodiment is as follows: Figure 1-3 As shown: The extra-large concrete pipe 11 includes an airflow inlet end and an airflow outlet end, with multiple extra-large diversion vessels 12 installed in the middle, and adopts a steel-concrete composite shear wall structure. Due to the height of the shear wall, in order to ensure the stability of the overall structure during construction, the top plate of the extra-large concrete pipe 11 must be completed to form a whole before the extra-large diversion vessels 12 can be installed. The top of the extra-large diversion vessels 12 is equipped with multiple sliding supports 2, and the bottom is equipped with multiple fixed supports 3. The bottom plate of the sliding support 2 is bolted to the extra-large diversion vessel 12, and the top plate of the fixed support 3 is bolted to the extra-large diversion vessel 12. Embedded steel plates are set in the bottom and top plates of the extra-large concrete pipe 11. The extra-large diversion vessels 12 are fixed in the embedded plates through the sliding supports 2 and the fixed supports 3 to achieve the installation of the extra-large diversion vessels 12. The top plate of the sliding support 2 is welded to the embedded plate, and the bottom plate of the fixed support 3 is welded to the embedded plate. The sliding support 2 includes an upper support 21 and a lower support 22, which are connected by a sleeve. The relative sliding between the upper support 21 and the lower support 22 can release the vibration and displacement of the extra-large duct 12 under the blowing test conditions.

[0026] The extra-large concrete pipe 11 can only be installed after the extra-large diversion pipe 12 is completed. However, the allowable construction deviation of concrete structures is larger than that of steel structures, which leads to the quality risk that the support of the extra-large diversion pipe 12 cannot be connected to the embedded plate during installation.

[0027] Therefore, it is necessary to formulate positional deviation compensation measures between the embedded plate and the support to solve the problem that the support of the extra-large drainage fluid 12 cannot be connected to the embedded plate.

[0028] In view of the above, this application is hereby made.

[0029] Reference Figure 4 , Figure 5 This application discloses a method for installing an extra-large fluid drainage support, which includes the following steps: S1. Measure the elevation of the embedded parts of the top plate and the bottom plate of the extra-large concrete pipe 11, calculate the average elevation value D1 of the embedded parts of the top plate corresponding to the position of the extra-large diverter 12 to be installed, and calculate the average elevation value D2 of the embedded parts of the bottom plate corresponding to the position of the extra-large diverter 12 to be installed. S2. Measure the length L of the extra-large drainage fluid 12 to be installed, measure the height H of the fixed support 3 to be installed, and process the top plate of the sliding support 2 so that the maximum working height of the sliding support 2 is (D1-D2-LH)+(5~10)mm. S3. After the extra-large drainage pipe 12 is installed, a mechanical jack is set at the bottom of the extra-large drainage pipe 12 to lift it, and a fixed support 3 is installed. If there is a deviation between the fixed support 3 and the embedded plate, a first steel strip 4 is welded between the bottom plates of adjacent fixed supports 3, and a second steel strip 5 is welded around the bottom plate of the fixed support 3. The first steel strip 4 and the second steel strip 5 are welded to the embedded plate respectively. The first steel strip 4 is connected to the bottom plate of the extra-large concrete pipe 11 by chemical anchor bolts, and the second steel strip 5 is connected to the embedded plate by plug welding. S4. Use a mechanical jack to slowly lower the extra-large drainage fluid 12 until it contacts the fixed support 3, and connect the fixed support 3 and the extra-large drainage fluid 12. S5. Measure the distance between the embedded plate of the top plate of the extra-large drainage pipe 12 and the extra-large concrete pipe 11, calculate the average value A, process the top plate of the sliding support 2, and reduce the thickness of the top plate by A. S6. Compress the height of the sliding support 2 so that the upper support 21 and the lower support 22 are in contact, and temporarily fix the upper support 21 and the lower support 22; install the sliding support 2, connect the sliding support 2 to the extra-large drainage pipe 12, release the fixation of the upper support 21 and the lower support 22, and move the upper support 21 so that the upper support 21 is in contact with the embedded plate; if there is a deviation between the sliding support 2 and the embedded plate, weld the first steel strip 4 between the top plates of adjacent sliding supports 2, and weld the second steel strip 5 around the top plate of the sliding support 2; weld the first steel strip 4 and the second steel strip 5 to the embedded plate respectively; connect the first steel strip 4 to the top plate of the extra-large concrete pipe 11 with chemical anchors, and connect the second steel strip 5 to the embedded plate with plug welding.

[0030] Specifically, a laser tracker is used to measure the elevation of the embedded parts on the top plate of the extra-large concrete pipe 11, and the average elevation value D1 of the embedded parts on the top plate corresponding to the position of the extra-large diversion fluid 12 to be installed is calculated; a laser tracker is used to measure the elevation of the embedded parts on the bottom plate of the extra-large concrete pipe 11, and the average elevation value D2 of the embedded parts on the bottom plate corresponding to the position of the extra-large diversion fluid 12 to be installed is calculated.

[0031] Input the maximum working load of the sliding support 2 into the finite element analysis software, and calculate the maximum distance B between the upper support 21 and the lower support 22 when the sliding support 2 does not undergo plastic deformation; when the maximum distance between the upper support 21 and the lower support 22 is B, the height of the sliding support 2 is the maximum working height.

[0032] The length L of the extra-large drainage fluid 12 to be installed is measured using a measuring tape, and the height H of the fixed support 3 to be installed is measured using a tape measure. The top plate of the sliding support 2 is machined so that the maximum working height of the sliding support 2 is (D1-D2-LH)+(5~10)mm.

[0033] After the extra-large diversion fluid 12 is installed, steel profiles are installed between the inner wall of the extra-large diversion fluid 12 and the embedded plate of the top plate of the extra-large concrete pipe 11, and steel profiles are installed between the outer wall of the extra-large diversion fluid 12 and the embedded plate of the top plate of the extra-large concrete pipe 11; the steel profiles are welded to the embedded plate and are in close contact with the wall of the extra-large diversion fluid 12.

[0034] Mechanical jacks are installed at the bottom of the extra-large drainage fluid 12 to lift it, and fixed supports 3 are installed; if there is no relative positional deviation between the fixed supports 3 and the embedded plate, the base plate of the fixed supports 3 is welded to the embedded plate; Figure 4 As shown, if there is a deviation between the fixed support 3 and the embedded plate, the first steel strip 4 is welded between the bottom plates of the adjacent fixed supports 3, and the second steel strip 5 is welded around the bottom plate of the fixed support 3; the first steel strip 4 and the second steel strip 5 are welded to the embedded plate respectively; the first steel strip 4 is connected to the bottom plate of the extra-large concrete pipe 11 by chemical anchor bolts, and the second steel strip 5 is connected to the embedded plate by plug welding.

[0035] Furthermore, the thickness of the first steel strip 4 and the second steel strip 5 is the same as the thickness of the base plate of the fixed support 3; the first steel strip 4 and the second steel strip 5 are respectively fully penetrated welded to the base plate of the fixed support 3.

[0036] Furthermore, when the first steel strip 4 and the second steel strip 5 are welded to the embedded plate, the outer periphery of the first steel strip 4 and the second steel strip 5 are overlapped and welded to the embedded plate, and the corresponding weld leg size is not less than the thickness of the first steel strip 4 and the second steel strip 5.

[0037] Furthermore, when the second steel strip 5 is plug-welded to the embedded plate, a hole is made in the second steel strip 5, and plug welding is performed between the hole in the second steel strip 5 and the embedded plate.

[0038] Use a mechanical jack to slowly lower the extra-large drainage fluid 12 until it contacts the fixed support 3, connect the fixed support 3 and the extra-large drainage fluid 12, and remove the steel profile.

[0039] Measure the distance between the embedded plate of the top plate of the extra-large drainage pipe 12 and the extra-large concrete pipe 11, calculate the average value A, and process the top plate of the sliding support 2 to reduce the thickness of the top plate by A.

[0040] like Figure 5 As shown, the height of the compressed sliding support 2 is brought into contact with the upper support 21 and the lower support 22, and the upper support 21 and the lower support 22 are temporarily fixed; the sliding support 2 is installed and connected to the extra-large drainage pipe 12; the fixing of the upper support 21 and the lower support 22 is released, and the upper support 21 is moved to contact the embedded plate; if there is no relative positional deviation between the sliding support 2 and the embedded plate, the top plate of the sliding support 2 is welded to the embedded plate; if there is a deviation between the sliding support 2 and the embedded plate, the first steel strip 4 is welded between the top plates of adjacent sliding supports 2, and the second steel strip 5 is welded around the top plate of the sliding support 2; the first steel strip 4 and the second steel strip 5 are welded to the embedded plate respectively; the first steel strip 4 is connected to the top plate of the extra-large concrete pipe 11 by chemical anchor bolts, and the second steel strip 5 is connected to the embedded plate by plug welding.

[0041] Furthermore, the thickness of the first steel strip 4 and the second steel strip 5 is the same as the thickness of the top plate of the sliding support 2; the first steel strip 4 and the second steel strip 5 are respectively fully penetrated welded to the top plate of the sliding support 2.

[0042] Furthermore, when the first steel strip 4 and the second steel strip 5 are welded to the embedded plate, the outer periphery of the first steel strip 4 and the second steel strip 5 are overlapped and welded to the embedded plate, and the corresponding weld leg size is not less than the thickness of the first steel strip 4 and the second steel strip 5.

[0043] Furthermore, when the second steel strip 5 is plug-welded to the embedded plate, a hole is made in the second steel strip 5, and plug welding is performed between the hole in the second steel strip 5 and the embedded plate.

[0044] There are two types of deviations between the embedded plate of the extra-large concrete pipe 11 and the support of the extra-large diversion pipe 12: one is the height deviation, that is, there is a gap or no space for the support to be installed with the embedded plate; the other is the planar position deviation, that is, there is a horizontal position deviation between the support and the embedded plate during installation. The bottom plate of the fixed support 3 and the top plate of the sliding support 2 cannot be fully located on the embedded plate, resulting in insufficient weld length between the support and the embedded plate to meet the stress requirements.

[0045] When compensating for height deviation, the length of the extra-large drain 12 can be adjusted, but the workload is too large. Therefore, adjusting the height of the support is the most suitable. The support consists of a fixed support 3 at the bottom and a sliding support 2 at the top. The fixed support 3 can be installed first, and the sliding support 2 can be installed last. The height deviation can be compensated by adjusting the height of the sliding support 2. Although the height deviation of the sliding support 2 can be compensated by adjusting the distance between the upper support 21 and the lower support 22, this method will reduce the vibration and deformation adjustment of the sliding support 2. This method should be avoided. The optimal working condition is that the sliding support 2 is still at its maximum working height after the height deviation compensation is completed. By measuring the installation space dimensions of the extra-large drainage fluid 12, the height of the extra-large drainage fluid 12, and the height of the fixed support 3, the maximum working height of the sliding support 2 can be preliminarily determined. In order to leave a certain amount of adjustment allowance, the top plate of the sliding support 2 is increased by 5-10mm. After the fixed support 3 is installed, the installation space of the sliding support 2 can be measured. At this time, the top plate of the sliding support 2 can be adjusted to compensate for the height deviation and make the sliding support 2 at the maximum working height.

[0046] Furthermore, a certain amount of installation space is required when installing the sliding support 2. Therefore, the upper support 21 and the lower support 22 of the sliding support 2 are attached and temporarily fixed to each other, thereby compressing the height of the sliding support 2 and achieving the purpose of sequential and efficient installation.

[0047] When planar position deviation exists, the effective weld length between the support and the embedded plate becomes shorter, resulting in insufficient connection strength. Therefore, compensating for the planar position deviation means increasing the weld length between the support and the embedded plate to meet the connection strength requirements. This embodiment employs a combination of two measures: first, enlarging the dimensions of the bottom plate of the fixed support 3 and the top plate of the sliding support 2 to maximize the weld length between the support and the embedded plate; second, connecting adjacent supports using the first steel strip 4, transforming the stress on the weld between a single support and the embedded plate into a shared stress on all welds between the supports and the embedded plate, reducing stress concentration and making the weld stress more uniform. Simultaneously, by chemically anchoring the first steel strip 4 to the extra-large concrete pipe 11, the number of load-bearing points is increased, dispersing the stress between the support and the embedded plate, and transferring the stress portion to the extra-large concrete pipe 11. By combining these two measures, the problem of insufficient connection strength between the support and the embedded plate can be solved, thus compensating for the planar position deviation.

[0048] Furthermore, there are two problems when the extra-large drainage device 12 is lifted and lowered: first, it is prone to displacement, which reduces the installation accuracy; second, there is a risk of the single extra-large drainage device 12 overturning. These two problems can be solved by setting steel profiles on both sides of the extra-large drainage device 12 and attaching them to the pre-embedded plate, which serves as a guide.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for installing an extra-large fluid drainage support, characterized in that, Includes the following steps: S1. Obtain the elevation data of the embedded parts in the top and bottom slabs of extra-large concrete pipes; S2. Based on the dimensions of the extra-large drainage system to be installed and the bottom fixed support, the top plate of the top sliding support is preliminarily machined to reserve height adjustment allowance; S3. Lift the extra-large diverter and install the bottom fixed support; if there is a planar position deviation between the fixed support and the pre-embedded parts of the base plate, connect and expand the anchor by adding steel strips; S4. Lower the extra-large drain into place and connect it to the fixed support; S5. Obtain the actual distance between the extra-large drainage fluid and the pre-embedded parts in the top plate, and perform secondary repair and processing on the top plate of the sliding support to compensate for the height deviation; S6. Compress and temporarily fix the sliding support for installation, then release the fixation to make it contact the embedded parts of the top plate; if there is a planar position deviation between the sliding support and the embedded parts of the top plate, connect and expand the anchorage by adding steel strips.

2. The installation method of the extra-large fluid drainage support according to claim 1, characterized in that, In step S1, the average elevation value D1 of the top plate embedded parts and the average elevation value D2 of the bottom plate embedded parts are calculated. In step S2, the length L of the extra-large drainage fluid to be installed and the height H of the fixed support are measured, and the top plate of the sliding support is machined so that the maximum working height of the sliding support is (D1-D2-LH)+(5~10)mm.

3. The installation method of the extra-large fluid drainage support according to claim 1, characterized in that, In steps S3 and S6, the specific method of connecting and expanding the anchorage by adding steel strips is as follows: Weld a first steel strip between the bottom or top plates of adjacent supports, and weld a second steel strip around the bottom or top plate of the support. The first steel strip and the second steel strip are welded to their respective embedded parts. The first steel strip is connected to the parent body of the extra-large concrete pipe using chemical anchors, and the second steel strip is connected to the corresponding embedded part using plug welding.

4. The installation method of the extra-large fluid drainage support according to claim 3, characterized in that, The first steel strip and the second steel strip are respectively fully penetrated welded to the base plate of the fixed support; The first and second steel strips are fully penetrated welded to the top plate of the sliding support.

5. The installation method of the extra-large fluid drainage support according to claim 3, characterized in that, When the first steel strip and the second steel strip are welded to their respective embedded parts, the outer periphery of the first steel strip and the second steel strip are overlapped with the embedded parts and welded, and the corresponding weld leg size is not less than the thickness of the first steel strip and the second steel strip.

6. The installation method of the extra-large fluid drainage support according to claim 3, characterized in that, When the second steel strip is plug-welded to the corresponding embedded part, a hole is made in the second steel strip, and plug welding is performed between the hole in the second steel strip and the embedded part.

7. The installation method of the extra-large fluid drainage support according to claim 1, characterized in that, In step S5, the distance between the extra-large drainage fluid and the embedded part of the top plate is measured and the average value A is calculated. The top plate of the sliding support is processed to reduce the thickness of the top plate by A.

8. The installation method of the extra-large fluid drainage support according to claim 2, characterized in that, When determining the maximum working height of the sliding support in step S2, the maximum working load of the sliding support is input into the finite element analysis software, and the maximum distance B between the upper and lower supports is calculated when the sliding support does not undergo plastic deformation. When the maximum distance between the upper and lower supports is B, the height of the sliding support is the maximum working height.

9. The installation method of the extra-large fluid drainage support according to claim 1, characterized in that, Before the extra-large diversion fluid is lifted in step S3, steel profiles are installed between the inner wall of the extra-large diversion fluid and the embedded parts of the top plate, and steel profiles are installed between the outer wall of the extra-large diversion fluid and the embedded parts of the top plate. The structural steel is welded to the embedded parts of the top plate and fits against the extra-large fluid diversion wall surface; Before installing the sliding support in step S6, the steel profile is removed.

10. The installation method of the extra-large fluid drainage support according to claim 1, characterized in that, In step S6, a temporary rigid connecting plate is installed on the outside of the upper and lower supports of the sliding support and spot-welded to compress and temporarily fix the height of the sliding support.

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