CN113090816A - Self-anchored internally-penetrated nodular cast iron pipe installation method - Google Patents
Self-anchored internally-penetrated nodular cast iron pipe installation method Download PDFInfo
- Publication number
- CN113090816A CN113090816A CN202110512524.9A CN202110512524A CN113090816A CN 113090816 A CN113090816 A CN 113090816A CN 202110512524 A CN202110512524 A CN 202110512524A CN 113090816 A CN113090816 A CN 113090816A
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- Prior art keywords
- self
- pipe
- installation method
- anchoring
- anchored
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Classifications
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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
-
- 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
Abstract
The invention discloses a self-anchored internally-penetrated nodular cast iron pipe installation method, which comprises the following steps: firstly, positioning a steel rail; step two, laying steel rails; step three, installing a self-anchored pipe interface; step four, installing the hoop and the self-anchoring pipe main body (4); step five, penetrating into a power structure; sixthly, jacking operation; and step seven, grouting. The invention has the following beneficial effects: the pipeline joint is automatically anchored, the sealing performance is good, and the safety in the construction process is greatly improved; the method comprises the steps of firstly jacking a steel protective sleeve, then internally penetrating a self-anchored ductile cast iron pipe, filling slurry in the middle, and having good corrosion resistance.
Description
Technical Field
The invention relates to a self-anchored internally-penetrated nodular cast iron pipe installation method, and belongs to the technical field of internally-penetrated nodular cast iron pipe installation.
Background
The pipe-jacking construction is a non-excavation construction method, and is a pipeline burying construction technology without excavation or with few excavations. The pipe jacking construction is that the friction force between the pipeline and the surrounding soil is overcome by means of the jacking force generated by jacking equipment in a working pit, the pipeline is jacked into the soil according to the designed gradient, and earthwork is transported away. In the construction of the large-diameter long-distance water conveying pipeline, if the PE pipe is adopted for construction, the number of the joints is large, and the construction difficulty is high.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for installing a self-anchored inner-penetrating nodular cast iron pipe, which has high safety and good corrosion resistance.
The invention is realized by the following scheme: a self-anchored internally-penetrated nodular cast iron pipe installation method comprises the following steps:
firstly, positioning a steel rail;
step two, laying steel rails;
step three, installing a self-anchored pipe interface;
step four, installing the hoop and the self-anchoring pipe main body;
step five, penetrating into a power structure;
sixthly, jacking operation;
and step seven, grouting.
And step two, the original pipe jacking working well is utilized, a light rail is processed to serve as a track of the self-anchoring pipe main body, the steel rail is welded with the outer sleeve steel pipe along a set line, and two linear steel rails are laid.
The self-anchoring pipe joint is connected to the end of the self-anchoring pipe main body, the self-anchoring pipe is composed of the self-anchoring pipe joint and the self-anchoring pipe main body, a sealing rubber ring is arranged in the self-anchoring pipe joint, a supporting rubber ring is arranged on the front side of the sealing rubber ring, the sealing rubber ring and the supporting rubber ring are both of annular structures, a plurality of protrusions are arranged on the supporting rubber ring, the protrusions surround the supporting rubber ring into a circle, clamping grooves of back stop blocks are sleeved on the protrusions of the supporting rubber ring, the back stop blocks correspond to the protrusions one by one, a front stop block is clamped between every two adjacent back stop blocks, and the front stop blocks are connected with the back stop blocks in an occlusion mode.
And in the fourth step, the installation hoop is arranged on the self-anchoring pipe main body and is divided into an upper part and a lower part, connecting blocks are arranged at the end parts of the upper part and the lower part, the hoops of the upper part and the lower part are sleeved on the self-anchoring pipe main body and locked through the connecting blocks, the lower end of the hoop is connected with two pulleys, the self-anchoring pipe main body is placed into the outer sleeve steel pipe, and the pulleys are placed on the steel rail in the outer sleeve steel pipe.
The self-anchoring pipe main body adopts a sectional installation method, the self-anchoring pipe main body of the next self-anchoring pipe is in self-anchoring connection with the self-anchoring pipe interface of the previous self-anchoring pipe, and the installed self-anchoring pipes are placed on the steel rail one by one, so that the pulley can normally roll on the steel rail.
The anchor ear is arranged on the self-anchoring pipe main body, the number of the anchor ears in the first section is 2, the number of the anchor ears in the subsequent section is only 1, and the anchor ears are arranged at 1/5 positions which are used for measuring the length of the pipeline inwards from two ends of the anchor pipe main body.
The staple bolt with place the cushion between the anchor pipe main part certainly, the inner wall from the anchor pipe main part is equipped with the one deck inside lining.
And fifthly, a jack is used as penetrating power of the inner penetrating pipe, and guide rails and rollers are used as installation positioning guide devices to jack the inner penetrating pipe one by one.
And the grouting in the seventh step is a method for grouting between the self-anchored pipe and the outer sleeve steel pipe and simultaneously grouting inwards at two ends.
Before grout is injected, the end is plugged by the brick masonry, grouting is started after the strength is achieved, after segmental grouting is completed each time, pipes are prevented from being plugged by flushing, grouting is performed for the first time until the pipelines float, grouting is performed for the second time until the pipes are filled, and grouting is performed for the third time until the pipe tops are filled.
The invention has the beneficial effects that:
1. the self-anchored internally-penetrated nodular cast iron pipe installation method has the advantages that the pipeline joint is automatically anchored, the sealing performance is good, and the safety in the construction process is greatly improved;
2. the invention relates to a method for installing a self-anchored internally-penetrating nodular cast iron pipe, which comprises the steps of firstly jacking a steel protective sleeve, then internally penetrating the self-anchored nodular cast iron pipe, filling slurry in the middle of the self-anchored internally-penetrating nodular cast iron pipe, and having good corrosion resistance.
Drawings
Fig. 1 is a schematic view of the installation front view structure of the present invention.
Fig. 2 is a side view schematically illustrating the self-anchoring connection structure of the present invention.
In the figure: the steel rail-mounted anchor pipe comprises a steel rail 1, a self-anchor pipe joint 2, an installation hoop 3, a self-anchor pipe main body 4, a pulley 5, a sealing rubber ring 6, a supporting rubber ring 7, a protrusion 8, a rear stop block 9, a clamping groove 10, a front stop block 11, a connecting block 12, an outer sleeve steel pipe 13, a rubber cushion 14 and a lining 15.
Detailed Description
The invention is further described below with reference to fig. 1-2, without limiting the scope of the invention.
In which like parts are designated by like reference numerals. It is noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component, and the drawings are in greatly simplified form and employ non-precise ratios, merely for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention.
In the following description, for purposes of clarity, not all features of an actual implementation are described, well-known functions or constructions are not described in detail since they would obscure the invention with unnecessary detail, it being understood that in the development of any actual embodiment, numerous implementation details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, changing from one implementation to another, and it being recognized that such development effort might be complex and time consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
A self-anchored internally-penetrated nodular cast iron pipe installation method comprises the following steps:
firstly, positioning a steel rail 1, namely utilizing a laser theodolite to cooperate with a total station to release the axis of the steel rail inside an outer sleeve steel pipe 13 according to the schematic diagram of a pulley 5 of an anchor ear 3;
step two, laying a steel rail 1; the method comprises the steps of processing a 12kg/m specification light rail as a track of a self-anchoring pipe main body 4 by utilizing an original pipe-jacking working well, welding a steel rail 1 with an outer sleeve steel pipe 13 along a set line, laying two linear steel rails 1, laying the steel rails 1 to a back rest position in a well, and welding and fixing the steel rails above the pipe-jacking track by adopting 16a I-shaped steel for jacking and laying the self-anchoring pipe main body 4.
Step three, installing the self-anchoring pipe interface 2, comprising the following processes: firstly, installing a sealing rubber ring; secondly, mounting a supporting rubber ring; thirdly, mounting the two rear check blocks 9, sleeving the clamping grooves 10 of the rear check blocks 9 on the bulges 8 of the supporting rubber ring 7 during mounting, aligning the centers of the rear check blocks 9 and the bulges 8, and then extruding the rear check blocks 9 by using a mounting tool; correspondingly placing a front stop block 11 into a gap between two rear stop blocks 9, then loosening an installation tool, alternately installing the remaining rear stop blocks 9 and the front stop blocks 11, wherein the front stop blocks 11 and the rear stop blocks 9 are engaged, the stop blocks which do not support the bottom should be suspended from the bottom of the ring blocking bin, and the stop blocks can be knocked to corresponding positions by using a rubber hammer until all installation is finished; fifthly, lubricating the end part of the socket and the working surface of the sealing rubber ring by using lubricating grease,
step four, installing the anchor ear 3 and the self-anchoring pipe main body 4, installing the anchor ear 3 on the self-anchoring pipe, installing 2 anchor ears 3 on the first section of the pipeline, installing 1 anchor ear 3 on the subsequent pipeline, installing the anchor ear 3 at 1/5 which takes the length of the pipeline from the two ends of the pipeline inwards, and placing the installed self-anchoring pipes on the steel rail 1 one by adopting a sectional installation method so that the pulley 5 can normally roll on the steel rail 1;
fifthly, a penetration power structure is adopted, a jack is used as penetration power of the inner penetration pipe, the steel rail 1 and the pulley 5 are used as installation positioning guide devices to be jacked one by one, the pipeline is prevented from rolling when not anchored during jacking, 25a I-steel is adopted at the joint of the steel rail 1 and the DN3200 steel sleeve, the length of the I-steel is 4 meters, and the I-steel is placed perpendicular to the track;
sixthly, jacking operation;
and seventhly, grouting, namely grouting the self-anchored pipe by adopting a method of simultaneously grouting inwards at two ends, arranging grouting pipes in sections, plugging the end by using a brick masonry before grouting, grouting after the strength is reached, and flushing to prevent pipe blockage after each section of grouting is finished. Plugging the pipeline for the first time to the floating height of the pipeline (calculated as that the bottom of the inner pipe penetrating pipe is 72cm upwards), plugging the end head into the inner pipe penetrating pipe after the grout is injected to the floating height and the grout is initially set, continuing grouting into the pipe for the second time, plugging the end head to the top of the pipe after the grout is initially set, and continuing grouting to the top of the pipe for filling.
Although the invention has been described and illustrated in some detail, it should be understood that various modifications may be made to the described embodiments or equivalents may be substituted, as will be apparent to those skilled in the art, without departing from the spirit of the invention.
Claims (10)
1. A self-anchored internally-penetrated nodular cast iron pipe installation method is characterized by comprising the following steps: which comprises the following steps:
firstly, positioning a steel rail (1);
step two, laying a steel rail (1);
step three, installing a self-anchoring pipe interface (2);
fourthly, installing the anchor ear (3) and the self-anchoring pipe main body (4);
step five, penetrating into a power structure;
sixthly, jacking operation;
and step seven, grouting.
2. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 1, wherein the installation method comprises the following steps: step one utilizes laser theodolite cooperation total powerstation to emit the rail axis in outer cover steel pipe (13) according to the schematic diagram of pulley (5) of staple bolt (3), step two utilizes original push pipe working well, uses the track of light rail processing as self-anchoring pipe main part (4), welds rail (1) along established circuit and overcoat steel pipe (13), lays out two sharp rail (1).
3. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 1, wherein the installation method comprises the following steps: the self-anchoring pipe interface (2) is connected with the end part of the self-anchoring pipe main body (4), the self-anchoring pipe is composed of the self-anchoring pipe interface (2) and the self-anchoring pipe main body (4), a sealing rubber ring (6) is arranged in the self-anchoring pipe joint (2), a supporting rubber ring (7) is arranged on the front side of the sealing rubber ring (6), the sealing rubber ring (6) and the supporting rubber ring (7) are both in an annular structure, a plurality of bulges (8) are arranged on the supporting rubber ring (7), a circle is formed by the bulges (8) along the supporting rubber ring (7), the clamping groove (10) of the rear stop block (9) is sleeved on the bulges (8) of the supporting rubber ring (7), backstop (9) with arch (8) one-to-one, two adjacent a backstop (9) between the card go into a positive stop (11), positive stop (11) with backstop (9) interlock is connected.
4. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 1, wherein the installation method comprises the following steps: install staple bolt (3) in step four on from anchor pipe main part (4), staple bolt (3) fall into two parts from top to bottom, and the tip of two parts from top to bottom all is equipped with connecting block (12), and staple bolt (3) cover of two parts from top to bottom are in from anchor pipe main part (4), and pass through connecting block (12) locking, two pulleys (5) are connected to the lower extreme of staple bolt (3), put into overcoat steel pipe (13) from anchor pipe main part (4) in, place on rail (1) in overcoat steel pipe (13) pulley (5).
5. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 4, wherein the installation method comprises the following steps: the self-anchoring pipe main body (4) adopts a sectional installation method, the self-anchoring pipe main body (4) of the next self-anchoring pipe is in self-anchoring connection with the self-anchoring pipe interface (2) of the previous self-anchoring pipe, and the installed self-anchoring pipes are placed on the steel rail (1) one by one, so that the pulley (5) can normally roll on the steel rail (1).
6. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 4, wherein the installation method comprises the following steps: will staple bolt (3) are installed on from anchor pipe main part (4), and 2 are installed from anchor pipe main part (4) in first festival staple bolt (3), and follow-up only install 1 from anchor pipe main part (4) staple bolt (3), staple bolt (3) install in follow 1/5 department of getting pipeline length from anchor pipe main part (4) both ends internal measurement.
7. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 4, wherein the installation method comprises the following steps: staple bolt (3) with place cushion (14) between anchor pipe main part (4), the inner wall from anchor pipe main part (4) is equipped with one deck inside lining (15).
8. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 1, wherein the installation method comprises the following steps: and fifthly, a jack is used as penetrating power of the inner penetrating pipe, and guide rails and rollers are used as installation positioning guide devices to jack the inner penetrating pipe one by one.
9. The installation method of the self-anchored inner-penetrating nodular cast iron pipe according to claim 1, wherein the installation method comprises the following steps: and the grouting in the seventh step is a method of grouting between the self-anchored pipe and the outer sleeved steel pipe (13) and simultaneously grouting inwards at two ends.
10. The installation method of the self-anchored internally-penetrated ductile cast iron pipe as claimed in claim 9, wherein: before grout is injected, the end is plugged by the brick masonry, grouting is started after the strength is achieved, after segmental grouting is completed each time, pipes are prevented from being plugged by flushing, grouting is performed for the first time until the pipelines float, grouting is performed for the second time until the pipes are filled, and grouting is performed for the third time until the pipe tops are filled.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110512524.9A CN113090816A (en) | 2021-05-11 | 2021-05-11 | Self-anchored internally-penetrated nodular cast iron pipe installation method |
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| CN202110512524.9A CN113090816A (en) | 2021-05-11 | 2021-05-11 | Self-anchored internally-penetrated nodular cast iron pipe installation method |
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| CN113090816A true CN113090816A (en) | 2021-07-09 |
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| CN202110512524.9A Pending CN113090816A (en) | 2021-05-11 | 2021-05-11 | Self-anchored internally-penetrated nodular cast iron pipe installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114087421A (en) * | 2021-09-24 | 2022-02-25 | 华能南通燃机发电有限公司 | Construction method for laying pressure pipeline in box culvert |
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Application publication date: 20210709 |