CN110453687A - A kind of Metro station excavation excavates the protection structure and construction method of pipeline - Google Patents
A kind of Metro station excavation excavates the protection structure and construction method of pipeline Download PDFInfo
- Publication number
- CN110453687A CN110453687A CN201910705062.5A CN201910705062A CN110453687A CN 110453687 A CN110453687 A CN 110453687A CN 201910705062 A CN201910705062 A CN 201910705062A CN 110453687 A CN110453687 A CN 110453687A
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- Prior art keywords
- pipeline
- concrete
- excavates
- protection
- layer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 24
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 39
- 239000004567 concrete Substances 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000006378 damage Effects 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 34
- 239000004927 clay Substances 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000007596 consolidation process Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000011378 shotcrete Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000002262 irrigation Effects 0.000 claims description 3
- 238000003973 irrigation Methods 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 2
- 230000003252 repetitive effect Effects 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- 239000004830 Super Glue Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
-
- 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
- E02D17/02—Foundation pits
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses protection structure and its construction method that a kind of Metro station excavation excavates pipeline, this method protection structure includes that the concrete-pile of pipeline ontology two sides and the rubber ring of pipeline ontology surrounding is arranged in and is laid with concrete bearing plate in lower section to add bracket；Metalling and compacted cohesive soil layer are laid with above pipeline.The present invention solves in the prior art, and Metro station excavation excavates the destruction to pipeline.Program construction is simple, performance stabilization, long service life, can do dynamic protection to pipeline in Metro station excavation digging process, while also substantially increasing construction efficiency.
Description
Technical field
The present invention relates to the protection structure of pipeline in pipeline protection field more particularly to Metro station excavation digging process and
Construction method.
Background technique
With the quickening of urbanization process, metro construction is also increasingly burning hoter.In Metro station excavation digging process
Surrounding soil can be caused to be displaced and settle, to damage to pipeline.Underground utilities still suffer from the driving on road simultaneously
The weight stress of load and the top soil body.These factors can all cause the destruction of underground utilities.
The protection scheme of existing pipeline typically does a whole set of safeguard measure, after pipeline before excavation of foundation pit
Phase protection lacks timeliness.
Summary of the invention
In view of the deficiencies of the prior art, the first object of the present invention be to provide a kind of Metro station excavation excavate in pipeline
Structure and construction method are protected, is excavated with solving Metro station excavation to destruction caused by pipeline.
To achieve the above object, the present invention provides a kind of dynamic protection structures of pipeline.It is excavated in Metro station excavation
In work progress, using safeguard measure step by step.Every section of construction procedure is as follows:
Step 1: before first layer soil excavates, the protection of the pipeline first order is carried out.In the pore-forming at the 3.5m of pipeline two sides,
Waste pulp, body refuse are removed, and carries out borehole cleaning and changes slurry, descending reinforcing cage and the last pile of steel conduit casting concrete, stake diameter is 1.2m, stake
With pipeline distance be 3.5m, be arranged concrete-pile while it is noted that pipeline position.
Step 2: before second layer soil excavates, carrying out the protection of the pipeline second level, completes concrete bearing plate and adds bracket knot
Structure.Irrigation canals and ditches and step surface are excavated in pipeline two sides, to step surface gunite concrete；The rubber of one layer of 2cm thickness of pipeline table surface cover
Guard circle, rubber protective ring are adjacent to pipeline；The concrete loading plate of 20cm thickness is arranged in pipeline bottom, is equipped with width above loading plate
The concrete socket of 5cm, the width of loading plate are flushed with groove；The concrete straight panel of pipeline two sides grafting 20cm thickness, straight panel
Height is flushed with pipeline vertex, and groove is equipped at the top of straight panel and among lower part, and recess width 5cm is thick in groove grafting 15cm
Arch bearing plate.Be completely embedded between arch bearing plate and straight panel, straight panel and concrete bearing plate, when necessary to interface into
Row consolidation process.
Step 3: before third layer soil excavates, the third level protection of pipeline is carried out.The pressure of 0.5m thickness is laid with above pipeline
Real clay layer, clay top are laid with the metalling of 0.1m thickness, continue place mat compacted cohesive soil layer above metalling.Repetitive operation,
Until being routed to surface layer, and topsoil is compacted with compacting machinary.
The effective protection of pipeline may be implemented in the present invention through the above technical solution.
Be embodied in, excavate first layer soil before, concrete-pile can reduce the displacement of pipeline surrounding soil, play every
From effect.
The concrete of step 2 injection can carry out consolidation process to step surface, while also improve pipeline protection structure
Stability.The guard method of concrete floor can successfully manage the displacement and sedimentation of the soil body after second layer soil excavates, simultaneously
Also effect is fixed to pipeline.Rubber protective ring further plays a protective role to pipeline, on arch bearing plate can mitigate
Portion's load.
The metalling of step 3, after can mitigating third layer soil excavation, extruding of the soil body to pipeline improves top soil
The intensity of layer, and the clay being compacted then plays the buffer function that upper load oppresses pipeline.
Pipeline construction of the present invention carries out simultaneously with metro station construction, while reducing the construction time, also acts as pipeline
Dynamic protection.Corresponding 7,9,11 be precast reinforced concrete structure in figure.
Pipeline near can excavating through the above scheme to subway station is effectively protected, while also improving and applying
Work efficiency rate alleviates influence of the foundation pit large area excavation to pipeline significantly.
Detailed description of the invention
Fig. 1 is digging process pipeline protection structural schematic diagram in subway station in the present embodiment.
Fig. 2 is the protection structural schematic diagram of step 1 in the present embodiment.
Fig. 3 is the protection structural schematic diagram of step 2 in the present embodiment.
Fig. 4 is the protection structural schematic diagram of step 3 in the present embodiment.
Fig. 5 is that concrete bearing plate adds supporting structure schematic diagram in this example.
Description of symbols: 1, first layer soil；2, existing pipeline；3, concrete-pile；4, second layer soil；5, step surface；6,
Rubber protective ring；7, concrete loading plate；8, concrete socket 9, concrete straight panel；10, groove；11, arch bearing plate；12,
Third layer soil；13, compacted cohesive soil；14, metalling.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
This example discloses a kind of Metro station excavation and excavates pipeline protection structure and construction method, is as shown in Figure 1
Pipeline architecture protects schematic diagram around the present embodiment excavation of subway process；
Before excavating including first layer soil 1, concrete-pile 3 is set in 2 two sides of pipeline；Before second layer soil 4 excavates, opened in pipeline two sides
Step surface 5 is dug, pipeline is wrapped up with rubber protective ring 6, sets concrete loading plate 7 below pipeline, inserting above concrete loading plate
10 upper end grafting arch bearing plate 11 of groove is arranged in mouth 8 among loading plate grafting concrete straight panel 9, straight panel top and bottom,
Before third layer native 12 is excavated, it is laid with the compacted cohesive soil layer 13 of 0.5m thickness above pipeline, the broken of 0.1m thickness is laid with above clay layer
Rock layers 14
Subway station as shown in Figure 1 is excavated to carry out simultaneously with pipeline protection.
Step surface as shown in Figure 3 wants gunite concrete to carry out consolidation process.
It is completely embedded between plate 9 and concrete bearing plate 7, consolidation process is carried out to interface when necessary.
Arch bearing plate 11 as shown in Figure 3 is located at the center of pipeline.
Step 1: first layer soil 1 carries out the first order protection of pipeline before excavating.In 2 two sides pore-forming of pipeline, remove useless
Slurry, body refuse, and carry out borehole cleaning and change slurry, descending reinforcing cage and the last pile of steel conduit casting concrete, stake diameter is 1.2m, stake and pipeline
Distance is 3.5m, and the buried depth of stake is 10m.Ultimately form concrete-pile 2.
Step 2: before second layer soil 4 excavates, carrying out second level pipeline protection, completes concrete bearing plate and adds bracket knot
Structure.According to physical prospecting figure, pipe position and the trend of each pipeline of status are found out, burrows to specific pipeline by 20m distance, confirms its buried depth
And trend must find angular position in pipeline corner, specify the trend of angle change rear line.Behind the direction for positioning pipeline,
Irrigation canals and ditches are excavated in pipeline two sides with excavator, hand compaction flattens out step surface 5, to step surface gunite concrete；Use sheet rubber
Pipeline is wrapped, fixes pipeline and sheet rubber in interface super glue or adhesive tape, ultimately forms the rubber protection of 2cm thickness
Circle；Along the concrete loading plate 7 of the underface bottom setting 20cm thickness of pipeline, guarantee that concrete loading plate is close to pipeline,
Pipeline is set to be supported on loading plate.Socket 8 is equipped with above loading plate, the width of bottom plate is flushed with groove；It inserts pipeline two sides
The concrete straight panel 9 for connecing 20cm thickness is flushed the height of straight panel with pipeline vertex with ruler, and straight panel top center is equipped with groove
10, in the arch bearing plate 11 of groove grafting 15cm thickness.It is filled with compacted cohesive soil in gap between pipeline and bracket.Finally with pressure
Real clay covers line holder to step surface.
Step 3: before third layer soil 12 excavates, third time pipeline protection is carried out.The grade of 0.5m thickness is laid with above pipeline
With good compacted cohesive soil 13.It has flattened after first layer bankets, the metalling of 0.1m thickness is laid with above the clay of compacted cohesive soil
14.It has flattened after second layer rubble bankets, has continued place mat compacted cohesive soil layer above metalling, repeat above operation, until paving
It is set to surface layer, is banketed with vibration compacting machine leveling earth's surface.After the completion of arrangement, continue to excavate third layer soil.
The embodiment of the present invention is explained in detail above, above embodiment is only most highly preferred embodiment of the invention,
But the present invention is not limited to above-described embodiments, it within the knowledge of a person skilled in the art, can also be
It is made a variety of changes under the premise of not departing from present inventive concept.
Claims (5)
1. the construction method that a kind of Metro station excavation excavates pipeline protection structure, which is characterized in that different for subway station
Excavation section carries out the protection step by step of pipeline, effectively mitigates Metro station excavation and disposably excavates the destruction to pipeline, every section of construction
Steps are as follows:
Step 1: subway station digging process is divided into three sections.Before first layer soil (1) excavates, the protection of the pipeline first order is carried out.
The pore-forming at existing pipeline (2) two sides 3m removes waste pulp, body refuse, and carries out borehole cleaning and change slurry, transfers steel reinforcement cage and steel conduit pours
Concrete eventually forms concrete-pile (3).
Step 2: before second layer soil (4) excavates, carrying out the protection of the pipeline second level, completes concrete bearing plate and adds supporting structure.
Irrigation canals and ditches are excavated in pipeline two sides and step surface (5) carries out the consolidation process of step surface to step surface gunite concrete；Yu Guan
Line surface covers the rubber protective ring (6) of one layer of 2cm thickness, and rubber protective ring is close to pipeline；The mixed of 20cm thickness is arranged in pipeline bottom
Solidifying soil loading plate (7), concrete loading plate are close to rubber protective ring, it is ensured that pipeline support is on concrete loading plate；Carrying
The concrete socket (8) of width 5cm is equipped with above plate, the width of loading plate is flushed with groove；Grafting 20cm in pipeline two sides is thick to be mixed
Solidifying soil straight panel (9), the height of straight panel are flushed with pipeline upper extreme point, are equipped with groove (10) at the top of straight panel and among lower part, groove is wide
Degree is 5cm, in the arch bearing plate (11) of groove grafting 15cm thickness.Supporting structure is covered to step surface with compacted cohesive soil simultaneously.
Step 3: before third layer soil (12) excavates, the protection of the pipeline third level is carried out.Step surface is backfilled, is spread above step surface
If the compacted cohesive soil layer (13) of 0.5m thickness, it is laid with the metalling (14) of 0.1m thickness above clay, continues place mat above metalling
Compacted cohesive soil layer.Repetitive operation until being routed to surface layer, and is compacted topsoil with compacting machinary.
2. a kind of Metro station excavation according to claim 1 excavates the construction method of pipeline protection structure, feature exists
In: the excavation section of the work progress and subway station corresponds, and forms the dynamic protection of pipeline.
3. a kind of Metro station excavation according to claim 1 excavates the construction method of pipeline protection structure, feature exists
In: the protection structure had both been applicable to flexible pipe line and has been equally applicable to rigid line.Excavation of foundation pit is avoided to generate excessive
Longitudinal stress makes its cross section that crack occur or biggish corner occurs in joint area and generates destruction.
4. a kind of Metro station excavation according to claim 1 excavates the construction method of pipeline protection structure, feature exists
In: the concrete loading plate (7), concrete straight panel (9), arch bearing plate (11) they are reinforced concrete precast member.Institute
The concrete-pile stake end stated will be inserted into hard soil layer, and for concrete-pile in 3m or so at a distance from existing pipeline, distance cannot be excessively close
It can not be too far.
5. the protection structure that a kind of Metro station excavation excavates pipeline, it is characterised in that: be arranged in the mixed of pipeline ontology (2) two sides
The rubber ring (6) of solidifying soil stake (3) and pipeline ontology surrounding is simultaneously laid with concrete bearing plate (7) and concrete pressure-bearing in lower section
Concrete socket (8) above plate；It is arranged among the concrete straight panel (9) of pipeline both sides setting and straight panel top and bottom
Groove (10)；The arch bearing plate (11) placed right above pipeline；It further include the metalling (14) being laid with above pipeline and compacting
Clay layer (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705062.5A CN110453687B (en) | 2019-07-31 | 2019-07-31 | Protection structure of subway station foundation pit excavation pipeline and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910705062.5A CN110453687B (en) | 2019-07-31 | 2019-07-31 | Protection structure of subway station foundation pit excavation pipeline and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110453687A true CN110453687A (en) | 2019-11-15 |
| CN110453687B CN110453687B (en) | 2024-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910705062.5A Active CN110453687B (en) | 2019-07-31 | 2019-07-31 | Protection structure of subway station foundation pit excavation pipeline and construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN110453687B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669506A (en) * | 2021-08-30 | 2021-11-19 | 大昌建设集团有限公司 | Municipal administration pipeline protection architecture |
| CN114575239A (en) * | 2022-02-21 | 2022-06-03 | 中冶华南建设工程有限公司 | Migration and modification method for in-situ protection of underground communication pipeline |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235649A (en) * | 2008-02-22 | 2008-08-06 | 上海市政工程设计研究总院 | Covered digging system for pit |
| KR20110130196A (en) * | 2010-05-27 | 2011-12-05 | 주식회사 코아이엔씨 | Subway platform and construct method of subway platform |
| CN106120801A (en) * | 2016-08-18 | 2016-11-16 | 中铁隧道集团二处有限公司 | In water-rich sand layer, pipeline crosses the construction method at foundation ditch |
| CN205954632U (en) * | 2016-08-18 | 2017-02-15 | 中铁隧道集团二处有限公司 | Pipeline crosses supporting construction of foundation ditch department in rich water sand layer |
| CN108252327A (en) * | 2017-12-29 | 2018-07-06 | 上海市机械施工集团有限公司 | The construction method of Large Underground high voltage substation |
| CN109972666A (en) * | 2019-04-19 | 2019-07-05 | 中铁建大桥工程局集团第四工程有限公司 | Excavation of subway foundation pit controls the existing construction method for closing on pipeline disturbance |
-
2019
- 2019-07-31 CN CN201910705062.5A patent/CN110453687B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235649A (en) * | 2008-02-22 | 2008-08-06 | 上海市政工程设计研究总院 | Covered digging system for pit |
| KR20110130196A (en) * | 2010-05-27 | 2011-12-05 | 주식회사 코아이엔씨 | Subway platform and construct method of subway platform |
| CN106120801A (en) * | 2016-08-18 | 2016-11-16 | 中铁隧道集团二处有限公司 | In water-rich sand layer, pipeline crosses the construction method at foundation ditch |
| CN205954632U (en) * | 2016-08-18 | 2017-02-15 | 中铁隧道集团二处有限公司 | Pipeline crosses supporting construction of foundation ditch department in rich water sand layer |
| CN108252327A (en) * | 2017-12-29 | 2018-07-06 | 上海市机械施工集团有限公司 | The construction method of Large Underground high voltage substation |
| CN109972666A (en) * | 2019-04-19 | 2019-07-05 | 中铁建大桥工程局集团第四工程有限公司 | Excavation of subway foundation pit controls the existing construction method for closing on pipeline disturbance |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113669506A (en) * | 2021-08-30 | 2021-11-19 | 大昌建设集团有限公司 | Municipal administration pipeline protection architecture |
| CN114575239A (en) * | 2022-02-21 | 2022-06-03 | 中冶华南建设工程有限公司 | Migration and modification method for in-situ protection of underground communication pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110453687B (en) | 2024-03-19 |
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