CN112376607B - Anti-floating construction method and anti-floating structure for river-crossing pipeline - Google Patents
Anti-floating construction method and anti-floating structure for river-crossing pipeline Download PDFInfo
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- CN112376607B CN112376607B CN202010481092.5A CN202010481092A CN112376607B CN 112376607 B CN112376607 B CN 112376607B CN 202010481092 A CN202010481092 A CN 202010481092A CN 112376607 B CN112376607 B CN 112376607B
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- 238000007667 floating Methods 0.000 title claims abstract description 71
- 238000010276 construction Methods 0.000 title claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 59
- 239000010959 steel Substances 0.000 claims abstract description 59
- 239000004575 stone Substances 0.000 claims abstract description 55
- 239000004576 sand Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims abstract description 23
- 239000011241 protective layer Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 7
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 4
- 239000008397 galvanized steel Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008635 plant growth Effects 0.000 description 2
- 239000008262 pumice Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/46—Foundations for supply conduits or other canals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
-
- 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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Revetment (AREA)
Abstract
The invention provides an anti-floating construction method for a river-crossing pipeline, wherein after the pipeline is arranged, an anti-floating stone cage is arranged on the pipeline, the lower part of the anti-floating stone cage is fixed with foundations at two sides of the pipeline, the anti-floating stone cage consists of a steel wire net cage and stone blocks, and the stone blocks are filled in the steel wire net cage; the anti-floating structure of the river-crossing pipeline obtained after the construction comprises a pipeline and anti-floating structure fixed foundations positioned on two sides of the pipeline, wherein the pipeline is paved on a foundation, the surface of the pipeline is wrapped with a medium coarse sand protection layer, and the section of the medium coarse sand protection layer is rectangular; an anti-floating gabion is arranged on the medium coarse sand protective layer, and consists of a steel wire net cage and block stones filled in the steel wire net cage; the bottom of the steel wire net cage is rectangular matched with the middle coarse sand protective layer, two sides of the bottom of the steel wire net cage are fixedly connected with the fixed foundation, and the outer parts of the steel wire net cage are flat planes.
Description
Technical Field
The invention belongs to a river-crossing pipeline construction technology, and particularly relates to an anti-floating construction method and an anti-floating structure of a pipeline.
Background
At present, the construction technology of the urban long-distance pipeline in China tends to be mature. In pipeline buried construction, it occurs when a part of the area is crossing an obstacle, a river, a railway, a highway. Therefore, when the pipeline passes through the river section, the weight of the pipeline may be smaller than the buoyancy of water, so that the pipeline floats upwards after the river is dredged, and the pipeline cannot be permanently positioned. Typical conventional pipe anti-float measures are anchor rod anti-float and counterweight anti-float. The anchor rod has complex anti-floating construction, high requirement on stratum conditions and high manufacturing cost; the weight and floating resistance mostly uses the dead weight of concrete, the working procedures are more, and the maintenance time is long.
Disclosure of Invention
The invention aims to optimize the pipeline anti-sinking construction in the prior art, and provides a pipeline anti-floating method which is convenient for construction, low in cost and capable of saving the construction period.
In order to achieve the above purpose, the specific technical means provided by the invention are as follows:
After the pipeline is arranged, an anti-floating stone cage is arranged on the pipeline, the lower part of the anti-floating stone cage is fixed with foundations at two sides of the pipeline, the anti-floating stone cage consists of a steel wire net cage and stone blocks, and the stone blocks are filled in the steel wire net cage.
The invention belongs to a construction method of an anti-floating structure of a river-crossing pipeline, which is suitable for small and medium-sized rivers and water with low flow rate, can replace the traditional anti-floating and counterweight anti-floating pipeline anti-floating measures, has the advantages of convenient material taking, low construction cost, no need of maintenance, and direct subsequent construction after the construction is finished. The anti-floating stone cage has good permeability, can prevent damage caused by hydrostatic force, and simultaneously suspended matters, silt and the like in water can be precipitated in gaps of the filling material to be beneficial to plant growth, and the survival of fish can be integrated with surrounding natural environment, so that the growth of natural plants is facilitated, and the original ecological environment is gradually recovered.
Specifically, the anti-floating stone cage installation method comprises the following specific operations:
the first step: a pipeline laying
1) After preliminary foundation treatment, arranging a pipeline;
2) According to the positioning and the running direction of the pipeline, removing the silt in the pipeline construction area, and applying a layer of natural aggregate and matched sand downwards from the elevation of the bottom of the pipeline, wherein the natural aggregate and matched sand is consistent with the elevation of the original ground;
3) Paving a layer of coarse sand on the pipeline for protection and pipeline fixation;
B anti-floating stone cage manufacturing
1) Straightening the net sheet on a flat field, and binding to form a steel wire net cage, wherein the bottom surface of the net cage is matched with the outer shape of the middle coarse sand layer around the pipeline, and the top surface of the net cage is a flat plane;
2) Filling stone blocks into a plurality of steel wire net boxes on the same layer, simultaneously filling materials into each steel wire net box, controlling the thickness of the materials below 30cm, and carrying out dense joint filling by using small gravels;
3) Sealing the steel wire net cage;
Hoisting the anti-floating stone cages to a designated position, pressing the anti-floating stone cages on a middle coarse sand layer on the surface layer of the pipeline, and equidistantly placing the rest floating stone cages along the trend of the pipeline;
and thirdly, after the anti-floating stone cages of the river crossing pipeline are placed in place, the cofferdam can be removed, and the river is dredged.
Preferably, the steel wire net box is partitioned by a spacing net, and the spacing net is intersected with the net box body at 90 degrees.
Preferably, the steel wire net cage is combined into a larger net cage by adopting 2-3 single net cages.
Preferably, the steel wire cage is woven from galvanized steel wires.
Preferably, the top surface of the material filled in the steel wire net box is 3cm-5cm higher than the net box body and is densely filled.
Preferably, a binding wire is arranged at a distance of 25cm between the intersection line of the sealing cover and the gabion frame.
The invention also provides an anti-floating structure of the river-crossing pipeline directly obtained by the construction, which comprises a pipeline and anti-floating structure fixed foundations positioned at two sides of the pipeline, wherein the pipeline is laid with a foundation, the surface of the pipeline is wrapped with a middle coarse sand protection layer, and the section of the middle coarse sand protection layer is rectangular; an anti-floating gabion is arranged on the medium coarse sand protective layer, and consists of a steel wire net cage and block stones filled in the steel wire net cage; the bottom of the steel wire net cage is rectangular matched with the middle coarse sand protective layer, two sides of the bottom of the steel wire net cage are fixedly connected with the fixed foundation, and the outside is flat.
Preferably, the size of the stone is more than 1.5 times of the mesh size of the steel wire net box.
Drawings
FIG. 1 is a cross-sectional structural view of a construction structure of the present invention;
fig. 2 is a schematic view of the construction effect of the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to fig. 1-2.
Aiming at the defects of the traditional pipeline anti-floating structure, the invention provides the construction of the river bottom pipeline anti-floating structure which is suitable for small and medium rivers and has low water flow. Compared with the existing pipeline anti-floating mode, the pipeline anti-floating device is more practical and ecological and environment-friendly.
The structure comprises a steel wire cage and an internally filled stone block. The required steel wire protection cage is made of galvanized steel wires, and the inner filling stone is used for taking materials on site.
The construction of the steel wire cage comprises foundation treatment, and the assembly and binding of the cage. The construction of the internally filled stone comprises the selection of filler and the construction of the filler.
The invention provides a method for anti-floating construction of a river-crossing pipeline, which comprises the following steps: before construction, a proper cofferdam mode is selected according to the geological hydrology and other conditions of a construction area, and water pumping in the weir and river bottom sludge treatment are completed. The installation and construction operation steps of the concrete anti-floating gabion are as follows:
(1) Foundation treatment and pipeline laying: and constructing the foundation 3 of the anti-floating gabion at two sides of the paved pipeline 5. The compactness of the foundation meets the requirement, and when the foundation is worse in site, the foundation is treated.
(2) Gabion assembly and binding: the net sheet is straightened on a flat field, spliced according to the crease positions and bound to form the rectangular steel wire net box 1 with the standard outside. In order to facilitate the binding of a larger net cage, the inside of the net cage is partitioned by a spacing net, and the spacing net and the net body are intersected at 90 degrees. The binding wire must be a steel wire of the same specification and material as the wire. Each binding must be a double-stranded wire and twisted, and the end of the steel wire is folded inwards and is not exposed. The binding of the mesh junction of each structural surface of the steel wire net cage 1 meets the following requirements: 1) Binding the interval net and the four intersecting angles of the cage body respectively; 2) The joint of the spacing net and the cage body is bound together at intervals of 20-25 cm. The steel wire net box can also be combined into a whole by adopting 2-3 single net boxes, so that a larger net box is formed. The smaller net cages are respectively bound more conveniently. The connection and binding between the groups of the steel wire net boxes 1 meet the following requirements: 1) Binding the upper and lower four corners of the adjacent steel wire net cage groups respectively; 2) Binding upper and lower frame wires or fold lines of adjacent steel wire net cage groups at intervals of 20-25 cm; 3) When binding the lower corners of adjacent frame lines, the lower steel wire net boxes are bound and connected into a whole together, and the steel wire net boxes are arranged below. After the connection of each layer of net cage is completed, a wooden rod or an iron pipe can be used for temporarily fixing along the edge of the layer of net cage, so that the edge of the loaded box body is smooth.
(3) Stone cage filling stone
The selection of the filler is first performed before construction. The filled stone 2 stone should meet the requirement of dry masonry stone, and the stone is firm and fresh and has no weathered flaking or cracks. And the stone should have a large capacity, the minimum size of the stone 2 being not less than 1.5 times the mesh size of the gabion. The use of pumice is strictly forbidden. The filling stone should be noted as follows:
1) The filling material should be evenly fed into a plurality of boxes on the same layer at the same time, the filling material should not be fully fed into Shan Gexiang at one time, the top surface of the filling material should be properly higher than the structural body by 3cm-5cm, and the filling material should be compact.
2) In the filler construction, the thickness of each layer of the material is controlled below 30cm, and small gravels are used for dense joint filling. The outer side is filled with stones, the surfaces of the stones are manually or mechanically laid and leveled, and the stones are mutually overlapped.
(4) Gabion closing cap
And (4) building and leveling the stone at the top, and then sealing the anti-floating stone cage. The adjacent nodes at each end of the net cage must be fixed by using the cover clamp and then bound. The intersection line of the sealing cover and the net cage frame should be bound together every 25 cm.
(5) Gabion placement
The anti-floating gabion should be placed after the pipe 5 is in place. And (5) removing sludge in the pipeline construction area according to the positioning and the running direction of the pipeline. And excavating downwards a certain depth at the elevation of the bottom of the pipe, and applying natural aggregate sand with a certain thickness to reach the elevation of the original ground. The middle coarse sand protection layer 4 with a certain thickness is paved around the pipe body, so that the pipe is fixed on one hand, and collision between the stone block 2 and the pipe 5 is avoided on the other hand.
Placing the anti-floating stone cage at a specified position by using a crane or a crawler crane. The rest gabions are placed at intervals along the pipeline.
(6) Cofferdam dismantling method
And after the anti-floating stone cages of the river pipeline are placed in place, the cofferdam can be removed, and the river is dredged.
The construction method of the invention directly obtains the anti-floating structure of the river-crossing pipeline: the anti-floating structure comprises a pipeline 5 and anti-floating structure fixing foundations 3 positioned on two sides of the pipeline, wherein the pipeline 5 is laid on a foundation, the surface of the pipeline 5 is wrapped with a middle coarse sand protection layer 4, and the section of the middle coarse sand protection layer 4 is rectangular; an anti-floating stone cage is arranged on the medium coarse sand protective layer 4 and consists of a steel wire net cage 1 and stone blocks 2 filled in the steel wire net cage; the bottom of the steel wire net cage 1 is rectangular matched with the middle coarse sand protective layer 4, two sides of the bottom of the steel wire net cage 1 are fixedly connected with the fixed foundation 3, and the outer parts of the steel wire net cage are flat planes; the size of the stone block 2 is more than 1.5 times of the mesh size of the steel wire net box.
The invention has the beneficial effects that:
(1) Economy: the construction is carried out by only filling the filling material into the net cage for sealing, so that the transportation cost is saved, and the construction cost is much lower than that of cast-in-situ concrete and prefabricated member protection projects;
(2) The construction is simple and convenient: the steel wire net box can be folded for transportation, and is assembled by local material on the site without special technology;
(3) Good durability: the stone blocks are obtained from the river channel site, the steel wire net cage is galvanized steel wires, and the material has strong capabilities of resisting natural damage, corrosion resistance and adverse weather influence;
(4) The anti-scouring capability is stronger: the anti-floating stone cage can bear the maximum water flow speed of up to 6m/s;
(5) Good flexibility: the anti-floating gabion can adapt to the change of the surrounding environment without being damaged, can bear large-scale deformation without collapse, and has better ductility and safety stability than a rigid structure;
The anti-pumice cage provided by the invention has good permeability, can prevent damage caused by hydrostatic force, and simultaneously, suspended matters, silt and the like in water can be precipitated in gaps of the filling material to be beneficial to plant growth, and the survival of fish can be integrated with surrounding natural environment, so that the growth of natural plants is facilitated, and the original ecological environment is gradually recovered.
Claims (7)
1. The river-crossing pipeline anti-floating construction method comprises pipeline construction and anti-floating structure fixed foundation construction positioned on two sides of the pipeline, and is characterized in that: the pipeline is paved on the foundation, the surface of the pipeline is wrapped with a medium coarse sand protection layer, and the section of the medium coarse sand protection layer is rectangular; an anti-floating gabion is arranged on the medium coarse sand protective layer, and consists of a steel wire net cage and block stones filled in the steel wire net cage; the bottom of the steel wire net cage is rectangular matched with the middle coarse sand protective layer, two sides of the bottom of the steel wire net cage are fixedly connected with the fixed foundation, and the outer parts of the steel wire net cage are flat planes;
the concrete operation of the anti-floating stone cage installation is as follows:
the first step: a pipeline laying
1) After preliminary foundation treatment, arranging a pipeline;
2) According to the positioning and the running direction of the pipeline, removing the silt in the pipeline construction area, and applying a layer of natural aggregate and matched sand downwards from the elevation of the bottom of the pipeline, wherein the natural aggregate and matched sand is consistent with the elevation of the original ground;
3) Paving a middle coarse sand layer on the pipeline for protection and pipeline fixation;
B anti-floating stone cage manufacturing
1) Straightening the net piece on a flat field, and binding to form a steel wire net box, wherein the bottom surface of the steel wire net box is matched with the outer shape of the middle coarse sand layer around the pipeline, and the top surface of the steel wire net box is a flat plane;
2) Filling stone blocks into a plurality of steel wire net boxes on the same layer, simultaneously filling materials into each steel wire net box, controlling the thickness of the materials below 30cm, and carrying out dense joint filling by using small gravels;
3) Sealing the steel wire net cage;
Hoisting the anti-floating stone cages to a designated position, pressing the anti-floating stone cages on a middle coarse sand layer on the surface layer of the pipeline, and equidistantly placing the rest floating stone cages along the trend of the pipeline;
and thirdly, after the anti-floating stone cages of the river crossing pipeline are placed in place, the cofferdam can be removed, and the river is dredged.
2. The anti-floating construction method of the river-crossing pipeline according to claim 1, wherein the anti-floating construction method comprises the following steps: the steel wire net box is partitioned by a spacing net, and the spacing net is intersected with the net box body at 90 degrees.
3. The anti-floating construction method of the river-crossing pipeline according to claim 1, wherein the anti-floating construction method comprises the following steps: the steel wire net cage is combined into a larger net cage by adopting 2-3 single net cages.
4. The anti-floating construction method of the river-crossing pipeline according to claim 1, wherein the anti-floating construction method comprises the following steps: the steel wire net box is braided by galvanized steel wires.
5. The anti-floating construction method of the river-crossing pipeline according to claim 1, wherein the anti-floating construction method comprises the following steps: the top surface of the material filled in the steel wire net box is 3cm-5cm higher than the net box body and is densely filled.
6. The anti-floating construction method of the river-crossing pipeline according to claim 1, wherein the anti-floating construction method comprises the following steps: the sealing cover and the intersecting line of the gabion frame are bound by one binding wire every 25cm apart.
7. The anti-floating construction method of the river-crossing pipeline according to claim 1, wherein the anti-floating construction method comprises the following steps: the size of the stone block is more than 1.5 times of the mesh size of the steel wire net box.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010481092.5A CN112376607B (en) | 2020-05-31 | 2020-05-31 | Anti-floating construction method and anti-floating structure for river-crossing pipeline |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010481092.5A CN112376607B (en) | 2020-05-31 | 2020-05-31 | Anti-floating construction method and anti-floating structure for river-crossing pipeline |
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| CN112376607A CN112376607A (en) | 2021-02-19 |
| CN112376607B true CN112376607B (en) | 2024-05-17 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648072A (en) * | 2005-02-03 | 2005-08-03 | 中国水利水电科学研究院 | Water purifying stone cage and method for stone cage water purification |
| CN105020474A (en) * | 2015-07-28 | 2015-11-04 | 中铁城市规划设计研究院有限公司 | River-crossing pipeline reinforcing structure |
| CN208251015U (en) * | 2018-04-25 | 2018-12-18 | 苏州大学 | A kind of environment amity city inland river river harbour |
| CN208762808U (en) * | 2017-12-25 | 2019-04-19 | 浙江大学城市学院 | Neighbouring the express highway roadbed of existing Subway Facilities fills out river structure |
| CN212294736U (en) * | 2020-05-31 | 2021-01-05 | 中国二十二冶集团有限公司 | Anti-floating structure of river-crossing pipeline |
-
2020
- 2020-05-31 CN CN202010481092.5A patent/CN112376607B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648072A (en) * | 2005-02-03 | 2005-08-03 | 中国水利水电科学研究院 | Water purifying stone cage and method for stone cage water purification |
| CN105020474A (en) * | 2015-07-28 | 2015-11-04 | 中铁城市规划设计研究院有限公司 | River-crossing pipeline reinforcing structure |
| CN208762808U (en) * | 2017-12-25 | 2019-04-19 | 浙江大学城市学院 | Neighbouring the express highway roadbed of existing Subway Facilities fills out river structure |
| CN208251015U (en) * | 2018-04-25 | 2018-12-18 | 苏州大学 | A kind of environment amity city inland river river harbour |
| CN212294736U (en) * | 2020-05-31 | 2021-01-05 | 中国二十二冶集团有限公司 | Anti-floating structure of river-crossing pipeline |
Non-Patent Citations (1)
| Title |
|---|
| 《平山供水应急抢险工程方案比选与工程布置探析》;魏巍;《平山供水应急抢险工程方案比选与工程布置探析》;20170930;第第45卷卷(第第9期期);第111-115页 * |
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