CN115560127A - Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve - Google Patents

Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve Download PDF

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Publication number
CN115560127A
CN115560127A CN202211061158.0A CN202211061158A CN115560127A CN 115560127 A CN115560127 A CN 115560127A CN 202211061158 A CN202211061158 A CN 202211061158A CN 115560127 A CN115560127 A CN 115560127A
Authority
CN
China
Prior art keywords
steel pipe
inner steel
welding
concrete sleeve
track
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211061158.0A
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Chinese (zh)
Inventor
孙晨
绍顺勇
沈志祥
赵婷婷
杨泽烽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanjing Jiuda Construction Group Co ltd
Original Assignee
Nanjing Jiuda Construction Group Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanjing Jiuda Construction Group Co ltd filed Critical Nanjing Jiuda Construction Group Co ltd
Priority to CN202211061158.0A priority Critical patent/CN115560127A/en
Publication of CN115560127A publication Critical patent/CN115560127A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
    • F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06—Accessories therefor, e.g. anchors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L7/00—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic
    • F16L7/02—Supporting of pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic and sealing the pipes or cables inside the other pipes, cables or sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes

Abstract

The invention discloses a construction platform for passing through a steel pipe in a large-diameter concrete sleeve and a construction process, which are used for installing an inner steel pipe in the concrete sleeve and are characterized in that: the concrete sleeve pipe concrete pipe pile forming machine comprises a track, an operating mechanism and a moving vehicle, wherein the track is arranged in a concrete sleeve pipe, the moving vehicle is arranged on the track, and the moving vehicle is used for moving an inner steel pipe; the operating mechanism is used for operating the moving vehicle to move. The invention avoids supporting the inner steel pipe and improves the construction efficiency.

Description

Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve
Technical Field
The invention relates to a construction platform for passing through a steel pipe in a large-diameter concrete sleeve and a construction process, and belongs to the technical field of pipeline construction.
Background
The large-scale pipeline passes through the roadbed below the subway and the high-speed rail and is generally constructed by adopting a non-excavation method; the excavation construction occupies a large working surface, the slope excavation is easy to disturb surrounding soil layers, certain influence is caused on surrounding structures and buildings, the foundation trench collapse is easy to cause due to poor soil quality, and even the surrounding structures and buildings are settled, cracked or collapsed to cause safety accidents; workers in the pipe burying construction process need to cooperate with machinery to operate in the excavation foundation trench, the risk is high, the cost is high by adopting a supporting mode, and the construction period is long.
Disclosure of Invention
The purpose of the invention is as follows: in order to avoid supporting the inner steel pipe and improve the construction efficiency, the invention provides a construction platform for passing through the steel pipe in the large-diameter concrete sleeve and a construction process.
The technical scheme is as follows: in order to realize the purpose, the invention adopts the technical scheme that:
the utility model provides a steel pipe passes through construction platform in heavy-calibre concrete sleeve for steel pipe in the concrete sleeve installation, including track, operating device and locomotive, wherein:
the track is arranged in the concrete sleeve, the moving vehicle is arranged on the track and used for moving the inner steel pipe; the operating mechanism is used for operating the moving vehicle to move.
Preferably: the auxiliary fixing mechanism is used for realizing auxiliary fixing between the inner steel pipe and the concrete sleeve.
Preferably, the following components: the operating mechanism comprises a connecting plate, a guide wheel, a steel rope and a winch, wherein the front side of the connecting plate is provided with a built-in hole which penetrates through the inside of the connecting plate; the guide wheel is arranged at the bottom of the connecting plate, one end of the steel rope is fixedly connected with the winch, and the other end of the steel rope is fixedly connected with the built-in hole.
Preferably, the following components: the auxiliary fixing mechanism comprises a supporting column, a wheel carrier and a rotating wheel, one end of the supporting column is fixedly connected with the inner steel pipe, the other end of the supporting column is fixedly connected with the wheel carrier, the rotating wheel is rotatably installed on the wheel carrier, and the rotating wheel is in contact with the inner wall of the concrete sleeve.
Preferably: and a movable pulley block is arranged between the winch and the built-in hole, and the steel rope bypasses the movable pulley block and is respectively and fixedly connected with the winch and the built-in hole.
Preferably: the track is a U-shaped grooved track.
A construction process for a steel pipe in a large-diameter concrete sleeve to pass through a construction platform comprises the following steps:
step 1, finishing the installation of the concrete sleeve, finishing the treatment of an inner seam, and having the condition of installing an inner steel pipe;
step 2, arranging a track in the range of 30 degrees of the inner bottom of the concrete sleeve, wherein the track is formed by sectional installation of angle steel along the axial direction of the pipeline;
step 3, welding the inner steel pipes, respectively placing the inner steel pipes outside the concrete sleeve for construction, wherein the inner steel pipes are provided with a plurality of sections, placing 2/3 of the first section of the inner steel pipe on a track moving vehicle in the concrete sleeve, and then starting welding construction of the first section of the inner steel pipe and the following section of the inner steel pipe;
step 4, after the welding of the first section of inner steel pipe and the second section of inner steel pipe is finished, pulling the two sections of inner steel pipes to enable the second section of inner steel pipe to move to the initial position, then installing and welding a third section of inner steel pipe, pulling the three sections of inner steel pipes after the third section of inner steel pipe is welded and checked to be qualified, enabling the third section of inner steel pipe to move to the initial position, and so on until the first section of steel pipe moves from one end to the other end in the concrete sleeve;
and 5, finishing the installation of the inner steel pipes, detecting each welding line to be qualified, checking and accepting the inner steel pipes, sealing and plugging the gaps at two ends between the inner steel pipes and the concrete sleeve by adopting bricking, and then injecting cement paste.
Preferably: when the inner steel pipe is welded, tack welding is firstly carried out, and the upper part, the lower part, the left part and the right part of the periphery of the connector are respectively provided with one part, at least three parts are arranged; when the interface welding seam is subjected to multi-layer welding, the welding leading and arc extinguishing positions of each layer of surfacing welding in the welding seam are not overlapped, the first layer of the welding seam is concave, and the root part of the welding seam is completely welded; the middle layer is required to completely combine two welded edges, the last layer is required to completely fill the welding line, and the transition from the welding line to the base metal is ensured to be smooth.
Preferably: after the inner steel pipe is arranged at the designed position, the inner steel pipe, the moving vehicle and the track are welded into a whole by electric welding, and the inner steel pipe is ensured not to displace due to dynamic load.
Compared with the prior art, the invention has the following beneficial effects:
1. the concrete sleeve inside the equipment is placed, the track is paved internally, the operating mechanism is placed and fixed, the axle of the trolley roller of the moving vehicle is pushed into the track groove, the moving vehicle can be prevented from sliding away from the track in the rolling process, the inner steel pipe is placed on the moving vehicle, the winch is used at the outlet end of the pipeline to pull the inner guide wheel and the connecting plate through the diagonal steel rope pulley block, the inner steel pipe is prevented from being supported, and the construction efficiency is improved.
2. By the movable pulley block principle, the pulley block can reduce the work done by overcoming the frictional resistance, reduce the traction force and transport the inner steel pipe carrier out of the concrete sleeve by smaller force
3. The left and right auxiliary fixing mechanisms welded in the middle outside the inner steel pipe can prevent the inner steel pipe from deviating to contact with the inner wall of the concrete sleeve to increase friction force, and simultaneously fix the spatial position of the inner steel pipe in the sleeve.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the operating mechanism of the present invention;
FIG. 3 is a schematic view of the auxiliary fixing mechanism of the present invention;
FIG. 4 is a side view of the present invention.
FIG. 5 shows the construction process of the present invention.
In the figure: 1. a concrete sleeve; 2. a track; 3. an operating mechanism; 301. a connecting plate; 302. a built-in hole; 303. a guide wheel; 304. a steel cord; 305. a winch; 4. a mobile vehicle; 5. an auxiliary fixing mechanism; 501. an inner steel tube; 502. a support column; 503. a wheel carrier; 504. a rotating wheel.
Detailed Description
The present invention is further illustrated by the following description in conjunction with the accompanying drawings and the specific embodiments, it is to be understood that these examples are given solely for the purpose of illustration and are not intended as a definition of the limits of the invention, since various equivalent modifications will occur to those skilled in the art upon reading the present invention and fall within the limits of the appended claims.
A large-caliber concrete casing internal steel pipe crossing construction platform, as shown in fig. 1-4, for installing an internal steel pipe 501 in a concrete casing 1, comprising a track 2, an operating mechanism 3, a moving vehicle 4 and an auxiliary fixing mechanism 5, wherein:
the track 2 is arranged in the concrete sleeve 1, the inner wall surface of the concrete sleeve 1 is tightly attached to the outer wall surface of the track 2, and the track 2 is a U-shaped groove-cutting track.
The trolley 4 is arranged on the track 2, the track 2 is connected with the trolley 4 through clamping, the track below the steel pipe transportation trolley for supporting in the sleeve wall is a U-shaped grooved track, and the wheel shaft of the trolley roller is propped into the convex groove of the track, so that the trolley can be prevented from sliding off the track in the rolling process. The moving vehicle 4 is used for moving the inner steel pipe 501; the operating mechanism 3 is used for operating the moving vehicle 4 to move. The steel pipe is placed on the trolley, the trolley is dragged by a winch at the outlet end of the pipeline through the diagonal double-rope pulley block, and the pulley block can carry the steel pipe out of the sleeve pipe with small force through the movable pulley block principle.
The auxiliary fixing mechanism 5 is used for realizing auxiliary fixing between the inner steel pipe 501 and the concrete casing 1. The operating mechanism 3 comprises a connecting plate 301, a guide wheel 303, a steel rope 304 and a winch 305, wherein the front surface of the connecting plate 301 is provided with a built-in hole 302, and the built-in hole 302 penetrates through the inside of the connecting plate 301; the guide wheel 303 is arranged at the bottom of the connecting plate 301, one end of the steel rope 304 is fixedly connected with the winch 305, and the other end of the steel rope is fixedly connected with the built-in hole 302. The operator can conveniently use the connecting plate 301 and the built-in hole 302 to penetrate, connect and fix the inner steel rope 304.
The auxiliary fixing mechanism 5 comprises a supporting column 502, a wheel frame 503 and a rotating wheel 504, one end of the supporting column 502 is fixedly connected with the inner steel pipe 501, the other end of the supporting column is fixedly connected with the wheel frame 503, the rotating wheel 504 is rotatably installed on the wheel frame 503, and the rotating wheel 504 is in contact with the inner wall of the concrete casing 1. The left and right guide wheels welded on the outer side of the steel pipe in the middle can prevent the steel pipe from deviating and contacting with the inner wall of the sleeve to increase friction force, and meanwhile, the spatial position of the steel pipe in the sleeve is also fixed.
A movable pulley block is arranged between the winch 305 and the built-in hole 302, and the steel rope 304 bypasses the movable pulley block and is respectively and fixedly connected with the winch 305 and the built-in hole 302.
The concrete sleeve 1 in the equipment is placed, the track 2 is paved in the inner part, the operating mechanism 3 is placed and fixed, the wheel shaft of a trolley roller of the moving vehicle 4 is pushed into a groove of the track 2, the moving vehicle 4 can be prevented from sliding off the track in the rolling process, the inner steel pipe 501 is placed on the moving vehicle 4, the winch 305 is used for dragging the inner guide wheel 303 and the connecting plate 301 through the diagonal steel rope 304 pulley block at the outlet end of the pipeline, the pulley block can reduce and overcome the friction resistance to do work through the movable pulley block principle, the traction force is reduced, the inner steel pipe 501 can be supported out of the concrete sleeve 1 with small force, the left auxiliary fixing mechanism and the right auxiliary fixing mechanism 5 which are welded in the middle outside the inner steel pipe 501 can prevent the inner steel pipe 501 from deviating and contacting with the inner wall of the concrete sleeve 1 to increase the friction force, and the spatial position of the inner steel pipe 501 in the sleeve is also fixed.
The concrete casing 1 in the equipment is placed, the track 2 is internally paved, the wheel shaft of the trolley wheel of the moving vehicle 4 is pushed into the groove of the track 2, the inner steel pipe 501 is placed on the moving vehicle 4, the winch 305 is used at the outlet end of the pipeline to pull the inner guide wheel 303 and the connecting plate 301 through the diagonal steel rope 304 pulley block, the inner steel pipe 501 is carried out of the concrete casing 1, and then the winch 305 in the equipment is started to run for use.
A construction process for a large-caliber concrete sleeve inner steel pipe to pass through a construction platform is shown in figure 5 and comprises the following steps:
step 1, finishing the installation of the concrete sleeve 1, finishing the treatment of the inner seam, and having the condition of installing the inner steel pipe 501;
step 2, arranging the rails 2 in the range of 30 degrees at the bottom inside the concrete sleeve 1, wherein the rails are formed by installing 2 pieces of angle steel of 45 mm multiplied by 5mm in a sectional mode along the axial direction of the pipeline, and the space between the rails is 38cm; the tracks are welded by angle steels of 40 multiplied by 4mm at a distance of 50cm. The contact surface of the steel pipe and the steel pipe adopts transport trolleys, 3 transport trolleys are placed under each section of steel pipe, and each transport trolley consists of four travelling wheels and an 8# channel steel framework (560 mm multiplied by 500mm multiplied by 80 mm);
step 3, welding the inner steel pipes 501 and respectively placing the inner steel pipes 501 outside the concrete sleeve 1 for construction, wherein the inner steel pipes 501 are provided with a plurality of sections, 2/3 of the first section of the inner steel pipe is placed on the track moving vehicle 4 in the concrete sleeve 1, and then the welding construction of the first section of the inner steel pipe and the following section of the inner steel pipe is started;
step 4, after the welding of the first section of inner steel pipe and the second section of inner steel pipe is finished, pulling the two sections of inner steel pipes to enable the second section of inner steel pipe to move to the initial position, then installing and welding a third section of inner steel pipe, after the third section of inner steel pipe is welded and checked to be qualified, pulling the three sections of inner steel pipes to enable the third section of inner steel pipe to move to the initial position, and so on until the first section of inner steel pipe moves from one end to the other end in the concrete sleeve 1;
when the inner steel pipe 501 is welded, tack welding is firstly carried out, and at least three positions are respectively arranged at the upper, lower, left and right sides of the periphery of the connector; when the interface welding seam is subjected to multi-layer welding, the welding leading and arc extinguishing positions of each layer of surfacing welding in the welding seam are not overlapped, the first layer of the welding seam is concave, and the root part of the welding seam is completely welded; the middle layers are required to completely combine two welded edges, the last layer is required to completely fill the welding line, and the transition from the welding line to the base metal is ensured to be smooth.
After the inner steel pipe 501 is installed at the designed position, the inner steel pipe 501, the moving vehicle 4 and the track 2 are welded into a whole by electric welding, and the inner steel pipe 501 is guaranteed not to displace due to dynamic load.
And 5, finishing the installation of the inner steel pipe 501, detecting each welding line to be qualified, checking and accepting the inner steel pipe 501, sealing and plugging the gap between the two ends of the inner steel pipe 501 and the concrete sleeve 1 by adopting bricking, and then injecting cement paste.
The strength of 360-degree annular cement mortar in the reinforced concrete casing is M20, commercial concrete is adopted, a concrete mixer truck is directly adopted from a concrete mixing plant to transport to the site, and then a mortar pump is adopted to fill the cement mortar in the reinforced concrete casing in a layered and graded manner by utilizing perforated steel pipes pre-embedded on two sides of the track in advance until the reinforced concrete casing is full.
The steel pipes with the two joints are constructed in a welding mode, the height of the steel pipe joint is measured before welding, the steel pipes are ensured to be positioned on the same slope surface after welding, meanwhile, the center position of a pipeline is fixed, the center of the pipeline is kept on the same horizontal line, and the smooth connection of the pipeline is ensured without a break angle; the material of the welding rod is required to be consistent with the performance of the base metal, so that welding can be performed.
The invention can shorten the construction period, ensure the working efficiency and reduce the engineering cost and the safety risk. During construction of the crossing sleeve, the welded steel pipe is placed on the conveying device in the sleeve wall through the inlet end and is pulled by the winch at the outlet end, and the steel pipe is pulled in place under the action of the pulley block overcoming the friction resistance, so that the pipeline installation work at the port is completed.
The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention, and such modifications and adaptations are intended to be within the scope of the invention.

Claims (9)

1. The utility model provides a steel pipe passes through construction platform in heavy-calibre concrete sleeve for steel pipe (501) in concrete sleeve (1) installation, its characterized in that: including track (2), operating device (3) and locomotive (4), wherein:
the track (2) is arranged in the concrete casing (1), the moving vehicle (4) is arranged on the track (2), and the moving vehicle (4) is used for moving the inner steel pipe (501); the operating mechanism (3) is used for operating the moving vehicle (4) to move.
2. The large-caliber concrete sleeve inner steel pipe crossing construction platform according to claim 1, characterized in that: the auxiliary fixing mechanism (5) is used for achieving auxiliary fixing between the inner steel pipe (501) and the concrete sleeve (1).
3. The large-caliber concrete sleeve steel pipe crossing construction platform according to claim 2, which is characterized in that: the operating mechanism (3) comprises a connecting plate (301), a guide wheel (303), a steel rope (304) and a winch (305), wherein a built-in hole (302) is formed in the front face of the connecting plate (301), and the built-in hole (302) penetrates through the connecting plate (301); the guide wheel (303) is arranged at the bottom of the connecting plate (301), one end of the steel rope (304) is fixedly connected with the winch (305), and the other end of the steel rope is fixedly connected with the built-in hole (302).
4. The large-caliber concrete sleeve inner steel pipe crossing construction platform according to claim 3, wherein: the auxiliary fixing mechanism (5) comprises a supporting column (502), a wheel frame (503) and a rotating wheel (504), one end of the supporting column (502) is fixedly connected with the inner steel pipe (501), the other end of the supporting column is fixedly connected with the wheel frame (503), the rotating wheel (504) is rotatably installed on the wheel frame (503), and the rotating wheel (504) is in contact with the inner wall of the concrete sleeve (1).
5. The large-caliber concrete sleeve steel pipe crossing construction platform according to claim 4, which is characterized in that: a movable pulley block is arranged between the winch (305) and the built-in hole (302), and the steel rope (304) bypasses the movable pulley block and is respectively and fixedly connected with the winch (305) and the built-in hole (302).
6. The large-caliber concrete sleeve inner steel pipe crossing construction platform according to claim 5, wherein: the rail (2) is a U-shaped grooved rail.
7. A construction process for passing the steel pipe in the large-caliber concrete sleeve through a construction platform according to any one of claims 1 to 6 is characterized by comprising the following steps of:
step 1, finishing the installation of the concrete sleeve (1), finishing the treatment of an inner seam, and having the condition of installing an inner steel pipe (501);
step 2, arranging a track (2) in the range of 30 degrees of the bottom inside the concrete sleeve (1), wherein the track is formed by angle steel in a sectional mode along the axial direction of a pipeline;
step 3, welding the inner steel pipes (501) and respectively placing the inner steel pipes outside the concrete sleeve (1) for construction, wherein the inner steel pipes (501) have a plurality of sections, 2/3 of the first section of the inner steel pipe is placed on the rail trolley (4) in the concrete sleeve (1), and then the welding construction of the first section of the inner steel pipe and the following section of the inner steel pipe is started;
step 4, after the welding of the first section of inner steel pipe and the second section of inner steel pipe is finished, pulling the two sections of inner steel pipes to enable the second section of inner steel pipe to move to the initial position, then installing and welding a third section of inner steel pipe, after the third section of inner steel pipe is welded and checked to be qualified, pulling the three sections of inner steel pipes to enable the third section of inner steel pipe to move to the initial position, and so on until the first section of inner steel pipe moves from one end to the other end in the concrete sleeve (1);
and 5, finishing the installation of the inner steel pipe (501), detecting each welding line to be qualified, checking and accepting the inner steel pipe (501), sealing and plugging a gap between two ends of the inner steel pipe (501) and the concrete sleeve (1) by adopting brick laying, and then injecting cement paste.
8. The construction process according to claim 7, wherein: when the inner steel pipe (501) is welded, tack welding is firstly carried out, and at least three positions are respectively arranged at the upper, lower, left and right sides of the periphery of the connector; when the interface welding seam is subjected to multi-layer welding, the welding leading and arc extinguishing positions of each layer of surfacing welding in the welding seam are not overlapped, the first layer of the welding seam is concave, and the root part of the welding seam is completely welded; the middle layer is required to completely combine two welded edges, the last layer is required to completely fill the welding line, and the transition from the welding line to the base metal is ensured to be smooth.
9. The construction process according to claim 8, wherein: after the inner steel pipe (501) is arranged at the designed position, the inner steel pipe (501), the moving vehicle (4) and the track (2) are welded into a whole by electric welding, and the inner steel pipe (501) is guaranteed not to displace due to dynamic load.
CN202211061158.0A 2022-09-01 2022-09-01 Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve Pending CN115560127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211061158.0A CN115560127A (en) 2022-09-01 2022-09-01 Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211061158.0A CN115560127A (en) 2022-09-01 2022-09-01 Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve

Publications (1)

Publication Number Publication Date
CN115560127A true CN115560127A (en) 2023-01-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211061158.0A Pending CN115560127A (en) 2022-09-01 2022-09-01 Construction platform and construction process for passing through steel pipe in large-diameter concrete sleeve

Country Status (1)

Country Link
CN (1) CN115560127A (en)

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