CN1472397A - Constructing technology for pile core - Google Patents
Constructing technology for pile core Download PDFInfo
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- CN1472397A CN1472397A CNA031300197A CN03130019A CN1472397A CN 1472397 A CN1472397 A CN 1472397A CN A031300197 A CNA031300197 A CN A031300197A CN 03130019 A CN03130019 A CN 03130019A CN 1472397 A CN1472397 A CN 1472397A
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- stake
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- Piles And Underground Anchors (AREA)
Abstract
A hole-forming method for pile foundation features that a dedicated rotating drill bit is used to squeeze the soil at pile position to form pile hole. Its advantages are high speed, no noise and pollution, and low cost.
Description
Affiliated technical field
The present invention relates to the building foundation engineering field, especially the pore-forming technique of stake types such as cast-in-place concrete pile, lime soil pile, broken stone pile, CFG stake.
Background technology
In construction foundation working, adopt various pileworks in a large number, in the construction of various stakes, the pore forming process of stake is an important link.It is several that traditional hole forming method has mud off to be drilled to hole, long spiral dry pore-forming, Henan luoyang spade pore-forming, hammering pore-forming, rotary drilling rig pore-forming etc.Wherein the noise of hammering pore-forming and vibration are too big, are unsuitable near the construction residential block, and other hole forming method produces a lot of mud and assorted native contaminated environment, and can not reinforce former ground.In addition, the static pressed pile of rising has now overcome with above-mentioned shortcoming, but has limited its development because of its cost of equipment costliness.
Summary of the invention
The purpose of this invention is to provide that a kind of speed of application is fast, noiseless, pollution-free, cost is low and the job practices that can reinforce former ground again.
The objective of the invention is to realize that by following job practices its step comprises:
A) mobile pile-forming machine perching makes drill bit stake position.
B) adjusting the stake machine makes target drill vertical with ground.
C) target drill is placed on naturally place, stake position, start rig and make the target drill rotation, target drill is under the pressure of deadweight, must creep into downwards by rotation, when preceding two flights of target drill pierce ground as traditional long screw auger, earth between helical blade can upwards slide with respect to helical blade, and when continuing to bore downwards, upwards the earth that slides is subjected to the extruding of the drilling rod that radially strengthens gradually the helical blade bottom from bottom to top and clamp-ons in the stake earth in week again.
D) after helical blade is cut earth fully, continue rotation, whole special-purpose drilling rod will be drawn in the soil by drill bit.
E) wait to get into projected depth after, mention special-purpose drilling rod, finish the work of boring.
Purpose of the present invention can also be implemented by following second method, the steps include:
A) mobile pile-forming machine perching makes drill bit stake position.
B) adjusting the stake machine makes target drill vertical with ground.
C) target drill is placed on naturally place, stake position, start rig and make the target drill rotation, target drill is under the pressure of deadweight, must creep into downwards by rotation, when preceding two flights of target drill pierce ground as traditional long screw auger, earth between helical blade can upwards slide with respect to helical blade, and when continuing to bore downwards, upwards the earth that slides is subjected to the extruding of the drilling rod that radially strengthens gradually the helical blade bottom from bottom to top and clamp-ons in the stake earth in week again.
D) after helical blade is cut earth fully, continue the special-purpose drilling rod of rotation, simultaneously with hydraulic cylinder or assembly pulley to pressing down target drill.
E) wait to get into projected depth after, mention special-purpose drilling rod, finish the work of boring.
Because second method adds hydraulic cylinder or assembly pulley to pressing down drill bit, so its scope of application has strengthened, it can get out the stake hole that diameter is bigger, the degree of depth is darker.
For the stake with above-mentioned two kinds of method pore-formings, its advantage is: whole work continuity is strong, and speed of application is fast; Because pile peripheral earth has been reinforced in compacted effect, the bearing capacity of stake is increased substantially; The pollution of construction civilization, noiselessness and mud; Be particularly suitable for the construction that project is made in the old housing reform of residential block.
In above-mentioned two kinds of methods, the spacing of adjacent studs is to determine according to the spacing of tube-sinking cast-in-situ pile.
In above-mentioned two kinds of methods, before construction, can ram closely knit processing to the top layer soil body at place, stake position, adopt this method can also allow topsoil that stake is produced effect of contraction.
In above-mentioned two kinds of methods, after the stake hole formed, the area of undergauge more than groundwater table and not can directly be carried brill, puts reinforcing cage, concrete perfusion forms reinforced concrete pile.
In above-mentioned two kinds of methods, after the stake hole forms, below groundwater table or the area of undergauge, but brill is carried on the limit, and the limit is carried and being bored when finishing by target drill centre bore concrete perfusion at the bottom of stake, concrete has also been filled the stake hole, according to circumstances sees whether need to insert reinforcing steel bar cage more at last.This practice is similar to the CFG stake, but because in this way during pore-forming, the earth at place, stake position has been extruded in the earth around the stake, so the stake of making in this way is higher by 50% than the bearing capacity of CFG stake.
In above-mentioned two kinds of methods, after the stake hole formed, more than groundwater table and brill can not directly be carried in the area of undergauge, rams dirt with hand hammer and can form lime soil pile; Ram rubble with hand hammer and can form broken stone pile.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Accompanying drawing 1 is the verticality that moves stake machine align piles position and adjust drill bit.
Accompanying drawing 2 is target drill state diagrams when creeping into earth.
Accompanying drawing 3 is state diagrams behind the formation stake hole proposition drill bit.
The specific embodiment
Starting rotary drilling-head mechanism 4 as shown in Figure 2 makes target drill 3 rotations and pierces earth; If the difficulty of creeping into can pull down target drill 3. as embodiment 2 usefulness hoist engines 5
After getting into projected depth, propose target drill 3 as shown in Figure 3, so far finish drill tasks.
Claims (10)
1, the construction technology in a kind of hole, its step comprises:
A) mobile pile-forming machine perching makes drill bit stake position.
B) adjusting the stake machine makes target drill vertical with ground.
C) target drill is placed on naturally place, stake position, start rig and make the target drill rotation, target drill is under the pressure of deadweight, must creep into downwards by rotation, when preceding two flights of target drill pierce ground as traditional long screw auger, earth between helical blade can upwards slide with respect to helical blade, and when continuing to bore downwards, upwards the earth that slides is subjected to the extruding of the drilling rod that radially strengthens gradually the helical blade bottom from bottom to top and clamp-ons in the stake earth in week again.
D) after helical blade is cut earth fully, continue the special-purpose drilling rod of rotation, simultaneously with hydraulic cylinder or assembly pulley to pressing down target drill.
E) wait to get into projected depth after, mention special-purpose drilling rod, finish the work of boring
2, method according to claim 1 is characterized in that: before pile hole construction the shallow-layer soil body in the ground of stake position is carried out consolidation process.
3, reinforcing according to claim 2 is to finish by the deep layer stirring of cement.
4, method according to claim 1, it is characterized in that: after the stake hole forms, below groundwater table or the area of undergauge, but brill is carried on the limit, the limit is by target drill centre bore concrete perfusion at the bottom of stake, carry and boring when finishing, concrete has also been filled the stake hole, according to circumstances sees whether need to insert reinforcing steel bar cage more at last.
5, method according to claim 1 is characterized in that: the rotation of target drill is that the mode by the driven by motor speed changer realizes.
6, method according to claim 1 is characterized in that: the rotation of target drill is to realize by the method that diesel engine drives speed changer.
7, method according to claim 1 is characterized in that: the rotation of target drill was revolved hydraulic motor drive speed changer or was directly made it to rotate by hydraulic motor.
8, method according to claim 1 is characterized in that: the spacing of adjacent studs is to construct according to the spacing of tube-sinking cast-in-situ pile.
9, method according to claim 1, it is characterized in that: the top of target drill is and the isometrical steel pipe in stake hole, the bottom of target drill is the flight that external diameter and top steel pipe are isometrical, internal diameter increases from bottom to top gradually, has just disappeared when this flight carries out the transition to steel pipe.
10, method according to claim 1 is characterized in that: the earth in the stake hole is the rotation by target drill, clamp-ons the ambient earth gradually between the flight of drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031300197A CN1472397A (en) | 2003-06-10 | 2003-06-10 | Constructing technology for pile core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031300197A CN1472397A (en) | 2003-06-10 | 2003-06-10 | Constructing technology for pile core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1472397A true CN1472397A (en) | 2004-02-04 |
Family
ID=34153676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA031300197A Pending CN1472397A (en) | 2003-06-10 | 2003-06-10 | Constructing technology for pile core |
Country Status (1)
| Country | Link |
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| CN (1) | CN1472397A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344834C (en) * | 2005-05-23 | 2007-10-24 | 司建波 | Method for constructing hydraulic soil-extruded pile composite foundation |
| CN100365182C (en) * | 2006-09-01 | 2008-01-30 | 马伟华 | Cotton fiber fabric and manufacture technology thereof |
| CN102002940A (en) * | 2009-08-28 | 2011-04-06 | 包尔机械有限公司 | Drilling apparatus and method for working the ground |
| CN103174139A (en) * | 2013-04-16 | 2013-06-26 | 合肥建工集团有限公司 | Construction technology capable of inserting pile through gravel bed via lead hole |
| CN105544541A (en) * | 2016-01-27 | 2016-05-04 | 国网浙江省电力公司经济技术研究院 | High-frequency opposed light pile driver |
| CN107842313A (en) * | 2017-11-28 | 2018-03-27 | 重庆华硕建设有限公司 | A kind of rotary drilling rig compact making hole construction technology |
-
2003
- 2003-06-10 CN CNA031300197A patent/CN1472397A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100344834C (en) * | 2005-05-23 | 2007-10-24 | 司建波 | Method for constructing hydraulic soil-extruded pile composite foundation |
| CN100365182C (en) * | 2006-09-01 | 2008-01-30 | 马伟华 | Cotton fiber fabric and manufacture technology thereof |
| CN102002940A (en) * | 2009-08-28 | 2011-04-06 | 包尔机械有限公司 | Drilling apparatus and method for working the ground |
| CN102002940B (en) * | 2009-08-28 | 2012-10-10 | 包尔机械有限公司 | Drilling apparatus and method for working the ground |
| CN103174139A (en) * | 2013-04-16 | 2013-06-26 | 合肥建工集团有限公司 | Construction technology capable of inserting pile through gravel bed via lead hole |
| CN105544541A (en) * | 2016-01-27 | 2016-05-04 | 国网浙江省电力公司经济技术研究院 | High-frequency opposed light pile driver |
| CN107842313A (en) * | 2017-11-28 | 2018-03-27 | 重庆华硕建设有限公司 | A kind of rotary drilling rig compact making hole construction technology |
| CN107842313B (en) * | 2017-11-28 | 2019-04-30 | 重庆华硕建设有限公司 | A kind of rotary drilling rig compact making hole construction technology |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |