CN102767332A - Screw pile machine and cast-in place pile construction method - Google Patents
Screw pile machine and cast-in place pile construction method Download PDFInfo
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- CN102767332A CN102767332A CN2012102840688A CN201210284068A CN102767332A CN 102767332 A CN102767332 A CN 102767332A CN 2012102840688 A CN2012102840688 A CN 2012102840688A CN 201210284068 A CN201210284068 A CN 201210284068A CN 102767332 A CN102767332 A CN 102767332A
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Abstract
The invention relates to the technical field of construction machines and particularly relates to a screw pile machine. The machine is characterized in that a revolving device is arranged, the revolving device is provided with a casing, the casing is connected with a pile frame or a power head casing, a revolving body is arranged inside the casing, the upper end of the revolving body is connected with a core pipe or a rotating shaft of a power head through a connection flange, the lower end of the revolving body is connected with the core pipe through a connection flange, the casing and the revolving body form a slurry cavity, an upper end and a lower end of the casing, which are matched with the revolving body are respectively provided with water seal, a slurry guide pipe which is communicated with the slurry cavity is arranged on the casing, the other end of the slurry guide pipe is connected with a slurry injection pump, a slurry injection channel is arranged inside the revolving body, one end of the slurry injection channel is communicated with the slurry cavity, the other end of the slurry injection channel is communicated with the slurry injection pipe which is arranged at the lower end of the revolving body, and the slurry injection pipe penetrates through a spiral blade arranged on the core pipe and is connected with a slurry injection mouth arranged on a drill, so that pipe filling and grouting are performed simultaneously. The machine has the advantages that the construction speed is fast, the side resistance and the end resistance of foundation piles are large.
Description
Technical field
The present invention relates to the building machinery technical field, the screw pile machine and the bored pile construction method of specifically a kind of boring, the synchronous making pile by grouting into of perfusion.
Background technology
As everyone knows, building all needs stable basis, particularly high-rise building and all needs firm foundation pile; The bearing capacity of the high more needed foundation pile of building is just big more, and the bearing capacity of foundation pile is the collateral resistance and the end resistance sum of foundation pile, and building foundation pile need be by cooperatings such as pile driver, batching plant, concrete mixer, concrete pumps; Existing screw pile machine comprises pile frame, running gear, unit head, auger stem and drill bit, and auger stem wherein is provided with multistage core pipe, and the core pipe is provided with spiral blade; The two ends of core pipe are provided with flange, are connected by flange between the core pipe, and the upper end of core pipe is connected with unit head through flange; The lower end of core pipe is connected with drill bit through flange, and described drill bit is made up of flange, core pipe, blade, bearing pin and apex point, and core pipe upper end is fixedly connected with flange; The lower end is connected with apex point through bearing pin, holes earlier when this stake machine is worked, concrete perfusion again; Descending reinforcing cage or post then can not mud jacking, and conventional back mud jacking technology is to adopt cement paste or casing to protect type; Behind the mechanical hole building, lay the reinforcing cage that has Grouting Pipe again, then the concrete perfusion pile; When treating behind the pile that concrete has certain intensity, again through Grouting Pipe to a pile body periphery and stake end cementing slurries, its deficiency is that operation is many, inconvenient operation, mud jacking and castinplace pile can not form synchronously; The bearing capacity of foundation pile is poor, and the collateral resistance of foundation pile is little.
Summary of the invention
The objective of the invention is to solve the deficiency of above-mentioned prior art; Provide a kind of to the soil body of pile body side being whitewashed screw pile machine and bored pile construction method that the long auger of raising end resistance and collateral resistance pours into synchronous mud jacking in pile body end and the lifting drilling rod process.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of screw pile machine comprises pile frame, running gear, unit head, auger stem and drill bit, and auger stem wherein is provided with multistage core pipe; The core pipe is provided with spiral blade, and the two ends of core pipe are provided with flange, is connected by flange between the core pipe; The lower end of core pipe is connected with drill bit through flange, it is characterized in that being provided with slewing equipment, and slewing equipment is provided with housing; Housing is connected with pile frame or unit head housing, is provided with revolving body in the housing, and the upper end of revolving body is connected through the axis of rotation of adpting flange with core pipe or unit head; The lower end of revolving body is connected with the core pipe through adpting flange, and housing and revolving body form the slurry chamber, and the upper/lower terminal that housing matches with revolving body is respectively equipped with water seal; Housing be provided with starch that the chamber is connected lead the slurry pipe; The other end of leading the slurry pipe is connected with grouting pump, is provided with the slip casting passage in the revolving body, and an end of slip casting passage is connected with the slurry chamber; The other end of slip casting passage is connected with the Grouting Pipe that is located at the revolving body lower end, and the spiral blade that Grouting Pipe is passed on the core pipe is connected with slip casting mouth on the drill bit.
Slip casting mouth of the present invention is located at the back side of drill bit, and the slip casting mouth is one section Grouting Pipe, the front end sealing of Grouting Pipe, and the tube wall of Grouting Pipe is provided with at least two gunniting holes, and stake end and stake side are whitewashed.
The present invention is provided with two Grouting Pipe at least, and Grouting Pipe is shape and be connected with the outer wall of core pipe linearly.
A kind of bored pile construction method is characterized in that step is following:
Step 1, a brill stake hole, selected pile foundation position adopts screw pile machine that drill bit is fixed on the drilled pile center; Utilize the augers front end cutter tooth cutting soil layer, the soil body in the stake hole by the augers cutting after, rotate outside the rising tap along the core pipe that has helical blade; Be drilled into the design bearing stratum
Step 2, clear stake hole, the core pipe continues rotation, the soil body on helical blade and the core pipe being discharged outside the stake hole,
Step 3, spray prime cement liquid and castinplace pile base concrete, core pipe continue rotation and upper and lower moving, and translational speed is 0.05-0.08m/ minute; Displacement is 0.5-1.5m, opens grouting pump, and slurries form the slurry chamber by leading the entering of slurry pipe by housing and revolving body; And the slip casting passage in revolving body, Grouting Pipe be by the ejection of slip casting mouth, and grouting pressure is for being not less than 15MPa, and the slurries of high pressure are sprayed by the slip casting mouth; Wash and be mixed into the soil body of stake hole bottom hole wall open concrete, whitewash open after 5-8 minute concrete pump with concrete by core pipe, the discharge of drill bit concrete outlet, concrete is filled a bottom outlet; Form down mushroom concrete pile seat in lower end, stake hole, improved the end resistance and the collateral resistance of foundation pile, slurries are the cement paste of the above label of 525#; The proportion of cement paste is 1.1-1.5
Step 4, the whitewashing of stake hole wall and concrete perfusion, core pipe continue rotation and upwards promote, and hoisting velocity is 0.1-0.3m/ minute; Slurries form the slurry chamber by leading the entering of slurry pipe by housing and revolving body in the lifting process; And the slip casting passage in revolving body, Grouting Pipe be by the ejection of slip casting mouth, and grouting pressure is 8-12MPa, and slurries wash away the soft soil body on the stake hole wall and be mixed into concrete and fall into the concrete pile side; Slurries form the hard cement layer of one deck on the stake hole wall; Concrete pump is discharged by core pipe, drill bit concrete outlet concrete in the lifting process with concrete, and the bored pile hole forms pile foundation, and slurries are the cement paste of 525# with the number of performing; The proportion of cement paste is 1.1-1.5
When the present invention uses; Utilize augers cutting soil layer, after the soil body in the stake hole is cut by augers, along outside the drilling rod rotation rising tap that has helical blade; When bit drills after design bearing stratum; Start grouting pump and sprayed by gunniting hole with cement grout injection slurry chamber and by slip casting passage, Grouting Pipe, the high pressure slurries spray the stake hole bottom formation foundation pile of falling mushroom seat, have increased the end resistance and the collateral resistance of foundation pile greatly; Realized pile and slip casting synchronously, advantage such as have that friction, noiselessness, mud-less pollution, speed of application are fast, the collateral resistance of foundation pile and end resistance are big.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of structural representation of slewing equipment among the present invention.
Fig. 3 is a kind of structural representation of slip casting mouth among the present invention.
Fig. 4 is the sketch map of foundation pile among the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified:
Shown in accompanying drawing, a kind of screw pile machine comprises pile frame, running gear, unit head, auger stem and drill bit, and auger stem wherein is provided with multistage core pipe; The core pipe is provided with spiral blade, and the two ends of core pipe are provided with flange, is connected by flange between the core pipe, and the lower end of core pipe is connected with drill bit through flange; The structure of above-mentioned each ingredient and the interconnected relationship between them are identical with prior art, and this does not give unnecessary details, and the invention is characterized in to be provided with slewing equipment, and slewing equipment is provided with housing 1; Housing 1 is connected with pile frame or unit head housing, is provided with revolving body 2 in the housing 1, and revolving body 2 generally is cylindrical body, also can be column; Its outer wall is provided with the boss that matches with housing 1, and the upper end of revolving body 2 is connected through the axis of rotation of adpting flange with core pipe or unit head, and the lower end of revolving body 2 is connected with the core pipe through adpting flange 3; Its syndeton is identical with prior art, and this does not give unnecessary details, and housing 1 matches with revolving body 2 and forms the slurry chamber; The upper/lower terminal that housing 1 matches with revolving body 2 is respectively equipped with water seal 4, leak with the slurries that prevent to starch in the chamber, housing 1 be provided with starch that the chamber is connected lead slurry pipe 5; The other end of leading slurry pipe 5 is connected with grouting pump, is provided with slip casting passage 6 in the revolving body 2, generally is provided with two slip casting passages; One end of slip casting passage 6 is connected with the slurry chamber, and the other end of slip casting passage 6 is connected with the Grouting Pipe that is located at the revolving body lower end 7, and the spiral blade 8 that Grouting Pipe 7 is passed on the core pipe is connected with slip casting mouth 10 on the drill bit 9; Described slip casting mouth is located at the back side of drill bit 9, and slip casting mouth 10 is one section front end sealing Grouting Pipe, and the tube wall of Grouting Pipe is provided with at least two gunniting holes; Gunniting hole also can be located on the slip casting mouth front end sealing surface, and is blocked to prevent gunniting hole, in addition; The present invention is provided with two Grouting Pipe at least, and Grouting Pipe is shape and be connected with the outer wall of core pipe linearly
A kind of bored pile construction method, step is following:
Step 1, a brill stake hole, selected pile foundation position adopts screw pile machine that drill bit is fixed on the drilled pile center; Utilize the augers front end cutter tooth cutting soil layer, the soil body in the stake hole by the augers cutting after, rotate outside the rising tap along the core pipe that has helical blade; Be drilled into the design bearing stratum
Step 2, clear stake hole, core pipe and drill bit continue rotation, the soil body on helical blade and the core pipe being discharged outside the stake hole,
Step 3, spray prime cement liquid and castinplace pile base concrete, core pipe continue rotation and upper and lower moving, and translational speed is 0.05-0.08m/ minute; Displacement is 0.5-1.5m, opens grouting pump, and slurries form the slurry chamber by leading the entering of slurry pipe by housing and revolving body; And the slip casting passage in revolving body, Grouting Pipe be by the ejection of slip casting mouth, and grouting pressure is for being not less than 15MPa, and the slurries of high pressure are sprayed by the slip casting mouth; Wash and be mixed into the soil body of stake hole bottom hole wall open concrete, whitewash open after 5-8 minute concrete pump with concrete by core pipe, the discharge of drill bit concrete outlet, the structure of drill bit concrete outlet is with identical with prior art; This does not give unnecessary details, and concrete is filled a bottom outlet, forms down mushroom concrete pile seat in lower end, stake hole; The end resistance and the collateral resistance of foundation pile have been improved; Slurries are the cement paste of the above label of 525#, and the proportion of cement paste is 1.1-1.5
Step 4, the whitewashing of stake hole wall and concrete perfusion, core pipe continue rotation and upwards promote, and hoisting velocity is 0.1-0.3m/ minute; Slurries form the slurry chamber by leading the entering of slurry pipe by housing and revolving body in the lifting process; And the slip casting passage in revolving body, Grouting Pipe be by the ejection of slip casting mouth, and grouting pressure is 8-12MPa, and slurries wash away the soft soil body on the stake hole wall and be mixed into concrete and fall into the concrete pile side; Slurries form the hard cement layer of one deck on the stake hole wall; Concrete pump is discharged by core pipe, drill bit concrete outlet concrete in the lifting process with concrete, and the bored pile hole forms pile foundation, and slurries are the cement paste of 525# with the number of performing; The proportion of cement paste is 1.1-1.5
The present invention forms the foundation pile of falling mushroom seat in bottom, stake hole; The end resistance and the collateral resistance of foundation pile have been increased greatly; Realized the synchronous of pile and slip casting; Need be through Grouting Pipe to a pile body periphery and stake end cementing slurries, advantage such as have that friction, noiselessness, mud-less pollution, speed of application are fast, the collateral resistance of foundation pile and end resistance are big.
Claims (4)
1. a screw pile machine comprises pile frame, running gear, unit head, auger stem and drill bit, and auger stem wherein is provided with multistage core pipe; The core pipe is provided with spiral blade, and the two ends of core pipe are provided with flange, is connected by flange between the core pipe; The lower end of core pipe is connected with drill bit through flange, it is characterized in that being provided with slewing equipment, and slewing equipment is provided with housing; Housing is connected with pile frame or unit head housing, is provided with revolving body in the housing, and the upper end of revolving body is connected through the axis of rotation of adpting flange with core pipe or unit head; The lower end of revolving body is connected with the core pipe through adpting flange, and housing and revolving body form the slurry chamber, and the upper/lower terminal that housing matches with revolving body is respectively equipped with water seal; Housing be provided with starch that the chamber is connected lead the slurry pipe; The other end of leading the slurry pipe is connected with grouting pump, is provided with the slip casting passage in the revolving body, and an end of slip casting passage is connected with the slurry chamber; The other end of slip casting passage is connected with the Grouting Pipe that is located at the revolving body lower end, and the spiral blade that Grouting Pipe is passed on the core pipe is connected with slip casting mouth on the drill bit.
2. a kind of screw pile machine according to claim 1 is characterized in that the slip casting mouth is located at the back side of drill bit, and the slip casting mouth is one section Grouting Pipe, the front end sealing of Grouting Pipe, and the tube wall of Grouting Pipe is provided with at least two gunniting holes.
3. a kind of screw pile machine according to claim 1 is characterized in that being provided with two Grouting Pipe, and Grouting Pipe is shape and be connected with the outer wall of core pipe linearly.
4. bored pile construction method, step is following:
Step 1, a brill stake hole, selected pile foundation position adopts screw pile machine that drill bit is fixed on the drilled pile center; Utilize the augers front end cutter tooth cutting soil layer, the soil body in the stake hole by the augers cutting after, rotate outside the rising tap along the core pipe that has helical blade; Be drilled into the design bearing stratum
Step 2, clear stake hole, core pipe and drill bit continue rotation, the soil body on helical blade and the core pipe being discharged outside the stake hole,
Step 3, spray prime cement liquid and castinplace pile base concrete, core pipe continue rotation and upper and lower moving, and translational speed is 0.05-0.08m/ minute; Displacement is 0.5-1.5m, opens grouting pump, and slurries form the slurry chamber by leading the entering of slurry pipe by housing and revolving body; And the slip casting passage in revolving body, Grouting Pipe be by the ejection of slip casting mouth, and grouting pressure is for being not less than 15MPa, and the slurries of high pressure are sprayed by the slip casting mouth; Wash and be mixed into the soil body of stake hole bottom hole wall open concrete, whitewash open after 5-8 minute concrete pump with concrete by core pipe, the discharge of drill bit concrete outlet, concrete is filled a bottom outlet; Form down mushroom concrete pile seat in lower end, stake hole, improved the end resistance and the collateral resistance of foundation pile, slurries are the cement paste of the above label of 525#; The proportion of cement paste is 1.1-1.5
Step 4, the whitewashing of stake hole wall and concrete perfusion, core pipe continue rotation and upwards promote, and hoisting velocity is 0.1-0.3m/ minute; Slurries form the slurry chamber by leading the entering of slurry pipe by housing and revolving body in the lifting process; And the slip casting passage in revolving body, Grouting Pipe be by the ejection of slip casting mouth, and grouting pressure is 8-12MPa, and slurries wash away the soft soil body on the stake hole wall and be mixed into concrete and fall into the concrete pile side; Slurries form the hard cement layer of one deck on the stake hole wall; Concrete pump is discharged by core pipe, drill bit concrete outlet concrete in the lifting process with concrete, and the bored pile hole forms pile foundation, and slurries are the cement paste of 525# with the number of performing; The proportion of cement paste is 1.1-1.5
Step 5, lay reinforcing cage and become foundation pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284068.8A CN102767332B (en) | 2012-08-11 | 2012-08-11 | Screw pile machine and cast-in place pile construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210284068.8A CN102767332B (en) | 2012-08-11 | 2012-08-11 | Screw pile machine and cast-in place pile construction method |
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| Publication Number | Publication Date |
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| CN102767332A true CN102767332A (en) | 2012-11-07 |
| CN102767332B CN102767332B (en) | 2015-05-13 |
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| CN201210284068.8A Active CN102767332B (en) | 2012-08-11 | 2012-08-11 | Screw pile machine and cast-in place pile construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812475A (en) * | 2016-12-09 | 2017-06-09 | 云南省建筑科学研究院 | A kind of turnable Simple water pile rotary drilling rig in chassis |
| CN106968596A (en) * | 2017-03-24 | 2017-07-21 | 湖南宏禹工程集团有限公司 | Controllable compaction grouting pile driving construction equipment |
| CN113153191A (en) * | 2021-02-24 | 2021-07-23 | 中基发展建设工程有限责任公司 | Long spiral drilling machine and construction method of air-entrapping CFG pile |
| CN113174943A (en) * | 2021-04-13 | 2021-07-27 | 三峡大学 | Rotary drilling type sand pumping pore-forming side wall high-pressure grouting device and construction method |
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| JPS5758725A (en) * | 1980-09-26 | 1982-04-08 | Marugo Kiso Kogyo Kk | Burying work of precast pile and shoe |
| EP0837190A2 (en) * | 1996-10-16 | 1998-04-22 | Ingrid Dr. Klemm | Process and device for the controlled in-ground realisation of piles and bulkheads |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106812475A (en) * | 2016-12-09 | 2017-06-09 | 云南省建筑科学研究院 | A kind of turnable Simple water pile rotary drilling rig in chassis |
| CN106968596A (en) * | 2017-03-24 | 2017-07-21 | 湖南宏禹工程集团有限公司 | Controllable compaction grouting pile driving construction equipment |
| CN113153191A (en) * | 2021-02-24 | 2021-07-23 | 中基发展建设工程有限责任公司 | Long spiral drilling machine and construction method of air-entrapping CFG pile |
| CN113174943A (en) * | 2021-04-13 | 2021-07-27 | 三峡大学 | Rotary drilling type sand pumping pore-forming side wall high-pressure grouting device and construction method |
| CN113174943B (en) * | 2021-04-13 | 2022-06-21 | 三峡大学 | Rotary drilling type sand pumping pore-forming side wall high-pressure grouting device and construction method |
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| Publication number | Publication date |
|---|---|
| CN102767332B (en) | 2015-05-13 |
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