CN205712084U - A kind of boring backfill The End-bearing Piles Foundation - Google Patents
A kind of boring backfill The End-bearing Piles Foundation Download PDFInfo
- Publication number
- CN205712084U CN205712084U CN201620331636.9U CN201620331636U CN205712084U CN 205712084 U CN205712084 U CN 205712084U CN 201620331636 U CN201620331636 U CN 201620331636U CN 205712084 U CN205712084 U CN 205712084U
- Authority
- CN
- China
- Prior art keywords
- pile
- backfill
- stake
- stake holes
- cement mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a kind of boring backfill The End-bearing Piles Foundation；Pile foundation is made up of stake holes, prefabricated pile body, cement mixture hardened layer, stake circumference packing course.Construction method is: position and hole at the bottom of hole close to or part go deep into holding force rock stratum；The cement mixture of predetermined thickness is injected in stake holes；Backfill residue stake holes；Before mixture condenses, carry out hammer piling at the center backfilling stake holes, make pile body run through backfill layer and cement mixture fills packing course, squeeze and be embedded in holding force rock stratum.Pile foundation described in the utility model can run through the rock stratum that direct hammer piling difficulty penetrates and prevent pile top sliding；Cement mixture can reinforce destroyed supporting course to be increased bearing capacity and prevents top softening of water seepage supporting course；Backfill layer can when pile sinking by compacted and to pile body provide constraint.Be applicable to strong, weathered mudstone, sandstone supporting course, that especially interlayer is thick, boulder is many, mechanical hole building easily collapses and supporting course rises and falls is big, the gradient is steep, meet the complicated geological that water easily softens.
Description
Technical field
The utility model belongs to construction foundation working technical field, relates to a kind of boring backfill The End-bearing Piles Foundation.
Background technology
Concrete pile foundation, as a kind of conventional ground situation, is widely used in each field of civil engineering.No matter
Being cast-in-situ bored pile or the prefabricated pile of hammering or static pressure construction, it is real that concrete pile foundation passes through engineering for many years both at home and abroad
Trample application, have accumulated a large amount of experience and successful case, it was demonstrated that such base form technology maturation simultaneously has compared with other type of foundations
Significant advantage.
In recent years, under the special geologic condition in some areas, owing to the stratum on holding force rock stratum has some strength,
Cause general hammering or static pressure construction that prefabricated pile cannot be made to pass through these stratum and reach preferable holding force rock stratum, or holding force rock stratum
End face has certain inclination be easily caused an end generation sliding and then produce impact to building safety, and these situations all leverage pre-
The application of stake processed.
At present, industry replants, by first boring, the combination that the method into prefabricated pile defines a class prefabricated pile external wrapping concrete
Pile foundation, this kind of pile foundation overcomes above-mentioned disadvantageous geologic condition, improves the bearing capacity of pile foundation, and work progress king-pile
Body not damaged, without soil compaction effect, noiselessness vibrate, easily realize that the planting the plurality of advantages such as stake of major diameter prefabricated pile has wide
Application prospect.
But these boring combined piles foundation preparation process need to pour into a mould a large amount of cement mixture in stake holes, before condensation
When implanting prefabricated pile, cement mixture is little to provide the constraint of stake week, and the calibration of prefabricated pile puts in place, Jointing etc. operates tired
Difficult.The geology of more loose easy collapse hole for soil property, easily causes some quality problems, and the construction period is by cement mixture age
Impact and longer.Not only wasting raw material, forming process also wastes time and energy, and overall economic efficiency is relatively low.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides one boring backfill end-bearing pile base at this
Plinth, is extended through the structure design of design rock stratum by stake holes, cement mixture hardened layer, backfill layer, prefabricated pile body center, it is achieved
Difficult penetrate running through of rock stratum, form the constraint of stake week by pile tube injection compacted backfill layer simultaneously, eliminate stake end sliding risk, add
Consolidate holding force rock stratum, solve the softening impact on holding force rock stratum for the top infiltration, decrease the pile damage risk of work progress,
Simplify pile extension operation, reduce the material consumption that pile foundation makes.
The utility model is achieved in that offer one boring backfill The End-bearing Piles Foundation, it is characterised in that: include stake
Hole, prefabricated pile body, cement mixture hardened layer, stake circumference four parts of packing course, wherein close bottom the stake holes of preboring or part
Going deep into holding force rock stratum, cement mixture hardened layer is positioned at bottom stake holes, and cement mixture hardened layer tightens pile extension circumference packing course, in advance
Pile body processed includes precast pile and pile top, pile top run through down stake circumference packing course and cement mixture hardened layer and squeeze be embedded in holding force
In rock stratum.
According to boring backfill The End-bearing Piles Foundation described in the utility model, it is characterised in that: the stake holes degree of depth is 5-80m, directly
Footpath is 300-1800mm, gos deep into a length of 0-20m of supporting course.
According to boring backfill The End-bearing Piles Foundation described in the utility model, it is characterised in that: prefabricated pile body includes prefabricated pile
Body and pile top, pile body diameter or the length of side are 200-1200mm, and pile body includes but is not limited to prestressed concrete pipe pile, prestressing force mixes
In solidifying soil hollow square pile, prestressed concrete solid pile and other special-shaped precast piles, pile top includes but is not limited to concrete
Soil pile top, pre-manufactured steel pile top.
According to boring backfill The End-bearing Piles Foundation described in the utility model, it is characterised in that: cement mixture hardened layer bag
Including but being not limited to cement mortar, mortar, concrete, compression strength is 1-50MPa, and thickness is 0-10m, under cement mixture hardened layer
Portion be filled in pile tip hammer penetrate rock fragment that bearing bed destroys, in crackle, top and the stake packing course that surrounds is staggered.
According to described in the utility model boring backfill The End-bearing Piles Foundation, it is characterised in that: stake circumference packing course include but not
Being limited to the earthwork, dirt, sand material, boring slag, solid slag, using the loose backfill do not tamped, backfill layer thickness is 1-80m.
According to boring backfill The End-bearing Piles Foundation described in the utility model, it is characterised in that: prefabricated pile body axle center and stake holes
Axle center deviation is less than 50mm, and pile top one end injection of prefabricated pile body passes through gos deep into holding force rock stratum 0.5-10m bottom stake holes.
According to boring backfill The End-bearing Piles Foundation described in the utility model, it is characterised in that: The End-bearing Piles Foundation passes through subdrilling
Hole, then grouting and backfill, finally hammer piling before grouting material hardening.
The construction method of a kind of backfill The End-bearing Piles Foundation of holing, comprises the following steps:
A () is holed to stake holes in precalculated position close to or partly gos deep into holding force rock stratum；
B () injects the cement mixture of predetermined thickness in stake holes；
C () remains stake holes with backfill material backfill；
D () mixture condenses before, carry out the hammer piling of prefabricated pile at the stake holes center having backfilled, make prefabricated pile run through back
Packing course and grout blanket, squeeze and be embedded in holding force rock stratum；
E () stands maintenance and reaches predetermined strength to cement mixture.
The stake holes degree of depth in described step (a) is 5-80m, a diameter of 300-1800mm, gos deep into a length of 0-of supporting course
20m。
Cement mixture in described step (b) includes but is not limited to cement mortar, mortar, concrete, and compression strength is 1-
50MPa, thickness is 0-10m, and cement mixture is under-filled penetrates rock fragment, the crackle that bearing bed destroys in pile tip hammer
In, top is staggered with backfill layer.
Backfill material in described step (c) includes but is not limited to the earthwork, dirt, sand material, boring slag, solid slag, uses
The loose backfill do not tamped, backfill layer thickness is 1-80m.
Prefabricated pile body in described step (d) includes precast pile (5) and pile top (6), and pile body diameter or the length of side are 200-
1200mm, it is solid that pile body includes but is not limited to prestressed concrete pipe pile, pre-stressed concrete hollow square stake, prestressed concrete
In square pile and other special-shaped precast piles, pile top includes but is not limited to precast concrete pile top, pre-manufactured steel pile top.
Prefabricated pile body axle center in described step (d) is less than 50mm, pile top one end of prefabricated pile body with stake holes axle center deviation
Injection passes through gos deep into holding force rock stratum 0.5-10m bottom stake holes.
The utility model has the advantage of: by the through difficult rock stratum penetrating of stake holes, make the pile top go deep into holding force rock stratum simultaneously
Prevent sliding, add pile body bearing capacity；The cement mixture hardened layer at the stake end strengthens the holding force rock destroying when pile top is squeezed into
Layer, increases lifting surface area and bearing capacity of pile foundation, still prevents top infiltration and softens impact to bearing course at pile end；Backfill layer is at pipe
Stake is extruded closely knit after squeezing into, and provides constraint to prefabricated pile body；And described pile foundation is last by grouting backfill again of first holing
The mode of hammer piling makes, and its soil compaction effect is little compared with direct hammering, the advantage having hammer piling and drilling pile concurrently.It is applicable to
By force, the mud stone of middle rate of decay, sandstone supporting course, blocked up to interlayer, boulder is more, mechanical hole building when easy collapse hole and supporting course
Meet the complicated geological that water easily softens, the supporting course big rise and fall gradient is steeper especially suitable.
Brief description
Fig. 1 is the profile of described pile foundation.
In figure: the 1st, stake holes, the 2nd, prefabricated pile body, the 3rd, cement mixture hardened layer, the 4th, stake circumference packing course, the 5th, precast pile, the 6th,
Pile top.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, the utility model is described in detail, to the technical side in the utility model embodiment
Case is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the utility model, rather than
Whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work
Under the premise of the every other embodiment that obtained, broadly fall into the scope of the utility model protection.
It as it is shown in figure 1, the utility model provides a kind of boring backfill The End-bearing Piles Foundation at this, is specifically achieved in that
Embodiment 1
According to geology and execution conditions use drilling machine in pile position by 400mm borehole to going deep into holding force rock stratum
1m, boring slag charge uses dry row's form to discharge.
Clear hole, once injects M7.5 mortar 0.5 side with certain denseness in stake holes.
Mortar injects after finishing, and the slag charge that backfill boring is discharged in stake holes is to completely filling out.
Backfill finish after, mortar condense before, will be equipped with precast concrete pile top a diameter of 300mm PHC pile tube by
Hammer piling construction method adjusts positioning at stake holes center, makes pile body axis and stake holes axle center deviation be less than 30mm, hammer piling,
Midway can pile extension, exceed bottom stake holes embedded supporting course until pipe pile end portion and meet till pile penetration requires.
Embodiment 2
According to geology and execution conditions use drilling machine in pile position by 600mm borehole to going deep into holding force rock stratum
5m, boring slag charge uses dry row's form to discharge.
Clear hole, once injects 1:0.5 high-consistency cement mortar 1 side mixed with thickener in stake holes.
Cement mortar injects after finishing, and backfills solid slag until completely filling out in stake holes.
After backfill finishes, before cement mortar condenses, will be equipped with the PHC pile tube of a diameter of 500mm of steel pile tip by hammering
Pile sinking construction method adjusts positioning at stake holes center, makes pile body axis and stake holes axle center deviation be less than 30mm, hammer piling, halfway
Can pile extension, exceed bottom stake holes embedded supporting course until pipe pile end portion and meet till pile penetration requires.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses this practicality new
Type.Multiple modifications to these embodiments will be apparent from for those skilled in the art, is determined herein
The General Principle of justice can realize in the case of without departing from spirit or scope of the present utility model in other embodiments.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The wide scope consistent with features of novelty.
Claims (6)
1. a boring backfill The End-bearing Piles Foundation, it is characterised in that: include that stake holes (1), prefabricated pile body (2), cement mixture are hard
Changing layer (3), stake circumference (4) four parts of packing course, wherein stake holes (1) base section of preboring gos deep into holding force rock stratum, cement mix
Thing hardened layer (3) is positioned at stake holes (1) bottom, and cement mixture hardened layer (3) tightens pile extension circumference packing course (4), prefabricated pile body (2)
Including precast pile (5) and pile top (6), pile top (6) run through down stake circumference packing course (4) and cement mixture hardened layer (3) and
Squeeze and be embedded in holding force rock stratum.
2. boring backfill The End-bearing Piles Foundation according to claim 1, it is characterised in that: stake holes (1) degree of depth is 5-80m, directly
Footpath is 300-1800mm, gos deep into a length of 0-20m of supporting course.
3. boring backfill The End-bearing Piles Foundation according to claim 1, it is characterised in that: prefabricated pile body includes precast pile
(5) and pile top (6), pile body (5) diameter or the length of side are 200-1200mm, and pile body (5) is that prestressed concrete pipe pile, prestressing force mix
Solidifying soil hollow square pile or prestressed concrete solid pile, pile top (6) is precast concrete pile top or pre-manufactured steel pile top.
4. boring backfill The End-bearing Piles Foundation according to claim 1, it is characterised in that: cement mixture hardened layer (3) resists
Compressive Strength is 1-50MPa, and thickness is 0-10m, cement mixture hardened layer (3) under-filled pile tip hammer penetrate bearing bed break
In bad rock fragment, crackle, top and stake circumference packing course (4) are staggered.
5. boring backfill The End-bearing Piles Foundation according to claim 1, it is characterised in that: stake circumference packing course (4) uses and does not rams
Real loose backfill, backfill layer thickness is 1-80m.
6. boring backfill The End-bearing Piles Foundation according to claim 1, it is characterised in that: prefabricated pile body (2) axle center and stake holes
(1) axle center deviation is less than 50mm, and pile top one end injection of prefabricated pile body (2) passes through gos deep into holding force rock stratum 0.5-10m bottom stake holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620331636.9U CN205712084U (en) | 2016-04-20 | 2016-04-20 | A kind of boring backfill The End-bearing Piles Foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620331636.9U CN205712084U (en) | 2016-04-20 | 2016-04-20 | A kind of boring backfill The End-bearing Piles Foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205712084U true CN205712084U (en) | 2016-11-23 |
Family
ID=57298799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620331636.9U Active CN205712084U (en) | 2016-04-20 | 2016-04-20 | A kind of boring backfill The End-bearing Piles Foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205712084U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780766A (en) * | 2016-04-20 | 2016-07-20 | 四川华西管桩工程有限公司 | Drilling backfill end bearing pile foundation and construction method thereof |
-
2016
- 2016-04-20 CN CN201620331636.9U patent/CN205712084U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780766A (en) * | 2016-04-20 | 2016-07-20 | 四川华西管桩工程有限公司 | Drilling backfill end bearing pile foundation and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7326004B2 (en) | Apparatus for providing a rammed aggregate pier | |
| CN204059124U (en) | A kind of sand drain strong rammer grouting behind shaft or drift lining foundation reinforcing structure | |
| CN107417182B (en) | Expansion type high polymer cement slurry, grouting reinforcement device and grouting reinforcement method | |
| CN103233454A (en) | Processing method of soaking, vacuum preloading and slurry injecting for sand piles of collapsible loess foundation | |
| KR100762991B1 (en) | Precast piling method injected with high-strength mortar | |
| CN103184734A (en) | Implanted and grouted compound pile and construction method | |
| CN106948340B (en) | A kind of construction method of the Manual excavated pile structure of high polymer grouting protection | |
| CN105780766A (en) | Drilling backfill end bearing pile foundation and construction method thereof | |
| CN105569071B (en) | A kind of slip casting under water of cement-based material or mud jacking block ground mass foundation construction | |
| CN105714773A (en) | Foundation treatment method | |
| CN104746505A (en) | Method for treating miscellaneous fill foundation combing dynamic consolidation and compaction grouting | |
| CN106522191A (en) | Transformer substation foundation treatment method and application thereof | |
| CN111794216A (en) | Construction method of uplift carrier pile | |
| CN104099925A (en) | Construction device for concrete pile and construction method thereof | |
| CN111636417A (en) | Grouting type steel pipe pile and construction method thereof | |
| CN112761166A (en) | Construction method for shallow foundation pit of combined support of piles and pre-grouting steel pipes based on SMW (soil mixing wall) construction method | |
| CN113863294B (en) | PHC pipe pile internally provided with pile end grouting device and construction process thereof | |
| CN212336070U (en) | Karst foundation variable-rigidity primary-secondary pile | |
| CN108824412A (en) | Based on gabion wall reinforced earth and strong tamping combined soft base processing method | |
| CN205712084U (en) | A kind of boring backfill The End-bearing Piles Foundation | |
| CN103821140A (en) | Constructing method for reinforcing soft soil foundations | |
| CN114164726B (en) | Local deep excavation backfill structural roadbed and rapid construction method | |
| CN103015438A (en) | Collapsible loess subgrade landslide treatment method | |
| CN202787275U (en) | Tubular soil nailing wall of novel pneumatic impact anchor | |
| RU121274U1 (en) | ARTIFICIAL REINFORCED BASIS FOR ESTABLISHED OR RECONSTRUCTED BUILDING |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |