CN103195074A - Bottom cleaning method of pile foundation - Google Patents
Bottom cleaning method of pile foundation Download PDFInfo
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- CN103195074A CN103195074A CN2013101032255A CN201310103225A CN103195074A CN 103195074 A CN103195074 A CN 103195074A CN 2013101032255 A CN2013101032255 A CN 2013101032255A CN 201310103225 A CN201310103225 A CN 201310103225A CN 103195074 A CN103195074 A CN 103195074A
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- pile foundation
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Abstract
The invention provides a bottom cleaning method of a pile foundation. In the bottom cleaning method of the pile foundation, a single-hole bottom cleaning method is utilized to perform slag removal operation of a pile bottom and namely a coring hole is drilled in the center of the pile foundation to ensure that a hole cleaning radius of a single-hole is capable of covering an integral sediment area which is arranged under the pile foundation and a high pressure jet grouting machine and an air compressor are utilized to perform thorough slag removal of the pile bottom to enable single-hole bottom cleaning to achieve a porous cleaning effect.
Description
Technical field
The present invention relates to the realm of building construction, relate in particular to method of the clear end of a kind of pile foundation.
Background technology
Now most engineering troop is when the clear end operation of carrying out pile foundation, generally in carrying out the pile foundation at the end clearly, needs are drilled into few three holes equably, and it is die-cut thoroughly with the sediment that guarantees the pile foundation bottom to use water pump to spray flowing water simultaneously in these holes, but method of the clear end of such pile foundation can be damaged the structure of pile foundation to a great extent, causes the structural instability of pile foundation and influences the quality of piling.
Summary of the invention
The purpose of this invention is to provide method of the clear end of a kind of pile foundation, to be implemented on the basis that guarantees the scarfing cinder radius pile foundation is carried out the clear end of single hole.
For achieving the above object, the invention provides method of the clear end of a kind of pile foundation, be used for removing the sediment of described pile foundation bottom, method of the clear end of described pile foundation comprises:
Step 1: in described pile foundation centre-drilling hole, whole pile foundation is run through in the core hole that drills through;
Step 2: high-pressure rotary jetting apparatus is connected with an end of high-pressure rotary-spray drilling rod, the other end of described high-pressure rotary-spray drilling rod is extend in the bearing stratum zone of below, described sediment zone, the diameter of described high-pressure rotary-spray drilling rod is less than the described diameter of getting the core hole;
Step 3: adopt high-pressure rotary jetting apparatus to inject clear water earlier, and begin the rotary-jet clear water, promote the spout of described high-pressure rotary-spray drilling rod then gradually, die-cut pile bottom sediment;
Step 4: after pile bottom sediment fully is die-cut into suspended particulate, starts air compressor machine and at the bottom of stake, import high strong gas pressure;
Step 5: continue water spray at the bottom of the stake and import high strong gas pressure, a mixed serum that contains sediment at the bottom of utilizing atmospheric pressure to make is released outside the pile foundation by air pressure, until finishing the thoroughly clear end.
Further, in step 1, use core drilling rig to hole at described pile foundation center.
Further, in step 2, the other end of described high-pressure rotary-spray drilling rod stretches into described bearing stratum zone and makes the spout of described high-pressure rotary jetting apparatus be positioned at the bottom in sediment zone.
Further, the water flow pressure that described high-pressure rotary jetting apparatus sprays is at least 40Mpa, and air compressor machine is 9m
3Air compressor machine, the high strong gas pressure of output is 0.8MPa.
Further, described pile foundation diameter is 1.3m, and the thickness of described sediment is smaller or equal to 0.5m.
Compared with prior art, the present invention has following beneficial effect:
Scarfing cinder operation at the bottom of method of the clear end of pile foundation provided by the invention adopts the mode at the clear end of single hole to carry out, the center of core hole drill in pile foundation will be got, can cover whole sediment zone under the pile foundation with the clear pore radius that guarantees single hole, and the thorough scarfing cinder at the bottom of using high-pressure rotary jetting apparatus and air compressor machine to carry out, make the clear end of single hole can reach the effect at the clear end of porous.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
The enforcement schematic diagram of the method for the clear end of pile foundation that Fig. 1 provides for the embodiment of the invention;
In Fig. 1,
1: pile foundation; 2: the sediment zone; 3: the bearing stratum zone; 4: the high-pressure rotary-spray drilling rod; 5: get the core hole.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the method for the clear end of pile foundation that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that accompanying drawing all adopts very the form of simplifying and all uses non-ratio accurately, only in order to convenient, the purpose of the aid illustration embodiment of the invention lucidly.
Core concept of the present invention is, method of the clear end of a kind of pile foundation is provided, and is used for removing the sediment of described pile foundation bottom, and method of the clear end of described pile foundation comprises step 1: in described pile foundation centre-drilling hole, whole pile foundation is run through in the core hole that drills through; Step 2: high-pressure rotary jetting apparatus is connected with an end of high-pressure rotary-spray drilling rod, the other end of described high-pressure rotary-spray drilling rod is extend in the bearing stratum zone of below, pile bottom sediment zone, the diameter of described high-pressure rotary-spray drilling rod is less than the described diameter of getting the core hole; Step 3: start high-pressure rotary jetting apparatus and begin rotary-jet clear water and high strong gas pressure, and promote the spout of described high-pressure rotary-spray drilling rod, die-cut pile bottom sediment gradually; Step 4: after pile bottom sediment fully is die-cut into suspended particulate, starts air compressor machine and at the bottom of stake, import high strong gas pressure; Continue water spray at the bottom of the stake and import high strong gas pressure, a mixed serum that contains sediment at the bottom of utilizing atmospheric pressure to make is released outside the pile foundation by air pressure, until finishing the thoroughly clear end.Scarfing cinder operation at the bottom of method of the clear end of pile foundation provided by the invention adopts the mode at the clear end of single hole to carry out, the center of core hole drill in pile foundation will be got, can cover whole sediment zone under the pile foundation with the clear pore radius that guarantees single hole, and the thorough scarfing cinder at the bottom of using high-pressure rotary jetting apparatus and air compressor machine to carry out, make the clear end of single hole can reach the effect at the clear end of porous.
Please refer to Fig. 1, the enforcement schematic diagram of the method for the clear end of pile foundation that Fig. 1 provides for the embodiment of the invention.
As shown in Figure 1, the embodiment of the invention provides method of the clear end of a kind of pile foundation, is used for removing the sediment of described pile foundation 1 bottom, and method of the clear end of described pile foundation comprises:
Step 1: in the centre-drilling hole of described pile foundation 1, whole pile foundation 1 is run through in the core hole 5 that drills through;
Step 2: high-pressure rotary jetting apparatus is connected with an end of high-pressure rotary-spray drilling rod 4, the other end of described high-pressure rotary-spray drilling rod 4 is extend in the bearing stratum zone 3 of 2 belows, pile bottom sediment zone, the diameter of described high-pressure rotary-spray drilling rod 4 is less than the described diameter of getting core hole 5;
Step 3: adopt high-pressure rotary jetting apparatus to inject clear water earlier, and begin the rotary-jet clear water, promote the spout of described high-pressure rotary-spray drilling rod 4 then gradually, die-cut pile bottom sediment 2;
Step 4: after pile bottom sediment fully is die-cut into suspended particulate, starts air compressor machine and at the bottom of stake, import high strong gas pressure;
Step 5: continue water spray at the bottom of the stake and import high strong gas pressure, a mixed serum that contains sediment at the bottom of utilizing atmospheric pressure to make is released outside the pile foundation by air pressure, until finishing the thoroughly clear end.
Scarfing cinder operation at the bottom of method of the clear end of pile foundation provided by the invention adopts the mode at the clear end of single hole to carry out, be drilled in the center of pile foundation 1 with getting core hole 5, can cover whole sediment zone 2 under the pile foundation 1 with the clear pore radius that guarantees single hole, and the thorough scarfing cinder at the bottom of using high-pressure rotary jetting apparatus and air compressor machine to carry out, make the clear end of single hole can reach the effect at the clear end of porous.
Further, in step 1, use core drilling rig to hole at described pile foundation 1 center.
Further, in step 2, the other end of described high-pressure rotary-spray drilling rod 4 stretches into described bearing stratum zone 3 about 15cm, and makes the spout of described high-pressure rotary jetting apparatus be positioned at the bottom in sediment zone 2.
In step 3, the water flow pressure that described high-pressure rotary jetting apparatus sprays is at least 40MPa, and the hoisting velocity of the spout of described high-pressure rotary-spray drilling rod 4 is 5cm/min, and the rotary speed of the spout of described high-pressure rotary jetting apparatus when jet water course is 20 commentaries on classics/min.
Further, in step 4, the atmospheric pressure of described air compressor machine output is 0.8Mpa, and air compressor machine is 9m
3Air compressor machine.
Further, the diameter of described pile foundation 1 is 1.3m, and the thickness in described sediment zone 2 is smaller or equal to 0.5m.
Obviously, those skilled in the art can carry out various changes and distortion to the present invention and not break away from the spirit and scope of the present invention.Like this, if these modifications of the present invention and distortion belong within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and is out of shape interior.
Claims (8)
1. the method for the clear end of pile foundation is used for removing the sediment of described pile foundation bottom, it is characterized in that, comprising:
Step 1: in described pile foundation centre-drilling hole, whole pile foundation is run through in the core hole that drills through;
Step 2: high-pressure rotary jetting apparatus is connected with an end of high-pressure rotary-spray drilling rod, the other end of described high-pressure rotary-spray drilling rod is extend in the bearing stratum zone of below, described sediment zone, the diameter of described high-pressure rotary-spray drilling rod is less than the described diameter of getting the core hole;
Step 3: adopt high-pressure rotary jetting apparatus to inject clear water earlier, and begin the rotary-jet clear water, promote the spout of described high-pressure rotary-spray drilling rod then gradually, die-cut pile bottom sediment;
Step 4: after pile bottom sediment fully is die-cut into suspended particulate, starts air compressor machine and at the bottom of stake, import high strong gas pressure;
Step 5: continue water spray at the bottom of the stake and import high strong gas pressure, a mixed serum that contains sediment at the bottom of utilizing atmospheric pressure to make is released outside the pile foundation by air pressure, until finishing the thoroughly clear end.
2. according to the described pile foundation of claim 1 method of the clear end, it is characterized in that, in step 1, use core drilling rig to hole at described pile foundation center.
3. according to the described pile foundation of claim 1 method of the clear end, it is characterized in that in step 2, the other end of described high-pressure rotary-spray drilling rod stretches into described bearing stratum zone and makes the spout of described high-pressure rotary jetting apparatus be positioned at the sediment zone.
4. according to the described pile foundation of claim 3 method of the clear end, it is characterized in that the water flow pressure that described high-pressure rotary jetting apparatus sprays is at least 40MPa.
5. according to the described pile foundation of claim 1 method of the clear end, it is characterized in that in step 4, described air compressor machine is 9m
3Air compressor machine, the high strong gas pressure of output is 0.8MPa.
6. according to the described pile foundation of claim 1 method of the clear end, it is characterized in that the described diameter of getting the core hole is 101mm.
7. according to the described pile foundation of claim 6 method of the clear end, it is characterized in that the diameter of described high-pressure rotary-spray drilling rod is 60mm.
8. according to each method of clear end of described pile foundation of claim 1 to 7, it is characterized in that described pile foundation diameter is 1.3m, the thickness of described sediment is smaller or equal to 0.5m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101032255A CN103195074A (en) | 2013-03-27 | 2013-03-27 | Bottom cleaning method of pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101032255A CN103195074A (en) | 2013-03-27 | 2013-03-27 | Bottom cleaning method of pile foundation |
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| CN103195074A true CN103195074A (en) | 2013-07-10 |
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| CN2013101032255A Pending CN103195074A (en) | 2013-03-27 | 2013-03-27 | Bottom cleaning method of pile foundation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320331A (en) * | 2016-09-23 | 2017-01-11 | 中交第航务工程局有限公司 | Construction method for penetrating block stone layer of pore-forming system of high-pressure jet grouting pile |
| CN109235438A (en) * | 2018-09-12 | 2019-01-18 | 中国化学工程第十六建设有限公司 | A kind of quick borehole cleaning method of prestressing concrete hollow pile |
| CN109736313A (en) * | 2019-01-03 | 2019-05-10 | 中国水利水电第十工程局有限公司 | Drill-pouring end-bearing pile handles pile bottom sediment technique using coring hole grouting behind shaft or drift lining |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646031A (en) * | 1979-09-20 | 1981-04-27 | Shiraishi Kiso Koji Kk | Constructing method for pile foundation footing with erected trunk |
| CN1614156A (en) * | 2004-12-06 | 2005-05-11 | 雷玉华 | Construction method for making hollow pile with large end at bottom by casting concrete in situ |
| CN101109179A (en) * | 2007-06-21 | 2008-01-23 | 河北建设勘察研究院有限公司 | Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile |
| CN201605577U (en) * | 2009-12-28 | 2010-10-13 | 中国核工业华兴建设有限公司 | Borehole cleaning device for mechanical-boring cast-in-place pile |
-
2013
- 2013-03-27 CN CN2013101032255A patent/CN103195074A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5646031A (en) * | 1979-09-20 | 1981-04-27 | Shiraishi Kiso Koji Kk | Constructing method for pile foundation footing with erected trunk |
| CN1614156A (en) * | 2004-12-06 | 2005-05-11 | 雷玉华 | Construction method for making hollow pile with large end at bottom by casting concrete in situ |
| CN101109179A (en) * | 2007-06-21 | 2008-01-23 | 河北建设勘察研究院有限公司 | Gas lifting reverse circulation porus cleaning construction method for slurry bulkhead cast-in-situ bored pile |
| CN201605577U (en) * | 2009-12-28 | 2010-10-13 | 中国核工业华兴建设有限公司 | Borehole cleaning device for mechanical-boring cast-in-place pile |
Non-Patent Citations (1)
| Title |
|---|
| 蒋祖浩: "高压旋喷与风力清孔联合工艺处理灌注桩桩端沉渣", 《岩土工程界》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320331A (en) * | 2016-09-23 | 2017-01-11 | 中交第航务工程局有限公司 | Construction method for penetrating block stone layer of pore-forming system of high-pressure jet grouting pile |
| CN109235438A (en) * | 2018-09-12 | 2019-01-18 | 中国化学工程第十六建设有限公司 | A kind of quick borehole cleaning method of prestressing concrete hollow pile |
| CN109235438B (en) * | 2018-09-12 | 2020-09-08 | 中国化学工程第十六建设有限公司 | Rapid hole cleaning method for prestressed concrete hollow pile |
| CN109736313A (en) * | 2019-01-03 | 2019-05-10 | 中国水利水电第十工程局有限公司 | Drill-pouring end-bearing pile handles pile bottom sediment technique using coring hole grouting behind shaft or drift lining |
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Application publication date: 20130710 |