CN107642092A - A kind of pile foundation post grouting construction method and post jacking device - Google Patents
A kind of pile foundation post grouting construction method and post jacking device Download PDFInfo
- Publication number
- CN107642092A CN107642092A CN201710859668.5A CN201710859668A CN107642092A CN 107642092 A CN107642092 A CN 107642092A CN 201710859668 A CN201710859668 A CN 201710859668A CN 107642092 A CN107642092 A CN 107642092A
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- China
- Prior art keywords
- pile foundation
- shower nozzle
- steel pipe
- post
- mud jacking
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000002002 slurry Substances 0.000 claims abstract description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims abstract description 13
- 230000001070 adhesive effect Effects 0.000 claims abstract description 13
- 240000002636 Manilkara bidentata Species 0.000 claims abstract description 12
- 235000016302 balata Nutrition 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 229920002472 Starch Polymers 0.000 claims abstract description 4
- 235000019698 starch Nutrition 0.000 claims abstract description 4
- 239000011083 cement mortar Substances 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 239000012744 reinforcing agent Substances 0.000 claims description 4
- 239000011398 Portland cement Substances 0.000 claims description 3
- -1 anilinomethyl Chemical group 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000003908 quality control method Methods 0.000 claims description 3
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 7
- 238000007582 slurry-cast process Methods 0.000 description 5
- 230000007812 deficiency Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
Abstract
A kind of method that pile foundation post grouting construction is carried out the invention discloses pile foundation post jacking device and using the device, the pile foundation post jacking device includes mud jacking shower nozzle, the mud jacking shower nozzle is fixedly welded on the lower end of pile foundation sounding steel pipe, the mud jacking shower nozzle includes body and the duckbilled positioned at body end, and No. 8 iron wires of a circle are welded with the crossover position of body and duckbilled；Slurry outlet is provided with the side wall of the body, drawing pin is packed with slurry outlet, is enclosed with balata belt and adhesive waterproof tape on the outside of body, balata belt and adhesive waterproof tape cause the head of a nail of drawing pin to be close to the outer wall of body.The present invention is simple in construction, cheap and only starches excellent effect.
Description
Technical field
The present invention relates to the realm of building construction, relates in particular to a kind of pile foundation post grouting construction method and post jacking device
A kind of pile foundation post grouting construction method and post jacking device.
Background technology
Pile foundation has high capacity, settles small, easy to make, flexible arrangement and fit as a kind of special deep foundation
With condition it is extensive the advantages that, more and more important effect is played in field of civil engineering, but due to stake bottom in Practical Project
Sediment, loosened soil cleaning be not clean, or stake week is produced one layer of mudcake using mud off, so as to reduce between stake and the soil body
The reasons such as side friction, cause bearing capacity of pile foundation insufficient, have a negative impact to construction quality and safety.Pile foundation post-grouting technology
This defect is compensate for well, and pile foundation post jacking refers to after pile reaches certain age, and plug is opened to pre-buried slip casting passage
And the cement mortar jacked pile end of certain pressure, Pile side soil layer are played infiltration to Pile side soil body by slurries, filled out with grouting pump
Fill, densification, splitting, the effect such as consolidation come strengthen an end, Pile side soil strength and stiffness, increase stake side shearing section resistance and
Roughness, stake end bearing capacity, pile side friction, the effect for reducing sedimentation are improved so as to reach.
Need to use the devices such as grouting pump, Grouting Pipe, slurry casting machine, grouting stop-valve, existing market during pile foundation post jacking
Not only expense is expensive for the slurry casting machine of upper purchase, grouting stop-valve etc., and sealing is poor, and in practice of construction, slurry casting machine occurs various
Problem, especially severe is that soil and powder on pit bottom sand easily pour in Grouting Pipe, causes slurry casting machine to fail, so that slurry casting machine can not
Normal work, success rate is extremely low, extends construction period to a certain extent and adds construction costs；During other post jacking
Vertically arranged slip casting steel pipe 3-5 roots are usually required per pile, slip casting steel pipe dosage is larger, also increases construction costs.
In addition, can not effectively be permeated for the geological conditions of hypotonicity, in general cement mortar permeability deficiency, slurries,
Either intensity deficiency.
The content of the invention
For overcome the deficiencies in the prior art, it is an object of the present invention to provide a kind of simple in construction, cheap and only slurry effect
Excellent pile foundation post jacking device and the method using its progress pile foundation post grouting construction.
To reach above-mentioned purpose, present invention employs following technical scheme：
A kind of pile foundation post jacking device, it includes mud jacking shower nozzle, and the mud jacking shower nozzle is fixedly welded under pile foundation sounding steel pipe
End, the mud jacking shower nozzle include body and the duckbilled positioned at body end, one are welded with the crossover position of body and duckbilled
Enclose No. 8 iron wires；Slurry outlet is provided with the side wall of the body, drawing pin is packed with slurry outlet, rubber is enclosed with the outside of body
Belt and adhesive waterproof tape, balata belt and adhesive waterproof tape cause the head of a nail of drawing pin to be close to the outer wall of body.
Further, the slurry outlet is arranged on tube wall in blossom type.
Further, the duckbilled is directly formed by the flat welding of end hammer of body.
A kind of pile foundation post grouting construction method, is comprised the steps of：
Step 1：Rotary digging drilling hole；
Step 2：Fabrication of reinforcing cage；
Step 3：Pile foundation sounding steel pipe is set on the inside of reinforcing cage stirrup, and in the lower end of pile foundation sounding steel pipe welding mud jacking spray
Head；The pile foundation sounding steel pipe is uniformly arranged along around steel reinforcement cage, three sounding steel pipes of setting per pile, under every sounding steel pipe
Weld a mud jacking shower nozzle in end；The mud jacking shower nozzle includes body and the duckbilled positioned at body end, in body and duckbilled
Crossover position be welded with No. 8 iron wires of a circle；Slurry outlet is provided with the side wall of the body, drawing pin is packed with slurry outlet,
Balata belt and adhesive waterproof tape are enclosed with the outside of body, balata belt and adhesive waterproof tape cause the head of a nail of drawing pin to be close to body
Outer wall；
Step 4：Lift by crane placing of reinforcement cage；
Step 5：Connect post jacking equipment：Sounding steel pipe is connected by high-pressure hose and grouting pump, grouting pump are then connected to cement
Starch agitator；The cement mortar is added with sodium ethoxide alkalescence permeation promoter and anilinomethyl by Portland cement mixing
Triethoxysilane reinforcing agent；
Step 6：Pour into a mould pile foundation concrete；
Step 7：After pile foundation reaches certain age, by grouting pump by the cement mortar jacked pile end in cement mixer barrel；Slip casting
Quality control uses grouting amount and grouting pressure dual control method, controlled with the quantity of the cement injected based on, supplemented by pumping end pressure control；
Step 8：Remove mud jacking equipment more than sounding steel pipe.
Further, the process of clear water splitting is also included before step 7, i.e., first pressure injection clear water opens squeezing unit
Unidirectional grout structure.
Beneficial effects of the present invention：
（1）By the use of the sounding steel pipe of late detection pile foundation quality as Grouting Pipe, save in addition it is special set Grouting Pipe into
Sheet and process, and because sounding steel pipe is together with pile foundation steel bar cage banding fixed, squeezing unit enters jointly with pile foundation steel bar cage
Enter pore-forming, items safeguard measure co-ordination when transferring pile foundation steel bar cage so that madjack pipe when mud jacking shower nozzle enters stake substratum
Interior cleanliness without any pollution, so as to reach the purpose that the work of pile foundation post jacking can be smoothed out.
（2）Wrap up in balata belt outside using drawing pin and adhesive waterproof tape forms unidirectional only slurry structure, eliminate special buy and stop
The expense of valve is starched, unidirectional only slurry construction of the invention can bear deep layer high water head pressure and not be damaged, and prevent silt from pouring in pipe
Block, and can makes slurries smoothly discharge without flowing back.
（3）The device of the present invention can increase the initial kinetic energy that cement mortar in post jacking work enters soil layer, be advantageous to press
Slurry work is smoothed out.
（4）Apparatus of the present invention are simple in construction, are easy to processing on real-time at the construction field (site), remaining construction content can be put down with pile foundation
Row operation, accelerating construction progress；And processing live can be drawn materials, and can carry out twice laid, and construction operation content uses
It is accomplished manually, construction cost is greatlyd save compared with market is bought.
（5）Alkaline permeation promoter and silanes reinforcing agent are with the addition of in cement mortar used in the present invention, slurries can be significantly improved
Permeability and intensity.
Brief description of the drawings
Fig. 1 is scheme of installation of the post jacking device of the present invention in pile foundation engineering.
Fig. 2 is schematic view of the mounting position of the post jacking device of the present invention on pile foundation steel bar cage.
Fig. 3 is the front view of mud jacking shower nozzle.
Fig. 4 is the side view of mud jacking shower nozzle.
Fig. 5 is the structural representation of the A-A sections in Fig. 3.
Fig. 6 is the structural representation of the B-B sections in Fig. 3.
In figure, 1- mud jacking shower nozzles；2- sounding steel pipes；3- bodys；4- duckbilleds；5-8 iron wires；6- slurry outlets；7- drawing pins；8-
Balata belt；9- adhesive waterproof tapes；10- pile foundation concrete；11- steel reinforcement cages.
Embodiment
As shown in figures 1 to 6, a kind of pile foundation post jacking device, it includes mud jacking shower nozzle 1, and the mud jacking shower nozzle is fixedly welded on
The lower end of pile foundation sounding steel pipe 2, the mud jacking shower nozzle 1 includes body 3 and the duckbilled 4 positioned at body end, in body 3 and duck
The crossover position of mouth 4 is welded with No. 8 iron wires 5 of a circle；Slurry outlet 6 is provided with the side wall of the body 3, is clogged in slurry outlet 6
There is drawing pin 7, balata belt 8 and adhesive waterproof tape 9 are enclosed with the outside of body, balata belt 8 and adhesive waterproof tape 9 cause drawing pin 7
The head of a nail be close to the outer wall of body 3；The slurry outlet 6 is arranged in the side wall of body 3 in blossom type；The duckbilled 4 is directly by pipe
The flat welding of end hammer of body 3 is formed.
Pile foundation post grouting construction is carried out using above-mentioned post jacking device to comprise the following steps：
Step 1：Rotary digging drilling hole；
Step 2：Fabrication of reinforcing cage；
Step 3：Pile foundation sounding steel pipe is set on the inside of reinforcing cage stirrup, and in the lower end of pile foundation sounding steel pipe welding mud jacking spray
Head；The pile foundation sounding steel pipe is uniformly arranged along around steel reinforcement cage, three sounding steel pipes of setting per pile, under every sounding steel pipe
Weld a mud jacking shower nozzle in end；
Step 4：Lift by crane placing of reinforcement cage；
Step 5：Connect post jacking equipment：Sounding steel pipe is connected by high-pressure hose and grouting pump, grouting pump are then connected to cement
Starch agitator；The cement mortar is added with sodium ethoxide alkalescence permeation promoter and anilinomethyl by Portland cement mixing
Triethoxysilane reinforcing agent；
Step 6：Pour into a mould pile foundation concrete；
Step 7：After pile foundation reaches certain age, by grouting pump by the cement mortar jacked pile end in cement mixer barrel；Slip casting
Quality control uses grouting amount and grouting pressure dual control method, controlled with the quantity of the cement injected based on, supplemented by pumping end pressure control；
Step 8：Remove mud jacking equipment more than sounding steel pipe.
Claims (5)
- A kind of 1. pile foundation post grouting construction method, it is characterised in that comprise the steps of：Step 1：Rotary digging drilling hole；Step 2：Fabrication of reinforcing cage；Step 3：In steel reinforcement cage（11）Pile foundation sounding steel pipe is set on the inside of stirrup（2）, and welded in the lower end of pile foundation sounding steel pipe Mud jacking shower nozzle（1）；The pile foundation sounding steel pipe is uniformly arranged along around steel reinforcement cage, three sounding steel pipes of setting per pile, every Weld a mud jacking shower nozzle in sounding steel pipe lower end；The mud jacking shower nozzle（1）Including body（3）And positioned at body end Duckbilled（4）, in body（3）With duckbilled（4）Crossover position be welded with No. 8 iron wires of a circle（5）；The body（3）Side wall on It is provided with slurry outlet（6）, slurry outlet（6）Inside it is packed with drawing pin（7）, body outside is enclosed with balata belt（8）And marine glue Band（9）, balata belt（8）And adhesive waterproof tape（9）So that drawing pin（7）The head of a nail be close to body（3）Outer wall；Step 4：Lift by crane placing of reinforcement cage；Step 5：Connect post jacking equipment：Sounding steel pipe is connected by high-pressure hose and grouting pump, grouting pump are then connected to cement Starch agitator；The cement mortar is added with sodium ethoxide alkalescence permeation promoter and anilinomethyl by Portland cement mixing Triethoxysilane reinforcing agent；Step 6：Pour into a mould pile foundation concrete；Step 7：After pile foundation reaches certain age, by grouting pump by the cement mortar jacked pile end in cement mixer barrel；Slip casting Quality control uses grouting amount and grouting pressure dual control method, controlled with the quantity of the cement injected based on, supplemented by pumping end pressure control；Step 8：Remove mud jacking equipment more than sounding steel pipe.
- 2. a kind of pile foundation post grouting construction method according to right wants 1, it is characterised in that also include before step 7 clear The process of water splitting, i.e., first pressure injection clear water open the unidirectional grout structure of squeezing unit.
- 3. a kind of pile foundation post jacking device, it includes mud jacking shower nozzle（1）, the mud jacking shower nozzle is fixedly welded on pile foundation sounding steel pipe （2）Lower end, it is characterised in that：The mud jacking shower nozzle（1）Including body（3）And the duckbilled positioned at body end（4）, in pipe Body（3）With duckbilled（4）Crossover position be welded with No. 8 iron wires of a circle（5）；The body（3）Side wall on be provided with slurry outlet （6）, slurry outlet（6）Inside it is packed with drawing pin（7）, body outside is enclosed with balata belt（8）And adhesive waterproof tape（9）, rubber peel Band（8）And adhesive waterproof tape（9）So that drawing pin（7）The head of a nail be close to body（3）Outer wall.
- A kind of 4. pile foundation post jacking device according to right wants 3, it is characterised in that the slurry outlet（6）In body（3）Side Arranged on wall in blossom type.
- A kind of 5. pile foundation post jacking device according to right wants 3, it is characterised in that：The duckbilled（4）Directly by body（3） End hammer it is flat welding formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859668.5A CN107642092A (en) | 2017-09-21 | 2017-09-21 | A kind of pile foundation post grouting construction method and post jacking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710859668.5A CN107642092A (en) | 2017-09-21 | 2017-09-21 | A kind of pile foundation post grouting construction method and post jacking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107642092A true CN107642092A (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710859668.5A Pending CN107642092A (en) | 2017-09-21 | 2017-09-21 | A kind of pile foundation post grouting construction method and post jacking device |
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| CN (1) | CN107642092A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759290A (en) * | 2017-03-19 | 2017-05-31 | 马鞍山宏泰建材股份有限公司 | A kind of grouting behind shaft or drift lining pile foundation and its grouting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078282A (en) * | 1992-05-08 | 1993-11-10 | 东北金城建筑安装工程总公司地基基础工程处 | Pile shoe pouring process and special reinforcing steel cage thereof |
| CN201232182Y (en) * | 2008-08-01 | 2009-05-06 | 中铁十七局集团第二工程有限公司 | Post-mud jacking apparatus for bottom and lateral of bored pile |
| CN105239563A (en) * | 2015-10-27 | 2016-01-13 | 贵州开磷建设集团有限公司 | Dry-method hole forming filling pile structure for post-grouting matched rotary drilling rig and construction method |
| CN105625303A (en) * | 2014-11-28 | 2016-06-01 | 大连市市政设计研究院有限责任公司 | Post-grouting technology for cast-in-situ bored pile |
| CN207392205U (en) * | 2017-09-21 | 2018-05-22 | 中建一局集团第二建筑有限公司 | A kind of pile foundation post jacking device |
-
2017
- 2017-09-21 CN CN201710859668.5A patent/CN107642092A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078282A (en) * | 1992-05-08 | 1993-11-10 | 东北金城建筑安装工程总公司地基基础工程处 | Pile shoe pouring process and special reinforcing steel cage thereof |
| CN201232182Y (en) * | 2008-08-01 | 2009-05-06 | 中铁十七局集团第二工程有限公司 | Post-mud jacking apparatus for bottom and lateral of bored pile |
| CN105625303A (en) * | 2014-11-28 | 2016-06-01 | 大连市市政设计研究院有限责任公司 | Post-grouting technology for cast-in-situ bored pile |
| CN105239563A (en) * | 2015-10-27 | 2016-01-13 | 贵州开磷建设集团有限公司 | Dry-method hole forming filling pile structure for post-grouting matched rotary drilling rig and construction method |
| CN207392205U (en) * | 2017-09-21 | 2018-05-22 | 中建一局集团第二建筑有限公司 | A kind of pile foundation post jacking device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759290A (en) * | 2017-03-19 | 2017-05-31 | 马鞍山宏泰建材股份有限公司 | A kind of grouting behind shaft or drift lining pile foundation and its grouting method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20180130 |