CN203808078U - Locating structure for supporting drilled grouting pile - Google Patents
Locating structure for supporting drilled grouting pile Download PDFInfo
- Publication number
- CN203808078U CN203808078U CN201420187470.9U CN201420187470U CN203808078U CN 203808078 U CN203808078 U CN 203808078U CN 201420187470 U CN201420187470 U CN 201420187470U CN 203808078 U CN203808078 U CN 203808078U
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- Prior art keywords
- pile
- supporting
- concrete wall
- grouting pile
- location structure
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- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 abstract description 17
- 238000009412 basement excavation Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 238000009415 formwork Methods 0.000 abstract 2
- 239000002689 soil Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model discloses a locating structure for a supporting drilled grouting pile. The locating structure is composed of a plurality of locating structure units in an arrayed mode. Each locating structure unit comprises a concrete wall, a locating formwork, a PVC pipe and reinforcing steel bars, wherein the concrete wall is arranged on the periphery of the pile position of the supporting drilled grouting pile, and the depth of the concrete wall is 1.0m-1.5m below the top elevation of the supporting drilled grouting pile; the locating formwork is arranged in the concrete wall and located at the pile position of the supporting drilled grouting pile; the PVC pipe is arranged in the concrete wall, located at the pile position of a high-pressure jet grouting pile and used for forming a high-pressure jet grouting pile preformed hole; the reinforcing steel bars are arranged at the bottom of the concrete wall in a supporting mode. Through the locating structure, the pile position of the supporting drilled grouting pile can be accurately determined, the regular shape of the supporting drilled grouting pile is ensured, repeated measurement of the position of a lofting pile is avoided, and the locating structure creates favorable conditions for construction of enclosing purlins and lateral braces; meanwhile, it is effectively guaranteed that the pile position of the high-pressure jet grouting pile is accurate and the waterstop effect is good, the safety and stability of excavation of a foundation pit are improved, and the locating structure brings convenience to excavation of the foundation pit.
Description
Technical field
The utility model belongs to geotechnical engineering field, specifically, relates to one and is applicable to deep soft soil foundation supporting bored pile location structure.
Background technology
At present, bored pile is used for the soldier pile of foundation pit supporting construction, is applicable to Deep Thick Soft Ground Area, utilizes soil body lateral pressure outside campshed body opposing foundation ditch, prevents that the soil body is subjected to displacement.For guaranteeing that each pile body is subject to outer lateral earth pressure equilibrium, the stake position of every pile, spacing must be accurately, but the phenomenons such as the supporting bored pile mark of field lofting is subject to place weak soil, manual operation, mechanically operatedly affects the deflection that mostly occurs, topples over, loss.Therefore, the location of supporting bored pile needs survey engineer repeatedly to carry out unwrapping wire to determine position, and the large and precision of repeated workload is difficult to ensure.In foundation pit supporting system, high-pressure rotary jet grouting pile is set between supporting bored pile conventionally in addition, for resisting the pore water of the outer soil body in hole, prevents foundation ditch internal water accumulation.Pile of High-pressure Spiral Jet position is affected by Soft Soil Layer in place, hydraulic reclamation layer of sand, block stone layer etc., often inaccurate, especially design the Construction of High Pressure Jet Grouting Pile difficult quality guarantee between two supporting bored piles, not tight with the interlock of supporting bored pile, thereby do not reach sealing requirement, affect excavation of foundation pit safety and construction speed.
Therefore, need to explore the supporting bored pile location structure making new advances and solve this difficult problem.
Utility model content
The technical problems to be solved in the utility model is, bored pile construction of the prior art need repeated measurement unwrapping wire and construction precision low, a kind of supporting bored pile location structure is provided, this location structure can ensure the accurate positioning of deep soft soil foundation bored pile construction, improve Construction of High Pressure Jet Grouting Pile quality, met sealing requirement.
In order to solve the problems of the technologies described above, the utility model is achieved by following technical scheme:
A kind of supporting bored pile location structure, this location structure is rearranged by some location structures unit, each described location structure unit comprises and is arranged on supporting Pile position concrete wall around, the length of described concrete wall is 20m～30m, thickness of wall body 0.8m～1.5m, the degree of depth is by the high 1.0m～1.5m downwards of supporting bored pile top mark; Supporting Pile position place is provided with the locating template being arranged in described concrete wall; Pile of High-pressure Spiral Jet position place is provided with the pvc pipe being arranged in described concrete wall, is used to form high-pressure rotary jet grouting pile preformed hole; Described concrete wall bottom has installed reinforced steel.
Wherein, the external diameter of described locating template is identical with supporting Pile footpath, and described locating template end face is higher than described concrete wall end face 0.1～0.3m.
Wherein, described locating template is spliced to form by the steel form of arc, every described steel form edge is provided with the fixing angle steel of using, and between adjacent two described steel forms, interconnects by the bolt being arranged on described angle steel, and described locating template inside has installed inner support reinforcing bar.
Wherein, described pvc pipe end face is higher than described concrete wall end face 0.1～0.3m.
The beneficial effects of the utility model are:
(1) the utility model utilizes concrete wall and locating template, accurately determine supporting Pile position, prevent along with problems such as work progress king-pile position label loss, crooked, displacements, avoid survey engineer duplicate measurements setting-out stake position, simultaneously can ensure supporting bored pile regular shape, thereby construct and create favorable conditions for enclosing purlin and cross binding.
(2) the utility model pre-buried pvc pipe in concrete wall forms high-pressure rotary jet grouting pile preformed hole, effectively guarantee that Pile of High-pressure Spiral Jet position is accurate, thereby can ensure that high-pressure rotary jet grouting pile and supporting bored pile are closely interlocked, and then guarantee that high-pressure rotary jet grouting pile stagnant water effect is good, having improved the security and stability of excavation of foundation pit, is the excavation of foundation pit operation condition that facilitates.
(3) the utility model does not need surveying work personnel repeated work, has avoided the operations of doing over again such as follow-up waterproof, leak stopping, the consumption of having saved human and material resources.
(4) the utility model has improved the construction quality of supporting castinplace pile, has reduced construction cost, and structural safety is reliable.
In sum, the utility model is simple and easy to do, efficiency is high, improved operating efficiency, has saved human and material resources and financial resources.
Brief description of the drawings
Fig. 1 is the plan view of location structure provided by the utility model;
Fig. 2 is the sectional drawing of location structure provided by the utility model;
Fig. 3 is the plan view of locating template;
Fig. 4 is the sectional drawing of locating template;
In figure: 1: concrete wall; 2: locating template; 2-1: steel form; 2-2: bolt; 2-3: inner support reinforcing bar; 2-4: angle steel; 3:PVC pipe; 4: reinforced steel; 5: supporting bored pile; 6: high-pressure rotary jet grouting pile.
Detailed description of the invention
As depicted in figs. 1 and 2, the present embodiment discloses a kind of supporting bored pile location structure, and this location structure is rearranged by some location structures unit, and each location structure unit includes concrete wall 1, locating template 2, pvc pipe 3 and reinforced steel 4.
Concrete wall 1 are arranged on around 5 positions of supporting bored pile, and its length is 20m～30m, thickness of wall body 0.8m～1.5m.The top mark of concrete wall 1 is high high consistent with supporting bored pile 5 top marks, and its degree of depth is 1.0m～1.5m, and concrete wall 1 are positioned at the upper position of supporting bored pile 5.Concrete wall 1 strength grade of concrete that adopts should be more than or equal to C15.
Multiple locating templates 2 are arranged on concrete wall 1 inside, lay respectively at 5 positions of supporting bored pile place.The center of each locating template 2 is consistent with the center of protecting bored pile 5, and 5 footpaths of external diameter and supporting bored pile are identical, for guaranteeing stake position and the shape of supporting bored pile 5.The end face of locating template 2 is higher than concrete wall 1 end face 0.1～0.3m, so that the formation of the dismounting of locating template 2 and supporting bored pile 5 preformed holes also needn't consider in work progress that concreting enters locating template 2 inside, has improved construction efficiency.
As shown in Figure 3 and Figure 4, locating template 2 by four steel form 2-1, inner support reinforcing bar 2-3, bolt 2-2, angle steel 2-4 is special forms.Four steel form 2-1 are quadrant arc, and splicing can form the cylinder locating template 2 that external diameter is 1.2m.The edge of every steel form 2-1 is provided with L20 × 3 equal leg angle 2-4 and makes internal-rib, between adjacent two steel form 2-1, is interconnected and fixed by the M10 × No. 30 bolt 2-2 being arranged on this angle steel 2-4.The junction of every steel form 2-1 is wedge shape, facilitates locating template 2 to remove.Locating template 2 inside install the inner support reinforcing bar 2-3 that diameter is 22mm, prevent that locating template 2 is out of shape.
Multiple diameters are that the pvc pipe 3 of 110 × 3.2mm is arranged on concrete wall 1 inside, lay respectively at 6 positions of high-pressure rotary jet grouting pile place.The center of each pvc pipe 3 is consistent with the center of high-pressure rotary jet grouting pile 6, is used to form high-pressure rotary jet grouting pile 6 preformed holes.The end face of pvc pipe 3 is higher than concrete wall 1 end face 0.1～0.3m, so that concreting block rapid construction avoids concrete to stop up pvc pipe 3 simultaneously.
4 of reinforced steels are located at concrete wall 1 bottom, for improving concrete wall 1 resistance to overturning, make it have certain resistance to tension, are more applicable for soft foundation.
The work progress of above-mentioned supporting bored pile location structure is as follows:
One), after levelling of the land, measure 5 positions of setting-out supporting bored pile, concrete wall 1 from supporting bored pile 5 campshed both sides each wide go out certain width measure setting-out, foundation ditch is according to concrete wall 1 design size excavation;
Two) by after assembled four steel form 2-1, adopt bolt 2-2 to fix, inside installs inner support reinforcing bar 2-3; The locating template 2 of the assembled rear formation of steel form 2-1 exceeds concrete wall 1 end face 0.1m;
Three) high-pressure rotary jet grouting pile 6 is measured to setting-out, adopt the pvc pipe 3 of diameter 110 × 3.2mm as high-pressure rotary jet grouting pile 6 preformed holes, and exceed concrete wall 1 end face 0.1m;
Four) colligation φ 22 reinforced steels 4 improve globality, taking the foundation pit side-wall soil body as exterior sheathing, build C20 concrete to ground level and form concrete wall 1, after concrete initial set, extract steel form 2, after the concrete strength of concrete wall 1 meets the demands, supporting bored pile location structure completes.
Utilize location structure of the present utility model to carry out supporting bored pile 5 while constructing, hole-drilling pile-filling machine can complete pile foundation construction after moving to 5 positions of supporting bored pile, jump and beat every stake, be displaced to next pile position construction, in the time returning to not construction stake position, do not need again to carry out measurement of pile foundation setting-out, accurately guarantee 5 positions of supporting bored pile, simultaneously supporting bored pile 5 pile qualities are effectively guaranteed, for enclosing purlin, stull creates favorable conditions.When construction high-pressure rotary jet grouting pile 6, high-pressure rotary jet grouting pile 6 position, the preformed hole hole constructions that directly form according to pvc pipe 3, can not be subject to the impact that hole-drilling pile-filling machine moves, accurately true fixed pile, the high-pressure rotary jet grouting pile 6 forming can be closely linked with bored pile 5, reaches good stagnant water effect.
Although by reference to the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection domain of the present utility model.
Claims (4)
1. a supporting bored pile location structure, it is characterized in that, this location structure is rearranged by some location structures unit, each described location structure unit comprises and is arranged on supporting Pile position concrete wall around, the length of described concrete wall is 20m～30m, thickness of wall body 0.8m～1.5m, the degree of depth is by the high 1.0m～1.5m downwards of supporting bored pile top mark; Supporting Pile position place is provided with the locating template being arranged in described concrete wall; Pile of High-pressure Spiral Jet position place is provided with the pvc pipe being arranged in described concrete wall, is used to form high-pressure rotary jet grouting pile preformed hole; Described concrete wall bottom has installed reinforced steel.
2. a kind of supporting bored pile location structure according to claim 1, is characterized in that, the external diameter of described locating template is identical with supporting Pile footpath, and described locating template end face is higher than described concrete wall end face 0.1～0.3m.
3. a kind of supporting bored pile location structure according to claim 1, it is characterized in that, described locating template is spliced to form by the steel form of arc, every described steel form edge is provided with fixing with angle steel, between adjacent two described steel forms, interconnect by the bolt being arranged on described angle steel, described locating template inside has installed inner support reinforcing bar.
4. a kind of supporting bored pile location structure according to claim 1, is characterized in that, described pvc pipe end face is higher than described concrete wall end face 0.1～0.3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187470.9U CN203808078U (en) | 2014-04-17 | 2014-04-17 | Locating structure for supporting drilled grouting pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187470.9U CN203808078U (en) | 2014-04-17 | 2014-04-17 | Locating structure for supporting drilled grouting pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808078U true CN203808078U (en) | 2014-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420187470.9U Expired - Lifetime CN203808078U (en) | 2014-04-17 | 2014-04-17 | Locating structure for supporting drilled grouting pile |
Country Status (1)
| Country | Link |
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| CN (1) | CN203808078U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002891A (en) * | 2015-07-29 | 2015-10-28 | 北京城建北方建设有限责任公司 | Earth-among-pile excavation-free construction method for cast-in-situ bored piles |
| CN105926815A (en) * | 2016-05-10 | 2016-09-07 | 江苏东晟新诚建设集团有限公司 | Integrated construction method for board wall formwork and support formwork in restricted area |
| CN106320323A (en) * | 2015-06-25 | 2017-01-11 | 昆明捷程桩工有限责任公司 | Detachable steel mold guide wall plate of occlusive piles |
-
2014
- 2014-04-17 CN CN201420187470.9U patent/CN203808078U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320323A (en) * | 2015-06-25 | 2017-01-11 | 昆明捷程桩工有限责任公司 | Detachable steel mold guide wall plate of occlusive piles |
| CN105002891A (en) * | 2015-07-29 | 2015-10-28 | 北京城建北方建设有限责任公司 | Earth-among-pile excavation-free construction method for cast-in-situ bored piles |
| CN105926815A (en) * | 2016-05-10 | 2016-09-07 | 江苏东晟新诚建设集团有限公司 | Integrated construction method for board wall formwork and support formwork in restricted area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |