CN109440802A - The tamper dentiform pile and its construction method haveing excellent performance - Google Patents
The tamper dentiform pile and its construction method haveing excellent performance Download PDFInfo
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- CN109440802A CN109440802A CN201811595209.1A CN201811595209A CN109440802A CN 109440802 A CN109440802 A CN 109440802A CN 201811595209 A CN201811595209 A CN 201811595209A CN 109440802 A CN109440802 A CN 109440802A
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- pile
- tooth
- tamper
- dentiform
- trapezoidal
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of tamper dentiform pile haveing excellent performance and its construction method, which includes pile body, and several stepped tooths are equipped at intervals on pile body, and stepped tooth is that trapezoidal narrow tooth or trapezoidal wide tooth are alternately distributed with trapezoidal narrow tooth.Ultimate bearing capacity of single pile of the present invention improves significant, and more conventional tubular pole improves 60% or more, and more cast-in-situ concrete poured stake improves 70% ~ 90%, improves 35% compared with the groove surface drainage pile with tamper, and reliable in quality, controllable.Pile follower depth of the invention can strive for the on-stream time of engineering and greatly shorten the duration, save a large amount of earth and stone digging amount in foundation pit periphery, speed of application is fast, at low cost, is conducive to antidetonation up to 12 ~ 15m.
Description
Technical field
The present invention relates to a kind of dentiform pile, especially a kind of tamper dentiform pile haveing excellent performance further relates to its construction method.
Background technique
Current various stakes are constructed in soft subgrade soil, are all had the following deficiencies:
A. cast-in-situ concrete poured stake (including: long spire, churning driven, vibration sinking tube etc.) is constructed in soft subgrade soil, pile body coagulation
Soil is also easy to produce recess, leakage muscle, broken pile and other issues.
B. prestressed-concrete pile is constructed in soft subgrade soil, encounters the big cohesive soil of gravel layer, layer of sand, silty sand ground, hardness
When the geological conditions such as layer, then pressure is unable to satisfy design bearing capacity requirement less than projected depth.
Based on above-mentioned deficiency, although the prior art has the groove surface drainage pile with tamper so that ultimate bearing capacity of single pile compared with
Tubular pole improves 20% ~ 30%, but there is also Railway Projects:
(a) parameter of tooth is unreasonable on pile body, and test ultimate bearing capacity of single pile improves 20% ~ 30% this data, is sedimentation 4cm
Stop, if there is building load, then will not stopping, event that necessarily something terrible happens.
(b) pile body structure design has drainage hole, not only influences production efficiency, has an effect on construction efficiency.
(c) its construction technology is vibration sinking tube pore-forming, with 3 tons or more of weight carries out base expanding and base expanding again, then arranges groove face
Water stake is put into immersed tube, and is promoted hopper and poured into tamper between stake and immersed tube inner wall, and immersed tube is finally just extracted.After construction
Also every pile is carried out drawing water repeatedly, this construction technology is many and diverse, and speed is too slow.
(d) tamper granularity very little subject to conditions, therefore coefficient of friction is small.
(e) because the frictional resistance of tamper usually pulls up groove surface drainage pile, construction quality can not be ensured.
(f) immersed tube pore-forming and weight base expanding and base expanding technique soil compaction effect are serious.
Summary of the invention
In order to solve the above technical problem, the present invention provides more than a kind of superior performance function tamper dentiform pile and its construction
Method, suitable for the soft subgrade soil pile foundation of building, structures, railway, highway build the big soft subgrade soil pile foundation of middle thickness with
And the soft subgrade soil pile foundation of all other engineerings.
Technical solution of the present invention is specific as follows:
A kind of tamper dentiform pile haveing excellent performance, including pile body, several stepped tooths are equipped at intervals on pile body, and stepped tooth is trapezoidal narrow
Tooth or trapezoidal wide tooth are alternately distributed with trapezoidal narrow tooth.
Further, as an implementation, tamper dentiform pile further includes the vertical rib set on pile body upper and lower surface, is erected
To the tooth Gao Xiangtong of rib height and stepped tooth.
Further, as an implementation, the specifically two trapezoidal wide teeth and one trapezoidal narrow of being alternately distributed
Tooth is alternately distributed.
Further, the tooth top width of trapezoidal wide tooth is 100 ~ 250mm, and the tooth top width of narrow tooth is 50 ~ 80mm.
Further, the center between stepped tooth is away from being 300 ~ 800mm.
Further, two bevel edges of stepped tooth and pile body in angle of 45 degrees, the tooth of stepped tooth a height of 50 ~ 60.Based in this way
Size, lateral pressure of the bevel edge by the soil body generate force resolution, and one is normal stress to pile body, and one is bottom bearing
Either withdrawal resistance.
It further, is R10 at the obtuse angle that trapezoidal hypotenuse and pile body are formed, two vertex of stepped tooth are R8.It is such
Size has properly handled pile body stress and has concentrated and lead to the problem of crack.
Further, drainage hole is not provided on tamper dentiform pile.Workshop Production efficiency is not only increased, is also improved simultaneously
Construction efficiency.
Further, tamper dentiform pile is mixed by centimetre stone and sand in mass ratio 6:4 or so, and the partial size of centimetre stone is 15 ~
50mm, the partial size of sand are 5mm or less.
The invention further relates to above-mentioned tamper dentiform pile construction method, first pass through long screw auger and draw with diameter overall length
Hole, then by embracing press, high pressure apparatus or vibration press piling, pile follower depth is 12 ~ 15m.
Compared with prior art, beneficial effects of the present invention are specific as follows:
(1) ultimate bearing capacity of single pile improves significant: i.e. more conventional tubular pole improves 60% or more, and more cast-in-situ concrete poured stake improves
70% ~ 90%, 35% is improved compared with the groove surface drainage pile with tamper, and reliable in quality, controllable.
(2) several stepped tooths are equipped at intervals on present invention setting pile body, stepped tooth be trapezoidal narrow tooth or trapezoidal wide tooth with
Trapezoidal narrow tooth is alternately distributed, and stepped tooth bevel edge is just generated force resolution by after the lateral pressure of the soil body, and one is to pile body
Normal stress, one is upward bottom bearing or downward withdrawal resistance, and bottom bearing or withdrawal resistance are the 10- of pile body side friction
20 times, in turn, institute's geared surface generation withdrawal resistance is significant, and the sum of the bottom bearing that institute's geared surface generates on pile body makes the tamper tooth form
The ultimate bearing capacity of single pile of stake improves significant.
(3) pile follower depth of the invention is unable to reach up to 12 ~ 15m, other any pile-type.Based on pile follower depth, this hair
It is bright can: a. strive for engineering on-stream time and greatly shorten the duration.B. usual manner is to have dug foundation pit piling again, is needed out
Working face is dug out, needs more a large amount of earthworks of excavation, the present invention is not necessarily to the above process, and then it is a large amount of to save foundation pit periphery
Earth and stone digging amount.
(4) tooth and tamper of pile-type of the invention have been transferred carries jointly along all soil layers of pile body, rather than leans on stake bottom
The bottom bearing of certain supporting course, therefore, the tamper dentiform pile for constructing of the invention, no efficiency of pile groups are also held without the concern for being pressed onto certain
Power layer, the also unnecessary influence for considering subjacent bed.
(5) when constructing, tamper is automatically with entering underground, many and diverse technique of immersed tube pore-forming without friction, not by immersed tube depth of pore forming,
The limitation of diameter, light equipment can be depressed, and not hurt strength of the mixing pile, and speed of application is fast, at low cost, reliable in quality, controllable.Together
When, construction tamper dentiform pile can optimize cap design of pile, save arrangement of reinforcement and concrete.
(6) based on structure of the invention, when construction, the super pore pressure water of generation dissipates rapidly along tamper, effect without squeezing soil
It answers.
(7) safety coefficient of the present invention can ensure that characteristic value is 2, be conducive to antidetonation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the first embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the second embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the third embodiment of the present invention；
Fig. 4 is A-A cross-sectional view in Fig. 1；
Fig. 5 is B-B cross-sectional view in Fig. 2；
Fig. 6 is C-C cross-sectional view in Fig. 3.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical solution in the present embodiment is clearly and completely described, is shown
So, described embodiment is only rather than whole example to a part of example of the present invention.Based on the implementation in the present invention
Example, those of ordinary skill in the art's every other embodiment obtained under that premise of not paying creative labor, belongs to
The scope of protection of the invention.
Embodiment 1
As shown in Figure 1, the tamper dentiform pile haveing excellent performance of the present embodiment, including pile body 1, through-hole, pile body are equipped in the middle part of pile body 1
Several stepped tooths are equipped at intervals on 1, stepped tooth includes trapezoidal wide tooth 2 and trapezoidal narrow tooth 3, and alternation method is two trapezoidal wide teeth 2
It is alternately distributed with a trapezoidal narrow tooth 3.
Tooth top width L1=100 ~ 250mm of trapezoidal wide tooth, tooth top width L2=50 ~ 80mm of narrow tooth.Between each stepped tooth
Center is away from being 300 ~ 800mm.In angle of 45 degrees, the high L3 of the tooth of stepped tooth is 50 ~ 60mm to two bevel edges and pile body of stepped tooth.Sand
Lining dentiform pile further includes the vertical rib 4 set on pile body upper and lower surface, tooth Gao Xiangtong, the A-A cross-sectional view of vertical rib height and stepped tooth
As shown in Figure 4.1 both ends of pile body to both ends stepped tooth distance L4=500mm.Tamper dentiform pile total length L=12 ~ 13m.
It is R10 at the obtuse angle that trapezoidal hypotenuse and pile body are formed, two vertex of stepped tooth are R8.It is not set on tamper dentiform pile
Set drainage hole.
The tamper dentiform pile of the present embodiment is mixed by centimetre stone with sand 6:4 in mass ratio, and the partial size of centimetre stone is 15 ~
50mm, the partial size of sand are 5mm or less.
The construction method for the above-mentioned tamper dentiform pile that the present embodiment is related to, first passes through long screw auger and draws with diameter overall length
Hole, then by embracing press piling, pile follower depth is 12 ~ 15m.
Embodiment 2
As shown in Fig. 2, the tamper dentiform pile of the present embodiment, including pile body 1, several stepped tooths, stepped tooth are equipped at intervals on pile body 1
For trapezoidal narrow tooth 3, center between each stepped tooth is away from being 300 ~ 800mm.
Tamper dentiform pile further includes the vertical rib 4 set on pile body upper and lower surface, the tooth Gao Xiangtong of vertical rib height and stepped tooth,
The high L3 of the tooth of stepped tooth is 50 ~ 60mm, and B-B cross-sectional view is as shown in Figure 5.Tooth top width L2=50 ~ 80mm of narrow tooth.The two of stepped tooth
Bevel edge and pile body are in angle of 45 degrees.1 both ends of pile body to both ends stepped tooth distance be 500mm.Tamper dentiform pile total length L=
12~13m。
It is R10 at the obtuse angle that trapezoidal hypotenuse and pile body are formed, two vertex of stepped tooth are R8.It is not set on tamper dentiform pile
Set drainage hole.
The tamper dentiform pile of the present embodiment is mixed by centimetre stone with sand 6:4 in mass ratio, and the partial size of centimetre stone is 15 ~
50mm, the partial size of sand are 5mm or less.The concrete block or discarded masonry that building waste can also be used, are crushed into a set pattern
The similar material of lattice.
The construction method for the above-mentioned tamper dentiform pile that the present embodiment is related to, first passes through long screw auger and draws with diameter overall length
Hole, then by high pressure apparatus piling, pile follower depth is 12 ~ 15m.
Embodiment 3
As shown in figure 3, the tamper dentiform pile of the present embodiment, pile body upper and lower surface is not provided with vertical rib 4, remaining and 2 phase of embodiment
Together, C-C cross-sectional view is as shown in Figure 5.
The construction method for the above-mentioned tamper dentiform pile that the present embodiment is related to, first passes through long screw auger and draws with diameter overall length
Hole, then by vibration press piling, pile follower depth is 12 ~ 15m.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of tamper dentiform pile haveing excellent performance, it is characterised in that: including pile body, several stepped tooths are equipped at intervals on pile body,
Stepped tooth is that trapezoidal narrow tooth or trapezoidal wide tooth are alternately distributed with trapezoidal narrow tooth.
2. tamper dentiform pile according to claim 1, it is characterised in that: tamper dentiform pile further includes being set to following table on pile body
The vertical rib in face, the tooth Gao Xiangtong of vertical rib height and stepped tooth.
3. tamper dentiform pile according to claim 1, it is characterised in that: described to be alternately distributed specifically two trapezoidal wide teeth
It is alternately distributed with a trapezoidal narrow tooth.
4. tamper dentiform pile described according to claim 1 ~ one of 3, it is characterised in that: the tooth top width of trapezoidal wide tooth be 100 ~
250mm, the tooth top width of narrow tooth are 50 ~ 80mm.
5. tamper dentiform pile described according to claim 1 ~ one of 3, it is characterised in that: center between stepped tooth is away from being
300~800mm。
6. tamper dentiform pile described according to claim 1 ~ one of 3, it is characterised in that: two bevel edges and pile body of stepped tooth are at 45
Spend angle, the tooth of stepped tooth a height of 50 ~ 60.
7. tamper dentiform pile described according to claim 1 ~ one of 3, it is characterised in that: the obtuse angle that trapezoidal hypotenuse and pile body are formed
Place is R10, and two vertex of stepped tooth are R8.
8. tamper dentiform pile described according to claim 1 ~ one of 3, it is characterised in that: be not provided with draining on tamper dentiform pile
Hole.
9. tamper dentiform pile described according to claim 1 ~ one of 3, it is characterised in that: tamper dentiform pile is pressed by centimetre stone with sand
Mass ratio 6:4 or so mixing, the partial size of centimetre stone are 15 ~ 50mm, and the partial size of sand is 5mm or less.
10. the construction method of the tamper dentiform pile of one of claim 1 ~ 9, it is characterised in that: first pass through the same diameter of long screw auger
Overall length pilot hole, then by embracing press, high pressure apparatus or vibration press piling, pile follower depth is 12 ~ 15m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595209.1A CN109440802A (en) | 2018-12-25 | 2018-12-25 | The tamper dentiform pile and its construction method haveing excellent performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595209.1A CN109440802A (en) | 2018-12-25 | 2018-12-25 | The tamper dentiform pile and its construction method haveing excellent performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109440802A true CN109440802A (en) | 2019-03-08 |
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ID=65535565
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811595209.1A Pending CN109440802A (en) | 2018-12-25 | 2018-12-25 | The tamper dentiform pile and its construction method haveing excellent performance |
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| CN (1) | CN109440802A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002242207A (en) * | 2001-02-22 | 2002-08-28 | Taisei Corp | Support structure of structure foundation |
| CN1793525A (en) * | 2006-01-05 | 2006-06-28 | 江苏南水土建工程公司 | Novel method for reinforcing deep soft foundition-cencrete core sand stone pile compound foundition method |
| CN102720206A (en) * | 2012-07-16 | 2012-10-10 | 南京工业大学 | Novel connection structure of prestressed concrete pile and cushion cap |
| CN202910984U (en) * | 2012-10-30 | 2013-05-01 | 郭兆泉 | Improved tooth-shaped pile mold |
| JP2013108279A (en) * | 2011-11-21 | 2013-06-06 | Inoue Shoji Kk | Foundation structure for ground installed object and installation method of foundation pile |
| CN203701136U (en) * | 2014-01-23 | 2014-07-09 | 中国化学工程第十一建设有限公司 | Embedded steel plate leveling device |
| CN104775446A (en) * | 2014-01-15 | 2015-07-15 | 广东强光海洋工程有限公司 | Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier |
| CN209703541U (en) * | 2018-12-25 | 2019-11-29 | 郭兆泉 | The tamper dentiform pile of superior performance |
-
2018
- 2018-12-25 CN CN201811595209.1A patent/CN109440802A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002242207A (en) * | 2001-02-22 | 2002-08-28 | Taisei Corp | Support structure of structure foundation |
| CN1793525A (en) * | 2006-01-05 | 2006-06-28 | 江苏南水土建工程公司 | Novel method for reinforcing deep soft foundition-cencrete core sand stone pile compound foundition method |
| JP2013108279A (en) * | 2011-11-21 | 2013-06-06 | Inoue Shoji Kk | Foundation structure for ground installed object and installation method of foundation pile |
| CN102720206A (en) * | 2012-07-16 | 2012-10-10 | 南京工业大学 | Novel connection structure of prestressed concrete pile and cushion cap |
| CN202910984U (en) * | 2012-10-30 | 2013-05-01 | 郭兆泉 | Improved tooth-shaped pile mold |
| CN104775446A (en) * | 2014-01-15 | 2015-07-15 | 广东强光海洋工程有限公司 | Cylindrical pier for fixing water structure and mounting and constructing method of cylindrical pier |
| CN203701136U (en) * | 2014-01-23 | 2014-07-09 | 中国化学工程第十一建设有限公司 | Embedded steel plate leveling device |
| CN209703541U (en) * | 2018-12-25 | 2019-11-29 | 郭兆泉 | The tamper dentiform pile of superior performance |
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