CN103557366B - A kind of submarine pipeline protection device in shallow sea reclamation area - Google Patents
A kind of submarine pipeline protection device in shallow sea reclamation area Download PDFInfo
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- CN103557366B CN103557366B CN201310578343.1A CN201310578343A CN103557366B CN 103557366 B CN103557366 B CN 103557366B CN 201310578343 A CN201310578343 A CN 201310578343A CN 103557366 B CN103557366 B CN 103557366B
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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
- F16L1/12—Laying or reclaiming pipes on or under water
- F16L1/123—Devices for the protection of pipes under water
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Abstract
The present invention relates to a kind of submarine pipeline protection device in shallow sea reclamation area, it is characterized in that: mainly comprise soldier piles, taper pile, crossbeam, longeron and cover plate, wherein soldier piles are distributed in the both sides of the submerged pipeline in hydraulic reclamation district, and the one-sided of submerged pipeline is at least provided with row's soldier piles; In hydraulic reclamation district with firm body for starting point is cascade layout along pipeline direction, and be increase step by step; Outermost soldier piles are provided with group of taper pile at a certain distance; Crossbeam is equipped with by fastening piece in the vertical pipeline direction of the upper top of soldier piles; Longeron is equipped with along submerged pipeline direction by fastening piece in described beam surface upper; Safeguard structure is taked to make the load on pipeline top be step-like classification transition, thus to make outside construction area inside former surface load and construction area completely that between hydraulic reclamation load, pipeline institute bearing load can even transition, effectively guarantee that pipeline large bending deflection does not occur and breaks through ultimate stress and cause pipeline damage.
Description
Technical field
The invention belongs to submerged pipeline resist technology field, particularly relate to a kind of submarine pipeline protection device in shallow sea reclamation area.
Background technique
Wei Haizao road is that coastal area is alleviated land supply and need contradiction, expanded the effective means in social survival and development space, has huge Social and economic [email protected] sometimes Wei Haizao road can be gone up it and the environment of underground causes immeasurable impact peripherally.In reclaiming land around sea process; often there will be the situations such as planning some submerged pipelines of region overlay such as oil-gas pipeline; submerged pipeline carries the important use of the economic people's livelihood of relation usually, therefore must carry out special protection, to guarantee pipeline safety to it in reclaiming land around sea construction.
At the rigid construction of the protection submerged pipeline that the hydro-structure such as embankment, breakwater is arranged across submerged pipeline, be called rigid body, such as large cylinder device.The submerged pipeline laid within the scope of land reclamation, when pipeline is entered in hydraulic reclamation district by off-lying sea by rigid body, due to hydraulic reclamation, the load large size of conduit upper is increased, simultaneously because pipeline is very long, pipeline is always in the state that Local Loads increases, Local Loads is constant, in hydraulic reclamation district barged-in fill produce on cover the stress that weight can directly make tube wall be subject to and increase, the increase of Local Loads causes the pipeline of infall to produce deflection deformation, and what generation was additional in the duct draws, pressure stress.If when the combination of ducted additional stress and pipeline original stress (as the stress that temperature and interior pressure cause) in operational conditions exceedes the yield stress of pipe material, pipeline will destroy.
Given this, we introduce by carrying out load classification transition theory at region of stress concentration, thus after hydraulic reclamation completes, reduce the stress influence to pipeline, guarantee that pipeline is not damaged.In order to reach the object of load classification transition, we devise classification load transitional structure form, by the form that different section piles with different top mark is high, make the pipeline upper load classification in hydraulic reclamation process be passed to the following soil layer of submerged pipeline.
Summary of the invention
The present invention provides the submarine pipeline protection device in shallow sea reclamation area that a kind of structure is simple, reasonable in design, easy to install, effectively protect submerged pipeline for solving in known technology the technical problem that exists.
The technological scheme that the present invention takes for the technical problem existed in solution known technology is:
A kind of submarine pipeline protection device in shallow sea reclamation area, is characterized in that: mainly comprise soldier piles, taper pile, crossbeam, longeron and cover plate,
Wherein soldier piles are distributed in the both sides of the submerged pipeline in hydraulic reclamation district, and the one-sided of submerged pipeline is at least provided with row's soldier piles;
In hydraulic reclamation district with firm body for starting point is cascade layout along pipeline direction, and be increase step by step;
Outermost soldier piles are provided with group of taper pile at a certain distance;
Crossbeam is equipped with by fastening piece in the vertical pipeline direction of the upper top of soldier piles;
Longeron is equipped with along submerged pipeline direction by fastening piece in described beam surface upper;
Cover plate is equipped with by fastening piece at the longeron upper surface of each ladder surface.
The present invention can also adopt following technical measures:
The angle α of the vertical section of the radial direction of described taper pile and submerged pipeline is 30 ° ~ 50 °; The angle β of taper pile and the vertical section of submerged pipeline axial direction is 40 ° ~ 50 °.
Described fastening piece adopts harrow nail, self tapping screw or binding structural member.
Truss is installed with by fastening piece between described adjacent soldier piles.
Diagonal brace is provided with between described staking out and adjacent crossbeam.
Described soldier piles, taper pile, crossbeam, longeron and cover plate all adopt wooden structures.
The advantage that the present invention has and good effect are: because the above-mentioned safeguard structure of employing makes the load on pipeline top be step-like classification transition by the present invention; thus to make outside construction area inside former surface load and construction area completely that between hydraulic reclamation load, pipeline institute bearing load can even transition; effectively guarantee that pipeline large bending deflection breakthrough ultimate stress does not occur and causes pipeline damage; namely this method decreases employing and protects input a large amount of human and material resources completely; additionally reducing the waste of its construction plant and the energy, is a kind of not only environmental protection but also economic structure.The present invention constructs convenient, and operator guards end face is in intertidal zone, avoids underwater construction as far as possible, all superstructure monomer assemblings, and multibreak forms continuous productive process, can make full use of between tide the time; Ask low to labor and materials are confidential, material channel is wide, and ship machine is slightly transformed and just can be constructed, setup time before minimizing work, workable.Economic benefit is mainly manifested in project organization and achieves in easy process conditions, under workable method of construction, submerged pipeline is formed to the protection of effective and safe.Full wooden structures reduces deadweight and weakens rigidity, can ensure the safety coefficient after work progress and completion, little on pipeline impact, improves Security.
Accompanying drawing explanation
The load assignment schematic diagram of the unshielded structure of Tu1Shi hydraulic reclamation district pipeline;
The load assignment schematic diagram of Tu2Shi hydraulic reclamation district gut line load classification transition;
Fig. 3 is the structural representation of first order classification changeover portion;
Fig. 4 is I-I sectional drawing of Fig. 3;
Fig. 5 is A portion enlarged view in Fig. 4;
Fig. 6 is II-II sectional drawing of Fig. 3;
In figure: 1, soldier piles; 2, taper pile; 3, crossbeam; 4, longeron; 5, cover plate; 6, truss; 7, diagonal brace; 8, submerged pipeline; 9, rigid body; 10, fastening piece.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 to Fig. 6, a kind of submarine pipeline protection device in shallow sea reclamation area, mainly comprise soldier piles 1, taper pile 2, crossbeam 3, longeron 4 and cover plate 5,
Wherein soldier piles 1 are distributed in the both sides of the submerged pipeline 8 in hydraulic reclamation district, and the one-sided of submerged pipeline is at least provided with row's soldier piles 1; The row of soldier piles is according to selecting according to actual conditions, and row its stability more is stronger.
Be starting point with firm body 9 in hydraulic reclamation district be cascade layout along pipeline direction, and be increase step by step, for ease of illustrating, specific to close rigid body 9 is first order classification changeover portion, and the number of step is carried out rationalization according to the length of actual classification changeover portion and selected;
On outermost soldier piles 1, each certain distance is provided with one group of taper pile 2;
Crossbeam 3 is equipped with by fastening piece in the vertical pipeline direction of the upper top of soldier piles 1;
Longeron 4 is equipped with along submerged pipeline direction by fastening piece at described crossbeam 3 upper surface;
Cover plate 5 is equipped with by fastening piece at longeron 4 upper surface of each ladder surface.
The present invention can also adopt following technical measures:
Described taper pile 2 is 30 ° ~ 50 ° with the angle α of the vertical section of the radial direction of submerged pipeline 8; Taper pile 2 is 40 ° ~ 50 ° with the angle β of the vertical section in Submarine Pipeline 8 bobbin thread direction.
Described fastening piece 10 adopts harrow nail, self tapping screw or binding structural member.
Truss 6 is installed with by fastening piece between described adjacent soldier piles 1.
Diagonal brace 7 is provided with between described soldier piles 1 and adjacent crossbeam 3.
The mentality of designing of above-mentioned protective gear is as follows:
(1), according to reclaiming land around sea planning absolute altitude calculate hydraulic reclamation load, determine the size q of hydraulic reclamation load, determine the load q without hydraulic reclamation load Submarine Pipeline line segment according to the buried depth of submerged pipeline disembarkation section
0;
(2), in conjunction with theory of beam on elastic and numerical computation method the distortion of submerged pipeline under hydraulic reclamation load q and stress situation are calculated, determine the Security of submerged pipeline;
(3) if the combined stress that draws of above-mentioned calculated stress is excessive, the load classification transition taking corresponding operator guards that pipeline is born within the scope of certain length submerged pipeline increases, and makes load q classification transition, namely applies q in the first classification section
1, the second classification section applies q
2... n-th classification section applies q
n, last protection section is applied to total load q, by the total length of calculating load difference amount of deformation determination load changeover portion and the length of every grade of section; Point progression of load changeover portion is determined by the distortion of submerged pipeline under hydraulic reclamation load q and corresponding classification load and Stress calculation;
(4), in conjunction with elastic foundation beam method and numerical computation method the submerged pipeline after load classification transition is out of shape and combined stree calculating accordingly, judges the Security of submerged pipeline;
(5), according to the load classification over current protection structure that the interpretation of result of above-mentioned calculating may solve the problem;
(6), load classification over current protection structure type and structure is selected according to actual conditions;
(7), concrete method of construction is formulated according to above-mentioned selected load classification over current protection structure type and structure.
Described soldier piles, taper pile, crossbeam, longeron and cover plate all adopt wooden structures, and full wooden structures reduces deadweight and weakens rigidity, can ensure the safety coefficient after work progress and completion, little on submerged pipeline impact, improve Security.
Further illustrate for Boxi pipelines protection below, in Boxi pipelines region, soil property is softer, and intensity index is low, and during operation at sea, difficulty of construction is large.In land reclamation Boxi pipelines current design manual of protective structures, intend the scheme adopting timber safeguard structure, scheme sets two row's timbers respectively in pipeline both sides, a pair taper pile is set at a certain distance, in order to bear the horizontal loading produced in hydraulic reclamation process, and ensure that overall structure is stablized, top cover plate adopts plank.
Design protection structure has following main points:
(1) classification load over current protection model is met
(2) construction feasibility is met
(3) engineering economy is met
Barged-in fill load more than cover plate can be delivered to the soil layer of below submerged pipeline by this operator guards by timber, install, with different cover plate end face absolute altitude segmentations, thus reach the requirement of the barged-in fill load classification transition that protection model pipeline bears along pipeline.Specifically for economic zone three phase 14 district's Boxi pipelines design protection structure; this engineering use structure specific targets are: the 400m that the border that crosses from hydraulic reclamation district and pipeline is formed in construction area protects section as protection domain; double soldier piles are arranged in every side, pipeline both sides; protection section is provided with three grades as Fig. 2; stake footpath 20cm; pile spacing 2.3m in two rows; one-sided inside and outside pile spacing 1.2m; be 0.6m along the longitudinal pile spacing of axis; every 4.8m both sides, axial direction arranges that taper pile is in order to bear the horizontal loading produced in hydraulic reclamation process, and ensure that overall structure is stablized.20cm*20cm lumps of wood erection crossbeam is adopted in submerged pipeline direction at the plan vertical of soldier piles, above crossbeam, along submerged pipeline direction erection 20cm*20cm lumps of wood longeron, girder space is timber design pitch, longeron top erection cover plate, cover plate adopts plank, and thickness is 5cm, be used for resisting top hydraulic reclamation load, make load pass to basis by timber.Be about the connection of 10cm round log truss with diameter between axial direction adjacent studs and guarantee stability.To unify absolute altitude be-8m at the stake end, and stake top mark is high, and to start 0 ~ 150m to starting point be+2m, and 150 ~ 300m is+2.5m, and 300 ~ 400m is+3m.Cover plate and longeron adopt self-drilling connection, and other each parts adopt harrow nail or colligation to connect, to guarantee that structural stability is reliable.
Because the present invention will adopt technique scheme; safeguard structure is taked to make the load on pipeline top be step-like classification transition; thus to make outside construction area inside former surface load and construction area completely that between hydraulic reclamation load, pipeline institute bearing load can even transition; effectively guarantee that pipeline large bending deflection breakthrough ultimate stress does not occur and causes pipeline damage; namely this method decreases employing and protects input a large amount of human and material resources completely; additionally reducing the waste of its construction plant and the energy, is a kind of not only environmental protection but also economic method.
The present invention constructs convenient in addition, and operator guards end face is in intertidal zone, avoids underwater construction as far as possible, all superstructure monomer assemblings, and multibreak forms continuous productive process, can make full use of between tide the time; Ask low to labor and materials are confidential, material channel is wide, and ship machine is slightly transformed and just can be constructed, setup time before minimizing work, workable.Economic benefit is mainly manifested in project organization and achieves in easy process conditions, under workable method of construction, submerged pipeline is formed to the protection of effective and safe.Full wooden structures reduces deadweight and weakens rigidity, can ensure the safety coefficient after work progress and completion, little on pipeline impact, improves Security.
The above is only to preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and modification, all belong in the scope of technical solution of the present invention.
Claims (6)
1. a submarine pipeline protection device in shallow sea reclamation area, is characterized in that: mainly comprise soldier piles, taper pile, crossbeam, longeron and cover plate,
Wherein soldier piles are distributed in the both sides of the submerged pipeline in hydraulic reclamation district, and the one-sided of submerged pipeline is at least provided with row's soldier piles;
In hydraulic reclamation district with firm body for starting point is cascade layout along pipeline direction, and be increase step by step;
Outermost soldier piles are provided with group of taper pile at a certain distance;
Crossbeam is equipped with by fastening piece in the vertical pipeline direction of the upper top of soldier piles;
Longeron is equipped with along submerged pipeline direction by fastening piece in described beam surface upper;
Cover plate is equipped with by fastening piece at the longeron upper surface of each ladder surface.
2. submarine pipeline protection device in shallow sea reclamation area according to claim 1, is characterized in that: the angle α of the vertical section of the radial direction of described taper pile and submerged pipeline is 30 ° ~ 50 °; The angle β of taper pile and the vertical section of submerged pipeline axial direction is 40 ° ~ 50 °.
3. submarine pipeline protection device in shallow sea reclamation area according to claim 1, is characterized in that: described fastening piece adopts harrow nail, self tapping screw or binding structural member.
4. submarine pipeline protection device in shallow sea reclamation area according to claim 1, is characterized in that: between adjacent soldier piles, be installed with truss by fastening piece.
5. submarine pipeline protection device in shallow sea reclamation area according to claim 1, is characterized in that: be provided with diagonal brace between described soldier piles and adjacent crossbeam.
6. submarine pipeline protection device in shallow sea reclamation area according to claim 1, is characterized in that: described soldier piles, taper pile, crossbeam, longeron and cover plate all adopt wooden structures.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310578343.1A CN103557366B (en) | 2013-11-15 | 2013-11-15 | A kind of submarine pipeline protection device in shallow sea reclamation area |
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| CN201310578343.1A CN103557366B (en) | 2013-11-15 | 2013-11-15 | A kind of submarine pipeline protection device in shallow sea reclamation area |
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| CN103557366A CN103557366A (en) | 2014-02-05 |
| CN103557366B true CN103557366B (en) | 2015-11-25 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081414A (en) * | 1980-08-08 | 1982-02-17 | Pilgrim Eng Dev | Pipe anchoring system |
| CN101851914A (en) * | 2010-06-09 | 2010-10-06 | 天津大学 | Method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum |
| CN103225267A (en) * | 2013-03-29 | 2013-07-31 | 天津二十冶建设有限公司 | Construction method of deep and thick soft soil foundation bed bridge abutment |
| CN203614911U (en) * | 2013-11-15 | 2014-05-28 | 中交天航港湾建设工程有限公司 | Shallow sea reclamation area submarine pipeline protection device |
-
2013
- 2013-11-15 CN CN201310578343.1A patent/CN103557366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081414A (en) * | 1980-08-08 | 1982-02-17 | Pilgrim Eng Dev | Pipe anchoring system |
| CN101851914A (en) * | 2010-06-09 | 2010-10-06 | 天津大学 | Method for regulating and controlling ventilating transformation and quickly reinforcing dredger fill in vacuum |
| CN103225267A (en) * | 2013-03-29 | 2013-07-31 | 天津二十冶建设有限公司 | Construction method of deep and thick soft soil foundation bed bridge abutment |
| CN203614911U (en) * | 2013-11-15 | 2014-05-28 | 中交天航港湾建设工程有限公司 | Shallow sea reclamation area submarine pipeline protection device |
Non-Patent Citations (2)
| Title |
|---|
| 围海造陆对已埋设海底管线安全性的影响;闫树旺，程栋栋;《天津大学学报》;20100430;第43卷(第4期);345-348页 * |
| 浅埋海底管线防护的设计方法研究;程栋栋，闫树旺，田英辉;《港工技术》;20050930;47-49页 * |
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