CN106906823A - A kind of drilled pile caves in and locates the processing method of active supporting - Google Patents
A kind of drilled pile caves in and locates the processing method of active supporting Download PDFInfo
- Publication number
- CN106906823A CN106906823A CN201710196082.5A CN201710196082A CN106906823A CN 106906823 A CN106906823 A CN 106906823A CN 201710196082 A CN201710196082 A CN 201710196082A CN 106906823 A CN106906823 A CN 106906823A
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- Prior art keywords
- caves
- hole
- drilled pile
- concrete
- place
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Classifications
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
-
- 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
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
Caved in the invention discloses a kind of drilled pile and locate the processing method of active supporting, comprised the following steps：First control borehole log is found out drilled pile and is caved in the approximate location at place, verifies front and rear depth of caving in, and clay is then backfilled in hole；The downcomer in hole, Underwater Concrete in pouring hole is stood when concrete strength reaches 0.3~0.4Mpa under water, and redrilling is until drilled pile pore-forming.The present invention carries out ground extruding and protects from compacted property using Underwater Concrete to the body that caves in, and the supporting role of concrete is formed at the body that caved in device to hole, and greatly speeding up the processing speed that drilled pile caves in, and concrete guard ring can be formed in hole prevents hole phenomenon of collapsing again.
Description
Technical field
The present invention relates to Construction technology of bored pile field, and in particular to a kind of drilled pile caves in and locates the treatment of active supporting
Method.
Background technology
In drilled pile construction, the hole that collapses is easily caused when running into the Unfavorable geology such as bad situation such as quicksand, mud, weak soil.Collapse
Kong Youqi certainty, while having contingency again, therefore cannot thoroughly prevent.After drilled pile collapses hole, typically using passive type
Supporting measure, such as backfill clay or slabstone, then by backfilling material at the external force repeatedly compacted body that caves in, form the supporting of stabilization,
Then again by the region that caves in.Traditional processing scheme has three kinds.First, when hole position of collapsing is in adjacent ground surface, backfill can be taken
Hole stake, is processed or earth's surface is changed and is filled to below the body that collapses using deep casing through body is caved in, and is processed by improveing the soil body；Second,
When the body that collapses is deeper from earth's surface, excavation change fill out difficulty it is larger when, first using clay or slabstone backfill hole stake, then applied on hole periphery again
Beat below steel sheet pile enclosure, and steel sheet pile palpus injection to the body that caves in；3rd, when the body that collapses is deeper using backfill clay or slabstone,
Hole stake stands a period of time, one month or half a year, treats to apply brill again again after inner hole deposition shallow lake is closely knit, is bored in drilling process
Head backfills pellet in need to repeatedly grinding and extruding the region that caves in, with retaining wall in the hole for forming densification.Above-mentioned processing method is both needed to lead to
Cross external force come the compacted body region soil body that caves in, be passive type supporting, it is time-consuming, generally, must complete opening backfill, and place
Reason effect is general, when brill is applied again, cannot still avoid the occurrence of having in hole caving on a small scale.
The content of the invention
Caved in the invention provides a kind of drilled pile and locate the processing method of active supporting, it can greatly speed up drilled pile and collapse
The processing speed collapsed, and concrete guard ring can be formed in hole and prevent hole phenomenon of collapsing again.
To achieve the above object, the technical scheme is that：
A kind of drilled pile caves in and locates the processing method of active supporting, comprises the following steps：
（1）First control borehole log is found out drilled pile and is caved in the approximate location at place, front and rear depth of caving in is verified, then in hole
Below backfill clay to the place that caves at 1.2 ~ 0.5m；
（2）The downcomer in hole, stands to concrete strength under water and reaches above Underwater Concrete to the place that caves in pouring hole at 1.8 ~ 3m
During 0.3~0.4Mpa, redrilling is until drilled pile pore-forming.
The step（1）In, at clay backfilling to the place lower section 1m that caves in.
The step（2）In, the downcomer in hole, in pouring hole above Underwater Concrete to the place that caves at 2m.
The step（1）In, to reduce the outer debit amount of backfill clay, mixing portion drilling waste is gone back during backfill clay.
Above-described drilled pile is caved in and locates the processing method of active supporting, and first using clay backfilling, filling is not caved in
Bottom pile body, after backfill without compacting, then directly Underwater Concrete is backfilled again, using Underwater Concrete from compacted performance and its intensity energy
The characteristic of self-propagation under water, concrete can also further clamp-on hole Zhuan Tan chambers, apply again after brill collapse chamber and hole wall formed compared with
It is the concrete guard ring of stabilization, i.e., the reinforcement at the place that caved in drilled pile is actively completed by Underwater Concrete, the concrete guard ring possesses one
Fixed intensity can be prevented from effectively collapsing again the generation of hole phenomenon, and the present invention has advantages below：
（1）The present invention program is simple, easy to operate, low-cost, reduces the cost of construction；
（2）The present invention carries out ground extruding and protects from compacted property using Underwater Concrete to the body that caves in；Using the soil body compression only with
The related performance of additional stress, the only certain thickness top layer of the backfill soil body carries out percussive pressure in device to hole during concrete placings under water
It is real, so as to form the supporting role of concrete at the body that caved in device to hole.
（3）The present invention makes full use of tau-effect, both make use of the performance of concrete strength self-propagation under water, gives full play to again
The fast pore-creating function of drilling tool, when concrete strength reaches 0.3~0.4MPa under water, you can restart bore operation, can be when shorter
Interior to complete the treatment work caved in of drilled pile, the time for the treatment of is generally one day, accelerates pile foundation and collapses the treatment speed in hole
Degree, improves efficiency of construction, and due to having concrete guard ring to protect at the place that caves in, substantially increase the construction matter of pile foundation boring stake
Amount.
Brief description of the drawings
Fig. 1 is that drilled pile caves in facade structures schematic diagram；
Fig. 2 is drilled pile collapse back-fill facade structures schematic diagram；
Label in figure：1 drilled pile；2 cave in place；3 clays；4 Underwater Concretes.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention be not limited to it is following
Embodiment.
Embodiment 1
（1）First control borehole log is found out drilled pile 1 and is caved in the approximate location at place 2, verifies front and rear depth of caving in, and is collapsed when verifying
When the depth collapsed reaches more than 8m, at 1m below backfill clay 3 to the place that caves in hole；
（2）The downcomer in hole, in pouring hole Underwater Concrete 4 to the place top 2m places that cave in, standing to Underwater Concrete 4 reaches 0.3~
During 0.4MPa, redrilling is until drilled pile pore-forming.
Embodiment 2
（1）First control borehole log is found out drilled pile 1 and is caved in the approximate location at place 2, verifies front and rear depth of caving in, and is collapsed when verifying
When the depth collapsed reaches more than 5m, backfill in the hole below clay 3 and drilling waste to the place that caves at 1.2m；
（2）The downcomer in hole, in pouring hole Underwater Concrete 4 to the place top 3m places that cave in, standing to Underwater Concrete 4 reaches 0.3~
During 0.4MPa, redrilling is until drilled pile pore-forming.
Embodiment 3
（1）First control borehole log is found out drilled pile 1 and is caved in the approximate location at place 2, verifies front and rear depth of caving in, and is collapsed when verifying
When the depth collapsed reaches more than 10m, at 0.5m below backfill clay 3 to the place that caves in hole；
（2）The downcomer in hole, in pouring hole Underwater Concrete 4 to the place top 1.8m places that cave in, standing to Underwater Concrete 4 reaches 0.3~
During 0.4MPa, redrilling is until drilled pile pore-forming.
Claims (4)
1. a kind of drilled pile caves in and locates the processing method of active supporting, it is characterised in that comprise the following steps：
（1）First control borehole log is found out drilled pile and is caved in the approximate location at place, front and rear depth of caving in is verified, then in hole
Below backfill clay to the place that caves at 1.2 ~ 0.5m；
（2）The downcomer in hole, stands to concrete strength under water and reaches above Underwater Concrete to the place that caves in pouring hole at 1.8 ~ 3m
During 0.3~0.4Mpa, redrilling is until drilled pile pore-forming.
2. drilled pile according to claim 1 caves in and locates the processing method of active supporting, it is characterised in that：
The step（1）In, at clay backfilling to the place lower section 1m that caves in.
3. drilled pile according to claim 1 caves in and locates the processing method of active supporting, it is characterised in that：
The step（2）In, the downcomer in hole, in pouring hole above Underwater Concrete to the place that caves at 2m.
4. drilled pile according to claim 1 caves in and locates the processing method of active supporting, it is characterised in that：
The step（1）In, mixing portion drilling waste is gone back during backfill clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196082.5A CN106906823A (en) | 2017-03-29 | 2017-03-29 | A kind of drilled pile caves in and locates the processing method of active supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710196082.5A CN106906823A (en) | 2017-03-29 | 2017-03-29 | A kind of drilled pile caves in and locates the processing method of active supporting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106906823A true CN106906823A (en) | 2017-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710196082.5A Pending CN106906823A (en) | 2017-03-29 | 2017-03-29 | A kind of drilled pile caves in and locates the processing method of active supporting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106906823A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962507A (en) * | 2020-08-20 | 2020-11-20 | 中交一公局集团有限公司 | Pile foundation hole forming method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200895A (en) * | 2007-12-05 | 2008-06-18 | 三峡大学 | Method for repairing damage of underwater concrete panel slope protection |
| CN205475205U (en) * | 2016-03-01 | 2016-08-17 | 中国建筑第八工程局有限公司 | Dig bored concrete pile soon and meet hole backfill device that collapses |
-
2017
- 2017-03-29 CN CN201710196082.5A patent/CN106906823A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101200895A (en) * | 2007-12-05 | 2008-06-18 | 三峡大学 | Method for repairing damage of underwater concrete panel slope protection |
| CN205475205U (en) * | 2016-03-01 | 2016-08-17 | 中国建筑第八工程局有限公司 | Dig bored concrete pile soon and meet hole backfill device that collapses |
Non-Patent Citations (1)
| Title |
|---|
| 石春莉: "水工建设中混凝土防渗墙施工技术分析", 《科技创新与应用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111962507A (en) * | 2020-08-20 | 2020-11-20 | 中交一公局集团有限公司 | Pile foundation hole forming method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170630 |
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| RJ01 | Rejection of invention patent application after publication |