CN114215961A - Construction method suitable for pipeline engineering supporting structure in landslide area - Google Patents
Construction method suitable for pipeline engineering supporting structure in landslide area Download PDFInfo
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- CN114215961A CN114215961A CN202111514550.1A CN202111514550A CN114215961A CN 114215961 A CN114215961 A CN 114215961A CN 202111514550 A CN202111514550 A CN 202111514550A CN 114215961 A CN114215961 A CN 114215961A
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- sliding
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- 238000010276 construction Methods 0.000 title claims abstract description 45
- 238000004873 anchoring Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 8
- 229920002748 Basalt fiber Polymers 0.000 claims description 5
- 230000035939 shock Effects 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 2
- 239000010959 steel Substances 0.000 claims 2
- 239000006096 absorbing agent Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 238000009415 formwork Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 239000002689 soil Substances 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000002156 mixing Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007580 dry-mixing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
- F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes 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
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
-
- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
本发明公开了一种适用于滑坡区管道工程支护结构的施工方法，支护结构包括沟渠、管道和支护结构；沟渠埋设于地表之下，管道放置于沟渠中，所述管道与沟渠的两内壁之间设有减震件，所述减震件包括多个且间隔设置；支护结构包括位于沟渠两侧的抗滑桩，所述抗滑桩的顶部浇筑有连接梁；靠近山体一侧的抗滑桩上还连接有预应力锚杆，所述锚杆的锚固段穿过滑面固定于滑坡基岩层。施工方法包括以下步骤：1）抗滑桩施工；2）预应力锚杆施工；3）管沟施工；4）管道安装；5）管道回填；6）连接梁施工；7）锚杆张拉锁定；管道两侧的微型抗滑桩群不仅可以平衡山侧滑体推力，也可以承担河侧荷载作用，在滑坡变形过程中有效保护管道，防止其变形破坏。
The invention discloses a construction method suitable for a pipeline engineering supporting structure in a landslide area. The supporting structure includes a ditch, a pipeline and a supporting structure; Between the two inner walls, there are shock-absorbing parts, and the shock-absorbing parts include a plurality of them and are arranged at intervals; the supporting structure includes anti-sliding piles located on both sides of the ditch, and the top of the anti-sliding piles is poured with connecting beams; The anti-sliding piles on the side are also connected with prestressed anchor rods, and the anchoring sections of the anchor rods are fixed to the landslide bedrock layer through the sliding surface. The construction method includes the following steps: 1) construction of anti-sliding piles; 2) construction of prestressed bolts; 3) construction of pipe trenches; 4) installation of pipes; 5) backfilling of pipes; 6) construction of connecting beams; ; The miniature anti-slide pile groups on both sides of the pipeline can not only balance the thrust of the mountain side slide body, but also bear the load on the river side, effectively protect the pipeline in the process of landslide deformation and prevent its deformation and damage.
Description
Technical Field
The invention belongs to the technical field of construction, and particularly relates to a construction method suitable for a pipeline engineering supporting structure in a landslide area.
Background
The pipeline construction inevitably needs to pass through a topsoil landslide growing area, although the landslide is treated in the early stage of construction, so that the landslide is in a stable state. However, under the influence of factors such as heavy rainfall or earthquake, the surface soil body can creep or move greatly, and a small-range landslide is caused. Because the surface soil body moves, the pipeline is pushed to deform, even the pipeline is broken and damaged, and great harm is caused to the pipeline operation and the surrounding environment. Therefore, it is necessary to take reasonable protective measures for pipelines in the landslide area of the surface soil layer.
Disclosure of Invention
The invention provides a construction method suitable for a pipeline engineering supporting structure in a landslide area and aims to solve the technical problem.
Therefore, the invention adopts the following technical scheme:
a construction method suitable for a pipeline engineering supporting structure in a landslide area is specifically carried out according to the following steps:
1) and (3) constructing the slide-resistant pile: according to a pipeline construction drawing, vertically punching holes on the left side and the right side of a pipeline along the extending direction of the pipeline to form pile holes, and pouring concrete in the pile holes to form anti-slide piles;
2) and (3) prestressed anchor rod construction: after the maintenance of the anti-slide pile is finished, connecting a pre-stressed anchor rod on the pile top surface of the anti-slide pile close to one side of the mountain, and fixing an anchor rod anchoring section on a landslide foundation layer by penetrating through a sliding surface;
3) construction of pipe ditches: excavating a ditch for placing a pipeline between the two rows of anti-slide piles, and constructing a pipe ditch in the ditch;
4) installing a pipeline: after the pipe ditch construction is finished, hoisting and placing the pipeline in the pipe ditch; shock absorbing pieces are arranged on the pipeline at intervals and are arranged between the pipeline and two side walls of the ditch; the shock absorption piece comprises a straight plate, a spring and an arc plate which are fixedly connected in sequence, the straight plate is close to the side wall of the ditch, and the arc plate is close to the outer wall of the pipeline;
5) backfilling a pipeline: placing a trench cover at the top of the pipe trench, then backfilling the trench, and burying the pipe trench under the ground surface;
6) construction of a connecting beam: binding tie bars at the tops of the two rows of anti-slide piles to form a reinforcing mesh, fixing templates around the reinforcing mesh, pouring concrete to form a connecting beam, and reserving anchor rod holes on the connecting beam during pouring;
7) tensioning and locking an anchor rod: after the connecting beam is formed stably, a pedestal is arranged on the connecting beam, and the anchor rod (6) is tensioned and locked.
Further, at least two rows of anti-slide piles are built on one side close to the mountain.
Further, the slide-resistant pile is a micro threaded pile.
Further, the concrete poured in the pile hole is chopped basalt fiber concrete.
Further, the outer wall of the pipeline is coated with an EPS flexible material.
Further, the surface of the spring is coated with a waterproof and anticorrosive material.
The invention has the beneficial effects that:
1. the anti-slide piles on the two sides of the pipeline can balance thrust of a landslide body and river side load, effectively protect the pipeline in the landslide deformation process and effectively prevent the pipeline from deforming and damaging;
2. the screw pile is adopted as the anti-slide pile, so that the construction is simple and convenient, the soil discharge is less, no vibration is caused, the disturbance to the surrounding soil body is small, the compaction effect is realized on the surrounding soil body, the support effect is exerted, and the stability of the landslide soil body can be enhanced;
3. the pile body of the screw pile is made of chopped basalt fiber concrete material, compared with the traditional plain concrete screw pile, the anti-cracking performance and the shock resistance of the screw pile can be improved, so that the normal service life of the pipeline is prolonged;
4. the connecting beams connect the anti-slide piles on the two sides of the pipeline into a common reinforcing body, so that the supporting performance of the supporting structure is improved;
5. the EPS flexible material is coated on the periphery of the pipeline, so that the pipeline is prevented from being damaged and cracked during construction; the pipeline both sides set up the damper, can effectively cushion landslide thrust, reduce pipeline vibration, effectively protect pipeline safety.
Drawings
FIG. 1 is a schematic structural view of the pipe of the present invention;
FIG. 2 is a schematic view of the construction of the shock absorbing member of the present invention;
figure 3 is a schematic cross-sectional view of a slide pile according to the invention;
in the figure: 1-slide-resistant pile, 2-pipe trench, 3-pipeline, 4-shock-absorbing piece, 41-straight plate, 42-spring, 43-arc plate, 5-connecting beam and 6-anchor rod.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
a construction method suitable for a pipeline engineering supporting structure in a landslide area is specifically carried out according to the following steps:
1) and (3) constructing the slide-resistant pile: firstly, planning the pipeline trend in a landslide area, drawing a pipeline design construction drawing, determining the buried depth of a pipeline 3, and determining the standard depth and the construction position of a pile hole according to the buried depth; the pile driver enters a field to be in place, and holes are vertically punched on the left side and the right side of the pipeline 3 along the extending direction of the pipeline according to a pipeline design construction drawing to form pile holes; in order to improve the supporting and anti-sliding performance, at least two rows of pile holes can be drilled on one side close to the mountain;
when punching, the stake machine control drilling rod aims at design stake position, starts the stake machine, and the decline of control cavity drilling rod, the drilling rod descending speed is with the relation of rotational speed: when the drill rod descends one pitch, the drill rod rotates one circle clockwise; when the drill rod is drilled to the designed depth, the relationship between the rising speed of the drill rod and the rotating speed is as follows: and when the drill rod rises by one thread pitch, the drill rod rotates anticlockwise by one circle, so that a relatively complete threaded pile hole is formed. When the drill rod rises, the chopped basalt fiber concrete is injected into the hole through a grouting pipe in the hollow drill rod, and the anti-slide pile 1 is formed after the concrete is solidified;
mixing short basalt fiber concrete: a forced stirrer is adopted, and during mixing, the fibers, sand, stone, cement and the like are added into the stirrer at the same time. The dry mixing is firstly carried out, then the wet mixing is carried out, and the mixing time strictly meets the standard requirement so as to ensure that the fibers can be uniformly mixed in the concrete.
2) And (3) prestressed anchor rod construction: after the maintenance of the anti-slide pile 1 is finished, a prestressed anchor rod 6 with an inclination angle is arranged on the pile top plane of the anti-slide pile 1 close to one side of the mountain, and the anchoring section of the anchor rod 6 penetrates through the sliding surface and is fixed on the landslide foundation layer. The prestressed anchor 6 with the inclination angle can improve the tensile force, thereby improving the lateral compressive strength of the slide-resistant pile 1.
3) Construction of pipe ditches: excavating a ditch for placing a pipeline 3 between the two rows of anti-slide piles 1, wherein the excavation depth is greater than the standard depth of the pipeline 3; constructing a concrete pipe ditch 2 in the ditch, wherein the cross section of the concrete pipe ditch 2 is rectangular or U-shaped, and the concrete pipe ditch 2 can adopt prefabricated parts for shortening the construction period; during construction, the prefabricated members are sequentially and closely placed in the ditch, and concrete is poured at the joints of the two prefabricated members, so that the connection strength of the prefabricated members is improved.
4) Installing a pipeline: after the pipe ditch construction is finished, the pipeline 3 is hoisted and placed in the pipe ditch 2, and the pipeline 3 needs to be placed in the center of the pipe ditch 2. Then, damper members 4 are installed on the pipe 3 with a space of 0.8-1.5m between adjacent damper members 4. The shock-absorbing part 4 comprises a straight plate 41, a spring 42 and an arc plate 43 which are fixedly connected in sequence, and the radian of the arc plate 43 is matched with the outer wall of the pipeline 3; the straight plates 41 abut the trench sidewalls and the arcuate plates 43 abut the outer walls of the pipe 3 (as shown in figure 2). The damping piece 4 is used for improving the stability of the pipeline 3, and when an earthquake occurs, the damping piece 4 plays a role in buffering, so that the swing amplitude of the pipeline 3 in the left and right directions can be reduced, and the pipeline 3 is prevented from cracking or even breaking due to overlarge amplitude. In addition, because pipeline 3 has small amplitude vibration in the transported substance process, damper 4 also can reduce the amplitude of pipeline 3, prevents that pipeline 3 from appearing the crazing crack, improves pipeline 3 life-span.
In addition, the outer wall of the pipeline 3 is coated with EPS flexible materials, so that the pipeline 3 is prevented from being damaged during lifting; the surface of the spring 42 is coated with a waterproof and anticorrosive material, so that the elasticity of the spring 42 is prevented from being reduced due to rusting, and the service life of the spring 42 is prolonged.
5) Backfilling a pipeline: a trench cover is arranged above the pipe trench 2, concrete does not need to be poured between the trench covers, and the later maintenance operation of the pipeline 3 is facilitated; and then backfilling the ditch, tamping the backfilled soil, and exposing the pile head of the slide-resistant pile 1 out of the tamped soil.
6) Construction of a connecting beam: binding tie bars at the pile tops of the anti-slide piles 1 to form a reinforcing mesh, wherein the reinforcing mesh completely covers the anti-slide piles 1 on the two sides; fixing a template around the reinforcing mesh, and pouring to form a connecting beam 5; when pouring, the end of the anchor rod 6 is sleeved with a PVC pipe, and an anchor rod hole is reserved.
7) Tensioning and locking an anchor rod: after the connecting beam 5 is stably formed, a pedestal is arranged on the connecting beam 5, and the anchor rods 6 are tensioned and locked, so that the construction operation is completed.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514550.1A CN114215961B (en) | 2021-12-13 | 2021-12-13 | A construction method suitable for pipeline engineering support structures in landslide areas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111514550.1A CN114215961B (en) | 2021-12-13 | 2021-12-13 | A construction method suitable for pipeline engineering support structures in landslide areas |
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| CN114215961A true CN114215961A (en) | 2022-03-22 |
| CN114215961B CN114215961B (en) | 2023-10-27 |
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|---|---|---|---|---|
| CH610966A5 (en) * | 1976-07-22 | 1979-05-15 | Willi Steiner | Rock or slope revetment and method of constructing it |
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| CN108086352A (en) * | 2018-02-01 | 2018-05-29 | 云南新创新交通建设股份有限公司 | A kind of highway hard rock Steep Slope Embankment anchor rod foundation Anti-slide Pile Retaining Structure |
| CN110439011A (en) * | 2019-09-04 | 2019-11-12 | 中国电建集团中南勘测设计研究院有限公司 | A kind of side slope antiskid supporting construction and its construction method |
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-
2021
- 2021-12-13 CN CN202111514550.1A patent/CN114215961B/en active Active
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| CN114215961B (en) | 2023-10-27 |
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