CN206916733U - The diaphram wall reserved grouting tubular construction of steel reinforcement cage - Google Patents
The diaphram wall reserved grouting tubular construction of steel reinforcement cage Download PDFInfo
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- CN206916733U CN206916733U CN201720891707.5U CN201720891707U CN206916733U CN 206916733 U CN206916733 U CN 206916733U CN 201720891707 U CN201720891707 U CN 201720891707U CN 206916733 U CN206916733 U CN 206916733U
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- reinforcement cage
- steel reinforcement
- cylindrical portion
- grout pipe
- round platform
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Abstract
The utility model proposes a kind of diaphram wall reserved grouting tubular construction of steel reinforcement cage, it includes steel reinforcement cage and grout pipe, 2~3 grout pipes are longitudinally isometric to be connected in steel reinforcement cage, the lower end of the grout pipe has cylindrical portion and round platform portion successively, coaxially same footpath, length are 50~100mm to cylindrical portion with grout pipe, round platform portion and cylindrical portion are coaxial, and the length in round platform portion is 50~100mm, small end and the same footpath of cylindrical portion, taper 1：2~3, concrete chock plug fills up cylindrical portion and the round platform portion of grout pipe, the utility model is for carrying out the engineering that bottom uses high pressure jet grouting to form water-stop curtain during construction diaphram wall in layer deeper, it both can ensure that concrete did not entered in grout pipe during construction of diaphragm wall, it is again convenient after the completion of the construction of underground continuous wall body, grout pipe is run through to probing below wall body and irrigates grouting operation, improve rate of penetration and save the expense of drilled drawing-core, water-stop curtain construction speed is accelerated, improves excavation of foundation pit safety coefficient.
Description
Technical field
It the utility model is related to the steel reinforcement cage of underground continuous wall construction technique, more particularly to diaphram wall.
Background technology
For complicated in engineering geology, solution cavity, fluid bowl, lapies development are irregular（Containing beading）And bury deeper stratum
In carry out construction diaphram wall.Because engineering geological condition is complicated, solution cavity, fluid bowl, the uncertainty of lapies development, scar rise
It is very big to lie prostrate drop, and diaphram wall toe of wall only needs to be embedded in certain rock stratum can meet deep pit monitor and force request, without complete
Penetrate karst strata entirely.But it is limited by solution cavity, lapies, the uncertainty of fluid bowl development, diaphram wall（Or foundation ditch）Bottom is present
Infiltration, water gushing channelway, underground continuous wall bottom perimeter can not form water-stop curtain, to solve ground-connecting-wall ground swell water, seepage problem,
Ensure that effective water-stop curtain is formed on diaphram wall and its bottom, after construction of diaphragm wall according to grouting process and its
Pressure carries out brill injected hole according to certain size again cloth hole and using engineering geological drilling rig, then using these injected holes to this
Diaphram wall bottom, which carries out slip casting, makes to be formed effective water-stop curtain, and this kind of construction method duration is time-consuming long, efficiency is low, it is impossible to and
Shi Jinhang grout sealings reach water-stagnating effect, while slip casting hole perpendicularity can not ensure, construction costs is high, to influence of foundation excavation
Greatly.
In recent years, in the construction of diaphragm wall of water conservancy construction engineering, grouting tubular construction is reserved frequently with steel reinforcement cage, i.e.,
Diaphram wall uses reinforced concrete structure, and grout pipe is welded in steel reinforcement cage, steel reinforcement cage is buried in concrete during construction
Interior, grout pipe runs through diaphragm wall from top to bottom, after the completion of construction of diaphragm wall, reserves grout pipe and is used as in diaphram wall in advance
The injected hole of brill, then extended downwardly using engineering geological drilling rig along these injected holes and bore bottom injected hole.Utilize these injected holes
Carrying out the slip casting of diaphram wall makes to form effective water-stop curtain.This construction method greatly reduces again cloth hole and bores slip casting
The time and duration in hole take, it is ensured that and perpendicularity, the low engineering cost of injected hole are small to influence of foundation excavation.This method
Endcapped processing is carried out to reserved grout pipe between construction of diaphragm wall, otherwise concrete is poured into grout pipe, is in the milk
Pipe loses the effect for serving as injected hole.It is not ideal enough to the processing of grout pipe endcapped in the prior art, only with simple fiber
Cloth wrapping is handled, often because endcapped is dealt with improperly（Or fiber cloth comes off or perforated）And grout pipe loses and serves as injected hole
Effect.
Utility model content
The purpose of this utility model is to propose a kind of reserved grouting tubular construction of diaphram wall steel reinforcement cage, and it is by grout pipe
End is closed with concrete chock plug, both can ensure that concrete did not entered in grout pipe during construction of diaphragm wall, and conveniently
After the completion of the construction of underground continuous wall body, grout pipe is run through to probing below wall body and irrigates grouting operation.
The purpose of this utility model can be realized by following technical solution.
The diaphram wall reserved grouting tubular construction of steel reinforcement cage, includes steel reinforcement cage and grout pipe, steel reinforcement cage includes phase
The longitudinal reinforcement and transverse steel to connect, 2~3 grout pipes are longitudinally isometric to be connected in steel reinforcement cage, under the grout pipe
End has cylindrical portion and round platform portion successively, and coaxially same footpath, length are 50~100mm, round platform portion and circle to cylindrical portion with grout pipe
Cylinder portion is coaxial, and the length in round platform portion is 50~100mm, small end and the same footpath of cylindrical portion, taper 1：2~3.
Prioritization scheme is：Concrete chock plug fills up cylindrical portion and the round platform portion of grout pipe, or prefabricated mortar internal model and mixed
Coagulate cylindrical portion and round platform portion that native chock plug fills up grout pipe.
Further prioritization scheme is：The steel reinforcement cage used a phase groove section, the second stage of groove section respective side weldering of the steel reinforcement cage
It is connected to I-shaped steel joint.
Compared with prior art, the utility model has the advantages that：
The utility model is irregular for solution cavity, fluid bowl, lapies development（Containing beading）And bury and enter in deeper stratum
The engineering of water-stop curtain is formed using high pressure jet grouting on bottom during row construction diaphram wall, solves in the prior art to filling
The problem of pipe end Seal treatment is not ideal enough is starched, it both can ensure that concrete did not entered grouting during construction of diaphragm wall
In pipe, and conveniently after the completion of the construction of underground continuous wall body, grout pipe is run through to probing below wall body and irrigates grouting
Operation, improves rate of penetration and has saved the expense of drilled drawing-core, accelerates water-stop curtain construction speed, improves excavation of foundation pit
Safety coefficient.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is grout pipe structural representation of the present utility model.
Embodiment
With specific embodiment, the utility model is described in further detail below：
With reference to figure 1 and Fig. 2, a kind of diaphram wall reserved grouting tubular construction of steel reinforcement cage, include steel reinforcement cage and grouting
Pipe 1,3,2 grout pipes 1 of longitudinal reinforcement 2 and transverse steel that steel reinforcement cage includes interconnection are spaced longitudinal direction and isometric are connected to steel
In muscle cage, the interior diameter of the grout pipe 1 used in the present embodiment is 150mm, the coating steel pipe that wall thickness is 4.5mm.
The lower end of the grout pipe 1 has the cylindrical portion 10 that length is 75mm and the round platform portion that length is 75mm successively
11, the coaxial same footpath of cylindrical portion 10 and grout pipe 1, round platform portion 11 and cylindrical portion 10 are coaxial, and the length in round platform portion 11 is 75mm, small end
With 10 same footpath of cylindrical portion, taper 1：2.5, i.e. the large port interior diameter in round platform portion is 180mm.
Prefabricated mortar internal model 13 and concrete chock plug 12 fill up cylindrical portion 10 and the round platform portion 11 of grout pipe 1, prefabricated mortar
The thickness of internal model 13 is 25mm.
The present embodiment is the steel reinforcement cage that a phase groove section uses, and the second stage of groove section respective side of the steel reinforcement cage is welded with I-steel
Joint 4（The steel reinforcement cage of the second stage of groove section does not have I-shaped steel joint）.
First, after the completion of the diaphram wall of the second stage of groove section is all constructed using steel reinforcement cage of the present utility model, stop in construction
Need only to drill underground continuous wall bottom during water curtain with lower part grout hole, effectively save drilled drawing-core quantities
（Note：The general effective wall depth of ground-connecting-wall is 35~55m）, improve rate of penetration and saved the expense of drilled drawing-core, add
Fast sealing progress, accelerates excavation of foundation pit progress, improves excavation of foundation pit safety coefficient indirectly.
Claims (4)
1. the diaphram wall reserved grouting tubular construction of steel reinforcement cage, includes steel reinforcement cage and grout pipe（1）, steel reinforcement cage includes phase
The longitudinal reinforcement to connect（2）And transverse steel（3）, 2~3 grout pipes（1）Longitudinal direction is isometric to be connected in steel reinforcement cage, its feature
It is：The grout pipe（1）Lower end there is cylindrical portion successively（10）With round platform portion（11）, cylindrical portion（10）With grout pipe
（1）Coaxial same footpath, length are 50~100mm, round platform portion（11）With cylindrical portion（10）Coaxially, length be 50~100mm, small end with
Cylindrical portion（10）Same footpath, taper 1：2~3.
2. the diaphram wall according to claim 1 reserved grouting tubular construction of steel reinforcement cage, it is characterised in that：Concrete plug
Head（12）Fill up grout pipe（1）Cylindrical portion（10）With round platform portion（11）.
3. the diaphram wall according to claim 1 reserved grouting tubular construction of steel reinforcement cage, it is characterised in that：Prefabricated mortar
Internal model（13）With concrete chock plug（12）Fill up grout pipe（1）Cylindrical portion（10）With round platform portion（11）.
4. the diaphram wall reserved grouting tubular construction of steel reinforcement cage according to claim 1 or 2 or 3, it is characterised in that：It is right
The steel reinforcement cage that one phase groove section uses, the second stage of groove section respective side of the steel reinforcement cage are welded with I-shaped steel joint（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720891707.5U CN206916733U (en) | 2017-07-21 | 2017-07-21 | The diaphram wall reserved grouting tubular construction of steel reinforcement cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720891707.5U CN206916733U (en) | 2017-07-21 | 2017-07-21 | The diaphram wall reserved grouting tubular construction of steel reinforcement cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206916733U true CN206916733U (en) | 2018-01-23 |
Family
ID=61347777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720891707.5U Active CN206916733U (en) | 2017-07-21 | 2017-07-21 | The diaphram wall reserved grouting tubular construction of steel reinforcement cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206916733U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411557A (en) * | 2020-09-21 | 2021-02-26 | 广东华隧建设集团股份有限公司 | Underground continuous wall and micro-disturbance omnibearing jet grouting pile combined water stopping method |
| CN113653030A (en) * | 2021-07-22 | 2021-11-16 | 中国建筑第八工程局有限公司 | Construction method of underground continuous wall of ultra-low clearance and ultra-deep foundation pit under high-voltage line |
-
2017
- 2017-07-21 CN CN201720891707.5U patent/CN206916733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411557A (en) * | 2020-09-21 | 2021-02-26 | 广东华隧建设集团股份有限公司 | Underground continuous wall and micro-disturbance omnibearing jet grouting pile combined water stopping method |
| CN113653030A (en) * | 2021-07-22 | 2021-11-16 | 中国建筑第八工程局有限公司 | Construction method of underground continuous wall of ultra-low clearance and ultra-deep foundation pit under high-voltage line |
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