CN204326064U - The bored pile of over filling is controlled in a kind of ultra-soft soil layer - Google Patents
The bored pile of over filling is controlled in a kind of ultra-soft soil layer Download PDFInfo
- Publication number
- CN204326064U CN204326064U CN201420786221.1U CN201420786221U CN204326064U CN 204326064 U CN204326064 U CN 204326064U CN 201420786221 U CN201420786221 U CN 201420786221U CN 204326064 U CN204326064 U CN 204326064U
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- Prior art keywords
- ultra
- soil layer
- soft soil
- reinforcing cage
- full sleeve
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- Expired - Fee Related
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- 239000002689 soil Substances 0.000 title claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 238000004873 anchoring Methods 0.000 claims description 2
- 238000005056 compaction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to the bored pile controlling over filling in a kind of ultra-soft soil layer, the reinforcing cage surrounding of this pile body in ultra-soft soil layer influence basin arranges anti-full sleeve, hole wall surrounding in ultra-soft soil layer influence basin carries out the process of layering compaction grouting, anti-full sleeve is the provisional protection facility with some strength, concrete can be effectively stoped to be dissolved in ultra-soft soil layer, control over filling, there is cost low, do not affect pile body construction quality, different according to the number of plies of ultra-soft soil layer, at reinforcing cage higher slice, anti-full sleeve is set, also can arrange along reinforcing cage total length, layering compaction grouting serves duplicate protection to concrete over filling together with anti-full sleeve.
Description
Technical field
The utility model relates to a kind of pile body controlling concrete over filling, particularly controls the technology of concrete over filling in a kind of ultra-soft soil layer in bored pile formation of pile.
Background technology
Concrete is the main material in Grouting Pile Engineering of Drilling Hole, and concrete expense accounts for 20 ~ 25% of Pile Grouting total cost.By regulation in " technical code for building pile foundation " (JGJ94-2008): pouring pile hole aperture >=design stake footpath, concrete fullness coefficient >=1.0, general soil property is 1.1, and soft clay area is 1.2 ~ 1.3.It is prevent the footpath too little (being less than design stake footpath) from occurring thin stake and specifying lower limit that fullness coefficient is greater than 1.0; 1.3 is prevent that a footpath is excessive occurs the problem such as lopsided stake and material over-expense and set upper limit.Be that thin stake or lopsided stake all have adverse effect to the quality of stake, and lopsided stake also increase concrete use the most greatly, adds engineering cost.Common engineering expense budget fullness coefficient gets 1.2, maximum can not more than 1.3.Practice shows: when fullness coefficient often increases by 0.01, and only cost of materials one will increase 1.0 ~ 1.3% of engineering total cost, and single pile design amount of concrete is larger, and the impact that fullness coefficient causes engineering total cost is larger.In Practical Project, if in foundation soil containing one deck even multilayer ultra-soft soil layer time, when carrying out the concrete casting of bored pile, concrete is often caused to flow in ultra-soft soil layer in a large number, the fullness coefficient of bored pile is caused to be greater than 1.3 even more, cause pile body deformity, considerably increase cost, therefore, in super soft clay area, in order to control fullness coefficient, normal employing increases the proportion of mud and stops and flow in the ultra-soft soil layer of surrounding during concrete casting, or adopt the technique of local delamination slip casting to strengthen the lateral restraint ability of ultra-soft soil layer to prevent concrete loss, but said structure or method are cured the symptoms, not the disease, and be subject to the condition change of Practical Project, stability is inadequate.In addition, when carrying out major diameter or super-large diameter bored pile construction, the drawback of said structure or method can be more and more significant.
Therefore, need badly at present and seek a kind ofly can ensure bored pile pile quality and the not high super soft clay area bored pile measure of cost seems very important.
Utility model content
The purpose of this utility model overcomes deficiency of the prior art, provides the bored pile controlling over filling in a kind of ultra-soft soil layer.
Control the bored pile of over filling in this ultra-soft soil layer, the reinforcing cage at ultra-soft soil layer place overlaps full sleeve of setting up defences; Anti-full sleeve adopts dowel and reinforcing cage to carry out anchoring, and anti-filling arranges topping controll block between sleeve and reinforcing cage; Described reinforcing cage is distributed with stirrup.
Control the bored pile of over filling in aforesaid ultra-soft soil layer, the described anti-full upper and lower two ends of sleeve exceed ultra-soft soil layer.
Control the bored pile of over filling in aforesaid ultra-soft soil layer, the number of plies of corresponding ultra-soft soil layer, anti-full sleeve is set at reinforcing cage higher slice, or anti-full sleeve is set along reinforcing cage total length.
The beneficial effects of the utility model are:
The utility model arranges anti-full sleeve according to the distribution of ultra-soft soil layer, and when effectively preventing concreting, a large amount of concrete flow in ultra-soft soil layer, namely solves engineering roadblock, in turn saves construction cost.
Anti-full sleeve in the utility model is a kind of temporary preventive measure, and adopt environmental friendliness shaped material to make, cost is low; and do not affect the intensity of pile body; in addition, also serve the effect ensureing reinforcing cage thickness of concrete cover, ensure that pile quality to a certain extent.
Anti-full sleeve in the utility model and dowel also play certain Confinement effect to the lateral deformation of reinforcing cage, can improve the supporting capacity of pile body to a certain extent.
In the utility model, layering compaction grouting is carried out to the hole wall surrounding of ultra-soft soil layer; the intensity of ultra-soft soil layer can be improved to a certain extent; certain protective action is played to the concrete flowing of suppression, together with anti-full sleeve, duplicate protection is served to concrete over filling.
The utility model within the scope of ultra-soft soil layer during concreting, adopts suitably to improve and builds speed, repeatedly builds the mode of multipass up and down, namely reduce concrete full in technical measures, can ensure concrete pouring quality again.
Accompanying drawing explanation
Fig. 1 is anti-full sleeve and reinforcing cage connection layout;
Fig. 2 is boring and mud off figure;
Fig. 3 is that reinforcing cage inserts and concreting figure;
Fig. 4 is the bored pile schematic diagram controlling over filling in ultra-soft soil layer.
Description of reference numerals: anti-full sleeve 1, reinforcing cage 2, topping controll block 3, mud 4, casing 5, conduit 6, ultra-soft soil layer 7, funnel 8, concrete 9, dowel 10, stirrup 11, hole wall 12, drill bit 13, slush pump 14, rig 15.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.Although the utility model will be described in conjunction with preferred embodiment, should know, not represent the utility model restriction in the described embodiment.On the contrary, the utility model will contain can be included in attached claims limit scope of the present utility model in alternative, modified and equivalent.
With reference to Fig. 1; data is surveyed according to scene; it is 5 ~ 10m that the depth bounds of the ultra-soft soil layer 7 determined is counted from earth's surface; the reinforcing cage 2 that making length is 20m, diameter is 0.8m; and stirrup 11 and topping controll block 3 are set every 200mm; suitably stirrup 11 is encrypted within the scope of stake footpath, 5 times, reinforcing cage 2 two ends; the topping controll block 3 of each section is no less than 3; make the anti-full sleeve 1 that 8m is long; and adopt dowel 10 to be arranged in 3.5m ~ 11.5m scope of reinforcing cage 2 by anti-full sleeve 1, form the reinforcing cage 2 with anti-full sleeve 1.
With reference to Fig. 2, by rig 15, slush pump 14 emplace, casing 5 is set within the scope of the 2m of top, transfer drill bit 13 to spud in, employing reverse circulation bores, form diameter to be 1.2m and the degree of depth be the hole wall 12 of 20.5m, the marginal not of limit boring simultaneously slurry, prevent hole wall 12 from caving in, layering compaction grouting is carried out in ultra-soft soil layer 7 scope, diffusion way is infiltration ~ splitting type, grout spreading range controls at 1.2 ~ 1.8m, compaction grouting Stress control is at 2 ~ 3MPa, compaction grouting speed is 15L/min, the proportion of mud 4 is 1.1 ~ 1.2, viscosity is 20Pas, sand factor is less than 4%, pH value is 9.
With reference to Fig. 3, conduit 6 is goed deep into bottom hole wall 12, funnel 8 is set on conduit 6 top, C40 concrete 9 is poured in funnel, along with constantly pouring into of concrete 9, progressively slowly on pull out conduit 6, on to pull out speed be 0.25m/min, when on pull out in anti-full sleeve 1 scope, improve that conduit pulls out speed is 0.5m/min, but in anti-full sleeve 1 scope, each carrying out for 2 times repeats to build up and down, extract conduit 6 with the speed of 0.25m/min afterwards, and extract casing 5, form the bored pile shown in Fig. 4.
Claims (3)
1. control a bored pile for over filling in ultra-soft soil layer, it is characterized in that: the upper cover of the reinforcing cage (2) at ultra-soft soil layer (7) place is set up defences full sleeve (1); Prevent that full sleeve (1) adopts dowel (10) and reinforcing cage (2) to carry out anchoring, anti-filling arranges topping controll block (3) between sleeve (1) and reinforcing cage (2); Described reinforcing cage (2) is distributed with stirrup (11).
2. control the bored pile of over filling in ultra-soft soil layer according to claim 1, it is characterized in that: described anti-full sleeve (1) exceeds ultra-soft soil layer (7) in two ends up and down.
3. in ultra-soft soil layer according to claim 1, control the bored pile of over filling, it is characterized in that: the number of plies of corresponding ultra-soft soil layer (7), anti-full sleeve (1) is set at reinforcing cage (2) higher slice, or anti-full sleeve (1) is set along reinforcing cage (2) total length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786221.1U CN204326064U (en) | 2014-12-12 | 2014-12-12 | The bored pile of over filling is controlled in a kind of ultra-soft soil layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786221.1U CN204326064U (en) | 2014-12-12 | 2014-12-12 | The bored pile of over filling is controlled in a kind of ultra-soft soil layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204326064U true CN204326064U (en) | 2015-05-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420786221.1U Expired - Fee Related CN204326064U (en) | 2014-12-12 | 2014-12-12 | The bored pile of over filling is controlled in a kind of ultra-soft soil layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204326064U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589703A (en) * | 2018-07-26 | 2018-09-28 | 大成科创基础建设股份有限公司 | Bored concrete pile prevents superfilled device |
| CN110700245A (en) * | 2019-11-26 | 2020-01-17 | 江西思绮建筑劳务有限公司 | Construction method of cast-in-place pile |
-
2014
- 2014-12-12 CN CN201420786221.1U patent/CN204326064U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589703A (en) * | 2018-07-26 | 2018-09-28 | 大成科创基础建设股份有限公司 | Bored concrete pile prevents superfilled device |
| CN108589703B (en) * | 2018-07-26 | 2023-08-04 | 大成科创基础建设股份有限公司 | Anti-overcharging device for filling pile |
| CN110700245A (en) * | 2019-11-26 | 2020-01-17 | 江西思绮建筑劳务有限公司 | Construction method of cast-in-place pile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Zhonghui Inventor after: Ding Junming Inventor after: Chu Dechun Inventor after: Xu Huaping Inventor after: Chen Shichao Inventor after: Guo Jin Inventor before: Wang Xinquan |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180427 Address after: 330002 1352 Jinggangshan Avenue, Xihu District, Nanchang, Jiangxi. Patentee after: JIANGXI PROVINCE LUQIAO ENGINEERING GROUP CO.,LTD. Address before: 310003 Room 405, Yun Tian Fortune Center, 63, North Ring Road, Hangzhou, Zhejiang. Patentee before: HANGZHOU JIANGRUN TECHNOLOGY Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 |