CN101818829B - Construction method of cross-valley overhead pipeline - Google Patents
Construction method of cross-valley overhead pipeline Download PDFInfo
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- CN101818829B CN101818829B CN2010101203823A CN201010120382A CN101818829B CN 101818829 B CN101818829 B CN 101818829B CN 2010101203823 A CN2010101203823 A CN 2010101203823A CN 201010120382 A CN201010120382 A CN 201010120382A CN 101818829 B CN101818829 B CN 101818829B
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Abstract
The invention discloses a construction method of a cross-valley overhead pipeline, which can realize fast construction progress and low cost. The method comprises the following steps: 1) setting up a pipeline support in the initial position of a valley; 2) mounting a pulley device on the pipeline support which is well set up, then using a hoisting winch for erecting and hoisting the previous pipeline support by taking the pulley device as the guide, and fixing a support foundation after arranging in place; 3) arranging a connecting member between the pipeline supports for forming a working bridge; and 4) using a traction winch for implementing the horizontal traction of the pipeline on the working bridge. The method has the advantages of realizing fast construction speed, greatly reducing the project cycle, further saving the expenses of the field-leveling measure and the measure of setting up a scaffold and reducing the cost. The trial proves that the method can greatly shorten the duration, save the construction cost by about 40%, further reduce the construction risk and obtaining certain social and economic benefits.
Description
Technical field
The present invention relates to stride the built on stilts hoisting technology in mountain valley, relate in particular to construction method of cross-valley overhead pipeline.
Background technique
Because the industrial project production flow line needs to introduce from the base, discharge, and is subjected to the physical relief condition restriction in the pipeline erection process, the necessary condition of traditional mechanical lifting operation often is difficult to satisfy.Such as, construct at cross-valley overhead pipeline, as adopt traditional mechanical hoisting method, be subjected to the physical relief condition restriction, large-scale hanging device can't enter the job site, it is flat and set up measure such as scaffold to carry out the field, not only long in time limit, cost is high, and the potential safety hazard that exists pipeline high-altitude group that, welding etc. is brought.
Summary of the invention
Technical problem solved by the invention provides the construction method of cross-valley overhead pipeline that a kind of construction speed is fast, cost is low.
The technological scheme that solves the problems of the technologies described above is: construction method of cross-valley overhead pipeline may further comprise the steps:
1) sets up support of pipelines at the section start in mountain valley;
2) on the support of pipelines of setting up pulley gear is installed, using then and promoting winch serves as that guiding implements to pull upright lifting to last support of pipelines with described pulley gear, and back in place is fixed its bracket basis;
3) connector element is set and forms service bridge between support of pipelines;
4) use rack winch on described service bridge, to implement the horizontally tracting of pipeline.
Wherein, when each support of pipelines is implemented to pull upright lifting, in order to keep the stability of support of pipelines in hoisting process, improve safety coefficient, be preferably in when using the lifting winch that support of pipelines is implemented to pull upright lifting, use that firm winch is counter holds this support of pipelines, and control described lifting winch and the firm synchronous folding and unfolding of winch.Promote winch and the firm synchronous folding and unfolding of winch by control, can guarantee the slow and stable lifting of movable end of support of pipelines, thereby guarantee safety.
In addition, for convenience of horizontally tracting to pipeline, in step 4), can earlier pipeline be divided at least two sections, first segment pipe is lifted to the section start of service bridge and horizontally tracting one segment distance forward, and then will back one segment pipe lift to the section start of service bridge and with the end welding of pipeline the last period, pipeline after will welding subsequently is horizontally tracting one segment distance forward again, lifts next segment pipe afterwards again to the section start of service bridge and repeat aforesaid operations, finishes until the pipeline whole Transporting.This mode concentrates on the section start of service bridge with welding job, has eliminated a large amount of pipelines high-altitude group to the potential safety hazard that, welding is brought, and has guaranteed construction quality and safety.
Moreover, the present invention also can install portal frame earlier on the platform of support of pipelines before to the traction of pipeline carrying out horizontal, and the inboard of described portal frame has the spacing space that holds pipeline.Like this, both can prevent to be offset in the pipe level distraction procedure, can also provide protection for the operation of personnel on rack platform by portal frame.
Because pipe head certain sagging might occur and can not enter smoothly on the platform of next support of pipelines by ten minutes when the pipeline carrying out horizontal draw, therefore the present invention also can be positioned on the described portal frame pipeline above suspension centre is set, the steel cable of rack winch is connected with the front end of pipeline, serves as that guiding is connected with the front end of pipeline with the steel cable of regulating device with described suspension centre; When using rack winch that the pipeline carrying out horizontal is drawn, the front end height of pipeline is controlled by regulating device.The steel cable of regulating device serves as that guiding can be implemented upwards to promote to the front end of pipeline with described suspension centre, avoids pipe head sagging, reaches the purpose of smooth transition.
The invention has the beneficial effects as follows: among the present invention, the upright lifting of pulling of last support of pipelines relies on the support of pipelines set up for supporting and guiding, support of pipelines is that rotary hinge rotates with its bracket basis when pulling upright the lifting, finish setting up of this support of pipelines thereby pull again its bracket basis fix after upright, and then begin again next support of pipelines is implemented to pull upright the lifting.As seen, this method speed of application is fast, has shortened construction period greatly, and can save a flat measure and set up the spending of scaffold measure, reduces cost.Confirm that through on probation the duration of the present invention shortens greatly, it is nearly 40% that construction cost is saved, and reduced construction risk, obtained certain social benefit and economic benefit.
Description of drawings
Fig. 1 strides the facade layout plan of mountain valley support of pipelines for the present invention.
The schematic representation of Fig. 2 when support of pipelines being implemented to pull upright lifting among the present invention.
Fig. 3 is for implementing the schematic representation of pipe level traction on service bridge among the present invention.
Fig. 4 on the platform of support of pipelines, install among the present invention portal frame schematic representation.
Fig. 5 is the left view of Fig. 4.
Be labeled as among the figure: mountain valley 1, section start 2, bracket basis 3, connector element 4, service bridge 5, pipeline 6, portal frame 7, spacing space 701, suspension centre 8, pulley gear 9, MEDIA FLOW to 10, support of pipelines J0, J1, J2, J3, J4, J5, J6, J7, J8, lifting winch Y1, firm winch Y2, rack winch Y3, steel cable S1, S2, S3, S4.
Embodiment
The present invention is described further below in conjunction with accompanying drawing.
Shown in Fig. 1～3, construction method of cross-valley overhead pipeline of the present invention may further comprise the steps:
1) 1 section start 2 is set up support of pipelines J0 in the mountain valley;
2) pulley gear 9 is installed on the support of pipelines J0 that sets up, using and promoting winch Y1 serves as that guiding implements to pull upright lifting to last support of pipelines J4 with described pulley gear 9, and back in place is fixed its bracket basis 3;
3) connector element 4 is set and forms service bridge 5 between support of pipelines;
4) use rack winch Y3 on described service bridge 5, to implement the horizontally tracting of pipeline 6.
As Fig. 1, " section start 2 " of step 1) refers to be positioned at the position that 1 one side slope roads, mountain valley begin.The selection of the section start 2 in mountain valley 1 is best to be as the criterion to 10 direction with MEDIA FLOW, promptly with cross-valley overhead pipeline set up finish after, support of pipelines J0 is set up as section start 2 in the initial position in 1 one side slope roads, the pairing mountain valley of the input end of the medium in the pipeline 6.Purpose is to utilize better the design gradient of natural grade and pipeline 6, conveniently each support of pipelines is advanced lifting successively by Pin.
As Fig. 1, to 10 direction, make support of pipelines be followed successively by J1, J2, J3, J4, J5, J6, J7, J8 (is 8 to be example with the support of pipelines number) according to MEDIA FLOW.Wherein, because the making of section start support of pipelines is had relatively high expectations, therefore it is prefabricated support of pipelines J1, J2 and J3 can be concentrated on the processing place, and then be grouping at the construction field (site) form integrally-built support of pipelines J0 after, utilize crane lifting and be built up in the section start 2 in mountain valley 1.
After support of pipelines J0 sets up and finishes, just can be according to step 2) last support of pipelines J4 is implemented to pull upright lifting.As shown in Figure 2, basic skills is that pulley gear 9 is installed on the support of pipelines J0 that sets up, using then and promoting winch Y1 serves as that guiding implements to pull upright lifting to last support of pipelines J4 with described pulley gear 9, even support of pipelines J4 is that rotary hinge rotates with its bracket basis 3, again its bracket basis 3 is fixed after in place.The position that is provided with of each bracket basis 3 requires to determine according to the cross-valley overhead pipeline working design, and carries out the civil engineering of each bracket basis 3 at the initial stage of building.Consider that support of pipelines pulls the needs of upright lifting, when the civil engineering of bracket basis 3, pre-buried anchor point should be set, and before lifting base and the bracket basis to support of pipelines handle, prevent that support of pipelines is offset in the lifting process.When support of pipelines J4 reaches vertical substantially, can use artificial fine-tuning mode instead and carry out support of pipelines in place in conjunction with winch, reach designing requirement.Then the base plate of support of pipelines J4 and the pre-embedded steel slab in the bracket basis 3 are welded fixing, the protection of being in the milk again at last.
Step 2) in, when support of pipelines J4 is implemented to pull upright lifting, in order to keep the stability of support of pipelines J4 in hoisting process, improve safety coefficient, be preferably in when using lifting winch Y1 that support of pipelines J4 is implemented to pull upright lifting, use that firm winch Y2 is counter to hold this support of pipelines J4, and control described lifting winch Y1 and the firm synchronous folding and unfolding of winch Y2.Promote winch Y1 and the firm synchronous folding and unfolding of winch Y2 by control, can guarantee the slow and stable lifting of movable end of support of pipelines J4, thereby guarantee safety.
Step 2) can repeat.After support of pipelines J4 sets up, just can pulley gear 9 be installed at the support of pipelines J4 that sets up, using then and promoting winch serves as that guiding implements to pull upright lifting to last support of pipelines J5 with this pulley gear 9, method is the same.Like this, just can realize to 10 remaining support of pipelines being pulled upright lifting lifting by Pin by MEDIA FLOW.
Then, according to step 3), connector element 4 just can be set between support of pipelines form service bridge 5.As shown in Figure 1, connector element 4 can adopt support connecting tube, and its mounting type can adopt and interim suspension centre is set on the platform of support of pipelines and utilizes winch to lift and weld in place.
At last, according to step 4), just can use rack winch Y3 on described service bridge 5, to implement the horizontally tracting of pipeline 6.As shown in Figure 3.
Should be pointed out that the installation of described lifting winch Y1 and firm winch Y2 can bracket basis 3 as its anchor point, the convenient installation that promotes winch Y1 and firm winch Y2.
As further improvement to described step 4), in step 4), earlier pipeline 6 is divided at least two sections, first segment pipe 6 is lifted to the section start of service bridge 5 and horizontally tracting one segment distance forward, and then will back one segment pipe 6 lift to the section start of service bridge 5 and with pipeline 6 end welding the last period, pipeline 6 after will welding subsequently is horizontally tracting one segment distance forward again, lift next segment pipe 6 afterwards again to the section start of service bridge 5 and repeat aforesaid operations, finish until pipeline 6 whole Transporting.This mode is applicable to the long pipeline 6 that is difficult to whole Transporting of length, and this mode concentrates on the section start of service bridge 5 with welding job, has eliminated a large amount of pipelines high-altitude group to the potential safety hazard that, welding is brought, and has guaranteed construction quality and safety.
Moreover, shown in Fig. 4～5, the present invention also can install portal frame 7 earlier on the platform of support of pipelines before step 4) is to the traction of pipeline 6 carrying out horizontal, and the inboard of described portal frame 7 has the spacing space 701 that holds pipeline 6.Like this, both can prevent to be offset in the pipe level distraction procedure, can also provide protection for the operation of personnel on rack platform by portal frame 7.
As shown in Figure 4, because pipeline 6 terminations certain sagging might occur and can not enter smoothly on the platform of next support of pipelines by ten minutes when pipeline 6 carrying out horizontal draws, therefore the present invention also can be positioned on the described portal frame 7 pipeline 6 above suspension centre 8 is set, the steel cable S3 of rack winch Y3 is connected with the front end of pipeline 6, serves as that guiding is connected with the front end of pipeline 6 with the steel cable S4 of regulating device with described suspension centre 8; When using rack winch Y3 that pipeline 6 carrying out horizontal are drawn, the front end height of pipeline 6 is controlled by regulating device.The steel cable S4 of regulating device serves as that guiding can be implemented upwards to promote to the front end of pipeline 6 with described suspension centre 8, avoids pipe head sagging, thereby reaches the purpose of smooth transition.
Claims (5)
1. construction method of cross-valley overhead pipeline may further comprise the steps:
1) section start of (1) (2) is set up support of pipelines (J0) in the mountain valley;
2) at the support of pipelines of setting up (J0) pulley gear (9) go up to be installed, using then and promoting winch (Y1) serve as that guiding implements to pull upright lifting to last support of pipelines (J4) with described pulley gear (9), its bracket basis (3) is fixed after in place;
3) connector element (4) is set and forms service bridge (5) between support of pipelines;
4) use rack winch (Y3) to go up the horizontally tracting of implementing pipeline (6) at described service bridge (5).
2. construction method of cross-valley overhead pipeline as claimed in claim 1, it is characterized in that: when support of pipelines (J4) being implemented to pull upright lifting by promoting winch (Y1), use that firm winch (Y2) is counter holds this support of pipelines (J4), and control described lifting winch (Y1) and the folding and unfolding synchronously of firm winch (Y2).
3. construction method of cross-valley overhead pipeline as claimed in claim 1, it is characterized in that: in step 4), earlier pipeline (6) is divided at least two sections, first segment pipe (6) is lifted to the section start of service bridge (5) and horizontally tracting one segment distance forward, and then will back one segment pipe (6) lift to the section start of service bridge (5) and with the end welding of pipeline the last period (6), pipeline (6) after will welding subsequently is horizontally tracting one segment distance forward again, lift next segment pipe (6) afterwards to the section start of service bridge (5) and repeat aforesaid operations, finish until pipeline (6) whole Transporting.
4. as claim 1,2 or 3 described construction method of cross-valley overhead pipeline, it is characterized in that: before the traction of pipeline (6) carrying out horizontal, earlier portal frame (7) is installed on the platform of support of pipelines, the inboard of described portal frame (7) has the spacing space (701) that holds pipeline (6).
5. construction method of cross-valley overhead pipeline as claimed in claim 4, it is characterized in that: the top that is positioned at pipeline (6) on described portal frame (7) is provided with suspension centre (8), the steel cable (S3) of rack winch (Y3) is connected with the front end of pipeline (6), serves as that guiding is connected with the front end of pipeline (6) with the steel cable (S4) of regulating device with described suspension centre (8); When using rack winch (Y3) that pipeline (6) carrying out horizontal is drawn, the front end height of pipeline (6) is controlled by regulating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101203823A CN101818829B (en) | 2010-03-09 | 2010-03-09 | Construction method of cross-valley overhead pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101203823A CN101818829B (en) | 2010-03-09 | 2010-03-09 | Construction method of cross-valley overhead pipeline |
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| CN101818829A CN101818829A (en) | 2010-09-01 |
| CN101818829B true CN101818829B (en) | 2011-07-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587288B (en) * | 2012-04-06 | 2015-02-11 | 武船重型工程股份有限公司 | Method for lifting steel box girder segments of cable-stayed bridge |
| CN106869035B (en) * | 2017-03-24 | 2018-10-09 | 中石化江苏油建工程有限公司 | Across the installation method of valley conduit bridge |
| CN107269928A (en) * | 2017-05-16 | 2017-10-20 | 广西建工集团第五建筑工程有限责任公司 | A kind of construction method of large-scale Pipe installing arranged side by side |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6361250B1 (en) * | 1998-01-09 | 2002-03-26 | Coflexip | Device and method for installing pipes at very great depths |
| CN101054791A (en) * | 2007-05-09 | 2007-10-17 | 华东交通大学 | Joist type cable arch bridge structure and its construction method |
| WO2008059118A1 (en) * | 2006-07-12 | 2008-05-22 | Eole Overseas Company Limited | Device and method for rapidly dismantling the rotor and the nacelle from a wind turbine mast, and wind turbine provided with such device |
| CN101372231A (en) * | 2008-06-30 | 2009-02-25 | 中国第十七冶金建设有限公司 | Technique for drawing, transporting and lifting ground rail type cable railway equipment |
-
2010
- 2010-03-09 CN CN2010101203823A patent/CN101818829B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6361250B1 (en) * | 1998-01-09 | 2002-03-26 | Coflexip | Device and method for installing pipes at very great depths |
| WO2008059118A1 (en) * | 2006-07-12 | 2008-05-22 | Eole Overseas Company Limited | Device and method for rapidly dismantling the rotor and the nacelle from a wind turbine mast, and wind turbine provided with such device |
| CN101054791A (en) * | 2007-05-09 | 2007-10-17 | 华东交通大学 | Joist type cable arch bridge structure and its construction method |
| CN101372231A (en) * | 2008-06-30 | 2009-02-25 | 中国第十七冶金建设有限公司 | Technique for drawing, transporting and lifting ground rail type cable railway equipment |
Non-Patent Citations (1)
| Title |
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| 庞伯贤.长输管道悬索跨越施工方法.《科学咨询导报》.2006,(第20期),233-234. * |
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