CN102767332B - 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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- CN102767332B CN102767332B CN201210284068.8A CN201210284068A CN102767332B CN 102767332 B CN102767332 B CN 102767332B CN 201210284068 A CN201210284068 A CN 201210284068A CN 102767332 B CN102767332 B CN 102767332B
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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 building machinery technical field, specifically a kind of boring, the screw pile machine of pouring into synchronous making pile by grouting and bored pile construction method.
Background technology
As everyone knows, building all needs stable basis, particularly high-rise building all needs firmly foundation pile, the bearing capacity of the higher required foundation pile of building is larger, the bearing capacity of foundation pile is collateral resistance and the end resistance sum of foundation pile, build foundation pile to need by pile driver, batching plant, concrete mixer, the cooperatings such as concrete pump, existing screw pile machine comprises pile frame, running gear, unit head, auger stem and drill bit, auger stem is wherein provided with multistage core pipe, core pipe is provided with spiral blade, the two ends of core pipe are provided with flange, be connected by flange between core pipe, 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, described drill bit is by flange, core pipe, blade, bearing pin and apex point composition, core pipe upper end is fixedly connected with flange, lower end is connected with apex point through bearing pin, first hole during this stake machine work, Reperfu-sion concrete, then descending reinforcing cage or post, can not mud jacking, and the post-mud-jacking bored pile of routine adopts cement paste or casing to protect type, after mechanical hole building, lay the reinforcing cage with Grouting Pipe again, then concrete perfusion pile, after pile when concrete has some strength, again by Grouting Pipe to pile body periphery and stake end cementing slurries, its deficiency is that operation is many, inconvenient operation, mud jacking and castinplace pile can not synchronously be formed, the bearing capacity of foundation pile is poor, the collateral resistance of foundation pile is little.
Summary of the invention
The object of the invention is to solve above-mentioned the deficiencies in the prior art, there is provided a kind of to whitewash to the soil body of pile body side in pile body end and lifting drilling rod process, the long auger improving end resistance and collateral resistance pours into screw pile machine and the bored pile construction method of synchronous mud jacking.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of screw pile machine, comprise pile frame, running gear, unit head, auger stem and drill bit, auger stem is wherein provided with multistage core pipe, core pipe is provided with spiral blade, the two ends of core pipe are provided with flange, be connected by flange between 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, slewing equipment is provided with housing, housing is connected with pile frame or unit head housing, revolving body is provided with in housing, 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 core pipe through adpting flange, housing and revolving body are formed starches chamber, it is upper that housing matches with revolving body, lower two ends are respectively equipped with water seal, housing be provided with starch that chamber is connected lead to starch and manage, the other end of leading slurry pipe is connected with grouting pump, slip casting passage is provided with in revolving body, one end of slip casting passage is connected with slurry chamber, the other end of slip casting passage is connected with the Grouting Pipe being located at revolving body lower end, Grouting Pipe is connected with the grouting nozzle on drill bit through the spiral blade on core pipe.
Grouting nozzle of the present invention is located at the back side of drill bit, and grouting nozzle is one section of Grouting Pipe, and the front end of Grouting Pipe is closed, and the tube wall of Grouting Pipe is provided with at least two gunniting holes, whitewashes to stake end and stake side.
The present invention is at least provided with two Grouting Pipe, and Grouting Pipe is linearly and be connected with the outer wall of core pipe.
A kind of bored pile construction method, is characterized in that step is as follows:
Step one, brill stake holes, selected pile foundation position, adopts screw pile machine that drill bit is fixed on drilled pile center, utilize augers front end cutter tooth cut soil layer, after the soil body in stake holes is cut by augers, rotate outside rising tap along the core pipe with helical blade, be drilled into design bearing stratum
Step 2, clear stake holes, core pipe continues to rotate, so that the soil body on helical blade and core pipe is discharged outside stake holes,
Step 3, spray prime cement liquid and castinplace pile base concrete, core pipe continue rotate and on, lower movement, translational speed is 0.05-0.08m/ minute, displacement is 0.5-1.5m, open grouting pump, slurries enter to be formed by housing and revolving body starch chamber by leading slurry pipe, and the slip casting passage in revolving body, Grouting Pipe is sprayed by grouting nozzle, grouting pressure is for being not less than 15MPa, the slurries of high pressure are sprayed by grouting nozzle, the soil body of hole wall bottom stake holes is washed open and carries out being mixed into concrete, whitewash and open concrete pump by concrete by core pipe after 5-8 minute, drill bit concrete outlet is discharged, a bottom outlet filled by concrete, mushroom concrete pile seat is formed in stake holes lower end, improve end resistance and the collateral resistance of foundation pile, slurries are the cement paste of more than 525# label, the proportion of cement paste is 1.1-1.5,
Step 4, stake holes wall whitewashing also concrete perfusion, core pipe continues rotate and upwards promote, hoisting velocity is 0.1-0.3m/ minute, in lifting process, slurries enter to be formed by housing and revolving body starch chamber by leading slurry pipe, and the slip casting passage in revolving body, Grouting Pipe is sprayed by grouting nozzle, grouting pressure is 8-12MPa, the soft soil body on stake holes wall washes away and is mixed into concrete and falls into concrete pile side by slurries, slurries form the hard cement layer of one deck on stake holes wall, in lifting process concrete pump by concrete by core pipe, concrete is discharged by drill bit concrete outlet, bored pile hole forms pile foundation, slurries are that 525# is with the cement paste of the number of performing, the proportion of cement paste is 1.1-1.5,
Step 5, lay reinforcing cage and become foundation pile.
When the present invention uses, augers is utilized to cut soil layer, after the soil body in stake holes is cut by augers, rotate outside rising tap along the drilling rod with helical blade, when after bit drills to design bearing stratum, start grouting pump by cement grout injection slurry chamber and by slip casting passage, Grouting Pipe is sprayed by gunniting hole, high pressure slurries spray bottom stake holes and form the foundation pile of falling mushroom seat, considerably increase end resistance and the collateral resistance of foundation pile, achieve the synchronous of pile and slip casting, there is friction, noiselessness, mud-less pollution, speed of application is fast, the collateral resistance of foundation pile and the advantage such as end resistance is large.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is a kind of structural representation of slewing equipment in the present invention.
Fig. 3 is a kind of structural representation of grouting nozzle in the present invention.
Fig. 4 is the schematic diagram of foundation pile in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in drawings, a kind of screw pile machine, comprise pile frame, running gear, unit head, auger stem and drill bit, auger stem is wherein provided with multistage core pipe, core pipe is provided with spiral blade, the two ends of core pipe are provided with flange, be connected by flange between core pipe, 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 same as the prior art, this does not repeat, the invention is characterized in and be provided with slewing equipment, slewing equipment is provided with housing 1, housing 1 is connected with pile frame or unit head housing, revolving body 2 is provided with in housing 1, revolving body 2 is generally in cylindrical body, also can be column, its outer wall is provided with the boss matched with housing 1, the upper end of revolving body 2 is connected through the axis of rotation of adpting flange with core pipe or unit head, the lower end of revolving body 2 is connected with core pipe through adpting flange 3, its syndeton is same as the prior art, this does not repeat, housing 1 matches to be formed with revolving body 2 and starches chamber, it is upper that housing 1 matches with revolving body 2, lower two ends are respectively equipped with water seal 4, in case the slurries in grouting chamber leak, housing 1 is provided with and starches leading that chamber is connected and starch pipe 5, the other end of leading slurry pipe 5 is connected with grouting pump, slip casting passage 6 is provided with in revolving body 2, generally be provided with two slip casting passages, one end of slip casting passage 6 is connected with slurry chamber, the other end of slip casting passage 6 is connected with the Grouting Pipe 7 being located at revolving body lower end, Grouting Pipe 7 is connected with the grouting nozzle 10 on drill bit 9 through the spiral blade 8 on core pipe, described grouting nozzle is located at the back side of drill bit 9, grouting nozzle 10 is that Grouting Pipe is closed in one section of front end, the tube wall of Grouting Pipe is provided with at least two gunniting holes, gunniting hole also can be located on the sealing surface of grouting nozzle front end, to prevent gunniting hole blocked, in addition, the present invention is at least provided with two Grouting Pipe, Grouting Pipe is linearly and be connected with the outer wall of core pipe,
A kind of bored pile construction method, step is as follows:
Step one, brill stake holes, selected pile foundation position, adopts screw pile machine that drill bit is fixed on drilled pile center, utilize augers front end cutter tooth cut soil layer, after the soil body in stake holes is cut by augers, rotate outside rising tap along the core pipe with helical blade, be drilled into design bearing stratum
Step 2, clear stake holes, core pipe and drill bit continue to rotate, so that the soil body on helical blade and core pipe is discharged outside stake holes,
Step 3, spray prime cement liquid and castinplace pile base concrete, core pipe continue rotate and on, lower movement, translational speed is 0.05-0.08m/ minute, displacement is 0.5-1.5m, open grouting pump, slurries enter to be formed by housing and revolving body starch chamber by leading slurry pipe, and the slip casting passage in revolving body, Grouting Pipe is sprayed by grouting nozzle, grouting pressure is for being not less than 15MPa, the slurries of high pressure are sprayed by grouting nozzle, the soil body of hole wall bottom stake holes is washed open and carries out being mixed into concrete, whitewash and open concrete pump by concrete by core pipe after 5-8 minute, drill bit concrete outlet is discharged, the structure of drill bit concrete outlet and same as the prior art, this does not repeat, a bottom outlet filled by concrete, mushroom concrete pile seat is formed in stake holes lower end, improve end resistance and the collateral resistance of foundation pile, slurries are the cement paste of more than 525# label, the proportion of cement paste is 1.1-1.5,
Step 4, stake holes wall whitewashing also concrete perfusion, core pipe continues rotate and upwards promote, hoisting velocity is 0.1-0.3m/ minute, in lifting process, slurries enter to be formed by housing and revolving body starch chamber by leading slurry pipe, and the slip casting passage in revolving body, Grouting Pipe is sprayed by grouting nozzle, grouting pressure is 8-12MPa, the soft soil body on stake holes wall washes away and is mixed into concrete and falls into concrete pile side by slurries, slurries form the hard cement layer of one deck on stake holes wall, in lifting process concrete pump by concrete by core pipe, concrete is discharged by drill bit concrete outlet, bored pile hole forms pile foundation, slurries are that 525# is with the cement paste of the number of performing, the proportion of cement paste is 1.1-1.5,
Step 5, lay reinforcing cage and become foundation pile.
The present invention forms the foundation pile of falling mushroom seat bottom stake holes, considerably increase end resistance and the collateral resistance of foundation pile, achieve the synchronous of pile and slip casting, not need by Grouting Pipe pile body periphery and stake end cementing slurries, have that friction, noiselessness, mud-less pollution, speed of application are fast, the collateral resistance of foundation pile and the advantage such as end resistance is large.
Claims (1)
1. a screw pile machine bored pile construction method, is characterized in that step is as follows:
Step one, brill stake holes, selected pile foundation position, adopts screw pile machine that drill bit is fixed on drilled pile center, utilize the cutter tooth of augers front end to cut soil layer, after the soil body in stake holes is cut by augers, rotate outside rising tap along the core pipe with helical blade, be drilled into design bearing stratum
Step 2, clear stake holes, core pipe and drill bit continue to rotate, and the soil property on helical blade and core pipe are discharged outside stake holes,
Step 3, spray prime cement liquid and castinplace pile base concrete, core pipe continue rotate and on, lower movement, translational speed is 0.05-0.08m/ minute, displacement is 0.5-1.5m, open grouting pump, slurries enter to be formed by housing and revolving body starch chamber by leading slurry pipe, and the slip casting passage in revolving body, Grouting Pipe is sprayed by grouting nozzle, grouting pressure is for being not less than 15MPa, the slurries of high pressure are sprayed by grouting nozzle, the soil body of hole wall bottom stake holes is washed open and carries out being mixed into concrete, whitewash and open concrete pump by concrete by core pipe after 5-8 minute, drill bit concrete outlet is discharged, a bottom outlet filled by concrete, mushroom concrete pile seat is formed in stake holes lower end, improve end resistance and the collateral resistance of foundation pile, slurries are the cement paste of more than 525# label, the proportion of cement paste is 1.1-1.5,
Step 4, stake holes wall whitewashing also concrete perfusion, core pipe continues rotate and upwards promote, hoisting velocity is 0.1-0.3m/ minute, in lifting process, slurries enter to be formed by housing and revolving body starch chamber by leading slurry pipe, and the slip casting passage in revolving body, Grouting Pipe is sprayed by grouting nozzle, grouting pressure is 8-12MPa, the soft soil body on stake holes wall washes away and is mixed into concrete and falls into concrete pile side by slurries, slurries form the hard cement layer of one deck on stake holes wall, in lifting process concrete pump by concrete by core pipe, concrete is discharged by drill bit concrete outlet, bored pile hole forms pile foundation, slurries are that 525# is with the cement paste of 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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| 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 CN102767332A (en) | 2012-11-07 |
| CN102767332B true CN102767332B (en) | 2015-05-13 |
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Families Citing this family (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 |
| CN106968596B (en) * | 2017-03-24 | 2018-12-28 | 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 |
| 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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| 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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| CN1391011A (en) * | 2002-07-19 | 2003-01-15 | 王景军 | Method and apparatus for forming shaped pile by drilling, high-pressure letting to enlarge hole and pressure pouring of concrete |
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| CN202688987U (en) * | 2012-08-11 | 2013-01-23 | 威海市水利岩土工程有限公司 | Spiral pile machine |
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| JPS5758725A (en) * | 1980-09-26 | 1982-04-08 | Marugo Kiso Kogyo Kk | Burying work of precast pile and shoe |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0837190A2 (en) * | 1996-10-16 | 1998-04-22 | Ingrid Dr. Klemm | Process and device for the controlled in-ground realisation of piles and bulkheads |
| CN2458343Y (en) * | 2001-01-20 | 2001-11-07 | 曹兴明 | Concrete casting and slip casting pedestal device of screw drilling rod central pump |
| CN1370893A (en) * | 2002-04-04 | 2002-09-25 | 中国建筑科学研究院 | Pile end mortar pre-pressing construction method and apparatus for long screw auger drilling deposited pile and CFG pile |
| CN1391011A (en) * | 2002-07-19 | 2003-01-15 | 王景军 | Method and apparatus for forming shaped pile by drilling, high-pressure letting to enlarge hole and pressure pouring of concrete |
| CN1504613A (en) * | 2002-12-04 | 2004-06-16 | 何庆林 | Forming method for water-proof pile fender and screw drill therefor |
| CN2853902Y (en) * | 2005-12-30 | 2007-01-03 | 刘润郊 | Boring pump concrete placing column forming device with thermal insulation device and capable of construction at low temp |
| CN201334662Y (en) * | 2009-01-05 | 2009-10-28 | 广州市地平线岩土工程有限公司 | Integrated long-spiral drilling tool for jet-grouting branch pile |
| CN202688987U (en) * | 2012-08-11 | 2013-01-23 | 威海市水利岩土工程有限公司 | Spiral pile machine |
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| CN102767332A (en) | 2012-11-07 |
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