CN206467661U - The resistance to compression attachment structure of secondary splitting grouting - Google Patents
The resistance to compression attachment structure of secondary splitting grouting Download PDFInfo
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- CN206467661U CN206467661U CN201720086290.5U CN201720086290U CN206467661U CN 206467661 U CN206467661 U CN 206467661U CN 201720086290 U CN201720086290 U CN 201720086290U CN 206467661 U CN206467661 U CN 206467661U
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Abstract
A kind of resistance to compression attachment structure of secondary splitting grouting is disclosed in the utility model, bushing pipe is embedded on the inwall of secondary grouting pipe and feed pipe for mortar joint, the pressure of cement mortar only breaks through the tube wall of bushing pipe, secondary grouting pipe and feed pipe for mortar could be impacted, pipe sleeve is then coated on outside tube wall from secondary grouting pipe and feed pipe for mortar outer wall direction, coordinate bushing pipe inside and outside together while the tube wall of fixed secondary grouting pipe and feed pipe for mortar, weakness to pipeline in water under high pressure mud cleaving process carries out emphasis reinforcement, by changing the attachment structure between secondary grouting pipe and feed pipe for mortar, structure at two interface tubes is strengthened, the probability that reduction water under high pressure mud collapses out at interface tube.
Description
Technical field
The utility model is related to the realm of building construction, the resistance to compression attachment structure of more particularly to a kind of secondary splitting grouting.
Background technology
Anchorage force of pre-stressed anchor cable can be effectively improved using secondary splitting grouting method, especially for those presence
Underground water cranny development or the Rock And Soil that there are weak charges as coal measure strata, it is carried to anchorage force of pre-stressed anchor cable
Ascending effect is particularly evident.
In general, using secondary splitting grouting method anchorage cable anchoring power can be made at least to improve more than 2 times.Once grouting
Pressure can not be any limitation as, as long as bolthole aperture overflow slurries, that is, suspend slip casting, then close aperture, voltage stabilizing
1min or so, you can terminate slip casting.Once grouting cement injection pressure is 0.5MPa or so under normal circumstances, and the slip casting time is general
For 20min~1h, in particular cases up to 1h~45min.
And Twice High Pressure Splitting Grouting is to reach 5.0MPa (4~6h) to the cement consolidating strength formed in once grouting
Shi Jinhang's, 0.5~1.5MPa of grouting pressure, up to 2.0MPa.Secondary grouting pipe used during secondary grouting, be with advance
Stress anchor cable is together brought into bolthole, and the pipe end of secondary grouting pipe stretches out a segment distance outside bolthole.Split in secondary high-pressure
Split before slip casting starts, the feed pipe for mortar on high-pressure grout injector is connected with reserved secondary grouting pipe exposed portion by pipe joint, with
Water under high pressure mud is delivered in anchor pole, feed pipe for mortar and secondary grouting pipe is taken after the completion of slip casting apart, and block on secondary grouting pipe
Expose the part of bolthole.
It is water under high pressure mud flow line between secondary grouting pipe and feed pipe for mortar during actual progress Twice High Pressure Splitting Grouting
On weak spot, often problem appear to is that the interface of two pipes bears huge impulsive force in practice, often because powerful
Impulsive force and collapse out, very big puzzlement is caused to work progress.
Utility model content
First purpose of the present utility model is the resistance to compression attachment structure for providing a kind of secondary splitting grouting, by changing
Attachment structure between secondary grouting pipe and feed pipe for mortar, strengthens structure at two interface tubes, reduction water under high pressure mud from
The probability collapsed out at interface tube.
Above-mentioned purpose of the present utility model technical scheme is that：A kind of secondary splitting grouting it is anti-
The secondary grouting pipe in attachment structure, including the pre-buried pre-hardening cement mortar in bolthole is pressed, and for connecting high-pressure slip-casting
The feed pipe for mortar of machine, it is characterized in that, resistance to compression attachment means, the resistance to compression connection are provided between the secondary grouting pipe and feed pipe for mortar
Device includes the interior bushing pipe for being lining in the secondary grouting pipe and feed pipe for mortar inwall, is coated on outside secondary grouting pipe and/or feed pipe for mortar
The pipe sleeve in portion, and fix the fixing device at the pipe sleeve two ends.
By using above-mentioned technical proposal, high-pressure grout injector is opened, it is necessary to note when carrying out secondary grouting into bolthole
The cement mortar pressure entered rive initial set cement mortar, cement mortar is put aside in secondary grouting pipe and feed pipe for mortar and built the pressure, now, defeated
Joint between slurry pipe and secondary grouting pipe is the weakness of whole pipeline, and the cement mortar pressure gradually risen can be in this position
Burst apart tube wall, and increased bushing pipe is embedded in secondary grouting pipe and on the inwall of feed pipe for mortar joint, the pressure of cement mortar only has punching
The tube wall of broken bushing pipe, could be impacted, pipe sleeve is then from secondary grouting pipe and feed pipe for mortar outer wall to secondary grouting pipe and feed pipe for mortar
Direction is coated on outside tube wall, coordinates bushing pipe inside and outside together while the tube wall of secondary grouting pipe and feed pipe for mortar is fixed, to water under high pressure
The weakness of pipeline carries out emphasis reinforcement in mud cleaving process, it is ensured that the grouting pressure of secondary splitting grouting will not destroy secondary injection
Slurry pipe and feed pipe for mortar.
Preferably, the bushing pipe is steel pipe.
By using above-mentioned technical proposal, bushing pipe is the tube wall for directly bearing cement mortar pressure, using steel pipe as bushing pipe, can
To lift the voltage endurance capability of resistance to compression attachment means.
Preferably, the pipe sleeve is the pvc pipe that opening is provided with tube wall.
By using above-mentioned technical proposal, after an important feature of pvc pipe is opening, tube wall can shrink to axis direction
Resilience, using this property of pvc pipe, can be such that sleeve pipe reliably fits on the outer wall of secondary grouting pipe and/or feed pipe for mortar, with
Increase the contact area of tube wall.
Preferably, the fixing device is pipe clamp or the iron wire being wound in outside pipe sleeve.
By using above-mentioned technical proposal, pipe clamp or iron wire can fix the two ends of pipe sleeve, prevent pipe sleeve in secondary injection
Shifted during slurry.
Preferably, the locating flange that diameter dimension is more than bushing pipe outer diameter is provided with the mid-length of the bushing pipe,
The pipe sleeve is divided into two sections along bushing pipe axis direction, and is fixed respectively by fixing device.
By using above-mentioned technical proposal, in order to ensure that cement mortar is flowed through from bushing pipe without walking bushing pipe outer wall and secondary injection
Gap between slurry pipe or feed pipe for mortar, bushing pipe needs the inwall with secondary grouting pipe and feed pipe for mortar to be fitted close, difficult during insertion
In the position for ensureing bushing pipe insertion, when secondary grouting pipe or feed pipe for mortar too small with bushing pipe intubating length, quivering during slip casting
Dynamic to open junction shake, using locating flange as positioning datum, secondary grouting pipe and feed pipe for mortar insertion depth have mark
Fixed, to ensure that bushing pipe is located in the middle of secondary grouting pipe and feed pipe for mortar as far as possible, two ends are fixed respectively again.Locating flange can rise simultaneously
To the effect of increase bushing pipe intensity.
In summary, the utility model has the advantages that：Bushing pipe is embedded in secondary grouting pipe and engaged with feed pipe for mortar
On the inwall at place, the pressure of cement mortar only breaks through the tube wall of bushing pipe, and secondary grouting pipe and feed pipe for mortar could be impacted, pipe
Set is then coated on outside tube wall from secondary grouting pipe and feed pipe for mortar outer wall direction, coordinates bushing pipe inside and outside together while fixed secondary injection
The tube wall of slurry pipe and feed pipe for mortar, the weakness to pipeline in water under high pressure mud cleaving process carries out emphasis reinforcement, it is ensured that secondary splitting
The grouting pressure of slip casting will not destroy secondary grouting pipe and feed pipe for mortar.
Brief description of the drawings
Fig. 1 is the secondary topology view for cleaving high-pressure slip-casting device;
Fig. 2 is the topology view of resistance to compression attachment means;
Fig. 3 is the explosive view of resistance to compression attachment means;
Fig. 4 is the explosive view of resistance to compression attachment means in embodiment 2.
In figure：1st, feed pipe for mortar；2nd, secondary grouting pipe；3rd, resistance to compression attachment means；31st, bushing pipe；32nd, pipe sleeve；321st, it is open；
33rd, pipe clamp；331st, circular arc steel ring；332nd, boss；333rd, wing bolt；334th, nut；34th, locating flange；4th, prestressed anchor
Bar.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment 1
A kind of device of secondary splitting high-pressure slip-casting, as shown in figure 1, the feed pipe for mortar 1 including connecting high-pressure grout injector, secondary
Resistance to compression attachment means 3 between Grouting Pipe 2, and connection feed pipe for mortar 1 and secondary grouting pipe 2.
With reference to Fig. 2 and Fig. 3, resistance to compression attachment means 3 include bushing pipe 31, pipe sleeve 32 and the pipe clamp 33 that steel are made.Bushing pipe
31 are embedded inside feed pipe for mortar 1 and secondary grouting pipe 2, and the outside dimension and feed pipe for mortar 1 and secondary grouting pipe 2 of bushing pipe 31
Internal diameter size matches, with when mounted, and the outer wall of bushing pipe 31 is brought into close contact on the inwall of feed pipe for mortar 1 and secondary grouting pipe 2,
First prevent bushing pipe 31 from being moved under the impact of water under high pressure mud；It is another then, the outer wall of bushing pipe 31 is adjacent to feed pipe for mortar 1 and secondary grouting
The inwall of pipe 2, between the two in the absence of gap, the cement mortar of output will not be in feed pipe for mortar 1 and secondary grouting in high-pressure grout injector
The joint of pipe 2 produces pressure drop, it is ensured that splitting effect.
Pipe sleeve 32 is the pvc pipe that an opening 321 is offered along its generatrix direction, and pipe sleeve 32 is socketed on feed pipe for mortar 1 and two
The outer wall of secondary Grouting Pipe 2, pipe sleeve 32 is located at the centre position of feed pipe for mortar 1 and secondary grouting pipe 2, meanwhile, the length of pipe sleeve 32 is small
In the length of bushing pipe 31, so that bushing pipe 31 is also locked during pipe sleeve 32 is locked.Because pvc pipe itself possesses resilience
Matter, along after its generatrix direction opening, pipe sleeve 32 is wrapped in feed pipe for mortar 1 and secondary injection under the elastic recoil property effect of itself
The outside of bushing pipe 31 is embedded between slurry pipe 2, the annexation of three sections of pipes is gripped with screen resilience.
For fixed pipe sleeve 32 and feed pipe for mortar 1 and secondary grouting pipe 2, the two ends of pipe sleeve 32 are each provided with least one pipe clamp
33, pipe clamp 33 includes circular arc steel ring 331, and the outside dimension of the internal diameter size and pipe sleeve 32 of circular arc steel ring 331 matches, circle
The two ends outward bending of arc-shaped steel ring 331, is formed between two relative boss 332, two boss 332 in symmetrical screwed hole
On be equipped with wing bolt 333, wing bolt 333 stretches out one of boss 332, and wing bolt 333 stretches out boss 332
Nut 334 is separately installed with position.Nut 334 is tightened, pipe clamp 33 is locked with pipe sleeve 32.
Embodiment 2
A kind of device of secondary splitting high-pressure slip-casting, as shown in figure 4, the difference of itself and embodiment 1 is：The length of bushing pipe 31
When degree center sets one section of locating flange 34, connecting secondary Grouting Pipe 2 and feed pipe for mortar 1, the mouths of pipe of two pipes is to contradict convex
On the basis of edge 34, so, secondary grouting pipe 2 is equal with the length that feed pipe for mortar 1 is covered on bushing pipe 31, it is ensured that secondary grouting
Pipe 2 and feed pipe for mortar 1 are symmetrical with the mid-length of bushing pipe 31.
It is on the other side, pipe sleeve 32 is socketed on after feed pipe for mortar 1 and secondary grouting pipe 2 respectively, while locking pipe clamp 33
Two nuts 334, bushing pipe 31, the mouth of pipe of secondary grouting pipe 2, the mouth of pipe of feed pipe for mortar 1 and pipe sleeve 32 are thoroughly locked, then
Carry out secondary splitting grouting process.
Embodiment 3
A kind of secondary splitting high Pressure Grouting Construction Method, its construction method is as follows：
S1 is drilled using jumbolter or Luoyang Spade on foundation pit side-wall, forms bolthole, also, use jumbolter
Or the manual pore-forming of Luoyang Spade, depending on the soil property of foundation pit side-wall；
S2 take a segment length adapt to bolthole hole depth pipe as secondary grouting pipe 2, and on secondary grouting pipe 2
Some slurry outlets are opened up, to prevent the cement mortar of first time slip casting from blocking slurry outlet, are made reprisals one layer outside secondary grouting pipe 2
Film, now it should be noted that the thickness and material of film, it is necessary to assure the cement mortar of high-pressure slip-casting can break through, with first
The cement mortar that secondary grouting pipe 2 is separated during slip casting with injecting for the first time is separated, and can be by high pressure cement in secondary splitting grouting
Slurry breaks through；
S3 is by the colligation of secondary grouting pipe 2 after previous step on prestressed anchor 4, and secondary grouting pipe 2 is with prestressing force
Anchor pole 4 is put into the bolthole being drilled；
S4 carries out first slip casting to the region between prestressed anchor 4 and bolthole, waits cement mortar initial set to be implanted,
And preliminary progress next step operation afterwards energetically；
The end for exposing bolthole on secondary grouting pipe 2 is socketed on one end of bushing pipe 31 by S5, and the other end of bushing pipe 31 is embedding
Enter to connect the inwall of the feed pipe for mortar 1 of high-pressure grout injector in succession；
S6 takes one section of pvc pipe, and an opening 321 is cut into along generatrix direction, forms pipe sleeve；
Pipe sleeve 32 is socketed on the outer wall of secondary grouting pipe 2 and feed pipe for mortar 1 by S7；
S8 respectively sets a pipe clamp 33 on pipe sleeve 32 close to the position at two ends, and locks two butterflies on pipe clamp 33
Nut 333, bushing pipe 31, secondary grouting pipe 2, feed pipe for mortar 1 and pipe sleeve 32 are thoroughly locked；
S7 opens high-pressure grout injector, and cement mortar high pressure is injected, from the cement mortar of the interior ejection of secondary grouting pipe 2 first
By the concrete splitting of once grouting initial set, then the lithosome formation slurry arteries and veins around splitting, realizes the densification soil body, filling is split
Seam, increase soil body compression strength, reduce soil body permeability.
It should be pointed out that when using the resistance to compression attachment means in embodiment 2, in step s 5, with locating flange 34
For boundary, the end of secondary grouting pipe 2 and the end of feed pipe for mortar 1 are respectively held against the both sides of locating flange 24, then take two sections of pipes
Set 32, and the nestable body on the both sides of stationary positioned flange 34 respectively.
This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability
Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but
As long as all being protected in right of the present utility model by Patent Law.
Claims (5)
1. the secondary injection in a kind of resistance to compression attachment structure of secondary splitting grouting, including the pre-buried pre-hardening cement mortar in bolthole
Slurry pipe, and for connecting the feed pipe for mortar of high-pressure grout injector, it is characterized in that, it is provided between the secondary grouting pipe and feed pipe for mortar
Resistance to compression attachment means, the resistance to compression attachment means include interior bushing pipe, the cladding for being lining in the secondary grouting pipe and feed pipe for mortar inwall
Pipe sleeve outside secondary grouting pipe and/or feed pipe for mortar, and fix the fixing device at the pipe sleeve two ends.
2. the resistance to compression attachment structure of secondary splitting grouting according to claim 1, it is characterized in that, the bushing pipe is steel pipe.
3. the resistance to compression attachment structure of secondary splitting grouting according to claim 1 or 2, it is characterized in that, the pipe sleeve is pipe
The pvc pipe of opening is provided with wall.
4. the resistance to compression attachment structure of secondary splitting grouting according to claim 3, it is characterized in that, the fixing device is pipe
Press from both sides or be wound in the iron wire outside pipe sleeve.
5. the resistance to compression attachment structure of secondary splitting grouting according to claim 4, it is characterized in that, in the length of the bushing pipe
The locating flange that diameter dimension is more than bushing pipe outer diameter is provided with point, the pipe sleeve is divided into two along bushing pipe axis direction
Section, and fixed respectively by fixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720086290.5U CN206467661U (en) | 2017-01-22 | 2017-01-22 | The resistance to compression attachment structure of secondary splitting grouting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720086290.5U CN206467661U (en) | 2017-01-22 | 2017-01-22 | The resistance to compression attachment structure of secondary splitting grouting |
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| CN206467661U true CN206467661U (en) | 2017-09-05 |
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| CN201720086290.5U Active CN206467661U (en) | 2017-01-22 | 2017-01-22 | The resistance to compression attachment structure of secondary splitting grouting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108331031A (en) * | 2018-02-08 | 2018-07-27 | 中建六局土木工程有限公司 | A kind of anti-float anchor rod waterproof construction method |
| CN108343065A (en) * | 2017-01-22 | 2018-07-31 | 北京爱地地质勘察基础工程公司 | The resistance to compression connection structure and construction method of secondary splitting grouting |
-
2017
- 2017-01-22 CN CN201720086290.5U patent/CN206467661U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108343065A (en) * | 2017-01-22 | 2018-07-31 | 北京爱地地质勘察基础工程公司 | The resistance to compression connection structure and construction method of secondary splitting grouting |
| CN108343065B (en) * | 2017-01-22 | 2023-08-29 | 北京爱地地质勘察基础工程公司 | Compression-resistant connection structure for secondary splitting grouting and construction method |
| CN108331031A (en) * | 2018-02-08 | 2018-07-27 | 中建六局土木工程有限公司 | A kind of anti-float anchor rod waterproof construction method |
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