CN102235152A - Hole-forming construction method for bored pile on high-strength stabilized soil layer - Google Patents
Hole-forming construction method for bored pile on high-strength stabilized soil layer Download PDFInfo
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- CN102235152A CN102235152A CN 201010153611 CN201010153611A CN102235152A CN 102235152 A CN102235152 A CN 102235152A CN 201010153611 CN201010153611 CN 201010153611 CN 201010153611 A CN201010153611 A CN 201010153611A CN 102235152 A CN102235152 A CN 102235152A
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Abstract
The invention discloses a hole-forming construction method for a bored pile on a high-strength stabilized soil layer, comprising the following steps of: determining a pile foundation position to be constructed on the construction ground; drilling into the high-strength stabilized soil layer at the pile foundation position by using a rotary drilling rig to form a pile hole; and drilling into a soft soil layer at the pile hole position by using a bored pile rack to form a hole. In the construction method, the holes are formed on the soil layers with higher strength by using the rotary drilling rig and another holes are formed in the soft soil layer by using a GPS (Global Position System) bored pile rack drill bit. By using the hole forming construction method, the holes can be formed in the soil layers with higher strength, the hole-forming quality can be ensured, the damage to the drill bit of the bored pile is avoided and the engineering quality and the construction efficiency are improved.
Description
Technical field
The present invention relates to the engineering construction technical field of construction, and be particularly related to a kind of high strength reinforcement soil layer drilling pouring pile hole job practices.
Background technology
Castinplace pile is meant at engineering site and forms the stake hole by means such as machine drilling, steel pipe soil compaction or manpower excavations in foundation soil, and place reinforcing cage, concrete perfusion within it and the stake of making, according to the hole forming method difference, castinplace pile can be divided into several classes such as tube-sinking cast-in-situ pile, bored pile and digging hole filling pile again.
Bored pile is a kind of type of definition by the piling method classification.Along with industrial expansion and Increase of population, highrise building constantly increases, because the foundation condition in a lot of areas is poor, can not directly bear the pressure that transmits by highrise building, exist the clay layer of very big weak soil of thickness or moderate strength below the face of land, build highrise building as still continuing to use general at that time friction pile, certainly lead to very big sedimentation.So engineers has been used for reference and has been dug well technological invention build the bored pile that steel concrete forms in manually digging hole.Along with the development with rapid changepl. never-ending changes and improvements of science and technology, bored pile is widely used in high level, high-rise building and heavy structure.
Nowadays building generally can adopt bored pile vertically to carry as pile foundation at the soft foundation layer, drilling pouring pile hole is then with utilization direct circulation of GPS pile frame or reverse circulating construction technology drilling and forming hole, and this traditional construction technology is applicable to soft foundation, run into the soil body behind high volume cement stabilization, because soil mass consolidation intensity is higher, the drill bit of bored pile just is difficult to drill this layer soil mass consolidation, if boring by force, can cause speed of fulfiling hole to slow down, become hole perpendicularity not guarantee, even can make the drill bit damage.To this special circumstances, the traditional drilling construction technology of this kind just can not be suitable for.
Summary of the invention
The present invention is intended to solve in the prior art, in bored pile construction, owing to adopt traditional construction technology can't be the constructing of higher-strength soil mass consolidation, and then cause hole quality not high, technical problems such as drill bit failure.
In view of this, the invention provides a kind of high strength reinforcement soil layer drilling pouring pile hole job practices, it is characterized in that, may further comprise the steps:
Measure the pile foundation position that needs construction on construction ground;
Utilize rotary drilling rig in the high strength reinforcement soil body, to creep into and form the stake hole in the pile foundation position;
Utilize bored pile pile frame drilling and forming hole in the weak soil layer in described stake hole site.
Further, described rotary drilling rig vertically passes through the described high strength reinforcement soil body.
Further, the diameter of described rotary drilling rig is identical with the diameter of bored pile.
Further, described rotary drilling rig is the crawler-type traveling mode.
Further, described rotary drilling rig adopts high-strength drill pipe to drive the hydraulic pressure unit head that circles round.
Further, the technology of carrying out pore-forming in described weak soil layer is direct circulation or reverse circulating construction technology.
In sum, high strength reinforcement soil layer drilling pouring pile hole job practices provided by the invention is applicable to the construction technology of pile foundation pore-forming in the high strength soil body behind cement stabilization, has the following advantages:
1, rotary drilling rig is owing to adopt the walking manner of crawler belt, the walking manner of the GPS bored pile pile frame towline of comparing traction, and it is quicker take action, and mobile more convenient, efficient is higher.
2, the stratum of many different soil conditions such as the applicable weak soil of the drill bit that circles round of the high moment of torsion of rotary drilling rig, sandy soil, gravel, be specially adapted in the higher soil layer of intensity, hole, on the speed of pore-forming, guarantee on the hole perpendicularity better than conventional drilling pouring pile hole technology, and reinforce after soil layer removes rotary drilling rig passing through, can bring into play GPS bored pile pile frame drill bit pore-forming advantage of mud off simultaneously in the middle of weak soil again.
Description of drawings
Figure 1 shows that the flow chart of the high strength reinforcement soil layer drilling pouring pile hole job practices that one embodiment of the invention provides;
Fig. 2 A to Fig. 2 E is depicted as the high strength reinforcement soil layer drilling pouring pile hole construction sequence schematic diagram that one embodiment of the invention provides.
The specific embodiment
For technical characterictic of the present invention is become apparent, below in conjunction with accompanying drawing, provide specific embodiment, the present invention will be further described.
See also Fig. 1, it is depicted as the flow chart of the high strength reinforcement soil layer drilling pouring pile hole job practices that one embodiment of the invention provides.
This job practices may further comprise the steps:
S10 measure to need the pile foundation position of construction on construction ground, wherein this construction ground have the higher soil layer of intensity with;
S20 utilizes rotary drilling rig to creep in the high strength reinforcement soil body in the pile foundation position and forms the stake hole;
In embodiments of the present invention, described rotary drilling rig vertically passes through the described high strength reinforcement soil body.
In embodiments of the present invention, the diameter of described rotary drilling rig is identical with the diameter of bored pile.
In embodiments of the present invention, described rotary drilling rig is the crawler-type traveling mode, and it is advanced conveniently, and is quick for installation.
In embodiments of the present invention, described rotary drilling rig adopts high-strength drill pipe to drive the hydraulic pressure unit head that circles round.
S30 utilizes bored pile pile frame drilling and forming hole in the weak soil layer in described stake hole site.
In embodiments of the present invention, the technology of carrying out pore-forming in described weak soil layer is direct circulation or reverse circulating construction technology.
In embodiments of the present invention, its job practices is exactly to adopt the rotary drilling rig identical with the bored pile diameter, utilize its all-hydraulic power head, drive hydraulic pressure unit head that circles round by its high-strength drill pipe, the abrasion drill soil of keeping forging ahead in the middle of the higher soil mass consolidation of intensity, form the stake hole, thereby solved bored pile and crept into problem of difficult at the higher compacted soil of intensity, after the drill bit that circles round drills the reinforcing soil layer, in former one-tenth hole site, the traditional drilling and forming hole technology drilling and forming hole in the middle of weak soil of available pile frame utilization.
The high strength reinforcement soil layer drilling pouring pile hole job practices of utilizing the embodiment of the invention to provide is to utilize rotary drilling rig pore-forming in the higher soil layer of intensity earlier, utilizes GPS bored pile pile frame drill bit pore-forming in the middle of the weak soil layer again.Can be in the higher soil layer of intensity pore-forming and guaranteed the quality of pore-forming, avoided the damage of the drill bit of bored pile, improved the quality of engineering and the efficient of construction.
In order more clearly to explain the present invention, be illustrated below in conjunction with concrete construction sequence.
Please in conjunction with referring to Fig. 2 A to Fig. 2 E.
At first, determine the pile foundation position 4 that needs construction on building hard place level ground face 3, the long scope of this stake has high strength cement to reinforce soil layer 1 and former weak soil soil layer 2 from top to bottom, shown in Fig. 2 A.
Secondly, the rig 5 that circles round needs the pile foundation position 4 of construction in place, ready from walking on building hard place level ground face 3, shown in Fig. 2 B.
Once more, the drill bit that circles round of the rig 5 that circles round is being specified pile foundation position 4 vertical drilling and forming holes 6, and the rig 5 that circles round whenever creeps into once, and the compacted soil 7 that takes out is deposited on the limit, passes through whole reinforcing soil layer 1 until boring, shown in Fig. 2 C.
Then, after cement stabilization soil layer 1 is finished pore-forming 6, remove the rig 5 that circles round, 8 telephone-moving of bored pile pile frame are in place, formed 6 places, hole drilling and forming hole 9 in weak soil soil layer 2 more at the rig 5 that circles round, shown in Fig. 2 D.
At last, this stake is finished in construction, shown in Fig. 2 E.In this step, utilize GPS bored pile pile frame, adopt direct circulation or reverse circulating construction technology, both can bring into play the advantage of GPS bored pile pile frame drill bit pore-forming while mud off in the middle of weak soil.
In sum, the high strength reinforcement soil layer drilling pouring pile hole job practices that the embodiment of the invention provides is to utilize rotary drilling rig pore-forming in the higher soil layer of intensity earlier, utilize GPS bored pile pile frame drill bit pore-forming in the middle of weak soil again, have following useful technique effect compared to prior art:.
1, the stratum of many different soil conditions such as the applicable weak soil of the drill bit that circles round of the high moment of torsion of rotary drilling rig, sandy soil, gravel, be specially adapted in the higher soil layer of intensity, hole, on the speed of pore-forming, guarantee on the hole perpendicularity better than conventional drilling pouring pile hole technology, and reinforce after soil layer removes rotary drilling rig passing through, can bring into play GPS bored pile pile frame drill bit pore-forming advantage of mud off simultaneously in the middle of weak soil again.
2, rotary drilling rig is owing to adopt the walking manner of crawler belt, the walking manner of the GPS bored pile pile frame towline of comparing traction, and it is quicker take action, and mobile more convenient, efficient is higher.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; have in the technical field under any and know the knowledgeable usually; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (6)
1. a high strength reinforcement soil layer drilling pouring pile hole job practices is characterized in that, may further comprise the steps:
Measure the pile foundation position that needs construction on construction ground;
Utilize rotary drilling rig in the high strength reinforcement soil body, to creep into and form the stake hole in the pile foundation position;
Utilize bored pile pile frame drilling and forming hole in the weak soil layer in described stake hole site.
2. high strength reinforcement soil layer drilling pouring pile hole job practices according to claim 1 is characterized in that described rotary drilling rig vertically passes through the described high strength reinforcement soil body.
3. high strength reinforcement soil layer drilling pouring pile hole job practices according to claim 1 is characterized in that the diameter of described rotary drilling rig is identical with the diameter of bored pile.
4. high strength reinforcement soil layer drilling pouring pile hole job practices according to claim 1 is characterized in that described rotary drilling rig is the crawler-type traveling mode.
5. high strength reinforcement soil layer drilling pouring pile hole job practices according to claim 1 is characterized in that, described rotary drilling rig adopts high-strength drill pipe to drive the hydraulic pressure unit head that circles round.
6. high strength reinforcement soil layer drilling pouring pile hole job practices according to claim 1 is characterized in that the technology of carrying out pore-forming in described weak soil layer is direct circulation or reverse circulating construction technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153611 CN102235152A (en) | 2010-04-22 | 2010-04-22 | Hole-forming construction method for bored pile on high-strength stabilized soil layer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010153611 CN102235152A (en) | 2010-04-22 | 2010-04-22 | Hole-forming construction method for bored pile on high-strength stabilized soil layer |
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| CN102235152A true CN102235152A (en) | 2011-11-09 |
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| CN 201010153611 Pending CN102235152A (en) | 2010-04-22 | 2010-04-22 | Hole-forming construction method for bored pile on high-strength stabilized soil layer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644274A (en) * | 2012-04-17 | 2012-08-22 | 中铁隧道集团三处有限公司 | Pile-forming construction method for penetrating through existing structure by fender post |
| CN102704467A (en) * | 2012-05-25 | 2012-10-03 | 重庆中设工程设计股份有限公司 | Method for forming hole in elastic clay layer by rotary drilling |
| CN102758430A (en) * | 2012-07-31 | 2012-10-31 | 中建五局第三建设有限公司 | Large-diameter rotary digging pile construction process for ultra-deep throwing and filling unconsolidated soil body |
| CN107165581A (en) * | 2017-06-09 | 2017-09-15 | 上海建工二建集团有限公司 | A kind of GPS drill bit of drilling machine and GPS rig pile foundation drilling construction method |
| CN109137957A (en) * | 2018-09-19 | 2019-01-04 | 上海市机械施工集团有限公司 | A kind of pile base construction method |
| CN109695431A (en) * | 2018-12-13 | 2019-04-30 | 台州职业技术学院 | A kind of tool for salvaging drilling pile drill |
-
2010
- 2010-04-22 CN CN 201010153611 patent/CN102235152A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644274A (en) * | 2012-04-17 | 2012-08-22 | 中铁隧道集团三处有限公司 | Pile-forming construction method for penetrating through existing structure by fender post |
| CN102704467A (en) * | 2012-05-25 | 2012-10-03 | 重庆中设工程设计股份有限公司 | Method for forming hole in elastic clay layer by rotary drilling |
| CN102704467B (en) * | 2012-05-25 | 2015-04-22 | 重庆中设工程设计股份有限公司 | Method for forming hole in elastic clay layer by rotary drilling |
| CN102758430A (en) * | 2012-07-31 | 2012-10-31 | 中建五局第三建设有限公司 | Large-diameter rotary digging pile construction process for ultra-deep throwing and filling unconsolidated soil body |
| CN102758430B (en) * | 2012-07-31 | 2014-07-23 | 中建五局第三建设有限公司 | Large-diameter rotary digging pile construction process for ultra-deep throwing and filling unconsolidated soil body |
| CN107165581A (en) * | 2017-06-09 | 2017-09-15 | 上海建工二建集团有限公司 | A kind of GPS drill bit of drilling machine and GPS rig pile foundation drilling construction method |
| CN109137957A (en) * | 2018-09-19 | 2019-01-04 | 上海市机械施工集团有限公司 | A kind of pile base construction method |
| CN109695431A (en) * | 2018-12-13 | 2019-04-30 | 台州职业技术学院 | A kind of tool for salvaging drilling pile drill |
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Application publication date: 20111109 |