CN112984214A - Large-diameter PCCP (prestressed concrete cylinder pipe) water pipeline closure section framework and pipe distribution installation method - Google Patents

Large-diameter PCCP (prestressed concrete cylinder pipe) water pipeline closure section framework and pipe distribution installation method Download PDF

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Publication number
CN112984214A
CN112984214A CN202110163128.XA CN202110163128A CN112984214A CN 112984214 A CN112984214 A CN 112984214A CN 202110163128 A CN202110163128 A CN 202110163128A CN 112984214 A CN112984214 A CN 112984214A
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China
Prior art keywords
pipeline
pipe
end pipeline
rear end
track
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CN202110163128.XA
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Chinese (zh)
Inventor
李建生
侯方
王淼
车刚
徐永军
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Xinjiang Guo Tong Pipeline Co ltd
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Xinjiang Guo Tong Pipeline Co ltd
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Priority to CN202110163128.XA priority Critical patent/CN112984214A/en
Publication of CN112984214A publication Critical patent/CN112984214A/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
    • 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
    • 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
    • F16L1/09—Accessories therefor, e.g. anchors for bringing two tubular members closer to each other

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sewage (AREA)

Abstract

The application relates to a large-diameter PCCP water conveying pipeline closure section installation structure and an installation method, in particular to a large-diameter PCCP water conveying pipeline closure section framework and a pipe distribution installation method; the device comprises a folding opening, a front end pipeline, a rear end pipeline, a front end track, a rear end track and an accompanying road; the front end pipeline and the rear end pipeline are both linear pipelines, the front end pipeline and the rear end pipeline are arranged in an included angle, and a gap is reserved at the intersection of the front end pipeline and the rear end pipeline, so that a folding opening is formed. Due to the implementation of the technical scheme, the turning point of the pipeline is selected to be the folding port, the deflection track bypassing the port of the rear-end pipeline is formed at the port of the front-end track by adopting an extension or deflection method, the accompanying road and the descending slope are matched, the pipe carrier can be poured into the descending slope, and the portal frame is unloaded to install the complete front-end pipeline; because the folding pipe is manufactured in sections, the folding installation can be completed only by a small-tonnage truck crane during folding, and the construction cost is saved.

Description

Large-diameter PCCP (prestressed concrete cylinder pipe) water pipeline closure section framework and pipe distribution installation method
Technical Field
The application relates to a large-diameter PCCP water conveying pipeline closure section installation structure and an installation method, in particular to a large-diameter PCCP water conveying pipeline closure section framework and a pipe distribution installation method.
Background
In order to improve the engineering installation progress of the large-diameter PCCP water conveying pipeline, the same pipeline is usually installed by adopting a plurality of working faces at the same time, a closure pipe (steel pipe fitting) is arranged at the joint of the adjacent working faces, when the portal frame is adopted for installation, the height, the width and the length of the closure part of the portal frame are influenced, the number of the PCCPs installed at the tube distribution of the closure part is limited, and a large-tonnage crane is required to be rented for PCCP installation and steel pipe fitting closure during closure.
The large-caliber PCCP is single-section and weighs about 50 tons (taking DN3400 as an example), is influenced by the geographical environment of an installation working face, and when the large-caliber PCCP is installed by adopting the crawler crane, the safety is considered, at least more than 280 tons are needed, the rent is about 30 ten thousand per month, the entrance fee is about 10 ten thousand per time, and the cost is higher. In order to save costs, a gantry is usually used for installation.
The pipeline closure section is usually selected from straight line sections, the portal frame is influenced by the position during installation, the reserved length of the closure part is large, so that 2-3 sections of PCCPs cannot be installed in a pipe arrangement mode according to a pipe arrangement meter, a large-tonnage crane needs to be rented independently during closure, and the construction cost is increased.
Disclosure of Invention
The application aims to provide a large-caliber PCCP water conveying pipeline closure section framework capable of reducing construction cost and a pipe distribution installation method.
One of the technical solutions of the present application is implemented as follows: the large-caliber PCCP water conveying pipeline closure section framework comprises a closure opening, a front end pipeline, a rear end pipeline, a front end rail, a rear end rail and an accompanying road; the front end pipeline and the rear end pipeline are both linear pipelines, the front end pipeline and the rear end pipeline are arranged in an included angle, and a gap is reserved at the junction of the front end pipeline and the rear end pipeline so as to form a folding port; the front end tracks are distributed on two sides of the front end pipeline along the axis of the front end pipeline, and the rear end tracks are distributed on two sides of the rear end pipeline along the axis of the rear end pipeline; the back of a bending angle formed by the front end pipeline and the rear end pipeline is provided with an accompanying road corresponding to the rear end pipeline; one end of the front end track, which is positioned at the folding port, is connected with a deflection track which deflects to one side of the accompanying road and can bypass the pipeline port at the rear end; the accompanying road is connected with a descending slope which can descend the height and is connected to the deflecting track.
Furthermore, the bending angle formed by the front end pipeline and the rear end pipeline is 177-100 degrees.
Furthermore, when the bending angle formed by the front end pipeline and the rear end pipeline is less than or equal to 140 degrees, the deflection track is in a whole-segment type, and the deflection track is connected with the front end track and arranged in an included angle mode.
Furthermore, when the bending angle formed by the front end pipeline and the rear end pipeline is larger than 140 degrees, the deflection tracks are in a sectional type, and the deflection tracks of adjacent sections are arranged in an included angle.
Furthermore, the accompanying path and the rear end pipeline are distributed in parallel, the front end pipeline comprises a plurality of sections of PCCP pipes which are connected in a butt joint mode, and the distance between the accompanying path and the rear end pipeline is not less than twice the length of one section of PCCP pipe.
The folding pipe comprises an elbow and a length-adjusting straight pipe, wherein the elbow comprises a left straight pipe, a left butt joint pipe, a right butt joint pipe and a right straight pipe; the inner diameters of the left straight pipe, the left butt joint pipe, the right butt joint pipe and the right straight pipe are all consistent, and the outer diameters of the left straight pipe, the left butt joint pipe, the right butt joint pipe and the right straight pipe are all consistent; the section of the left butt joint pipe along the central plane is in a right trapezoid shape, and the port of the left butt joint pipe corresponding to the right-angled waist of the right trapezoid shape is fixedly connected with the left straight pipe through girth welding; the structure of the right butt joint pipe is bilaterally symmetrical to that of the left butt joint pipe, and the port of the left butt joint pipe corresponding to the oblique waist of the right trapezoid is connected with the port of the right butt joint pipe corresponding to the oblique waist of the right trapezoid in a spot welding manner.
The second technical scheme of the application is realized as follows: the large-caliber PCCP water conveying pipeline folding section pipe distribution installation method comprises the following steps: the first step is as follows: selecting the position of a folded pipe in the pipeline, and taking the inflection point of the pipeline as a folded section; the second step is that: reserving a folding opening for installing a folding pipe; the third step: paving a front end track forwards along the reserved folding opening, and paving a rear end track backwards; the fourth step: erecting a portal frame through a rear-end rail, and sequentially installing PCCP pipes towards or away from the direction of the closure opening to form a rear-end pipeline; the fifth step: erecting a portal frame through a front end rail, sequentially installing PCCP pipes towards the direction of a reserved folding opening, and reserving the last to two sections of PCCP pipe joints; and a sixth step: at the closure, the front end track is lengthened and deviated, so that the formed deflection track bypasses the rear end pipeline port; the seventh step: building an accompanying road corresponding to the rear-end pipeline on the back of one side of a bending angle formed by the front-end pipeline and the rear-end pipeline, and then building a descending slope connecting the accompanying road and the deflection track; the pipe transporting vehicle is poured into a descending slope through a accompanying road so as to enter a deflection track, and one to two sections of PCCP pipes reserved finally are installed on the gantry unloading pipe to form a front-end pipeline; eighth step: and (5) installing the folding pipe at the folding opening by using a truck crane for folding.
Furthermore, when the bending angle formed by the front end pipeline and the rear end pipeline is larger than 100 degrees and smaller than or equal to 140 degrees, the deflection track is in a whole-segment type, and the deflection track is connected with the front end track and arranged in an included angle mode.
Furthermore, when the bending angle formed by the front end pipeline and the rear end pipeline is larger than 140 degrees and smaller than 177 degrees, the deflection tracks are in a sectional type, and the deflection tracks of adjacent sections are arranged in an included angle.
Due to the implementation of the technical scheme, the turning point of the pipeline is selected to be the folding port, the deflection track bypassing the port of the rear-end pipeline is formed at the port of the front-end track by adopting an extension or deflection method, the accompanying road and the descending slope are matched, the pipe carrier can be poured into the descending slope, and the portal frame is unloaded to install the complete front-end pipeline; because the folding pipe is manufactured in sections, the folding installation can be completed only by a small-tonnage truck crane during folding, and the construction cost is saved.
Drawings
The specific structure of the application is given by the following figures and examples:
FIG. 1 is a schematic structural diagram of the present application;
fig. 2 is a schematic view of the structure of a bent pipe portion in a folded pipe according to the present application.
Legend: 1. the device comprises a left straight pipe, 2 a left butt joint pipe, 3 a right butt joint pipe, 4 a right straight pipe, 5 a folding port, 6 a front end pipeline, 7 a rear end pipeline, 8 a front end rail, 9 a rear end rail, 10 a accompanying road, 11 a deflection rail, 12 a descending slope straight pipe, 13 an extension straight pipe, and A a bending angle formed by the front end pipeline and the rear end pipeline.
Detailed Description
The present application is not limited to the following examples, and specific implementations may be determined according to the technical solutions and practical situations of the present application.
Embodiment 1, as shown in fig. 1 to 2, a large-caliber PCCP water pipeline closure structure includes a closure opening 5, a front end pipeline 6, a rear end pipeline 7, a front end rail 8, a rear end rail 9 and a accompanying road 10; the front end pipeline 6 and the rear end pipeline 7 are both linear pipelines, the front end pipeline 6 and the rear end pipeline 7 are arranged in an included angle, and a gap is reserved at the intersection of the front end pipeline 6 and the rear end pipeline 7 so as to form a folding opening 5; the front end rails 8 are distributed on two sides of the front end pipeline 6 along the axis of the front end pipeline 6, and the rear end rails 9 are distributed on two sides of the rear end pipeline 7 along the axis of the rear end pipeline 7; the back of a bending angle A formed by the front end pipeline and the rear end pipeline is provided with an accompanying road 10 corresponding to the rear end pipeline 7; one end of the front end track 8, which is positioned at the folding port 5, is connected with a deflection track 11 which is deflected to one side of the accompanying road 10 and can bypass the port of the rear end pipeline 7; the accompanying road 10 is connected to a descending slope 12 which can lower the level and is connected to the deflecting rail 11.
According to the method, a folding port 5 is arranged at the corner of the pipeline, a portal frame is erected through a rear-end track 9, and a complete rear-end pipeline 7 is normally installed through the portal frame; erecting a portal frame through a front end track 8, sequentially installing PCCP pipes towards the reserved folding port 5 until the last one to two PCCP pipe joints, wherein at the moment, due to angle limitation, a pipe transporting vehicle installed on the PCCP pipes cannot enter the track, and the front end track 8 is extended and deflected to form a deflection track 11 capable of bypassing the port of a rear end pipeline 7; the pipe transporting vehicle is poured into a descending slope 12 through a accompanying road 10 so as to enter the middle part of a deflection track 11, and one to two sections of PCCP pipes reserved finally are installed on a gantry unloading pipe to form a complete front-end pipeline 6.
The folded pipe is about 10 tons in weight and is manufactured in sections; therefore, the folding installation can be finished only by a small-tonnage truck crane, and the construction cost is saved.
As shown in fig. 1, a bending angle a formed by the front end pipeline and the rear end pipeline refers to an angle at which the front end pipeline 6 and the rear end pipeline 7 are respectively extended and connected to each other and then bent, that is, a bending angle of the folded pipe.
As shown in fig. 1, the bending angle a formed by the front end pipeline and the rear end pipeline is 177 to 100 degrees.
As shown in fig. 1, when the bending angle a formed by the front end pipeline and the rear end pipeline is less than or equal to 140 degrees, the deflecting rail 11 is of a whole segment type, and the deflecting rail 11 is connected with the front end rail 8 and arranged at an included angle.
At the moment, the front end pipeline 6 and the rear end pipeline 7 are bent greatly, so that a larger space is provided for the deflection track 11 to leave the rear end pipeline 7; the angle can be adjusted only when the deflection track 11 is connected with the front end track 8 in a butt joint mode.
As shown in fig. 1, when the bending angle a formed by the front end pipeline and the rear end pipeline is greater than 140 degrees, the deflection tracks 11 are in a sectional type, and the deflection tracks 11 of adjacent sections are arranged in an included angle.
At the moment, the front end pipeline 6 and the rear end pipeline 7 are bent little, and no space is available for the deflection track 11 to leave the rear end pipeline 7; the deflection track 11 needs to be adjusted by a large angle and deflected; in order to prevent the portal frame from being capable of smoothly and stably travelling on the track, the deflection track 11 is made into a sectional type, the length of each section is 1-2 meters, and therefore the portal frame can smoothly and safely travel through a structural mode of multi-section adjustment and small-angle adjustment of each section.
As shown in fig. 1, the accompanying path 10 is arranged in parallel with the rear pipeline 7, the front pipeline 6 comprises a plurality of PCCP pipes connected in a butt joint mode, and the distance between the accompanying path 10 and the rear pipeline 7 is not less than twice the length of one PCCP pipe.
The pipe transportation vehicle can be poured into the descending slope 12 to enter the deflection track 11. The accompanying road 10 can be extended continuously along the pipeline direction at the front end, so that the pipe carrier can conveniently move.
As shown in fig. 2, the folding pipe comprises an elbow and a length-adjustable straight pipe 13, wherein the elbow comprises a left straight pipe 1, a left butt joint pipe 2, a right butt joint pipe 3 and a right straight pipe 4 which are connected in sequence; the inner diameters of the left straight pipe 1, the left butt joint pipe 2, the right butt joint pipe 3 and the right straight pipe 4 are all consistent, and the outer diameters of the left straight pipe 1, the left butt joint pipe 2, the right butt joint pipe 3 and the right straight pipe 4 are all consistent; the section of the left butt joint pipe 2 along the central plane is a right trapezoid, and the port of the left butt joint pipe 2 corresponding to the right-angled waist of the right trapezoid is fixedly connected with the left straight pipe 1 through girth welding; the structure of the right butt joint pipe 3 is bilaterally symmetrical to that of the left butt joint pipe 2, and the port of the left butt joint pipe 2 corresponding to the oblique waist of the right trapezoid is connected with the port of the right butt joint pipe 3 corresponding to the oblique waist of the right trapezoid in a spot welding manner.
The section of the left butt joint pipe 22 along the central plane is in a right trapezoid shape, so that the axes of the left straight pipe 11 and the left butt joint pipe 22 can be ensured to be overlapped; the structure of the right butt joint pipe 33 is bilaterally symmetrical to that of the left butt joint pipe 22; the axes of the right straight pipe 43 and the right butt joint pipe 34 can be ensured to be coincident; therefore, the included angle between the axis of the left butt joint pipe 22 and the axis of the right butt joint pipe 33 is the angle of the elbow to be measured. The spot welding connection of the left butt joint pipe 22 and the right butt joint pipe 33 can realize the advanced prejudgment and effective control of the angle in the manufacturing process of the pipe fitting with the angle; avoiding the angular deviation and the material loss. The length-adjusting straight pipe 13 is measured, cut and finally welded on site according to the actual length.
Embodiment 2, a method for installing a large-caliber PCCP water conveying pipeline in a pipe arrangement manner at a closure section comprises the following steps: selecting the position of a folded pipe in the pipeline, and taking the inflection point of the pipeline as a folded section; the second step is that: reserving a folding opening 5 for installing a folding pipe; the third step: a front end rail 8 is laid forwards along the reserved folding opening 5, and a rear end rail 9 is laid backwards; the fourth step: erecting a portal frame through a rear end rail 9, and sequentially installing PCCP pipes towards or away from the direction of the folding opening 5 to form a rear end pipeline 7; the fifth step: erecting a portal frame through a front end rail 8, sequentially installing PCCP pipes towards the reserved folding opening 5 direction, and reserving the last to two sections of PCCP pipe joints; and a sixth step: at the folding port 5, the front end track 8 is lengthened and shifted, so that the formed deflection track 11 bypasses the port of the rear end pipeline 7; the seventh step: on the back of one side of a bending angle A formed by the front end pipeline and the rear end pipeline, an accompanying road 10 corresponding to the rear end pipeline 7 is built, and then a descending slope 12 connecting the accompanying road 10 and a deflection track 11 is built; the pipe transporting vehicle is poured into a descending slope 12 through a accompanying road 10 so as to enter a deflection track 11, and one to two sections of PCCP pipes reserved finally are installed on a gantry unloading pipe to form a front-end pipeline 6; eighth step: and (5) installing the folding pipe on the folding opening 5 by using a truck crane for folding.
By adopting the method, the PCCP required by the calandria can be smoothly installed, the folding position of the steel pipe fitting is reserved, and the pipeline folding can be realized by hiring a small-tonnage truck crane during folding, so that the construction cost is saved; the method is tested and applied in the installation of PCCP (prestressed concrete cylinder pipe) pipelines of national major hydraulic engineering water pipeline engineering, and has a good effect. Meanwhile, the method is suitable for mounting and folding pipes made of other materials and specifications, has wide application range and can be further popularized and applied.
As shown in fig. 1 to 2, when the bending angle a formed by the front end pipeline and the rear end pipeline is greater than 100 degrees and less than or equal to 140 degrees, the deflecting rail 11 is a whole segment type, and the deflecting rail 11 is connected with the front end rail 8 and arranged at an included angle.
As shown in fig. 1 to 2, when the bending angle a formed by the front end pipeline and the rear end pipeline is greater than 140 degrees and less than 177 degrees, the deflecting rail 11 is in a sectional type, and the deflecting rails 11 of adjacent sections are arranged at an included angle.
In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used only to indicate relative positional relationships between relevant portions, and do not limit absolute positions of the relevant portions.
The technical characteristics form the embodiment of the application, the embodiment has strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the needs of different situations.

Claims (9)

1. A large-diameter PCCP water pipeline closure section framework is characterized in that: comprises a folding port, a front end pipeline, a rear end pipeline, a front end track, a rear end track and a accompanying road; the front end pipeline and the rear end pipeline are both linear pipelines, the front end pipeline and the rear end pipeline are arranged in an included angle, and a gap is reserved at the junction of the front end pipeline and the rear end pipeline so as to form a folding port; the front end tracks are distributed on two sides of the front end pipeline along the axis of the front end pipeline, and the rear end tracks are distributed on two sides of the rear end pipeline along the axis of the rear end pipeline; the back of a bending angle formed by the front end pipeline and the rear end pipeline is provided with an accompanying road corresponding to the rear end pipeline; one end of the front end track, which is positioned at the folding port, is connected with a deflection track which deflects to one side of the accompanying road and can bypass the pipeline port at the rear end; the accompanying road is connected with a descending slope which can descend the height and is connected to the deflecting track.
2. The large-caliber PCCP water conveying pipeline closure section framework as claimed in claim 1, wherein: the bending angle formed by the front end pipeline and the rear end pipeline is 177-100 degrees.
3. The large-caliber PCCP water conveying pipeline closure section framework as claimed in claim 2, wherein: when the bending angle formed by the front end pipeline and the rear end pipeline is less than or equal to 140 degrees, the deflection track is in a whole-segment type, and the deflection track is connected with the front end track and arranged in an included angle mode.
4. The large-caliber PCCP water conveying pipeline closure section framework as claimed in claim 2, wherein: when the bending angle formed by the front end pipeline and the rear end pipeline is larger than 140 degrees, the deflection tracks are of sectional type, and the deflection tracks of adjacent sections are arranged in an included angle.
5. The large-caliber PCCP water conveying pipeline closure segment framework as claimed in claim 1, 2, 3 or 4, wherein: the accompanying path and the rear end pipeline are distributed in parallel, the front end pipeline comprises a plurality of sections of PCCP pipes which are in butt joint, and the distance between the accompanying path and the rear end pipeline is not less than twice of the length of one section of PCCP pipe.
6. The large-caliber PCCP water conveying pipeline closure segment framework as claimed in claim 1, 2, 3 or 4, wherein: the folding pipe comprises an elbow and a length-adjusting straight pipe, wherein the elbow comprises a left straight pipe, a left butt joint pipe, a right butt joint pipe and a right straight pipe; the inner diameters of the left straight pipe, the left butt joint pipe, the right butt joint pipe and the right straight pipe are all consistent, and the outer diameters of the left straight pipe, the left butt joint pipe, the right butt joint pipe and the right straight pipe are all consistent; the section of the left butt joint pipe along the central plane is in a right trapezoid shape, and the port of the left butt joint pipe corresponding to the right-angled waist of the right trapezoid shape is fixedly connected with the left straight pipe through girth welding; the structure of the right butt joint pipe is bilaterally symmetrical to that of the left butt joint pipe, and the port of the left butt joint pipe corresponding to the oblique waist of the right trapezoid is connected with the port of the right butt joint pipe corresponding to the oblique waist of the right trapezoid in a spot welding manner.
7. A large-caliber PCCP water conveying pipeline closure section pipe distribution installation method is characterized by comprising the following steps:
the first step is as follows: selecting the position of a folded pipe in the pipeline, and taking the inflection point of the pipeline as a folded section;
the second step is that: reserving a folding opening for installing a folding pipe;
the third step: paving a front end track forwards along the reserved folding opening, and paving a rear end track backwards;
the fourth step: erecting a portal frame through a rear-end rail, and sequentially installing PCCP pipes towards or away from the direction of the closure opening to form a rear-end pipeline;
the fifth step: erecting a portal frame through a front end rail, sequentially installing PCCP pipes towards the direction of a reserved folding opening, and reserving the last to two sections of PCCP pipe joints;
and a sixth step: at the closure, the front end track is lengthened and deviated, so that the formed deflection track bypasses the rear end pipeline port;
the seventh step: building an accompanying road corresponding to the rear-end pipeline on the back of one side of a bending angle formed by the front-end pipeline and the rear-end pipeline, and then building a descending slope connecting the accompanying road and the deflection track; the pipe transporting vehicle is poured into a descending slope through a accompanying road so as to enter a deflection track, and one to two sections of PCCP pipes reserved finally are installed on the gantry unloading pipe to form a front-end pipeline;
eighth step: and (5) installing the folding pipe at the folding opening by using a truck crane for folding.
8. The pipe distribution installation method for the closure section of the large-caliber PCCP water conveying pipeline according to claim 7, wherein the method comprises the following steps: when the bending angle formed by the front end pipeline and the rear end pipeline is larger than 100 degrees and smaller than or equal to 140 degrees, the deflection track is in a whole-section type, and the deflection track is connected with the front end track and arranged in an included angle mode.
9. The pipe distribution installation method for the closure section of the large-caliber PCCP water conveying pipeline according to claim 7, wherein the method comprises the following steps: when the bending angle formed by the front end pipeline and the rear end pipeline is larger than 140 degrees and smaller than 177 degrees, the deflection tracks are of a sectional type, and the deflection tracks of adjacent sections are arranged in an included angle.
CN202110163128.XA 2021-02-05 2021-02-05 Large-diameter PCCP (prestressed concrete cylinder pipe) water pipeline closure section framework and pipe distribution installation method Pending CN112984214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110163128.XA CN112984214A (en) 2021-02-05 2021-02-05 Large-diameter PCCP (prestressed concrete cylinder pipe) water pipeline closure section framework and pipe distribution installation method

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Application Number Priority Date Filing Date Title
CN202110163128.XA CN112984214A (en) 2021-02-05 2021-02-05 Large-diameter PCCP (prestressed concrete cylinder pipe) water pipeline closure section framework and pipe distribution installation method

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CN112984214A true CN112984214A (en) 2021-06-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113502878A (en) * 2021-07-20 2021-10-15 重庆昕晟环保科技有限公司 Direct pressure-superposed secondary water supply equipment
CN114606968A (en) * 2022-03-28 2022-06-10 北京住总集团有限责任公司 Folding and butt-jointing device and method for mark section structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113502878A (en) * 2021-07-20 2021-10-15 重庆昕晟环保科技有限公司 Direct pressure-superposed secondary water supply equipment
CN114606968A (en) * 2022-03-28 2022-06-10 北京住总集团有限责任公司 Folding and butt-jointing device and method for mark section structure
CN114606968B (en) * 2022-03-28 2023-10-03 北京住总集团有限责任公司 Closure butt joint device and method for punctuation structure

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