CN106812134A - Reserved long term line passes through the plain stake reinforcement system and its construction method of existing lines part - Google Patents
Reserved long term line passes through the plain stake reinforcement system and its construction method of existing lines part Download PDFInfo
- Publication number
- CN106812134A CN106812134A CN201710176331.4A CN201710176331A CN106812134A CN 106812134 A CN106812134 A CN 106812134A CN 201710176331 A CN201710176331 A CN 201710176331A CN 106812134 A CN106812134 A CN 106812134A
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- future date
- plain
- stake
- specified future
- grade separation
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Classifications
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- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
Abstract
The plain stake reinforcement system and its construction method of existing lines part are passed through the present invention relates to reserve long term line.Influenceed by built subway line and surrounding enviroment, later stage subway line construction condition is relatively harsh, passed through in both wired engineerings, conventional stratum pre-reinforcement treatment measures cannot have been met the demand of both wired safe operations.The present invention including haved project lawer and below or top threaded list road at a specified future date, haved project lawer is grade separation point range with the plane projection overlapping region in threaded list road at a specified future date, and plain concrete pile is provided with the grade separation point range；Sleeve valve barrel grouting reinforcing area is provided between haved project lawer and threaded list road at a specified future date.The present invention can effectively improve both wired physical and mechanical parameter indexs that the soil body is pressed from both sides between line at a specified future date, ensure both wired safe operations, with plain stake flexible arrangement, stake footpath is adjustable, the reliable advantage of reservoir treating effect, can be prevented effectively from the Unpredictability of the advanced pre-reinforcement effect in conventional stratum.
Description
Technical field
The present invention relates to Tunnel Engineering technical field, and in particular to a kind of reserved line at a specified future date passes through the plain stake of existing lines part
Reinforcement system and its construction method.
Background technology
For the railway traffic engineering of current cities in China, with the progressively construction and long term of having planned subway line
The continuous encryption of gauze, in the case where built subway line has already taken up main corridor, during line construction at a specified future date, no
Occur in that many passing through has been carried out circuit with can avoiding（Both it is wired）Situation.Because the circuit at a specified future date implementation time is relatively later,
It is in many cases that ought have been carried out circuit just to start to build in the case where operation is opened, engineering is increased to a certain extent
Enforcement difficulty and risk, and may relate to public security, cause engineering and take part in building the extensive concern of each side.
When circuit at a specified future date passes through both wired, the Stratum Loss produced during constructing tunnel is to want with sedimentation and deformation
What method overcame, but the stratum pre-reinforcement measure of routine, reduce construction disturbance both wired operation security cannot be all completely secured,
Therefore have to during both wired implementation, reserved long term line passes through condition.
The content of the invention
It is an object of the invention to provide plain stake reinforcement system and its structure that a kind of reserved line at a specified future date passes through existing lines part
Method, carries out foundation stabilization, and be aided with sleeve by line at a specified future date and the vertical intersection area of haved project lawer using plain concrete pile
Valve pipe grouting and reinforcing measure, can substantially reduce line at a specified future date and pass through both wired construction risk, reach optimal reservoir treating effect.
The technical solution adopted in the present invention is：
Reserved long term line passes through the plain stake reinforcement system of existing lines part, it is characterised in that：
Including haved project lawer and below or top threaded list road at a specified future date, the plane projection in haved project lawer and threaded list road at a specified future date
Overlapping region is grade separation point range, and plain concrete pile is provided with the grade separation point range；
Overlapping region between haved project lawer and threaded list road at a specified future date is stratum consolidation scope.
The reinforcing scope of plain concrete pile extends out 0.5 times of tunnel diameter for grade separation point range, and long term threaded list road is goed deep at stake bottom
0.5 times of tunnel diameter below arch bottom.
Plain concrete pile stake top is located at the 0.5 times of tunnel diameter in haved project lawer vault top, and stake top above section is empty stake,
Processed using clay backfill.
Plain concrete pile uses quincuncial arrangement.
Reinforcing area between haved project lawer and threaded list road at a specified future date, by the mini-valve tube set in tunnel duct piece injected hole
Slip casting is formed in tunnel duct piece behind 0.5 times of diameter range.
Reserved long term line passes through the plain stake reinforcement system construction method of existing lines part, it is characterised in that：
Realized by following steps：
Step one：According to haved project lawer and threaded list road at a specified future date grade separation spot projection region, plain concrete pile reinforcing scope is determined,
In-site measurement setting-out, determines plain concrete pile horizontal layout position；
Step 2：According to place periphery traffic conditions, construction guard fender scope is determined, according to constructing principle in the range of construction infection
Condition, specifies plain concrete pile and sets order, according to live structures concrete condition, using from the close-by examples to those far off, by side to opposite side
Order；
Step 3：According to strata condition, using rotary digging drilling and forming hole, can be set depending on geological condition using full circle swinging stake machine if necessary
Put steel pile casting；
Step 4：It is to be drilled to proceed to timely borehole cleaning after certain depth, and concrete perfusion on request, using low-grade concrete, mix
Solidifying soil influx height exceedes the 0.5 times of tunnel diameter in haved project lawer vault top, and remaining empty stake part is used at sticky earthen backfill
Reason, the compaction treatments of 3m scopes below earth's surface；
Step 5：Every plain concrete pile is all entered using the sequence of construction of drilling and forming hole → borehole cleaning → concrete perfusion → backfill
OK, until completing all plain concrete pile driving constructions；
Step 6：By founding intersection area, the range difference before and after two tunnels by grade separation point is controlled at hundred meters haved project lawer
More than；
Step 7：Haved project lawer is by after grade separation point, sleeve valve barrel grouting consolidation process being carried out to tunnel lower half section；
Step 8：Threaded list road at a specified future date passes through the distance controlling difference of grade separation point by founding intersection area, before and after two tunnels at hundred meters
More than；
Step 9：Haved project lawer is by after grade separation point, sleeve valve barrel grouting consolidation process being carried out to tunnel upper half section.
The present invention has advantages below：
The present invention carries out foundation stabilization in line at a specified future date and the vertical point of intersection of haved project lawer using plain concrete pile, while being aided with sleeve valve
The plant equipment such as pipe grouting and reinforcing, the concrete being related to, pvc pipe cement mortar, rig and crawler crane are conventional material（If
It is standby）, its corresponding size is general type, is easy to processing and manufacturing.The spacing of the plain concrete pile for setting, length, stake footpath, inside are filled out
The cement mortar grade filled can be adjusted accordingly according to site operation situation.By to being related to reserved long term line to pass through both wired
The plain stake consolidation process of condition, can meet the rigors of surrounding enviroment protection, be avoided that line at a specified future date passes through both wired mistakes again
The Stratum Loss that causes in journey and sedimentation and deformation, both cable architecture deformation and metro safety operation cannot ensure etc. it is uncontrollable because
Element, with economic benefit and social benefit higher, is widely used in the engineerings such as urban track traffic, railway, highway
Prospect.
Brief description of the drawings
Fig. 1 reinforces plane of arrangement figure to wear existing linear element stake under line at a specified future date.
Fig. 2 reinforces arrangement profile to wear existing linear element stake under line at a specified future date（A-A sections）.
Fig. 3 reinforces arrangement profile to wear existing linear element stake under line at a specified future date（B-B sections）.
Fig. 4 is the reserved injected hole schematic diagram of duct pieces of shield tunnel.
In figure, 1- haved project lawers, 2- long term threaded lists road, 3- plain concrete piles, 4- mini-valve tubes, 5- both note by wired mini-valve tube
Slurry reinforcing area, 6- long term line sleeve valve barrel grouting reinforcing areas, 7- segment joint lines.
Specific embodiment
With reference to specific embodiment, the present invention will be described in detail.
Line at a specified future date passes through safely both wired stratum pre-reinforcement processing method under theoretically finding out normal condition, existing
Under the conditions of some theoretical levels and construction technology, still there is sizable difficulty, because formation condition is ever-changing with surrounding enviroment,
Both wired safe operation is related to public security simultaneously, it is necessary to ensure that perfectly safe, and the selection of stratum consolidation method must be with
Both wired safe operation, surrounding enviroment and tunnel self structure were safely starting point, while being based on formation characteristics, reached improvement ground
Layer mechanics parameter, the purpose for improving formation stability.Especially close on existing subway station and tunnel, underground commerce synthesis,
Heavy civil engineering and hospital, school and laboratory etc. closely pass through both wired engineerings in the case of laying special stress on protecting object,
The current plain stake reinforcement system for being related to reserved long term line to pass through existing lines part, still needs in line with suiting measures to local conditions, suit the remedy to the case, spirit
The basic principle of application living.
" reserved long term line passes through the plain stake reinforcement system and its Component of existing lines part " of the present invention, mainly
Refer to by plain concrete pile carrying effect+sleeve valve barrel grouting reinforce the composite support system to be formed, with plain pile length, quantity,
The characteristics of stake footpath is flexibly adjustable with arrangement, by the supporting role of plain concrete pile, can effectively realize later stage line construction
During, to be backbreak with damaed cordition there is stratum, the both wired safe operation in top reduces line at a specified future date and passes through both wired
Structure is destroyed, and more can preferably be controlled stratum settlement and then be realized preferable stratum consolidation effect, with economic benefit higher
And social benefit, have wide practical use in the engineerings such as urban track traffic, railway, highway.
Reserved line at a specified future date of the present invention passes through the plain stake reinforcement system of existing lines part, including the He of haved project lawer 1
Below（Or top）Threaded list road 2 at a specified future date, haved project lawer 1 is grade separation with the plane projection overlapping region in threaded list road 2 at a specified future date
Point range, plain concrete pile 3 is provided with the grade separation point range.
The reinforcing scope of plain concrete pile 3 extends out 0.5 times of tunnel diameter for grade separation point range, and long term threaded list road is goed deep at stake bottom
0.5 times of tunnel diameter below 2 arch bottoms.The stake top of plain concrete pile 3 is located at the 0.5 times of tunnel diameter in the vault of haved project lawer 1 top, stake
Top above section is empty stake, is processed using clay backfill, or other meet the soil body of design requirement.Simultaneously it is ensured that backfill is close
It is real, also need to meet backfill compaction requirement in the range of below ground 3m.Plain concrete pile 3 uses quincuncial arrangement, stake footpath d and
Spacing b can be adjusted suitably as the case may be.Plain concrete pile 3 sets order, should be according to existing in the range of construction infection
Structures situation determines, is used according to the specific distribution situation of important structures and from the close-by examples to those far off, by the order of side to opposite side applied
Work.The pore-forming technique of plain concrete pile 3 should ensure that stratum stabilization, can use mud off, spiral-digging pore technique, while to ensure
Pore-forming effect simultaneously reduces stratum collapse hole, should regard strata condition and steel pile casting is used in the following certain limit of earth's surface.Pile foundation pore-forming is complete
Cheng Hou, it should be noted that borehole cleaning treatment, it is ensured that stake is long to reach design requirement, and timely concrete perfusion, filling concrete process should be continuous
Carry out, strictly control situations such as broken pile, necking down.
Grouting and reinforcing region is provided between haved project lawer 1 and threaded list road 2 at a specified future date, is set by tunnel duct piece injected hole
Mini-valve tube 4 in section of jurisdiction, slip casting is formed in 0.5 times of diameter range behind.
Before haved project lawer 1 is constructed, plain concrete pile 3 is set in advance in vertical point of intersection, when haved project lawer 1 passes through grade separation
After point, the grouting and reinforcing of mini-valve tube 4 is carried out to the lower half section of haved project lawer 1, form reinforcing area, reserved long term threaded list road 2 and lead to
Cross condition.
Construction method of the invention is comprised the following steps：
Step one：According to haved project lawer 1 and the grade separation spot projection region of threaded list road 2 at a specified future date, determine that plain concrete pile 3 reinforces model
Enclose, at the scene surveying and locating, determine the horizontal layout position of plain concrete pile 3；
Step 2：According to place periphery traffic conditions, construction guard fender scope is determined, according to constructing principle in the range of construction infection
Condition, specifies plain concrete pile 3 and sets order, according to live structures concrete condition, can be using from the close-by examples to those far off, by side to another
The order of side；
Step 3：According to strata condition, using rotary digging drilling and forming hole（If necessary can be using full circle swinging stake machine）, set depending on geological condition
Put steel pile casting；
Step 4：It is to be drilled to proceed to timely borehole cleaning after certain depth, and concrete perfusion on request, using low-grade concrete（Can
Using C20）, highly more than the 0.5 times of tunnel diameter in the vault of haved project lawer 1 top, remaining empty stake part uses filling concrete
Sticky earthen backfill treatment, the compaction treatments of 3m scopes below earth's surface；
Step 5：Every plain concrete pile 3 is all using the sequence of construction of drilling and forming hole → borehole cleaning → concrete perfusion → backfill
Carry out, until complete all plain concrete piles 3 constructing；
Step 6：By founding intersection area, the range difference before and after two tunnels by grade separation point is controlled at hundred meters haved project lawer 1
More than；
Step 7：Haved project lawer 1 is processed by after grade separation point, carrying out the grouting and reinforcing of mini-valve tube 4 to tunnel lower half section；
Step 8：By founding intersection area, the range difference before and after two tunnels by grade separation point is controlled at hundred meters in threaded list road 2 at a specified future date
More than；
Step 9：Haved project lawer 2 is processed by after grade separation point, carrying out the grouting and reinforcing of mini-valve tube 4 to tunnel upper half section.
The present invention is processed both wired with the vertical point of intersection of line at a specified future date using plain concrete pile, while be aided with sleeve valve barrel grouting adding
Gu measure, when can realize that line at a specified future date passes through both wired constructions, current situation is gone out there is the folder soil body between Stratum Loss or upper and lower tunnel
In the case of portion cavity, both wired safe operations.The arrangement spacing of plain concrete pile, length, stake footpath can be according to site operation
Situation is adjusted accordingly, with flexible and changeable, strong adaptability, it is safe and reliable the features such as.The invention provides a kind of line at a specified future date
Both wired stratum consolidation new approaches are passed through, existing line at a specified future date is enriched and is passed through both wired stratum pre-reinforcement treatment measures.
Foundation stabilization is carried out using plain concrete pile in line at a specified future date and haved project lawer vertical point of intersection in advance, tunnel by when be aided with sleeve valve
Pipe slip casting measure, by the supporting role of plain concrete pile, meets the top demand that both wired metro safety is runed, in line at a specified future date
Closely pass through to have in both wired engineerings and preferably use effect, vertical small-clear-distance tunnel builds face under can meeting specified conditions
The rigors for facing, to ensure to realize feasible engineering technology, economical rationality, risk and the duration is controllable, quality and safety is reliable
It is required that providing sufficiently guarantee.
Present disclosure is not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And any equivalent conversion taken technical solution of the present invention, it is claim of the invention and is covered.
Claims (6)
1. the plain stake reinforcement system that long term line passes through existing lines part is reserved, it is characterised in that：
Including haved project lawer（1）Below or top threaded list road at a specified future date（2）, haved project lawer（1）With threaded list road at a specified future date
（2）Plane projection overlapping region be grade separation point range, be provided with plain concrete pile at the grade separation point range（3）；
Haved project lawer（1）With threaded list road at a specified future date（2）Between overlapping region be stratum consolidation scope.
2. reserved line at a specified future date according to claim 1 passes through the plain stake reinforcement system of existing lines part, it is characterised in that：
Plain concrete pile（3）Reinforcing scope extend out 0.5 times of tunnel diameter for grade separation point range, the deep long term threaded list road in stake bottom
（2）0.5 times of tunnel diameter below arch bottom.
3. reserved line at a specified future date according to claim 1 passes through the plain stake reinforcement system of existing lines part, it is characterised in that：
Plain concrete pile（3）Stake top is located at haved project lawer（1）The 0.5 times of tunnel diameter in vault top, stake top above section is sky
Stake, is processed using clay backfill.
4. reserved line at a specified future date according to claim 1 passes through the plain stake reinforcement system of existing lines part, it is characterised in that：
Plain concrete pile（3）Using quincuncial arrangement.
5. reserved line at a specified future date according to claim 1 passes through the plain stake reinforcement system of existing lines part, it is characterised in that：
Haved project lawer（1）With threaded list road at a specified future date（2）Between reinforcing area, by tunnel duct piece injected hole set sleeve valve
Pipe（4）Slip casting is formed in tunnel duct piece behind 0.5 times of diameter range.
6. the plain stake reinforcement system construction method that long term line passes through existing lines part is reserved, it is characterised in that：
Realized by following steps：
Step one：According to haved project lawer（1）With threaded list road at a specified future date（2）Grade separation spot projection region, determines plain concrete pile（3）Plus
Gu scope, surveying and locating, determines plain concrete pile at the scene（3）Horizontal layout position；
Step 2：According to place periphery traffic conditions, construction guard fender scope is determined, according to constructing principle in the range of construction infection
Condition, specifies plain concrete pile（3）Order is set, according to live structures concrete condition, using from the close-by examples to those far off, by side to another
The order of side；
Step 3：According to strata condition, using rotary digging drilling and forming hole, can be set depending on geological condition using full circle swinging stake machine if necessary
Put steel pile casting；
Step 4：It is to be drilled to proceed to timely borehole cleaning after certain depth, and concrete perfusion on request, using low-grade concrete, mix
Solidifying soil influx height exceedes haved project lawer（1）The 0.5 times of tunnel diameter in vault top, remaining empty stake part is using sticky earthen backfill
Treatment, the compaction treatments of 3m scopes below earth's surface；
Step 5：Every plain concrete pile（3）Construction all using drilling and forming hole → borehole cleaning → concrete perfusion → backfill is suitable
Sequence is carried out, until completing all plain concrete piles（3）Construction；
Step 6：Haved project lawer（1）By founding intersection area, the range difference before and after two tunnels by grade separation point is controlled hundred
It is more than rice；
Step 7：Haved project lawer（1）By after grade separation point, mini-valve tube being carried out to tunnel lower half section（4）Grouting and reinforcing treatment；
Step 8：Threaded list road at a specified future date（2）By founding intersection area, by the distance controlling difference of grade separation point hundred before and after two tunnels
It is more than rice；
Step 9：Haved project lawer（2）By after grade separation point, mini-valve tube being carried out to tunnel upper half section（4）Grouting and reinforcing treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176331.4A CN106812134A (en) | 2017-03-23 | 2017-03-23 | Reserved long term line passes through the plain stake reinforcement system and its construction method of existing lines part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710176331.4A CN106812134A (en) | 2017-03-23 | 2017-03-23 | Reserved long term line passes through the plain stake reinforcement system and its construction method of existing lines part |
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| Publication Number | Publication Date |
|---|---|
| CN106812134A true CN106812134A (en) | 2017-06-09 |
Family
ID=59115260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710176331.4A Pending CN106812134A (en) | 2017-03-23 | 2017-03-23 | Reserved long term line passes through the plain stake reinforcement system and its construction method of existing lines part |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301842A (en) * | 2018-03-13 | 2018-07-20 | 中铁建大桥工程局集团第二工程有限公司 | A kind of fixing device and construction method for controlling duct pieces of shield tunnel floating |
| CN111236949A (en) * | 2020-01-17 | 2020-06-05 | 中铁二院工程集团有限责任公司 | Small-angle cross tunnel construction method |
| CN112459796A (en) * | 2020-11-12 | 2021-03-09 | 上海隧道工程有限公司 | Construction method for pipe jacking crossing section crossing underground structure building |
| CN113187507A (en) * | 2021-05-17 | 2021-07-30 | 中铁十二局集团第四工程有限公司 | Grouting reinforcement method for deformation control of underground excavation tunnel underpass operation subway section |
| CN113863940A (en) * | 2021-09-10 | 2021-12-31 | 中建三局基础设施建设投资有限公司 | Construction method for starting and receiving shallow earth covering of ultra-large-diameter slurry shield to prevent heaving |
| CN114411761A (en) * | 2022-02-28 | 2022-04-29 | 甘肃第七建设集团股份有限公司 | Advanced pre-support system for planned subway tunnel during construction of newly-built building and pre-support construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301842A (en) * | 2018-03-13 | 2018-07-20 | 中铁建大桥工程局集团第二工程有限公司 | A kind of fixing device and construction method for controlling duct pieces of shield tunnel floating |
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| CN111236949A (en) * | 2020-01-17 | 2020-06-05 | 中铁二院工程集团有限责任公司 | Small-angle cross tunnel construction method |
| CN111236949B (en) * | 2020-01-17 | 2021-08-06 | 中铁二院工程集团有限责任公司 | Small-angle cross tunnel construction method |
| CN112459796A (en) * | 2020-11-12 | 2021-03-09 | 上海隧道工程有限公司 | Construction method for pipe jacking crossing section crossing underground structure building |
| CN113187507A (en) * | 2021-05-17 | 2021-07-30 | 中铁十二局集团第四工程有限公司 | Grouting reinforcement method for deformation control of underground excavation tunnel underpass operation subway section |
| CN113863940A (en) * | 2021-09-10 | 2021-12-31 | 中建三局基础设施建设投资有限公司 | Construction method for starting and receiving shallow earth covering of ultra-large-diameter slurry shield to prevent heaving |
| CN114411761A (en) * | 2022-02-28 | 2022-04-29 | 甘肃第七建设集团股份有限公司 | Advanced pre-support system for planned subway tunnel during construction of newly-built building and pre-support construction method |
| CN114411761B (en) * | 2022-02-28 | 2023-09-22 | 甘肃第七建设集团股份有限公司 | Advanced pre-supporting system and method for subway tunnel to be built in new building construction |
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Application publication date: 20170609 |