CN203654272U - Lateral friction boring filling pile for isolation pile - Google Patents
Lateral friction boring filling pile for isolation pile Download PDFInfo
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- CN203654272U CN203654272U CN201320883959.5U CN201320883959U CN203654272U CN 203654272 U CN203654272 U CN 203654272U CN 201320883959 U CN201320883959 U CN 201320883959U CN 203654272 U CN203654272 U CN 203654272U
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- pile
- steel casing
- stirrup
- internal layer
- filling pile
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- 238000002955 isolation Methods 0.000 title claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000004576 sand Substances 0.000 claims description 8
- 238000010276 construction Methods 0.000 abstract description 8
- 230000001681 protective effect Effects 0.000 abstract 4
- 239000002689 soil Substances 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a lateral friction boring filling pile for an isolation pile. The lateral friction boring filling pile comprises a vertical steel bar, a stirrup and a boring filling pile body for a reinforced stirrup, wherein the vertical steel bar is positioned between the stirrup and the reinforced stirrup, the outer wall of the boring filling pile is provided with an internal steel protective cylinder, of which the external surface is sleeved by an external steel protective cylinder, and fine sands are arranged between the internal steel protective cylinder and the external steel protective cylinder. The lateral friction boring filling pile makes the engineering construction along the subway area possible, and improves the land utilization rate. The convenience of subway traffic is maximized.
Description
Technical field
The utility model relates to civil works field, is specially a kind of isolation pile side friction bored pile.
Background technology
In order to ensure the normal operation of built subway line, should close in subway tunnel both sides newly-built other object of construction production of the strict restriction of scope.But the convenience of subway transportation makes subway land used along the line well sold and in short supply, building exploration project is often close to subway sectional tunnel, if these projects adopt conventional stake type, pile foundation side friction can reach subway tunnel by the soil body, thereby cause subway tunnel to sink to being out of shape and cracking infiltration, can directly affect like this structural safety of running tunnel, bring serious potential safety hazard.In ordinary pile foundation work progress, boring extracting soil or Extruded By Soil Precast Piles all may cause subway tunnel stress to change, and have larger risk.At present, domestic on subway is separated by very near place along the line, to build construction work example few, and domestic still formulation so far built the concrete control criterion of construction work near subway.Along with the development of urban construction, more and more building projects need to be close to existing subway tunnel to carry out, and these projects often adopt conventional stake type, are difficult to eliminate the adverse effect to existing engineering foundation.
Utility model content
The purpose of this utility model is to provide a kind of isolation pile side friction bored pile in order to overcome above-mentioned deficiency.
The utility model comprises the bored pile body that is provided with longitudinal reinforcement, stirrup and the stirrup of putting more energy into, described longitudinal reinforcement is at stirrup and put more energy between stirrup, described bored pile outer wall is provided with internal layer steel casing, the external surface of described internal layer steel casing is arranged with outer steel casing, between described internal layer steel casing and outer steel casing, is provided with fine sand.
Further, also comprise concrete bearing platform, the top of described longitudinal reinforcement and internal layer steel casing is positioned at concrete bearing platform.
Between described concrete bearing platform and fine sand, be provided with concrete cushion.
The utlity model has following advantage:
1. adopt clad steel sleeve pipe, boring is carried out in steel bushing, and steel bushing plays retaining wall effect to boring, has born the soil body compressive stress in stake pore forming process, has isolated the impact of rig vibration on the soil body simultaneously, has then reduced the disturbance near soil body tunnel.
2. between two-layer steel sleeve, fill fine sand, outer steel sleeve does not contact with cushion cap and post, and pile foundation frictional resistance just can not be delivered near soil body tunnel yet, thereby has isolated the impact of Side Friction of Bored Pile on tunnel.
3. the utility model makes to carry out engineering construction at subway area along the line becomes possibility, has improved land utilization ratio, can give full play to greatest extent the convenience of subway transportation.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is A-A sectional view in Fig. 1.
Detailed description of the invention
Further illustrate the utility model below in conjunction with drawings and Examples.
Embodiment: the utility model comprises the bored pile body 3 that is provided with longitudinal reinforcement 31, stirrup 32 and the stirrup 33 of putting more energy into, described longitudinal reinforcement 31 is at stirrup 32 and put more energy between stirrup 33, described bored pile 3 outer walls are provided with internal layer steel casing 2, the external surface of described internal layer steel casing 2 is arranged with outer steel casing 1, between described internal layer steel casing 2 and outer steel casing 1, is provided with fine sand 5.The utility model also comprises concrete bearing platform 4, and the top of described longitudinal reinforcement 31 and internal layer steel casing 2 is positioned at concrete bearing platform 4, between described concrete bearing platform 4 and fine sand 5, is provided with concrete cushion 6, and bored pile diameter need to be determined according to engineering calculation; Outer steel casing 1 diameter is greater than internal layer steel casing 2 diameter 150mm, to meet minimum clear distance 50mm between inside and outside steel casing wall; Outer steel casing 1 and internal layer steel casing 2 wall thickness are 12-14mm.
Before construction, should strengthen the foundation deformation monitoring to existing engineering within the scope of place, and formulate corresponding emergency preplan.First sliding agent is smeared in the inside and outside surface of outer steel casing 1, behind engineering ground location static pressure or squeeze into foundation soil in approximately 2～3 meters, drill bit follow-up is afterwards revolved and is taken soil, and then the outer steel bushing 1 that sinks, follow-up is revolved and is taken soil again, so circulation down, remains while fetching earth that the interior residue soil thickness of outer steel casing 1 is about 0.5 meter, until outer steel casing 1 is depressed into certain depth under existing engineering foundation.Then internal layer steel casing 2 external surfaces are coated with to sliding agents, put into outer steel casing 1, and during static pressure buries, dark 1 meter than 1 end of outer steel casing, 2 ends of internal layer steel casing,, internal layer steel casing 2 tops are pushed up and flushed with bored pile, all stretch in cushion cap and bed course.Outer steel casing 1 top is than the approximately low 250～350mm in internal layer steel casing 2 tops, and should not stretch in cushion cap and bed course, apart from about 100mm at the bottom of bed course.To between outer steel casing 1 and internal layer steel casing 2, fill fine sand 5.Continue to fetch earth with revolving to dig to be drilled in internal layer steel casing 2, can directly hole to pile-base supporting layer, complete internal layer steel casing 2 stake holes, bottom.Finally transfer reinforcing cage, and fluid concrete, pile foundation construction completed.
Above-described embodiment is preferably embodiment of the utility model; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (3)
1. an isolation pile side friction bored pile, comprise the bored pile body (3) that is provided with longitudinal reinforcement (31), stirrup (32) and the stirrup of putting more energy into (33), described longitudinal reinforcement (31) is positioned between stirrup (32) and the stirrup of putting more energy into (33), it is characterized in that: described bored pile (3) outer wall is provided with internal layer steel casing (2), the external surface of described internal layer steel casing (2) is arranged with outer steel casing (1), between described internal layer steel casing (2) and outer steel casing (1), is provided with fine sand (5).
2. isolation pile side friction bored pile according to claim 1, characterized by further comprising concrete bearing platform (4), and the top of described longitudinal reinforcement (31) and internal layer steel casing (2) is positioned at concrete bearing platform (4).
3. isolation pile side friction bored pile according to claim 2, is characterized in that being provided with concrete cushion (6) between described concrete bearing platform (4) and fine sand (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320883959.5U CN203654272U (en) | 2013-12-30 | 2013-12-30 | Lateral friction boring filling pile for isolation pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320883959.5U CN203654272U (en) | 2013-12-30 | 2013-12-30 | Lateral friction boring filling pile for isolation pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203654272U true CN203654272U (en) | 2014-06-18 |
Family
ID=50920679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320883959.5U Expired - Lifetime CN203654272U (en) | 2013-12-30 | 2013-12-30 | Lateral friction boring filling pile for isolation pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203654272U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002890A (en) * | 2015-07-15 | 2015-10-28 | 杭州江润科技有限公司 | Abyssal region cast-in-situ bored pile nondestructive assembly and disassembly double-layer steel casing group structure and construction method |
| CN105507317A (en) * | 2016-01-08 | 2016-04-20 | 中国中铁航空港建设集团有限公司 | Coated single-layer steel casing capable of reducing lateral frictional resistance |
| CN107268610A (en) * | 2017-06-19 | 2017-10-20 | 中铁大桥局第七工程有限公司 | A kind of local antifriction resistance piling strtucture and its construction method |
| CN108179757A (en) * | 2018-01-31 | 2018-06-19 | 武汉市市政建设集团有限公司 | The pile foundation structure and construction method of high gradient slope containing study on weak faults |
| CN109457697A (en) * | 2018-12-21 | 2019-03-12 | 兰州有色冶金设计研究院有限公司 | Eliminate the bored concrete pile of breathing soil layer frictional force |
-
2013
- 2013-12-30 CN CN201320883959.5U patent/CN203654272U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002890A (en) * | 2015-07-15 | 2015-10-28 | 杭州江润科技有限公司 | Abyssal region cast-in-situ bored pile nondestructive assembly and disassembly double-layer steel casing group structure and construction method |
| CN105002890B (en) * | 2015-07-15 | 2017-03-08 | 杭州江润科技有限公司 | A kind of profundal zone cast-in-situ bored pile is lossless to assemble and disassemble double-deck steel pile casting group structure and construction method |
| CN105507317A (en) * | 2016-01-08 | 2016-04-20 | 中国中铁航空港建设集团有限公司 | Coated single-layer steel casing capable of reducing lateral frictional resistance |
| CN107268610A (en) * | 2017-06-19 | 2017-10-20 | 中铁大桥局第七工程有限公司 | A kind of local antifriction resistance piling strtucture and its construction method |
| CN108179757A (en) * | 2018-01-31 | 2018-06-19 | 武汉市市政建设集团有限公司 | The pile foundation structure and construction method of high gradient slope containing study on weak faults |
| CN109457697A (en) * | 2018-12-21 | 2019-03-12 | 兰州有色冶金设计研究院有限公司 | Eliminate the bored concrete pile of breathing soil layer frictional force |
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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: 20140618 |
|
| CX01 | Expiry of patent term |