CN107524166A - A kind of grouting bag and application method - Google Patents
A kind of grouting bag and application method Download PDFInfo
- Publication number
- CN107524166A CN107524166A CN201710774996.5A CN201710774996A CN107524166A CN 107524166 A CN107524166 A CN 107524166A CN 201710774996 A CN201710774996 A CN 201710774996A CN 107524166 A CN107524166 A CN 107524166A
- Authority
- CN
- China
- Prior art keywords
- bag
- grouting
- grouting bag
- application method
- bag body
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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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Classifications
-
- 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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
Abstract
The invention discloses a kind of grouting bag and application method, wherein grouting bag includes the bag body of integral sealing, and the bag body is provided with least one grouting port, and the bag body is made up of elastomeric material, when injecting curable slurries in vivo to bag, bag body can with the entrance of slurries automatic expansion.The space that can be sufficient filling with after the grouting bag slip casting around its position, pass through the deformation of itself, it is close between two steel shear connectors, after grout cures, a shear structure that Shear transfer is realized by the bed course is formed between two steel shear connectors, there is good adaptability and stronger practicality in the irregular shearing resistance support system of immersed tube tunnel, the stress raisers problem that can effectively avoid other connected modes from bringing, the grouting bag can use in the narrow and small place of working space simultaneously, and its convenient performance of constructing effectively reduces construction cost.
Description
Technical field
The present invention relates to immersed tube tunnel technical field of construction, more particularly to a kind of grouting bag and its do not advised in immersed tube tunnel
The then application method in shearing resistance support system.
Background technology
In recent years, being continuously increased with Tunnel Engineering over strait, immersed tunnelling method build seabed tunnel and obtain more and more should
With.Immersed tube tunnel is usually that several prefabrication cube transportations are live to sea, and tube coupling is carried out into docking in seabed and sunk
It is placed in the foundation trench dredged.Adjacent tube coupling joint carries out sealing using GINA waterstops and OMEGA waterstops.Flexible connection
Joint can effectively adapt to the installation of tube coupling sinking caused by the differential settlement that occurs afterwards in place of error and sinking, ensure
The safety coefficient and watertightness of immersed tube tunnel.
As the key point of underwater immersed tube tunnel structure stress, the form of shear structure has huge to whole engineering
Influence, immersed tube tunnel tube coupling joint shear structure form is steel shear connector, is pacified after the completion of tube coupling sinking on the inside of tunnel
Dress.Because steel shear connector installation site is located on the section direction of tube coupling joint side wall binding cavity inner concrete longitudinal direction, along tube coupling side
Upward horizontal range is just slightly larger than steel shear connector component in itself, and working space is very narrow, and steel shear connector is close to side
Wall OMEGA waterstops, forbid to need the mode of fire operation to be installed using welding etc. for protection waterstop, therefore steel shear connector
It is to be bolt-connected on the built-in fitting of tube coupling termination.
Because immersed tube docking and the installation of steel shear connector are to carry out at the construction field (site), there is more influence factor,
When designing shear structure, need to leave certain gap between two vertical steel shear connectors of mutual cooperation, therefore in steel shear connector
After installation, also need to form the transmission that shearing is realized in rigidity support after padding between the steel shear connector on vertical direction.So
And the differential settlement of tube coupling can cause dislocation and the opening of tube coupling joint, after directly resulting in the installation of steel shear connector, two steel are cut
Relative face can not be parallel to each other such as Design Conception between power key, and the displacement and torsion of multiple directions often be present, be formed
A kind of irregular support system.In this case, come according to the method for cushioning steel plate or making sketch plate
If being padded between steel shear connector, just it is bound to occur stress concentration in bed course somewhere, and other positions stress very little
Situation, integral anti-shearing structure larger failure risk is present.Therefore, how easily and effectively between vertical steel shear connector
Gap padded, form it into rigidity support realize shearing transmission, so as to avoid immersed tube tunnel tube coupling joint from integrally resisting
Shear structure fails, it has also become urgent problem in construction.
The content of the invention
Present invention aims at：For immersed tube tunnel tube coupling joint shear structure construction in, due to working space it is small with
And the problems such as tube coupling differential settlement causes effectively be padded between vertical steel shear connector, and then cause integral anti-shearing knot
A kind of situation of structure failure, there is provided the application method of grouting bag and the grouting bag in construction.
To achieve these goals, the technical solution adopted by the present invention is：
A kind of grouting bag, includes the bag body of integral sealing, and the bag body is provided with least one grouting port, the bag body
Be made up of elastomeric material, when injecting curable slurries in vivo to bag, bag body can with the entrance of slurries automatic expansion.
Grouting bag in the present invention passes through the slip casting on bag body due to using integral sealing and flexible bag body
Mouthful carry out injection slurries, in slip casting can automatic expansion, extend, formed in immersed tube joint because of tube coupling differential settlement
In irregular shearing resistance support system, the grouting bag can adequately fill up the space around its position, by the deformation of itself,
It is close on the irregular steel shear connector member planar in both sides, forming one after grout cures, between two steel shear connectors leans on
The bed course realizes the shear structure of Shear transfer, the stress raisers problem that can effectively avoid other connected modes from bringing, together
When the grouting bag can be used in the narrow and small place of working space, its convenient performance of constructing effectively reduce construction cost.
As the preferred scheme of the present invention, the grouting port is two.By designing two grouting ports in grouting bag,
It is used for slip casting or exhaust, can solve the problems, such as that air can not exclude in bag in slip casting, slurry when avoiding slip casting in pouch
The situation that liquid is not full or grout distribution is uneven, be advantageous to improve it is grout curing after overall mechanical properties.
As the preferred scheme of the present invention, the bag body is in pillow type.Due to needing bed course between vertical steel shear connector
Working region is in flat, thus using pillow type structure type grouting bag can preferably with the working region phase
Match somebody with somebody, there is higher practicality.
As the preferred scheme of the present invention, the bag body is made of elastomeric material.Because elastomeric material is with higher
Elasticity and elongation, have good ductility using the pouch of rubber global formation, disclosure satisfy that pressure requirements during use.
The present invention also provides a kind of application method of grouting bag, comprises the following steps：
A, it is put into billet between the vertical steel shear connector of installation；
B, grouting bag is lain in into billet center position, grouting port is towards outside and connects Grouting Pipe；
C, curable slurries are injected into grouting bag, after meeting pressurize requirement, stop slip casting.
The application method of the grouting bag, by placing billet between steel shear connector to reduce component spacing, so as to
Ensure effective contact area between pouch slip casting expansion grouting behind shaft or drift lining pouch both sides and component, by being encased inside between steel shear connector
The grouting bag simultaneously injects slurries, is formed after grout cures, between steel shear connector and realizes the anti-of Shear transfer by the bed course
Shear structure, the stress raisers problem that can effectively avoid other connected modes from bringing, in addition the grouting bag construction safety side
Just, space-consuming very little, workmen are few, it is not necessary to which large-scale equipment coordinates, and work progress is almost pollution-free to surrounding enviroment.
As the preferred scheme of the present invention, the billet thickness in the step a is 1mm, 2mm, 5mm, 10mm.By adopting
Conveniently it is applied in combination with the billet of multi-thickness specification, so that it is guaranteed that effective contact surface after grouting bag expansion with component
Product.
As the preferred scheme of the present invention, the billet needs the position to billet after being put between vertical steel shear connector
Put and be fixed.After the position of billet is fixed, due to steel after can avoiding in slip casting and being grout curing
The risk that backing plate is mobile and causes shear structure to fail.
As the preferred scheme of the present invention, the slurries injected in the step c are modified epoxy resin paste liquid.The slurries have
There are fast solidification, intensity height, antiseep and corrosion resistance and good, and the injecting paste material bulk density is much smaller than steel
Material, can reduce dead load, and more traditional steel member mounting means is more suitable for using in immersed tube tunnel.
As the preferred scheme of the present invention, slip casting process needs complete monitoring in the step c, ensures that grouting bag is cut with steel
Power key and billet fit, to ensure that whole shearing resistance support system being capable of normal operation.
As the preferred scheme of the present invention, the pressurize requirement in the step c up to 1Mpa and maintains at least for grouting pressure
5min is not reduced, so that it is guaranteed that after slurries injection meets pressure requirements, grouting bag is not in seepage or tear.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, the grouting bag in the present invention is due to using integral sealing and flexible bag body, and passes through the note on bag body
Slurry mouth carry out injection slurries, in slip casting can automatic expansion, extend, formed in immersed tube joint because of tube coupling differential settlement
Irregular shearing resistance support system in, the grouting bag can adequately fill up the space around its position, pass through the change of itself
Shape, it is close on the irregular steel shear connector member planar in both sides, after grout cures, one is formed between two steel shear connectors
The shear structure of Shear transfer is realized by the bed course, the stress raisers problem that can effectively avoid other connected modes from bringing,
The grouting bag can use in the narrow and small place of working space simultaneously, and its convenient performance of constructing effectively reduces construction cost；
2nd, two grouting ports are designed with the grouting bag in the present invention, it is used for slip casting or exhaust, can solve noting
The problem of air can not exclude in bag during slurry, avoid the feelings that slurries during slip casting in pouch do not fill or grout distribution is uneven
Condition, be advantageous to improve it is grout curing after overall mechanical properties；
3rd, the grouting bag in the present invention has good ductility using rubber global formation, when disclosure satisfy that use
Pressure requirements；
4th, the grouting bag application method in the present invention, by placing billet between steel shear connector to reduce between component
Away from so as to ensure effective contact area between pouch slip casting expansion grouting behind shaft or drift lining pouch both sides and component, by steel shear connector
Between be encased inside the grouting bag and inject slurries, formed after grout cures, between steel shear connector and realize shearing by the bed course
The shear structure of transmission, the stress raisers problem that can effectively avoid other connected modes from bringing, in addition the grouting bag apply
Work safe ready, space-consuming very little, workmen are few, it is not necessary to which large-scale equipment coordinates, and work progress is several to surrounding enviroment
It is pollution-free；
5th, the grouting bag application method in the present invention, by injecting modified epoxy resin paste liquid, due to the injecting paste material
There is fast solidification, intensity height, antiseep and corrosion resistance and good, and bulk density is much smaller than steel, helps
In reducing structure own wt, more traditional steel member mounting means is more suitable for using in immersed tube tunnel.
Brief description of the drawings
Fig. 1 is grouting bag structural representation of the present invention.
Fig. 2 is that grouting bag of the present invention arranges schematic diagram.
Marked in figure：1- grouting bags, 11- bag bodies, 12- grouting ports, 2- billets, 3- steel shear connector one, 4- steel shearing
Key two, the termination of 5- immersed tube one, the termination of 6- immersed tube two.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
Embodiment 1
The present invention provides a kind of grouting bag；
As shown in figure 1, the grouting bag 1 in the present embodiment, includes the bag body 11 of integral sealing, can be according to fixed using needing
Shape and size processed, the bag body 11 are provided with two grouting ports 12, and the slip casting or exhaust being respectively used to during use are described
Bag body is made up of elastomeric material, and when injecting curable slurries into bag body 11, bag body can be automatic with the entrance of slurries
Expansion.
Grouting bag integral sealing in the present invention and it is made up of elastomeric material, there is certain plasticity and ductility,
When the slip casting into bag, volume can expand, and fill space where its, immersed tube joint because of tube coupling differential settlement shape
Into irregular shearing resistance support system in, the grouting bag can adequately fill up the space around its position, by itself
Deformation, is close on the irregular steel shear connector member planar in both sides, and after grout cures, one is formed between two steel shear connectors
The individual shear structure that Shear transfer is realized by the bed course, the stress raisers that can effectively avoid other connected modes from bringing are asked
Topic, while the grouting bag can use in the narrow and small place of working space, its convenient performance of constructing effectively reduces construction cost.
In addition, by designing two grouting ports in grouting bag, slip casting or exhaust are respectively used to, can be solved empty in bag in slip casting
The problem of gas can not exclude, the situation that slurries during slip casting in pouch do not fill or grout distribution is uneven is avoided, is advantageous to
Improve it is grout curing after overall mechanical properties.
In the present embodiment, the bag body is in pillow type.Due to needing the working region of bed course to be between vertical steel shear connector
Flat, thus preferably can be matched using the grouting bag of pillow type structure type with the working region, have higher
Practicality.The shape and size of certain this bag of body can also be customized according to actual use situation sometimes, such as barrel shape.
In the present embodiment, the bag body is made of elastomeric material.Because elastomeric material has higher elasticity and elongation
Rate, there is good ductility using the pouch of rubber global formation, disclosure satisfy that pressure requirements during use.In addition, the bag
The material of body can also be made using high molecular weight high density PEF and high-strength PVC material etc., but must assure that note
Pressure requirements when starching the gluing station of pouch and the phenomenon of intensity deficiency is not present in aperture position, and meeting to use etc..
Embodiment 2
The present invention also provides a kind of application method of grouting bag, comprises the following steps：
A, as shown in Fig. 2 positioned at vertical steel shear connector 1, steel shear connector 24 respectively with the termination 5 of immersed tube one, immersed tube two
After the built-in fitting of termination 6 is attached fastening by high-strength bolt, steel is put between steel shear connector 1, steel shear connector 24
Backing plate 2；
B, grouting bag 1 is lain in into the center position of billet 2, make the grouting port 12 in grouting bag 1 towards outside simultaneously
Connect Grouting Pipe；
C, curable slurries are injected into grouting bag 1, after grouting pressure reaches requirement and pressurize for a period of time, are stopped
Only slip casting.
The application method of the grouting bag, by placing billet between steel shear connector to reduce component spacing, so as to
Ensure effective contact area between pouch slip casting expansion grouting behind shaft or drift lining pouch both sides and component, by being encased inside between steel shear connector
The grouting bag simultaneously injects slurries, is formed after grout cures, between steel shear connector and realizes the anti-of Shear transfer by the bed course
Shear structure, the stress raisers problem that can effectively avoid other connected modes from bringing, in addition the grouting bag construction safety side
Just, space-consuming very little, workmen are few, it is not necessary to which large-scale equipment coordinates, and work progress is almost pollution-free to surrounding enviroment.
In the present embodiment, according to on-site actual situations, billet thickness in the step a is 1mm, 2mm, 5mm,
10mm.Conveniently be applied in combination by using the billet of multi-thickness specification, so that it is guaranteed that grouting bag expansion after with component
Effective contact area.In addition, billet needs the position progress to billet spacing after being put between vertical steel shear connector, mainly
By welding angle steel or other steel parts on the face of steel shear connector for placing billet to be defined to the position of billet, keep away
Exempt from the risk for causing shear structure to fail because billet is mobile in slip casting and after grout curing.Certainly welded
, it is necessary to can implement after taking necessary safeguard measure during operation, to avoid damage to the waterstop waterproof system of joint.
In the present embodiment, the slurries injected in the step c are modified epoxy resin paste liquid, when grouting pressure up to 1Mpa and
Stop slip casting when maintaining at least 5min not reduce.Slip casting process needs complete monitoring, ensures grouting bag and steel shear connector and steel pad
Plate fits, and after slurries completely solidification, then is checked, to ensure that whole shearing resistance support system being capable of normal operation.Complete
After grouting bag installation, also need periodically to check grouting bag progress position, while avoid entering action near shear connector
Fiery operation etc., prevent from having an impact solidfied material in grouting bag.Fast, intensity is solidified because modified epoxy resin paste liquid has
The advantages that high, antiseep and corrosion resistance and good, and the injecting paste material bulk density is much smaller than steel, can reduce structure
Deadweight, more traditional steel member mounting means are more suitable for using in immersed tube tunnel.In addition, at some for firming body mechanical property
Under the less demanding service condition of energy, the grouting bag can also inject other the curable slurries for meeting to require, such as coagulation
Soil paste liquid.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all originals in the present invention
All any modification, equivalent and improvement made within reason etc., should be included in the scope of the protection.
Claims (10)
1. a kind of grouting bag, it is characterised in that the bag body including integral sealing, the bag body are provided with least one slip casting
Mouthful, the bag body is made up of elastomeric material, when injecting curable slurries in vivo to bag, bag body can with the entrance of slurries and
Automatic expansion.
2. grouting bag according to claim 1, it is characterised in that the grouting port is two.
3. grouting bag according to claim 2, it is characterised in that the bag body is in pillow type.
4. according to the grouting bag described in one of claim 1-3, it is characterised in that the bag body is made of elastomeric material.
5. a kind of grouting bag application method as described in claim 1-4 is any, it is characterised in that comprise the following steps：
A, it is put into billet between the vertical steel shear connector of installation；
B, grouting bag is lain in into billet center position, grouting port is towards outside and connects Grouting Pipe；
C, curable slurries are injected into grouting bag, after meeting pressurize requirement, stop slip casting.
6. grouting bag application method according to claim 5, it is characterised in that the billet thickness in the step a
For 1mm, 2mm, 5mm, 10mm.
7. grouting bag application method according to claim 5, it is characterised in that the billet is cut being put into vertical steel
Need that the position of billet is fixed after between power key.
8. grouting bag application method according to claim 5, it is characterised in that the slurries injected in the step c are
Modified epoxy resin paste liquid.
9. grouting bag application method according to claim 5, it is characterised in that slip casting process needs complete in the step c
Range monitoring, ensure that grouting bag fits with steel shear connector and billet.
10. grouting bag application method according to claim 5, it is characterised in that in the step c pressurize requirement be
Grouting pressure is up to 1Mpa and maintains at least 5min not reduce.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710774996.5A CN107524166A (en) | 2017-08-31 | 2017-08-31 | A kind of grouting bag and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710774996.5A CN107524166A (en) | 2017-08-31 | 2017-08-31 | A kind of grouting bag and application method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107524166A true CN107524166A (en) | 2017-12-29 |
Family
ID=60683221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710774996.5A Pending CN107524166A (en) | 2017-08-31 | 2017-08-31 | A kind of grouting bag and application method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107524166A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331023A (en) * | 2018-04-17 | 2018-07-27 | 中交公路规划设计院有限公司 | Joints in Immersed Tunnel shear connector spring bed course and its installation method |
| CN109488340A (en) * | 2018-12-30 | 2019-03-19 | 平煤神马建工集团有限公司 | Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf |
| CN110700863A (en) * | 2019-09-25 | 2020-01-17 | 山东建筑大学 | Water bag filling pipe type combined arch frame and construction process thereof |
| CN113089962A (en) * | 2021-04-11 | 2021-07-09 | 南京泽舒居科技有限公司 | Overhead system and installation device and construction method thereof |
| CN113339064A (en) * | 2021-05-19 | 2021-09-03 | 天津大学 | Multidimensional active control method for regulating and controlling tunnel vector deformation through flexible body expansion |
| CN114857367A (en) * | 2022-04-02 | 2022-08-05 | 中国一冶集团有限公司 | Post-grouting expansive underground pipeline joint plugging structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203978444U (en) * | 2014-05-22 | 2014-12-03 | 南京地铁集团有限公司 | Tunnel lining ruggedized construction |
-
2017
- 2017-08-31 CN CN201710774996.5A patent/CN107524166A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203978444U (en) * | 2014-05-22 | 2014-12-03 | 南京地铁集团有限公司 | Tunnel lining ruggedized construction |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331023A (en) * | 2018-04-17 | 2018-07-27 | 中交公路规划设计院有限公司 | Joints in Immersed Tunnel shear connector spring bed course and its installation method |
| CN108331023B (en) * | 2018-04-17 | 2023-06-09 | 中交公路规划设计院有限公司 | Method for installing spring cushion layer of shear key of immersed tube tunnel joint |
| CN109488340A (en) * | 2018-12-30 | 2019-03-19 | 平煤神马建工集团有限公司 | Advanced pouch pre-pouring grout passes rapidly through the construction method in high prominent down-hole goaf |
| CN110700863A (en) * | 2019-09-25 | 2020-01-17 | 山东建筑大学 | Water bag filling pipe type combined arch frame and construction process thereof |
| CN110700863B (en) * | 2019-09-25 | 2021-02-19 | 山东建筑大学 | Water bag filling pipe type combined arch frame and construction process thereof |
| CN113089962A (en) * | 2021-04-11 | 2021-07-09 | 南京泽舒居科技有限公司 | Overhead system and installation device and construction method thereof |
| CN113089962B (en) * | 2021-04-11 | 2022-12-23 | 南京泽舒居科技有限公司 | Overhead system and installation device and construction method thereof |
| CN113339064A (en) * | 2021-05-19 | 2021-09-03 | 天津大学 | Multidimensional active control method for regulating and controlling tunnel vector deformation through flexible body expansion |
| CN114857367A (en) * | 2022-04-02 | 2022-08-05 | 中国一冶集团有限公司 | Post-grouting expansive underground pipeline joint plugging structure |
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Application publication date: 20171229 |
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