CN107653872A - The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system and its construction method - Google Patents
The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system and its construction method Download PDFInfo
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- CN107653872A CN107653872A CN201711085086.2A CN201711085086A CN107653872A CN 107653872 A CN107653872 A CN 107653872A CN 201711085086 A CN201711085086 A CN 201711085086A CN 107653872 A CN107653872 A CN 107653872A
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- wall
- groove section
- reinforcement cage
- ultra
- section steel
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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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/185—Bulkheads or similar walls made solely of concrete in situ with flexible joint members between sections
Abstract
The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system and its construction method, located at meeting pitted surface and meet between native face, including a phase groove section steel reinforcement cage, I-shaped steel joint and the second stage of groove section steel reinforcement cage from left to right set gradually, the tip side of a phase groove section steel reinforcement cage is provided with end socket muscle；The second stage of groove section steel reinforcement cage on the inside of I-shaped steel joint flange plate with being connected, therebetween only slurry iron sheet and pressure welding muscle are provided with the outside of connecting node, multiple Grouting Pipe is provided with a phase groove section steel reinforcement cage and the second stage of groove section steel reinforcement cage connection end, close to the corner for meeting native face, multiple Grouting Pipe ttom of pipe sealing, outer wall, which is enclosed with, only starches adhesive tape；Dividing blade is provided with multiple Grouting Pipe, multiple Grouting Pipe is separated into three once grouting passages by dividing blade, and the outer wall of each once grouting passage is provided with a row and penetrates slurry hole along what multiple Grouting Pipe uniform intervals were set.The present invention has the characteristics that safety, is applicable, and has popularization and practical value well, good economic benefit can be produced after extensive popularization and application.
Description
Technical field
It is a kind of ground-connecting-wall joint water-stopping system the invention belongs to building engineering field, more particularly to ultra-deep ground-connecting-wall is firm
Property joint synthesis water-stopping system and its construction method.
Background technology
In recent years, application of the ground-connecting-wall support system in various huge ultradeep foundation pit engineerings is rapidly developed, and it has
There is the features such as rigidity is big, barrier performance is good, and construction noise is low, be used for the super large that soil layer condition is poor, level of ground water is high, foundation ditch is deep
In ultra-deep complexity foundation ditch.But due to the Various Complex situation in work progress, Traditional flexible joint ground-connecting-wall groove section seam crossing holds
The folder quality problems such as mud slag inclusion are also easy to produce, cause localized seepage occurs during excavation of foundation pit, or even drift sand, piping, circumferentially occur
Phenomena such as face differential settlement, serious threat deep pit monitor.Quality control on construction difficulty therefore, for ultra-deep ground-connecting-wall is big,
The features such as groundwater seepage pressure is high, the excavation of foundation pit time is long, using a kind of reliable efficient ground-connecting-wall joint water-stopping system just
It is particularly important.
The content of the invention
It is an object of the invention to provide ultra-deep ground-connecting-wall rigid joint synthesis water-stopping system and its construction method, to solve existing
There is technology to be also easy to produce drift sand, piping, the technical problem of surrounding ground differential settlement；And solve prior art construction complexity, and
Slip casting have some setbacks the problem of.
To achieve the above object, the present invention adopts the following technical scheme that：
The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system, located at meeting pitted surface and meet between native face, it is characterised in that：Including from a left side
A phase groove section steel reinforcement cage, I-shaped steel joint and the second stage of groove section steel reinforcement cage set gradually to the right side, the phase groove section steel reinforcement cage
Tip side is provided with end socket muscle, and the end socket muscle is trapezoidal；The inner side of the second stage of groove section steel reinforcement cage and I-shaped steel joint flange plate
It is connected, only slurry iron sheet is provided with the outside of connecting node therebetween, pressure welding muscle is provided with the outside of the only slurry iron sheet, described
One phase groove section steel reinforcement cage and the second stage of groove section steel reinforcement cage connection end, multiple Grouting Pipe is provided with close to the corner for meeting native face, it is described multiple
Grouting Pipe ttom of pipe seals, and outer wall, which is enclosed with, only starches adhesive tape；Described that dividing blade is repeatedly provided with Grouting Pipe, the dividing blade will
Multiple Grouting Pipe is separated into three once grouting passages, and the outer wall of each once grouting passage is provided with a row along multiple Grouting Pipe
What uniform intervals were set penetrates slurry hole.
It is further preferred that the flange plate width of the I-shaped steel joint is not less than 350mm, the I-shaped steel joint bottom
It is deeper 300 ~ 500mm than the wall chase of ultra-deep ground-connecting-wall.
Further, the only slurry iron sheet width is not less than 500mm, and thickness is not less than 0.35mm, deep along ultra-deep ground-connecting-wall
Elongated arrangement.
Further, the material of the repeatedly Grouting Pipe is UPVC, and caliber is not more than 40mm, and wall thickness is not less than 2mm, tube top
Higher than 200 ~ 500mm of ultra-deep ground-connecting-wall wall top.
Further, the aperture for penetrating slurry hole is not more than 4mm, between adjacent in the multiple Grouting Pipe under water level
Penetrate slurry hole spacing be 300 ~ 1000mm.
Further, the only slurry adhesive tape is 1 ~ 2 layer, and width is not less than 80mm.
In addition, the repeatedly Grouting Pipe is fixed by colligation tied silk and the second stage of groove section steel reinforcement cage.
It is further preferred that the repeatedly Grouting Pipe ttom of pipe is sealed by closing rubber sleave.
The rigid joint of ultra-deep ground-connecting-wall integrates the construction method of water-stopping system, it is characterised in that comprises the following steps：
Step 1, prepare before constructing：Prepare construction material requested；
Step 2, welding H-bar joint：The horizontal cage bar of the second stage of groove section steel reinforcement cage both sides is welded on I-shaped steel joint two
The inner side of flange plate；
Iron sheet is only starched in step 3, welding：Only slurry iron sheet the second stage of groove section steel reinforcement cage and I-shaped steel joint will be fixed on by pressure welding muscle
At connecting node；
Step 4, multiple Grouting Pipe is set：In the phase groove section steel reinforcement cage and the second stage of groove section steel reinforcement cage connection end, close to meeting soil
Multiple Grouting Pipe is fixed in the corner in face；
Step 5, carry out slip casing by pressure：When after excavation of foundation pit, basement main structure construction or find that ground-connecting-wall seam occurs
During localized seepage, slip casing by pressure is carried out to groove section seam using multiple Grouting Pipe, covers protective cap after the completion of once grouting, subsequently
Secondary, slip casting three times can be carried out as needed, and so far, ultra-deep ground-connecting-wall rigid joint synthesis water-stopping system of the present invention has been constructed
Into.
Compared with prior art the invention has the characteristics that and beneficial effect：
First, the bottom of I-shaped steel joint is deeper 300 ~ 500mm than ground-connecting-wall bottom land in the present invention, square soil layer under energy insertion groove
In, effectively prevent concrete from being streamed from joint bottom, avoid producing penetrating passage because the second stage of groove section joint can not clean with water totally.
Secondly, the present invention use more Grouting Pipes of UPVC, easy for installation and not cracky, can be more to the progress of groove section seam
Secondary slip casing by pressure, block the penetrating passage of groove section seam crossing.Meanwhile slurry hole is penetrated according to underground water and clay distribution situation and depth
It is arranged, has both made have suitable uniform grouting pressure under different depth, and can better adapts to different seepage states.
Furthermore the present invention can use different injecting paste materials, grouting pressure in the different chamber of same root Grouting Pipe
Flow rate of grouting etc. synchronizes mortar depositing construction, to tackle various underground water and clay distribution situation and different degrees of seepage feelings
Condition.Such as from polyurethane, cement-sodium silicate, superfine cement slurry, slip casting, quick blocking are synchronized using more set grouting pumps
To tackle the emergencies such as more serious seepage piping.
Finally, the advantage of lower cost of requirement of the present invention to construction site and construction, process procedure is also less and easy behaviour
Make.
The present invention achieves good application effect in ultra-deep ground-connecting-wall support engineering, and can be widely used in various
Level of ground water is high, soil layer infiltration coefficient is big, underground water source supply is more, Ground Settlement control requires high ground-connecting-wall branch nurse
Cheng Zhong.
The present invention has the characteristics that safety, is applicable, and has popularization and practical value well, can be produced after extensive popularization and application
Raw good economic benefit.
Brief description of the drawings
Fig. 1 is the structural representation that ultra-deep ground-connecting-wall rigid joint of the present invention integrates water-stopping system；
Fig. 2 is the structural representation of repeatedly Grouting Pipe of the present invention.
Reference：1- mono- phase groove section steel reinforcement cages；2- I-shaped steel joints；3- second phase groove section steel reinforcement cages；4- only starches iron sheet；5-
Pressure welding muscle；6- meets pitted surface；7- meets native face；More Grouting Pipes of 8-；9- penetrates slurry hole；10- dividing blades；11- once grouting passages；
12- only starches adhesive tape.
Embodiment
Technological means, character of innovation, reached purpose and effect to realize the present invention are easy to understand, below to this
Invention further illustrates.
The embodiment recorded herein is specific embodiment of the invention, for illustrating the design of the present invention,
It is explanatory and exemplary, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also be based on the application claims and specification disclosure of that using aobvious and
The other technical schemes being clear to, these technical schemes include any obvious using making for the embodiment to recording herein
The technical scheme of substitutions and modifications.
The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system, as shown in figure 1, between meeting pitted surface 6 and meeting native face 7, bag
Include a phase groove section steel reinforcement cage 1, I-shaped steel joint 2 and the second stage of groove section steel reinforcement cage 3 from left to right set gradually, a phase groove section reinforcing bar
The tip side of cage 1 is provided with end socket muscle 3, and end socket muscle 3 is trapezoidal；The inner side of the second stage of groove section steel reinforcement cage 3 and the flange plate of I-shaped steel joint 2
It is connected, only slurry iron sheet 4 is provided with the outside of connecting node therebetween, only starches the outside of iron sheet 4 and be provided with pressure welding muscle 5, in a phase
Groove section steel reinforcement cage 1 and the second stage of connection end of groove section steel reinforcement cage 3, the close corner for meeting native face 7 are provided with multiple Grouting Pipe 8, multiple slip casting
The ttom of pipe of pipe 8 seals, and outer wall is enclosed with only slurry adhesive tape 12；As shown in Fig. 2 being repeatedly provided with dividing blade 10 in Grouting Pipe 8, separate leaf
Multiple Grouting Pipe 8 is separated into three once grouting passages 11 by piece 10, and the outer wall of each once grouting passage 11 is provided with a row
Slurry hole 9 is penetrated along what the multiple uniform intervals of Grouting Pipe 8 were set.The flange plate width of I-shaped steel joint 2 is not less than 350mm, the work
The bottom of word steel joint 2 is deeper 300 ~ 500mm than the wall chase of ultra-deep ground-connecting-wall, only starches the width of iron sheet 4 and is not less than 500mm, thickness is not small
In 0.35mm, long arrangement is mastered along ultra-deep ground-connecting-wall.The material of multiple Grouting Pipe 8 is UPVC, and caliber is not more than 40mm, and wall thickness is not
Less than 2mm, tube top is higher than ultra-deep ground-connecting-wall 200 ~ 500mm of wall top, and the aperture for penetrating slurry hole 9 is not more than 4mm, more under water level
The spacing for penetrating slurry hole 9 between adjacent in secondary Grouting Pipe 8 is 300 ~ 1000mm.It is 1 ~ 2 layer only to starch adhesive tape 12, and width is not less than
80mm, multiple Grouting Pipe 8 are fixed by colligation tied silk and the second stage of groove section steel reinforcement cage 3, and the multiple ttom of pipe of Grouting Pipe 8 is by closing rubber
Leather sheath seals.
The rigid joint of ultra-deep ground-connecting-wall integrates the construction method of water-stopping system, it is characterised in that comprises the following steps：
Step 1, prepare before constructing：Prepare construction material requested；
Step 2, welding H-bar joint 2：The horizontal cage bar of the second stage of both sides of groove section steel reinforcement cage 3 is welded on 1 liang of I-shaped steel joint
The inner side of individual flange plate；
Iron sheet 4 is only starched in step 3, welding：Only slurry iron sheet 4 the second stage of groove section steel reinforcement cage 3 and I-steel will be fixed on by pressure welding muscle 5
At the connecting node of joint 2；
Step 4, multiple Grouting Pipe 8 is set：In a phase groove section steel reinforcement cage 1 and the second stage of connection end of groove section steel reinforcement cage 3, close to meeting soil
Multiple Grouting Pipe 8 is fixed in the corner in face 7；
Step 5, carry out slip casing by pressure：When after excavation of foundation pit, basement main structure construction or find that ground-connecting-wall seam occurs
During localized seepage, slip casing by pressure is carried out to groove section seam using multiple Grouting Pipe 8, protective cap is covered after the completion of once grouting, after
Continuous to carry out secondary, slip casting three times as needed, so far, ultra-deep ground-connecting-wall rigid joint synthesis water-stopping system of the present invention has been constructed
Into.
Specific embodiment of the invention presented below：
In the present embodiment, the flange width of I-shaped steel joint is 350mm, and its bottom is than ground-connecting-wall bottom land depth 500mm；Only starch iron sheet
Width is 500mm, thickness 0.35mm；The wall thickness of Φ 40 is used to connect wall top above Ground for more Grouting Pipes of 2mm UPVC, tube top
300mm；The aperture for penetrating slurry hole be 4mm, and the spacing under level of ground water be 500mm, and the slice width degree of hole outer wrapping 2 is that stopping for 80mm starches glue
Band.For medium-fine sand mixed soil and ultra-deep ground-connecting-wall, starched using microdilatancy superfine cement, the ratio of mud 0.7 ~ 0.8, grouting pressure
0.4~1MPa.The ultra-deep ground-connecting-wall rigid joint synthesis water-stopping system of the present embodiment, with ground-connecting-wall flexible joint or conventional rigid
Joint coordinates the joint sealing form such as high-pressure rotary jet grouting pile to compare, and its construction costs can save 50% or so, for cobble, middle sand, thin
A variety of soil layers such as sand, flour sand, muck soil, silty clay all have very strong adaptability, in level of ground water height, underground
Also there is preferable impervious water-stagnating effect under the hydrogeologic condition that seepage discharge is big, water quality corrosivity is strong, and can be according to construction need
Secondary, repeatedly slip casting three times is carried out, is particluarly suitable in ultra-deep ground-connecting-wall engineering, even the ground-connecting-wall engineering of " double wall unifications "
With.High-pressure rotary-spray pile joint sealing form is compared simultaneously, construction machinery species of the present invention is few, and construction process is easy, Ke Yijie
About more than 20% duration.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (9)
1. the rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system, located at meeting pitted surface（6）With meet native face（7）Between, it is characterised in that：
Including the phase groove section steel reinforcement cage from left to right set gradually（1）, I-shaped steel joint（2）With the second stage of groove section steel reinforcement cage（3）, it is described
One phase groove section steel reinforcement cage（1）Tip side be provided with end socket muscle（3）, the end socket muscle（3）To be trapezoidal；The second stage of groove section steel reinforcement cage
（3）With I-shaped steel joint（2）It is connected on the inside of flange plate, only slurry iron sheet is provided with the outside of connecting node therebetween（4）,
The only slurry iron sheet（4）Outside is provided with pressure welding muscle（5）, in the phase groove section steel reinforcement cage（1）With the second stage of groove section steel reinforcement cage（3）Even
Connect end, close to meeting native face（7）Corner be provided with multiple Grouting Pipe（8）, the multiple Grouting Pipe（8）Ttom of pipe seals, outer wall parcel
Have and only starch adhesive tape（12）；The multiple Grouting Pipe（8）It is interior to be provided with dividing blade（10）, the dividing blade（10）By multiple slip casting
Pipe（8）It is separated into three once grouting passages（11）, each once grouting passage（11）Outer wall be provided with a row along multiple note
Slurry pipe（8）What uniform intervals were set penetrates slurry hole（9）.
2. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：The I-steel connects
Head（2）Flange plate width be not less than 350mm, the I-shaped steel joint（2）Bottom deeper than the wall chase of ultra-deep ground-connecting-wall 300 ~
500mm。
3. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：The only slurry iron sheet
（4）Width is not less than 500mm, and thickness is not less than 0.35mm, and long arrangement is mastered along ultra-deep ground-connecting-wall.
4. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：The multiple slip casting
Pipe（8）Material be UPVC, caliber is not more than 40mm, and wall thickness is not less than 2mm, tube top higher than ultra-deep ground-connecting-wall wall top 200 ~
500mm。
5. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：It is described to penetrate slurry hole
（9）Aperture be not more than 4mm, the multiple Grouting Pipe under water level（8）On it is adjacent between penetrate slurry hole（9）Spacing be
300~1000mm。
6. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：The only slurry adhesive tape
（12）For 1 ~ 2 layer, width is not less than 80mm.
7. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：The multiple slip casting
Pipe（8）Pass through colligation tied silk and the second stage of groove section steel reinforcement cage（3）It is fixed.
8. ultra-deep ground-connecting-wall rigid joint as claimed in claim 1 integrates water-stopping system, it is characterised in that：The multiple slip casting
Pipe（8）Ttom of pipe is sealed by closing rubber sleave.
9. the construction method of the ultra-deep ground-connecting-wall rigid joint synthesis water-stopping system as described in claim 1 ~ 8 any one, its
It is characterised by, comprises the following steps：
Step 1, prepare before constructing：Prepare construction material requested；
Step 2, welding H-bar joint（2）：By the second stage of groove section steel reinforcement cage（3）The horizontal cage bar of both sides is welded on I-steel and connect
Head（1）The inner side of two flange plates；
Iron sheet is only starched in step 3, welding（4）：Iron sheet will only be starched（4）Pass through pressure welding muscle（5）It is fixed on the second stage of groove section steel reinforcement cage（3）
With I-shaped steel joint（2）At connecting node；
Step 4, multiple Grouting Pipe is set（8）：In the phase groove section steel reinforcement cage（1）With the second stage of groove section steel reinforcement cage（3）Connection
End, close to meeting native face（7）Corner fix multiple Grouting Pipe（8）；
Step 5, carry out slip casing by pressure：When after excavation of foundation pit, basement main structure construction or find that ground-connecting-wall seam occurs
During localized seepage, multiple Grouting Pipe is utilized（8）Slip casing by pressure is carried out to groove section seam, protective cap is covered after the completion of once grouting,
Secondary, slip casting three times can be subsequently carried out as needed, so far, ultra-deep ground-connecting-wall rigid joint synthesis water-stopping system construction of the present invention
Complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085086.2A CN107653872A (en) | 2017-11-07 | 2017-11-07 | The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711085086.2A CN107653872A (en) | 2017-11-07 | 2017-11-07 | The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107653872A true CN107653872A (en) | 2018-02-02 |
Family
ID=61120505
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711085086.2A Pending CN107653872A (en) | 2017-11-07 | 2017-11-07 | The rigid joint of ultra-deep ground-connecting-wall integrates water-stopping system and its construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108612084A (en) * | 2018-05-10 | 2018-10-02 | 广州地铁设计研究院有限公司 | A kind of construction method of diaphragm wall |
| CN108677922A (en) * | 2018-06-07 | 2018-10-19 | 中铁二局第工程有限公司 | A kind of fabrication of reinforcing cage and installation method |
| CN110528500A (en) * | 2019-07-24 | 2019-12-03 | 青岛理工大学 | A kind of high rich water borders on the sea regional ground continuous wall connector water-stopping method |
| WO2021013201A1 (en) * | 2019-07-24 | 2021-01-28 | 青岛理工大学 | Water stopping device and method for ground continuous wall joint in high-water-rich coastal area |
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|---|---|---|---|---|
| CN108612084A (en) * | 2018-05-10 | 2018-10-02 | 广州地铁设计研究院有限公司 | A kind of construction method of diaphragm wall |
| CN108677922A (en) * | 2018-06-07 | 2018-10-19 | 中铁二局第工程有限公司 | A kind of fabrication of reinforcing cage and installation method |
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| CN110528500A (en) * | 2019-07-24 | 2019-12-03 | 青岛理工大学 | A kind of high rich water borders on the sea regional ground continuous wall connector water-stopping method |
| WO2021013201A1 (en) * | 2019-07-24 | 2021-01-28 | 青岛理工大学 | Water stopping device and method for ground continuous wall joint in high-water-rich coastal area |
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