CN107503366A - Small separation grouting method - Google Patents
Small separation grouting method Download PDFInfo
- Publication number
- CN107503366A CN107503366A CN201710775102.4A CN201710775102A CN107503366A CN 107503366 A CN107503366 A CN 107503366A CN 201710775102 A CN201710775102 A CN 201710775102A CN 107503366 A CN107503366 A CN 107503366A
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- China
- Prior art keywords
- small separation
- slip casting
- slurry
- grouting method
- small
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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
- E02D25/00—Joining caissons, sinkers, or other units to each other under water
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- 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
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/073—Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Or Underwater Handling Of Building Materials (AREA)
Abstract
The present invention relates to seabed immersed tube FS final spice construction field, particularly a kind of small separation grouting method, it includes step：A, in two box hats of FS final spice the end of waterstop is installed several small separations is set respectively, some small separations on single box hat are interconnected to form cyclic structure and small separation deposition path and waterstop deposition path overlap；B, the concrete perfusion slurry into the small separation；The goal of the invention of the present invention is to provide a kind of small separation grouting method for when carrying out flexible tensioning to FS final spice box hat, preventing the box hat at waterstop from deforming.
Description
Technical field
The present invention relates to seabed immersed tube FS final spice construction field, particularly a kind of small separation grouting method.
Background technology
The very big large bridge of some spans frequently includes seabed tunnel section, seabed tunnel connected by several immersed tube and
Into the seabed tunnel that the application is related to, in two final immersed tube joints, also plays same in addition to several immersed tube
When connect both sides immersed tube " sandwich immersed tunnel structure " (be also FS final spice, the FS final spice is also immersed tube, is only one section
More special immersed tube, after this section of immersed tube docks with the immersed tube at its both ends, seabed tunnel insertion).
The structure of the FS final spice is more special, the effect of this structure of FS final spice be in order to connect two immersed tube,
Seabed tunnel is penetrated, must be again flexible connection between two immersed tube being connected after insertion, to discharge stress, so most
Terminating head is formed by two symmetrically arranged box hat flexible dockings, and joint sets waterstop, there is several processes here：Box hat
Need to transport after finalization of the manufacture to pour a little；To casting concrete in box hat；Box hat (the shape poured has been completed described in lifting
Into FS final spice) installed.
These three processes, the two box hat sections of temporary locking are required for, it is formed overall structure in work progress,
Ensure transport reach after box hat precision, and after the completion of pouring FS final spice size precision, ensureing can in installation process
Accurately connect immersed tube.
So there is provided a kind of method of the two box hats of temporary locking, while and can enough facilitates FS final spice to install
After release temporary locking, make the flexible connection of two box hat sections, referred to herein as " flexible tensioning ".
This method is after setting waterstop between two section box hats, by setting steel in the box hat structure of waterstop both sides
Beam, then to steel Shu Jinhang tensioning, after tensioning to a certain extent, two section box hats are relative to be locked.
And this process, very big extruding force can be produced to waterstop, waterstop can compress, while sealing brings box hat
Counter-force it is also very big, the box hat at this is easily deformed, so needing a kind of method for preventing the box hat deformation at this.
The content of the invention
The problem of existing for prior art, goal of the invention of the invention are that provide one kind enters to FS final spice box hat
During the flexible tensioning of row, the small separation grouting method that prevents the box hat at waterstop from deforming.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of small separation grouting method, it is characterised in that including step：.
A, in two box hats of FS final spice the end of waterstop is installed several small separations is set respectively, on single box hat
Some small separations be interconnected to form cyclic structure and small separation deposition path and waterstop deposition path overlap；
B, the concrete perfusion slurry into the small separation.
The small separation by setting, then before waterstop installation, slip casting is carried out to small separation, after concrete setting,
The box hat of this part can reach higher rupture strength and compression strength, then carry out the flexible tensioning, effectively prevent from stopping
Box hat deformation at water band, can then be carried out after the relative locking of two box hats subsequent handling (including other separations are poured,
Form FS final spice).
As the preferred scheme of the present invention, several small separations on single box hat are interconnected, and can make multiple separations
Continuous placing, while the gas in single separation can continue to move to next when that can not be discharged from corresponding steam vent
Small separation, finally discharged from the steam vent of the small separation finally poured, make slip casting effect more preferable, follow-up small separation intensity is more
Height, the support to waterstop are more stable.
As the preferred scheme of the present invention, in step B, by the way of mud jacking since underlying small separation under
Up slip casting, it is easy to the discharge of gas, also has compaction to grout material.
As the preferred scheme of the present invention, in step B, the small separation of gallery center is to two runway directions from bottom plate
Slip casting, top plate is arrived again through side wall with disposed slurry and then is moved from top plate both sides to gallery center, slip casting process is more symmetrical, ensures
The stress of box hat, reduce slip casting process and deformed to caused by box hat, ensure the precision of box hat size.
As the preferred scheme of the present invention, in step A, at least one injected hole and one are provided with single small separation
Individual steam vent, follow-up slip casting observation, and mobile slip casting position are convenient for, makes slip casting effect more preferable.
As the preferred scheme of the present invention, in step B, by just slip casting position next steam vent or injected hole to note
Pulpous state state is observed, and the steam vent for outflowing slurry is closed when there is slurry to be flowed out from steam vent.
As the preferred scheme of the present invention, in step B, when slurry liquid level enters next order grouting port, stop currently
Grouting port slip casting, Grouting Pipe is connected into next order grouting port and carries out slip casting, the difficulty of smaller slip casting, while ensure the effect of slip casting
Fruit.
As the preferred scheme of the present invention, during the last small separation of slip casting, the setting at the grout outlet of last small separation
Useless slurry cylinder, when the denseness of the slurry of outflow reaches and be the same before pouring into, close grout outlet, ensure all in small separations without empty and
Uniform quality, concrete and small separation are combined more preferable to the support effect of waterstop.
As the preferred scheme of the present invention, in step B, during slip casting, the runway of left and right two sets the scope of operation and synchronously carried out respectively
Slip casting, improve slip casting efficiency.
As the preferred scheme of the present invention, final compression strength >=50Mpa, makes flexibility after the concrete slurry solidification
Support during tensioning to waterstop is more preferable.
The beneficial effects of the invention are as follows：
The small separation by setting, then before waterstop installation, slip casting is carried out to small separation, after concrete setting,
The box hat of this part can reach higher rupture strength and compression strength, then carry out the flexible tensioning, effectively prevent from stopping
Box hat deformation at water band, can then be carried out after the relative locking of two box hats subsequent handling (including other separations are poured,
Form FS final spice).
Brief description of the drawings
Fig. 1 is the septulum cabin position view of the present invention；
Fig. 2 is the small separation deposition path figure of the present invention；
Fig. 3 is the steam vent and injected hole position view of the present invention.
Marked in figure：1- immersed tube, 2- box hats, the small separations of 3-, 4- waterstops, 5- injected holes, 6- steam vents.
Embodiment
With reference to embodiment and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, the technology that all content of the invention based on the present invention are realized is equal
Belong to the scope of the present invention.
Embodiment 1
A kind of small separation (the small structure of separation 3 such as Fig. 1,2) grouting method, it includes step：.
A, several are set respectively in the end of two box hats 2 installation waterstop 4 of FS final spice (both ends connect immersed tube 1)
Small separation 3, some small separations 3 on single box hat 2 are interconnected to form cyclic structure and the deposition path of small separation 3 and only
The deposition path of water band 4 overlaps, and several small separations 3 on single box hat 2 are interconnected and (form an annular tube coupling), single
Small separation 3 on be provided with least one injected hole 5 and a steam vent 6 (such as Fig. 3), injected hole 5 was around the tube coupling one week
Spacing 1m sets one, and steam vent 6 is close to the supporting settings of injected hole 525cm, and the center of injected hole 5 and the center of steam vent 6 are away from steel
The edge 10cm of shell 2, the perforate size Ф=50mm of injected hole 5, the perforate size Ф=24mm of steam vent 6；
B, two runways of left and right set the scope of operation and synchronously carry out slip casting (slurry cooperation such as table 1, the performance parameter of slurry respectively
Such as table 2, corresponding pulper performance parameter such as table 3, grouting pump performance parameter such as table 4), irrigate coagulation into the small separation 3
Soil paste material, the complete procedure of specific slip casting include mixing slurry and slip casting, first add water to dally several minutes before mixing slurry, make mixer inwall
It is sufficiently humidified so as to, ponding is clean；Load weighted water is poured into mixer, cement is poured into while stirring afterwards, is stirred for 3~5
Minute is until uniformly；The additive for being dissolved in water is poured into mixer, stirs 5~15 minutes, is subsequently poured into slurry tube；Pour into Sheng slurry
The cement mortar of cylinder should try one's best and pump at once, and otherwise mixer must not stop stirring halfway；During slip casting, from position by the way of mud jacking
Small separation 3 in lower section starts slip casting from lower to upper, and specifically, the small separation 3 of gallery center is to two runways from bottom plate
Direction slip casting, top plate is arrived again through side wall with disposed slurry and then is moved from top plate both sides to gallery center, the septulum of single box hat 2
Slip casting 0.616m × the 0.522m of cabin 3 × 91.18m=29.319m3,Specifically, by just slip casting position next steam vent 6 or
Injected hole 5 is observed to slip casting state, and the steam vent 6 for outflowing slurry is closed when there is slurry to be flowed out from steam vent 6, works as slurry
When body fluid face enters next order grouting port, stop current grouting port slip casting, Grouting Pipe is connected into next order grouting port is carried out
Slip casting, during the last small separation 3 of slip casting, useless slurry cylinder, the denseness of the slurry of outflow are set at the grout outlet of last small separation 3
When before reaching and pouring into, grout outlet is closed, continues slip casting, until grouting pressure reaches 0.5~0.7MPa, finally closes note
Stop pressurization after starching valve, slurry is given small separation 3 and certain prestressing force is provided, make the structure of box hat 2 corresponding to small separation 3 to only
The resistance to compression effect of water band 4 is more preferable.
Table 1 (slurry match ratio)
Table 2 (performance parameter of slurry)
Table 3 (pulper performance parameter)
Table 4 (grouting pump performance parameter figure)
Claims (10)
1. a kind of small separation grouting method, it is characterised in that including step：
A, several small separations are set respectively in the end of two box hats installation waterstop of FS final spice, if on single box hat
The dry small separation is interconnected to form cyclic structure and small separation deposition path and waterstop deposition path overlap；
B, the concrete perfusion slurry into the small separation.
2. small separation grouting method according to claim 1, it is characterised in that several small separation phases on single box hat
It is intercommunicated.
3. small separation grouting method according to claim 1, it is characterised in that in step B, from position by the way of mud jacking
Small separation in lower section starts slip casting from lower to upper.
4. small separation grouting method according to claim 3, it is characterised in that in step B, the gallery center from bottom plate
Small separation to two runway direction slip castings, arrive top plate again through side wall with disposed slurry and then moved from top plate both sides to gallery center
It is dynamic.
5. small separation grouting method according to claim 2, it is characterised in that in step A, be all provided with single small separation
It is equipped with least one injected hole and a steam vent.
6. small separation grouting method according to claim 5, it is characterised in that in step B, by just in slip casting position
Next steam vent or injected hole are observed to slip casting state, and the row for outflowing slurry is closed when there is slurry to be flowed out from steam vent
Stomata.
7. small separation grouting method according to claim 6, it is characterised in that in step B, when slurry liquid level enter it is next
During order grouting port, stop current grouting port slip casting, Grouting Pipe is connected into next order grouting port carries out slip casting.
8. small separation grouting method according to claim 2, it is characterised in that during the last small separation of slip casting, last
Small separation grout outlet at useless slurry cylinder is set, when the denseness of the slurry of outflow reaches and is the same before pouring into, closing grout outlet.
9. small separation grouting method according to claim 4, it is characterised in that in step B, during slip casting, left and right two is driven a vehicle
Road sets the scope of operation and synchronously carries out slip casting respectively.
10. small separation grouting method according to claim 1, it is characterised in that final after the concrete slurry solidification
Compression strength >=50Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775102.4A CN107503366A (en) | 2017-08-31 | 2017-08-31 | Small separation grouting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710775102.4A CN107503366A (en) | 2017-08-31 | 2017-08-31 | Small separation grouting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107503366A true CN107503366A (en) | 2017-12-22 |
Family
ID=60694508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710775102.4A Pending CN107503366A (en) | 2017-08-31 | 2017-08-31 | Small separation grouting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107503366A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183851A (en) * | 2018-09-04 | 2019-01-11 | 中交航局第二工程有限公司 | A kind of underwater installation method of shell-type immersed tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11152763A (en) * | 1997-11-21 | 1999-06-08 | Penta Ocean Constr Co Ltd | Immersed-tube joint method |
| CN106801439A (en) * | 2017-01-12 | 2017-06-06 | 南昌市政公用工程项目管理有限公司 | A kind of longitudinal limiting device being applied in immersed tube tunnel tube coupling joint |
| CN106988346A (en) * | 2017-03-24 | 2017-07-28 | 中国交通建设股份有限公司 | Immersed tube tunnel final joint and method for prefabricating, installation method |
-
2017
- 2017-08-31 CN CN201710775102.4A patent/CN107503366A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11152763A (en) * | 1997-11-21 | 1999-06-08 | Penta Ocean Constr Co Ltd | Immersed-tube joint method |
| CN106801439A (en) * | 2017-01-12 | 2017-06-06 | 南昌市政公用工程项目管理有限公司 | A kind of longitudinal limiting device being applied in immersed tube tunnel tube coupling joint |
| CN106988346A (en) * | 2017-03-24 | 2017-07-28 | 中国交通建设股份有限公司 | Immersed tube tunnel final joint and method for prefabricating, installation method |
Non-Patent Citations (1)
| Title |
|---|
| 卜良桃等: "《城市地下工程施工技术与工程实例》", 31 August 2013, 中国环境出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109183851A (en) * | 2018-09-04 | 2019-01-11 | 中交航局第二工程有限公司 | A kind of underwater installation method of shell-type immersed tube |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |
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| RJ01 | Rejection of invention patent application after publication |