CN206801564U - The hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance - Google Patents
The hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance Download PDFInfo
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- CN206801564U CN206801564U CN201720598656.7U CN201720598656U CN206801564U CN 206801564 U CN206801564 U CN 206801564U CN 201720598656 U CN201720598656 U CN 201720598656U CN 206801564 U CN206801564 U CN 206801564U
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- Prior art keywords
- jack
- protective case
- support structure
- worn under
- hydraulic pressure
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Abstract
It the utility model is related to the hydraulic pressure support structure that existing station is worn under a kind of large span running tunnel super close distance; including jack, protective case, elongated steel plate, deep floor and flexible liner; jack is multiple; each jack from can automatic regulation type hydraulic jack; the base of each jack is installed in the stopper slot of small pilot tunnel strip footing, and elongated steel plate and deep floor are set on jack base；Protective case is respectively provided with the outside of each jack, the telescopic end of jack is encapsulated in inside protective case；The upper end of each jack and protective case is withstood on both on the bottom plate of cable architecture by flexible liner.Both wired sedimentation can effectively be controlled using this hydraulic pressure support structure, the safety coefficient of construction is worn under raising, accelerating construction progress, reduce construction costs, mechanical property between enhancing structure, ensure the compactness of arch crown part, the technical barrier of building up station is worn under the large span section tunnel for solving to face at present.
Description
Technical field
Constructing metro tunnel technical field is the utility model is related to, under especially a kind of large span running tunnel super close distance
Wear the hydraulic pressure support structure at existing station.
Background technology
With the utilization of the underground space, subway turns into a kind of irreplaceable trip mode, while with subway line
Increase, it may appear that worn under newly-built circuit, side is worn, on wear building up station.Existing subway line, particularly bored tunnel are wherein worn down
Under wear building up station technical difficulty and risk highest.It is former with the disturbance and deformation of soil layer in the work progress of newly-built circuit
Some stress systems are destroyed, and can be deformed on existing line, after deformation reaches to a certain degree, can be produced destructive
Influence, the normal operation of existing line will be influenceed.And the generation process of accident is irreversible, later stage repairing difficulty is big, applies
Social influence is severe caused by work.
Newly-built circuit particularly large span running tunnel, under to wear building up station traditional design method be usually flat top wall,
The span of flat top wall technological requirement list pilot tunnel is not more than 4 meters, more for big degree of collapsing section flat top wall technique chamber, and two linings are applied
As when tear that support is complicated and structure stress conversion has problem open, engineering worn under general this type often turn into and limit whole engineering and enter
The key node of exhibition, so how to improve down the safety coefficient for wearing operation and construction speed is particularly important.
Utility model content
The purpose of this utility model is to make up in place of the deficiencies in the prior art, there is provided one kind can improve speed of application and
The hydraulic pressure support structure at existing station is worn under the large span running tunnel super close distance of security.
The purpose of this utility model is realized by following technological means：
The hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance, it is characterised in that：Including thousand
Jin top, protective case, elongated steel plate, deep floor and flexible liner, described jack are multiple, and it is along small pilot tunnel longitudinal axis
Direction is set, each jack from can automatic regulation type hydraulic jack, the base of each jack is installed in small
In the stopper slot of pilot tunnel strip footing, and the base of jack and pre-embedded steel slab fixation, set on jack base elongated
Steel plate and deep floor；Protective case is respectively provided with the outside of each jack, the telescopic end of jack is encapsulated in inside protective case, and
Protective case does shell nosing treatment in jack end and jack colligation；The upper end of each jack and protective case passes through flexible liner
Pad is withstood on both on the bottom plate of cable architecture.
Moreover, described protective case is made of elastomeric material.
Moreover, the protective case outer layer in each jack is respectively provided with three fill concrete pipes, in reserved backfill Guan Shangshe
Three slurry mouths that overflow are put, the Opening pressure of three slurry mouths that overflow increases successively from the bottom up, and stop grouting plug is set in reserved backfill bottom of the tube
And backing plate.
Moreover, a pressure sensor is arranged in each hydraulic jack, pressure sensor connection control valve group,
Synchronous hydraulic pumping plant is simultaneously connected through signal wire with PLC Multi-thread control devices.
The advantages of the utility model and good effect are：
1st, the utility model is applied to wear the way of building up station under multiple track tunnel, by using hydraulic pressure support to small pilot tunnel
Structure, reduce the difficulty of construction, accelerate construction speed.
2nd, the utility model sets flexible protective casing on the outside of hydraulic jack, and the protective case airtight performance is good, can carry
The service life of high jack, also, after the completion of agent structure applies, protective case is reusable, therefore can be greatly reduced and set
Prepare and make and maintenance cost.
3rd, the utility model is respectively provided with three concretes backfill pipe around each jack, ensures backfill from bottom up successively
Backfill, it is ensured that the compactness of backfill.
4th, the utility model arranges pressure sensor in each hydraulic jack, and pressure sensor is through control valve
Group, synchronous hydraulic pumping plant are connected with PLC Multi-thread control devices.Operation is worn under whole, the top lift of jack is digitized
Monitoring, and otherness regulation jacking can be carried out according to both wired structure differential settlements, it is ensured that both be deposited in could for cable architecture
Within the scope of control.
5th, the utility model is the hydraulic pressure support structure that existing station is worn under a kind of large span running tunnel super close distance, is used
This structure can effectively control both wired sedimentation, and the safety coefficient of construction is worn under raising, accelerating construction progress, reduces engineering
Cost, the mechanical property between enhancing structure, ensure the compactness of arch crown part, solve under the large span section tunnel that faces at present
Wear the technical barrier of building up station.
Brief description of the drawings
Fig. 1 is general illustration of the present utility model；
Fig. 2 is fill concrete built-in pipe schematic diagram at jack.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with the accompanying drawings；It should be noted that the present embodiment is narrative
, it is not limited, it is impossible to which the scope of protection of the utility model is limited with this.
The hydraulic pressure support structure at existing station, including jack 4, protective case are worn under a kind of large span running tunnel super close distance
2nd, elongated steel plate 8, deep floor 7 and flexible liner 3, described jack are multiple, and it sets along small pilot tunnel longitudinal axis direction
Put, each jack from can automatic regulation type hydraulic jack.
The base of each jack is installed in the stopper slot of small pilot tunnel strip footing 10, and the base of jack with it is pre-
Bury the fixation of steel plate 9, elongated steel plate and deep floor be set on jack base, come fix and balanced hydraulic jack produce
Side force.
Protective case is respectively provided with the outside of each jack, protective case requires that airtight performance is good, and is elastomeric material.It is very heavy
The telescopic end on top is encapsulated in inside protective case, is prevented the soil body and concrete slurry from hydraulic jack is caused to corrode and destroyed, is carried
The service life of high jack.Protective case does shell nosing treatment in jack end and jack colligation, it is ensured that during backfill slip casting, thousand
Jin top can normally provide top lift.
The upper end of each jack and protective case is withstood on the bottom plate 1 of both cable architectures by flexible liner, prevents liquid
Pressure jack produces stress concentration and both cable architecture bottom plates is damaged.
Three fill concrete pipes 5 are respectively provided with the protective case outer layer of each jack, three are set on reserved backfill pipe
Individual excessive slurry mouth 15,16,17, to ensure that filling is closely knit, improves the stress performance of structure, and the Opening pressures of three slurry mouths that overflow are from lower past
On increase successively, in reserved backfill bottom of the tube, stop grouting plug 18 and backing plate 19 are set.
Arrange a pressure sensor 6 in each hydraulic jack, it is pressure sensor connection control valve group 11, same
Stepped hydraulic pumping plant 12 is simultaneously connected 14 through signal wire 13 with PLC Multi-thread control devices.During Initial Stage Construction, the numerical value of setting load should not mistake
Greatly, should be to meet to form existing structure bottom plate effectively support for principle, while keep a close eye on building up station settlement observation value.
In small pilot tunnel after jack installation, and it is in the milk after backfill completion, carries out the excavation in section main track tunnel.
The use step of this hydraulic pressure support structure is：
Strip footing is applied in small pilot tunnel, when strip footing is constructed, in hydraulic jack correspondence position pre-embedded steel slab, and
Make jack base stopper slot.
The position of jack is released by survey crew, Zhi Jinhang at the beginning of small pilot tunnel is abolished, is preferably cut from water drilling, reduction pair
Both wired disturbance, it pneumatic pick can be used to be abolished when appropriate, abolish hole diameter preferably than hydraulic jack nominal diameter
Big 15cm or so.
Artificial digging, jack is installed, jack end is arranged in the stopper slot of strip footing, and other end passes through soft
Property pad withstand on both on the bottom plate of cable architecture, it is ensured that the perpendicularity of jack when installing jack, orifice position is carried out
Closed processes, jack set hydraulic jack protective case before hole installation is entered on the outside of it, and protective case requires that airtight performance is good
It is good, and be elastomeric material, in jack end and jack colligation, do shell nosing treatment, it is ensured that during backfill slip casting, jack can
It is normal that top lift is provided.
Meanwhile fill concrete pipe is set in protective case outer layer, three slurry mouths that overflow are set on reserved backfill pipe, to ensure
Fill closely knit, improve the stress performance of structure, three slurry mouths that overflow set Opening pressures, be followed successively by from the bottom up 0.2M, 0.5Mpa,
1.0Mpa；In reserved backfill bottom of the tube, stop grouting plug and backing plate are set.Set three concretes to backfill pipe around each jack, ensure back
Fill out from bottom and up backfill successively, it is ensured that the compactness of backfill.
Jack from can automatic regulation type hydraulic jack, in the small pilot tunnel construction stage, hydraulic jack is provided
Initial top lift, the size of initial top lift should be can control pilot drive and both wired be settled into standard；Jack has jacked
Into afterwards, to small pilot tunnel vault slotting position, arrangement backfill filling system, reinforce because of crack caused by excavation, and carry out aperture
Seal operation.
Claims (4)
1. the hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance, it is characterised in that：Including very heavy
Top, protective case, elongated steel plate, deep floor and flexible liner, described jack is multiple, and it is along small pilot tunnel longitudinal axis side
To setting, each jack from can automatic regulation type hydraulic jack, the base of each jack is installed in small lead
In the stopper slot of hole strip footing, and the base of jack and pre-embedded steel slab fixation, elongated steel is set on jack base
Plate and deep floor；Protective case is respectively provided with the outside of each jack, the telescopic end of jack is encapsulated in inside protective case, and is protected
Sheath does shell nosing treatment in jack end and jack colligation；The upper end of each jack and protective case passes through flexible liner
Withstand on both on the bottom plate of cable architecture.
2. the hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance according to claim 1,
It is characterized in that：Described protective case is made of elastomeric material.
3. the hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance according to claim 1,
It is characterized in that：Three fill concrete pipes are respectively provided with the protective case outer layer of each jack, are set on reserved backfill pipe
Three slurry mouths that overflow, the Opening pressures of three slurry mouths that overflow increase successively from the bottom up, reserved backfill bottom of the tube set stop grouting plug and
Backing plate.
4. the hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance according to claim 1,
It is characterized in that：Arrange a pressure sensor in each hydraulic jack, it is pressure sensor connection control valve group, same
Stepped hydraulic pumping plant is simultaneously connected through signal wire with PLC Multi-thread control devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720598656.7U CN206801564U (en) | 2017-05-26 | 2017-05-26 | The hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720598656.7U CN206801564U (en) | 2017-05-26 | 2017-05-26 | The hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801564U true CN206801564U (en) | 2017-12-26 |
Family
ID=60742000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720598656.7U Expired - Fee Related CN206801564U (en) | 2017-05-26 | 2017-05-26 | The hydraulic pressure support structure at existing station is worn under a kind of large span running tunnel super close distance |
Country Status (1)
| Country | Link |
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| CN (1) | CN206801564U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109537462A (en) * | 2018-12-06 | 2019-03-29 | 鄂宇 | A kind of mistake wears the Construction Support device and method of highway structures |
| CN109869167A (en) * | 2019-04-15 | 2019-06-11 | 中南大学 | A kind of anti-surrender servo-system of tunnel steel arch frame and deformation control method |
| CN114183151A (en) * | 2021-12-01 | 2022-03-15 | 中铁隧道局集团有限公司 | Device for compensating ground settlement |
-
2017
- 2017-05-26 CN CN201720598656.7U patent/CN206801564U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109537462A (en) * | 2018-12-06 | 2019-03-29 | 鄂宇 | A kind of mistake wears the Construction Support device and method of highway structures |
| CN109869167A (en) * | 2019-04-15 | 2019-06-11 | 中南大学 | A kind of anti-surrender servo-system of tunnel steel arch frame and deformation control method |
| CN109869167B (en) * | 2019-04-15 | 2024-03-22 | 中南大学 | Tunnel steel arch anti-yielding servo system and deformation control method |
| CN114183151A (en) * | 2021-12-01 | 2022-03-15 | 中铁隧道局集团有限公司 | Device for compensating ground settlement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 Termination date: 20180526 |